CN203713584U - Battery cut-off unit of power battery pack - Google Patents

Battery cut-off unit of power battery pack Download PDF

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Publication number
CN203713584U
CN203713584U CN201420065318.3U CN201420065318U CN203713584U CN 203713584 U CN203713584 U CN 203713584U CN 201420065318 U CN201420065318 U CN 201420065318U CN 203713584 U CN203713584 U CN 203713584U
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China
Prior art keywords
voltage interface
battery
positive pole
voltage
interface
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Expired - Fee Related
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CN201420065318.3U
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Chinese (zh)
Inventor
姜点双
赵久志
刘轶鑫
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Anhui Jianghuai Automobile Group Corp
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Priority to CN201420065318.3U priority Critical patent/CN203713584U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Abstract

The utility model discloses a battery cut-off unit of a power battery pack. The battery cut-off unit comprises a main contact of a pre-charging contactor, a current limiting resistor, a main contact of a positive electrode main contactor, a main contact of a first heating contactor and a main contact of a negative electrode main contactor, wherein the main contact of the pre-charging contactor is connected in series between a positive electrode of a battery high-voltage interface and a positive electrode of a power bus high-voltage interface, the main contact of the positive electrode main contactor is electrically connected between the positive electrode of the battery high-voltage interface and the positive electrode of the power bus high-voltage interface, the main contact of the first heating contactor is electrically connected with the positive electrode of the power bus high-voltage interface and a positive electrode of the heating high-voltage interface, the main contact of the negative electrode main contactor is electrically connected with a negative electrode of the battery high-voltage interface and negative electrodes of all other high-voltage interfaces, the positive electrode of the power bus high-voltage interface is electrically connected with a positive electrode of a low-voltage system high-voltage interface. The battery cut-off unit can be at least used for realizing effective distribution of electric appliances of the whole vehicle among a low-voltage system, a power system, a battery heater and an automobile power generator by technicians in the field.

