CN103358913A - High-voltage safe interlocking system - Google Patents
High-voltage safe interlocking system Download PDFInfo
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- CN103358913A CN103358913A CN2012101002594A CN201210100259A CN103358913A CN 103358913 A CN103358913 A CN 103358913A CN 2012101002594 A CN2012101002594 A CN 2012101002594A CN 201210100259 A CN201210100259 A CN 201210100259A CN 103358913 A CN103358913 A CN 103358913A
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Abstract
The invention provides a high-voltage safe interlocking system. A positive electrode contactor and a negative electrode contractor are respectively arranged on a positive electrode and a negative electrode of a high-voltage load, a control relay connected with the high-voltage load in series is further arranged, and high-voltage interlocking signals are led into a high-voltage load return circuit, so that ground connection and disconnection of a control end of the positive electrode contactor and a control end of the negative electrode contractor are controlled through the control relay, the control over the connection and disconnection of the positive electrode and the negative electrode of the high-voltage load are achieved, and the purposes that high voltage is automatically turned off when a circuit is damaged continuously and power safety of a vehicle high-voltage system are achieved. The high-voltage safe interlocking system is simple in structure and low in cost, and can be easily arranged and implemented on vehicles, and suitable for various hybrid power vehicles and full electric vehicles using high-voltage electricity.
Description
Technical field
The present invention relates to the High-Voltage Technology field, particularly a kind of high-voltage safety interlock system of vehicle.
Background technology
The air quality that causes goes from bad to worse and the gradually scarcity of oil resources along with traditional fuel-engined vehicle discharges, and the new-energy automobile of exploitation anti-emission carburetor, low oil consumption becomes the urgent task of current auto-industry circle.Hybrid vehicle and electronlmobil be as the representative of new-energy automobile, more and more approaching aspect performance and the economy even be better than traditional fuel-engined vehicle.
But hybrid vehicle and electronlmobil use high-tension current as power source, so exist high pressure to expose the potential safety hazard that produces at the circuit structure of car load.For example, for the loop of bonding conductor and adaptor union, when the staff disconnects certain bonding conductor or adaptor union, may cause high pressure that the open place produce to expose and produce dangerous to staff's personal safety.
Therefore, need a kind of high-voltage safety interlock system, the circuit structure of the vehicle that uses high-tension current is monitored eliminating with potential safety hazard, to improve the power safety of hybrid vehicle and electronlmobil.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, and a kind of high-voltage safety interlock system particularly is provided, and solves or avoid to occur the potential safety hazard that high pressure that hybrid vehicle and electronlmobil exist at circuit structure exposes.
For achieving the above object, the invention provides a kind of high-voltage safety interlock system, comprising: electrokinetic cell is used to high-voltage load that operating voltage is provided; Anodal contactless switch comprises the first switch and the first coil, and the positive pole of described electrokinetic cell is connected with the positive pole of described high-voltage load by described the first switch; The negative pole contactless switch comprises second switch and the second coil, and the negative pole of described electrokinetic cell is connected with the negative pole of described high-voltage load by described second switch; Low potential source is used to control relay that operating voltage is provided; Described control relay, comprise the 3rd switch and tertiary winding, the first end of the first end of described the first coil and described the second coil is respectively by described the 3rd switch ground connection, the first end ground connection of described tertiary winding, the second end of described tertiary winding is connected with the positive pole of described low potential source with high-voltage load by described electrokinetic cell; Battery management system module, the both positive and negative polarity port of described battery management system module respectively with the second end of described the first coil be connected the second end of the second coil and be connected, be used for controlling the operating voltage of described anodal contactless switch and negative pole contactless switch; With described high-voltage load.
In one embodiment of the invention, this system also comprises: the high pressure central control box, be used to the whole system high voltage power distribution, and described anodal contactless switch, negative pole contactless switch, control relay and battery management system module are arranged in the high pressure central control box.
In one embodiment of the invention, be provided with auxiliary high voltage interface and low pressure control interface on the described high pressure central control box box wall, wherein, high voltage cable between described electrokinetic cell and the high-voltage load connects described high pressure central control box by described auxiliary high voltage interface, and described low pressure control interface is used to whole system to transmit low pressure control and communication signal.
