JPS6390419A - Ventilating and charging device for automobile - Google Patents

Abstract

PURPOSE:To prevent the overcharge of a battery by connecting a ventilating fan and an automobile loaded storage battery that are in parallel connection with switching means respectively, to a solar battery in series and carrying out the opening/closing of switches based on the charging quantity of said battery, in the captioned device using a solar battery. CONSTITUTION:A switch 21 is turned on when an ignition switch is turned off and, as a driver gets off an automobile, a seat switch 22 is turned on, enabling the output of a solar battery 2 to be fed to the motor 10a of a ventilating fan 10 and a battery 24. And, while the voltage of the battery 24 is below a set voltage, the first switch 25 is kept closed and the second switch 26 is kept opened to feed the output of the generated power of the solar battery 2 only to the battery 24. When a voltage sensor 29 detects that the voltage of the battery 24 becomes above a set value, a voltage controller 30 switches over the opening and closing of the switches 25, 26, to feed power only to the ventilating fan 10. By this structure, the overcharge of the battery can be prevented.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a ventilation and charging device for automobiles that uses solar cells, and in particular, uses electric power generated by solar cells to charge an on-vehicle battery and drive a ventilation fan. This invention relates to a ventilation and charging device for automobiles that selectively controls ventilation and charging according to the situation.

[Conventional technology]

Conventionally, this type of device was disclosed in Japanese Patent Application Laid-Open No. 54-49729.
These conventional devices are equipped with a temperature sensor that detects the temperature inside the vehicle, and when the temperature detected by this temperature sensor is higher than the set temperature when the vehicle is parked. The system uses the output of the solar cells to drive a ventilation fan, and when the temperature is lower than the set temperature, the output of the solar cells charges the vehicle battery.

[Problem that the invention seeks to solve]

In the conventional device described above, the ventilation operation and charging operation are switched based only on the detection signal of the temperature sensor, so when the temperature inside the car does not rise to the set temperature when the car is parked, such as in spring, autumn, or winter, the output of the solar cell is reduced. There was a risk that the vehicle battery would continue to be charged, causing an overcharge condition.

The present invention has been made in view of the above points, and an object of the present invention is to provide a ventilation and charging device for a vehicle that has an extremely simple configuration and can effectively prevent overcharging of a vehicle-mounted battery.

[Means for solving problems]

The present invention was devised to achieve the above object,
In the first invention, (a) a solar cell installed on the car body and converting sunlight irradiated onto the car body into electrical energy; and (b) connected in series with the solar cell and driven by the electrical energy of the solar cell. , an air blower that ventilates the inside and outside of the vehicle; (c) an on-vehicle battery connected in series to the solar cell and the air blower; (dl) a charge amount detection sensor that detects the amount of charge of the on-vehicle battery; (el) a first switch means connected in parallel to the air blower; (f1 a second switch means connected in parallel to the vehicle battery; (g) a detection signal from the charge amount detection sensor is input; control means for controlling the opening and closing of the first and second switch means in accordance with the above, When the value is smaller than the set value, the first switch means is closed, and the second switch switch is closed.

and the first switch means is opened and the second switch means is closed when the charge amount of the vehicle battery is greater than the set value. Adopt.

In the second invention, (a) a solar cell installed on the car body and converting sunlight irradiated onto the car body into electrical energy; , an air blower that ventilates the inside and outside of the vehicle; (c) an on-vehicle battery connected in series to the solar cell and the air blower; fd) a charge amount detection sensor that detects the amount of charge of the on-vehicle battery; e) a temperature sensor that detects the temperature inside the vehicle; (r1) a first switch means connected in parallel to the blower; (g) a second switch means connected in parallel to the vehicle battery; and (h) the amount of charge. a detection sensor and a control means to which a detection signal from the temperature sensor is input and which controls opening and closing of the first and second switch means in accordance with both detection signals; When the amount of charge of the vehicle-mounted battery detected by the amount detection sensor is smaller than a preset value, the first switch means is closed and the second switch means is opened, and the amount of charge of the vehicle-mounted battery is decreased. is larger than the set value, and when the temperature inside the vehicle detected by the temperature sensor is lower than the preset temperature, both the first switch means and the second switch means are closed, and the amount of charge of the vehicle battery is equal to and when the vehicle interior temperature is greater than the set value, the first switch means is opened and the second switch means is closed. .

