CN203611766U - High-voltage safety interlocking system for electric automobile - Google Patents
High-voltage safety interlocking system for electric automobile Download PDFInfo
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- CN203611766U CN203611766U CN201320658204.5U CN201320658204U CN203611766U CN 203611766 U CN203611766 U CN 203611766U CN 201320658204 U CN201320658204 U CN 201320658204U CN 203611766 U CN203611766 U CN 203611766U
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Abstract
The utility model discloses a high-voltage safety interlocking system for an electric automobile. A positive electrode contactor and a negative electrode contactor are respectively arranged at a positive electrode and a negative electrode of a high-voltage load, and the control of the positive electrode contactor and the negative electrode contact on the on-off state of a high-voltage load circuit can be realized; through the arrangement of a low-voltage power supply, a control switch and a control relay connected in series with the high-voltage load, the control on the grounding on-off state of the coil ends of the positive electrode contactor and the negative electrode contactor can be realized, further, the control on the on-off state of the positive electrode and the negative electrode of the high-voltage load is realized, the automatic cutting off of a high-voltage circuit when the circuit continuity is damaged can be realized, and the motive power safety of an automobile high-voltage system is improved. The high-voltage safety interlocking system has the advantages that only through the improvement on hardware, the safety performance of the system can be improved, the structure is simple, the cost is low, and the high-voltage safety interlocking system can be easily arranged and implemented on the automobiles.
Description
Technical field
The utility model relates to electronlmobil field, especially relates to a kind of electric automobile high-voltage safety system.
Background technology
Along with the development of pure electric automobile, there is increasing high-voltage load to be configured on high voltage bus, these equipment all need high voltage supply, such as drive motor, high-pressure air conditioner, power steerig pump, compressor inversion device etc.This demand makes the safety performance of high-pressure system become requisite part, the mode that current high-voltage safety system adopts hardware and software to combine mostly, to can improve the safety of high-pressure system in there is partial failure, but the design of current solution is comparatively complicated, cost is higher, and safety is poor, once and be isolated because of partial failure, the problem that causes car load to exercise, is not easy to follow-up maintenance.
Utility model content
The utility model is intended at least solve one of technical matters existing in prior art.For this reason, an object of the present utility model is to propose a kind of simplicity of design, and cost is low, and safety is good, and can solve the electric automobile high-voltage safety interlock system of emergency state down train problem.
According to battery-driven car high-voltage safety interlock system of the present utility model, comprising: high-voltage load and the first master cock; Electrokinetic cell, described electrokinetic cell is connected with described high-voltage load by described the first master cock, wherein, and described the first master cock adhesive, described electrokinetic cell is described high-voltage load power supply; Controller, described controller is connected with coil one end of described the first master cock, for controlling the break-make of described the first master cock; The second master cock, the break-make of the first master cock ground path described in described the second master cock control; Low potential source; And change-over switch, one end of described change-over switch is connected with described low potential source, the other end of described change-over switch comprises gear 1, and described gear 1 is connected with the control end of described the second master cock successively after the high pressure port of described high-voltage load and described electrokinetic cell.
According to electric automobile high-voltage safety interlock system of the present utility model, electrokinetic cell is connected with high-voltage load by contactless switch, by the adhesive of contactless switch, can realize the break-make of multiple high-voltage loads is controlled; By the second master cock that low potential source, change-over switch is set and is connected in series with high-voltage load, electrokinetic cell, the ground connection break-make of coil-end of tentaculum of can achieving a butt joint is controlled, and then realize electrokinetic cell the break-make of multiple high-voltage loads is controlled, to realize in the time that the continuity of high-voltage load circuit is destroyed, high voltage circuit disconnects automatically, has improved the power safety of vehicle high-pressure system.Native system only can improve the safety performance of system by the improvement on hardware, simple in structure, cost is low, be easy on vehicle to arrange and to implement.
In addition, also there is following additional technical feature according to electric automobile high-voltage safety interlock system of the present utility model:
Particularly, the other end of described change-over switch also comprises gear 2, and described gear 2 is directly connected with the control end of described the first master cock.Can make low potential source pass through change-over switch and directly be connected with the control end of the first master cock, for the first master cock provides voltage signal, the ground connection break-make of the coil-end of the tentaculum that achieves a butt joint is controlled, thereby the break-make of the tentaculum that achieves a butt joint is controlled.Like this at et out of order in emergency circumstances, still can make load high pressure normally power on, assurance vehicle can be walked lamely to repair location, for follow-up maintenance is provided convenience.
