Heat absorption structure, battery pack and electric equipment

Abstract

The utility model discloses a heat absorption structure, a battery pack and electric equipment, and the heat absorption structure comprises a heat absorption body, a heat absorption layer and a heat conduction layer, the liquid supplementing body is arranged in the heat absorbing body, the liquid supplementing body is provided with a liquid outlet communicated with the heat absorbing body and a liquid inlet communicated with the outside, and the liquid supplementing body is used for supplementing phase change materials to the heat absorbing body. The liquid supplement body is arranged in the heat absorption body, so that the liquid supplement body can continuously provide the phase change material for the heat absorption body, and the heat absorption performance of the heat absorption structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation, in particular to a heat absorption structure, a battery pack and an electrical equipment. Background Art

[0002] In the related art, in order to effectively suppress the heat diffusion effect of a thermally out-of-control battery cell, a method of adding a heat insulation material such as aerogel between battery cells is mostly adopted. However, it does not absorb a large amount of heat generated by the thermally out-of-control battery cell, nor can it prevent the heat generated by the out-of-control battery cell from being transferred to adjacent battery cells through other components, and it does not consume or transfer the remaining heat of the battery cell. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a heat absorption structure. By arranging a replenishing liquid inside the heat absorber, the replenishing liquid can continuously provide a phase change material for the heat absorber, thereby improving the heat absorption performance of the heat absorption structure.

[0004] The heat absorption structure according to the first aspect embodiment of the utility model includes: a heat absorber capable of absorbing heat by phase change; a replenishing liquid arranged inside the heat absorber, the replenishing liquid being provided with a liquid outlet communicating with the heat absorber and a liquid inlet communicating with the outside, and the replenishing liquid being used for replenishing the phase change material to the heat absorber.

[0005] According to the heat absorption structure of the embodiment of the utility model, by arranging a replenishing liquid inside the heat absorber, the replenishing liquid can continuously provide a phase change material for the heat absorber, thereby improving the heat absorption performance of the heat absorption structure.

[0006] According to some embodiments of the utility model, the replenishing liquid is provided with microchannels having the liquid inlet and the liquid outlet for guiding the phase change material into the heat absorber.

[0007] According to some embodiments of the utility model, the microchannels are distributed in a vein-like network.

[0008] According to some embodiments of the utility model, the microchannels include: a primary flow channel penetratingly arranged in the replenishing liquid and having the liquid inlet at one end thereof; a plurality of secondary flow channels separately arranged on the periphery of the primary flow channel and communicating with the primary flow channel.

[0009] According to some embodiments of the utility model, the microchannels further include: a plurality of tertiary flow channels arranged between every two adjacent secondary flow channels, each tertiary flow channel communicating with the two adjacent secondary flow channels, and the liquid outlet being arranged on the tertiary flow channel and / or the secondary flow channel.

[0010] According to some embodiments of the present utility model, the three - stage flow channel includes a straight - flow part, both ends of the straight - flow part are respectively connected to two adjacent second - stage flow channels, and any one of two adjacent second - stage flow channels and the three - stage flow channel between the two adjacent second - stage flow channels form a first included angle, and the first included angle ≠ 90°.

[0011] According to some embodiments of the present utility model, the three - stage flow channel includes at least two straight - flow parts, the at least two straight - flow parts are connected in sequence, a second included angle is formed between two adjacent straight - flow parts, and the outermost ends of the at least two straight - flow parts away from each other are respectively connected to two adjacent second - stage flow channels.

[0012] According to some embodiments of the present utility model, the extending direction of the straight - flow part is formed in the same plane, and multiple three - stage flow channels are not communicated with each other.

[0013] According to some embodiments of the present utility model, for the three - stage flow channels located on the periphery of the first - stage flow channel, the opening directions of the second included angles all face the first - stage flow channel.

[0014] According to some embodiments of the present utility model, it further includes: a liquid storage tank, the liquid inlet is communicated with the liquid storage tank, and the liquid storage tank is used for storing phase - change materials.

