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Battery system and application method thereof

A battery system and battery technology, applied in the manufacture of lithium batteries, battery pack components, electrolyte batteries, etc., can solve problems such as prevention and control of thermal runaway hazards of faulty cells

Active Publication Date: 2021-03-30
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a battery system and its application method for the problem that the traditional battery system is difficult to prevent and control the thermal runaway hazard of the faulty cell

Method used

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  • Battery system and application method thereof
  • Battery system and application method thereof
  • Battery system and application method thereof

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Embodiment Construction

[0053] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0054] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected ...

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Abstract

The invention relates to a battery system, which includes a casing, a separator with a plurality of vent holes and a plurality of sealing bodies, and a plurality of battery cells with safety valves. The housing encloses a receiving space. The separator is arranged in the casing, and divides the containing space into a battery area and an isolation area. The plurality of ventilation holes are opened on the surface of the separator. Each of the sealing bodies closes one of the ventilation holes. The plurality of battery cells are disposed in the battery area, and each of the battery cells is disposed opposite to one of the vent holes. The safety valve is arranged on the surface of the battery cell and opposite to the vent hole. When the battery cells are thermally out of control, the sealing body is washed away, and the ejecta enters the isolation area. The separator can isolate the eruption of the battery cell from other battery cells that are not out of control, reduce the possibility of thermal runaway propagation, greatly improve the safety of the battery module, and reduce potential safety hazards.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery system and an application method thereof. Background technique [0002] In recent years, the market share of electric vehicles has steadily increased. Lithium-ion batteries have excellent performances such as high voltage, high specific energy, long cycle life, and no pollution to the environment. They have attracted great attention from the electric vehicle industry and have gained certain applications. However, the thermal runaway process of lithium-ion batteries will cause the electrolyte to evaporate to form electrolyte vapor and generate flammable gas mixtures, such as H 2 , CO, CH 4 etc., and accumulate inside the battery. After the battery reaches a certain pressure limit, the safety valve opens, and the combustible mixture is released into the external environment as the battery erupts. During the eruption process of the battery, the surface temperature of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/30H01M10/052H01M10/058H01M10/42H01M10/52
CPCH01M10/052H01M10/058H01M10/42H01M10/52H01M50/30Y02E60/10Y02P70/50
Inventor 李成王贺武欧阳明高李伟峰张亚军李建秋卢兰光韩雪冰杜玖玉
Owner TSINGHUA UNIV
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