CN105270184B - Electric automobile and high-low voltage interlocking detection circuit thereof - Google Patents
Electric automobile and high-low voltage interlocking detection circuit thereof Download PDFInfo
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- CN105270184B CN105270184B CN201510703781.5A CN201510703781A CN105270184B CN 105270184 B CN105270184 B CN 105270184B CN 201510703781 A CN201510703781 A CN 201510703781A CN 105270184 B CN105270184 B CN 105270184B
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Abstract
The invention discloses a high-low voltage interlocking detection circuit of an electric automobile and the electric automobile with the same, wherein the detection circuit comprises: n harness terminals, each harness terminal of the N harness terminals including a first low-voltage interlock wire and a second low-voltage interlock wire; the high-voltage interlocking unit comprises N resistors, a first output end and a second output end which are connected in series, each resistor in the N resistors is connected in parallel between a first low-voltage interlocking wire and a second low-voltage interlocking wire in each wiring harness terminal in a one-to-one correspondence mode, and the resistance values of the resistors are different; and the detection unit is respectively connected with the first output end and the second output end, generates corresponding detection signals according to different resistance values output by the high-voltage interlocking unit, and identifies the connection state between each high-voltage connector and the corresponding wire harness terminal according to the corresponding detection signals. The detection circuit can quickly and accurately judge the specific positions and the number of the high-voltage connectors which are broken.
Description
Technical field
The present invention relates to electric vehicle engineering field, the high-low pressure of more particularly to a kind of electric automobile interlocking detection circuit with
A kind of and electric automobile with high-low pressure interlocking detection circuit.
Background technology
Electric automobile is different from orthodox car, and, using high voltage power battery as power source, matching high voltage power system (is driven for it
Dynamic electric system), distribution system, on-board charging system, the part such as air-conditioning and warm air system, realize driving, being high for electric automobile
Temperature adjustment in the charging of pressure power battery and low pressure lead-acid accumulator and compartment etc., therefore, in electric automobile or mixing
In power vehicle, electrical system is generally divided into high-pressure system and low-pressure system.Wherein, low-pressure system can be 12V power-supply systems,
It can be powered by 12V lead-acid accumulators, because its voltage is less than 48V, therefore in the range of safe voltage；High-pressure system is used to drive
Dynamic vehicle operation, usual voltage range is 250-500V, has the characteristics of voltage is high, electric current is big.
After electricity on electric automobile, by the high-tension electricity with more than 300V in high tension loop, once high voltage component is led
Line exposes, and there will be potential safety hazard, and in order to eliminate safe hidden trouble, person skilled proposes a variety of high-low pressure interlocking detection electricity
Road, to judge whether high tension loop occurs open circuit.In correlation technique, although being capable of detecting when whether high tension loop breaks
Road, but lack the positioning function to trouble point, therefore after failure generation, malfunction elimination is low with the efficiency comparison repaired.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of quickly and to be accurately judged to occur the particular location and quantity of the high-tension connector of open circuit
Electric automobile high-low pressure interlocking detection circuit.
It is another object of the present invention to propose a kind of electric automobile.
To reach above-mentioned purpose, a kind of high-low pressure interlocking detection electricity for electric automobile that one aspect of the present invention embodiment proposes
Road, including：N number of Wiring harness terminal, each Wiring harness terminal in N number of Wiring harness terminal include the mutual locking wire of the first low pressure and second low
Mutual locking wire is pressed, wherein, N is the integer more than 1；High-voltage interlocking unit, the high-voltage interlocking unit include the N number of electricity being connected in series
Resistance, the first output end and the second output end, each resistance in N number of resistance, which corresponds, is connected in parallel on each wire harness end
Between the mutual locking wire of the first low pressure and the mutual locking wire of the second low pressure in son, and the resistance of each resistance is different, the high pressure
Interlocking unit passes through described according to the connection between N number of high-tension connector in N number of Wiring harness terminal and high-tension distribution box
First output end and second output end export different resistances；Detection unit, the detection unit are defeated with described first respectively
Go out end with second output end to be connected, the different resistances that the detection unit exports according to the high-voltage interlocking unit generate phase
Detection signal is answered, and the connection between each high-tension connector and corresponding Wiring harness terminal is identified according to the corresponding detection signals
State.
