CN220306335U - Heat radiation structure and battery pack - Google Patents

Abstract

The utility model discloses a heat dissipation structure, comprising: a heat dissipation part; the heat dissipation part comprises a first heat dissipation module and a second heat dissipation module, the first heat dissipation module is communicated with the second heat dissipation module, and the first heat dissipation module and the second heat dissipation module are arranged between two adjacent battery modules; the heat insulation structure is arranged between the first heat dissipation module and the second heat dissipation module and used for isolating heat transfer between the first heat dissipation module and the second heat dissipation module; a battery pack comprises a heat dissipation structure and at least two battery modules which are sequentially arranged; the heat dissipation structure is arranged between two adjacent battery modules; and when the cooling liquid flows through different heat dissipation modules, heat absorption cooling is performed on different battery modules, the heat absorption time of the cooling liquid is prolonged, and the heat absorption effect of the cooling liquid is improved.

Description

Heat radiation structure and battery pack

Technical Field

The utility model relates to the field of batteries, in particular to a heat dissipation structure and a battery pack.

Background

The battery pack is widely applied as a main energy storage element in the battery field, and according to the characteristics of the battery pack, heat can be generated in the use process of the battery pack, in order to ensure the use safety of the battery pack, a liquid cooling plate or a liquid cooling pipe is usually arranged between battery modules, and cooling liquid is introduced from one end of the cooling liquid and introduced from the other end of the cooling liquid so as to take away the heat generated by the battery modules.

Therefore, the cooling liquid in the same cooling plate or liquid cooling pipe is simultaneously contacted with two adjacent battery modules to absorb and take away heat, and the cooling effect of the cooling liquid cannot be improved to the greatest extent because the cooling liquid can not absorb the heat generated by the battery module seat to the greatest extent due to the short time between the two battery modules through which the cooling liquid flows.

Disclosure of Invention

In order to overcome at least one of the defects in the prior art, the utility model provides a heat dissipation structure and a battery pack, wherein the heat absorption cooling is performed on different battery modules when the cooling liquid flows through different heat dissipation modules, so that the heat absorption time of the cooling liquid is prolonged, and the heat absorption effect of the cooling liquid is improved.

The utility model adopts the technical proposal for solving the problems that:

a heat dissipation structure, comprising:

a heat dissipation part;

the heat dissipation part comprises a first heat dissipation module and a second heat dissipation module, the first heat dissipation module is communicated with the second heat dissipation module, and the first heat dissipation module and the second heat dissipation module are arranged between two adjacent battery modules;

the heat insulation structure is arranged between the first heat dissipation module and the second heat dissipation module and is used for isolating heat transfer between the first heat dissipation module and the second heat dissipation module.

Further, the heat insulation structure is a heat insulation plate or a heat insulation gap;

the middle part of the heat insulating plate is of a hollow structure.

Further, the heat dissipation part is a heat dissipation pipe, and the heat dissipation pipe comprises a first pipeline, a second pipeline and a connecting pipe;

one end of the connecting pipe is connected with one end of the first pipeline, and the other end of the connecting pipe is connected with one end of the second pipeline;

the first pipeline is arranged on one side of the heat insulation structure, and the second pipeline and the first pipeline are oppositely arranged on the other side of the heat insulation structure.

Further, the first pipeline and/or the second pipeline are/is of a reciprocating bending structure.

Further, the first pipeline and/or the second pipeline are embedded in the heat insulation plate

Further, one end of the first pipe away from the connecting pipe and one end of the second pipe away from the connecting pipe are located at the same end of the battery module.

Further, a heat conducting fin is arranged between the first heat dissipation module and the nearby battery module;

and/or a heat conducting fin is arranged between the second heat dissipation module and the nearby battery module.

Further, the battery module further comprises a semiconductor refrigerating piece, wherein the semiconductor refrigerating piece is arranged on the side wall of the battery module.

A battery pack comprises the heat dissipation structure and at least two battery modules which are sequentially arranged;

the heat dissipation structure is arranged between two adjacent battery modules.

Further, the battery module further comprises end plates, and the end plates are respectively arranged at two ends of the battery module.

