CN205292321U - Hot unstability monitoring devices of group battery and electric automobile - Google Patents

Hot unstability monitoring devices of group battery and electric automobile Download PDF

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Publication number
CN205292321U
CN205292321U CN201620082747.0U CN201620082747U CN205292321U CN 205292321 U CN205292321 U CN 205292321U CN 201620082747 U CN201620082747 U CN 201620082747U CN 205292321 U CN205292321 U CN 205292321U
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China
Prior art keywords
battery
voltage
entire car
car controller
battery cell
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Active
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CN201620082747.0U
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Inventor
陈正金
劳力
王扬
周鹏
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Sinoev Hefei Technologies Co Ltd
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Sinoev Hefei Technologies Co Ltd
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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 relates to a battery monitoring technology field particularly, relates to a hot unstability monitoring devices of group battery and electric automobile. The group battery hot unstability monitoring devices include: the battery voltage of electricity connection detects chip, calculator, comparator, vehicle control unit in proper order, battery voltage detects the chip and is used for the every to predetermine the free voltage of collecting time battery, the calculator is used for calculating pressure differential numerical value according to the free voltage of gathering of battery, the comparator be used for with pressure differential numerical value is compared with predetermined threshold value, if pressure differential numerical value surpasss this predetermined threshold value, then to the vehicle control unit output trouble signal of telecommunication, vehicle control unit was receiving cut off battery circuit behind the trouble signal of telecommunication. The device detects the chip through battery voltage and acquires the free voltage of battery, and what battery voltage detected that the chip can be more accurate detects the free voltage of battery, and it is higher to detect the precision, also can more accurately monitor battery voltage, reduces the probability that detects the error.