The high-low pressure interlocking detection circuit of electric automobile according to embodiments of the present invention, due to the in each Wiring harness terminal
The resistance of resistance in parallel is different between the mutual locking wire of one low pressure and the mutual locking wire of the second low pressure, when any one in high-tension connector
Or multiple high-tension connectors are when occurring breaking, the first output end of high-voltage interlocking unit with the resistance of the second output end output not
Together, therefore detection unit can generate corresponding detection signals according to the different resistances of high-voltage interlocking unit output, and according to corresponding
Detection signal identifies the connection status between each high-tension connector and corresponding Wiring harness terminal, so as to sentence quickly and accurately
Break and the particular location and quantity of the breaking high-tension connector of generation, improve the malfunction elimination efficiency of maintenance personal.
According to one embodiment of present invention, each Wiring harness terminal also includes the first HV Terminal and second high-pressure side
Son, first HV Terminal and the sub HV Terminal with corresponding high-tension connector of second high-pressure side match.
According to one embodiment of present invention, each high-tension connector also includes the mutual locking wire of depression belt short circuit, described
The mutual locking wire of depression belt short circuit matches with the mutual locking wire of the first low pressure in corresponding Wiring harness terminal and the mutual locking wire of the second low pressure, with
It is described each when connected state is between high-tension connector and corresponding Wiring harness terminal so that first in corresponding Wiring harness terminal
Resistance short circuit in parallel between the mutual locking wire of low pressure and the mutual locking wire of the second low pressure.
According to one embodiment of present invention, it is in preset ratio relation between resistance corresponding to N number of resistance.
Specifically, the preset ratio relation is R1：R2：R3：……：Rn=1：2：4：……：2n。
According to one embodiment of present invention, described in one end of first resistor is used as in the N number of resistance being connected in series
First output end, the other end of N resistance s as second output end in the N number of resistance being connected in series.
According to one embodiment of present invention, the detection unit specifically includes：The pull-up resistor being connected in series and first
Electric capacity, the pull-up resistor being connected in series and the first capacitance connection default between power supply and ground, it is described be connected in series it is upper
There is first node between pull-up resistor and the first electric capacity, there is section point, the first segment between first electric capacity and ground
Point is connected with first output end, and the section point is connected with second output end；Divider resistance, the divider resistance
One end be connected with the first node；Second electric capacity, one end of second electric capacity are connected with the section point, and described
The other end of two electric capacity is connected with the other end of the divider resistance；Controller, the controller have AD test sides, the AD
Test side is connected with the other end of the divider resistance and the other end of second electric capacity respectively.
To reach above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of electric automobile, and it includes above-mentioned electricity
The high-low pressure interlocking detection circuit of electrical automobile.
The electric automobile of the embodiment of the present invention, can be quick by the high-low pressure interlocking detection circuit of above-mentioned electric automobile
And it is accurately judged to occur the particular location and quantity of the high-tension connector of open circuit, failure caused by artificial investigation can be prevented
Omit, at the same can greatly shorten malfunction elimination and maintenance time, particularly with high-tension distribution box be arranged in car bottom or
Other when being not easy the position detected, effect is more obvious.
Brief description of the drawings
Fig. 1 is the structural representation of the high-low pressure interlocking detection circuit of electric automobile according to an embodiment of the invention.
Fig. 2 is the structural representation of the high-low pressure interlocking detection circuit of electric automobile in accordance with another embodiment of the present invention
Figure.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawings circuit is detected come the high-low pressure interlocking for the electric automobile for describing to propose according to embodiments of the present invention
And the electric automobile with high-low pressure interlocking detection circuit.
Fig. 1 is the structural representation of the high-low pressure interlocking detection circuit of electric automobile according to an embodiment of the invention.
As shown in figure 1, the high-low pressure interlocking detection circuit of the electric automobile includes：N number of Wiring harness terminal, high-voltage interlocking unit 10 and detection
Unit 20.
Wherein, each Wiring harness terminal in N number of Wiring harness terminal includes the mutual locking wire S1 of the first low pressure and the mutual locking wire of the second low pressure
S2, wherein, N is integer more than 1, N number of resistance that high-voltage interlocking unit 10 includes being connected in series, the first output end OUT1 and the
Two output end OUT2, each resistance in N number of resistance correspond the mutual locking wire of the first low pressure being connected in parallel in each Wiring harness terminal
Between S1 and the mutual locking wire S2 of the second low pressure, and the resistance of each resistance is different, and high-voltage interlocking unit 10 is according to N number of Wiring harness terminal
Connection between N number of high-tension connector in high-tension distribution box is defeated by the first output end OUT1 and the second output end OUT2
Go out different resistances, detection unit 20 is connected with the first output end OUT1 and the second output end OUT2 respectively, the basis of detection unit 20
The different resistances generation corresponding detection signals that high-voltage interlocking unit 10 exports, and identify that each high pressure connects according to corresponding detection signals
Connect the connection status between device and corresponding Wiring harness terminal.