Description

A kind of battery cutting unit of electrokinetic cell bag
Technical field
The utility model relates to the field of power management of plug-in hybrid-power automobile, relates in particular to one and is built in high-tension battery bag, guarantees that car load safety under different operating modes realizes the battery cutting unit that energy switches.
Background technology
In recent years, be accompanied by various countries to the improving constantly of new-energy automobile cry, and the continuous breakthrough of battery technology, the epoch of plug-in hybrid-power automobile arrive.Plug-in hybrid-power automobile generally adopts large capacity, high-voltage battery bag, and this has proposed new challenge with regard to the safe handling of giving power brick, is the High voltage output of controlling power brick by battery cutting unit (BDU) at present.As shown in Figure 1, the hardware circuit part of existing battery cutting unit (BDU) mainly comprises three contactless switchs, respectively anodal main contactor Re4, negative pole main contactor Re8 and preliminary filling contactless switch Re2, wherein, the open contact of preliminary filling contactless switch Re2 and current-limiting resistance R1 are connected between the positive electrode bus of power brick BP and positive terminal of high-voltage cage, the open contact of anodal main contactor Re4 is also connected electrically between the positive electrode bus of power brick BP and positive terminal of high-voltage cage, negative pole main contactor Re8 is connected electrically between the negative pole bus of power brick BP and negative terminals of high-voltage cage.Battery management system, by controlling three contactless switchs, can be realized preliminary filling and power supply to high-voltage cage, then realize next stage power distribution by high-voltage cage.At this, in order to realize the monitoring to power brick outgoing current, conventionally on the output bus of power brick BP, connect current sensor CS, because the negative pole bus of power brick BP is not drawn derived circuit, therefore, this current sensor CS is connected on the negative pole bus bar side of power brick BP conventionally.As can be seen here; existing this kind of battery cutting unit can only be realized the High voltage output of controlling power brick; cannot realize the distribution electric to car load; particularly such as, distribution to loop power such as important low-pressure system (storage battery of normal electricity is provided), cell heater, vehicle-mounted charge, automobile current generators (ISG motor); and then cannot effectively protect power brick, also cannot be optimized design to aspects such as the operating efficiency of continual mileage, ISG motor.
Utility model content
The above defect that the utility model exists in order to solve existing battery cutting unit, provides a kind of those skilled in the art of supplying to the electric effectively battery cutting unit of distribution that carries out of car load.
To achieve these goals, the technical solution adopted in the utility model is: a kind of battery cutting unit of electrokinetic cell bag, the high voltage interface of described battery cutting unit comprises the battery high voltage interface for being connected with power brick, for the low-pressure system high voltage interface being connected with direct current transducer, for the power bus high voltage interface that is connected with the direct-flow input end of inverter, and heating high-pressure interface for being connected with cell heater;
The internal circuit of described battery cutting unit comprises the main contact and the current-limiting resistance that are series at the preliminary filling contactless switch between the positive pole of described battery high voltage interface and the positive pole of described power bus high voltage interface, be electrically connected on the main contact of the anodal main contactor between the positive pole of described battery high voltage interface and the positive pole of described power bus high voltage interface, be electrically connected on the main contact of the heating of first between the positive pole of described power bus high voltage interface and the positive pole of described heating high-pressure interface contactless switch, and be electrically connected on the main contact of the negative pole main contactor between the negative pole of described battery high voltage interface and the negative pole of every other high voltage interface, the positive pole of described power bus high voltage interface is electrically connected with the positive pole of described low-pressure system high voltage interface.
Preferably, described high voltage interface also comprises the vehicle-mounted charge high voltage interface for being connected with onboard charger; The internal circuit of described battery cutting unit also comprises the main contact that is electrically connected on the low-voltage power supply contactless switch between the positive pole of described battery high voltage interface and the positive pole of described low-pressure system high voltage interface, and is electrically connected on the main contact of the charging contactor between the positive pole of described battery high voltage interface and the positive pole of vehicle-mounted charge high voltage interface; The positive pole of described power bus high voltage interface is electrically connected with the positive pole of described low-pressure system high voltage interface by unidirectional controller, flows to described power bus high voltage interface with Limited Current through described low-pressure system high voltage interface.
Preferably, described unidirectional controller is diode or binistor.
Preferably, described battery cutting unit also comprises the main contact that is electrically connected on the heating of second between the positive pole of described battery high voltage interface and the positive pole of described heating high-pressure interface contactless switch.
Preferably, between the negative pole of described battery high voltage interface and the negative pole of every other high voltage interface, be electrically connected with current sensor.