[0015] According to some embodiments of the present utility model, it further includes: a packaging member, the packaging member covers the outer periphery of the heat absorber, and a packaging weak point is provided on the packaging member, and the packaging weak point is used for breaking under the action of force to allow the phase - changed phase - change material to be discharged from the packaging weak point after the heat absorber absorbs heat through phase change.

[0016] According to some embodiments of the present utility model, the heat absorber and the replenishing liquid are integrally formed.

[0017] According to some embodiments of the present utility model, the heat absorber is a phase - change material.

[0018] According to some embodiments of the present utility model, the heat absorber is a hydrogel.

[0019] According to the battery pack of the second - aspect embodiment of the present utility model, it includes: a plurality of battery cells and the heat - absorbing structure, and the heat absorber is arranged between two adjacent battery cells.

[0020] According to some embodiments of the present utility model, the phase - change boiling point of the heat absorber is above the normal working temperature of the battery pack.

[0021] According to the electrical equipment of the third - aspect embodiment of the present utility model, it includes: the battery pack.

[0022] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0023] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic structural diagram of a heat absorption structure and an electric core according to an embodiment of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the heat absorption structure according to an embodiment of the present utility model.

[0026] Reference Signs:

[0027] 1, heat absorber; 2, replenishing liquid; 3, microchannel; 301, primary flow channel; 302, secondary flow channel; 303, tertiary flow channel; 304, direct current part; 4, liquid storage tank; 5, encapsulation member; 501, encapsulation weak point; 6, electric core. Detailed Embodiments

[0028] Embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. Embodiments of the present utility model will be described in detail below.

[0029] Reference will be made below to Figure 1 - Figure 2 describe the heat absorption structure according to an embodiment of the present utility model.

[0030] As Figure 1 and Figure 2 shown, the heat absorption structure includes: a heat absorber 1 and a replenishing liquid 2. The heat absorber 1 can absorb heat through phase change. The replenishing liquid 2 is arranged inside the heat absorber 1. The replenishing liquid 2 is provided with a liquid outlet communicating with the heat absorber 1 and a liquid inlet communicating with the outside. The replenishing liquid 2 is used to supplement the phase change material for the heat absorber 1.

[0031] The heat absorber 1 is arranged on the functional component that needs to absorb heat. The phase change material in the heat absorber 1 rapidly cools the functional component through phase change heat absorption, reducing the temperature of the functional component. And when the phase change material in the heat absorber 1 undergoes a phase change, the content of the phase change material in the heat absorber 1 decreases. Therefore, in order to maintain the content of the phase change material in the heat absorber 1 or reduce the reduction rate of the phase change material in the heat absorber 1, by arranging the replenishing liquid 2 inside the heat absorber 1, making the liquid outlet communicate with the outside and the liquid inlet communicate with the heat absorber 1, the phase change material can be replenished for the heat absorber 1 in real time, thereby improving the overall heat absorption performance of the heat absorption structure.

[0032] Specifically, when the battery cell 6 undergoes thermal runaway, a large amount of heat is generated within the battery cell 6 in a short period of time, and at the same time, the temperature rises sharply. The phase change material within the water heat absorber 1 absorbs a large amount of heat from the battery cell 6 through phase change, significantly reducing the heat transferred from the thermally runaway battery cell 6 to the adjacent battery cells 6. When the phase change material within the heat absorber 1 undergoes a phase change and transforms into water vapor, the replenishing liquid 2 obtains the phase change material from the outside through the liquid inlet and replenishes the phase change material to the heat absorber 1 through the liquid outlet. Thus, the phase change material can be replenished to the heat absorber 1 in real time, thereby enhancing the overall heat absorption performance of the heat absorption structure during the thermal runaway of the battery cell 6, reducing the heat transferred from the thermally runaway battery cell 6 to the adjacent battery cells 6, and enhancing the ability to suppress thermal diffusion.

[0033] Therefore, according to the heat absorption structure of the present utility model, by arranging the replenishing liquid 2 inside the heat absorber 1, the replenishing liquid 2 can continuously provide the phase change material for the heat absorber 1, thereby improving the heat absorption performance of the heat absorption structure and further enhancing the ability to suppress thermal diffusion.