In one embodiment of the invention, described high-voltage load comprises: electric machine controller, drive motor, DC/DC modular power source, compressor inversion device, posistor.
In one embodiment of the invention, the second end of described tertiary winding passes through the negative pole of described electrokinetic cell successively, the positive pole of electrokinetic cell, the positive pole of electric machine controller, the ac output end mouth of electric machine controller, the ac input end mouth of drive motor, the ac output end mouth of electric machine controller, the negative pole of electric machine controller, the high-voltage positive electrode of DC/DC modular power source, the high voltage negative of DC/DC modular power source, the positive pole of compressor inversion device, the ac output end mouth of compressor inversion device, the negative pole of compressor inversion device, the positive pole of posistor, the negative pole of posistor, the low pressure control interface is connected to the positive pole of described low potential source.
In one embodiment of the invention, the positive pole of described low potential source is connected with the low pressure output cathode of described DC/DC modular power source, and the negative pole of described low potential source is connected with the low pressure output negative pole of described DC/DC modular power source and ground connection in the lump.Be that low potential source and the parallel connection of DC/DC modular power source provide operating voltage for control relay.
In one embodiment of the invention, the status information of described battery management system module by gathering electrokinetic cell is with adhesive and the disconnection of the second switch of the first switch of controlling described anodal contactless switch and negative pole contactless switch, to keep the performance of electrokinetic cell.
In one embodiment of the invention, the nominal load current of described anodal contactless switch and negative pole contactless switch is 200A, the nominal load current of described control relay is that 5A is by arranging high-performance both positive and negative polarity contactless switch with the high electric current of coupling high-voltage load, simultaneously by low power control relay is set, realize with hazard free little current signal the electric continuity of circuit being carried out real-time inspection
In one embodiment of the invention, described low potential source provides the 12V operating voltage.
In one embodiment of the invention, described battery management system module provides the 12V operating voltage.
The invention provides a kind of high-voltage safety interlock system, by positive pole and negative pole at high-voltage load anodal contactless switch and negative pole contactless switch are set respectively, and the setting control relay of connecting with high-voltage load, in high-voltage interlocking signal leading high-voltage load loop, thereby by control relay the ground connection break-make of the control end of anodal contactless switch and negative pole contactless switch is controlled, and then realize the positive pole of high-voltage load and the control of negative pole break-make, to be implemented in circuit continuity when destroyed, the automatic cutout high pressure, the power safety of raising vehicle high-pressure system.High-voltage safety interlock system according to the embodiment of the invention is simple in structure, cost is low, be easy to arrange and implement at vehicle, is applicable to motor vehicle driven by mixed power and the pure electric vehicle of various use high-tension currents.
The aspect that the present invention adds and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the structural representation of the high-voltage safety interlock system of the embodiment of the invention one;
Fig. 2 is the structural representation of high-voltage safety interlock system of the electronlmobil of the embodiment of the invention two.
The specific embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
Need to prove that in addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".Further, in description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the invention, need to prove that unless clear and definite regulation and restriction are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be captive joint, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can indirectly link to each other by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can particular case understand above-mentioned term concrete meaning in the present invention.
The invention provides a kind of high-voltage safety interlock system, Figure 1 shows that the structural representation of the high-voltage safety interlock system of the embodiment of the invention one, as shown in Figure 1, this interlock system comprises: electrokinetic cell 1, anodal contactless switch 2, negative pole contactless switch 3, control relay 4, battery management system (BMS) module 5, low potential source 6 and high-voltage load 7.
Wherein, electrokinetic cell 1 is used to high-voltage load 7 that operating voltage is provided, and can be power battery pack in the present embodiment.
Anodal contactless switch 2, negative pole contactless switch 3 and control relay 4 are respectively relay, comprise respectively switch terminals and control end.Particularly, anodal contactless switch 2 comprises the first switch 21 and the first coil 22, and negative pole contactless switch 3 comprises second switch 31 and the second coil 32, and control relay 4 comprises the 3rd switch 41 and tertiary winding 42.The positive pole of electrokinetic cell 1 is connected with the positive pole of high-voltage load 7 by the first switch 21, the negative pole of electrokinetic cell 1 is connected with the negative pole of high-voltage load 7 by second switch 31, can control respectively the break-make of the both positive and negative polarity of high-voltage load 7 by anodal contactless switch 2 and negative pole contactless switch 3 are set.