In examples more of the present utility model, described change-over switch is hilted broadsword on-off switch.
In examples more of the present utility model, described contactless switch comprises: anodal contactless switch and negative pole contactless switch, wherein,
Switch one end of described anodal contactless switch is connected with the positive pole of described electrokinetic cell and the switch other end of described anodal contactless switch is connected with the positive pole of described high-voltage load;
Switch one end of described negative pole contactless switch is connected with the negative pole of described electrokinetic cell and the switch other end of described negative pole contactless switch is connected with the negative pole of described high-voltage load.
In examples more of the present utility model, described the second master cock is relay, coil one end ground connection of described the second master cock, and switch one end ground connection and the other end are connected with coil one end of described the first master cock;
In examples more of the present utility model, described high-voltage load, comprises the motor controller of connection parallel with one another, DC/DC, compressor and inverter.
In examples more of the present utility model, the low tension terminal of described DC/DC is connected with described low potential source.
In examples more of the present utility model, the voltage signal that described low potential source is 12V.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the electric automobile high-voltage safety interlock system circuit diagram according to the utility model embodiment;
Reference numeral:
The first master cock 3; Anodal contactless switch 4; Negative pole contactless switch 5;
High-voltage load 10; Motor controller 11; DC/DC12; Compressor and inverter 13; Other load 14;
The second master cock 6;
Change-over switch 7.
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, orientation or the position relationship of the indications such as term " " center ", " on ", D score, 'fornt', 'back', " left side ", " right side " be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; rather than the device of indication or hint indication or element must have specific orientation, with specific orientation structure with operate, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can particular case understand the concrete meaning of above-mentioned term in the utility model.
In addition,, in description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
Describe according to a kind of electric automobile high-voltage safety interlock system of the utility model embodiment below with reference to Fig. 1, this high-voltage safety interlock system safety is good, simple in structure, cost is low and can solve the driving problem under the emergency state.
According to the electric automobile high-voltage safety interlock system of the utility model embodiment, as shown in Figure 1, comprising: electrokinetic cell 20; The first master cock 3 comprises anodal contactless switch 4 and negative pole contactless switch 5, and anodal contactless switch 4 and negative pole contactless switch 5 are gate-controlled switch, comprise switch terminals and coil-end; The positive pole of electrokinetic cell 20 is connected with switch one end of anodal contactless switch 4, and switch one end of the negative pole of electrokinetic cell 20 and negative pole contactless switch 5 is connected.High-voltage load 10 comprises motor controller 11, DC/DC12, compressor and inverter 13 and other load 14, between these high-voltage loads, be connected in parallel, the both positive and negative polarity of electrokinetic cell 20 is connected with high-voltage load 10 both positive and negative polarities with negative pole contactless switch 5 by anodal contactless switch 4.Controller 30 can be battery management system (BMS), can be also entire car controller.Controller 30 is connected with coil one end of anodal contactless switch 4 and negative pole contactless switch 5 respectively, be used for transmitting control signal, the switch terminals of controlling anodal contactless switch 4 and negative pole contactless switch 5 is communicated with or disconnects, thereby controls being communicated with and disconnection of electrokinetic cell 20 and high-voltage load 10.
Low potential source 8 is connected in parallel on the low tension terminal of DC/DC12, and the voltage signal of 12V is provided.The second master cock 6 has control end, and second master cock 6 coil one end are control end, other end ground connection; Switch one end ground connection of the second master cock 6, the other end is connected with the coil other end of the first master cock 3, the switch other end of the second master cock 6 is connected with the coil other end of anodal contactless switch 4 and negative pole contactless switch 5 respectively, for the control to anodal contactless switch 4 and 5 two device working processs of negative pole contactless switch.The second master cock 6 is relay.Change-over switch 7 is hilted broadsword on-off switch, is provided with two gears, and acquiescence gear is 1 grade, can manual operation be set to 2 grades if needed.One end of change-over switch 7 is connected with low potential source 8, the low-voltage signal of 12V is provided by low potential source 8, and 1 gear of change-over switch 7 other ends is connected with the control end of the second master cock 6 respectively after the high pressure port of other load 14, compressor and inverter 13, DC/DC12, motor controller 11 and electrokinetic cell 20.By the such low voltage circuit of connecting of the second master cock 6 that low potential source 8, change-over switch 7 is set and is connected in series with high-voltage load 10, can realize the ground connection break-make of the coil-end of the second master cock 6 to anodal contactless switch 4 and negative pole contactless switch 5 controls, and then realize positive pole to high-voltage load and the control of negative pole break-make, to realize in the time that the continuity of circuit is destroyed, high voltage circuit disconnects automatically, has improved the power safety of vehicle high-pressure system.
