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Battery safety protection device

A protection device and battery safety technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems that restrict the use and development of lithium batteries, and achieve the effect of preventing thermal runaway and avoiding fire and combustion

Active Publication Date: 2015-07-08
DONGGUAN YIDONG NEW ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the safety of large-capacity lithium-ion batteries not only restricts the development of lithium battery technology, but also seriously restricts the application of lithium batteries in pure electric vehicles.

Method used

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Examples

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Embodiment 1

[0021] Such as figure 1 The battery safety protection device shown includes a battery box 1 and a storage container 2 that stores a cooling agent outside the battery box 1. In this embodiment, the battery box 1 is a sealed box made of stainless steel (in figure 1 In order to clearly show the internal structure of the present invention, one side of the sealed box is not shown), and more than one battery 3 or battery pack is fixed in series in the sealed cavity of the battery box 1, and the battery box 1 is connected to the stored storage through the metal connection pipe 4. The cooling agent storage container 2 is connected, and the part of the connecting pipe 4 located in the battery box 1 is provided with more than one starting device 41 .

[0022] The starting device 41 is used to open the connecting pipe 4 so that the cooling agent in the storage container 2 enters the battery box 1 . In this embodiment, the starting device 41 adopts a hot-melt switch, and the hot-melt swi...

Embodiment 2

[0028] Such as figure 2 As shown, in this embodiment, the storage container 2 is arranged in the battery box 1, so that maintenance personnel can replace it as a whole. Other parts in this embodiment are the same as those in Embodiment 1, and will not be described in detail here.

[0029] The working principle of the present invention is as follows: during use, when a battery 3 or a battery pack is short-circuited, the released heat will cause the temperature in the battery box 1 to rise, and when the temperature is higher than the melting of the thermal plug head 5 When the temperature is high, the hot-melt plug head 5 melts, and the liquid CO in the storage container 2 2 Will quickly enter the battery box 1, liquid CO 2 During the vaporization process, a large amount of heat is absorbed so that the temperature in the battery box 1 drops, thereby effectively preventing thermal runaway and preventing the battery 3 from catching fire.

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Abstract

The invention relates to the technical field of battery protection, and especially relates to a battery safety protection device used for preventing combustion due to battery ouverheating and out of control; the device comprises a battery case, and a storage container storing a cooling agent; the battery case is used for accommodating more than one battery; the battery case is connected with the storage container through a connecting pipeline; more than one starting device is disposed on a part of the connecting pipeline in the battery case; A battery or a battery pack is disposed in the battery case; the battery case is communicated with the storage container filled with the cooling agent through the connecting pipeline; the starting device is disposed on the connecting pipeline; when a certain battery is short-out, the released heat can increase the temperature in the battery case, and thus the starting device is turned on; the cooling agent in the storage container enters into the battery case to decrease the temperature in the battery case; therefore thermal out of control can be prevented effectively, and fire breaking out and combustion of the battery are prevented.

Description

technical field [0001] The invention relates to the technical field of battery protection, in particular to a battery safety protection device, which is used to prevent the battery from burning due to overheating and runaway. Background technique [0002] As an important part of renewable energy and new energy, batteries will play a vital role. Since the successful development of lithium batteries, they have been widely used due to their advantages of high working voltage, high specific energy, long cycle life, low self-discharge rate, and no pollution. [0003] The traditional lithium battery is mainly used for electronic products such as IT and communication, and its capacity is small, and the technology is quite mature; in order to cooperate with new energy and energy storage applications, the capacity of the lithium battery needs to be enlarged, and the enlarging battery capacity will follow It is the safety issue of the product. For example, a 4.2V lithium battery with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/613H01M10/635H01M10/6568
CPCY02E60/10
Inventor 吴震
Owner DONGGUAN YIDONG NEW ENERGY TECH
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