Electric vehicle power supply system with standby power supply
By designing a parallel power supply scheme for a backup power system in electric vehicles, the problem of vehicle breakdowns due to insufficient power is solved, enabling normal driving even when the power is depleted, thus improving the operational reliability and safety of electric vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIJING UNIV
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-05
AI Technical Summary
Electric vehicles often break down due to insufficient battery power, requiring towing assistance, which consumes manpower, resources, and time.
Design an electric vehicle power system with a backup power source. Switch between the main power source and the backup power source via a rotary switch to achieve parallel power supply of the main battery and the backup power battery, ensuring normal operation even when the battery is depleted.
When the battery is depleted, there is no need for a tow truck; the system can directly switch to a backup power source, saving manpower, resources, and time, and improving the reliability and safety of electric vehicles.
Smart Images
Figure CN224197597U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric vehicle technology, and in particular to an electric vehicle power supply system containing a backup power source. Background Technology
[0002] Electric vehicles are widely used in daily life. The power system of electric vehicles usually adopts a single power supply architecture, that is, the high-voltage power battery is used as the only power source to supply power to all systems of the vehicle. Generally, there is no backup power source. During use, the vehicle often breaks down due to insufficient power, requiring tow truck assistance, which consumes a lot of manpower, material resources, financial resources and time. Summary of the Invention
[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide an electric vehicle power system with a backup power supply. When the vehicle breaks down, it can be directly switched to the backup power supply by manual operation so that the vehicle can be restarted and a charging station can be found smoothly without the need to contact a tow truck, thus saving manpower, material resources, financial resources and time.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] An electric vehicle power system with a backup power source includes a main power source and a backup power source. The main power source's power battery 2 has a first power input terminal 15 and a first power output terminal 3, and the backup power source's backup power battery 10 has a second power input terminal 13 and a second power output terminal 8. The first power input terminal 15 and the second power input terminal 13 are connected to a charging terminal 14 in parallel. The positive terminals of the first power output terminal 3 and the second power output terminal 8 are connected to a drive motor 5. The drive motor 5 is connected to a rotary switch 6, and the rotary switch 6 is installed in the vehicle's driver's cab.
[0006] The rotary switch 6 is provided with a normal contact point 4 and an emergency contact point 7. The normal contact point 4 is connected to the negative terminal of the first power output terminal 3 of the power battery 2, and the emergency contact point 7 is connected to the negative terminal of the second power output terminal 8 of the backup power battery 10. The rotary switch 6, the power battery 2, the backup power battery 10 and the drive motor 5 form a selection circuit.
[0007] The main power supply mechanism includes a first explosion-proof box 1, which is mounted on the vehicle frame 16. The first explosion-proof box 1 contains a power battery 2, which is mounted on a first shock-absorbing base and fixed to the bottom of the inner wall of the first explosion-proof box 1.
[0008] The first shock-absorbing base consists of a first shock-absorbing damper 18 and a first insulating plate 17. The bottom of the first shock-absorbing damper 18 is fixed to the bottom of the inner wall of the first explosion-proof box 1, and the top of the first shock-absorbing damper 18 is connected to the first insulating plate 17. The power battery 2 is installed on the top of the first insulating plate 17.
[0009] The backup power mechanism includes a second explosion-proof box 9, which is mounted on the vehicle frame 16. The second explosion-proof box 9 contains a backup power battery 10, which is mounted on a second shock-absorbing base and fixed to the bottom of the inner wall of the second explosion-proof box 9.
[0010] The second shock-absorbing base consists of a second shock absorber 12 and a second insulating plate 11. The bottom of the second shock absorber 12 is fixed to the bottom of the inner wall of the second explosion-proof box 9, and the top of the second shock absorber 12 is connected to the second insulating plate 11. A spare power battery 10 is installed on the top of the second insulating plate 11.
[0011] Compared with the prior art, the advantages of this utility model are: when the vehicle faces a power outage and breakdown, the main power mechanism can be switched to the backup power mechanism to supply power to the drive motor directly through the knob switch in the driver's cab, so that the vehicle can get out of trouble; the power battery 2 and the backup power battery 10 can be charged at the same time, and the two can be used separately when the vehicle is running without affecting each other; the use of the shock-absorbing base can reduce the impact of vibration generated by the vehicle driving on the power battery, and improve safety and stability. Attached Figure Description
[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model. Detailed Implementation
[0013] The present invention will now be described in detail with reference to the accompanying drawings.
[0014] Reference Figure 1 An electric vehicle power system with a backup power source includes a main power source and a backup power source. The main power source's power battery 2 has a first power input terminal 15 and a first power output terminal 3, and the backup power source's backup power battery 10 has a second power input terminal 13 and a second power output terminal 8. The first power input terminal 15 and the second power input terminal 13 are connected to a charging terminal 14 in parallel. The positive terminals of the first power output terminal 3 and the second power output terminal 8 are connected to a drive motor 5. The drive motor 5 is connected to a rotary switch 6, which is installed in the vehicle's driver's cab. The rotary switch 6 has a normal contact point 4 and an emergency contact point 7. The normal contact point 4 is connected to the negative terminal of the first power output terminal 3 of the power battery 2 via a wire, and the emergency contact point 7 is connected to the negative terminal of the second power output terminal 8 of the backup power battery 10 via a wire. The rotary switch 6, the power battery 2, the backup power battery 10, and the drive motor 5 form a selection circuit.