Description

The hot instability monitoring device of series of cells and electromobile
Technical field
The utility model relates to battery detection technical field, specifically, it relates to a kind of hot instability monitoring device of series of cells and electromobile.
Background technology
Due to lithium ion battery have environmental pollution little, without noise, energy advantages of higher, be therefore widely used on new-energy automobile, the power source as new-energy automobile uses. This kind of power source be generally by battery cell less for multiple capacity via series and parallel, be combined as the series of cells of a Large Copacity. Although lithium ion battery is memory-less effect in charge and discharge cycles, but owing to lithium ion battery is very strict to the requirement of discharge and recharge, in discharge process, the mistake of low voltage is put or self-discharge reaction can cause lithium ion active substance to decompose destruction, and not necessarily can reduce; And in process of charging, any type of the overcharging of lithium ion battery all can cause battery performance to be subject to havoc, even explode. Therefore, when battery cell is combined as series of cells, time battery cell is carried out strict selecting, the capacity of the battery cell of composition series of cells is consistent, and voltage pressure reduction is within 10mV, and in the process of series of cells use, it is also desirable to the charge and discharge process of battery cell is carried out monitor in real time, it is ensured that the overall performance of series of cells and safety performance.
Method series of cells monitored at present is generally add reometer or voltmeter in discharging circuit or charging circuit, obtains the particular case in battery power discharge or process of charging by reometer or voltmeter. But reometer or voltmeter can not realize the monitoring to series of cells accurately, and the probability made a fault is bigger.
Practical novel content
In view of this, the object of the utility model embodiment is to provide a kind of hot instability monitoring device of series of cells and electromobile, it is possible to realizes series of cells being monitored more accurately, reduces the probability of failure of monitoring.
First aspect, the utility model embodiment provides a kind of hot instability monitoring device of series of cells, comprising: the battery voltage detection chip that is electrically connected successively, counter, comparer, entire car controller;
Described battery voltage detection chip is used for the voltage every collection of default time battery cell;
Described counter is used for the voltage according to the battery cell gathered and calculates pressure drop;
Described comparer is used for comparing described pressure drop and the threshold value preset, if described pressure drop exceeds the threshold value that this is preset, then exports fault electrical signal to entire car controller;
Described entire car controller cuts off battery circuit after receiving described fault electrical signal.
In conjunction with first aspect, the utility model embodiment provides the first possible enforcement mode of first aspect, wherein:
Described battery voltage detection chip is also connected with storer.
In conjunction with first aspect, the utility model embodiment provides the 2nd kind of possible enforcement mode of first aspect, wherein:
Also comprise: battery cell; Described battery voltage detection chip is connected with described battery cell.
In conjunction with first aspect, the utility model embodiment provides the third possible enforcement mode of first aspect, wherein:
Described battery circuit comprises: charger, electric machine control device and the battery charger controller being connected with charger;
Described charger is connected with described battery cell by high-voltage power-line respectively with described electric machine control device;
Described entire car controller, after receiving described fault electrical signal, sends cut-out electrical signal respectively to described battery charger controller and described electric machine control device;
The high-voltage power-line that described battery charger controller cuts off between charger and battery cell after receiving described cut-out electrical signal;
And the high-voltage power-line that described electric machine control device cuts off between itself and battery cell after receiving described cut-out signal.
In conjunction with first aspect, the utility model embodiment provides the 4th kind of possible enforcement mode of first aspect, wherein:
Also comprise and the instrument that described entire car controller is connected;
Described instrument is used for issuing out warning signal in the control of described entire car controller.
In conjunction with first aspect, the utility model embodiment provides the 5th kind of possible enforcement mode of first aspect, wherein:
Described entire car controller is also connected with automobile control device;
Described automobile control device comprises: gearshift mechanism, accelerator pedal, brake pedal, MP5, abs controller.
In conjunction with first aspect, the utility model embodiment provides the 6th kind of possible enforcement mode of first aspect, wherein:
Described entire car controller is also connected with long-distance intelligent terminal.
In conjunction with first aspect, the utility model embodiment provides the 7th kind of possible enforcement mode of first aspect, wherein:
Described entire car controller is also connected with warning lamp and hummer.
In conjunction with first aspect, the utility model embodiment provides the 8th kind of possible enforcement mode of first aspect, wherein:
Described entire car controller, described battery voltage detection chip are connected by CAN.
Second aspect, the utility model embodiment also provides a kind of electromobile, comprising: automobile body, described automobile body is provided with the monitoring device of the hot unstability of the series of cells described in above-mentioned first aspect.