[0034] Furthermore, the replenishing liquid 2 is provided with microchannels 3. The microchannels 3 have a liquid inlet and a liquid outlet and are used to divert the phase change material into the heat absorber 1. With such an arrangement, the phase change material can be diverted to various places within the heat absorber 1 through the microchannels 3, further reducing the reduction rate of the phase change material within the heat absorber 1.

[0035] It can be understood that the microchannels 3, as the pipelines for transporting the phase change material to the heat absorber 1, have a structure similar to that of a capillary tube. When the heat absorber 1 absorbs the phase change material, the phase change material will rise along the microchannels 3 and be transported to the inside of the heat absorber 1 through the liquid outlet. This process demonstrates the capillary phenomenon. Specifically, a wetting liquid (such as water) can rise within the fine microchannels 3 due to surface tension and capillary action, thereby helping the heat absorber 1 absorb water from the replenishing liquid 2 and transport it to various parts of the heat absorber 1, effectively realizing the water replenishment of the heat absorber 1.

[0036] According to some specific embodiments of the present utility model, the microchannels 3 are distributed in a vein-like network. With such an arrangement, the microchannels 3 are distributed in a vein-like pattern, such that the roots of the veins are spread throughout various places within the heat absorber 1. Thus, the phase change material can be accurately introduced into the microchannels 3 and rapidly spread to various places within the heat absorber 1 along the vein-like distributed microchannels 3, thereby realizing uniform water replenishment within the heat absorber 1, avoiding the phenomenon that the content of the phase change material in some areas within the heat absorber 1 is extremely low or even some areas are dried up, greatly increasing the fluidity of the phase change material, and enabling rapid water replenishment to the areas within the heat absorber 1 where more is consumed. In addition, the overall strength of the replenishing liquid 2 can also be enhanced, avoiding the problem of local weakness.

[0037] According to some specific embodiments of the present utility model, the microchannel 3 includes: a primary flow channel 301 and a secondary flow channel 302. The primary flow channel 301 is arranged in the replenishing liquid 2 and has a liquid inlet at one end. Multiple secondary flow channels 302 are arranged on the surrounding side of the primary flow channel 301 and are connected to the primary flow channel 301.

[0038] With such arrangement, the primary flow channel 301 is radially distributed, and the phase change material flows into the primary flow channel 301 through the liquid inlet and is diverted to multiple secondary flow channels 302. Through the combined action of the capillary forces of the primary flow channel 301 and the secondary flow channel 302, the uniformity of the flow distribution in the replenishing liquid 2 can be effectively improved, local channel blockage can be prevented, and the flow uniformity can be improved.

[0039] According to some specific embodiments of the present utility model, the microchannel 3 also includes: a tertiary flow channel 303, a plurality of tertiary flow channels 303 are arranged between every two adjacent secondary flow channels 302, each tertiary flow channel 303 is connected to two adjacent secondary flow channels 302, and the tertiary flow channel 303 and / or the secondary flow channel 302 are provided with a liquid outlet.

[0040] In this arrangement, the primary flow channel 301 forms a main vein channel, multiple secondary flow channels 302 and multiple tertiary flow channels 303 form secondary vein channels, and the main vein channels and secondary vein channels together constitute a vein network transfer channel. The phase change material is transported to the secondary flow channel 302 and the tertiary flow channel 303 in sequence through the primary flow channel 301, and the phase change material is transferred to the heat absorber 1 through the liquid outlet of the tertiary flow channel 303 or the secondary flow channel 302, thereby further improving the flow uniformity.

[0041] See Figure 2 As shown, the primary flow channel 301 in the microchannel 3 is arranged in the middle of the replenishing liquid 2, and a liquid inlet is arranged at one end of the primary flow channel 301 to communicate with the outside. In addition, multiple secondary flow channels 302 are arranged on both sides of the primary flow channel 301, and multiple secondary flow channels 302 located on the same side of the primary flow channel 301 are parallel to each other, and multiple tertiary flow channels 303 are arranged between two adjacent secondary flow channels 302. The phase change material flows through the primary flow channel 301 through the liquid inlet, and then diffuses through the multiple secondary flow channels 302. The secondary flow channel 302 transports the phase change material to the tertiary flow channel 303, and the tertiary flow channel 303 transports the phase change material into the heat absorber 1 through the liquid outlet to replenish the phase change material content of the heat absorber 1.

