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Vehicle, energy conversion device and control method thereof

A technology of an energy conversion device and a control method, which is applied in the field of vehicles, can solve problems such as unusable battery packs, and achieve the effects of heating, improving heating efficiency, and parking heating

Pending Publication Date: 2021-12-07
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 pack is basically 0, which makes the battery pack unusable

Method used

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  • Vehicle, energy conversion device and control method thereof
  • Vehicle, energy conversion device and control method thereof
  • Vehicle, energy conversion device and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0047] In order to illustrate the technical solution of the present application, specific examples are used below to illustrate.

[0048] Embodiment 1 of the present application provides an energy conversion device, such as figure 1 As shown, the energy conversion device includes:

[0049] Bridge arm converter 101, the first end of each road bridge arm of bridge arm converter 101 is connected in common to form the first confluence end, and the second end of each road bridge arm of bridge arm converter 101 is connected in common to form the second confluence end;

[0050] The bus capacit...

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PUM

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Abstract

According to the technical scheme, the invention provides a vehicle, an energy conversion device and a control method thereof. The energy conversion device comprises a bridge arm converter, a bus capacitor, a motor and a battery pack, wherein the bridge arm converter is controlled to enable the discharging process of the battery pack to the bus capacitor and the charging process of the bus capacitor to the battery pack to be alternately carried out so as to achieve temperature rise of the battery pack; the bus capacitor participates in the charging and discharging process, a problem that a large amount of current passes through the bus capacitor during discharging of the battery pack,the current flowing through the battery pack is greatly reduced, and the heating speed of the battery pack is seriously slowed down is solved, heating efficiency of the battery pack is improved, meanwhile, parking heating can be achieved, and driving heating can be achieved, and heating of the vehicle in different running states is achieved.

Description

technical field [0001] The present application relates to the technical field of vehicles, in particular to a vehicle, an energy conversion device and a control method thereof. Background technique [0002] With the widespread use of new energy sources, battery packs can be used as power sources in various fields. Depending on the environment in which the battery pack is used as a power source, the performance of the battery pack will also be affected. For example, the performance of a battery pack 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 pack will decrease as the temperature decreases. Under the condition of -30°C, the discharge capacity of the battery pack is basically 0, making the battery pack unusable. In order to be able to use the battery pack in a low temperature environment, it is necessary to preheat the battery pack before using i...

Claims

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Application Information

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IPC IPC(8): B60L58/27B60L15/20H01M10/615H01M10/625H01M10/637
CPCB60L58/27B60L15/20H01M10/615H01M10/625H01M10/637Y02E60/10Y02T10/70Y02T10/72
Inventor 潘华熊永洪臣谢飞跃史建勇
Owner BYD CO LTD