CN220042146U

CN220042146U - Battery module and electronic equipment

Info

Publication number: CN220042146U
Application number: CN202320440544.4U
Authority: CN
Inventors: 刘辉
Original assignee: Anker Innovations Co Ltd
Current assignee: Anker Innovations Co Ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-11-17
Anticipated expiration: 2033-03-09

Abstract

The utility model discloses a battery module and electronic equipment, the battery module includes: a base; the battery pack is arranged on the base and comprises a plurality of electric cores; the heat dissipation assembly comprises a first heat radiator, a second heat radiator and a heat dissipation plate, wherein the heat dissipation plate is arranged on one side of the battery pack, which is away from the base, the first heat radiator and the second heat radiator are arranged on one side of the heat dissipation plate, which is away from the battery pack, and the first heat radiator and the second heat radiator are arranged at intervals along a first direction, and a heat dissipation air channel is formed between the first heat radiator and the second heat radiator; the first direction is the arrangement direction of a plurality of battery cells. According to the utility model, the battery pack is clamped between the base and the radiating plate, the heat generated by the battery pack is uniformly distributed through the radiating plate, and the heat dissipation of the battery module is further realized through the first radiator and the second radiator which are arranged on the radiating plate and the radiating air channel formed by the first radiator and the second radiator.

Description

Battery module and electronic equipment

Technical Field

The present utility model relates to battery modules, and particularly to a battery module and an electronic device.

Background

For electronic devices, energy storage products, such as energy storage batteries, are an integral part thereof. In order to pursue higher energy density, the most important means is to increase the capacity of the single battery cell, but meeting both the energy requirement and the high-rate charge and discharge requirement necessarily causes serious heating of the battery cell.

In the prior art, heat is absorbed and conducted to a heat dissipation plate by sticking a heat dissipation material to the two pole end surfaces of the battery cell, and then heat dissipation is completed by air cooling or liquid cooling, or a fan is directly arranged in the direction of the two pole end surfaces of the battery cell to conduct air cooling heat dissipation by utilizing a battery cell grouping gap, so that the heat dissipation problem of the battery cell is solved. However, because the heat absorption and conduction of the two poles of the battery cell is limited by the small areas of the two poles of the battery cell, the end face is uneven due to the fact that the electric connection piece is arranged, the actual contact area is limited, and the heat dissipation efficiency is low; moreover, due to the requirement of energy density, the battery cells are limited in grouping clearance, the direct blowing channel of the fan is narrow and long, the middle of the direct blowing channel is also blocked by the electric connection sheet, the heat dissipation efficiency is not high, and the problem of large temperature difference of the battery cells is easily caused.

Disclosure of Invention

The present utility model provides at least a battery module and an electronic device for solving the above problems in the prior art.

The first aspect of the present utility model provides a battery module, comprising:

a base;

the battery pack is arranged on the base and comprises a plurality of electric cores;

the heat dissipation assembly comprises a first heat radiator, a second heat radiator and a heat dissipation plate, wherein the heat dissipation plate is arranged on one side of the battery pack, which is away from the base, the first heat radiator and the second heat radiator are arranged on one side of the heat dissipation plate, which is away from the battery pack, and the first heat radiator and the second heat radiator are arranged at intervals along a first direction, and a heat dissipation air channel is formed between the first heat radiator and the second heat radiator; the first direction is the arrangement direction of a plurality of battery cells.

Optionally, the heat dissipation assembly includes two second heat sinks, and the two second heat sinks are sequentially disposed on the heat dissipation plate along a second direction, wherein the second direction is perpendicular to the first direction.

Optionally, the first radiator includes a fan bracket and a cooling fan, and the cooling fan is fixedly disposed on the cooling plate through the fan bracket.

Optionally, the battery module further includes BMS protection board and BMS insulation board, heating panel, BMS insulation board and BMS protection board stack gradually and set up.

Optionally, be provided with a plurality of MOS pipes on the BMS protection shield, battery module still includes a plurality of connection nickel pieces, connects the nickel piece and is used for realizing the serial-parallel electrical connection between a plurality of electric cores to and be used for connecting different electric cores and MOS pipe.

