Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment. The battery pack comprises a tray and a battery pack body, a battery module; the cooler is connected to the tray, one side, adjacent to the battery module, of the cooler is coated with heat-conducting glue, and the battery module is adhered to the cooler through the heat-conducting glue. The cooler is arranged on the tray, and the heat-conducting glue is arranged between the cooler and the battery module, so that the connection between the battery module and the cooler is more stable, heat exchange can be better carried out between the battery module and the cooler, and the battery module can be cooled conveniently; and under the condition of ensuring the strength of the tray, structural parts in the battery pack are reduced, the quality of the tray is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric equipment, in particular to a battery pack and electric equipment. Background Art

[0002] In the related art, a support plate is usually provided inside the battery pack to bear the weight of the battery module, which increases the number of structural members of the battery pack in the first direction, causing the battery pack to be larger in the first direction, thereby increasing the weight of the battery pack and raising the cost. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery pack, which can make the connection between the battery module and the cooler more stable, so that the heat exchange between the battery module and the cooler can be better, thereby facilitating the cooling of the battery module, and can reduce the structural parts in the battery pack while ensuring the strength of the tray, reduce the quality of the tray, and reduce the cost.

[0004] The utility model further proposes an electric device.

[0005] According to the utility model, the battery pack includes: a tray; a battery module; a cooler, wherein the cooler is connected to the tray, a side of the cooler adjacent to the battery module is coated with thermal conductive adhesive, and the battery module is bonded to the cooler through the thermal conductive adhesive.

[0006] According to the battery pack of the utility model, by arranging the cooler on the tray and arranging the thermal conductive adhesive between the cooler and the battery module, the connection between the battery module and the cooler can be made more stable, so that the heat exchange between the battery module and the cooler can be better, thereby facilitating the cooling of the battery module, and while ensuring the strength of the tray, the structural parts in the battery pack can be reduced, the mass of the tray can be reduced, and the cost can be reduced.

[0007] In some examples of the present invention, the battery module has a first direction, a second direction and a third direction, the battery module is connected to the cooler along the first direction, the thermal conductive adhesive is applied to the cooler along the second direction and the third direction, and the first direction, the second direction and the third direction are arranged perpendicularly in pairs.

[0008] In some examples of the present invention, the thermal conductive adhesive includes: a first thermal conductive adhesive and a second thermal conductive adhesive, the first thermal conductive adhesive is applied on the cooler along a second direction, the second thermal conductive adhesive is applied on the cooler along a third direction, and the second thermal conductive adhesive is located on both sides of multiple first thermal conductive adhesives.

[0009] In some examples of the present invention, in the second direction, the size of the second thermally conductive adhesive is a, and in the third direction, the size of the first thermally conductive adhesive is b, and the relationship between a and b is: a≥b.

[0010] In some examples of the present invention, the value ranges of a and b are: 6mm≤a≤10mm, 5mm≤b≤7mm.

[0011] In some examples of the present invention, the battery module includes: single cells, and the single cells are connected to the cooler along the second direction through the first thermal conductive adhesive and the second thermal conductive member respectively.

[0012] In some examples of the present invention, the single battery has a bonding surface, and in the third direction, the size of the first thermally conductive adhesive is smaller than the size of the bonding surface, and the first thermally conductive adhesive is located in the middle of the bonding surface.

[0013] In some examples of the present invention, there are a plurality of first thermally conductive adhesives, and the plurality of first thermally conductive adhesives are spaced apart along the third direction; there are a plurality of second thermally conductive adhesives, and the plurality of second thermally conductive adhesives are spaced apart along the second direction.

[0014] In some examples of the present invention, in the first direction, the size of the thermal conductive adhesive is h1, and the value range of h1 is: 0.2mm≤h1≤0.8mm.

[0015] In some examples of the present invention, a cross beam and a longitudinal beam are provided on a side of the tray facing the battery module, and the cross beam and the longitudinal beam are respectively connected to the cooler.

[0016] In some examples of the present invention, the battery pack further includes: a cover plate, wherein the cover plate is disposed on a side of the tray adjacent to the battery module.

[0017] In some examples of the present invention, the battery pack further includes: a structural adhesive, wherein the structural adhesive is coated on a side of the battery module adjacent to the cover plate, and the cover plate is bonded to the battery module through the structural adhesive.

[0018] In some examples of the present invention, in the first direction, the size of the structural adhesive is h2, and the value range of h2 is: 0.5mm≤h2≤0.9mm.