[Action and effect of the invention]

According to the technical means of the first invention, the amount of charge of the in-vehicle battery is compared with a preset value, and the first and second
By controlling the opening and closing of the switch means, when the charge amount of the vehicle battery is smaller than a set value, the vehicle battery can be charged from the solar cell to prevent over-discharge of the vehicle battery.

On the other hand, when the amount of charge in the vehicle battery is greater than the set value, charging from the solar battery to the vehicle battery is stopped to prevent overcharging of the vehicle battery, and the ventilation blower is driven by the output of the solar battery. By ventilating the inside of the car, the temperature inside the car can be maintained at a relatively low temperature when the car is parked.

' As described above, according to the first invention, since the charging operation of the on-board battery by the solar cell can be controlled according to the charging state of the on-board battery, over-discharging and overcharging of the on-board battery can be prevented and the charging state of the on-board battery can be adjusted. It has a great effect in that it can always be maintained in good condition.

What's more, when the amount of charge in the vehicle's battery is above the set value, the output of the solar cells can be used to ventilate the interior of the vehicle.
The output of solar cells can be effectively used for ventilation operation.

Furthermore, since the first switch means and the second switch means are commonly used for controlling the charging of the vehicle battery and controlling the ventilation operation, the structure of the electric circuit is extremely simple, and the device of the present invention is low cost. Can be manufactured.

In addition to the above effects, the second invention also includes a temperature sensor that detects the temperature inside the vehicle, and when the temperature inside the vehicle is lower than the set temperature, even if the charge amount of the vehicle battery is higher than the set value. , the ventilation blower can be stopped, so the ventilation blower does not operate more than necessary, and the life of the motor of the ventilation blower can be extended.

〔Example〕

The present invention will be described below with reference to embodiments shown in the drawings. 1st
5 to 5 show the first embodiment. FIG. 1 schematically shows the arrangement of elements constituting the ventilation system according to the present invention in an automobile, and FIG. The ventilation system is shown enlarged.

Reference numeral 1 indicates a car body, and reference numeral 2 indicates a solar cell provided on the upper surface of the roof 3 of the car body 1. This solar cell 2 is in the form of a panel with a wide area and is composed of a plurality of battery cells. . The location where the solar cell 2 is placed on the vehicle body is not limited to the roof 3, but can be arbitrarily selected as long as it can receive the light rays 5 from the sun 4.

Reference numeral 6 denotes a ventilation system of an automobile air conditioner, in which a ventilation passage 9 is formed between an outside air intake lower and a vehicle interior air outlet 8. Inside the ventilation passage 9, there are ventilation fans 10 each driven by a motor.
An air conditioning heat exchanger such as an air conditioning blower 11 and an evaporator 12 is also provided. When the ventilation fan 10 operates, air is blown as shown by the arrow. To show this in detail, the second
It will look like the figure. In FIG. 2, a dedicated ventilation fan 10 is installed near the outside air intake lower, and a ventilation path 9
An inside air intake port 13 for taking in air inside the vehicle is also formed in the inside. Therefore, on the upstream side of the air conditioning blower 11, a switching damper 14 is provided to select between outside air and inside air. 1
5 is a motor for rotating the air conditioning blower 11. Furthermore, a heating heater core 17 equipped with an air mix damper 16 for temperature control is disposed between the evaporator 12 that cools the blown air using the latent heat of vaporization of the refrigerant in the refrigeration cycle and the air outlet 8 into the vehicle interior. . This heater core 1
7 heats the blown air using the automobile engine cooling water as a heat source.

FIG. 3 is a circuit diagram showing the electrical configuration of the ventilation charging device according to the present invention, and FIG. 4 shows a specific circuit of the electric controller.