Optionally, the battery module further includes the contravariant board, and the contravariant board is folded and is located on the BMS protection shield, with BMS protection shield electrical connection, and BMS protection shield and contravariant board all are located the heat dissipation wind channel scope that forms between first radiator and the second radiator.

Optionally, the heating panel includes heat dissipation aluminum plate and heat pipe, is provided with the storage tank on the heat dissipation aluminum plate, and the heat pipe pressfitting is in the storage tank.

Optionally, the base is formed with first imitative groove, and the heating panel is close to the one side of base and is formed with the second imitative groove, and the surface in first imitative groove is unanimous with the shape of group battery near base one side, and the surface in second imitative groove is unanimous with the shape of group battery near heating panel one side.

Optionally, the battery module further includes a heat-conducting silicone sheet, and the heat-conducting silicone sheet is sandwiched between the second imitation groove and the battery pack.

A second aspect of the present utility model provides an electronic device comprising a battery module as described above.

The beneficial effects of the utility model are as follows: compared with the prior art, the battery pack is clamped by the base and the radiating plate, and compared with the prior art, the battery pack is clamped by the radiating material tightly attached to the two end faces of the battery core, so that the contact area between the radiating plate and the battery pack is increased, and the transfer efficiency of heat of the battery pack to the radiating plate can be effectively improved; secondly, the heat generated by the battery pack is uniformly distributed through the heat dissipation plate, and the heat dissipation of the battery module can be realized through the first radiator and the second radiator which are arranged on the heat dissipation plate and the heat dissipation air channel formed by the first radiator and the second radiator; meanwhile, the radiating air duct is positioned on one side of the radiating plate, away from the battery pack, and a plurality of electric cores of the battery pack are not needed, so that the problem that the radiating efficiency is low due to limited clearance between the electric cores in groups is solved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a first structural schematic view of an embodiment of a battery module according to the present utility model;

fig. 2 is a second structural schematic view of an embodiment of the battery module according to the present utility model;

fig. 3 is a schematic view of a third structure of an embodiment of a battery module according to the present utility model;

FIG. 4 is a schematic view of a base according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a heat dissipating plate according to an embodiment of the present utility model;

FIG. 6 is a schematic view of another embodiment of a heat dissipating plate according to the present utility model;

fig. 7 is a schematic structural diagram of an embodiment of the electronic device of the present utility model.

Detailed Description

In order to enable those skilled in the art to better understand the technical scheme of the utility model, the battery module and the electronic device provided by the utility model are further described in detail below with reference to the accompanying drawings and the detailed description. It is to be understood that the depicted embodiments are only some, but not all, of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "first," "second," and the like in this disclosure are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The utility model provides a battery module, which solves the problems of low heat dissipation efficiency of a battery cell and large temperature difference of the battery cell in the prior art. Referring to fig. 1 to 3, fig. 1 is a first structural diagram of an embodiment of a battery module according to the present utility model, fig. 2 is a second structural diagram of an embodiment of a battery module according to the present utility model, and fig. 3 is a third structural diagram of an embodiment of a battery module according to the present utility model. As shown in fig. 1 to 3, the battery module 1 includes a base 10, a battery pack 20, and a heat dissipation assembly 30.

Specifically, the battery pack 20 is mounted on the base 10, and the battery pack 20 includes a plurality of battery cells 21. Optionally, in this embodiment, the battery cells 21 may specifically be large cylindrical battery cells, where the large cylindrical battery cells have a larger capacity, and the group gaps are reduced compared to the group gaps of small cylindrical battery cells, so that the volume density of the battery module 1 can be improved.

