CN113619392B - Low-voltage power supply circuit of electric racing car - Google Patents
Low-voltage power supply circuit of electric racing car Download PDFInfo
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- CN113619392B CN113619392B CN202110986945.5A CN202110986945A CN113619392B CN 113619392 B CN113619392 B CN 113619392B CN 202110986945 A CN202110986945 A CN 202110986945A CN 113619392 B CN113619392 B CN 113619392B
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- voltage battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to the technical field of automobile power supply, in particular to a low-voltage power supply circuit of an electric racing car. Specifically, after the key switch is turned off or the emergency switch is pressed down, the positive line of the low-voltage power supply outside the low-voltage battery pack is not electrified, and the danger of short circuit caused by connection with the negative pole of the low-voltage power supply cannot occur. Especially, under the condition that the electric racing car is collided, turned on one's side and the like, the low-voltage power supply positive wire and the low-voltage power supply negative wire outside the low-voltage battery pack are in short circuit, and because the low-voltage power supply positive wire is disconnected inside the battery pack, the low-voltage power supply wire outside the low-voltage battery pack cannot be connected with the low-voltage power supply positive electrode, the dangerous condition of power supply short circuit cannot occur, and the condition that a power supply or a circuit is damaged to cause a fire disaster is avoided.
Description
Technical Field
The invention relates to the technical field of automobile power supply, in particular to a low-voltage power supply circuit of an electric racing car.
Background
Along with the continuous development of industrialization of various countries, the consumption of non-renewable energy sources is also intensified, and under the condition that the non-renewable energy sources are increasingly tense, various countries are in vigorous development of new energy vehicles so as to relieve the dependence on the non-renewable energy sources.
Electric vehicles are increasingly popular as low-consumption, energy-saving and zero-emission vehicles. The rapid development of electric vehicles has led to the participation of more and more automobile manufacturers and scientific research institutions in electric racing car competitions. The electric racing car is used as a racing car, and the requirements of the whole car and parts on a low-voltage power supply are much higher than those of a common electric car.
Due to the danger of racing electric racing cars, an emergency switch must be designed for disconnecting the low-voltage power supply in case of emergency. After a starting key of the racing car is turned off or an emergency switch is pressed down, a positive line of a low-voltage power supply outside a low-voltage battery pack connected with a positive electrode of the low-voltage power supply still has electricity, namely, a part of the low-voltage power supply is still communicated with the positive electrode of the battery pack, so that the part of the low-voltage power supply still can be in short circuit with a negative line of the low-voltage power supply to cause short circuit of the low-voltage battery.
Therefore, a low-voltage power supply circuit capable of isolating a low-voltage power supply inside a low-voltage battery pack needs to be designed, namely after a key switch is turned off or an emergency switch is pressed down, all power lines outside the low-voltage battery pack cannot be electrified any more, so that the power lines and the positive electrode of the low-voltage power supply are in a disconnected state.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the invention provides a low-voltage power supply circuit of an electric racing car, which comprises a low-voltage battery pack, an instantaneous switch, an emergency switch, a key switch, a high-voltage battery pack, a power supply DC/DC converter and a one-way conduction circuit, wherein the instantaneous switch is connected with the emergency switch; a low-voltage battery, a battery fuse and a low-voltage battery relay are arranged in the low-voltage battery pack; a high-voltage battery, a positive relay, a battery management system and a negative relay are arranged in the high-voltage battery pack; the positive electrode of the low-voltage battery is connected with the battery fuse; the instantaneous switch is connected with the low-voltage battery relay in parallel; the whole vehicle low-voltage fuse, the emergency switch and the key switch are sequentially connected to an output line of the low-voltage battery; the positive electrode of the high-voltage battery is connected with the positive electrode relay; the negative electrode of the high-voltage battery is connected with the negative electrode relay; the battery management system controls the direct current output of the high-voltage battery; the high-voltage battery outputs low voltage electricity through the power supply DC/DC converter; the low-voltage electricity is connected between the low-voltage battery and the whole vehicle low-voltage fuse; the unidirectional conducting circuit can convey the low voltage electricity.