Preferably, described battery cutting unit is also provided with the state detection interfaces for connecting one to one with the secondary contact of all contactless switchs.
Preferably, all high voltage interfaces are the high-tension connector with high-voltage interlocking loop.
Preferably, the main contact of described prediction contactless switch and described current-limiting resistance and the second diode series connection are between the positive pole of described battery high voltage interface and the positive pole of described power bus high voltage interface, the main contact of described anodal main contactor and the 3rd diode series connection, between the positive pole of described battery high voltage interface and the positive pole of power bus high voltage interface, are charged to power brick through power bus high voltage interface with restricting vehicle electrical generator.
The beneficial effects of the utility model are: battery cutting unit of the present utility model at least can be for those skilled in the art to the electric effective distribution between low-pressure system, power system, cell heater, automobile current generator of car load, even can supply those skilled in the art to the electric effective distribution between low-pressure system, power system, cell heater, automobile current generator, onboard charger of car load.
Brief description of the drawings
Fig. 1 is that the one of existing battery cutting unit is implemented structure;
Fig. 2 implements structure according to the one of battery cutting unit described in the utility model;
Fig. 3 shows the cutting unit of battery shown in Fig. 1 circuit structure under heating mode before electric discharge;
Fig. 4 shows the circuit structure of the cutting unit of battery shown in Fig. 1 under precharge mode;
Fig. 5 shows the circuit structure of the cutting unit of battery shown in Fig. 1 under discharge mode;
Fig. 6 shows the cutting unit of battery shown in Fig. 1 circuit structure under heating mode before vehicle-mounted charge;
Fig. 7 shows the circuit structure of the cutting unit of battery shown in Fig. 1 under vehicle-mounted charge pattern;
Fig. 8 shows according to the another kind of battery cutting unit described in the utility model and implements structure.
Drawing reference numeral:
Re1-low-voltage power supply contactless switch; Re2-preliminary filling contactless switch;
The anodal main contactor of Re4-; Re5-charging contactor;
Re6-second heats contactless switch; Re7-first heats contactless switch;
Re8-negative pole main contactor; D1-diode;
Jdc-low-pressure system high voltage interface; Jin-power bus high voltage interface;
Jch-vehicle-mounted charge high voltage interface; Jp-heating high-pressure interface;
BP-power brick; CS-current sensor;
KS-service switch.1-direct current transducer;
2-inverter; 3-Vehicular charger;
4-cell heater; Jbp-battery high voltage interface.
Detailed description of the invention
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.
As shown in Fig. 2 to Fig. 8, the high voltage interface of the battery cutting unit (BDU) of electrokinetic cell bag of the present utility model comprises the battery high voltage interface Jbp for being connected with power brick BP, being used for direct current transducer 1(is DC/DC conv 1, be specially voltage-dropping type DC/DC conv) connect low-pressure system high voltage interface Jdc, for the power bus high voltage interface Jin being connected with the direct-flow input end of inverter 2, and heating high-pressure interface Jp for being connected with cell heater 4, at this, BDU is low-pressure system power supply after direct current transducer 1 step-down is passed through in the output of low-pressure system high voltage interface Jdc, BDU is power system power supply after inverter 2 is passed through in the output of power bus high voltage interface Jin, because the direct-flow input end of inverter 2 is connected with the output of automobile current generator that is for example ISG motor, therefore, being equivalent to power bus high voltage interface Jin is also connected with the output of automobile current generator.
The internal circuit of battery cutting unit of the present utility model (BDU) at least comprises the main contact and the current-limiting resistance R1 that are series at the preliminary filling contactless switch Re2 between the positive pole of battery high voltage interface Jbp and the positive pole of power bus high voltage interface Jin, be electrically connected on the main contact of the anodal main contactor Re4 between the positive pole of battery high voltage interface Jbp and the positive pole of power bus high voltage interface Jin, be electrically connected on the main contact of the heating of first between the positive pole of power bus high voltage interface Jin and the positive pole of heating high-pressure interface Jp contactless switch Re7, and be electrically connected on the main contact of the negative pole main contactor Re8 between the negative pole of battery high voltage interface Jbp and the negative pole of every other high voltage interface (i.e. every other high voltage interface except battery high voltage interface), at this, this power bus high voltage interface Jin can directly be electrically connected with low-pressure system high voltage interface Jdc, be equivalent to remove in Fig. 2 to Fig. 8 the embodiment of diode D1.
As shown in Figure 2, in the time of concrete application, those skilled in the art can control by battery management system BMS the state of each contactless switch in BDU, to realize the electric effective distribution of car load, for above-described embodiment of BDU, can be designed to battery management system (BMS) and control the break-make of each contact of preliminary filling contactless switch Re2 by preliminary filling control port C2, control the break-make of each contact of anodal main contactor Re4 by control of discharge port C4, control the break-make of each contact of the first heating contactless switch Re7 by the first heating control port C7, control the break-make of each contact of negative pole main contactor Re8 by loop control port C8.
On this basis, the mode of above-mentioned BDU is as follows:
