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Driving circuit and charging and discharging method for electric vehicle

A drive circuit and technology for electric vehicles, applied in electric vehicle charging technology, electric vehicles, battery circuit devices, etc., can solve the problems of slow charging speed and low charging efficiency

Active Publication Date: 2022-01-14
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the driving circuit of the prior art, three battery packs are arranged in parallel, and the charging speed of the electric vehicle is slow and the charging efficiency is low

Method used

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  • Driving circuit and charging and discharging method for electric vehicle
  • Driving circuit and charging and discharging method for electric vehicle
  • Driving circuit and charging and discharging method for electric vehicle

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Embodiment Construction

[0067] In order to more easily understand the driving circuit for electric vehicles provided in the embodiments of the present application, the following firstly combines figure 2 The structure of an electric vehicle is introduced. figure 2 Schematic diagram of the structure of the electric vehicle provided for the embodiment of this application Figure 1 . In order to ensure the normal driving of electric vehicles, multiple electronic control units (electronic control units, ECUs) can be installed on electric vehicles, also known as "travel computer", which is a special microcomputer controller for electric vehicles. For example, the ECU set in the transmitter system can Used to control engine operation. With the electronic development of electric vehicles, ECU gradually penetrates into various systems of electric vehicles, such as anti-lock braking system, motor drive system, airbag system, etc., as well as body safety, entertainment, network, sensor control systems, etc...

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PUM

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Abstract

The embodiment of the present application provides a driving circuit and a charging and discharging method for an electric vehicle. When the driving circuit is in the discharging phase, the first battery pack, the second battery pack and the third battery pack in the driving circuit can be connected in parallel, To drive the motor with power supply, when the drive circuit is in the discharge stage, the first battery pack, the second battery pack and the third battery pack in the drive circuit can be connected in series, so that the charging device can use high voltage to charge the drive circuit, improving the The charging efficiency of the drive circuit.

Description

technical field [0001] Embodiments of the present application relate to electric vehicle technology, and in particular, relate to a driving circuit and a charging and discharging method for an electric vehicle. Background technique [0002] With the development of battery technology, electric vehicles are increasing day by day. After the external charging equipment charges the battery in the electric vehicle, the battery can drive the motor of the electric vehicle to run, and the battery can also supply power for loads such as air conditioners and heaters in the electric vehicle. Therefore, the circuit connection design of the battery as the core of the electric vehicle is particularly important. [0003] figure 1 It is a schematic diagram of the structure of the driving circuit in the electric vehicle in the prior art Figure 1 . figure 1 The drive circuit includes three parallel battery packs, battery pack A, battery pack B and battery pack C, each battery pack include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/19B60L15/20B60L53/00B60L1/00H02J7/00
CPCB60L58/19B60L15/20B60L53/00B60L1/00H02J7/0013Y02T10/70Y02T10/7072Y02T90/14Y02T10/72Y02T10/92B60L1/06B60L1/08B60L50/60B60L2210/14
Inventor 程洋章雪亮
Owner HUAWEI DIGITAL POWER TECH CO LTD