Concrete principle of work is: in the circuit series forming by low potential source 8, change-over switch 7 and with the second master cock 6 that high-voltage load 10 is connected in series, if this circuit is normally communicated with, the voltage signal of the 12V being provided by low potential source 8 can arrive through this circuit the control end of the second master cock 6, one end ground connection of the second master cock 6, there is generation voltage at coil two ends, thereby cause the switch closure of the second master cock 6.Because one end ground connection of the second master cock 6, the other end is connected with coil one end of anodal contactless switch 4 and negative pole contactless switch 5 respectively, therefore, and also therefore ground connection of coil one end of anodal contactless switch 4 and negative pole contactless switch 5.Now, if controller 30 provides voltage signal to the coil other end of anodal contactless switch 4 and negative pole contactless switch 5, the switch terminals of anodal contactless switch 4 and negative pole contactless switch 5 will be closed, thereby turning circuit, electrokinetic cell 20 will be powered to high-voltage load 10 by anodal contactless switch 4 and negative pole contactless switch 5.
Otherwise, by low potential source 8, change-over switch 7 and forming in circuit with the second master cock 6 that high-voltage load 10 is connected in series, if because certain high-voltage load 10 et out of order, this circuit is just in off-state, the voltage signal of the 12V so being provided by low potential source 8 just can not arrive by this circuit the control end of the second master cock 6, coil one end of the second master cock 6 just can not get any voltage signal, therefore the switch terminals of the second master cock 6 just can be not closed, thereby cause coil one end of anodal contactless switch 4 and negative pole contactless switch 5 also cannot ground connection.Therefore, send voltage signal even if work as controller 30, the switch terminals of anodal contactless switch 4 and negative pole contactless switch 5 still can be closed, and so, electrokinetic cell 20 just cannot be powered to high-voltage load 10, thereby this high-pressure system is in a safe condition.
According to the electric automobile high-voltage safety interlock system of the utility model embodiment, as shown in Figure 1, also comprise: the gear 2 of the other end of change-over switch 7 is directly connected with the control end of the second master cock 6.Now, the voltage signal being provided by low potential source 8 does not need the high pressure port through other load 14, compressor and inverter 13, DC/DC12, motor controller 11 and electrokinetic cell 20, but be directly connected with the control end of the second master cock 6, for the second master cock provides voltage signal, thereby realize by the break-make control of anodal contactless switch 4 and negative pole contactless switch 5.Its working process is, when the local et out of order of high-voltage load 10, there is insulation fault in for example compressor and inverter 13, causes when car load cannot normally travel, now can disconnect the high tension supply of compressor and inverter 13, the impact of isolated fault parts on system.Then change-over switch 7 is set to 2 grades, by change-over switch 72 grades of the 12V voltage signal that low potential source 8 provides directly arrive the control end of the second master cock 6 afterwards, second master cock 6 one end ground connection, therefore the switch of the second master cock 6 will be closed, thereby control coil one end ground connection of anodal contactless switch 4 and negative pole contactless switch 5.When controller 30 sends after control signal, the switch of anodal contactless switch 4 and negative pole contactless switch 5 will be closed, thereby electrokinetic cell 20 just can be given for example motor controller 11 of high-voltage load 10() power supply.Like this, at et out of order in emergency circumstances, can be still that high-voltage load 10 normally powers on, assurance vehicle can be walked lamely to repair location, for after-sales service is provided convenience.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.
Claims (8)
1. an electric automobile high-voltage safety interlock system, is characterized in that, comprising:
High-voltage load (10) and the first master cock (3);
Electrokinetic cell (20), described electrokinetic cell (20) is connected with described high-voltage load (10) by described the first master cock (3), wherein, and described the first master cock (3) adhesive, described electrokinetic cell (20) is described high-voltage load (10) power supply;
Controller (30), described controller (30) is connected with coil one end of described the first master cock (3), for controlling the break-make of described the first master cock (3);
The second master cock (6), described the second master cock (6) is controlled the break-make of described the first master cock (3) ground path;
Low potential source (8); And
Change-over switch (7), one end of described change-over switch (7) is connected with described low potential source (8), the other end of described change-over switch (7) comprises gear 1, and described gear 1 is connected with the control end of described the second master cock (6) successively after the high pressure port of described high-voltage load (10) and described electrokinetic cell (20).
