Electric vehicle, power battery charging control method, power battery temperature maintaining control method and power battery management system

A charging control method and power battery technology, which are applied in electric vehicle charging technology, electric vehicles, battery/fuel cell control devices, etc., can solve the problem that power batteries are not allowed to work, etc.

Pending Publication Date: 2020-12-25
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the case of extremely low or extremely high ambient temperature, electric vehicle power batteries are not allowed to work

Method used

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  • Electric vehicle, power battery charging control method, power battery temperature maintaining control method and power battery management system
  • Electric vehicle, power battery charging control method, power battery temperature maintaining control method and power battery management system
  • Electric vehicle, power battery charging control method, power battery temperature maintaining control method and power battery management system

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Embodiment Construction

[0026] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0027] figure 1 A flowchart showing a power battery charging control method according to an embodiment of the present disclosure, such as figure 1 As shown, the method includes the following steps S11 to S14.

[0028] In step S11, if the temperature of the power battery is not within the allowable temperature range for charging, the power battery is electrically separated from the charging circuit.

[0029] When the temperature of the power battery is not within the allowable temperature range for charging, such as in low temperature, high temperature, etc., due to the increase in the viscosity of the electrolyte of the power battery, the charge and dischar...

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Abstract

The invention discloses an electric vehicle, a power battery charging control method, a power battery temperature maintaining control method and a power battery management system. It can be ensured that a power battery works safely under the condition that the environment temperature is extremely low or extremely high. The power battery charging control method comprises the following steps that the power battery is electrically separated from a charging loop under the condition that the temperature of the power battery is not within a temperature range allowing charging; after the power battery is electrically separated from the charging loop, the electricity of a charging pile is used for providing constant direct-current high-voltage electricity required by work for a battery thermal management system; real-time temperature information of the power battery is received, and the battery thermal management system is controlled to adjust the temperature of the power battery based on thereal-time temperature information; and the power battery is connected into the charging loop under the condition that the temperature of the power battery is within the temperature range allowing charging.

Description

technical field [0001] The present disclosure relates to the field of electric vehicles, and in particular, to an electric vehicle and a power battery charging and temperature maintenance control method and system. Background technique [0002] At present, electric vehicle power batteries are not allowed to work when the ambient temperature is extremely low or extremely high. Therefore, how to ensure the safe operation of the power battery under the condition of extremely low or extremely high ambient temperature is an urgent problem to be solved. Contents of the invention [0003] The purpose of the present disclosure is to provide an electric vehicle and a power battery charging and temperature maintenance control method and system, which can ensure the safe and reliable operation of the power battery when the ambient temperature is extremely low or extremely high. [0004] According to the first embodiment of the present disclosure, a power battery charging control met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/31B60L58/24B60L58/10
CPCB60L53/31B60L58/10B60L58/24Y02T10/70Y02T10/7072Y02T90/12
Inventor 宋金梦棘文建陈斯良曹露蓉黄伟
Owner BYD CO LTD
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