The first end 321 of the first end 221 of the first coil 22 of anodal contactless switch 2 and the second coil 32 of negative pole contactless switch 3 passes through respectively the 3rd switch 41 ground connection of control relay 4, namely the ground connection break-make of the control end by 4 pairs of anodal contactless switchs 2 of control relay and negative pole contactless switch 3 is controlled, and then is realized the positive pole of high-voltage load and the control of negative pole break-make by the switch terminals of anodal contactless switch 2 and negative pole contactless switch 3.The second end 222 of the first coil 22 of anodal contactless switch 2 is connected with the anodal port of BMS module 5, the second end 322 of the second coil 32 of negative pole contactless switch 3 is connected with the negative pole port of BMS module 5, provides operating voltage by 5 pairs of anodal contactless switchs 2 of BMS module and negative pole contactless switch 3.The status information of BMS module 5 by gathering electrokinetic cell 1 (comprising the voltage, temperature, electric weight of electrokinetic cell etc.) is used for controlling adhesive and the disconnection of the second switch 31 of the first switch 21 of anodal contactless switch and negative pole contactless switch, is in stabilized conditions with the performance that keeps electrokinetic cell.
In the present embodiment, the operating voltage that provides of BMS module 5 can be 12V.Be pointed out that be the high electric current of coupling high-voltage load 7, anodal contactless switch 2 and negative pole contactless switch 3 are high-power components, for example in the present embodiment, the nominal load current of anodal contactless switch 2 and negative pole contactless switch 3 can be 200A.
First end 421 ground connection of the tertiary winding 42 of control relay 4, in preferred embodiment of the present invention, the first end 421 of tertiary winding 42 can with ground connection after the 3rd switch 41 is in parallel.The second end 422 of tertiary winding 42 is connected with high-voltage load by electrokinetic cell 1 and is connected with the positive pole of low potential source 6.Wherein, low potential source 6 is used to control.Relay 4 processed provides operating voltage.In the present embodiment, low potential source 6 can be the storage battery of low pressure 12V.In embodiments of the present invention, by control relay 4 is connected with electrokinetic cell 1 and high-voltage load 7, in high-voltage interlocking signal leading high-voltage load loop, carry out real-time inspection with the electric continuity to the high-voltage load loop, if the continuity of circuit is destroyed, then the control end of control relay 4 (being tertiary winding 42) no current passes through, thereby the switch terminals (the 3rd switch 41) of control relay 4 is disconnected, cause the ground connection of the control end of anodal contactless switch 2 and negative pole contactless switch 3 to disconnect, thereby the positive pole of high-voltage load 7 and the High voltage output of negative pole and electrokinetic cell are disconnected.
In preferred embodiment of the present invention, this system also comprises high pressure central control box 8, is used to the car load high voltage power distribution.Anodal contactless switch 2, negative pole contactless switch 3, control relay 4 and BMS module 5 are arranged in the high pressure central control box 8.Be provided with auxiliary high voltage interface 81 and low pressure control interface 82 on the box wall of high pressure central control box 8, wherein, high voltage cable between electrokinetic cell 1 and the high-voltage load 7 connects high pressure central control box 8 by auxiliary high voltage interface 81, and low pressure control interface 82 is used to car load to transmit low pressure control and communication signal.For example in this enforcement, the connection cable between the positive pole of low potential source 6 and the high-voltage load 7 connects high pressure central control box 8 by low pressure control interface 82; Connection cable between BMS module 5 and the electrokinetic cell 1 is by low pressure control interface 82.
The present invention further provides a kind of high-voltage safety interlock system of electronlmobil, Figure 2 shows that the structural representation of high-voltage safety interlock system of the electronlmobil of the embodiment of the invention two.The difference of Fig. 2 and Fig. 1 only is the high-voltage load part, so remainder is not repeated them here.As shown in Figure 2, high-voltage load comprises: electric machine controller 71, drive motor 72, DC/DC modular power source 73, compressor inversion device 74, PTC (posistor) 75.
