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Battery charging protective device and method

A technology of battery charging and protection device, applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problems of inaccurate regulation and battery compartment temperature exceeding the threshold value, to avoid temperature overshoot and ensure safety , The precise effect of temperature control

Active Publication Date: 2017-02-22
湖南容创科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the residual heat after the heating device is turned off will continue to heat the battery compartment, which may cause the temperature of the battery compartment to exceed the threshold
Therefore, the currently commonly used method to prevent the battery temperature from being too low is not accurate.

Method used

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Embodiment Construction

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes ...

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Abstract

The invention relates to a battery charging protective device and method; surface temperature of a heater is monitored through a second sensor; the heater may be stopped if the surface temperature of the heater is higher than a second threshold. Compared with the methods where a heater is started and stopped only in direct accordance with the temperature of a battery pack, the above method is effective in preventing excessive battery pack temperature due to temperature over-adjustment caused by heat transfer delay. Therefore, the above battery charging protective device and method enable the start and stop of the heater to be controlled precisely according to the temperature of the heater itself, temperature over-adjustment of the heater is avoided, temperature control is more precise, and safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to a battery charging protection device and method. Background technique [0002] With the intensification of environmental pollution, new energy vehicles such as electric vehicles have also been rapidly developed. In an electric vehicle, the battery can be said to be the most important component, and the battery life and battery capacity directly affect the life and cruising range of the electric vehicle. [0003] The batteries of electric vehicles need to be charged and discharged frequently. As we all know, low temperature has a great impact on battery life and charge and discharge efficiency. As the temperature drops, the reaction rate of the electrodes also drops. Assuming the voltage remains constant, the current decreases and the battery's charging and discharging power decreases. Therefore, it is generally necessary to heat the battery in a low temperature env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/44
CPCH01M10/42H01M10/44Y02E60/10
Inventor 林勇曹流周显宋吴超
Owner 湖南容创科技有限公司
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