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Power battery having temperature control device

A temperature control device, power battery technology, applied in battery temperature control, secondary batteries, circuits, etc., can solve problems such as inability to effectively control, inability to determine the point resistance difference of the battery assembly, and to achieve a basically constant state. Simple structure, low cost, and the effect of maintaining cooling temperature

Inactive Publication Date: 2012-10-24
方春怡
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The point resistance difference inside the parallel battery assembly cannot be determined, nor can it be effectively controlled to achieve a basically constant state

Method used

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  • Power battery having temperature control device
  • Power battery having temperature control device
  • Power battery having temperature control device

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] Such as figure 1 For the battery shown in , when the air temperature or its own temperature is lower than -10°C, the characteristics of materials such as iron and lithium determine that it will not undergo chemical reactions. Therefore, the starting temperature of the battery assembly needs to be above 10°C, and it is forced to start at 0°C. Discharging or charging at low temperature also reduces the cycle life of the battery cell. The constant temperature battery assembly improves the external working environment and strictly controls the working temperature of the battery assembly to raise or lower the temperature of the assembly, so that the single battery cell (or flat square battery or pouch battery) 4 can be kept at an appropriate temperature environment , to solve the range of lithium batteries used in high latitude areas.

[0027] The characteristic of this solution is to use the most traditional and mature technology and process widely used in automobile water...

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PUM

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Abstract

A power battery having a temperature control device comprises a plurality of series and / or parallel single battery cells (4), the battery temperature control device and a housing (5). The battery temperature control device is arranged between the single battery cells (5), the external of the power battery is packaged with the housing (5), and the battery temperature control device is a closed liquid cycle system, and comprises one or more capillary flat tubes (2) among the single battery cells (4), storage tanks (1) communicating both ends of the capillary flat tubes (2), a cycle outer tube communicating the two storage tanks (1), and a radiator and a power pump arranged on the middle of the outer tube; and the capillary flat tubes (2) and the storage tanks (1) are filled with a thermal conductive medium.

Description

(1) Technical field [0001] The invention relates to a power battery, in particular to a power battery with a temperature control device, which can maintain a constant temperature when the power battery is working. (2) Background technology [0002] As the main energy storage element, the battery pack is a key component of a car, especially an electric car, which directly affects the performance of the car. Lithium-ion power batteries are currently used in automotive battery packs due to their excellent power output characteristics and long life. However, the performance of lithium-ion power batteries is sensitive to temperature changes, especially the large-capacity, high-power lithium-ion batteries used in vehicles. [0003] The loading space on the vehicle is limited, and the number of batteries required by the vehicle is relatively large, and the batteries are all closely arranged and connected. In order to achieve the watt-hour capacity required by the power of vehicle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/50H01M10/613H01M10/625H01M10/637H01M10/6557H01M10/6568H01M10/66
CPCY02E60/12
Inventor 王晏方平福
Owner 方春怡
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