Specifically, on electric automobile, the high pressure of motor system, air-conditioning and warm air system, on-board charging system etc.
Electricity obtains by electrokinetic cell through high-tension distribution box.Generally, the input of high-tension distribution box for electrokinetic cell high-voltage positive electrode and
High voltage negative, according to the configuration of electric automobile, the output end of high-tension distribution box is high pressure both positive and negative polarity, the air-conditioning of motor system
And the high pressure both positive and negative polarity of warm air system, the high pressure both positive and negative polarity of on-board charging system, fast charge high pressure both positive and negative polarity and high pressure DC/DC electricity
The both positive and negative polarity on road etc..Therefore, the input of high-tension distribution box has a high-tension connector, and the output end of high-tension distribution box has
Multiple high-tension connectors.
It is intact in order to which whether the high-tension connector of accurate judgement high-tension distribution box output end connects, will be all in correlation technique
High-tension connector is together in series, and will cause to connect when any one high-tension connector in all high-tension connectors occurs breaking
Loop open circuit, and realize high-tension connector and corresponding line from the shorting stub of identical low pressure inside each high-tension connector
The detection of connection status between Shu Duanzi, therefore, it is intact to can interpolate that out whether high-tension connector connects by the circuit.But
It is that the circuit can only detect to a kind of high-tension connector " open circuit " failure, and when some or certain several high pressures connect
When device is simultaneously breaking, the circuit can not judge the particular location and quantity of the high-tension connector of open circuit occurs, therefore, the present invention
Embodiment proposes a kind of high-low pressure interlocking detection circuit of electric automobile.
As shown in figure 1, when high-tension distribution box output end has N number of high-tension connector, high-low pressure interlocking detection circuit can be with
Including N number of Wiring harness terminal, each Wiring harness terminal is correspondingly parallel with a resistance, respectively first resistor R1, second resistance R2,
Three resistance R3 ..., N resistance RN, and N number of resistant series connect, and resistance differs.When in N number of high-tension connector
When any one or more high-tension connectors occur breaking, the first output end OUT1 and second of high-voltage interlocking unit 10 is embodied in
Resistance on output end OUT2 is different, therefore, by defeated to the first output end OUT1 of high-voltage interlocking unit 10 and second
Go out the judgement for the resistance held on OUT2, you can realize the accurate detection to high-tension connector particular location and quantity, effectively prevent
Because high-tension connector be not reliably connected caused by potential safety hazard, improve the reliability of load parts, and substantially increase
The efficiency of malfunction elimination.
According to one embodiment of present invention, as shown in figure 1, each Wiring harness terminal also includes the first HV Terminal H1 and the
Two HV Terminal H2, the first HV Terminal H1 and the sub- H2 of second high-pressure side and the HV Terminal phase in corresponding high-tension connector
Match somebody with somebody.
According to one embodiment of present invention, as shown in figure 1, each high-tension connector also includes the mutual locking wire of depression belt short circuit
S3, the mutual locking wire S3 of depression belt short circuit locking wire S1 mutual with the first low pressure in corresponding Wiring harness terminal and the mutual locking wire S2 phases of the second low pressure
Matching, during being in connected state between each high-tension connector and corresponding Wiring harness terminal so that corresponding Wiring harness terminal
In resistance short circuit in parallel between the mutual locking wire S1 of the first low pressure and the mutual locking wire S2 of the second low pressure.
Specifically, as shown in figure 1, each high-tension connector of high-tension distribution box output end has two height of positive pole and negative pole
Pressure side, while also there is one group of (two) low pressure to interlock terminal in high-tension connector, and two low pressure interlock terminal in high pressure
Short circuit is carried out with shorting stub inside connector, to form the mutual locking wire S3 of depression belt short circuit.Include two in each Wiring harness terminal
HV Terminal (the first HV Terminal H1 and the sub- H2 of second high-pressure side) and the two mutual locking wire of low pressure (mutual locking wire S1 of the first low pressure and
The mutual locking wire S2 of two low pressure), also, two HV Terminals of the positive pole of high-tension connector and negative pole and the first high pressure in Wiring harness terminal
Terminal H1 and the sub- H2 of second high-pressure side match, while the mutual locking wire S3 of depression belt short circuit is low with first in corresponding Wiring harness terminal
Mutual locking wire S1 and the mutual locking wire S2 of the second low pressure is pressed to match.
