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CN-224232696-U - Battery device and electricity utilization device

CN224232696UCN 224232696 UCN224232696 UCN 224232696UCN-224232696-U

Abstract

The application relates to the technical field of batteries, and provides a battery device and an electric device. The battery device comprises a battery box, a plurality of battery cells and a temperature control assembly, wherein the battery box is limited with a containing cavity, the battery cells are contained in the containing cavity, the temperature control assembly comprises at least one thermal control gasket, at least one thermal control gasket is arranged between two adjacent battery cells and is provided with a first state and a second state, the thermal control gasket is used for absorbing heat of the battery cells, the thermal control gasket is configured to be capable of being converted into the second state from the first state when the temperature reaches a first preset temperature threshold value, and is converted into the first state from the second state when the temperature is lower than the first preset temperature threshold value, and the thermal conductivity coefficient of the thermal control gasket in the first state is larger than that of the thermal control gasket in the second state. By the technical scheme, the risk of thermal runaway of the battery device can be reduced, and the stability and the safety of the battery device in use can be improved.

Inventors

  • XU FEILONG
  • YIN QIAO

Assignees

  • 江苏时代新能源科技有限公司

Dates

Publication Date
20260512
Application Date
20250114

Claims (11)

  1. 1. A battery device, characterized by comprising: a battery box defining a receiving cavity; a plurality of battery cells accommodated in the accommodating cavity; The temperature control assembly comprises at least one thermal control gasket, at least one thermal control gasket is arranged between two adjacent battery monomers, the thermal control gasket is provided with a first state and a second state, the thermal control gasket is used for absorbing the heat of the battery monomers, and is configured to be converted from the first state to the second state when the temperature reaches a first preset temperature threshold value and from the second state to the first state when the temperature is lower than the first preset temperature threshold value, The thermal conductivity coefficient of the thermal control gasket in the first state is larger than that of the thermal control gasket in the second state.
  2. 2. The battery device of claim 1, wherein the temperature control assembly further comprises a cooling assembly disposed between two adjacent battery cells, and wherein the opposite sides of the cooling assembly are respectively provided with one of the thermal control gaskets, Wherein the cooling assembly is configured to absorb heat if the temperature reaches a second preset temperature threshold, the second preset temperature threshold being greater than the first preset temperature threshold.
  3. 3. The battery device of claim 2, wherein the cooling assembly comprises: a housing defining an accommodation space, the surface of the housing being provided with a through hole; The first heat absorbing piece is arranged in the accommodating space and is configured to absorb heat when the temperature reaches the second preset temperature threshold value.
  4. 4. The battery device of claim 3, wherein the cooling assembly further comprises: The partition piece is arranged in the accommodating space and divides the accommodating space into a first accommodating space and a second accommodating space, and the first heat absorbing piece is accommodated in the first accommodating space; A second heat absorbing member accommodated in the second accommodating space, the second heat absorbing member configured to absorb heat when a temperature is greater than a third preset temperature threshold, Wherein the third preset temperature threshold is greater than the second preset temperature threshold.
  5. 5. The battery device according to claim 4, wherein the partition is configured to be deformable to conduct the first accommodation space and the second accommodation space in a case where the temperature reaches the third preset temperature threshold.
  6. 6. The battery device of claim 4, wherein there is a gap between the housing and the first heat sink and/or a gap between the housing and the second heat sink.
  7. 7. The battery device of claim 4, wherein the first heat absorbing member comprises a first package body having a plurality of first adsorption holes filled with a first phase change material; And/or the second heat absorbing member comprises a second package body, the second package body is provided with a plurality of second adsorption holes, and the second adsorption holes are filled with second phase change materials.
  8. 8. The battery device according to any one of claims 1 to 6, wherein the temperature control assembly further comprises a heating member provided between the bottom plate of the battery box and the plurality of the batteries and/or between the plurality of the battery cells and the side plate of the battery box for heating the plurality of the battery cells.
  9. 9. The battery device of claim 8, wherein the temperature control assembly further comprises a control device and a plurality of temperature sensors, the control device being electrically connected to the heating element and the plurality of temperature sensors, wherein each of the battery cells is provided with at least one of the temperature sensors.
  10. 10. The battery device of any one of claims 1-6, wherein the thermal control pad comprises a thermoplastic resin pad.
  11. 11. An electrical device comprising a battery device according to any one of claims 1-10 for powering the electrical device.

