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Power supply control device, low-voltage power supply system and motor vehicle

A technology for power control devices and motor vehicles, which is applied in battery/fuel cell control devices, electric vehicles, and electrical devices.

Pending Publication Date: 2021-10-22
HUNAN CSR TIMES ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present application provides a power control device, a low-voltage power supply system and a motor vehicle to solve the problem of series electricity between the DC / DC module and the storage battery, and to avoid the power supply of the low-voltage load in the DC / DC module Power loss problem when switching between battery and battery

Method used

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  • Power supply control device, low-voltage power supply system and motor vehicle
  • Power supply control device, low-voltage power supply system and motor vehicle
  • Power supply control device, low-voltage power supply system and motor vehicle

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Embodiment Construction

[0041] As mentioned in the Background Art, refer to figure 1 , when the DC / DC module 20 and the lead-acid battery 10 of the vehicle are connected in parallel with the low-voltage load 30, there may be a series of electricity between the two power sources, that is, the DC / DC module 20 may be received from the vehicle. The sinking current of the lead-acid battery 10 causes the DC / DC module 20 to burn out, and the lead-acid battery 10 of the whole vehicle may receive the sinking current from the DC / DC module 20 and cause the lead-acid battery 10 of the whole vehicle to burn out. figure 1 Among them, I1 represents the current sinking from the DC / DC module 20 to the vehicle lead-acid battery 10 , and I2 represents the current sinking from the vehicle lead-acid battery 10 to the DC / DC module 20 .

[0042] In order to solve this problem, an embodiment of the present application provides a power control device, the power control device includes a path switching module and a unidirecti...

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Abstract

The invention discloses a power supply control device, a low-voltage power supply system and a motor vehicle, the power supply control device comprises a circuit switching module and a one-way conduction module, through switching of the circuit switching module between a first state and a second state, safe switching of a power supply of a low-voltage load between a DC / DC module and a storage battery is achieved, and string current between the DC / DC module and the storage battery is avoided; the one-way conduction module, the storage battery and the low-voltage load form a temporary conduction loop in the switching process of the circuit switching module between the first state and the second state, and the situation of power failure of the low-voltage load in the switching process is avoided.

Description

technical field [0001] The present application relates to the technical field of circuit design, and more specifically, relates to a power control device, a voltage power supply system and a motor vehicle. Background technique [0002] With the continuous maturity of new energy vehicle technology, electric vehicles powered by power batteries account for an increasing share of the motor vehicle market. [0003] The low-voltage load in electric vehicles is mainly composed of devices such as relays, current sensors, and insurance. Relays and current generators need to be powered by a low-voltage power supply to maintain their work. If the low-voltage power supply suddenly loses power, there will be a sudden interruption of the working status of the relay and the current sensor, which may cause the relay to cut off the large current and the data of the current sensor to suddenly lose. , And then lead to damage to the relay or the sudden loss of power performance of the vehicle....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/10B60L1/00B60L3/00
CPCB60L58/10B60L1/00B60L3/0046Y02T10/70
Inventor 龙宇舟卿鑫慧黄河刘进程刘孟牛满岗张楷翼
Owner HUNAN CSR TIMES ELECTRIC VEHICLE
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