When the high-tension connector of high-tension distribution box output end connected with corresponding Wiring harness terminal and (inserting mode can be used) it is complete
After good, the first HV Terminal H1 and the sub- H2 of second high-pressure side in each Wiring harness terminal respectively with the positive pole in high-tension connector and
Two HV Terminals of negative pole are connected, meanwhile, the mutual locking wire S1 of the first low pressure and the mutual locking wire S2 of the second low pressure in each Wiring harness terminal
It is connected respectively with two low pressure interlocking terminal of corresponding high-tension connector, now, the mutual locking wire of the first low pressure in Wiring harness terminal
The mutual locking wire S3 of depression belt short circuit that the S1 and mutual locking wire S2 of the second low pressure connects inside machine by high pressure is shorted together, so that
Resistance short circuit in parallel between the mutual locking wire S1 of first low pressure and the mutual locking wire S2 of the second low pressure in corresponding Wiring harness terminal.
When the high-tension connector of high-tension distribution box output end is all connected with intact, because first in each Wiring harness terminal is low
Resistance in parallel between mutual locking wire S1 and the mutual locking wire S2 of the second low pressure is pressed to be shorted, therefore, the first of high-voltage interlocking unit 10 is defeated
It is conductor resistance value to go out to hold the resistance on OUT1 and the second output end OUT2 (close to 0 ohm).
When any one high-tension connector of high-tension distribution box output end disconnects, such as high pressure corresponding to first resistor R1
Connector disconnects, then in the first HV Terminal H1 in the corresponding Wiring harness terminal and sub- H2 of second high-pressure side and high-tension connector
Two HV Terminals of positive pole and negative pole disconnect, while the mutual locking wire S1 of the first low pressure and the mutual locking wire S2 of the second low pressure in Wiring harness terminal
Also will be switched off with two low pressure of high-tension connector interlocking terminal, now, the first output end OUT1 of high-voltage interlocking unit 10 and
The resistance that resistance on second output end OUT2 is first resistor R1；When multiple high-tension connectors of high-tension distribution box output end break
When opening, such as high-tension connector corresponding to first resistor R1 and second resistance R2 disconnects, then the first of high-voltage interlocking unit 10
The resistance sum that resistance on output end OUT1 and the second output end OUT2 is first resistor R1 and second resistance R2.Due to each
The resistance of resistance differs, and therefore, passes through the first output end OUT1 and the second output end OUT2 to high-voltage interlocking unit 10
On change in resistance judge can quickly and be accurately judged to high-tension connector disconnect particular location and quantity.
According to one embodiment of present invention, it is in preset ratio relation between resistance corresponding to N number of resistance.Wherein, preset
Proportionate relationship is R1：R2：R3：……：Rn=1：2：4：……：2n。
Specifically, as shown in Fig. 2 when high-tension distribution box output end has five high-tension connectors, five high pressure connections
Device can be combined into 32 kinds of states, in order to distinguish 32 kinds of states, it is necessary to strictly be matched to the resistance of parallel connection.Equally
, when high-tension distribution box output end has N number of high-tension connector, high-tension connector can be combined into 2NKind state, therefore, at this
In the embodiment of invention, when high-tension distribution box output end has N number of high-tension connector, the ratio between resistance corresponding to N number of resistance
Example relation is R1：R2：R3：……：Rn=1：2：4：……：2n, N number of high pressure may determine that by such resistors match
The 2 of connectorNKind state, is embodied on the first output end OUT1 and the second output end OUT2 of high-voltage interlocking unit 10
Resistance has 2NKind.
According to one embodiment of present invention, one end of first resistor is as the first output in the N number of resistance being connected in series
Hold, the other end of N resistance is as the second output end in the N number of resistance being connected in series.
According to one embodiment of present invention, as shown in Fig. 2 detection unit 20 specifically includes：Pull-up resistor RL, the first electricity
Hold C1, divider resistance Rz, the second electric capacity C2 and controller 21, wherein, pull-up resistor RL and the first electric capacity C1 are connected in series, series connection
The pull-up resistor RL of connection and the first electric capacity C1 is connected between default power supply VCC and ground GND, the pull-up resistor RL being connected in series
And first have first node J1 between electric capacity C1, there is section point J2, first node J1 between the first electric capacity C1 and ground GND
It is connected with the first output end OUT1, section point J2 is connected with the second output end OUT2, divider resistance Rz one end and first segment
Point J1 is connected, and the second electric capacity C2 one end is connected with section point J2, and the second electric capacity C2 other end is another with divider resistance Rz's
One end is connected, and controller 21 has an AD test sides, AD test sides respectively with the divider resistance Rz other end and the second electric capacity C2
The other end is connected.