Referring to fig. 4 in combination with fig. 1-3, fig. 4 is a schematic structural view of an embodiment of the base of the present utility model. As shown in fig. 4, the base 10 is formed with a first profiling groove 11, and the surface of the first profiling groove 11 is consistent with the shape of the battery pack 20 on the side close to the base 10, that is, the first profiling groove 11 is a profiling design for referencing the shape of a part of the outer surface of the battery pack 20, so that when the battery pack 20 is mounted on the base 10, large-area lamination of the battery pack 20 and the first profiling groove 11 can be realized, and fixing and limiting of the base 10 to the battery pack 20 can be realized.

As shown in fig. 1-3, the heat dissipating assembly 30 of the present embodiment includes a first heat sink 31, a second heat sink 32, and a heat dissipating plate 33, where the heat dissipating plate 33 is disposed on a side of the battery pack 20 facing away from the base 10, that is, the battery pack 20 is sandwiched between the heat dissipating plate 33 and the base 10.

Referring to fig. 5 in combination with fig. 1-3, fig. 5 is a schematic structural diagram of an embodiment of a heat dissipating plate 33 according to the present utility model. As shown in fig. 5, a second molding groove 331 is formed on the side of the heat dissipation plate 33 near the base 10, and the surface of the second molding groove 331 is identical to the shape of the battery pack 20 near the heat dissipation plate 33. Alternatively, the material of the heat dissipation plate 33 in this embodiment is an aluminum plate, and the heat dissipation plate 33 may be formed by an aluminum extrusion process.

In this embodiment, the second profiling groove 331 is a profiling arrangement with reference to the shape of the outer surface of another part of the battery pack 20, and may be specifically circular arc-shaped when the battery pack 20 includes only one battery core 21, and may be specifically circular arc-shaped when the battery pack 20 includes a plurality of battery cores 21 arranged side by side, as shown in fig. 5, which are connected side by side, so that the contact surface between the second profiling groove 331 and the plurality of battery cores 21 is larger, and the overall heat transfer and heat dissipation efficiency of the battery module 1 can be improved.

Further, as shown in fig. 5 and 1, two half hole sites 331 are respectively disposed on two sides of the heat dissipation plate 33 along the second direction Y, and specifically may be disposed at two ends of the heat dissipation plate 33 along the first direction X at intervals, and the half hole sites 331 in this embodiment are used for fixing the entire battery module 1 and the external casing.

Referring to fig. 5 in combination with fig. 3, as shown in fig. 3, the battery module 1 of the present embodiment further includes a heat-conducting silicone sheet 40, and the heat-conducting silicone sheet 40 is sandwiched between the second molding groove 331 and the battery pack 20.

Specifically, the heat-conducting silicone sheet 40 of the present embodiment is sheet-shaped, and the heat-conducting silicone sheet 40 is made of soft rubber, and can be shaped according to the assembly requirement, and is attached to the outer walls of the plurality of electrical cores 21 and the second molding grooves 331. Wherein, heat conduction silica gel piece 40 pre-compaction cooperation can be better with the heat transfer that each electric core 21 produced to heating panel 33 between a plurality of electric cores 21 and heating panel 33, plays better heat conduction effect, also can form the cushioning effect to electric core 21 simultaneously, prevents to take place electric core 21 thermal deformation and take place wearing and tearing with heating panel 33, the unable problem of closely laminating.

Referring to fig. 6 in combination with fig. 5, fig. 6 is a schematic structural diagram of another embodiment of the heat dissipating plate according to the present utility model. Based on the above embodiment, the heat dissipation plate 33 may further include a heat dissipation aluminum plate 332 and a heat pipe 334, wherein the heat dissipation aluminum plate 332 is provided with a receiving groove 333, and the heat pipe 334 is pressed into the receiving groove 333. The heat pipe 334 can further improve the overall heat dissipation efficiency of the battery module 1.

Specifically, the heat pipe 334 is pressed into the accommodating groove 333 by brazing, so as to ensure sufficient contact with the heat dissipating aluminum plate 332. Alternatively, in the present embodiment, the number of the heat pipes 334 may be two, that is, two accommodating grooves 333 are provided on the heat dissipating aluminum plate 332, and the two accommodating grooves 333 are respectively disposed at intervals along the length direction of the heat dissipating plate 33. With this arrangement, each heat pipe 334 can be ensured to exchange heat with the plurality of battery cells 21, and the heat dissipation efficiency of the battery module 1 as a whole can be further improved.