The hot instability monitoring device of the series of cells that the utility model embodiment provides and electromobile, the voltage of battery cell is obtained by battery voltage detection chip, then pressure drop is calculated by counter according to the voltage of battery cell, by comparer, pressure drop and the threshold value preset are compared afterwards, if pressure drop exceeds this threshold value preset, then producing fault electrical signal to export to entire car controller, entire car controller cuts off battery cell circuit after receiving fault electrical signal. In this process, the voltage of battery cell can be detected by battery voltage detection chip more accurately, and accuracy of detection is higher, it is also possible to monitored by cell voltage more accurately, reduces the probability of detection error.
For making above-mentioned purpose of the present utility model, feature and advantage become apparent, better embodiment cited below particularly, and coordinate appended accompanying drawing, it is described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, it is briefly described to the accompanying drawing used required in embodiment below, it is to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore should not be counted as is the restriction to scope, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
Fig. 1 shows the structural representation of the hot instability monitoring device of a kind of series of cells that the utility model embodiment provides;
Fig. 2 shows the structural representation of the hot instability monitoring device of another kind of series of cells that the utility model embodiment provides;
Fig. 3 shows the hot instability monitoring device of series of cells that the utility model embodiment provides at the schema carrying out work when series of cells being monitored;
Fig. 4 shows the structural representation of the hot instability monitoring device of another kind of series of cells that the utility model embodiment provides.
Embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described embodiment is only the utility model part embodiment, instead of whole embodiments. The assembly of the utility model embodiment usually describing in accompanying drawing herein and illustrating can be arranged with various different configuration and design. Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but only represent selected embodiment of the present utility model. Based on embodiment of the present utility model, other embodiments all that those skilled in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
Current lithium ion battery is widely used on new-energy automobile, and due to lithium ion battery memory-less effect in charge and discharge cycles, when electric discharge, the mistake of low voltage is put or self-discharge reaction can cause lithium ion active substance to decompose destruction, and decompose destruction lithium ion battery can be caused irreversible infringement, and in process of charging China, lithium ion battery is any type of to be overcharged and battery performance all can be caused to be damaged even explode. Therefore, after lithium-ion battery monomer is combined into series of cells, when being applied on new-energy automobile, needing the working order to lithium ion battery to monitor, current monitoring method cannot realize the accurate measurements to series of cells accurately, and the probability made a fault is bigger, based on this, the hot unstability detection device of a kind of series of cells that the application provides and automobile, it is possible to realize series of cells working order being detected more accurately, reduce the probability of monitoring error.
For ease of being understood by the present embodiment, first the hot instability monitoring device of a kind of series of cells disclosed in the utility model embodiment is carried out detail,
It should be noted that, in description of the present utility model, it is based on orientation shown in the drawings or position relation that the orientation of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " or position are closed; be only the utility model and simplified characterization for convenience of description; instead of the device that refers to of instruction or hint or element must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model. In addition, term " first ", " the 2nd ", " the 3rd " are only for describing object, and can not be interpreted as instruction or hint relative importance.
In addition, in description of the present utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, it is possible to be fixedly connected with, it is also possible to be removably connect, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection; Can be directly be connected, it is also possible to be indirectly connected by intermediary, it is possible to be the connection of two element internals. For the ordinary skill in the art, it is possible to particular case understands the concrete implication of above-mentioned term in the utility model.
Shown in Figure 1, the hot instability monitoring device of the series of cells that the utility model embodiment provides comprises: the battery voltage detection chip that is electrically connected successively, counter, comparer, entire car controller;
Described battery voltage detection chip is used for the voltage every collection of default time battery cell;
Described counter is used for the voltage according to the battery cell gathered and calculates pressure drop;
Described comparer is used for comparing described pressure drop and the threshold value preset, if described pressure drop exceeds the threshold value that this is preset, then exports fault electrical signal to entire car controller;
Described entire car controller cuts off battery cell circuit after receiving described fault electrical signal.
When specific implementation, battery voltage detection chip can adopt MAX17830 chip. This chip generally comprises 12 tunnel voltage detecting passages, No. 12 equalizing circuit control pin and 2 road NTC temperature sensors. The utility model can adopt voltage detecting passage different battery cells carries out the detection of voltage respectively, be connected by CAN with between entire car controller, and by the communication between CAN communication protocol realization and entire car controller. In addition, battery voltage detection chip can also adopt other chip, such as LN61F series chip, LN809 series chip etc., belong to battery voltage detection chip described in the utility model as long as can all should be worked as by the chip that the voltage of battery cell detects.
