CN219843036U

CN219843036U - Heat absorption structure, battery pack and power utilization device

Info

Publication number: CN219843036U
Application number: CN202321029286.7U
Authority: CN
Inventors: 苏碧哲; 钟日军; 蔡耀民; 乐倩利; 彭青波
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-10-17
Anticipated expiration: 2033-04-28

Abstract

The present disclosure relates to a heat absorbing structure, a battery pack and an electric device, the heat absorbing structure comprising: the shell and the non-solid heat absorbing medium arranged in the shell are uniformly provided with a plurality of blocking areas at intervals, the inner part of the shell is separated by the plurality of blocking areas to be filled with the non-solid heat absorbing medium, and the blocking areas can limit the non-solid heat absorbing medium to flow into the packing areas. Due to the fact that the plurality of blocking areas with uniform intervals are arranged, and the blocking areas can limit the non-solid heat absorbing medium to flow into the blocking areas, the blocking areas can provide supporting points and stress points for the non-solid heat absorbing medium and balance inertia force, movement and deformation of the non-solid heat absorbing medium are reduced, a forming state is kept, and heat absorbing effect is guaranteed.

Description

Heat absorption structure, battery pack and power utilization device

Technical Field

The disclosure relates to the technical field of heat absorption, in particular to a heat absorption structure, a battery pack and an electric device.

Background

In the related art, when the heat absorbing material is in a liquid state or a semi-liquid state, due to the action of gravity or inertia along with the movement of the battery cell, the heat absorbing material also deforms along with the movement, so that the molding state is difficult to keep, and the heat absorbing effect is further affected.

Disclosure of Invention

The disclosure provides a heat absorbing structure, a battery pack and an electric device, wherein the heat absorbing structure can solve technical problems in related technologies.

In order to achieve the above object, the present disclosure provides a heat absorbing structure including: the heat absorption structure comprises a shell and a non-solid heat absorption medium arranged in the shell, wherein a plurality of blocking areas are uniformly arranged on the heat absorption structure at intervals, the inner part of the shell is separated by the blocking areas to form a filling area filled with the non-solid heat absorption medium, and the blocking areas can limit the non-solid heat absorption medium to flow into the filling area.

Optionally, the plurality of blocking areas includes a plurality of first blocking areas, each of the first blocking areas includes a plurality of first blocking areas, the plurality of first blocking areas are disposed at intervals in a first direction, and the plurality of first blocking areas are disposed at intervals in a second direction, wherein the first direction and the second direction intersect.

Optionally, the first direction and the second direction are perpendicular to each other, the first blocking area extends between 3mm and 100mm long in the first direction, and the first blocking area extends between 1mm and 100mm wide in the second direction.

Optionally, in the first direction, a gap between two adjacent first blocking areas is between 0.5mm and 100 mm; and/or, in the second direction, a gap between two adjacent first blocking areas is between 3mm and 100 mm.

Optionally, the shell includes first casing and second casing, the edge of first casing with the edge sealing connection of second casing, the edge sealing connection of first casing with the edge sealing connection of second casing, first casing with the regional laminating sealing connection of part of second casing is in order to form a plurality of the blocking area, first casing with another regional interval of second casing just sets up relatively in order to form the packing area.

Optionally, the first shell is configured as a first film, the second shell is configured as a second film, and partial areas of the first film and the second film are in plastic package connection to form a plurality of blocking areas.

Optionally, the housing comprises a first housing, a second housing, and a plurality of blocking members, wherein an edge of the first housing is in sealing connection with an edge of the second housing; and partial areas of the first shell and the second shell are filled and connected with a plurality of blocking pieces to correspondingly form a plurality of blocking areas, and the other partial areas of the first shell and the second shell are spaced and oppositely arranged to form the filling areas.

Optionally, the shell comprises a first shell and a second shell, and the edge of the first shell is in sealing connection with the edge of the second shell;

the first shell is uniformly provided with a plurality of first openings at intervals, the second shell is uniformly provided with a plurality of second openings at intervals, and the first openings and the second openings are oppositely arranged in one-to-one correspondence and are in edge sealing connection so as to construct a plurality of blocking areas.