Alternatively, in other embodiments, the number of the heat pipes 334 may be selected to be one or more according to the amount of heat generated during the operation of the battery module 1.

As shown in fig. 1 and 2, the first heat sink 31 and the second heat sink 32 are disposed on a side of the heat dissipation plate 33 away from the battery pack 20, and the first heat sink 31 and the second heat sink 32 are disposed at intervals along a first direction X, where the first direction X is an arrangement direction of the plurality of electric cells 21. Specifically, the first heat sink 31 and the second heat sink 32 are disposed on the heat dissipation plate 33, and are disposed at intervals along the first direction X on opposite ends of the heat dissipation plate 33.

As shown in fig. 1-3, the first radiator 31 includes a fan bracket 312 and a cooling fan 311, the cooling fan 311 is fixedly disposed on the cooling plate 33 through the fan bracket 312, and the cooling fan 311 of the embodiment provides cooling wind support for the whole battery module 1, so as to realize accelerated adjustment of the temperature of the internal and external environments.

Specifically, the heat dissipation plate 33 may be provided with a screw hole, the fan bracket 312 may be disposed through a screw fit with the screw hole, and the heat dissipation fan 311 is locked on the heat dissipation plate 33, where the fan bracket 312 and the heat dissipation fan 311 may be fixed to each other through a screw hole and a stud, or a blind hole and a blind post.

As shown in fig. 1 to 3, the heat dissipation assembly 30 may include two second heat sinks 32, and the two second heat sinks 32 are sequentially disposed on the heat dissipation plate 33 along a second direction Y, where the second direction Y is perpendicular to the first direction X, and the second direction Y may specifically be a length direction of the battery cell 21.

Specifically, the second heat sinks 32 are fixed on the heat dissipation plate 33 by screws, and two parallel second heat sinks 32 are provided, so that the deformation of the single second heat sink 32 can be ensured to be small, that is, each second heat sink 32 can be in close contact with the heat dissipation plate 33, and the overall heat dissipation efficiency of the battery module 1 can be improved.

As shown in fig. 1-3, a heat dissipation air duct 34 is formed between the first heat sink 31 and the second heat sink 32, that is, the heat dissipation air duct 34 is located on one side of the heat dissipation plate 33 away from the battery pack 20, and does not need to pass through a plurality of battery cells 21 of the battery pack 20, in this embodiment, the problem of low heat dissipation efficiency caused by limited battery cell 21 grouping gaps does not exist, and because the heat dissipation air duct 34 does not pass through the battery pack 20, the embodiment can select the battery cells 21 with smaller battery cell grouping gaps, so as to improve the energy density of the battery module 1.

Optionally, the second radiator 32 of the present embodiment may include a plurality of radiating fins, where the radiating fins can form a high radiating area, and cooperate with the radiating air duct 34 formed by the first radiator 31 facing the second radiator 32 to form a direct and efficient radiating system.

As shown in fig. 3, the battery module 1 of the present embodiment further includes a plurality of connection nickel plates 50, and the connection nickel plates 50 are used to realize serial-parallel electrical connection between the plurality of battery cells 21. Specifically, referring to fig. 1 and 2, the connection nickel tab 50 is used to connect the positive terminals of two adjacent cells 21 or to connect the negative terminals of two adjacent cells 21.

As shown in fig. 3, the battery module 1 of the present embodiment further includes a BMS protection plate 60 (Battery Management System ) and a BMS insulation plate 70, and the heat dissipation plate 33, the BMS insulation plate 70, and the BMS protection plate 60 are sequentially stacked. The BMS insulating plate 70 and the BMS protecting plate 60 may be fastened to the heat dissipation plate 33 through screw holes and screws.

