Flow sharing device and method of battery energy storage liquid cooling system

A battery energy storage and liquid cooling technology, which is applied in the direction of batteries, secondary batteries, battery pack components, etc., can solve the problems of different flow rates of coolant, unsatisfactory temperature uniformity effect of parallel systems, and unequal inlet head pressure, etc., to achieve Improved standardization, simple and easy implementation process, and extended service life

Active Publication Date: 2017-11-28
JING JIN ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The advantage of this system is that it can ensure that the coolant inlet temperature of each module is consistent T1=T1=T3=...=Tn, but the flow of coolant entering each module is affected by the resistance of the pipeline, the height of the module's placement in the vehicle, and the Influenced by factors such as group differences, it will lead to unequal inlet head pressure and different coolant flow rate, so α1>α2>α3>…>αn, so Φ1>Φ2>Φ3>…>Φn, it can be seen that the average temperature of the parallel system The effect is not ideal

Method used

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  • Flow sharing device and method of battery energy storage liquid cooling system
  • Flow sharing device and method of battery energy storage liquid cooling system
  • Flow sharing device and method of battery energy storage liquid cooling system

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Embodiment 1

[0047] Such as image 3 , Figure 4 , Figure 5 Shown is Embodiment 1 of the present invention. In this embodiment, a battery energy storage liquid cooling system current sharing device includes several sets of battery modules arranged side by side, namely module 1, module 2, module 3, ..., module n, each group of battery modules is connected to a liquid cooling system, and is provided with a cooling liquid input port 4, a throttle tube 3 is provided in the input port 4, and a throttle hole 3 is provided on the throttle tube 3- 1. Adjust the coolant entering the input port 4 to equal pressure through the throttling tube 3.

[0048] When the coolant pressure is equal, the coolant flow rate and flow rate will tend to be equal, the convective heat transfer coefficient α will tend to be equal, and the convective heat transfer rate Φ will tend to be equal.

[0049] In this embodiment, the inlet 4 and the cooling liquid pipeline are made separately; the throttle tube 3 and the in...

Embodiment 2

[0062] Embodiment 2 of the present invention is an improvement made on the basis of Embodiment 1. The difference between Embodiment 2 of the present invention and Embodiment 1 is that the throttling tube 3 is provided with a latch or a slot, and on the inner wall of the input port 4 A card slot or a card shoot is provided, and the throttle tube 3 and the input port 4 are assembled together by card connection.

[0063] After the throttling tube 3 is inserted into the input port 4, the two can be assembled together by welding or bonding.

[0064] Welding or bonding can be used as an auxiliary means of strengthening the connection technology, or welding or bonding can be used alone.

[0065] Other contents of Embodiment 2 of the present invention are the same as Embodiment 1, and will not be described again here.

Embodiment 3

[0067] Embodiment 3 of the present invention is an improvement made on the basis of Embodiment 1. The difference between Embodiment 3 of the present invention and Embodiment 1 is that the inlet 4 and the cooling liquid pipeline are integrally made, and the throttle tube 3 and the inlet 4 made in one piece.

[0068] If the inlet port 4 and the coolant pipeline are integrally formed, it is better to make the throttle tube 3 and the inlet port 4 integrally at the same time, so as to save the trouble of installing the throttle tube 3 later.

[0069] If the throttling tube 3 and the input port 4 are made integrally, then the input port 4 and the cooling liquid pipeline can also be made separately, because it is still very convenient to install the input port 4 in the later stage.

[0070] In Embodiment 1, different types of throttling tubes 3 need to be selected, and in this embodiment, different types of input ports 4 or different types of liquid cooling system pipes need to be se...

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Abstract

The invention discloses a flow sharing device of a battery energy storage liquid cooling system, and solves the technical problems of non-ideal temperature equalization effect of the battery liquid cooling system in the prior art. The flow sharing device of the battery energy storage liquid cooling system comprises a plurality of groups of battery modules in parallel; each group of battery module is connected with the liquid cooling system and is provided with a cooling liquid input opening; a throttling pipe is arranged in the input opening; throttling holes are formed in the throttling pipe; the pressure of cooling liquid entering the input openings is regulated to be equal through the throttling pipe. The flow sharing device has the advantages that the liquid cooling system can more uniformly distribute cooling liquid flow among battery sub packs or modules, so that the battery system can be enabled to work at a more consistent environment temperature; the performance difference of the modules is reduced; the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a flow equalization device for a battery energy storage liquid cooling system, which is respectively connected to each battery pack or module and the liquid cooling system through a cooling liquid pipe, and is used to more evenly distribute the cooling liquid inside the battery pack or module traffic. The invention also relates to a flow equalization method for a battery energy storage liquid cooling system. Background technique [0002] Among various energy storage technologies, lithium-ion batteries have gradually become the best choice for industrial and vehicle energy storage devices due to their high energy density characteristics and high commercialization prospects. However, the performance of a large-capacity, high-power energy storage battery system is sensitive to temperature changes. The long-term high and low temperature environment and the accumulation of temperature differences in the system will affect the life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/617H01M10/625H01M10/6556H01M10/6568
CPCH01M10/613H01M10/617H01M10/625H01M10/6556H01M10/6568Y02E60/10H01M50/20H01M2220/20
Inventor 韩振亚
Owner JING JIN ELECTRIC TECH CO LTD
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