Specifically, when the high-tension connector of high-tension distribution box output end is reliably connected, in high-voltage interlocking unit 10
Resistance is short-circuited, and now, the resistance on the first output end OUT1 and the second output end OUT2 of high-voltage interlocking unit 10 is to lead
Line resistance value (close to 0 ohm), therefore the voltage that controller 21 is read by AD test sides is 0V.
When any one high-tension connector open circuit of high-tension distribution box output end, the first output of high-voltage interlocking unit 10
The resistance on OUT1 and the second output end OUT2 is held as the resistance of the resistance corresponding to the high-tension connector of open circuit occurs, due to electricity
The resistance of resistance is in preset ratio relation, therefore, the voltage that controller 21 is read by AD test sides be also it is different, so as to
The particular location of the high-tension connector of open circuit is accurately judged to according to the voltage of reading；It is any more when high-tension distribution box output end
During individual high-tension connector open circuit, the resistance on the first output end OUT1 and the second output end OUT2 of high-voltage interlocking unit 10 is hair
The resistance sum of resistance corresponding to the high-tension connector of raw open circuit, because the resistance of resistance is in preset ratio relation, therefore, control
The voltage that device 21 processed is read by AD test sides be also it is different, it is quick and be accurately judged to so as to the voltage according to reading
The particular location and quantity of the high-tension connector of open circuit, it effectively prevent the artificial connection shape for testing each high-tension connector one by one
It state, can prevent from manually investigating the omission being likely to occur, while malfunction elimination and maintenance time can be shortened, particularly with high pressure
Distribution box be arranged in car bottom or other when being not easy the position detected, effect is more obvious.
The high-low pressure interlocking detection circuit of electric automobile according to embodiments of the present invention, due to the in each Wiring harness terminal
The resistance of resistance in parallel is different between the mutual locking wire of one low pressure and the mutual locking wire of the second low pressure, when any one in high-tension connector
Or multiple high-tension connectors are when occurring breaking, the first output end of high-voltage interlocking unit with the resistance of the second output end output not
Together, therefore detection unit can generate corresponding detection signals according to the different resistances of high-voltage interlocking unit output, and according to corresponding
Detection signal identifies the connection status between each high-tension connector and corresponding Wiring harness terminal, so as to sentence quickly and accurately
Break and the particular location and quantity of the breaking high-tension connector of generation, improve the malfunction elimination efficiency of maintenance personal.
In addition, embodiments of the invention also proposed a kind of electric automobile, it includes the high-low pressure of above-mentioned electric automobile
Interlocking detection circuit.
The electric automobile of the embodiment of the present invention, can be quick by the high-low pressure interlocking detection circuit of above-mentioned electric automobile
And it is accurately judged to occur the particular location and quantity of the high-tension connector of open circuit, failure caused by artificial investigation can be prevented
Omit, at the same can greatly shorten malfunction elimination and maintenance time, particularly with high-tension distribution box be arranged in car bottom or
Other when being not easy the position detected, effect is more obvious.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (8)
- A kind of 1. high-low pressure interlocking detection circuit of electric automobile, it is characterised in that including：N number of Wiring harness terminal, each Wiring harness terminal in N number of Wiring harness terminal includes the mutual locking wire of the first low pressure and the second low pressure is mutual Locking wire, wherein, N is the integer more than 1；High-voltage interlocking unit, the high-voltage interlocking unit include N number of resistance, the first output end and the second output being connected in series End, each resistance in N number of resistance correspond the mutual locking wire of the first low pressure that is connected in parallel in each Wiring harness terminal and Between the mutual locking wire of second low pressure, and the resistance of each resistance is different, and the high-voltage interlocking unit is according to N number of wire harness Connection in terminal and high-tension distribution box between N number of high-tension connector passes through first output end and second output End exports different resistances；Detection unit, the detection unit are connected with first output end and second output end respectively, and the detection is single The different resistances that member exports according to the high-voltage interlocking unit generate corresponding detection signals, and are known according to the corresponding detection signals Connection status between not each high-tension connector and corresponding Wiring harness terminal.
