CN212796538U - Battery safety device of electric vehicle - Google Patents
Battery safety device of electric vehicle Download PDFInfo
- Publication number
- CN212796538U CN212796538U CN202021394009.2U CN202021394009U CN212796538U CN 212796538 U CN212796538 U CN 212796538U CN 202021394009 U CN202021394009 U CN 202021394009U CN 212796538 U CN212796538 U CN 212796538U
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- battery
- management system
- core stack
- battery management
- safety device
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model relates to a battery safety device of an electric vehicle, which comprises a battery and a motor controller, wherein the battery comprises a battery core stack and a battery management system, the battery core stack consists of a plurality of battery cores, the battery management system comprises an arithmetic unit and a battery output switch, and the battery management system is electrically connected with the battery core stack and used for controlling whether the battery output switch can be charged or discharged; the motor controller is electrically connected with the battery and a motor and is used for controlling the action of the motor. At least one protection switch is arranged between the battery core stack and the battery management system, and isolation protection is performed when the battery management system is overhauled or replaced, so that the individual safety of the battery core stack and the battery management system is improved.
Description
Technical Field
The present invention relates to a battery safety device for an electric vehicle, and more particularly to a battery safety device for an electric vehicle, which is suitable for maintaining the safety of the battery.
Background
In the conventional electric vehicles on the market, the power source is generally from a Battery, the Battery provides power to a motor controller and a vehicle load to generate vehicle power or other power sources for the vehicle load, a Battery core stack used by the Battery is formed by connecting Battery cores in series or in parallel, and a Battery Management System (BMS) is used to control the charging and discharging states of the Battery and perform various protection functions.
However, in general, the battery management system directly connects the power source of the battery core stack, and the battery management system controls an output switch to determine whether the battery core stack can be charged or discharged, but this method cannot effectively block the potential between the battery core stack and the battery management system, so that the inspection or maintenance is difficult, the individual safety of the battery and the battery management system cannot be ensured, and if the battery management system is abnormal, there is a risk that the charging or discharging mechanism cannot be controlled, which causes a danger in use.
The inventor is concerned with the spirit of the active creation, and needs to think about a battery safety device of an electric vehicle capable of solving the above problems, and the utility model discloses a few research experiments are completed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective is providing an electric vehicle's battery safety device, through protection switch's setting, can be used to switch on and cut off the electric connection relation between battery core stack output tie line and the battery management system, carries out the separation protection when overhauing or changing battery management system for promote battery and battery management system's individuality security.
In order to achieve the above objects, the battery safety device of the present invention comprises a battery and a motor controller, wherein the battery comprises a battery core stack and a battery management system, the battery core stack comprises a plurality of battery cores, the battery management system comprises an operation unit and a battery output switch, and the battery management system is electrically connected to the battery core stack for controlling whether the battery output switch can be charged or discharged; the motor controller is electrically connected with the battery and a motor and is used for controlling the motor to move or not;
at least one protection switch is arranged between the battery core stack and the battery management system, and isolation protection is performed when the battery management system is overhauled or replaced, so that the individual safety of the battery core stack and the battery management system is improved. Through the design, the battery management system can be disassembled and assembled for maintenance in an uncharged state, and the protection switch can be switched on after the junction line of the battery core stack is connected to the battery management system after the maintenance is finished, so that the operation and the maintenance under the charged condition are effectively avoided.
The at least one protection switch can be a protection switch arranged at the positive end of the battery core stack electrically connected with the battery management system, so as to provide necessary isolation protection for the battery core stack and the battery management system and timely cut off a conducting circuit of the positive end electrically connected.
The at least one protection switch can be a protection switch arranged at the negative end of the electric connection between the battery core stack and the battery management system, so as to provide necessary isolation protection for the battery core stack and the battery management system and timely cut off the conducting circuit of the negative end of the electric connection.
The at least one protection switch can be two protection switches respectively arranged at the positive end and the negative end of the electric connection between the battery core stack and the battery management system, so as to provide necessary isolation protection for the battery core stack and the battery management system and timely cut off the conducting circuit of the electric connection positive end or the negative end.
