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Energy conversion device and its safety control method

An energy conversion device, energy storage technology, applied in the field of vehicles, can solve problems such as battery unusable

Active Publication Date: 2020-10-23
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the condition of -30℃, the discharge capacity of the battery is basically 0, which makes the battery unusable

Method used

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  • Energy conversion device and its safety control method
  • Energy conversion device and its safety control method
  • Energy conversion device and its safety control method

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Embodiment Construction

[0050] The specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementations described here are only used to illustrate and explain the present application, and are not intended to limit the present application.

[0051] figure 1 is a schematic topology of an energy conversion device according to an embodiment of the present application. Such as figure 1 As shown, the energy conversion device includes a first switch module 10 , a motor inverter 20 , a motor winding 30 , a second switch module 40 , a first capacitor 50 and a controller 60 . figure 1 The dotted line in refers to that the controller 60 transmits control signals to the first switch module 10, the motor inverter 20, the second switch module 40, etc. to control the first switch module 10, the motor inverter 20, the second switch Actions of module 40 .

[0052] Such as figure 1 As s...

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Abstract

The present application relates to an energy conversion device and a safety control method thereof, which belong to the field of vehicles and can realize safety control of the energy conversion device. The energy conversion device includes: a first switch module; a motor inverter, the first and second bus terminals of which are respectively connected to the first and second terminals of the battery, and the first switch module controls the connection between the first bus terminal and the first bus terminal of the battery. terminal and / or control the on-off of the second bus terminal and the second terminal of the battery; the motor winding, the first terminal of which is connected to the midpoint terminal of the motor inverter; the second switch module and the first capacitor, both connected in series, the first terminal of the second switch module and the first capacitor connected in series are connected to the second terminal of the motor winding, and the second terminal thereof is connected to the second bus terminal; the method includes: command to control the first switch module to turn off to disconnect the battery from the motor inverter, and to control the motor inverter to discharge energy to the first capacitor when the second switch module is turned on.

Description

technical field [0001] The present application relates to the vehicle field, and in particular, relates to an energy conversion device and a safety control method thereof. Background technique [0002] With the widespread use of new energy sources, batteries can be used as power sources in various fields. Depending on the environment in which the battery is used as a power source, the performance of the battery will also be affected. For example, the performance of a battery in a low temperature environment will be reduced to a greater extent than that at normal temperature. For example, at zero temperature, the discharge capacity of the battery will decrease as the temperature decreases. Under the condition of -30°C, the discharge capacity of the battery is basically 0, making the battery unusable. In order to be able to use the battery in a low temperature environment, the battery needs to be heated. Contents of the invention [0003] The purpose of this application ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/615B60L53/00B60L53/24B60L58/27
CPCH02J7/0029H01M10/615B60L53/00B60L53/24B60L58/27H01M2220/20Y02T10/70Y02T10/7072Y02T90/14Y02E60/10Y02T10/72H02M7/5387H02M1/32B60L50/40H02J7/345H02J2207/20H02J2207/50H02J2310/40H02P3/22H02P29/0241H02P27/06B60L50/51B60L3/0092B60R16/03H01M10/4264H01M10/46H02P27/08
Inventor 廉玉波凌和平刘长久刘海军武运峰
Owner BYD CO LTD
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