Optionally, the proportion of the packing area to the internal space of the shell is between 50% and 98%.

The present disclosure also provides a battery pack, which includes a battery cell and a heat absorbing structure, and the heat absorbing structure is used for being attached to the battery cell.

The present disclosure further provides an electrical device including the heat absorbing structure, or the electrical device including the battery pack.

In the technical scheme, the heat absorbing structure is uniformly provided with the plurality of blocking areas at intervals, the inner part of the shell is divided into the filling areas for filling the non-solid heat absorbing medium by the plurality of blocking areas, the non-solid heat absorbing medium can flow in the filling areas, and the blocking areas can limit the non-solid heat absorbing medium to flow in the filling areas, so that the blocking areas can provide supporting points and stress points for the non-solid heat absorbing medium to balance inertia force, thereby reducing the movement and deformation of the non-solid heat absorbing medium, keeping a forming state and guaranteeing the heat absorbing effect.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a schematic structural view of a heat absorbing structure of an embodiment of the present disclosure.

Fig. 2 is a schematic structural view of a heat absorbing structure according to another embodiment of the present disclosure.

Description of the reference numerals

1. The blocking area of the housing 11

110. First blocking area group 111 first blocking area

12. First direction of packing region A

B second direction 101 edge entrance

102. Edge outlet

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

Referring to fig. 1 and 2, the present disclosure provides a heat absorbing structure including: the shell 1 and the non-solid heat absorbing medium arranged in the shell 1, a plurality of blocking areas 11 are uniformly arranged in the heat absorbing structure at intervals, the plurality of blocking areas 11 divide the interior of the shell 1 into a filling area 12 filled with the non-solid heat absorbing medium, and the blocking areas 11 can limit the non-solid heat absorbing medium to flow into the filling area.

In the above technical solution, the heat absorbing structure is uniformly provided with a plurality of blocking areas 11 at intervals, and the plurality of blocking areas 11 divide the interior of the housing 1 into a filling area 12 filled with a non-solid heat absorbing medium, and the non-solid heat absorbing medium can flow in the filling area 12, but due to the plurality of blocking areas 11 at uniform intervals, and the blocking areas 11 can limit the non-solid heat absorbing medium to flow in, the blocking areas 11 can provide supporting points and stress points for the non-solid heat absorbing medium, balance inertia force, thereby reducing movement and deformation of the non-solid heat absorbing medium, maintaining a molding state, and guaranteeing heat absorbing effects.

It should be noted that, the above-mentioned restriction of the non-solid heat absorbing medium flowing into the blocking area 11 includes two restriction modes, and the first and blocking areas 11 can completely restrict the non-solid heat absorbing medium flowing into the first and second restriction modes; the second, blocking zone 11 is capable of restricting the flow rate or flow of the non-solid heat absorbing medium into it. For example, a cavity is formed inside the blocking area 11, and a flow hole (not shown) communicating with the cavity is formed at an edge of the blocking area 11, and the flow hole may define a flow rate or a flow amount of the non-solid heat absorbing medium flowing into the cavity.

The housing 1 may be made of a rigid material or a flexible material, which is not limited in this disclosure. In addition, the non-solid heat absorbing medium may be liquid, solid-liquid mixture, or semi-liquid, which is not limited in this disclosure.

Alternatively, referring to fig. 1 and 2, the plurality of blocking areas 11 includes a plurality of first blocking areas 110, each of the first blocking areas 110 includes a plurality of first blocking areas 111, the plurality of first blocking areas 111 are disposed at equal intervals in a first direction a, and the plurality of first blocking areas 110 are disposed at equal intervals in a second direction B, wherein the first direction a and the second direction B intersect.