In summary, the heat dissipation structure and the battery pack provided by the utility model have the following technical effects:

1) The cooling liquid respectively absorbs and transfers heat to two adjacent battery modules in a separated mode in the first heat dissipation module and the second heat dissipation module, and meanwhile, the two heat dissipation modules are separated by the heat insulation structure so as to isolate heat between the two heat dissipation modules, and the cooling liquid with higher heat in the rear module is used for preventing heat from being transferred to the cooling liquid with higher heat in the front;

2) The heat insulation structure simplifies the whole structure of the heat radiation structure for the heat insulation gap, and reduces the weight of the heat radiation structure; the heat insulation structure is a heat insulation plate, and the heat insulation plate can more effectively separate the heat of the first heat dissipation module and the heat of the second heat dissipation module;

3) The radiating part is a radiating pipe, the radiating pipe has the characteristic of simple structure, and the radiating pipe is embedded in the heat insulation plate, so that the radiating pipe is more firmly installed and fixed; furthermore, the heat dissipation part comprises the bending structure so that the cooling liquid can flow further, and the cooling liquid can absorb more heat.

4) The insulating plate can effectively separate the battery module from the aluminum plate, so that the conditions of short circuit and the like of the battery pack are prevented;

5) The connection assembly may connect adjacent two battery modules and the heat dissipation structures of the two battery modules as a unit to form a unit assembly convenient to install.

Drawings

Fig. 1 is a schematic structural view of a heat dissipating part, a heat insulating structure and a semiconductor refrigeration sheet of the present utility model;

fig. 2 is an exploded view of the internal structure of the battery pack of the present utility model;

fig. 3 is an assembly view of the internal structure of the battery pack of the present utility model;

fig. 4 is an exploded assembly view of the battery pack of the present utility model;

fig. 5 is an assembly view of the internal structure of the battery pack and the case base of the present utility model;

fig. 6 is a schematic structural view of a battery pack according to the present utility model.

Wherein the reference numerals have the following meanings:

1. a heat dissipation part; 11. a first heat dissipation module; 12. a second heat dissipation module; 2. a heat insulating structure; 3. a heat conductive sheet; 4. a battery module; 5. a connection assembly; 51. a connecting plate; 52. a connecting rod; 6. an end plate; 7. an aluminum row; 8. an insulating sheet; 9. a semiconductor refrigeration sheet; 10. a case; 101. a box base; 102. a case cover; 13. a quick plug-in; 14. a handle; 141. a grip hole; 142. thickening the bulge; 15. a mounting position; 16. a battery management system.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1

Referring to fig. 1, 2 and 3, the present utility model discloses a heat dissipation structure, comprising:

the heat dissipation part 1 comprises a first heat dissipation module 11 and a second heat dissipation module 12, wherein the first heat dissipation module 11 is communicated with the second heat dissipation module 12, the first heat dissipation module 11 and the second heat dissipation module 12 are arranged between two adjacent battery modules 4, the first heat dissipation module 11 dissipates heat to one of the two adjacent battery modules 4, and the second heat dissipation module 12 dissipates heat to the other of the two adjacent battery modules 4.

The preferred scheme is that the radiating part 1 is a radiating pipe, and the radiating pipe comprises a first pipeline, a second pipeline and a connecting pipe; one end of the connecting pipe is connected with one end of the first pipeline, and the other end is connected with one end of the second pipeline, and it can be understood that the first heat dissipation module 11 is the first pipeline, and the second heat dissipation module 12 is the second pipeline.

Further, it is known that in order to increase the contact areas of the first and second pipes with the battery module 4, it is preferable that the first and/or second pipes are reciprocally bent, and in particular, reciprocally bent in a serpentine manner, so that the first and/or second pipes are serpentine.

Other embodiments of the heat sink member 1 further include: the heat dissipation part 1 comprises a first cavity and a second cavity, and it is also understood that the first heat dissipation module 11 is the first cavity, the second heat dissipation module 12 is the second cavity, and more preferably, the contact surface between the first cavity and the second cavity and the battery module 4 is increased, and the two cavities are square cavities so as to increase the contact surface between the side wall of the cavity and the battery module 4; simultaneously, the first cavity and the second cavity are communicated.