Further, the momentary switch is a self-restoring switch; the momentary switch is fixed on the outer wall of the low-voltage battery pack.
Further, the low-voltage battery relay comprises two signal control lines; one of the signal control lines is connected with the anode of the key switch; and the other signal control line is connected with the negative electrode of the low-voltage battery.
Further, the emergency switch is connected in series with the key switch; the emergency switch controls the positive electrode of the low-voltage battery; the emergency switch is a normally closed switch; the key switch controls the negative pole of the low-voltage battery; the key switch is a normally open switch with self-locking.
Further, the emergency switch and the key switch can control the low-voltage battery pack and the high-voltage battery pack to be connected or disconnected.
Further, the emergency switch and the key switch form a dual-channel joint control switch.
Further, the unidirectional conducting circuit comprises two unidirectional diodes with opposite setting directions; the power source DC/DC converter may supply power to the low-voltage battery through the unidirectional diode.
The invention has the advantages or beneficial effects that:
the invention provides a low-voltage power supply circuit of an electric racing car, which thoroughly isolates a low-voltage power supply in a low-voltage battery pack. Specifically, after the key switch is turned off or the emergency switch is pressed down, the positive line of the low-voltage power supply outside the low-voltage battery pack is not electrified, and the danger of short circuit caused by connection with the negative pole of the low-voltage power supply cannot occur. Especially, under the condition that the electric racing car is collided, turned on one's side and the like, the low-voltage power supply positive wire and the low-voltage power supply negative wire outside the low-voltage battery pack are in short circuit, and because the low-voltage power supply positive wire is disconnected inside the battery pack, the low-voltage power supply wire outside the low-voltage battery pack cannot be connected with the low-voltage power supply positive electrode, the dangerous condition of power supply short circuit cannot occur, and the condition that a power supply or a circuit is damaged to cause a fire disaster is avoided.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a circuit diagram of a low-voltage power supply circuit of an electric racing car according to embodiment 1 of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
For example, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, as the terms refer to orientations or positional relationships illustrated in the accompanying drawings, are intended to facilitate description of the invention and to simplify description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
The terms "first," "second," and "third," if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention are described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, belong to the protection scope of the invention.
Example 1
Due to the danger of racing electric cars, an emergency switch must be designed to disconnect the low voltage power supply in case of emergency. After a starting key of the racing car is turned off or an emergency switch is pressed down, a low-voltage power supply positive line outside a low-voltage battery pack connected with a low-voltage power supply positive electrode still has electricity, namely, a part of low-voltage power supply line is still communicated with the battery pack positive electrode, so that the part of low-voltage power supply line still can be in short circuit with a low-voltage power supply negative electrode line to cause short circuit of the low-voltage battery.
In view of the above technical problem, the present invention provides a low voltage power supply circuit for electric racing car, as shown in fig. 1, including a low voltage battery pack 14, a momentary switch 3, an emergency switch 6, a key switch 7, a high voltage battery pack 15, a power DC/DC converter 12 and a one-way conduction circuit 13; the low-voltage battery pack 14 is internally provided with a low-voltage battery 1, a battery fuse 2 and a low-voltage battery relay 4; the high-voltage battery pack 15 is internally provided with a high-voltage battery 8, a positive relay 9, a battery management system 10 and a negative relay 11; the positive electrode of the low-voltage battery 1 is connected with the battery fuse 2; the instantaneous switch 3 is connected with the low-voltage battery relay 4 in parallel; the whole vehicle low-voltage fuse 5, the emergency switch 6 and the key switch 7 are sequentially connected to an output line of the low-voltage battery 1; the positive electrode of the high-voltage battery 8 is connected with a positive electrode relay 9; the negative pole of the high-voltage battery 8 is connected with a negative pole relay 11; the battery management system 10 controls the dc output of the high-voltage battery 8; the high-voltage battery 8 outputs low-voltage electricity through a power supply DC/DC converter 12; the low-voltage electricity is connected between the low-voltage battery 1 and the low-voltage fuse 5 of the whole vehicle; the unidirectional conducting circuit 13 can deliver low voltage electricity.