When detecting ON signal under shutdown mode, BMS (detects when ignition key is threaded to the ON signal positive rise of ON shelves output), start wake up and discharge before self-inspection, self-inspection before this electric discharge comprises the temperature inspection before electric discharge, be specially and obtain temperature value before the electric discharge of power brick BP each point (obtain by being arranged on each temperature sensor on power brick desired location the electric discharge of power brick corresponding position before temperature value), when if temperature value is less than the first temperature value of setting before minimum electric discharge wherein, (this first temperature value can be set to-5 DEG C~5 DEG C, conventionally can be set to 0 DEG C), control BDU and enter the front heating mode of electric discharge as shown in Figure 3, make the main contact adhesive of the first heating contactless switch Re7 through first heating control port C7 output the first heating control signal, and output engine actuation signal is to entire car controller (VCU), make VCU start the work of engine driving automobile electrical generator, like this, automobile current generator will be that cell heater 4 and direct current transducer 1 are powered by power bus high voltage interface Jin, cell heater 4 is heated power brick BP, it is low-pressure system (being the storage battery of low-pressure system) makeup energy simultaneously, if when before minimum electric discharge, temperature value is more than or equal to the first temperature value of setting, by the temperature inspection before electric discharge.In process power brick BP being heated at cell heater 4, in the time that BMS detects that minimum temperature value is more than or equal to the second temperature value, (this second temperature value can equal the first temperature value, but be preferably compared with the first temperature value high 1 DEG C~5 DEG C, for example high 2 DEG C), BMS stops exporting the first heating control signal disconnects the main contact of the first heating contactless switch Re7, and output engine danger signal is to VCU, quits work to control automobile current generator.
BMS is after self-inspection success, in the time START pulse being detected, (ignition key is threaded to after START shelves, ignition key can automatically reset to ON shelves, therefore, ignition key is threaded to after START shelves, can produce the positive rise pulse of about 200ms), BMS controls BDU and enters precharge mode as shown in Figure 4, under this pattern, BMS makes the main contact adhesive of preliminary filling contactless switch Re2 through preliminary filling control port C2 output preliminary filling control signal, and make the main contact adhesive of negative pole main contactor Re8 through loop control port C8 output powered battery control signal, now, power brick BP is that direct current transducer 1 is powered, and the power bus being connected between power bus high voltage interface Jin and the input end of inverter 2 is carried out to precharge, for example, when detecting that power bus magnitude of voltage stops preliminary filling while reaching the more than at least 90% of power brick BP both end voltage (being more than 95%), now, as shown in Figure 5, BMS makes the main contact adhesive of anodal main contactor Re4 through control of discharge port C4 output discharge control signal, and to postpone be for example delay time of 100mS~300mS to stop exporting above-mentioned preliminary filling control signal, the main contact of preliminary filling contactless switch Re2 is disconnected, be now that direct current transducer 1 and inverter 2 are powered by the main contact of anodal main contactor Re4 and the main contact of negative pole main contactor Re8.
As shown in Fig. 2 to Fig. 8, BDU of the present utility model also can set up the electric energy distribution in the time of vehicle-mounted charge of car load, for this enforcement structure, above-mentioned high voltage interface also can comprise the vehicle-mounted charge high voltage interface Jch for being connected with Vehicular charger 3, accordingly, the internal circuit of BDU also comprises the main contact that is electrically connected on the low-voltage power supply contactless switch Re1 between the positive pole of battery high voltage interface Jbp and the positive pole of low-pressure system high voltage interface Jdc, and be electrically connected on the main contact of the charging contactor Re5 between the positive pole of battery high voltage interface Jdc and the positive pole of vehicle-mounted charge high voltage interface Jch, in addition, the positive pole of above-mentioned power bus high voltage interface Jin is electrically connected with the positive pole of low-pressure system high voltage interface Jdc through a unidirectional controller, flows to power bus high voltage interface Jin with Limited Current through low-pressure system high voltage interface Jdc.This unidirectional controller can adopt the simplest diode D1 to realize, also can be for example the binistor of contactless switch, by the break-make of BMS master cock device, can prevent that electric current from flowing to power bus high voltage interface Jin through low-pressure system high voltage interface Jdc under heating mode and under vehicle-mounted charge pattern before vehicle-mounted charge.
In like manner, as shown in Figure 2, in the time of concrete application, those skilled in the art can control by battery management system BMS the state of other contactless switchs in BDU, to realize the electric effective distribution of car load, for example, can be designed to battery management system (BMS) by the break-make of each contact of low-voltage power supply control port C1 control low-voltage power supply contactless switch Re1, control the break-make of each contact of charging contactor Re5 by charging control port C5.
The control method of above-mentioned BDU in the time carrying out vehicle-mounted charge is as follows:
