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Power battery thermal management method

A battery thermal management and power battery technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of high power consumption of thermal management units, large thermal management space, and insignificant effects, and improve thermal management efficiency. High thermal management efficiency, small footprint effect

Inactive Publication Date: 2011-12-21
NANJING SHUANGDENG SCI TECH DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of backup power supply, a number of backup power supplies are generally assembled in a closed warehouse, and a cooling unit and a heating unit are installed somewhere in the warehouse to heat and cool the internal space of the battery pack. This method has a large space for thermal management. The thermal management unit consumes a lot of power, and the effect is not obvious
In the field of power supply, there is no battery thermal management on micro-hybrid and light-hybrid vehicles, resulting in a decrease in battery performance; most full-hybrid and pure electric vehicles use the entire set of air-cooled and liquid-cooled methods, which often cannot take into account each battery. The performance degradation of one or part of the batteries will affect the performance of the whole battery pack

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: see figure 1 , Reserve a thermal management channel 2 inside the power battery barrel 1, which is connected to the battery cavity 4. According to the needs of the battery operating temperature, the cooling and heating devices arranged outside the inlet 3 respectively make cold or hot gas (Air) enters from the inlet, passes through the thermal management channel, and flows through the inner cavity of the battery, and then flows out from the outlet 5. There is an exhaust fan at the outlet, and windshields 6 are respectively provided at the corners of the thermal management channel near the exit and the entrance. , Make the gas flow in an orderly direction as shown by the arrow in the figure.

example 2

[0011] Example 2: see figure 2 , Reserve a thermal management channel 8 inside the power battery barrel 7, which is isolated from the battery cavity 9 and in a sealed state. According to the needs of the battery operating temperature, the cooling and heating devices provided outside the inlet 10 are used to make Cold or hot liquid (purified water) enters from the inlet under a certain pressure, passes through the thermal management channel, and then flows out from the outlet 11, and is recycled and reused. The arrow in the figure shows the liquid flow direction.

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PUM

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Abstract

The invention discloses a power battery thermal management method, which relates to the technical field of power battery use. A thermal management channel is reserved in the battery barrel body, and the cooling and heating devices arranged at the inlet are used to make cold and hot fluids flow through the above channels respectively as required to implement small-scale battery thermal management. The thermal management channel may be in communication with the inner cavity of the battery, or may be isolated. The invention is used for thermal management of power batteries, involves small space, low power consumption, high efficiency, can take into account each battery, and effectively improves the performance of the entire battery group.

Description

Technical field [0001] The invention relates to the use of power batteries, in particular to a thermal management method for power batteries. Background technique [0002] In recent years, green energy has been vigorously promoted globally, and the development of new energy vehicles has been strongly supported by governments of various countries. The development of power batteries is also extremely popular. However, due to the current battery technology limitations, the use of power batteries is affected by temperature and the performance of power batteries is reduced. Obviously, such as: the battery charge and discharge capacity is greatly reduced at low temperature; at high temperature, the electrolyte volatilization and the aging of the pole pieces will be accelerated and the battery life will be reduced. It is necessary to choose a better thermal management method to improve the battery performance. Research topics. [0003] The current battery thermal management methods vary ...

Claims

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Application Information

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IPC IPC(8): H01M10/50H01M10/6552
CPCY02E60/12
Inventor 许谦张鹏程传捷张华
Owner NANJING SHUANGDENG SCI TECH DEV RES INST