The principle of the low-voltage power supply circuit of the electric racing car provided by the embodiment 1 is as follows:
the method comprises the steps that the positive pole of a low-voltage battery 1 is taken as a starting point, the positive pole of the low-voltage battery 1 firstly passes through a battery fuse 2, an instantaneous switch 3 and a low-voltage battery relay 4 are connected in parallel and then are connected in series behind the battery fuse 2, then the positive pole of the power DC/DC converter 12, the low-voltage fuse 5 of the whole vehicle, an emergency switch 6, a key switch 7, the positive pole signal line of the low-voltage battery relay 4 and the positive pole power line of a battery management system 10 are connected to the positive pole of each low-voltage electric appliance, and finally the negative pole of each electric appliance, the negative pole power line of the battery management system 10, the emergency switch 6, the key switch 7, the output negative pole of the power DC/DC converter 12 and the negative pole signal line of the low-voltage battery relay 4 are sequentially passed through and returned to the negative pole of the low-voltage power supply.
The high-voltage circuit related to the low-voltage circuit takes the positive pole of the high-voltage battery 8 as a starting point, and firstly passes through the positive pole relay 9 of the high-voltage battery 8, the output positive pole of the power DC/DC converter 12 and the diode positive pole of the one-way conduction circuit 13 to reach the middle of the instantaneous switch 3 on the positive pole of the low-voltage battery 1 and the low-voltage fuse 5 of the whole vehicle. Starting from the negative pole of the high-voltage battery 8, the negative pole of the high-voltage battery 8 passes through the negative pole relay 11 of the high-voltage battery 8, the input negative pole of the power supply DC/DC converter 12, the diode negative pole of the one-way conduction circuit 13, and finally reaches the middle of the low-voltage battery relay 4 and the emergency switch 6 on the negative pole line of the low-voltage battery 1.
Embodiment 1 of the present invention provides a low-voltage power supply circuit for an electric racing car, which thoroughly isolates a low-voltage power supply from the low-voltage power supply circuit inside a low-voltage battery pack 14 by the arrangement of the low-voltage battery pack 14. Specifically, after the key switch 7 is turned off or the emergency switch 6 is pressed, the whole power supply circuit is in an off state, the positive line of the low-voltage power supply outside the low-voltage battery pack 14 is not electrified, and the dangerous situation of short circuit caused by connection with the negative electrode of the low-voltage power supply cannot occur. Particularly, under the conditions of collision, rollover and the like of the electric racing car, the positive line and the negative line of the low-voltage power supply outside the low-voltage battery pack 14 are in short circuit, and the positive line of the low-voltage power supply is disconnected inside the battery pack, so that the low-voltage power line outside the low-voltage battery pack 14 cannot be connected with the positive electrode of the low-voltage power supply, the dangerous condition of short circuit of the power supply cannot occur, and the condition that the power supply or a circuit is damaged to cause fire is avoided.
Preferably, this embodiment 1 provides a low-voltage power supply circuit for electric racing cars, and the momentary switch 3 is a self-recovery switch; the momentary switch 3 is fixed to the outer wall of the low-voltage battery pack 14. In this embodiment 1, when starting the racing car, close momentary switch 3 earlier, twist key switch 7, make low-voltage battery 1 can be used for whole car low pressure power supply, and battery management system 10 circular telegram, after the self-checking is normal, open high-voltage battery 8's positive relay 9 and negative pole relay 11, power DC/DC converter 12 work, supply low-voltage electricity, low-voltage battery relay 4 circular telegram makes low-voltage switch closed this moment, can loosen momentary switch 3, make it automatic disconnection, whole car low pressure electricity circular telegram is accomplished. Therefore, the self-recovery switch is arranged only by pressing the instantaneous quick switch when the racing car is started and releasing the instantaneous switch 3 when the racing car is started.