After the corresponding port of vehicle-mounted charge high voltage interface Jch and BMS is connected with Vehicular charger 3 by charging connecting device, the 12V wake-up signal of Vehicular charger 3 will wake BMS up, BMS carries out the self-inspection before vehicle-mounted charge, after self-inspection before vehicle-mounted charge is passed through, BMS controls BDU and enters vehicle-mounted charge pattern as shown in Figure 7, now, BMS makes the main contact adhesive of low-voltage power supply contactless switch Re1 through low-voltage power supply control port C1 output low-voltage power supply signal, make charging contactor Re5 adhesive through charging control port C5 output charging control signal, and make the main contact adhesive of negative pole main contactor Re8 through loop control port C8 output powered battery control signal, and then give power brick BP charging by Vehicular charger 3, and to make Vehicular charger 3 be that direct current transducer 1 is powered by low-voltage power supply contactless switch Re1, now, because of the effect of unidirectional controller, can prevent that Vehicular charger 3 from distributing electric energy to power bus high voltage interface Jin.
Because carrying out charging in the situation that temperature is lower, power brick BP can affect the service life of charging effect and power brick BP, therefore, when self-inspection before BMS carries out vehicle-mounted charge, conventionally to detect the front temperature value of charging of power brick, need to before charging, heat power brick judging whether, for this reason, the internal circuit of BDU of the present utility model also can comprise the main contact that is electrically connected on the heating of second between the positive pole of battery high voltage interface Jch and the positive pole of heating high-pressure interface Jp contactless switch Re6, BMS can control by the second heating control port C6 the break-make of each contact of the second heating contactless switch Re6.Like this, when self-inspection before BMS charges, obtain the front temperature value of charging of the each point of power brick, if wherein lower than the 3rd temperature value, (the 3rd temperature value can be set to-5 DEG C~5 DEG C to the front temperature value of minimum charging, conventionally can be set to 0 DEG C) time, control BDU and enter the front heating mode of vehicle-mounted charge as shown in Figure 6, now, BMS makes the main contact adhesive of the second heating contactless switch Re6 through second heating control port C6 output the second heating control signal, make the main contact adhesive of low-voltage power supply contactless switch Re1 through low-voltage power supply control port C1 output low-voltage power supply signal, and make the main contact adhesive of charging contactor Re5 through charging control port C5 output charging control signal, now, power for cell heater 4 and direct current transducer 1 by Vehicular charger 3, at this, because the main contact of negative pole main contactor Re8 is in off-state, therefore, can prevent power brick BP further electric discharge under this state, again due to the effect of unidirectional controller, can prevent that Vehicular charger 3 from distributing electric energy to power bus high voltage interface Jin.Before BMS detects wherein minimum charging, temperature value is more than or equal to the 4th temperature value (the 4th temperature value can equal the 3rd temperature value, be preferably more than the 3rd temperature value, conventionally compared with the 3rd temperature value high 1 DEG C~10 DEG C, for example high 7 DEG C) time, control BDU and enter vehicle-mounted charge pattern as shown in Figure 7, now, BMS only need stop exporting the second heating control signal before vehicle-mounted charge under heating mode, the main contact of the second heating contactless switch Re6 is disconnected, and make the main contact adhesive of negative pole main contactor Re8 through loop control port C8 output powered battery control signal.
As shown in Figure 2, BMS is in standby mode, and all contactless switchs that BMS controls BDU all disconnect, so that high-voltage safety hidden danger is dropped to minimum.
As shown in Fig. 2 to Fig. 8, similar with existing BDU structure, in order to detect the outgoing current of power brick BP, conventionally can between the negative pole of battery high voltage interface Jbp and the negative pole of every other high voltage interface, be electrically connected a current sensor CS.
In addition, BDU of the present utility model can arrange the state detection interfaces with the corresponding electrical connection of secondary contact of all contactless switchs, make BMS can pass through the state of all contactless switchs of state detection interfaces Real-Time Monitoring, to avoid because of thermal runaway and the bonding uncertain potential safety hazard of bringing.
All high voltage interfaces in the utility model all can adopt the high-tension connector with high-voltage interlocking loop, like this, BMS, by the high-voltage interlocking loop of each high-tension connector, can judge the coupled condition of high-tension connector, avoids bringing safety hazard because high-tension connector gets loose.
In addition, if there is power brick BP and the automobile current generator situation for power system power supply through inverter 2 simultaneously in practical application, as shown in Figure 8, one second diode D2 can connect on the branch road of the main contact that is connected with prediction contactless switch Re2 between battery high voltage interface Jbp and power bus high voltage interface Jin and current-limiting resistance R1, and one the 3rd diode D3 that connects on the branch road of the main contact that is connected with anodal main contactor Re4 between battery high voltage interface Jbp and power bus high voltage interface Jin, with restricting vehicle electrical generator, under the precharge mode shown in Fig. 4 and under the discharge mode shown in Fig. 5, the power bus high voltage interface through BDU charges to power brick BP.
Describe structure of the present utility model, feature and action effect in detail according to the embodiment shown in graphic above; the foregoing is only preferred embodiment of the present utility model; but the utility model does not limit practical range with shown in drawing; every change of doing according to conception of the present utility model; or be revised as the equivalent embodiment of equivalent variations; when not exceeding yet specification sheets and illustrating contain spiritual, all should be in protection domain of the present utility model.