3, the negative terminal of the solar cell 2 described above is grounded, and between the positive terminal and the ground, there is a switch 21 that works with the ignition switch of an automobile engine, and a A seat switch 22 that detects getting off the vehicle, and the ventilation fan 1
0, a diode 23 that prevents conduction in the reverse direction, and an on-vehicle battery 24 are connected to a series circuit. In this circuit, a normally closed switch (first switch means) 25 is further connected in parallel to the ventilation fan 10, which is in a normally closed state and can short-circuit both terminals of the motor 10a of the ventilation fan IO when the ventilation fan 10 is closed. Also, a normally open switch (second switch means) 26 is connected between the anode terminal of the diode 23 and the ground, which is normally open and can short-circuit the two when closed. When the first switch 25 closes, the ventilation fan 1
No voltage is applied to the motor 10a of the ventilation fan 1.
0 does not work. Further, when the second switch 26 is closed, the voltage of the solar cell 2 is not applied to the battery 24, and the battery 24 is not charged by the solar cell 2. In addition, a voltage sensor 29 is connected in parallel to the battery 24. This voltage sensor 29 is for detecting the voltage state of the battery 24, outputs a signal corresponding to the voltage value between the terminals of the battery 24, and serves as a battery charge amount detection sensor. 30 is an electric controller,
A detection signal from the voltage sensor 29 is input, and a control signal obtained as a result of signal processing is supplied to the switch 25.26. The opening and closing operations of the switches 25 and 26 are controlled by an electric controller 30 based on the output signal of the voltage sensor 29 as shown in the table shown in FIG. 5, which will be described later. Relay contacts, semiconductor switches, reed switches, etc. are used for the switches 25 and 26.

As shown in FIG. 4, the electric controller 30 has an evaporative comparator 31, and a set voltage v2 set by resistors R, R2 is input to the inverting input terminal of the comparator 31, and its non-inverting input The output signal V of the voltage sensor 29 is input to the terminal. This comparator 31
outputs an H level output when the voltage of the vehicle battery 24 (that is, the output voltage of the voltage sensor 29) is equal to or higher than the set voltage 72.

Next, the operation of the first embodiment in the above configuration will be explained. The device of the first embodiment is ready to operate when the passenger gets off the vehicle. That is, when the driver turns off the ignition switch of a car engine (not shown), the switch 21 turns on, and when the driver gets out of the car, the switch 21, which had been in the off state until then, detects the presence of the driver. The seat switch 22 is turned on. By turning on this switch 21 and seat switch 22,
A state is set in which the output of the solar cell 2 can be supplied to the motor 10a of the ventilation fan 10 and the vehicle battery 24.

In the above circuit state, when the voltage (2) of the battery 24 is smaller than the set voltage (2), the output of the comparator 31 is at the L level, so the normally closed first switch 25 remains closed, and the normally open first switch 25 remains closed. The second switch 26 remains open.

As a result, the power generated by the solar cell 20 is not applied to the motor 10a of the ventilation fan 10, but is applied only to the vehicle battery 24. Therefore, the above-mentioned V<V.

When such a relationship exists, over-discharge of the vehicle battery 24 can be prevented by preferentially charging the vehicle battery 24 by the solar cell 2 during parking.

Next, the voltage ■ of the vehicle battery 24 is the set voltage V.

When it becomes larger, the output of the comparator 31 becomes H level, and the normally-closed first switch 25 opens (and at the same time, the normally-opened second switch 26 closes.

Thereby, the power generation output of the solar cell 2 is applied only to the motor 10a of the ventilation fan 10, and the ventilation fan 10 is operated to ventilate the interior of the vehicle.

As a result, it is possible to suppress the temperature inside the vehicle from rising under the scorching sun in summer, and also to eliminate odors generated in the vehicle interior. At the same time, overcharging of the vehicle battery 24 can be prevented by stopping charging of the vehicle battery 24 by the solar cell 2 when the above-mentioned relationship V>VZ holds.

FIG. 5 is a table showing the above-mentioned two operation patterns (1) and (2).

6 and 7 show a second embodiment, in which a second comparator 32 is added to the electric controller 30 in addition to the comparator 31, and these comparators 31, 3
The opening and closing of the first switch 25 and the second switch 26 are controlled by the outputs of the switches 2 and 2, respectively. Second
Resistors R3 and R4 are connected to the inverting input terminal of the comparator 32.
The set voltage VI is applied.

Here, the set voltage ■1 is set to a value (V, <VZ) smaller than the set voltage v2 of the first comparator 31 by a predetermined value.