[0019] In some examples of the present invention, the structural adhesive includes: a first structural adhesive and a second structural adhesive, the first structural adhesive is applied on the battery module along a second direction, the second structural adhesive is applied on the battery module along a third direction, and the second structural adhesive is located on both sides of multiple first structural adhesives.

[0020] In some examples of the present invention, in the second direction, the size of the second structural adhesive is c, and in the third direction, the size of the first structural adhesive is d, and the relationship between c and d is: c≥d.

[0021] In some examples of the present invention, there are a plurality of first structural adhesives, and the plurality of first structural adhesives are spaced apart along the third direction; there are a plurality of second structural adhesives, and the plurality of second structural adhesives are spaced apart along the second direction.

[0022] In some examples of the present invention, the cover plate is a metal structural member.

[0023] In some examples of the present invention, the battery pack further includes: a lower guard plate, which is arranged on a side of the tray away from the battery module.

[0024] In some examples of the present invention, the lower guard plate is a glass fiber and steel plate member, and the glass fiber and steel plate member is riveted to the tray.

[0025] The electric device according to the utility model comprises: the battery pack mentioned above.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is an exploded view of a battery pack according to an embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of the structure of the pallet;

[0030] Figure 3 This is a schematic diagram of the coating of thermal conductive adhesive;

[0031] Figure 4 It is a schematic diagram of the coating of structural adhesive.

[0032] Reference numerals:

[0033] 1. Battery pack;

[0034] 10. Tray; 11. Crossbeam; 12. Longitudinal beam; 20. Battery module; 30. Cooler; 40. Thermally conductive adhesive; 41. First thermally conductive adhesive; 42. Second thermally conductive adhesive; 50. Cover plate; 60. Structural adhesive; 61. First structural adhesive; 62. Second structural adhesive; 70. Lower guard plate. DETAILED DESCRIPTION

[0035] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0036] Reference below Figure 1-Figure 4 A battery pack 1 according to an embodiment of the present invention is described. The battery pack 1 can be arranged on a vehicle to supply power to corresponding electrical devices on the vehicle.

[0037] The battery pack 1 according to the embodiment of the utility model comprises: a tray 10, a battery module 20 and a cooler 30. The tray 10 mainly plays the role of support and installation. The battery module 20 is the main part of the battery pack 1, and mainly plays the role of power supply. The cooler 30 mainly plays the role of cooling.

[0038] like Figure 1 As shown, the cooler 30 is connected to the tray 10, and a side of the cooler 30 adjacent to the battery module 20 is coated with a thermally conductive adhesive 40, and the battery module 20 is bonded to the cooler 30 through the thermally conductive adhesive 40. The cooler 30 is connected to the tray 10, so that the cooler 30 can be fixed, so that the connection between the cooler 30 and the tray 10 is more stable. The thermally conductive adhesive 40 mainly plays the role of conducting heat. Since the thermally conductive adhesive 40 mainly conducts the heat of the battery module 20 for heat dissipation, the thermally conductive adhesive 40 is arranged on the side of the cooler 30 adjacent to the battery module 20, so that the arrangement is more reasonable, and it is convenient for the thermally conductive adhesive 40 to cooperate with the battery module 20. Specifically, the battery module 20 is bonded to the cooler 30 through the thermally conductive adhesive 40, so that the connection between the battery module 20 and the cooler 30 can be more stable, so that the battery module 20 can exchange heat with the cooler 30 through the thermally conductive adhesive 40, and then the battery module 20 can be cooled.

[0039] It should be noted that the cooler 30 is disposed on the tray 10 , so that the cooler 30 can replace the existing support plate structure, which can reduce the mass of the tray 10 while ensuring the strength of the tray 10 , and can reduce the number of structural components in the battery pack 1 .

[0040] Therefore, by setting the cooler 30 on the tray 10 and setting the thermal conductive adhesive 40 between the cooler 30 and the battery module 20, the connection between the battery module 20 and the cooler 30 can be made more stable, so that the heat exchange between the battery module 20 and the cooler 30 can be better, thereby facilitating the cooling of the battery module 20, and while ensuring the strength of the tray 10, the structural parts in the battery pack 1 can be reduced, the mass of the tray 10 can be reduced, and the cost can be reduced.

