CN-224232869-U - Battery pack and electric equipment

Abstract

The embodiment of the application provides a battery pack and electric equipment. The battery pack comprises a battery core and a protection plate, wherein the battery core is provided with a safety valve, electrolyte is arranged in the battery core, the protection plate is opposite to the safety valve, and a plurality of ventilation holes are formed in the protection plate and used for allowing gas to pass through and blocking at least part of solid matters. The battery pack is used for achieving the effects of blocking eruption and improving the safety of the battery pack.

Inventors

• XU JIAJIA
• TONG BANG
• CAO MINGWEI
• TAO ZEYUAN

Assignees

• 合肥国轩高科动力能源有限公司

Dates

Publication Date

20260512

Application Date

20250415

Claims (10)

1. 1. A battery pack, comprising: The battery cell is provided with a safety valve, and electrolyte is arranged in the battery cell; the protection plate is opposite to the safety valve, and is provided with a plurality of ventilation holes for allowing gas to pass through and blocking at least part of solid matters.
2. 2. The battery pack of claim 1, wherein the battery pack further comprises: The adsorption piece is arranged on one side, facing the battery cell, of the protection plate, is opposite to the safety valve, and is used for allowing the gas to pass through and adsorbing the electrolyte.
3. 3. The battery pack of claim 2, wherein the battery pack further comprises: The heat insulation piece is arranged between the adjacent electric cores and is connected with the protection plate.
4. 4. The battery pack according to claim 3, wherein the heat insulating member is made of ceramic fiber cotton or aerogel; And/or the adsorption piece is adhered with the protection plate or the heat insulation piece.
5. 5. The battery pack according to claim 2, wherein the material of the absorbing member is ceramic fiber cotton or aerogel; and/or the absorbing member is bonded to the protection plate.
6. 6. The battery pack according to claim 2, wherein the adsorption member is flush with an outer circumferential surface of the protection plate.
7. 7. The battery pack according to any one of claims 1 to 6, wherein the protection plate has a net shape, and the ventilation holes are net holes.
8. 8. The battery pack according to claim 7, wherein the mesh holes have a diameter of 1mm to 10mm, and the space between the mesh holes is 1mm to 10mm.
9. 9. The battery pack of any one of claims 1-6, wherein the shielding plate is a mica plate or a vacuum insulation panel.
10. 10. A powered device comprising a battery pack according to any one of claims 1-9.

Description

Battery pack and electric equipment Technical Field The application relates to the technical field of new energy, in particular to a battery pack and electric equipment. Background With the development of science and technology and the continuous rising of energy demands, new energy vehicles are rapidly developed. The lithium ion battery is widely applied to new energy vehicles because of the advantages of long cycle life, low quality, no memory and the like. However, when the internal energy of the lithium ion battery is released in an abnormal form, the battery may undergo thermal runaway. When the battery is in thermal runaway, severe temperature rise can be generated, and a large amount of combustible gases such as electrolyte vapor, hydrogen, carbon monoxide and the like are sprayed, and even the internal electrode material, so that when the battery in thermal runaway is contacted with oxygen, the combustion phenomenon is extremely easy to occur. In addition, the sprayed electrode material has extremely high temperature, and other materials can be burnt or short-circuited in the battery due to splashing in the battery, so that the thermal runaway diffusion of the battery is induced, and the life safety and property loss of people are seriously threatened. The protection effect of the thermal runaway of the battery is poor, and a protection mode for effectively controlling the thermal runaway eruption of the battery is needed. Disclosure of utility model The embodiment of the application provides a battery pack and electric equipment, which are used for achieving the effect of effectively controlling thermal runaway eruption of a battery. In a first aspect, an embodiment of the present application provides a battery pack, including: The battery cell is provided with a safety valve, and electrolyte is arranged in the battery cell; the protection plate is opposite to the safety valve, and is provided with a plurality of ventilation holes for allowing gas to pass through and blocking at least part of solid matters. In some possible embodiments, the battery pack further comprises: The adsorption piece is arranged on one side, facing the battery cell, of the protection plate, is opposite to the safety valve, and is used for allowing the gas to pass through and adsorbing the electrolyte. In some possible embodiments, the battery pack further comprises: The heat insulation piece is arranged between the adjacent electric cores and is connected with the protection plate. In some possible embodiments, the heat insulation member is made of ceramic fiber cotton or aerogel; And/or the adsorption piece is adhered with the protection plate or the heat insulation piece. In some possible embodiments, the material of the absorbing member is ceramic fiber cotton or aerogel; and/or the absorbing member is bonded to the protection plate. In some possible embodiments, the adsorbing member is flush with an outer peripheral surface of the shielding plate. In some possible embodiments, the protection plate is net-shaped, and the ventilation holes are net holes. In some possible embodiments, the diameter of the mesh is 1mm to 10mm, and the spacing between the meshes is 1mm to 10mm. In some possible embodiments, the shield is a mica board or a vacuum insulation panel. In a second aspect, an embodiment of the present application provides an electronic device including a battery pack as described above. The battery pack and the electronic equipment provided by the embodiment of the application comprise a battery core and a protection plate, wherein the battery core is provided with a safety valve, electrolyte is arranged in the battery core, the protection plate is provided with a plurality of ventilation holes, the ventilation holes are opposite to the safety valve, and the ventilation holes are used for allowing gas to pass through and blocking at least part of solid matters. Through setting up the guard plate, and the bleeder vent of guard plate is relative with the relief valve, can carry out certain blocking to the eruption thing, the solid thing of separation large granule. Therefore, the damage of solid matters to nearby structures can be reduced, secondary damage of the eruption matters to the inside of the battery pack is prevented, thermal runaway diffusion of the battery pack is reduced, and the safety of the battery pack is improved. And moreover, the protection plate has the advantages of simple structure, low process cost, strong operability and better protection effect. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. Fig. 1 is an exploded view of a battery module according to the present application; fig. 2 is an overall schematic view of a battery module provided by the present application; fig. 3 is a top view of a ba