Preferably, this embodiment 1 provides a low-voltage power supply circuit for electric racing cars, and the low-voltage battery relay 4 includes two signal control lines; one of the signal control lines is connected with the anode of the key switch 7; the other signal control line is connected with the negative electrode of the low-voltage battery 1. The relay is an automatic switch element with an isolation function and has a function of realizing on and off control on a controlled circuit, and the key switch 7 realizes the on and off of the circuit through the low-voltage battery relay 4.
Preferably, the embodiment 1 provides a low-voltage power supply circuit of the electric racing car, and the emergency switch 6 is connected with the key switch 7 in series; the emergency switch 6 controls the positive electrode of the low-voltage battery 1; the emergency switch 6 is a normally closed switch; the key switch 7 controls the negative pole of the low-voltage battery 1; the key switch 7 is a self-locking normally open switch; the emergency switch 6 and the key switch 7 can control the low-voltage battery pack 14 and the high-voltage battery pack 15 to be connected or disconnected. In the present embodiment 1, the emergency switch 6 is in a closed state in a normal situation, and is in an open state when the circuit is energized; the key switch 7 is normally in an open state, and is in a closed state when the circuit is electrified; when the vehicle is stopped and the power is off, the key switch 7 is turned to be switched off, the battery management system 10 is switched off, the positive relay 9 and the negative relay 11 of the high-voltage battery 8 are switched off, no high-voltage electricity is output, the power DC/DC converter stops working and no low-voltage electricity is output, the low-voltage battery relay 4 is switched off, the low-voltage battery 1 does not have low-voltage electricity output, and wires outside the low-voltage battery pack 14 and the high-voltage battery pack 15 are not electrified; when an emergency occurs, the emergency switch 6 is pressed down to be disconnected, and the circuit is in a power-off state.
Preferably, the embodiment 1 provides a low-voltage power supply circuit of the electric racing car, and the emergency switch 6 and the key switch 7 form a dual-channel joint control switch. In the embodiment 1, the two circuits of the emergency switch 6 and the key switch 7 ensure that when the state of any one switch is changed, the intermediate connected electric appliance and the power supply can be switched between the open/closed state.
The unidirectional conducting circuit 13 comprises two unidirectional diodes with opposite arrangement directions; the power supply DC/DC converter 12 may supply power to the low-voltage battery 1 through a one-way diode. When the low-voltage electricity of the racing car normally works, the power supply DC/DC converter 12 can only supply power to the low-voltage battery 1 and the whole car low-voltage circuit in one direction.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A low-voltage power supply circuit of an electric racing car is characterized by comprising a low-voltage battery pack, an instantaneous switch, an emergency switch, a key switch, a high-voltage battery pack, a power DC/DC converter and a one-way conduction circuit;
a low-voltage battery, a battery fuse and a low-voltage battery relay are arranged in the low-voltage battery pack;
a high-voltage battery, a positive relay, a battery management system and a negative relay are arranged in the high-voltage battery pack;
the positive electrode of the low-voltage battery is connected with the battery fuse; the instantaneous switch is connected with the low-voltage battery relay in parallel; the whole vehicle low-voltage fuse, the emergency switch and the key switch are sequentially connected to an output line of the low-voltage battery; the positive electrode of the high-voltage battery is connected with the positive electrode relay; the negative electrode of the high-voltage battery is connected with the negative electrode relay; the battery management system controls the direct current output of the high-voltage battery; the high-voltage battery outputs low voltage electricity through the power supply DC/DC converter; the low-voltage electricity is connected between the low-voltage battery and a low-voltage fuse of the whole vehicle; the unidirectional conducting circuit can convey the low-voltage electricity; the momentary switch is a self-restoring switch; the momentary switch is fixed on the outer wall of the low-voltage battery pack.