[0041] In addition, if Figure 1As shown, the battery module 20 has a first direction, a second direction and a third direction. The battery module 20 is connected to the cooler 30 along the first direction. The thermal conductive adhesive 40 is applied to the cooler 30 along the second direction and the third direction. The first direction, the second direction and the third direction are arranged vertically in pairs. Since the first direction is the main arrangement direction of the structural parts in the battery pack 1, the battery module 20 is connected to the cooler 30 along the first direction. This arrangement is more reasonable and convenient for the arrangement of the battery module 20 and the cooler 30, thereby facilitating the arrangement and arrangement of the battery pack 1.

[0042] The thermally conductive adhesive 40 is applied on the cooler 30 along the second direction and the third direction. It should be noted that the battery module 20 is bonded to the thermally conductive adhesive 40 along the second direction, and when the battery module 20 is bonded with the thermally conductive adhesive 40, different positions of the battery module 20 generate different stresses on the thermally conductive adhesive 40. Therefore, the thermally conductive adhesive 40 is applied on the cooler 30 along the second direction and the third direction, so that the thermally conductive adhesive 40 can better cooperate with different positions of the battery module 20, so that the thermally conductive adhesive 40 can better cooperate with the battery module 20, so that the bonding of the battery module 20 is more reliable and stable, and the heat dissipation performance of the cooler 30 can be improved to a certain extent.

[0043] Specifically, Figure 3 As shown, the thermal conductive adhesive 40 includes: a first thermal conductive adhesive 41 and a second thermal conductive adhesive 42, the first thermal conductive adhesive 41 is applied on the cooler 30 along the second direction, the second thermal conductive adhesive 42 is applied on the cooler 30 along the third direction, and the second thermal conductive adhesive 42 is located on both sides of the plurality of first thermal conductive adhesives 41. In other words, the arrangement direction of the first thermal conductive adhesive 41 is perpendicular to the arrangement direction of the second thermal conductive adhesive 42. It should be noted that when the battery module 20 is bonded to the cooler 30 through the thermal conductive adhesive 40, the stress generated on the thermal conductive adhesive 40 by the two sides of the battery module 20 is greater than the stress generated on the thermal conductive adhesive 40 by the middle position of the battery module 20. Moreover, the stress that the second thermal conductive adhesive 42 applied along the third direction can withstand is greater than the stress that the first thermal conductive adhesive 41 applied along the second direction can withstand. Therefore, the second thermally conductive adhesive 42 is located on both sides of the plurality of first thermally conductive adhesives 41 . This arrangement is more reasonable and can enable the thermally conductive adhesive 40 to better cooperate with different positions of the battery module 20 , thereby enabling the thermally conductive adhesive 40 to better cooperate with the battery module 20 .

[0044] Moreover, the arrangement of the first thermally conductive adhesive 41 and the second thermally conductive adhesive 42 can ensure more uniform bonding between the battery module 20 and the cooler 30, better heat dissipation effect, and can also improve the structural strength of the battery pack 1 in the second direction.

[0045] In addition, if Figure 3As shown, in the second direction, the size of the second thermally conductive adhesive 42 is a, and in the third direction, the size of the first thermally conductive adhesive 41 is b, and the relationship between a and b is: a ≥ b. That is, in the second direction, the width of the second thermally conductive adhesive 42 is greater than or equal to the width of the first thermally conductive adhesive 41, so that the second thermally conductive adhesive 42 can withstand a greater stress load than the first thermally conductive adhesive 41, so that it can better cooperate with both sides of the battery module 20.

[0046] Furthermore, if Figure 3 As shown, the value ranges of a and b are: 6mm≤a≤10mm, 5mm≤b≤7mm. That is to say, in the second direction, the size of the second thermally conductive adhesive 42 needs to meet a certain range, that is, the size of the second thermally conductive adhesive 42 needs to be greater than or equal to 6mm, so as to avoid a large gap between two adjacent second thermally conductive adhesives 42, which affects the bonding and heat conduction effects. The size of the second thermally conductive adhesive 42 also needs to be less than or equal to 10mm, so as to avoid overlapping and squeezing between two adjacent thermally conductive adhesives 40, which affects the uniformity of the thickness of the thermally conductive adhesive 40, thereby affecting the heat conduction effect of the thermally conductive adhesive 40, and can save thermally conductive adhesive 40.