2. electric automobile high-voltage safety interlock system according to claim 1, is characterized in that, the other end of described change-over switch (7) also comprises gear 2, and described gear 2 is directly connected with the control end of described the first master cock (6).
3. electric automobile high-voltage safety interlock system according to claim 2, is characterized in that, described change-over switch (7) is hilted broadsword on-off switch.
4. electric automobile high-voltage safety interlock system according to claim 1, is characterized in that, described the first master cock (3) comprising: anodal contactless switch (4) and negative pole contactless switch (5), wherein,
Switch one end of described anodal contactless switch (4) is connected with the positive pole of described electrokinetic cell (20) and the switch other end of described anodal contactless switch (4) is connected with the positive pole of described high-voltage load (10);
Switch one end of described negative pole contactless switch (5) is connected with the negative pole of described electrokinetic cell (20) and the switch other end of described negative pole contactless switch (5) is connected with the negative pole of described high-voltage load (10).
5. electric automobile high-voltage safety interlock system according to claim 1, it is characterized in that, described the second master cock (6) is relay, coil one end ground connection of described the second master cock (6), switch one end ground connection and the other end are connected with coil one end of described the first master cock (3).
6. electric automobile high-voltage safety interlock system according to claim 1, is characterized in that, described high-voltage load (10) comprises the motor controller (11) of connection parallel with one another, DC/DC(12), compressor and inverter (13).
7. electric automobile high-voltage safety interlock system according to claim 6, is characterized in that, described DC/DC(12) low tension terminal be connected with described low potential source (8).
8. electric automobile high-voltage safety interlock system according to claim 1, is characterized in that, described low potential source (8) is 12V low potential source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320658204.5U CN203611766U (en) | 2013-10-23 | 2013-10-23 | High-voltage safety interlocking system for electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320658204.5U CN203611766U (en) | 2013-10-23 | 2013-10-23 | High-voltage safety interlocking system for electric automobile |
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| Publication Number | Publication Date |
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| CN203611766U true CN203611766U (en) | 2014-05-28 |
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| CN201320658204.5U Expired - Fee Related CN203611766U (en) | 2013-10-23 | 2013-10-23 | High-voltage safety interlocking system for electric automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290604A (en) * | 2014-09-26 | 2015-01-21 | 湖南南车时代电动汽车股份有限公司 | High-voltage safety control system and method of electric vehicle power system |
| CN105235523A (en) * | 2015-09-21 | 2016-01-13 | 郑州宇通客车股份有限公司 | Vehicle charging and travelling interlocking method |
| CN105270184A (en) * | 2015-10-26 | 2016-01-27 | 北京新能源汽车股份有限公司 | Electric automobile and high-low voltage interlocking detection circuit thereof |
| CN105946587A (en) * | 2016-07-11 | 2016-09-21 | 安庆新景技电子科技有限公司 | Interlock switch loop used for electric vehicle |
| CN110857031A (en) * | 2018-08-07 | 2020-03-03 | 通用汽车环球科技运作有限责任公司 | Electrical system with high voltage system locking function |
-
2013
- 2013-10-23 CN CN201320658204.5U patent/CN203611766U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290604A (en) * | 2014-09-26 | 2015-01-21 | 湖南南车时代电动汽车股份有限公司 | High-voltage safety control system and method of electric vehicle power system |
| CN104290604B (en) * | 2014-09-26 | 2016-04-27 | 湖南南车时代电动汽车股份有限公司 | The high-voltage safety control system of power system of electric automobile and control method thereof |
| CN105235523A (en) * | 2015-09-21 | 2016-01-13 | 郑州宇通客车股份有限公司 | Vehicle charging and travelling interlocking method |
| CN105270184A (en) * | 2015-10-26 | 2016-01-27 | 北京新能源汽车股份有限公司 | Electric automobile and high-low voltage interlocking detection circuit thereof |
| CN105946587A (en) * | 2016-07-11 | 2016-09-21 | 安庆新景技电子科技有限公司 | Interlock switch loop used for electric vehicle |
| CN110857031A (en) * | 2018-08-07 | 2020-03-03 | 通用汽车环球科技运作有限责任公司 | Electrical system with high voltage system locking function |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180416 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing treasure Car Co.,Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20211023 |