The protection switch may be a manual switch, a fuse-less switch, or an electrically conductive plug. Therefore, the protection switch can cut off the conducting circuit when necessary, and a user can manually reset after the condition is eliminated, so that the protection switch has good operation convenience.
The at least one protection switch can be arranged on the shell of the battery, and the at least one protection switch is provided with basic shielding, waterproof and dustproof performances, so that a user can conveniently close the protection switch or manually reset the protection switch.
The at least one protection switch can be arranged in the battery, has better shielding and waterproof and dustproof performances, and can be operated when the battery needs to be overhauled or replaced.
The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the claimed invention. Other objects and advantages of the present invention will become apparent from the following description and drawings.
Drawings
Fig. 1 is a system configuration diagram of a battery safety device for an electric vehicle according to a first embodiment of the present invention.
Fig. 2 is a system configuration diagram of a battery safety device for an electric vehicle according to a second embodiment of the present invention.
Fig. 3 is a system configuration diagram of a battery safety device for an electric vehicle according to a third embodiment of the present invention.
Description of the main element symbols:
1a, 1b, 1c Battery safety device
2 batteries
21 core stack
3 Motor controller
4 Motor
5 Battery management system
51 arithmetic unit
S1, S1a and S1b protection switch
S2 battery output switch
Detailed Description
Referring to fig. 1, a system architecture diagram of a battery safety device of an electric vehicle according to a first embodiment of the present invention is shown. There is shown a battery safety device 1a for an electric vehicle, which is used in the present embodiment for a battery of an electric motorcycle, and which mainly includes a battery 2 and a motor controller 3.
The battery 2 includes a battery core stack 21 and a battery management system 5, the battery core stack 21 is formed by connecting a plurality of battery cores in series or in parallel and then being assembled together, and is used as a power source of the electric vehicle. The battery management system 5 is constructed on a circuit board, and includes an arithmetic unit 51 and a battery output switch S2 electrically connected to the battery core stack 21, wherein the arithmetic unit 51 can control the battery output switch S2 to control the charging/discharging state of the battery 2 and perform various protection functions. The motor controller 3 has one end electrically connected to the battery 2 and the other end electrically connected to a motor 4, receives power from the battery management system 5, and controls the operation of the motor 4.
Furthermore, the utility model discloses a biggest characterized in that: a protection switch S1 is disposed between the cell stack 21 and the battery management system 5, and the protection switch S1 is disposed at the positive end of the electrical connection between the cell stack 21 and the battery management system 5 for connecting and disconnecting the electrical connection between the output connection line of the cell stack 21 and the battery management system 5, so as to provide the necessary blocking protection for the cell stack 21 and the battery management system 5.
The protection switch S1 may be a manual switch, a non-fuse switch, or an electrically conductive plug. Therefore, the protection switch S1 can cut off the conducting circuit when necessary, and the user can manually reset after the condition is eliminated, thereby having good operation convenience. In the embodiment, the protection switch S1 is disposed inside the battery 2, and has better shielding, waterproof and dustproof performances, and the protection switch S1 inside the battery 2 is operated only when the battery needs to be repaired or replaced, but not limited thereto, the protection switch S1 may also be disposed on the housing of the battery 2, and is provided with basic shielding, waterproof and dustproof performances, so as to facilitate the user to turn off the protection switch or manually reset the protection switch.
In normal use, after the connection of the battery core stack 21 and the battery management system 5 are connected and the protection switch S1 is turned on, the battery management system 5 can control the battery output switch S2 disposed on the circuit board to enable the electric energy of the battery 2 to be output externally, the battery management system 5 can perform various protections such as overvoltage, low voltage, overcurrent, and the like during charging/discharging, and when the state of the battery 2 is abnormal, the operation unit 51 on the battery management system 5 determines that the battery output switch S2 can be turned off to protect the battery 2.