[0047] In addition, if Figure 1 As shown, the battery module 20 includes a single battery, and the single battery is connected to the cooler 30 along the second direction through the first thermal conductive adhesive 41 and the second thermal conductive member. In other words, the battery module 20 is divided into a plurality of single batteries, and each single battery cooperates with the first thermal conductive adhesive 41 and the second thermal conductive adhesive 42 along the second direction, so that the plurality of single batteries can be connected to the cooler 30 through the first thermal conductive adhesive 41 and the second thermal conductive adhesive 42, so as to realize heat exchange between the single battery and the cooler 30, and further realize cooling of the battery module 20.

[0048] In addition, the single cell has a bonding surface. In the third direction, the size of the first thermally conductive adhesive 41 is smaller than the size of the bonding surface, and the first thermally conductive adhesive 41 is located in the middle of the bonding surface. The bonding surface mainly plays a role in bonding. In the third direction, the size of the first thermally conductive adhesive 41 is smaller than the size of the bonding surface, and the first thermally conductive adhesive 41 is located in the middle of the bonding surface, which can ensure that the first thermally conductive adhesive 41 can be stably connected to the single cell, so that the single cell can better exchange heat with the cooler 30, and the use of the first thermally conductive adhesive 41 can be reduced, saving costs.

[0049] Furthermore, if Figure 1As shown, there are multiple first thermally conductive adhesives 41, and the multiple first thermally conductive adhesives 41 are arranged at intervals along the third direction, and there are multiple second thermally conductive adhesives 42, and the multiple second thermally conductive adhesives 42 are arranged at intervals along the second direction. In other words, there are multiple first thermally conductive adhesives 41 and multiple second thermally conductive adhesives 42. It should be noted that each first thermally conductive adhesive 41 is bonded and matched with each single battery, and each single battery is bonded and matched with multiple second thermally conductive adhesives 42, so that the first thermally conductive adhesive 41 and the second thermally conductive adhesive 42 can be better bonded and matched with the single battery.

[0050] The plurality of first thermally conductive adhesives 41 are arranged at intervals along the third direction, so that interference between adjacent first thermally conductive adhesives 41 can be avoided, thereby facilitating bonding between the single battery and the first thermally conductive adhesives 41. Similarly, the plurality of second thermally conductive adhesives 42 are arranged at intervals along the second direction, so that interference between adjacent second thermally conductive adhesives 42 can be avoided, thereby enabling the second thermally conductive adhesives 42 to work better.

[0051] Specifically, Figure 3 As shown, in the first direction, the size of the thermally conductive adhesive 40 is h1, and the value range of h1 is: 0.2mm≤h1≤0.8mm. In other words, the size of the thermally conductive adhesive 40 in the first direction needs to meet a certain range, that is, the size of the thermally conductive adhesive 40 in the first direction needs to be greater than or equal to 0.2mm, so as to ensure that the thermally conductive adhesive 40 can meet the connection strength between the cooler 30 and the battery module 20, and has a good thermal conductivity effect. Of course, the size of the thermally conductive adhesive 40 in the first direction needs to be less than or equal to 0.8mm, so as to avoid the size of the thermally conductive adhesive 40 in the first direction being too large, thereby increasing the volume of the battery pack 1 and increasing the cost.

[0052] In addition, if Figure 2 As shown, a crossbeam 11 and a longitudinal beam 12 are provided on the side of the tray 10 facing the battery module 20, and the crossbeam 11 and the longitudinal beam 12 are respectively connected to the cooler 30. Among them, the crossbeam 11 and the longitudinal beam 12 can both play a connecting role. The crossbeam 11 and the longitudinal beam 12 are respectively connected to the cooler 30, so that the cooler 30 can be fixed, so that the connection between the cooler 30 and the tray 10 can be more reliable and stable. Moreover, the crossbeam 11 and the longitudinal beam 12 can also play a role in strengthening the structural strength of the tray 10 to a certain extent, so that the tray 10 is not easily damaged. The crossbeam 11 and the longitudinal beam 12 can be welded to the cooler 30 by stir friction welding.

[0053] In addition, if Figure 1As shown, the battery pack 1 also includes a cover plate 50, which is provided on the side of the tray 10 adjacent to the battery module 20. Among them, the cover plate 50 mainly serves as a sealing cover. The cover plate 50 is provided on the side of the tray 10 adjacent to the battery module 20, so that the cover plate 50 and the tray 10 can seal the internal battery module 20, thereby avoiding interference of the external environment with the battery module 20, and then the battery module 20 can work better. It should be noted that the battery pack 1 is connected to the vehicle body through the cover plate 50, so the cover plate 50 can play a load-bearing role and can bear the weight of the battery module 20, thereby reducing the structural parts of the battery pack 1 in the first direction and improving the space utilization in the first direction. And it can also improve the structural strength of the battery pack 1 in the second direction.

