Electric vehicle and power battery active temperature equalization system thereof

A technology for power batteries and electric vehicles, applied in secondary batteries, circuits, electrical components, etc., can solve problems such as temperature imbalance, affecting electric vehicle control, battery performance imbalance, etc., to ensure consistency, achieve temperature balance, The effect of improving accuracy and reliability

Inactive Publication Date: 2018-01-09
NEUSOFT REACH AUTOMOTIVE TECH SHANGHAI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, no matter whether it is heating or cooling the power battery, due to the dense arrangement of single cells in the power battery, the heat accumulated in the middle area must be more, while the heat in the edge area must be less, which will lead to each unit of the power battery. The temper

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  • Electric vehicle and power battery active temperature equalization system thereof
  • Electric vehicle and power battery active temperature equalization system thereof
  • Electric vehicle and power battery active temperature equalization system thereof

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Example Embodiment

[0024] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0025] The following describes the active temperature equalization system for the power battery of the electric vehicle and the electric vehicle provided with the same in the embodiments of the present invention with reference to the accompanying drawings.

[0026] figure 1 It is a schematic structural diagram of an active temperature equalization system for an electric vehicle power battery according to an embodiment of the present invention. Such as figure 1 As shown, the electric vehicle power bat...

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Abstract

The invention discloses an electric vehicle and a power battery active temperature equalization system thereof. The system comprises a power battery, a temperature detector, a heat exchange cold plate, a water pump and a controller, wherein the temperature detector is used to detect the temperature of each battery cell in the power battery; the heat exchange cold plate is arranged corresponding tothe power battery to heat or cool the power battery through heat exchange liquid; the water pump is connected with the heat exchange cold plate, when the water pump rotates forwards, the heat exchange liquid flows from a first end of the heat exchange cold plate to a second end, and when the water pump rotates reversely, the heat exchange liquid flows from the second end of the heat exchange coldplate to the first end; and the controller is separately connected with the temperature detector and the water pump, and the controller controls the water pump to switch between positive rotation andreverse rotation to change the flow direction of the heat exchange liquid when determining that the temperature difference between any two battery cells is greater than or equal to a preset temperature threshold based on the temperature of each battery cell, and thus the temperature equalization of the power battery can be achieved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an active temperature equalization system for electric automobiles and power batteries thereof. Background technique [0002] Temperature has a great influence on the working state of the power battery. For example, under low temperature conditions, the discharge capacity of the power battery drops rapidly, especially for lithium-ion batteries; At the same time, the power battery is a relatively closed environment. If the heat is not discharged in time, it will lead to thermal runaway, shortened life and damage of the power battery. Therefore, it is necessary to heat or cool the power battery. [0003] However, no matter whether it is heating or cooling the power battery, due to the dense arrangement of single cells in the power battery, the heat accumulated in the middle area must be more, while the heat in the edge area must be less, which will lead to each unit of the pow...

Claims

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Application Information

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IPC IPC(8): H01M10/617H01M10/625H01M10/6567H01M10/633
CPCY02E60/10
Inventor 王剑鹏
Owner NEUSOFT REACH AUTOMOTIVE TECH SHANGHAI CO LTD
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