According to the second embodiment, the voltage V of the vehicle battery 24 is
When the set voltage is smaller than 1, the outputs of the first and second comparators 31 and 32 both become L level, the normally closed first switch 25 remains closed, and the normally open second switch 26 remains open. Since this state remains, the operation of the ventilation fan 10 is stopped, and the on-vehicle batch IJ 24 is charged by the output of the solar cell 2. This state is the seventh
The pattern is shown in pattern ■ in the figure.

Next, the voltage V of the vehicle battery 24 is the set voltage V.

and VZ, the output of the comparator 32 is at the 1] level, the first switch 25 is opened, and the output of the comparator 31 is at the L level, so the second switch 26 is opened. It remains as it is. This results in
Since the motor 10a of the ventilation fan 10 and the vehicle battery 24 are connected in series to the solar cell 2, the ventilation fan 1
0 ventilation operation and charging of the vehicle battery 24 are performed simultaneously. However, in this case, the output voltage of the solar cell 2 is divided between the ventilation fan motor 10a and the vehicle battery 24, so the ventilation fan 1
The rotation speed at 0 is small, and the battery charging current is also small.

Next, when the voltage V of the vehicle battery 24 becomes larger than the set voltage 2, the outputs of the two comparators 31 and 32 both become H level, the first switch 25 opens, the second switch 26 closes, and the seventh As shown in pattern (3) in the figure, the ventilation fan 10 operates in a state of rotation and expansion, and at the same time, charging of the vehicle battery 24 is stopped to prevent overcharging.

8 to 11 show a third embodiment, in which a temperature sensor 18 made of a temperature sensing element such as a thermistor is installed in the passenger compartment 19 of an automobile, and a detection signal of this temperature sensor 18 is sent to an electric controller 30. Temperature sensor 18
The opening and closing of the first and second switches 2526 are controlled based on the detection signals of the voltage sensor 25 and the voltage sensor 29.

FIG. 10 shows an electric controller 30 in the third embodiment.
In this example, one switch per year is 25.
is also a normally open type, and a voltage corresponding to the detected temperature T of the temperature sensor 18 is input to the non-inverting input terminal of the comparator 33.
On the other hand, the inverting input terminal of the converter 33 has resistors R5 and R
, a set voltage corresponding to the set temperature T1 is inputted, and the outputs of both comparators 31 and 33 are inputted to the inverter 3.
4.35 and the OR gate 36 to the normally open first switch 25.

In the above configuration, the operation of the third embodiment will be explained as follows.
Operation pattern A in FIG. 11 is when the battery voltage ■ is smaller than the set voltage ■2 (V<V1), and at this time, the output of the comparator 31 is at L level, so the normally open second switch 26 is The switch is opened, and the normally open first switch 25 is
Since the level signal is applied, the normally open first switch 25 is closed regardless of the temperature detected by the temperature sensor 18.

Therefore, the ventilation fan IO is stopped, and only the on-vehicle battery 24 is charged.

When the battery voltage V is higher than the set voltage vt (V>V1), the output of the comparator 31 becomes H level, the second switch 26 is always closed, and the in-vehicle battery 2
Stop charging to 4. At this time, the operation of the ventilation fan 10 is controlled according to the temperature T detected by the temperature sensor 18. That is, when the detected temperature T of the temperature sensor 18 is smaller than the set temperature T (T<T1), the comparator 33
The output becomes L level, an H level signal is applied to the normally open first switch 25 via the inverter 35 and the OR gate 36, the first switch 25 is also closed, and the operation of the ventilation fan 10 is also stopped. This prevents the ventilation fan 1° from operating unnecessarily when the temperature inside the vehicle is low, thereby extending the life of the ventilation fan motor 10a. The above operating state is shown in pattern B in FIG.

Next, as shown in pattern C in FIG. 11, when V>V, and the vehicle interior temperature T becomes higher than the set temperature T1, the output of the comparator 33 becomes H level, and the normally open first switch 25 opens. Therefore, the ventilation fan 10 operates, and '
Ventilate the vehicle interior.