Specifically, the BMS protection plate 60 mainly monitors the assembled battery 20 and realizes functions of charge and discharge; the BMS insulating board 70 is clamped between the BMS protection board 60 and the heat dissipation board 33, and mainly plays an insulating role, and forms an insulating partition between the heat dissipation assembly 30 and the BMS protection board 60, so that the short circuit of elements on the BMS protection board 60 caused by the electric charge of the heat dissipation assembly 30 connected with the battery pack 20 is prevented.

As shown in fig. 3, the BMS protection plate 60 of the present embodiment is provided with a plurality of MOS tubes 61, and the connection nickel plate 50 is also used for connecting different battery cells 21 and the MOS tubes 61. Specifically, the connection nickel piece 50 may be electrically connected to the MOS transistor 61 through a lead.

As shown in fig. 3, the battery module 1 of the present embodiment further includes an inverter board 80, the inverter board 80 is stacked on the BMS protection board 60 and electrically connected with the BMS protection board 60, and both the BMS protection board 60 and the inverter board 80 are located within the range of the heat dissipation air duct 34 formed between the first heat sink 31 and the second heat sink 32. The inverter board 80 of the present embodiment mainly functions to realize charge and discharge for switching between ac and dc. The inverter plate 80 may be fastened to the BMS protection plate 60 through screw holes and screws.

In the whole, the inverter board 80, the BMS protection board 60, the BMS insulation board 70, the first heat sink 31, and the second heat sink 32 are directly or indirectly fixed to the heat dissipation plate 33. Meanwhile, the battery core 21, the BMS protection plate 60 and the inverter plate 80 generate heat during operation due to the requirement of high-rate charge and discharge, i.e. generate a certain amount of heat, and the heat dissipation assembly 30 must be utilized to dissipate heat due to the requirement of a group of spaces. As can be seen from fig. 1 and 2, the battery cell 21, the BMS protection plate 60 and the inverter plate 80 of the present embodiment are located within the range of the heat dissipation air duct 34 formed by the first heat sink 31 and the second heat sink 32, i.e. the heat dissipation of all heat generating components can be realized through the first heat sink 31 and the second heat sink 32, and the heat dissipation is direct and efficient.

As shown in fig. 3, the base 10 of the present embodiment further includes a support 12, wherein the support 12 may be a plastic support 12, and has an insulating effect. Specifically, the bracket 12 serves as a main fixing limiter of the battery cell 21, and also serves to support the inverter board 80. The support 12 is provided with a screw hole, a rivet nut column is arranged on one side of the heat dissipation plate 33 close to the battery core 21, the screw hole is correspondingly arranged with the rivet nut column, and the heat dissipation plate 33 and the base 10 are mutually fixed through the screw, the rivet nut column and the screw hole.

Alternatively, the number of the brackets 12 in the present embodiment may be five, where four brackets 12 are respectively disposed at four top corners of the base 10, and a fifth bracket 12 is disposed on a central axis of the base 10 in the length direction and is spaced from two adjacent brackets 12 along the first direction X.

Specifically, the assembly process of the battery module 1 may be as follows:

1. the plurality of battery cells 21 are welded with the plurality of connection nickel tabs 50 by spot welding to form the battery pack 20.

2. The battery pack 20 is mounted on the base 10, and is specifically placed in the first molding groove 11 of the base 10.

3. The heat conductive silicone sheet 40 is placed above the battery cell 21 so as to be attached to the battery cell 21, and one side of the heat dissipation plate 33 having the second molding groove 331 is covered on the heat conductive silicone sheet 40 to fix the heat dissipation plate 33 and the base 10.

4. The BMS insulating plate 70 is attached to the heat dissipation plate 33 in sequence, and the BMS insulating plate 70 is attached to the BMS insulating plate for protection, and the locking is achieved through screws.

5. The plurality of connection nickel plates 50 are welded to the MOS tube 61 on the BMS protection plate 60, and the connection nickel plates 50 are electrically connected to the BMS protection plate 60.

6. The inverter board 80 is fastened to the bracket 12 of the base 10 by screws.

7. The first heat sink 31 and the second heat sink 32 are fastened to the heat dissipation plate 33 by screws, thereby completing the whole assembly.