Battery voltage detection chip every the voltage of acquisition of default time primary cell monomer, then, can calculate pressure drop by counter according to the voltage of the battery cell collected. Such as, cell voltage chip (can also be other default time every 1 second, such as 0.5 second, 0.8 second, 1.1 seconds etc., specifically can arrange according to actual needs) gather primary cell monomer voltage, then using the voltage of battery cell this time obtained and the magnitude of voltage of the rear battery cell obtained for 1 second to subtract each other, the result obtained is pressure drop. The pressure drop calculated is inputed to comparer by counter. This pressure drop and default threshold value are compared by comparer, if pressure drop does not exceed this threshold value preset, so just think the working properly of battery cell, if and pressure drop is beyond this default threshold value, then think that unusual condition has occurred in the work of battery cell, export fault electrical signal to entire car controller. Entire car controller, after receiving this fault electrical signal, cuts off battery circuit.
The hot unstability detection device of the series of cells that the utility model embodiment provides, the voltage of battery cell is obtained by battery voltage detection chip, then pressure drop is calculated by counter according to the voltage of battery cell, by comparer, pressure drop and the threshold value preset are compared afterwards, if pressure drop exceeds this threshold value preset, then producing fault electrical signal to export to entire car controller, entire car controller cuts off battery cell circuit after receiving fault electrical signal. In this process, the voltage of battery cell can be detected by battery voltage detection chip more accurately, and accuracy of detection is higher, it is also possible to monitored by cell voltage more accurately, reduces the probability of detection error.
Preferably, in the above-described embodiments, counter and comparer can all be integrated in battery voltage detection chip or entire car controller.
In addition, it is noted that battery voltage detection chip detection is the voltage of battery cell, series of cells includes how many battery cells, just can obtain the magnitude of voltage of same quantity when obtaining the voltage of battery cell every time. As long as and have one of them battery cell that operation irregularity occurs, just think that the work of series of cells occurs abnormal.
The threshold value preset can carry out concrete setting according to the actual needs, such as, can default threshold value be set to: (2 times of 400+ electric current (A is doubly) numerical value) mV (millivolt). Electric current is quiescent current; When quiescent current is zero, default threshold value is: (400+0*2)=400mV.
Shown in Fig. 2 and Fig. 3, the utility model embodiment also provides another kind of hot instability monitoring device of series of cells, on the basis of above-described embodiment, also comprises storer; Described storer is used for the voltage of the battery cell that storage battery voltage checking chip gathers.
When specific implementation, its working order can be described as:
1., battery voltage detection chip first time obtain battery cell voltage U 1, the voltage U 1 of the battery cell of acquisition is stored by storer;
2., battery voltage detection chip second time after the default time obtains the voltage U 2 of battery;
The voltage U 2 input value counter simultaneously of the battery cell that the voltage U 1 of the battery cell obtained 3., for the first time and second time obtain, counter calculates for U1 and U2, acquisition pressure drop Ua; I.e. Ua=U2-U1;
4., pressure drop Ua and default threshold value �� U is compared by comparer;
If 5. pressure drop Ua is less than default threshold value �� U, then the magnitude of voltage of the battery cell more stored in new memory, is saved in memory even the voltage U 2 that second time obtains battery replaces U1;
6., battery voltage detection chip third time the voltage U 3 of battery cell that obtains, then calculated for U3 and U2 by counter, obtain pressure drop Ub, repeat above-mentioned comparison process 4., 5. with Ub;
If 7. pressure drop Ua is greater than default threshold value �� U, then the voltage U 1 of the battery cell stored in storer is not upgraded, the voltage U 3 of the battery cell that continuation third time obtains and U1 calculate, and namely obtain pressure drop Ub ', i.e. Ub '=U3-U1; Meanwhile, level fault electrical signal is exported to entire car controller;
If 8. pressure drop Ub ' is still greater than default threshold value �� U, so just thinks that the work of battery cell occurs abnormal, export two grades of fault electrical signal to entire car controller;
If 9. pressure drop Ub ' is less than default threshold value �� U, then think that the work of battery cell is in normally, the voltage of the battery cell of storer store is upgraded, obtains the voltage U 4 of battery cell for the 4th time by battery voltage detection chip, it may also be useful to U4 and �� U repeats comparison process.
It is noted that in said process, the situation that pressure drop is greater than default threshold value has occurred just sending fault electrical signal twice continuously. Specifically, when implementing, it is also possible to the number of times that pressure drop is greater than default threshold value is set to more, specifically can specifically arrange according to actual needs. The output of fault electrical signal can export in classification, such as in the above-described embodiments, when the situation that voltage value is greater than default threshold value occurs once time, sends level fault electrical signal. And when the situation that voltage value is greater than default threshold value occurs twice time, send two grades of fault electrical signal, it is also possible to the output of fault electrical signal classified according to other rule.
In addition, time data carry out storing in memory, it is carry out storing with data in standard frame.
Shown in Figure 4, the utility model embodiment also provides in the hot unstability detection device of a kind of series of cells, the concrete structure of battery circuit. The battery circuit that the utility model embodiment provides comprises: described battery circuit comprises: charger, electric machine control device and the battery charger controller being connected with charger;