In this embodiment, on the one hand, the plurality of first blocking areas 111 are arranged at intervals in the first direction a, and on the other hand, the plurality of first blocking areas 111 are arranged at intervals in the second direction B; therefore, the interior of the shell 1 is uniformly divided in the first direction A and the second direction B, so that the packing areas 12 are distributed in the shell 1 in a grid shape, the non-solid heat absorbing medium is ensured to be uniformly distributed in the packing areas 12, and each area of the heat absorbing structure has equivalent heat absorbing capacity.

Alternatively, referring to fig. 1 and 2, the first direction a and the second direction B are perpendicular to each other, the first blocking area 111 extends between 3mm and 100mm long in the first direction a, and the first blocking area 111 extends between 1mm and 100mm wide in the second direction B. The long side of the first blocking area 111 extending in the first direction a can effectively support the non-solid heat absorbing medium, and the short side of the first blocking area 111 extending in the second direction B can balance the inertia effect during the movement of the non-solid heat absorbing medium. The present disclosure is not limited to the shape and specific dimensions of the first blocking area 111.

Alternatively, as shown with reference to fig. 1, in the first direction a, the gap between two adjacent first blocking areas 111 is between 0.5mm and 100 mm; and/or, in the second direction B, the gap between two adjacent first blocking areas 111 is between 3mm and 100mm, thereby ensuring that the non-solid heat absorbing medium can flow smoothly. The present disclosure is not limited to the gap size of two adjacent first blocking areas 111.

In addition, the proportion of the packing area 12 to the internal space of the shell 1 is 50-98%, so that the shell 1 is ensured to be filled with sufficient non-solid heat absorbing medium, and the heat absorbing capacity is improved. In other embodiments, the packing region 12 may comprise between 75% and 95% of the interior space of the housing 1, although the present disclosure is not limited to a particular ratio.

In other embodiments, referring to fig. 1, the housing 1 includes a first housing and a second housing, where an edge of the first housing is in sealing connection with an edge of the second housing, and partial areas of the first housing and the second housing are in fitting sealing connection to form a plurality of blocking areas 11, and another partial areas of the first housing and the second housing are disposed at intervals and are disposed opposite to each other to form a packing area 12. That is, in the blocking area 11, the first housing and the second housing are disposed in abutting sealing connection with each other, so that the non-solid heat absorbing medium flows to the filler area 12. The present disclosure is not limited to a specific manner of connecting the first housing and the second housing.

For example, the first housing is configured as a first film, the second housing is configured as a second film, and the partial areas of the first film and the second film are connected in a plastic package to form a plurality of blocking areas 11, and a specific sealing method may be as follows:

the first film and the second film are aligned, edges of the first film and the second film are aligned and connected in a plastic package mode, an edge inlet 101 and an edge outlet 102 can be reserved, then the first film and the second film are dotted in an array mode to carry out plastic package on the first film and the second film, dotted areas are a plurality of blocking areas 11, non-dotted areas are communicated with each other, a non-solid heat absorbing medium is injected, vacuumizing or other injection modes can be adopted, the method is not limited in this disclosure, and finally the edge inlet 101 and the edge outlet 102 are sealed.

In addition, the first film and the second film may be made of a polymer or a polymer composite, for example, PI, PP, TPU, PE, a composite polymer film, an aluminum plastic film, or the like may be used.

In other embodiments, the housing 1 includes a first housing, a second housing, and a plurality of blocking members (not shown), where an edge of the first housing is in sealing connection with an edge of the second housing, partial areas of the first housing and the second housing are filled with and connected with the plurality of blocking members to form a plurality of blocking areas 11 correspondingly, and another partial areas of the first housing and the second housing are spaced apart and disposed opposite to form a filling area 12. That is, in this embodiment, the first housing and the second housing are connected by the blocking member to form the blocking area 11. For example, the blocking member may configure a support block that fills and connects between the first housing and the second housing.