A battery pack comprises a heat dissipation structure and at least two battery modules 4 which are sequentially arranged; the heat dissipation structure is arranged between two adjacent battery modules 4; as can be known from the prior art, in this embodiment, the battery module 4 preferably includes a plurality of square cells, and the square cells are arranged in sequence to form the battery module 4; in the present embodiment, two battery modules 4 are exemplified.

Specifically, the first pipe is attached to the side wall of one battery module 4, and the second pipe is attached to the side wall of the other battery module 4, so that it can be known that the first pipe and the second pipe are arranged in parallel and not in a coplanar manner; the cooling liquid is introduced from one of the first pipe and the second pipe, enters the other of the first pipe and the second pipe through the connecting pipe, and finally flows out, and it can be known that when the cooling liquid flows through the first pipe, the cooling liquid absorbs and transfers heat to the battery module 4 attached to the first pipe, and when the cooling liquid flows through the second pipe, the cooling liquid absorbs and transfers heat to the battery module 4 attached to the second pipe.

More preferably, one of the first and second pipes must have one end that is a leading-in end of the coolant, the other end that is a discharging end of the coolant, and in order to facilitate the leading-in and discharging of the coolant in the first and second pipes, the leading-in and discharging ends are located at one end of the same battery module 4, more specifically, one of the leading-in and discharging ends is an end of the first pipe that is away from the connection pipe, and the other is an end of the second pipe that is away from the connection pipe.

Example two

On the basis of the first embodiment, referring to fig. 1, for convenience of description, in this embodiment, the cooling liquid sequentially flows through the first pipe and the second pipe, that is, the inlet end is located in the first pipe, and the outlet end is located in the second pipe, so it can be known that the cooling liquid has higher heat than that in the first pipe when flowing through the second pipe, and in order to prevent the heat of the second pipe from being transferred to the first pipe, a heat insulation structure 2 is disposed between the first pipe and the second pipe, that is, the heat insulation structure 2 is disposed between the first heat dissipation module 11 and the second heat dissipation module 12; the insulation structure 2 includes, but is not limited to, an insulation gap and an insulation panel.

The heat insulation gap, namely, the gap is arranged between the first pipeline and the second pipeline so as to prevent the first pipeline and the second pipeline from contacting each other, the size of the gap can be set according to actual needs, and heat between the first pipeline and the second pipeline can be dissipated through the gap.

The heat insulating plate is arranged between the first pipeline and the second pipeline, and is a hollow structure of the heat insulating plate in order to avoid heat transfer of the heat insulating plate.

In this embodiment, the heat insulation structure 2 preferably selects a heat insulation board, more preferably, in order to increase the installation stability of the first pipeline and the second pipeline, the first pipeline and/or the second pipeline are embedded in the heat insulation board, so that the first pipeline and the second pipeline are installed on the heat insulation board, and similarly, the connecting pipe can be embedded on the heat insulation board.

Example III

Based on the first embodiment and the second embodiment, referring to fig. 1 and fig. 2, the heat dissipation structure further includes a semiconductor refrigeration sheet 9 (TEC), preferably, a plurality of semiconductor refrigeration sheets 9 are respectively disposed on two sidewalls of two adjacent battery modules 4, which are close to each other, and the plurality of semiconductor refrigeration sheets 9 on the battery modules 4 are uniformly disposed along the height interval of the battery modules 4, and the semiconductor refrigeration sheets 9 are located at the end of the heat insulation board; in addition, the semiconductor cooling fins 9 may be provided on other side walls of the battery module 4, which are not described here.

Other schemes for enhancing the heat dissipation efficiency of the heat dissipation structure further comprise: a heat conducting fin 3 is arranged between the first heat dissipation module 11 and the nearby battery module 4, and/or a heat conducting fin 3 is arranged between the second heat dissipation module 12 and the nearby battery module 4; it is known that the heat conductive sheet 3 accelerates the heat dissipation of the battery module 4 to the first heat dissipation module 11 or the second heat dissipation module 12.