According to the utility model, one side of each of the base 10 and the heat dissipation plate 33 is designed in a profiling way according to the shape of the battery pack 20, so that the contact area between the heat dissipation assembly 30 and each cell 21 can be effectively increased, the heat conduction contact between each cell 21 is maximized, the high-efficiency heat conduction efficiency is formed, meanwhile, the heat of all the cells 21 in the battery module 1 is absorbed on the same heat dissipation plate 33, the temperature difference between the cells 21 is small, and the consistency of a plurality of cells 21 in the battery module 1 can be improved. The heat dissipation plate 33 further conducts heat to the first heat sink 31 and the second heat sink 32, and the high heat dissipation area formed by the heat dissipation fins of the second heat sink 32 is matched with the heat dissipation fan 311 and the heat dissipation air duct 34 of the first heat sink 31, so that a set of direct and efficient heat dissipation system is formed. Meanwhile, the heat pipe 334 is further disposed on the heat dissipation plate 33, so that the overall heat dissipation effect of the battery module 1 can be improved.

On the other hand, the heat dissipation plate 33 is fixed with the support 12 of the base 10 to complete the limiting of each battery cell 21, and the heat conduction silica gel sheet 40 in the middle of the heat dissipation plate 33 and each battery cell 21 enables the battery cell 21 to form soft contact with the heat dissipation plate 33, so that the battery cell 33 has good close contact effect, and meanwhile, the battery cell 21 is buffered, the BMS insulating plate 70, the BMS protecting plate 60 and the inverter plate 80 are sequentially laminated above the heat dissipation plate 33, the battery module 1 is compact in group, and space utilization is efficient.

The utility model also provides an electronic device, referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of the electronic device of the utility model. As shown in fig. 7, the electronic device 100 includes a battery module 101 and a load module 102, wherein the battery module 101 is the battery module 1 according to any of the above embodiments. Specifically, the load module 102 is connected to the battery module 101, and operates based on alternating current or direct current generated by the battery module 101.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present utility model and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the utility model.

Claims

1. A battery module, comprising:

a base;

2. The battery module of claim 1, wherein the heat dissipation assembly comprises two second heat sinks, and the two second heat sinks are sequentially disposed on the heat dissipation plate along a second direction, wherein the second direction is perpendicular to the first direction.

3. The battery module according to claim 1, wherein the first heat sink includes a fan bracket and a heat radiation fan fixedly disposed on the heat radiation plate through the fan bracket.

4. The battery module according to any one of claims 1 to 3, further comprising a BMS protection plate and a BMS insulation plate, the heat dissipation plate, the BMS insulation plate, and the BMS protection plate being sequentially stacked.

5. The battery module according to claim 4, wherein the BMS protection plate is provided with a plurality of MOS transistors, the battery module further comprises a plurality of connection nickel plates, the connection nickel plates are used for realizing serial-parallel electrical connection between a plurality of the battery cells, and are used for connecting different battery cells with the MOS transistors.

6. The battery module of claim 4, further comprising an inverter plate stacked on the BMS protection plate and electrically connected to the BMS protection plate, wherein the BMS protection plate and the inverter plate are both located within a heat dissipation air duct formed between the first heat sink and the second heat sink.

7. The battery module according to claim 1, wherein the heat dissipation plate comprises a heat dissipation aluminum plate and a heat pipe, the heat dissipation aluminum plate is provided with a containing groove, and the heat pipe is pressed in the containing groove.

8. The battery module according to claim 1, wherein the base is formed with a first imitation groove, a second imitation groove is formed on a side of the heat dissipation plate close to the base, a surface of the first imitation groove is identical to a shape of the battery pack on a side close to the base, and a surface of the second imitation groove is identical to a shape of the battery pack on a side close to the heat dissipation plate.

9. The battery module of claim 8, further comprising a thermally conductive silicone sheet sandwiched between the second contoured slot and the battery pack.

10. An electronic device comprising the battery module according to any one of claims 1 to 9.