[0054] In addition, if Figure 1 As shown, the battery pack 1 also includes a structural adhesive 60, which is applied to the side of the battery module 20 adjacent to the cover plate 50, and the cover plate 50 is bonded to the battery module 20 through the structural adhesive 60. Among them, the structural adhesive 60 mainly plays a bonding role. The structural adhesive 60 is applied to the side of the battery module 20 adjacent to the cover plate 50, and the cover plate 50 is bonded to the battery module 20 through the structural adhesive 60. In this way, the cover plate 50 can be connected to the battery module 20 by using the structural adhesive 60, so that the connection stability between the cover plate 50 and the battery module 20 can be improved, and then the cover plate 50 can better play a load-bearing role for the battery module 20, and the battery pack 1 can work more stably.

[0055] In addition, if Figure 4 As shown, in the first direction, the size of the structural adhesive 60 is h2, and the value range of h2 is: 0.5mm≤h2≤0.9mm. In other words, the size of the structural adhesive 60 in the first direction needs to meet a certain range, that is, the size of the structural adhesive 60 in the first direction needs to be greater than or equal to 0.5mm, so as to ensure that the structural adhesive 60 can meet the connection strength between the battery module 20 and the cover plate 50, making the connection between the battery module 20 and the cover plate 50 more stable. Of course, the size of the structural adhesive 60 in the first direction also needs to be less than or equal to 0.9mm, so as to avoid the size of the structural adhesive 60 in the first direction being too large, thereby increasing the volume of the battery pack 1 and increasing the cost.

[0056] Furthermore, if Figure 4 As shown, the structural adhesive 60 includes: a first structural adhesive 61 and a second structural adhesive 62 . The first structural adhesive 61 is applied on the battery module 20 along the second direction, and the second structural adhesive 62 is applied on the battery module 20 along the third direction. The second structural adhesive 62 is located on both sides of the plurality of first structural adhesives 61 .

[0057] That is to say, the arrangement direction of the first structural adhesive 61 is perpendicular to the arrangement direction of the second structural adhesive 62. It should be noted that when the battery module 20 is bonded to the cover plate 50 through the structural adhesive 60, the stress generated on the structural adhesive 60 by the two sides of the battery module 20 is greater than the stress generated on the structural adhesive 60 by the middle position of the battery module 20. Moreover, the stress that the second structural adhesive 62 applied along the third direction can withstand is greater than the stress that the first structural adhesive 61 applied along the second direction can withstand. Therefore, the second structural adhesive 62 is located on both sides of the plurality of first structural adhesives 61. This arrangement is more reasonable, and can make the structural adhesive 60 better cooperate with different positions of the battery module 20, and further can make the structural adhesive 60 better cooperate with the battery module 20.

[0058] Moreover, the arrangement of the first structural adhesive 61 and the second structural adhesive 62 can ensure that the bonding between the battery module 20 and the cover plate 50 is more uniform, so that the battery pack 1 has better structural stress resistance.

[0059] Specifically, Figure 4 As shown, in the second direction, the size of the second structural adhesive 62 is c, and in the third direction, the size of the first structural adhesive 61 is d, and the relationship between c and d is: c ≥ d. That is, in the second direction, the width of the second structural adhesive 62 is greater than or equal to the width of the first structural adhesive 61, so that the second structural adhesive 62 can withstand a greater stress load than the first structural adhesive 61, so that it can better cooperate with the two sides of the battery module 20, so that the connection between the battery module 20 and the cover plate 50 is more stable.

[0060] In addition, if Figure 4 As shown, there are multiple first structural adhesives 61, and multiple first structural adhesives 61 are arranged at intervals along the third direction, and there are multiple second structural adhesives 62, and multiple second structural adhesives 62 are arranged at intervals along the second direction. In other words, multiple first structural adhesives 61 and second structural adhesives 62 are provided. Multiple first structural adhesives 61 are arranged at intervals along the third direction, which can avoid interference between adjacent first structural adhesives 61, thereby facilitating bonding between the single battery and the first structural adhesive 61. Similarly, multiple second structural adhesives 62 are arranged at intervals along the second direction, which can avoid interference between adjacent second structural adhesives 62, so that the second structural adhesives 62 can work better.