[0042] Among them, the primary flow channel 301, the secondary flow channel 302 and the tertiary flow channel 303 cover the inner surface of the heat absorber 1 as much as possible, so as to achieve uniform water replenishment in the heat absorber 1, avoid the phenomenon that the content of phase change material in some areas of the heat absorber 1 is extremely low or even some areas are evaporated, greatly increase the flow efficiency and flow uniformity of the phase change material, and can quickly replenish water to the areas with high consumption in the heat absorber 1.

[0043] According to some embodiments of the present utility model, the tertiary flow channel 303 includes a straight flow portion 304. The two ends of the straight flow portion 304 are respectively connected to two adjacent secondary flow channels 302. An arbitrary one of the two adjacent secondary flow channels 302 and the tertiary flow channel 303 between the two adjacent secondary flow channels 302 form a first included angle, and the first included angle ≠ 90°.

[0044] With such a setting, the tertiary flow channel 303 is a straight flow portion 304. The first included angle formed between an arbitrary one of the two adjacent secondary flow channels 302 and the tertiary flow channel 303 therebetween is an obtuse angle or an acute angle. By utilizing capillary action and the self - gravity of the phase - change material, it can be quickly drained into multiple tertiary flow channels 303, accelerating the drainage speed.

[0045] According to some embodiments of the present utility model, the tertiary flow channel 303 includes at least two straight flow portions 304. The at least two straight flow portions 304 are connected in sequence, and a second included angle is formed between two adjacent straight flow portions 304. The outermost ends of the at least two straight flow portions 304 away from each other are respectively connected to two adjacent secondary flow channels 302.

[0046] With such a setting, as Figure 2 shown, the tertiary flow channel 303 includes two straight flow portions 304, and a second included angle is formed between the two straight flow portions 304. By expanding the flow path of the tertiary flow channel 303, the water - replenishing channels for the heat absorber 1 are effectively increased, so that the at least two straight flow portions 304 can respectively transport the phase - change material to the heat absorber 1, realizing rapid water replenishment.

[0047] Furthermore, the extending directions of the straight flow portions 304 are formed in the same plane, and multiple tertiary flow channels 303 are not connected to each other. With such a setting, as Figure 2 shown, the primary flow channel 301, the secondary flow channels 302, and the tertiary flow channels 303 are spread out in a planar manner, so that the extending directions of the straight flow portions 304 are formed in the same plane. Moreover, the tertiary flow channels 303 with one straight flow portion 304 or the tertiary flow channels 303 with two straight flow portions 304 are not connected to each other. As Figure 2 shown, multiple tertiary flow channels 303 are arranged at intervals in sequence, so that each tertiary flow channel 303 can replenish water to the heat absorber 1.

[0048] Specifically, as Figure 2 shown, since the flow velocity on the side of the replenishing liquid 2 is slower than that in the middle, multiple tertiary flow channels 303 with one straight flow portion 304 are provided between two adjacent secondary flow channels 302 on the side of the replenishing liquid 2, and the tertiary flow channels 303 between two adjacent secondary flow channels 302 within the side of the replenishing liquid 2 have two straight flow portions 304.

[0049] According to some embodiments of the present utility model, for the tertiary flow channels 303 located on the peripheral side of the primary flow channel 301, the opening directions of the second included angles thereof all face the primary flow channel 301. With such an arrangement, it can ensure uniform water replenishment in the heat absorber 1, and avoid the phenomenon that the content of the phase change material in some areas of the heat absorber 1 is extremely low or even some areas are evaporated dry.

[0050] According to some embodiments of the present utility model, the heat absorption structure further includes: a liquid storage tank 4, an inlet is communicated with the liquid storage tank 4, and the liquid storage tank 4 is used for storing the phase change material.