Next, FIG. 12 and FIG. 13 show a fourth embodiment, which is the same as the overall structure of the third embodiment (the structure of FIG. 8 and FIG. 9).
are the same, and the configuration of the electric controller 30 is modified. That is, in the electric controller 30 of this example, three comparators 31, 32, 33 are combined with an inverter 34, 35, and an OR gate 36 to control opening and closing of the normally open first switch 25 and the normally open second switch 26. 4 Below To explain the operation of the fourth embodiment, in pattern I of FIG. 13, since the battery voltage ■ is smaller than ■1,
The outputs of the comparators 31 and 32 are both at the L level, so the normally open second switch 26 is open, and a signal of 1 level is sent to the normally open first switch 25 via the inverter 34 and the OR gate 36. As a result, the first switch 25 is closed. Therefore, the detected temperature T of the temperature sensor 18
The on-vehicle batch IJ is controlled by the output of the solar cell 2 regardless of
Only 24 charges are performed, and the charging current is large.

Next, in pattern H in FIG. 13, the battery voltage V is v
, <v<y, and the vehicle interior temperature T is lower than TI. At this time, the output of the comparator 31 is at L level, and the second switch 26 is opened. Also,
The output of the comparator 32 becomes H level, and the output of the inverter 34 becomes L level. However, since the output of the comparator 33 is L level, the output of the inverter 35 becomes H level, and the normally open 1 switch 25 is closed. As a result, the on-vehicle battery 24 is charged with the output of the solar cell 2 similarly to the pattern 1 above.

Next, in pattern ■ of FIG. 13, the battery voltage V is V,
<V<V2 and the vehicle interior temperature T is higher than T, in which case the output of the comparator 31 is L.
level, and the outputs of comparators 32 and 33 are H
level, the normally open type second switch 26 is opened and at the same time the normally open type first switch 25 is also opened. As a result, the motor 10a of the ventilation fan 10 and the vehicle battery 2
4 are connected in series, and the ventilation fan 10 performs ventilation operation at several tens of rotations, and charges the vehicle battery 24 at a small charging current.

Next, in pattern 3 of FIG. 13, there is a relationship of V>V and T<T, so that the outputs of comparators 31 and 32 are at H level, and the output of comparator 33 is at L level. . Therefore, the normally open second switch 26
is closed, stopping charging of the on-vehicle battery 24, and the normally open first switch 25 is also closed, causing the ventilation fan 10 to stop operating.

Next, in pattern ■ in FIG. 13, V > V z and T > TI, so the outputs of all comparators 31, 32, and 33 become H level,
The normally open second switch 26 is closed, and the vehicle battery 24 is closed.
At the same time, the normally open first switch 25
is opened, and the ventilation fan 10 rotates and expands to ventilate the vehicle interior.

Next, FIGS. 14 and 15 show a fifth embodiment, which is a further modification of the electric controller 30 of the fourth embodiment. A comparator 37 is added in which a second set temperature T, which is higher by the value of A normally closed first switch 25 and a normally open second switch 2
Controls the opening and closing of 6.

The operation of the fifth embodiment will be explained below according to patterns I to ■ in FIG. 1 switch 25 is closed.

At the same time, since the output of the comparator 31 is also at the L level, the outputs of the AND gate 39 and the OR gate 40 are at the L level, and the normally open second switch 26 is also opened.

Therefore, regardless of the temperature T detected by the temperature sensor 18, only the on-vehicle battery 24 is charged, and the charging current becomes large.

Next, in pattern ■, ■, <V<Vz, and T <
Since there is a T I relationship, only the output of the comparator 32 becomes H level, and the output of the other comparators 31, 33, 3
All outputs of 7 are at L level. As a result, the normally closed first switch 25 is closed and the normally open second switch 26 is opened, so that the same operation as in pattern (2) is performed.

Next, in pattern (2), V, <V<V, and T.

Since the relationship is <T<T, comparators 32 and 33
output becomes H level, and comparators 31 and 37
The output becomes L level. As a result, AND gate 3
8 becomes H level, and the normally closed first switch 25 is opened. On the other hand, AND gate 39 and OR gate 40
Since the output of is at L level, the normally open second switch 26
remains open. Therefore, the ventilation fan 10 operates to ventilate the vehicle interior with several tens of revolutions, and the vehicle battery 24 is charged with a small charging current.