Described charger is connected with described battery cell by high-voltage power-line respectively with described electric machine control device;
Described entire car controller, after receiving described fault electrical signal, sends cut-out electrical signal respectively to described battery charger controller and described electric machine control device;
The high-voltage power-line that described battery charger controller cuts off between charger and battery cell after receiving described cut-out electrical signal;
And the high-voltage power-line that described electric machine control device cuts off between itself and battery cell after receiving described cut-out signal.
When specific implementation, charger is for charging to series of cells. Battery charger controller is for controlling the work of charger. The volts DS that series of cells is exported by electric machine control device is converted to three alternating-current, and exports to the motor for driving electromobile driving wheel to rotate by three supply leads. Electric machine control device (PCU), after receiving the cut-out electrical signal of entire car controller, cuts off the connection between itself and series of cells. Battery charger controller, after receiving cut-out electrical signal, cuts off the connection between charger and power brick.
It is noted that series of cells at one time in, charging state or discharge condition can only two select its one. When charging electric vehicle, entire car controller sends the electrical signal entering charging state to charge control module. Now, charging controller and charger are all in running order, only charging controller and charger all in running order under, entire car controller just can send cut-out electrical signal to charging controller. Same, when electromobile needs to open, entire car controller can send, to battery group, electric machine control device, the electrical signal entering startup state, now, series of cells and electric machine control device are in running order, time only series of cells and electric machine control device are in running order, entire car controller just can send to electric machine control device and cut off electrical signal.
In addition, it is noted that also install battery manager in series of cells, entire car controller can also send directly to battery manager and cut off electrical signal, and battery manager cuts off the connection of series of cells and other battery circuits.
Shown in Figure 4, in each embodiment of the present utility model, also comprise the instrument being connected with entire car controller. Described instrument is used for issuing out warning signal in the control of described entire car controller.
When specific implementation, when the series of cells (at least one battery cell) of automobile is out of order time, entire car controller cuts off battery circuit after receiving fault electrical signal. Can knowing that in order to make officer battery cell goes wrong, entire car controller also can send display electrical signal to instrument, and instrument is after receiving display electrical signal, and can give the alarm signal. It is noted that entire car controller receives different fault electrical signal, the display electrical signal sent is also different. Such as, when the fault electrical signal that entire car controller receives is level fault electrical signal, warning signal should point out user to carry out vehicle repair and maintenance. When the fault electrical signal that entire car controller receives is two grades of fault electrical signal, warning signal should point out user to flee from accident vehicle, avoids causing personal injury.
In addition, in order to can better officer be pointed out, entire car controller is also connected with warning lamp and hummer. This warning lamp and hummer equally for sending a warning under the control of entire car controller. The alert message that warning lamp sends is light, and the alert message that hummer sends is sound, to make officer learn the failure condition of battery more timely.
In order to provide better service to officer, entire car controller is also connected with long-distance intelligent terminal. This long-distance intelligent terminal can realize the radio communication between upper computer, for officer provides remote service.
Also being connected with 12V lead-acid cell by switch power supply (DCDC) on electric machine control device, electric machine control device is also for charging to lead-acid cell.
Entire car controller is also connected with automobile control device, comprise: gearshift mechanism, accelerator pedal, brake pedal, MP5, ABS (Anti-lockedBrakingSystem, anti-lock braking system) controller, for the control signal by receiving above-mentioned automobile control device, and coordinate the work of series of cells, motor etc.
Wherein, gearshift mechanism is used for sending gear signal to entire car controller, and entire car controller sends the control signal of control series of cells work according to gear signal to series of cells; Accelerator pedal is connected with entire car controller by accelerator pedal aperture signal wire; Brake pedal is connected with entire car controller by brake pedal aperture signal wire; Abs controller and MP5 are all connected with entire car controller by CAN. The abs controller auxiliary braking of Thai. Brake pedal is also connected with stopper, for the rotation of braked drive wheels.
Motor is also connected with the differential mechanism that single-stage speed reducing device is connected with single-stage speed reducing device, and differential mechanism is connected with driving wheel.
The utility model embodiment also provides a kind of electromobile, comprises automobile body, is provided with the hot instability monitoring device of the series of cells as described in above-described embodiment on described automobile body.
Electromobile provided by the utility model, it may also be useful to the hot instability monitoring device of series of cells provided in above-described embodiment, it is possible to make officer know the working order of battery more timely, it is to increase the security of automobile in driving procedure.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; any it is familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model. Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.