[0015] The main power supply mechanism includes a first explosion-proof box 1, which is mounted on the vehicle frame 16 by fixing screws 19. The first explosion-proof box 1 contains a power battery 2, which is mounted on a first shock-absorbing base and fixed to the bottom of the inner wall of the first explosion-proof box 1. The first shock-absorbing base consists of a first shock absorber 18 and a first insulating plate 17. The bottom of the first shock absorber 18 is fixed to the bottom of the inner wall of the first explosion-proof box 1, and the top of the first shock absorber 18 is connected to the first insulating plate 17. The power battery 2 is mounted on the top of the first insulating plate 17.
[0016] The backup power supply mechanism includes a second explosion-proof box 9, which is mounted on the vehicle frame 16 by fixing screws 19. A backup power battery 10 is installed inside the second explosion-proof box 9. The backup power battery 10 is installed on the second shock-absorbing base and fixed to the bottom of the inner wall of the second explosion-proof box 9. The second shock-absorbing base consists of a second shock absorber 12 and a second insulating plate 11. The bottom of the second shock absorber 12 is fixed to the bottom of the inner wall of the second explosion-proof box 9, and the top of the second shock absorber 12 is connected to the second insulating plate 11. The backup power battery 10 is installed on the top of the second insulating plate 11.
[0017] The working principle of this utility model is as follows: the power battery 2 and the backup power battery 10 are charged simultaneously through the charging terminal 14; when fully charged, the rotary switch 6 in the cab is turned to connect to the normal contact point 4, connecting the power battery 2 to supply power to the drive motor 5, and the vehicle starts; when the power battery 2 is depleted and the vehicle breaks down, the rotary switch 6 is turned to connect to the emergency contact point 7, connecting the backup power battery 10 to supply power to the drive motor 5, ensuring the vehicle can drive normally.
Claims
1. An electric vehicle power system containing a backup power source, characterized in that: It includes a main power supply mechanism and a backup power supply mechanism; the power battery (2) of the main power supply mechanism is provided with a first power input terminal (15) and a first power output terminal (3), and the backup power battery (10) of the backup power supply mechanism is provided with a second power input terminal (13) and a second power output terminal (8); the first power input terminal (15) and the second power input terminal (13) are connected to the charging terminal (14) in parallel, the positive terminal of the first power output terminal (3) and the positive terminal of the second power output terminal (8) are connected to the drive motor (5), the drive motor (5) is connected to the rotary switch (6), and the rotary switch (6) is installed in the vehicle cab.
2. The electric vehicle power system according to claim 1, characterized in that: The rotary switch (6) is provided with a normal contact point (4) and an emergency contact point (7). The normal contact point (4) is connected to the negative terminal of the first power output terminal (3) of the power battery (2), and the emergency contact point (7) is connected to the negative terminal of the second power output terminal (8) of the backup power battery (10). The rotary switch (6) forms a selection circuit with the power battery (2), the backup power battery (10) and the drive motor (5).
3. The electric vehicle power system according to claim 1, characterized in that: The main power supply mechanism includes a first explosion-proof box (1), which is mounted on the vehicle frame (16). The first explosion-proof box (1) contains a power battery (2), which is mounted on a first shock-absorbing base and fixed to the bottom of the inner wall of the first explosion-proof box (1).
4. The electric vehicle power supply system according to claim 3, characterized in that: The first shock-absorbing base consists of a first shock-absorbing damper (18) and a first insulating plate (17). The bottom of the first shock-absorbing damper (18) is fixed to the bottom of the inner wall of the first explosion-proof box (1). The top of the first shock-absorbing damper (18) is connected to the first insulating plate (17). A power battery (2) is installed on the top of the first insulating plate (17).
5. The electric vehicle power supply system according to claim 1, characterized in that: The backup power supply mechanism includes a second explosion-proof box (9), which is mounted on the vehicle frame (16). The second explosion-proof box (9) contains a backup power battery (10), which is mounted on a second shock-absorbing base and fixed to the bottom of the inner wall of the second explosion-proof box (9).
6. The electric vehicle power supply system according to claim 5, characterized in that: The second shock-absorbing base consists of a second shock-absorbing damper (12) and a second insulating plate (11). The bottom of the second shock-absorbing damper (12) is fixed to the bottom of the inner wall of the second explosion-proof box (9). The top of the second shock-absorbing damper (12) is connected to the second insulating plate (11). A spare power battery (10) is installed on the top of the second insulating plate (11).