Next, in pattern ■, V, <V<V! And 'r<
Because of the relationship between Tg, the comparator is 32°33.37
The output of the comparator 31 becomes H level, and only the output of the comparator 31 becomes L level. As a result, the output of the AND gate 38 becomes H level, and the normally closed first switch 25 is opened. On the other hand, since the output of the AND gate 39 also becomes H level, the normally open second switch 26 is closed, so charging of the vehicle battery 24 is stopped, and the ventilation fan 10 is kept in the state of rotation and expansion inside the vehicle interior. Provide ventilation.

Next, in pattern V, since V>V and T<T, the outputs of comparators 31 and 32 go to H level, and the outputs of comparators 33 and 37 go to L level. Therefore, the normally closed first switch 25 is closed, the normally open second switch 26 is also closed, and the ventilation fan 10 is closed.
stops operating, and charging to the vehicle battery 24 also stops.

Next, in pattern (2), since the relationship is V>V and T>T1, the outputs of the comparators 31, 32, 33 become H level, the normally closed first switch 25 opens, and the normally closed first switch 25 opens. The second formula swifter 26 is a comparator 31
Closed by H level output. Therefore, regardless of the output of the comparator 37, charging of the vehicle battery 24 is stopped, and the ventilation fan 10 ventilates the interior of the vehicle at a high rotation speed.

FIG. 16 shows a sixth embodiment, and is similar to FIG. 1, and the same elements in the figure are given the same reference numerals. In this sixth embodiment, a dedicated ventilation fan is not provided, and the air conditioning blower 11 also serves as a ventilation fan. Therefore, no special ventilation fan is required, and it is possible to improve wearability and reduce costs.

17 and 18 show a seventh embodiment. In this embodiment, the charge N detection sensor for the battery 24 is a sensor that detects the specific gravity of the electrolyte in the battery (lead-acid battery) 24 instead of the voltage sensor 29 described above. A specific gravity sensor 290 is used for detection, and a detection signal from this sensor 290 is input to the electric controller 30. This specific gravity sensor 290 is
As shown in FIG. 18, the amount of charge of the battery 24 is detected by utilizing the fact that the terminal voltage of the battery 24 and the specific gravity of the electrolyte tend to decrease with the passage of discharge time. Since this is known from Japanese Patent Application Laid-Open No. 54-332 (Japanese Patent Publication No. 59-39328), which was proposed by the inventors earlier, a detailed explanation of the structure will be omitted. Although the above-mentioned publication shows a switch type specific gravity sensor, it is obvious to those skilled in the art that a specific gravity sensor that changes the electrical resistance value continuously or stepwise can be constructed.

Furthermore, a PH sensor may be used as the charge amount detection sensor, taking advantage of the fact that the OPH value of the battery fluid corresponds to the charge amount.

Next, the operation of the device of the present invention will be further explained using FIGS. 19 and 20. FIG. 19 shows the respective ■-■ (voltage-current) characteristics of the solar cell 2 and the ventilation fan motor 10a, Figure 20 shows the vehicle interior temperature (T) and the rotation speed of the ventilation fan 10 (N) when the intensity of the sun's rays is constant.
Indicates the relationship between

The pattern I [[(V, <V<V.

and when T+<T<Tz), the ventilation fan motor 10a and the on-vehicle batch 1J24 are connected in series to the solar cell 2, so the ventilation fan 10 operates at the small rotation speed N1 shown in FIG. At the same time, the battery 24 is also charged. In this case, while the solar cell 2 has the v-r characteristic shown by the line A in FIG. 19, the battery 2
The motor 10a of the ventilation fan 10 connected in series with the ventilation fan 4 has the V-1 characteristic shown in B. Therefore, characteristics A and B
The operating point of the ventilation fan 10 is determined at the point determined as the intersection with . Note that as the charging of the battery 24 progresses, the voltage applied to the motor 10a of the ventilation fan 10 becomes smaller.
The operating point will also shift to aI + aZ + a3. Further, when the sunlight becomes stronger and the output voltage of the solar cell 2 increases, the voltage applied to the motor 10a of the ventilation fan 10 increases, and the rotation speed N increases.

On the other hand, in patterns ■ and ■ in FIG. 15, the second switch 26 is closed and the vehicle battery 24 is short-circuited;
In FIG. 9, C indicates the V-I characteristic of the ventilation fan 10 when the battery 24 is short-circuited, and the operating point a4 of the ventilation fan 10 is the intersection of this characteristic C and the VI characteristic A of the solar cell 2. determined. This operating point a4 means the maximum output point, and the rotation speed of the ventilation fan 10 becomes a high rotation speed N2 shown in FIG.