In the maintenance and change battery management system 5 use, the utility model discloses can close protection switch S1 earlier, separation battery core stack 21 and battery management system 5 between electric potential makes battery management system 5 can overhaul in the dismouting under the uncharged state, also can switch on protection switch S1 after finishing examining and connecting the knot line of battery core stack 21 to battery management system 5, effectively avoids operating and overhauing under the electrified condition.
Referring to fig. 2, a system architecture diagram of a battery safety device of an electric vehicle according to a second embodiment of the present invention is shown. The figure shows a battery safety device 1b of an electric vehicle, which is used for a battery of an electric motorcycle in the present embodiment, and the main structure thereof is the same as that of the first embodiment, and thus the description thereof is omitted. Except that a protection switch S1 is disposed between the cell stack 21 and the battery management system 5, and the protection switch S1 is disposed at the negative end of the electrical connection between the cell stack 21 and the battery management system 5 for connecting and disconnecting the electrical connection between the output connection of the cell stack 21 and the battery management system 5, so as to provide the necessary blocking protection for the cell stack 21 and the battery management system 5.
Referring to fig. 3, a system architecture diagram of a battery safety device of an electric vehicle according to a third embodiment of the present invention is shown. The figure shows a battery safety device 1c of an electric vehicle, which is used for a battery of an electric motorcycle in the present embodiment, and the main structure thereof is the same as that of the first embodiment, and thus the description thereof is omitted. The only difference is that two protection switches S1a and S1b are disposed between the battery core stack 21 and the battery management system 5, and the two protection switches S1a and S1b are respectively disposed at the positive terminal and the negative terminal of the electrical connection between the battery core stack 21 and the battery management system 5 for connecting and disconnecting the electrical connection between the output connection line of the battery core stack 21 and the battery management system 5, so as to provide the necessary blocking protection for the battery core stack 21 and the battery management system 5.
Through the three kinds of designs, the utility model discloses can carry out the separation protection when overhauing or changing battery management system, effectively improve among the prior art under the battery management system abnormal state, have uncontrollable risk of charging or discharging for promote battery and battery management system's individuality security.
Claims (7)
1. A battery safety device for an electric vehicle, comprising:
the battery comprises a battery core stack and a battery management system, wherein the battery core stack consists of a plurality of battery cores, and the battery management system comprises an arithmetic unit and a battery output switch which are electrically connected with the battery core stack; and
a motor controller electrically connected to the battery and a motor for controlling the operation of the motor;
the method is characterized in that: at least one protection switch is arranged between the battery core stack and the battery management system, and isolation protection is performed when the battery management system is overhauled or replaced, so that the individual safety of the battery core stack and the battery management system is improved.
2. The battery safety device of an electric vehicle according to claim 1, characterized in that: the at least one protection switch is a protection switch arranged at the positive end of the battery core stack electrically connected with the battery management system.
3. The battery safety device of an electric vehicle according to claim 1, characterized in that: the at least one protection switch is a protection switch arranged at the negative end of the battery core stack electrically connected with the battery management system.
4. The battery safety device of an electric vehicle according to claim 1, characterized in that: the at least one protection switch is two protection switches respectively arranged at the positive end and the negative end of the battery core stack electrically connected with the battery management system.
5. The battery safety device of an electric vehicle according to claim 1, characterized in that: the protection switch is a manual switch, a fuse-free switch or an electrically conductive plug.
6. The battery safety device of an electric vehicle according to claim 1, characterized in that: the at least one protection switch is arranged on the shell of the battery.
7. The battery safety device of an electric vehicle according to claim 1, characterized in that: the at least one protection switch is arranged inside the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021394009.2U CN212796538U (en) | 2020-07-15 | 2020-07-15 | Battery safety device of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021394009.2U CN212796538U (en) | 2020-07-15 | 2020-07-15 | Battery safety device of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212796538U true CN212796538U (en) | 2021-03-26 |
Family
ID=75102474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021394009.2U Active CN212796538U (en) | 2020-07-15 | 2020-07-15 | Battery safety device of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212796538U (en) |
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2020
- 2020-07-15 CN CN202021394009.2U patent/CN212796538U/en active Active
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