Example IV

Referring to fig. 2 and 3, in order to facilitate the assembly of the battery modules 4 into module units, in the present embodiment, two adjacent battery modules 4 are taken as one module unit for example; the battery pack further comprises a connecting assembly 5, the connecting assembly 5 comprises a connecting plate 51, one end of the connecting plate 51 is connected with one of the two adjacent battery modules 4, and the other end of the connecting plate 51 is connected with the other of the two adjacent battery modules 4; preferably, the connection plate 51 is connected to the battery module 4 by bolts.

Furthermore, in order to suppress the expansion force of the battery modules 4, the end plates 6 are respectively disposed at two ends of the same battery module 4, and the battery modules 4 are sandwiched by the end plates 6 at two ends, and it is known that, in order to facilitate the connection and installation of the connection plates 51, the connection plates 51 and the end plates 6 may be connected by bolts.

In order to strengthen the connection between the connection plates 51 and the end plates 6, the connection assembly further comprises connection rods 52, the connection rods 52 are used for replacing bolts, specifically, the top and bottom of the two end plates 6 at the same end of the two adjacent battery modules 4 are respectively connected through one connection plate 51, one end of each connection rod 52 penetrates through the top connection plate 51, the end plate 6 and the bottom connection plate 51 to connect the end plate 6 with the two connection plates 51, therefore, it can be known that the connection rods 52 penetrate through the end plate 6 and connect the two connection plates 51 at the same side, and the two ends of the connection rods 52 are connected through nuts in a threaded manner to limit the connection plates 51 on the end plates 6, so that the integral connection of the two adjacent battery modules 4 is strengthened; preferably, at least two connecting rods 52 are penetrated in each end plate 6, and two connecting rods 52 are taken as an example, two connecting rods 52 are symmetrically penetrated at two sides of the end plate 6, so that four connecting rods 52 are arranged on two connecting plates 51 at the same side.

According to the above, it can be known that the connection assembly 5 can realize the integral box-in of the module unit after combining the two battery modules 4 into the module unit, so that the automatic production is easy to realize, and the material cost and the personnel production cost can be greatly reduced.

Example five

Based on the first, second, third and fourth embodiments, referring to fig. 3, the battery pack further includes an insulating sheet 8, in this embodiment, the total output position of the battery module 4 is located at the top of the battery module 4 (the total output position is defined as that the top of each cell of the battery module 4 is provided with a positive electrode terminal and a negative electrode terminal, and the positive and negative electrodes of the cells are arranged in series to form the total output position of the battery module 4), and the insulating sheet 8 is arranged at the top of the battery module 4 to prevent the total output position from being shorted with an external member; for example, in a general case where the aluminum row 7 is provided on the top of the total output position, it is known that the insulating sheet 8 is provided between the total output position and the aluminum row 7 to insulate the aluminum row 7 from the total output position; preferably, the insulating sheet 8 is, but not limited to, pc (polycarbonate) material.

Example six

On the basis of the first, second, third, fourth and fifth embodiments, referring to fig. 4, 5 and 6, the battery pack further includes a case 10, the case 10 includes a case base 101 and a case cover 102, the case cover 102 covers the case base 101 to form an installation space therebetween, and the heat dissipation structure, the battery module 4, the connection assembly 5, the end plate 6, the aluminum row 7 and the insulation sheet 8 are all disposed in the installation space.

Further, to facilitate handling of the battery pack, the case 10 is provided with a handle 14; specifically, the handles 14 are respectively disposed at two ends of the box base 101, and the handles 14 may be conventional U-shaped handles.

Preferably, in order to make the overall appearance of the handle 14 and the box seat 101 uniform, the U-shaped handle 14 and the box seat 101 have the same height and the same width, and in this case, for better gripping, a gripping hole 141 is preferably formed in the middle of the handle 14; in this embodiment, a thickening protrusion 142 is disposed on at least a portion of the side wall of the periphery of the grip hole 141, preferably, the thickening protrusion 142 is disposed on the inner side of the handle 14, and the thickening protrusion 142 is disposed at least on the upper edge of the grip hole 141; optimally, the thickened protrusions 142 are annularly arranged on all edges of the grip hole 141, and the provision of the thickened protrusions 142 strengthens the edge strength of the grip hole 141.