Description

Battery device and electricity utilization device Technical Field The application relates to the technical field of batteries, in particular to a battery device and an electricity utilization device. Background This section provides merely background information related to the present disclosure and is not necessarily prior art. Currently, with the rapid development of new energy automobiles, battery devices are increasingly coming into the public view. Wherein, there are one or more battery cells in the battery device, and the temperature of the battery cells is an important parameter affecting the service performance of the battery cells during the working process, and if the temperature of the battery cells rises sharply, there is a risk of fire or explosion caused by thermal runaway. Disclosure of utility model The application aims to provide a battery device and an electric device, which are used for improving the use stability of the battery device. The aim is achieved by the following technical scheme: In a first aspect, the application provides a battery device, which comprises a battery box, a plurality of battery cells and a temperature control assembly, wherein the battery box is limited with a containing cavity, the battery cells are contained in the containing cavity, the temperature control assembly comprises at least one thermal control gasket, at least one thermal control gasket is arranged between two adjacent battery cells, the thermal control gasket is provided with a first state and a second state and is used for absorbing heat of the battery cells so as to cool the battery cells, the thermal control gasket is configured to be capable of being converted from the first state to the second state under the condition that the temperature reaches a first preset temperature threshold value, and is converted from the second state to the first state under the condition that the temperature is lower than the first preset temperature threshold value, and the thermal conductivity of the thermal control gasket in the first state is larger than that of the thermal control gasket in the second state. According to the battery device provided by the application, at least one thermal control gasket is arranged between two adjacent battery monomers, the battery monomers can generate heat and the temperature of the battery device can be gradually increased in the use process, at the moment, the thermal control gasket can reduce the temperature of the battery monomers by absorbing the heat generated by the two adjacent battery monomers, the temperature of the thermal control gasket can be converted from a first state to a second state under the condition that the temperature reaches a first preset threshold value, the thermal conductivity of the thermal control gasket is reduced in the second state, the temporary heat insulation effect is achieved, the thermal control gasket can play a certain role in resisting heat, the transmission of the heat between the battery monomers is slowed down, the risk of thermal runaway of the battery device is further reduced, the risk of fire or explosion of the battery device is reduced, and the use stability and safety of the battery device are improved. In addition, the battery device provided by the application can also have the following additional technical characteristics: In some embodiments of the present application, the temperature control assembly further includes a cooling assembly disposed between two adjacent battery cells, and the opposite sides of the cooling assembly are respectively provided with one of the thermal control pads, wherein the cooling assembly is configured to absorb heat when the temperature reaches a second preset temperature threshold, and the second preset temperature threshold is greater than the first preset temperature threshold. In the above technical scheme, be equipped with two thermal control gaskets between two adjacent battery monomer, still be provided with cooling module between two thermal control gaskets, cooling module can absorb heat under the condition that the temperature is higher than first temperature threshold value of predetermineeing and reaches the second temperature threshold value of predetermineeing to can realize the temperature between the hierarchical regulation and control battery monomer, with absorb heat under the unable further endothermic condition of thermal control gasket, and then can realize the hierarchical regulation and control battery monomer temperature, and further reduce battery device because of taking place thermal runaway's risk, further improved battery device stability and security that uses. In some embodiments of the application, the cooling assembly comprises a shell, a first heat absorbing member and a second heat absorbing member, wherein the shell is limited with an accommodating space, the surface of the shell is provided with a through hole, and the first heat absorbing member is