Claims (8)

1. the battery cutting unit of an electrokinetic cell bag, it is characterized in that, the high voltage interface of described battery cutting unit comprises the battery high voltage interface for being connected with power brick, for the low-pressure system high voltage interface being connected with direct current transducer, for the power bus high voltage interface that is connected with the direct-flow input end of inverter, and heating high-pressure interface for being connected with cell heater;
The internal circuit of described battery cutting unit comprises the main contact and the current-limiting resistance that are series at the preliminary filling contactless switch between the positive pole of described battery high voltage interface and the positive pole of described power bus high voltage interface, be electrically connected on the main contact of the anodal main contactor between the positive pole of described battery high voltage interface and the positive pole of described power bus high voltage interface, be electrically connected on the main contact of the heating of first between the positive pole of described power bus high voltage interface and the positive pole of described heating high-pressure interface contactless switch, and be electrically connected on the main contact of the negative pole main contactor between the negative pole of described battery high voltage interface and the negative pole of every other high voltage interface, the positive pole of described power bus high voltage interface is electrically connected with the positive pole of described low-pressure system high voltage interface.
2. battery cutting unit according to claim 1, is characterized in that, described high voltage interface also comprises the vehicle-mounted charge high voltage interface for being connected with onboard charger; The internal circuit of described battery cutting unit also comprises the main contact that is electrically connected on the low-voltage power supply contactless switch between the positive pole of described battery high voltage interface and the positive pole of described low-pressure system high voltage interface, and is electrically connected on the main contact of the charging contactor between the positive pole of described battery high voltage interface and the positive pole of vehicle-mounted charge high voltage interface; The positive pole of described power bus high voltage interface is electrically connected with the positive pole of described low-pressure system high voltage interface by unidirectional controller, flows to described power bus high voltage interface with Limited Current through described low-pressure system high voltage interface.
3. battery cutting unit according to claim 2, is characterized in that, described unidirectional controller is diode or binistor.
4. battery cutting unit according to claim 2, is characterized in that, described battery cutting unit also comprises the main contact that is electrically connected on the heating of second between the positive pole of described battery high voltage interface and the positive pole of described heating high-pressure interface contactless switch.
5. according to the battery cutting unit described in any one in claim 1 to 4, it is characterized in that, between the negative pole of described battery high voltage interface and the negative pole of every other high voltage interface, be electrically connected with current sensor.
6. according to the battery cutting unit described in any one in claim 1 to 4, it is characterized in that, described battery cutting unit is also provided with the state detection interfaces for connecting one to one with the secondary contact of all contactless switchs.
7. according to the battery cutting unit described in any one in claim 1 to 4, it is characterized in that, all high voltage interfaces are the high-tension connector with high-voltage interlocking loop.
8. according to the battery cutting unit described in any one in claim 1 to 4, it is characterized in that, the main contact of described prediction contactless switch and described current-limiting resistance and the second diode series connection are between the positive pole of described battery high voltage interface and the positive pole of described power bus high voltage interface, the main contact of described anodal main contactor and the 3rd diode series connection, between the positive pole of described battery high voltage interface and the positive pole of power bus high voltage interface, are charged to power brick through power bus high voltage interface with restricting vehicle electrical generator.
CN201420065318.3U 2014-02-13 2014-02-13 Battery cut-off unit of power battery pack Expired - Fee Related CN203713584U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420065318.3U CN203713584U (en) 2014-02-13 2014-02-13 Battery cut-off unit of power battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420065318.3U CN203713584U (en) 2014-02-13 2014-02-13 Battery cut-off unit of power battery pack

Publications (1)

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CN203713584U true CN203713584U (en) 2014-07-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107069610A (en) * 2017-01-23 2017-08-18 深圳市品川能源电气有限公司 A kind of high-tension distribution box for electric vehicle
CN107887536A (en) * 2016-09-30 2018-04-06 长城汽车股份有限公司 Battery bag

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107887536A (en) * 2016-09-30 2018-04-06 长城汽车股份有限公司 Battery bag
CN107887536B (en) * 2016-09-30 2021-08-20 蜂巢能源科技有限公司 Battery pack
CN107069610A (en) * 2017-01-23 2017-08-18 深圳市品川能源电气有限公司 A kind of high-tension distribution box for electric vehicle

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Address after: Hefei City, Anhui Province, 230022 East Road No. 176

Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd

Address before: Hefei City, Anhui Province, 230022 East Road No. 176

Patentee before: Anhui Jianghuai Automobile Co., Ltd.

Address after: Hefei City, Anhui Province, 230022 East Road No. 176

Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd

Address before: Hefei City, Anhui Province, 230022 East Road No. 176

Patentee before: Anhui Jianghuai Automobile Co., Ltd.

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: 20140716

Termination date: 20190213