2. The low voltage power supply circuit for electric racing vehicles according to claim 1, wherein said low voltage battery relay comprises two signal control lines; one of the signal control lines is connected with the anode of the key switch; and the other signal control line is connected with the negative electrode of the low-voltage battery.
3. The low voltage supply circuit for electric racing vehicles according to claim 1, wherein said emergency switch is connected in series with said key switch; the emergency switch controls the positive electrode of the low-voltage battery; the emergency switch is a normally closed switch; the key switch controls the negative pole of the low-voltage battery; the key switch is a normally open switch with self-locking.
4. The low voltage power supply circuit for electric racing car as claimed in claim 3, wherein said emergency switch and said key switch are both capable of controlling said low voltage battery pack and said high voltage battery pack to be connected or disconnected.
5. The low voltage power supply circuit for electric racing cars of claim 4, wherein said emergency switch and said key switch constitute a dual channel gang control switch.
6. The low-voltage power supply circuit for electric racing cars of claim 1, wherein said unidirectional conduction circuit comprises two unidirectional diodes arranged in opposite directions; the power source DC/DC converter may supply power to the low-voltage battery through the unidirectional diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110986945.5A CN113619392B (en) | 2021-08-26 | 2021-08-26 | Low-voltage power supply circuit of electric racing car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110986945.5A CN113619392B (en) | 2021-08-26 | 2021-08-26 | Low-voltage power supply circuit of electric racing car |
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| CN113619392A CN113619392A (en) | 2021-11-09 |
| CN113619392B true CN113619392B (en) | 2022-12-20 |
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| CN106671814A (en) * | 2016-12-29 | 2017-05-17 | 力帆实业(集团)股份有限公司 | Active safety protection system for power battery pack of electric automobile |
| CN109649174A (en) * | 2018-12-05 | 2019-04-19 | 江苏敏安电动汽车有限公司 | Initiative Defence System under electric car emergency braking |
| CN109808547A (en) * | 2019-04-04 | 2019-05-28 | 安徽卓越电气有限公司 | A kind of low-power consumption power accumulator igniting electrifying control circuit and control method |
| CN110481327A (en) * | 2019-09-01 | 2019-11-22 | 深圳市雄韬锂电有限公司 | A kind of collision power down protection system |
| CN112572231A (en) * | 2020-12-08 | 2021-03-30 | 奇瑞商用车（安徽）有限公司 | Electric vehicle storage battery negative pole loop breaking structure and use method thereof |
| JP2021111474A (en) * | 2019-12-20 | 2021-08-02 | 國家中山科學研究院 | Battery external short circuit test device |
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2021
- 2021-08-26 CN CN202110986945.5A patent/CN113619392B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671814A (en) * | 2016-12-29 | 2017-05-17 | 力帆实业(集团)股份有限公司 | Active safety protection system for power battery pack of electric automobile |
| CN109649174A (en) * | 2018-12-05 | 2019-04-19 | 江苏敏安电动汽车有限公司 | Initiative Defence System under electric car emergency braking |
| CN109808547A (en) * | 2019-04-04 | 2019-05-28 | 安徽卓越电气有限公司 | A kind of low-power consumption power accumulator igniting electrifying control circuit and control method |
| CN110481327A (en) * | 2019-09-01 | 2019-11-22 | 深圳市雄韬锂电有限公司 | A kind of collision power down protection system |
| JP2021111474A (en) * | 2019-12-20 | 2021-08-02 | 國家中山科學研究院 | Battery external short circuit test device |
| CN112572231A (en) * | 2020-12-08 | 2021-03-30 | 奇瑞商用车（安徽）有限公司 | Electric vehicle storage battery negative pole loop breaking structure and use method thereof |
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| CN113619392A (en) | 2021-11-09 |
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