Alternatively, in other embodiments, as shown with reference to fig. 2, the housing includes a first housing and a second housing, the edge of the first housing being sealingly connected to the edge of the second housing; the first casing is provided with a plurality of first openings uniformly at intervals, the second casing is provided with a plurality of second openings uniformly at intervals, and the plurality of first openings are oppositely arranged in one-to-one correspondence with the plurality of second openings and are in edge sealing connection so as to construct a plurality of blocking areas 11. That is, the plurality of blocking areas 11 are configured as a plurality of hollow areas, and can provide supporting points and stress points for the non-solid heat absorbing medium while reducing weight, and balance inertia force, thereby reducing movement and deformation of the non-solid heat absorbing medium, maintaining a molding state, and guaranteeing heat absorbing effect.

The disclosure also provides a battery pack, which comprises a battery cell and the heat absorbing structure, wherein the heat absorbing structure is used for being attached to the battery cell so as to absorb heat of the battery cell. The heat absorbing structure can be attached to the heat radiating surface of the battery cell and is matched with the battery cell in shape. However, the size of the heat absorbing structure should be smaller than that of the battery cell, so that interference caused by installation of the battery cell is avoided.

The disclosure also provides an electric device, which comprises the heat absorbing structure, or comprises the battery pack.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims

1. A heat absorbing structure, characterized in that the heat absorbing structure comprises: the heat absorption structure comprises a shell and a non-solid heat absorption medium arranged in the shell, wherein a plurality of blocking areas are uniformly arranged on the heat absorption structure at intervals, the inner part of the shell is separated by the blocking areas to form a filling area filled with the non-solid heat absorption medium, and the blocking areas can limit the non-solid heat absorption medium to flow into the filling area.

2. The heat absorbing structure of claim 1, wherein the plurality of blocking areas comprises a plurality of first blocking areas, each of the first blocking areas comprises a plurality of first blocking areas, the plurality of first blocking areas are disposed at equal intervals in a first direction, and the plurality of first blocking areas are disposed at equal intervals in a second direction, wherein the first direction and the second direction intersect.

3. The heat absorbing structure of claim 2, wherein the first direction and the second direction are perpendicular to each other, the first blocking region extending between 3mm and 100mm long in the first direction, the first blocking region extending between 1mm and 100mm wide in the second direction.

4. The heat absorbing structure of claim 2, wherein in the first direction, a gap between two adjacent first blocking areas is between 0.5mm and 100 mm; and/or, in the second direction, a gap between two adjacent first blocking areas is between 3mm and 100 mm.

5. The heat absorbing structure of any one of claims 1-4, wherein the housing comprises a first housing and a second housing, an edge of the first housing is sealingly connected to an edge of the second housing, partial areas of the first housing and the second housing are in conforming and sealing connection to form a plurality of the blocking areas, and another partial areas of the first housing and the second housing are spaced apart and oppositely disposed to form the packing areas.

6. The heat absorbing structure of claim 5, wherein the first housing is configured as a first film and the second housing is configured as a second film, and wherein portions of the first film and the second film are in plastic-sealed connection to form a plurality of the blocking areas.

7. The heat absorbing structure of any one of claims 1-4, wherein the housing comprises a first housing, a second housing, and a plurality of blocking members, an edge of the first housing being sealingly connected to an edge of the second housing;

and partial areas of the first shell and the second shell are filled and connected with a plurality of blocking pieces to correspondingly form a plurality of blocking areas, and the other partial areas of the first shell and the second shell are spaced and oppositely arranged to form the filling areas.

8. The heat absorbing structure of any one of claims 1-4, wherein the housing comprises a first housing and a second housing, an edge of the first housing being sealingly connected to an edge of the second housing;

9. The heat absorbing structure of any one of claims 1-4, wherein the filler region comprises between 50% and 98% of the shell interior space.

10. A battery pack, characterized in that the battery pack comprises an electric core and the heat absorbing structure as claimed in any one of claims 1 to 9, and the heat absorbing structure is used for being attached to the electric core.

11. An electrical device comprising the heat absorbing structure of any one of claims 1-9, or comprising the battery pack of claim 10.