Note that in the illustrated embodiment described above, the switch 25.2
Although the operation control of No. 6 was performed by an electric controller 30 having a hardware configuration consisting of a combination of individual circuit elements, it can also be realized by software using a microcomputer. Further, the switches 25 and 26 are not limited to normally closed switches or normally open switches, but any switch means can be used as long as the above-mentioned opening/closing operations can be performed by control signals from a control means such as an electric controller. can do.

As described above, the present invention can be widely implemented in various embodiments.

[Brief explanation of the drawing]

Fig. 1 shows a first embodiment of the present invention, and is a schematic diagram showing the arrangement of the components of the ventilation system, Fig. 2 is an enlarged view of the ventilation system shown in Fig. 1, and Fig. 3 is a schematic diagram showing the arrangement of components of the ventilation system. Fig. 1 is an overall electrical circuit diagram including the ventilator part shown in the diagram; Fig. 4 is a specific circuit diagram of the electric controller shown in Fig. 3; Fig. 5 is an embodiment diagram showing the control pattern of the first embodiment; 6 is a specific circuit diagram of the electric controller of the second embodiment, FIG. 7 is a mode diagram showing the control pattern of the second embodiment, and FIG. 8 is a schematic diagram similar to FIG. 1 regarding the third embodiment. FIG. 9 is an electric circuit diagram showing the third embodiment, FIG. 10 is a specific circuit diagram of the electric controller shown in FIG. 9, FIG. 11 is a mode diagram showing the control pattern of the third embodiment, and FIG. 12 13 is an M-shaped diagram showing the control pattern of the fourth embodiment. FIG. 14 is an electrical circuit diagram of the electrical controller showing the fifth embodiment. The figure is a mode diagram showing the control pattern of the fifth embodiment, Fig. 16 is a schematic layout diagram of the ventilation system part showing the sixth embodiment, Fig. 17 is an electric circuit diagram showing the seventh embodiment, and Fig. 18 is Figure 19 shows the discharge characteristics of a lead-acid battery used as a battery.
1 characteristic diagram, FIG. 20 is an explanatory diagram showing the relationship between the vehicle interior temperature and the rotation speed of the ventilation fan. 1... Car body, 2... Solar battery, 5... Sunlight 9.10... Ventilation fan (ventilation blower),
11... Air conditioning blower, 12... Evaporator, 1
8... Temperature sensor, 23... Diode, 24...
- Vehicle battery, 25... first switch, 26...
- Second switch, 29... Voltage sensor (charge amount detection sensor), 30... Electric controller (control means),
290... Specific gravity sensor (charge amount detection sensor).

Claims (12)