Example seven

In order to achieve connection between the plurality of battery packs, the battery pack further includes a quick connector 13, and the quick connector 13 is disposed in the case 10 and connected with the battery module 4, as shown in fig. 4, 5 and 6.

Specifically, as known in the art, the battery pack includes a battery management system connected to the battery module 4, the semiconductor refrigeration sheet 9, etc., and the quick connector 13 may be a conventional male connector or a conventional female connector by wire connection.

In this embodiment, for example, when the number of connection female seats of one battery pack is one, the connection female seats are arranged on the case cover 102, the connection female seats are connected with the battery management system through a flat cable, in addition, two connection male seats are connected through a flat cable to form a fast wiring row, one connection male seat is inserted into the connection female seat on the case cover 102 of one battery pack, and the other connection male seat is inserted into the connection female seat of the case cover 102 of the other battery pack, so as to complete connection of two battery packs; when the number of the connection female seats of one battery pack is two, one connection female seat is arranged on the box cover 102, the other connection female seat is arranged in the box seat 101 and is connected with the battery management system 16, the two connection female seats of the same battery pack are connected through the quick wire row, and likewise, the connection female seats on the box covers 102 of the two battery packs are also connected through the quick wire row; as can be seen from the above, the provision of the quick connector 13 allows for quick connection and disconnection between the battery packs.

In particular, to facilitate the installation of the quick insert 13 on the cover 102, the cover 102 is provided at the top with an installation site 15; specifically, the case cover 102 is provided with an installation opening, a surrounding baffle protrusion is arranged on the periphery of the installation opening, the middle of the surrounding baffle protrusion is the installation position, and preferably, the quick plug-in 13 is detachably installed in the installation opening through a screw.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A heat dissipation structure, comprising:

a heat dissipation unit (1);

the heat dissipation part (1) comprises a first heat dissipation module (11) and a second heat dissipation module (12), the first heat dissipation module (11) is communicated with the second heat dissipation module (12), and the first heat dissipation module (11) and the second heat dissipation module (12) are arranged between two adjacent battery modules (4);

the heat insulation structure (2) is arranged between the first heat dissipation module (11) and the second heat dissipation module (12) and is used for isolating heat transfer between the first heat dissipation module (11) and the second heat dissipation module (12).

2. A heat dissipating structure according to claim 1, wherein said heat insulating structure (2) is a heat insulating plate or a heat insulating gap;

the middle part of the heat insulating plate is of a hollow structure.

3. A heat dissipating structure according to claim 2, wherein the heat dissipating part (1) is a heat dissipating tube comprising a first pipe, a second pipe and a connecting pipe;

one end of the connecting pipe is connected with one end of the first pipeline, and the other end of the connecting pipe is connected with one end of the second pipeline;

the first pipeline is arranged on one side of the heat insulation structure (2), and the second pipeline and the first pipeline are oppositely arranged on the other side of the heat insulation structure (2).

4. A heat dissipating structure according to claim 3, wherein said first conduit and/or said second conduit is a reciprocating bent structure.

5. A heat dissipating structure according to claim 3, wherein said first conduit and/or said second conduit are embedded in said heat shield.

6. A heat dissipation structure according to claim 3, wherein the end of the first pipe remote from the connection pipe and the end of the second pipe remote from the connection pipe are located at the same end of the same battery module (4).

7. The heat dissipation structure as recited in claim 1, characterized in that a heat conductive sheet (3) is provided between the first heat dissipation module (11) and the nearby battery module (4);

and/or a heat conducting sheet (3) is arranged between the second heat dissipation module (12) and the nearby battery module (4).

8. The heat dissipation structure according to claim 1, further comprising a semiconductor cooling fin (9), the semiconductor cooling fin (9) being disposed on a side wall of the battery module (4).

9. A battery pack, characterized by comprising the heat radiation structure according to any one of claims 1 to 8, at least two battery modules (4) arranged in sequence;

the heat dissipation structure is arranged between two adjacent battery modules (4).

10. The battery pack according to claim 9, further comprising end plates (6), wherein the end plates (6) are provided at both ends of the battery module (4), respectively.