[0051] With such an arrangement, the inlet of the replenishing liquid 2 is communicated with the external liquid storage tank 4, which is used to provide a continuous supply of the phase change material to the heat absorber 1, and there is no need to replace the replenishing liquid 2 and the heat absorber 1.

[0052] According to some embodiments of the present utility model, the heat absorption structure further includes: a packaging member 5, the packaging member 5 is wrapped around the outer periphery of the heat absorber 1, and a packaging weak point 501 is provided on the packaging member 5. The packaging weak point 501 is used to break open under the action of force for the phase change material after phase change in the heat absorber 1 to be discharged from the packaging weak point 501 after absorbing heat by phase change.

[0053] In this way, in order to timely discharge the phase change material after phase change in the heat absorber 1 and reduce the difficulty of water replenishment in the heat absorber 1, one or more packaging weak points 501 are preset on the packaging member 5. When the extrusion pressure between the battery cells 6 or the pressure in the heat absorber 1 reaches a certain range, the packaging weak point 501 is squeezed open, so that the water phase change material in the heat absorber 1 can be discharged.

[0054] According to some embodiments of the present utility model, the heat absorber 1 and the replenishing liquid 2 are integrally formed. With such an arrangement, the replenishing liquid 2 and the heat absorber 1 are integrally formed, which is convenient for manufacturing and installation.

[0055] Optionally, the heat absorber 1 is a phase change material. The phase change material can be a solid-gas phase change material or a liquid-gas phase change material. During normal use, the phase change material does not undergo a phase change. When the temperature around the heat absorption structure rises, the phase change material can undergo a phase change after absorbing enough heat, changing from a solid to a gas or from a liquid to a gas. In this way, it can effectively prevent the influence of the high-temperature environment on the internal components and ensure the stable operation of the device.

[0056] Further optionally, the heat absorber 1 is a hydrogel. Specifically, when the battery cell 6 undergoes thermal runaway, a large amount of heat is generated by the battery cell 6 in a short time, and the temperature rises sharply at the same time. When the temperature reaches the boiling point of the liquid water in the hydrogel, the water in the hydrogel absorbs a large amount of heat generated by the battery cell 6 through phase change, greatly reducing the heat transferred from the thermally runaway battery cell 6 to the adjacent battery cell 6. When the water in the hydrogel undergoes a phase change and turns into water vapor, the water content in the hydrogel decreases. Therefore, in order to maintain the water content in the hydrogel or reduce the decreasing rate of the water content in the hydrogel, water can be supplemented to the hydrogel by the replenishing liquid 2 from the external liquid storage tank 4, so as to improve the overall heat absorption performance of the heat absorption structure during the thermal runaway of the battery cell 6, reduce the heat transferred from the thermally runaway battery cell 6 to the adjacent battery cell 6, and enhance the ability to inhibit thermal diffusion.

[0057] The battery pack according to the second aspect embodiment of the present invention includes: a plurality of battery cells 6 and a heat absorption structure, and the heat absorber 1 is arranged between two adjacent battery cells 6.

[0058] According to some embodiments of the present invention, the phase change boiling point of the heat absorber 1 is above the normal operating temperature of the battery pack.

[0059] Specifically, when the operating temperature of the battery pack reaches the phase change boiling point of the heat absorber 1, the heat absorber 1 absorbs a large amount of heat generated by the battery cell 6 through phase change, greatly reducing the heat transferred from the thermally runaway battery cell 6 to the adjacent battery cell 6. And the phase change material is supplemented to the heat absorber 1 by the replenishing liquid 2, so as to improve the overall heat absorption performance of the heat absorption structure during the thermal runaway of the battery cell 6, reduce the heat transferred from the thermally runaway battery cell 6 to the adjacent battery cell 6, and enhance the ability to inhibit thermal diffusion.

[0060] The electrical device according to the third aspect embodiment of the present invention includes a battery pack.

