Thermal management system for power battery of pure electric vehicle

A thermal management system, pure electric vehicle technology, applied in the field of pure electric vehicle power battery thermal management system, can solve problems such as constant temperature or temperature fluctuation is difficult to achieve, heat accumulation cannot be effectively released, and liquid fluidity control requirements are high. Achieve the effect of improving charge and discharge efficiency, simple structure, and good heat dissipation effect

Inactive Publication Date: 2016-07-27
ZHENGZHOU BIKE NEW ENERGY AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly the following types of thermal management technologies for power batteries at home and abroad: complete air cooling, which is the simplest method, but it cannot control the sudden rise and fall of the ambient temperature, and is basically not recommended in the industry; the air temperature is controlled by the compressor , to keep the temperature of the battery stable through air flow. Although this scheme is not very accurate, it can achieve auxiliary heating and cooling. In some schemes, substances with high heat conduction such as silicone oil are attached to the surface of the battery to enhance the efficiency of conduction. However, it is difficult to achieve constant temperature or stabl...

Method used

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  • Thermal management system for power battery of pure electric vehicle
  • Thermal management system for power battery of pure electric vehicle
  • Thermal management system for power battery of pure electric vehicle

Examples

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Embodiment 1

[0024] Embodiment two, see Figure 1~8 As shown, it is basically the same as the first embodiment, the difference is that the heat-conducting silicone tube is a profile-type tube made of polymer elastic material, and the profile-type tube is provided with multiple parallel lumens, see Figure 4 and Figure 5 As shown, according to actual use requirements, the inner cavity can have an elliptical or circular cross-section.

[0025] As mentioned above, the heat-conducting silicone hose belt is a profile-type hose belt made of special silicone rubber material, which has excellent high temperature resistance (250-300°C) and low temperature resistance (-40-60°C) performance, and has good Physiological stability, excellent resilience and small permanent deformation (less than 50% in 48 hours at 200°C), breakdown voltage (20-25KV / mm), ozone resistance, UV resistance, radiation resistance, oil resistance, The pipe tape is soft, and high thermal conductivity silicone pipe tape can be ...

Embodiment 2

[0026] As mentioned above, the combined reducing joint includes fixed tailstock 1 and fixed tailstock 2, the pipe belt joint is fixedly connected with fixed tailstock 1, the outer circulation pipe joint is fixedly connected with fixed tailstock 2, fixed tailstock 1 and fixed tailstock The second is sealed and connected through fasteners, and the tailstock is fixed; the second is fixed to the battery module shell through bolts.

[0027] As mentioned above, there is an O-shaped sealing ring between the fixed tailstock 1 and the fixed tailstock 2. The fixed tailstock 1 and the fixed tailstock 2 are integrated structures. Variable-diameter sealing connection, good sealing effect, avoid foreign matter, dust, etc. from entering, safety and reliability are further guaranteed.

[0028] Working principle: The coolant is stored by the radiator 101, and through the external circulation pipeline 108, it passes through the two-position three-way solenoid valve 102, the coolant filter 103, ...

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Abstract

The invention relates to a thermal management system for a power battery of a pure electric vehicle. The thermal management system comprises a battery module, a radiator, a magnetic pump, an external circulating pipeline, a heat exchange element, a heater, a temperature sensor and a central controller, wherein the heat exchange element is a heat-conducting silicone tube tape of which an inner cavity is filled with a cooling liquid; the heat-conducting silicone tube tape is attached to a single battery; the external circulating pipeline is sequentially connected with the heater and a decompression valve in parallel through a two-position three-way electromagnetic valve; the external circulating pipeline between the heater and the decompression valve is sequentially connected with a cooling liquid filter and the magnetic pump in series; the external circulating pipeline is communicated with the heat-conducting silicone tube tape through a composite variable-diameter joint; and the heat-conducting silicone tube tape is also provided with an electromagnetic directional valve. The thermal management system is simple in structure, novel in design, high in heat exchange efficiency, good in heat dissipation effect, safe and reliable to use, relatively economical and practical and good in sealing effect; and the lifetime of the power battery is further prolonged; and the charge-discharge efficiency of the power battery is further improved.

Description

technical field [0001] The invention relates to the field of pure electric vehicle power batteries, in particular to a pure electric vehicle power battery thermal management system. Background technique [0002] Battery Electric Vehicle (BEV) is an indispensable means of transportation for the cleanest, most efficient and sustainable development of our 21st century. The development of pure electric vehicles is an inevitable trend, because it can use electric energy generated by sustainable energy sources, such as lithium batteries, or hydrogen fuel cells, etc., are some sustainable energy sources. The research and development of pure electric vehicles involves many technical fields, covering a wide range and is also very complicated. But in the final analysis, how to make the performance of the power battery fully play is a recognized technical difficulty. To overcome this difficulty, we must See how to create a stable and suitable working environment for the power battery,...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/615H01M10/6567H01M10/6557H01M10/625
CPCH01M10/613H01M10/615H01M10/625H01M10/6557H01M10/6567Y02E60/10
Inventor 王勇孙文彬
Owner ZHENGZHOU BIKE NEW ENERGY AUTOMOBILE
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