[Claims] (1) (a) A solar cell that is installed on the car body and converts sunlight irradiating the car body into electrical energy; (b) A solar cell that is connected in series with this solar cell and is driven by the electrical energy of this solar cell. (c) an on-vehicle battery connected in series to the solar cell and the air blower; (d) a charge amount detection sensor that detects the amount of charge of the on-vehicle battery; (e) ) a first switch means connected in parallel to the blower; (f) a second switch means connected in parallel to the vehicle battery; (g) a detection signal from the charge amount detection sensor is input; (h) the control means is configured such that the amount of charge of the in-vehicle battery detected by the amount of charge detection sensor is set in advance; When the amount of charge of the vehicle battery is greater than the set value, the first switch means is closed and the second switch means is opened; when the amount of charge of the vehicle battery is greater than the set value, the first switch means is opened. and a vehicle ventilation charging device configured to close the second switch means. (2) The control means has a first set value (V_1) and a second set value (V_2) larger than this by a predetermined value as the set values, and the charge amount of the on-board battery is set to the first set value (V_1). is smaller than the set value (V_1), the first switch means is closed and the second switch means is opened, and the amount of charge of the vehicle battery is equal to or less than the first set value (V_1).
) and the second set value (V_2), both the first switch means and the second switch means are opened, and the amount of charge of the vehicle battery is within the range between the second set value (V_2).
2. The ventilation and charging device for a motor vehicle according to claim 1, wherein the first switch means is opened and the second switch means is closed when the voltage is larger than . (3) The ventilation and charging device for an automobile according to claim 1 or 2, wherein the charge amount detection sensor is a voltage sensor that detects a voltage between terminals of a vehicle-mounted battery. (4) Claim 1, wherein the charge amount detection sensor is a specific gravity sensor that detects the specific gravity of the electrolyte of the in-vehicle battery.
The ventilation charging device for an automobile according to item 1 or 2. (5) According to any one of claims 1 to 4, the blower device is constituted by a fan dedicated to ventilation that is installed in the ventilation system of an automobile air conditioner independently of an air conditioning blower. The automotive ventilation charging device described. (6) The ventilation and charging device for an automobile according to any one of claims 1 to 4, wherein the air conditioning blower itself provided in the ventilation system of an automobile air conditioner also serves as the air blower. . (7) (a) A solar cell installed on the car body that converts the sunlight irradiating the car body into electrical energy; (b) A solar cell connected in series with this solar cell and driven by the electrical energy of this solar cell. (c) an on-vehicle battery connected in series to the solar cell and the air blower; (d) a charge amount detection sensor that detects the amount of charge of the on-vehicle battery; (e) (f) a first switch means connected in parallel to the blower; (g) a second switch means connected in parallel to the on-board battery; (h) detecting the amount of charge. a sensor and a control means to which a detection signal from the temperature sensor is input and which controls opening and closing of the first and second switch means in accordance with both detection signals; When the amount of charge of the vehicle-mounted battery detected by the detection sensor is smaller than a preset value, the first switch means is closed and the second switch means is opened, and the amount of charge of the vehicle-mounted battery is When the in-vehicle temperature detected by the temperature sensor is higher than the set value and lower than the preset set temperature, both the first switch means and the second switch means are closed, and the charge amount of the onboard battery is equal to the set temperature. and when the vehicle interior temperature is higher than the set value, the first switch means is opened and the second switch means is closed. (8) The control means has a first set value (V_1) and a second set value (V_2) that is larger by a predetermined value than the first set value (V_1) as the set value for the charge amount of the in-vehicle battery, and The set temperature for the vehicle interior temperature includes a first set temperature (T_1) and a second set temperature (T_2) higher by a predetermined temperature than the first set temperature (T_1), and the amount of charge of the in-vehicle battery is set to the first set value ( When it is smaller than V_1),
The first switch means is closed and the second switch means is opened, and the amount of charge of the vehicle battery reaches the first set value (V_1
) and the second set value (V_2), the first switch is activated when the vehicle interior temperature is lower than the first set temperature (T_1) according to the detection signal of the temperature sensor. The means is closed and the second switch means is opened, so that the temperature inside the vehicle reaches the first set temperature (T_
1) and the second set temperature (T_2), both the first switch means and the second switch means are opened, and the vehicle interior temperature reaches the second set temperature (T_2).
2) When the temperature is higher than the second set value (V_2), the first switch means is opened and the second switch means is closed, and when the charge amount of the vehicle battery is higher than the second set value (V_2), the temperature sensor detects the temperature. In response to the signal, both the first switch means and the second switch means are closed when the temperature inside the vehicle is lower than the first set temperature (T_1), and the temperature inside the vehicle is higher than the first set temperature (T_1). 8. The ventilation and charging device for a motor vehicle according to claim 7, wherein said first switch means is sometimes opened and said second switch means is closed. (9) The ventilation and charging device for an automobile according to claim 7 or 8, wherein the charge amount detection sensor is a voltage sensor that detects a voltage between terminals of a vehicle-mounted battery. (10) The vehicle ventilation charging device according to claim 7 or 8, wherein the charge amount detection sensor is a specific gravity sensor that detects the specific gravity of the electrolyte of the on-board battery. (11) According to any one of claims 7 to 10, the blower device is constituted by a fan dedicated to ventilation that is installed in the ventilation system of an automobile air conditioner independently of an air conditioning blower. The automotive ventilation charging device described. (12) The ventilation and charging device for an automobile according to any one of claims 7 to 10, wherein the air conditioning blower itself that is provided in the ventilation system of an air conditioner for an automobile also serves as the air blower. .