[0061] According to the heat absorption structure of the present invention, by arranging the replenishing liquid 2 inside the heat absorber 1, the replenishing liquid 2 can continuously provide the phase change material for the heat absorber 1, thereby improving the heat absorption performance of the heat absorption structure, and further enhancing the ability to inhibit thermal diffusion. When the heat absorption structure is applied to the battery pack, it can effectively inhibit the thermal diffusion of the battery pack and reduce the problem of heat generation of the thermally runaway battery cell 6 from the source.

[0062] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0063] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A heat absorbing structure, characterized in that: include: A heat absorber, wherein the heat absorber can absorb heat through phase change; A replenishing liquid is arranged inside the heat absorbing body, the replenishing liquid is provided with a liquid outlet connected to the heat absorbing body and a liquid inlet connected to the outside, and the replenishing liquid is used to supplement the phase change material to the heat absorbing body.

2. The heat absorption structure according to claim 1, characterized in that: The replenishing liquid is provided with a microchannel, and the microchannel has the liquid inlet and the liquid outlet, which are used to guide the phase change material into the heat absorbing body.

3. The heat absorption structure according to claim 2, characterized in that: The microchannels are distributed in a leaf vein network shape.

4. The heat absorption structure according to claim 2, characterized in that: The microchannel comprises: A primary flow channel, the primary flow channel is arranged through the replenishing liquid and one end of which is provided with the liquid inlet; A secondary flow channel, wherein a plurality of the secondary flow channels are arranged around the primary flow channel and are connected to the primary flow channel.

5. The heat absorption structure according to claim 4, characterized in that: The microchannel also includes: A tertiary flow channel, wherein a plurality of the tertiary flow channels are arranged between each two adjacent secondary flow channels, each of the tertiary flow channels is connected with two adjacent secondary flow channels, and the liquid outlet is arranged on the tertiary flow channel and / or the secondary flow channel.

6. The heat absorption structure according to claim 5, characterized in that: The tertiary flow channel includes a direct current portion, both ends of which are respectively connected to two adjacent secondary flow channels, and any one of the two adjacent secondary flow channels forms a first angle with the tertiary flow channel between the two adjacent secondary flow channels, and the first angle is ≠90°.

7. The heat absorption structure according to claim 5, characterized in that: The tertiary flow channel includes at least two direct current parts, at least two of the direct current parts are connected in sequence and a second angle is formed between two adjacent direct current parts, and the outermost ends of at least two direct current parts that are far away from each other are respectively connected to two adjacent secondary flow channels.

8. The heat absorption structure according to claim 6 or 7, characterized in that: The extending directions of the direct flow parts are formed on the same plane, and the plurality of the third-level flow channels are not interconnected.

9. The heat absorption structure according to claim 7, characterized in that: The opening direction of the second angle of the tertiary flow channel located on the peripheral side of the primary flow channel is all toward the primary flow channel.

10. The heat absorption structure according to claim 1, characterized in that: Also includes: A liquid storage tank, wherein the liquid inlet is communicated with the liquid storage tank, and the liquid storage tank is used to store phase change material.

11. The heat absorption structure according to claim 1, characterized in that: Also includes: The packaging component is coated on the outer periphery of the heat absorber, and a packaging weak point is provided on the packaging component, and the packaging weak point is used to break open under the action of force so that the phase change material after the phase change of the heat absorber after phase change absorption of heat can be discharged from the packaging weak point.

12. The heat absorption structure according to claim 1, characterized in that: The heat absorber and the liquid replenisher are an integrally formed part.

13. The heat absorption structure according to claim 1, characterized in that: The heat absorber is a phase change material.

14. The heat absorption structure according to claim 1, characterized in that: The heat absorber is a hydrogel.

15. A battery pack, characterized in that: include: Multiple cells; The heat absorption structure according to any one of claims 1 to 14, wherein the heat absorption body is arranged between two adjacent battery cells.

16. The battery pack according to claim 15, characterized in that: The phase change boiling point of the heat absorber is above the normal operating temperature of the battery pack.

17. An electrical equipment, characterized in that: include: The battery pack according to any one of claims 15 to 16.

Images