- 2. the high-low pressure interlocking detection circuit of electric automobile according to claim 1, it is characterised in that each wire harness Terminal also includes the first HV Terminal and second high-pressure side, and first HV Terminal and second high-pressure side are sub with corresponding height HV Terminal in pressure connector matches.
- 3. the high-low pressure interlocking detection circuit of electric automobile according to claim 1 or 2, it is characterised in that described each High-tension connector also includes the mutual locking wire of depression belt short circuit, the mutual locking wire of depression belt short circuit and first in corresponding Wiring harness terminal The mutual locking wire of low pressure and the mutual locking wire of the second low pressure match, each to locate described between high-tension connector and corresponding Wiring harness terminal When connected state so that resistance in parallel between the mutual locking wire of the first low pressure and the mutual locking wire of the second low pressure in corresponding Wiring harness terminal Short circuit.
- 4. the high-low pressure interlocking detection circuit of electric automobile according to claim 1, it is characterised in that N number of resistance It is in preset ratio relation between corresponding resistance.
- 5. the high-low pressure interlocking detection circuit of electric automobile according to claim 4, it is characterised in that the preset ratio Relation is R1：R2：R3：……：Rn=1：2：4：……：2n。
- 6. the high-low pressure interlocking detection circuit of electric automobile according to claim 1, it is characterised in that described to be connected in series N number of resistance in first resistor one end as first output end, N resistance in the N number of resistance being connected in series The other end is as second output end.
- 7. the high-low pressure interlocking detection circuit of electric automobile according to claim 1, it is characterised in that the detection unit Specifically include：The pull-up resistor and the first electric capacity being connected in series, the pull-up resistor being connected in series and the first capacitance connection are in default electricity Between source and ground, there is first node, first electric capacity and ground between the pull-up resistor being connected in series and the first electric capacity Between there is section point, the first node is connected with first output end, the section point with described second output End is connected；Divider resistance, one end of the divider resistance are connected with the first node；Second electric capacity, one end of second electric capacity are connected with the section point, the other end of second electric capacity with it is described The other end of divider resistance is connected；Controller, the controller have an AD test sides, the AD test sides other end with the divider resistance and institute respectively The other end for stating the second electric capacity is connected.
- 8. a kind of electric automobile, it is characterised in that include the height of the electric automobile according to any one of claim 1-7 Pressure interlocking detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510703781.5A CN105270184B (en) | 2015-10-26 | 2015-10-26 | Electric automobile and high-low voltage interlocking detection circuit thereof |
Applications Claiming Priority (1)
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| CN106143161A (en) * | 2016-08-24 | 2016-11-23 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of high pressure monitoring device of electric automobile |
| CN106828110A (en) * | 2017-03-03 | 2017-06-13 | 镇江海姆霍兹传热传动系统有限公司 | Vehicle high-voltage bus safety protector |
| CN106926705A (en) * | 2017-04-21 | 2017-07-07 | 阿尔特汽车技术股份有限公司 | Electric automobile high-voltage mutual interlocking gear |
| CN108732449A (en) * | 2017-04-25 | 2018-11-02 | 上海汽车集团股份有限公司 | High-voltage interlocking circuit and its fault detection method |
| CN107219437B (en) * | 2017-05-27 | 2019-12-17 | 北京新能源汽车股份有限公司 | High-voltage interlocking detection circuit, method and device and automobile |
| JP6984255B2 (en) * | 2017-09-08 | 2021-12-17 | 株式会社デンソー | Failure detector |
| CN108058599A (en) * | 2017-12-14 | 2018-05-22 | 重庆长安汽车股份有限公司 | A kind of automobile and its high-voltage interlocking detection circuit |
| JP6973088B2 (en) * | 2018-01-04 | 2021-11-24 | いすゞ自動車株式会社 | Interlock system |
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| CN103072485A (en) * | 2013-01-16 | 2013-05-01 | 惠州市亿能电子有限公司 | High-voltage interlocking circuit of electric automobile |
| GB2517184B (en) * | 2013-08-14 | 2016-01-20 | Jaguar Land Rover Ltd | Method and system for controlling an isolated HV circuit |
| CN203611766U (en) * | 2013-10-23 | 2014-05-28 | 北汽福田汽车股份有限公司 | High-voltage safety interlocking system for electric automobile |
| CN205130948U (en) * | 2015-10-26 | 2016-04-06 | 北京新能源汽车股份有限公司 | Electric automobile and high-low voltage interlocking detection circuit thereof |
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