Claims (10)

1. the hot instability monitoring device of series of cells, it is characterised in that, comprising: the battery voltage detection chip that is electrically connected successively, counter, comparer, entire car controller;
Described battery voltage detection chip is used for the voltage every collection of default time battery cell;
Described counter is used for the voltage according to the battery cell gathered and calculates pressure drop;
Described comparer is used for comparing described pressure drop and the threshold value preset, if described pressure drop exceeds the threshold value that this is preset, then exports fault electrical signal to entire car controller;
Described entire car controller cuts off battery circuit after receiving described fault electrical signal.
2. device according to claim 1, it is characterised in that, described battery voltage detection chip is also connected with storer.
3. device according to claim 2, it is characterised in that, also comprise: battery cell; Described battery voltage detection chip is connected with described battery cell.
4. device according to claim 3, it is characterised in that, described battery circuit comprises: charger, electric machine control device and the battery charger controller being connected with charger;
Described charger is connected with described battery cell by high-voltage power-line respectively with described electric machine control device;
Described entire car controller, after receiving described fault electrical signal, sends cut-out electrical signal respectively to described battery charger controller and described electric machine control device;
The high-voltage power-line that described battery charger controller cuts off between charger and battery cell after receiving described cut-out electrical signal;
And the high-voltage power-line that described electric machine control device cuts off between itself and battery cell after receiving described cut-out signal.
5. device according to claim 1-4 any one, it is characterised in that, also comprise and the instrument that described entire car controller is connected;
Described instrument is used for issuing out warning signal in the control of described entire car controller.
6. device according to claim 1-4 any one, it is characterised in that, described entire car controller is also connected with automobile control device;
Described automobile control device comprises: gearshift mechanism, accelerator pedal, brake pedal, MP5, abs controller.
7. device according to claim 1-4 any one, it is characterised in that, described entire car controller is also connected with long-distance intelligent terminal.
8. device according to claim 1-4 any one, it is characterised in that, described entire car controller is also connected with warning lamp and hummer.
9. device according to claim 1-4 any one, it is characterised in that, described entire car controller, described battery voltage detection chip are connected by CAN.
10. an electromobile, it is characterised in that, comprising: automobile body, described automobile body is provided with the monitoring device of the hot unstability of the series of cells described in the claims 1-9 any one.
CN201620082747.0U 2016-01-26 2016-01-26 Hot unstability monitoring devices of group battery and electric automobile Active CN205292321U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105620304A (en) * 2016-01-26 2016-06-01 华霆(合肥)动力技术有限公司 Battery pack thermal buckling monitoring device and electric vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105620304A (en) * 2016-01-26 2016-06-01 华霆(合肥)动力技术有限公司 Battery pack thermal buckling monitoring device and electric vehicle
CN105620304B (en) * 2016-01-26 2018-01-02 华霆(合肥)动力技术有限公司 Battery pack thermal run away monitoring device and electric automobile

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Address after: 230601 Anhui Hefei economic and Technological Development Zone, Xin Xin Road, No. 62 power battery factory

Patentee after: Huating (Hefei) Power Technology Co., Ltd.

Address before: 230601 Hefei 26 economic and Technological Development Zone, Anhui.

Patentee before: Huating (Hefei) Power Technology Co., Ltd.

CP02 Change in the address of a patent holder