The both positive and negative polarity of each high-voltage load is connected with the negative pole contactless switch and is connected with the both positive and negative polarity of electrokinetic cell 1 by anodal contactless switch 2 respectively.Mutually series connection between each high-voltage load, in the present embodiment, concrete connection is as follows: the second end 422 of the tertiary winding 42 of control relay 4 passes through the negative pole of electrokinetic cell 1 successively, the positive pole of electrokinetic cell, the positive pole of electric machine controller 71, the ac output end mouth of electric machine controller 71, the ac input end mouth of drive motor 72, the ac output end mouth of electric machine controller 71, the negative pole of electric machine controller 71, the high-voltage positive electrode of DC/DC modular power source 73, the high voltage negative of DC/DC modular power source 73, the positive pole of compressor inversion device 74, the ac output end mouth of compressor inversion device 74, the negative pole of compressor inversion device 74, the positive pole of PTC 75, the negative pole of PTC75, then low pressure control interface 82 is connected to the positive pole of low potential source 6.
In preferred embodiment of the present invention, the positive pole of low potential source 6 is connected with the low pressure output cathode of DC/DC modular power source 73, and the negative pole of low potential source 6 is connected with the low pressure output negative pole of DC/DC modular power source 73 and ground connection in the lump.Be that low potential source 6 and 73 parallel connections of DC/DC modular power source provide operating voltage for control relay 4, thereby realize that both are the car load low-voltage power supply jointly.
Working process according to the high-voltage safety interlock system of the electronlmobil of the embodiment of the invention two is as follows:
Draw electric signal from the positive pole of low potential source 6, pass through successively the low pressure control interface 82 of high pressure central control box 8, the negative pole of PTC75, the positive pole of PTC75, the negative pole of compressor inversion device 74, the ac output end mouth of compressor inversion device 74, the positive pole of compressor inversion device 74, the high voltage negative of DC/DC power module 73, the high-voltage positive electrode of DC/DC power module 73, the negative pole of electric machine controller 71, the ac output end mouth of electric machine controller 71, the ac input end mouth of drive motor 72, the ac output end mouth of electric machine controller 71, the positive pole of electric machine controller 71, the positive pole of electrokinetic cell 1, the negative pole of electrokinetic cell 1, the tertiary winding ground connection of passing through at last control relay 4.In the intact situation of circuit continuity, the control end energising of control relay 4, control its switch terminals adhesive, the at this moment control end effective grounding of anodal contactless switch 2, negative pole contactless switch 3, BMS 5 output 12V power supplys can be controlled the switch terminals adhesive of anodal contactless switch 2, negative pole contactless switch 3.If circuit continuity is destroyed; this moment, the switch terminals of control relay 4 can not adhesive; the control end ground path of anodal contactless switch 2, negative pole contactless switch 3 disconnects; the switch terminals adhesive of the uncontrollable anodal contactless switch 2 of BMS5 this moment, negative pole contactless switch 3; disconnect the High voltage output of electrokinetic cell thereby force to be connected the both positive and negative polarity of the high-voltage load that is connected respectively with the negative pole contactless switch with anodal contactless switch 2, personal security is protected in realization.
The invention provides a kind of high-voltage safety interlock system, by positive pole and negative pole at high-voltage load anodal contactless switch and negative pole contactless switch are set respectively, and the setting control relay of connecting with high-voltage load, in high-voltage interlocking signal leading high-voltage load loop, thereby by control relay the ground connection break-make of the control end of anodal contactless switch and negative pole contactless switch is controlled, and then realize the positive pole of high-voltage load and the control of negative pole break-make, to be implemented in circuit continuity when destroyed, the automatic cutout high pressure, the power safety of raising vehicle high-pressure system.High-voltage safety interlock system according to the embodiment of the invention is simple in structure, cost is low, be easy to arrange and implement at vehicle, is applicable to motor vehicle driven by mixed power and the pure electric vehicle of various use high-tension currents.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or the example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment that scope of the present invention is by claims and be equal to and limit.
