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Pipeline, system, battery shell and method for controlling temperature of battery pack

A technology for controlling pipelines and battery packs. It is applied in the field of systems, pipelines for controlling the temperature of battery packs, and battery shells. It can solve the problems of no cooling effect for batteries, different cooling water flow rates, and complicated manufacturing processes, etc., to achieve sealing Good performance, small length difference, and the effect of avoiding liquid leakage

Pending Publication Date: 2020-09-15
TAIZHOU HUANGYAN SHUANGSHENG PLASTIC MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Option two (such as figure 1 Shown): Aluminum plates (harmonica tubes) with multiple holes inside are used, and the two ends are welded together with the cooling channel connecting device as a group and placed under each battery module. Multiple sets of cooling lines are connected in parallel through the joints and the main tube This method will cause the flow of cooling water in each area to be different, and the battery at the end of the cooling water circulation may not get a good cooling effect
[0006] In addition, these two methods have a welding process, the production process is complicated, there are many tooling, and there are many welding points
The vehicle is running bumpy, and the welding points are in such a state for a long time, it is inevitable to loosen and there is a risk of leakage

Method used

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  • Pipeline, system, battery shell and method for controlling temperature of battery pack
  • Pipeline, system, battery shell and method for controlling temperature of battery pack
  • Pipeline, system, battery shell and method for controlling temperature of battery pack

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The invention provides a pipeline for controlling the temperature of the battery pack, such as Figure 2-6 As shown, the battery pack 1 includes at least two batteries arranged in an array. Specifically, a plurality of batteries are arranged in two rows or side by side in a rectangular shape.

[0053] The pipeline 2 includes at least two square flat tubes 21 arranged in parallel. Each square flat tube 21 is a steel pipe integrally formed. The square flat tubes 21 are bent into a labyrinth. The flow direction of the incoming liquid is opposite, the pipeline 2 is close to the upper surface of the battery, or / and the lower surface, or / and the side, and the liquid is introduced into the pipeline 2. By controlling the temperature of the liquid, the liquid passes through the square flat tube 21 to the battery pack. 1. Cooling or heat preservation (heating).

[0054] Adopting the square flat tube 21, on the one hand, can increase the contact area between the pipeline 2 and the...

Embodiment 2

[0080] A system for controlling the temperature of a battery pack, the system includes the pipeline 2 in Embodiment 1, the system also includes a temperature sensor and a controller, the temperature sensor and the controller are electrically connected, and the temperature sensor is installed on the surface of the battery for Monitor the temperature of the battery surface and transmit the temperature signal to the controller.

[0081] The controller is used to receive the temperature signal, and control the liquid in the pipeline 2 to heat up or cool down according to the preset temperature.

[0082] Specifically, the system also includes a three-way valve, a pump, a heater, a heat exchanger and an expansion kettle.

[0083] The controller is electrically connected with the three-way valve, and controls the three interfaces of the three-way valve to close or open.

[0084] The three-way valve includes a main flow interface, a heat exchange branch flow interface and a heating b...

Embodiment 3

[0090] A battery case used to control the temperature of the battery pack, such as Figure 8-13 As shown, the battery case body 4 is included, and the battery case body 4 is a rectangular case whose upper part is not closed.

[0091] The battery case also includes the system in Example 2.

[0092] The water distribution tank 3 is installed on the outside of the battery case body 4 .

[0093] Specifically, the water distribution tank 3 and the battery case body 4 are connected by bolts, the water distribution tank 3 is provided with a plurality of bolt through holes, and threaded holes are provided at corresponding positions of the battery case body 4, and the bolts pass through the threaded holes of the water distribution tank 3 It is connected with the threaded hole of the battery case body 4 , and the bolt locking direction is consistent with the inflow interface 36 and the outflow interface 37 , which ensures the reliability of the connection between the water distribution...

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Abstract

The invention discloses a pipeline, a system, a battery shell and a method for controlling the temperature of a battery pack. The pipeline comprises at least two integrated square flat pipes arrangedin parallel, the flow directions of liquid in every two adjacent square flat pipes are opposite, the pipeline is tightly attached to the upper surface or / and the lower surface or / and the side face ofa battery, the temperature of the liquid in the pipeline is controlled, and the battery pack is cooled or subjected to heat preservation. The square flat pipe is divided into a front-section flat pipeand a rear-section flat pipe, the front-section flat pipe and the rear-section flat pipe are bent into n shapes which are sequentially connected, and the front-section flat pipe and the rear-sectionflat pipe are symmetrically arranged. In the pipeline, each square flat pipe is an integrally-formed steel pipe, the sealing performance of the whole pipeline is good, and therefore liquid leakage inthe pipeline can be effectively avoided.

Description

technical field [0001] The invention belongs to the field of energy technology, and in particular relates to a pipeline, a system, a battery case and a method for controlling the temperature of a battery pack. Background technique [0002] The high-voltage battery is the core component of an electric vehicle and the power source of the vehicle. It usually consists of multiple battery modules and is installed inside the battery case. Based on the characteristics of the high-voltage battery, its operating temperature must be maintained in a specific range to ensure that the ideal life of indicators such as capacity and number of charging cycles can be optimized. Changes in the external ambient temperature, such as high temperature in summer and low temperature in winter, or the battery being in working condition for a long time, will affect the temperature of the battery. In summer, the temperature of the battery is too high, the internal expansion of the battery, and the bum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/615H01M10/617H01M10/625H01M10/63H01M10/635H01M10/6556H01M10/6567H01M2/10
CPCH01M10/613H01M10/615H01M10/617H01M10/625H01M10/63H01M10/635H01M10/6556H01M10/6567Y02E60/10
Inventor 李加春
Owner TAIZHOU HUANGYAN SHUANGSHENG PLASTIC MOLD