Claims (10)
1. high-voltage safety interlock system comprises:
Electrokinetic cell is used to high-voltage load that operating voltage is provided;
Anodal contactless switch comprises the first switch and the first coil, and the positive pole of described electrokinetic cell is connected with the positive pole of described high-voltage load by described the first switch;
The negative pole contactless switch comprises second switch and the second coil, and the negative pole of described electrokinetic cell is connected with the negative pole of described high-voltage load by described second switch;
Low potential source is used to control relay that operating voltage is provided;
Described control relay, comprise the 3rd switch and tertiary winding, the first end of the first end of described the first coil and described the second coil is respectively by described the 3rd switch ground connection, the first end ground connection of described tertiary winding, the second end of described tertiary winding is connected with the positive pole of described low potential source with high-voltage load by described electrokinetic cell;
Battery management system module, the both positive and negative polarity port of described battery management system module respectively with the second end of described the first coil be connected the second end of the second coil and be connected, be used for controlling the operating voltage of described anodal contactless switch and negative pole contactless switch; With
Described high-voltage load.
2. high-voltage safety interlock system as claimed in claim 1 is characterized in that, also comprises: the high pressure central control box, described anodal contactless switch, negative pole contactless switch, control relay and battery management system module are arranged in the described high pressure central control box.
3. high-voltage safety interlock system as claimed in claim 2, it is characterized in that, be provided with auxiliary high voltage interface and low pressure control interface on the described high pressure central control box box wall, wherein, high voltage cable between described electrokinetic cell and the high-voltage load connects described high pressure central control box by described auxiliary high voltage interface, high voltage cable between the anodal and described high-voltage load of described low potential source connects described high pressure central control box by described low pressure control interface, and described low pressure control interface is used to whole system to transmit low pressure control and communication signal.
4. high-voltage safety interlock system as claimed in claim 1 is characterized in that, described high-voltage load comprises: electric machine controller, drive motor, DC/DC modular power source, compressor inversion device, posistor.
5. high-voltage safety interlock system as claimed in claim 4, it is characterized in that the second end of described tertiary winding passes through the negative pole of described electrokinetic cell successively, the positive pole of electrokinetic cell, the positive pole of electric machine controller, the ac output end mouth of electric machine controller, the ac input end mouth of drive motor, the ac output end mouth of electric machine controller, the negative pole of electric machine controller, the high-voltage positive electrode of DC/DC modular power source, the high voltage negative of DC/DC modular power source, the positive pole of compressor inversion device, the ac output end mouth of compressor inversion device, the negative pole of compressor inversion device, the positive pole of posistor, the negative pole of posistor, the low pressure control interface is connected to the positive pole of described low potential source.
6. high-voltage safety interlock system as claimed in claim 4, it is characterized in that, the positive pole of described low potential source is connected with the low pressure output cathode of described DC/DC modular power source, and the negative pole of described low potential source is connected with the low pressure output negative pole of described DC/DC modular power source and ground connection in the lump.
7. high-voltage safety interlock system as claimed in claim 1, it is characterized in that, the status information of described battery management system module by gathering described electrokinetic cell is with the first switch of controlling described anodal contactless switch and the second switch of negative pole contactless switch, to keep the performance of described electrokinetic cell.
8. high-voltage safety interlock system as claimed in claim 1 is characterized in that, the nominal load current of described anodal contactless switch and negative pole contactless switch is 200A, and the nominal load current of described control relay is 5A.
9. high-voltage safety interlock system as claimed in claim 1 is characterized in that, described low potential source provides the 12V operating voltage.
10. high-voltage safety interlock system as claimed in claim 1 is characterized in that, described battery management system module provides the 12V operating voltage.
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| CN104890519A (en) * | 2015-05-21 | 2015-09-09 | 唐山轨道客车有限责任公司 | High-voltage safety interlocking system of motor train unit |
| 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 |
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| CN104890519B (en) * | 2015-05-21 | 2017-04-05 | 中车唐山机车车辆有限公司 | EMUs high-voltage safety interlocking system |
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