[0061] It should be noted that the above-mentioned thermal conductive adhesive 40 and structural adhesive 60 are both linear structures, and the area of ​​the thermal conductive adhesive 40 and structural adhesive 60 needs to cover at least 80% of the two side surfaces of the entire battery module 20 in the first direction to ensure that the battery module 20 can maintain a good bonding effect with both the cover plate 50 and the cooler 30.

[0062] In addition, the cover plate 50 is a metal structural member. Since metal generally has a greater structural strength, the cover plate 50 is constructed as a metal structural member, so that the cover plate 50 has a greater structural strength, and then the cover plate 50 can withstand a greater load, and the cover plate 50 can better bear the weight of the battery module 20 and is not easily damaged.

[0063] Furthermore, if Figure 1 As shown, the battery pack 1 also includes a lower guard plate 70, and the lower guard plate 70 is arranged on the side of the tray 10 away from the battery module 20. Among them, the lower guard plate 70 mainly plays a protective role. The lower guard plate 70 is arranged on the side of the tray 10 away from the battery module 20, so that the lower guard plate 70 can be fixed, so that the connection between the lower guard plate 70 and the tray 10 can be more stable, so that the lower guard plate 70 can better protect the tray 10, and the battery pack 1 can work better. It should be noted that foaming material, such as MPP (modified polypropylene), can also be added between the lower guard plate 70 and the tray 10.

[0064] Specifically, the lower guard plate 70 is a glass fiber plus steel plate, and the glass fiber plus steel plate is riveted to the pallet 10. The composite material of the glass fiber plus steel plate has the advantages of strong high corrosion resistance, so that the lower guard plate 70 can better play a protective role. The glass fiber plus steel plate is riveted to the pallet 10, which can enhance the connection strength between the lower guard plate 70 and the pallet 10, so that the connection between the lower guard plate 70 and the pallet 10 can be more stable. It can also improve the load-bearing capacity of the lower guard plate 70 and the pallet 10.

[0065] The electric device according to the embodiment of the utility model comprises: the battery pack 1 described in the above embodiment.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0067] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack (1), characterized in that: include: Tray (10); Battery module (20); A cooler (30), the cooler (30) is connected to the tray (10), a side of the cooler (30) adjacent to the battery module (20) is coated with a thermal conductive adhesive (40), and the battery module (20) is bonded to the cooler (30) via the thermal conductive adhesive (40).

2. The battery pack (1) according to claim 1, characterized in that: The battery module (20) has a first direction, a second direction and a third direction. The battery module (20) is connected to the cooler (30) along the first direction. The thermal conductive adhesive (40) is applied to the cooler (30) along the second direction and the third direction. The first direction, the second direction and the third direction are arranged perpendicularly in pairs.

3. The battery pack (1) according to claim 2, characterized in that: The thermally conductive adhesive (40) comprises: a first thermally conductive adhesive (41) and a second thermally conductive adhesive (42), wherein the first thermally conductive adhesive (41) is applied on the cooler (30) along a second direction, and the second thermally conductive adhesive (42) is applied on the cooler (30) along a third direction, and the second thermally conductive adhesive (42) is located on both sides of a plurality of the first thermally conductive adhesives (41).

4. The battery pack (1) according to claim 3, characterized in that: In the second direction, the size of the second thermally conductive adhesive (42) is a, and in the third direction, the size of the first thermally conductive adhesive (41) is b, and the relationship between a and b is: a≥b.

5. The battery pack (1) according to claim 4, characterized in that: The value range of a and b is: 6mm≤a≤10mm, 5mm≤b≤7mm.

6. The battery pack (1) according to claim 3, characterized in that: The battery module (20) comprises: a single battery, wherein the single battery is connected to the cooler (30) along a second direction respectively via the first heat conductive adhesive (41) and the second heat conductive adhesive (42).

7. The battery pack (1) according to claim 6, characterized in that: The single cell has a bonding surface, and in the third direction, the size of the first heat-conducting adhesive (41) is smaller than the size of the bonding surface, and the first heat-conducting adhesive (41) is located in the middle of the bonding surface.

8. The battery pack (1) according to claim 3, characterized in that: There are a plurality of first thermally conductive adhesives (41), and the plurality of first thermally conductive adhesives (41) are arranged at intervals along the third direction; there are a plurality of second thermally conductive adhesives (42), and the plurality of second thermally conductive adhesives (42) are arranged at intervals along the second direction.

9. The battery pack (1) according to claim 2, characterized in that: In the first direction, the size of the thermal conductive adhesive (40) is h1, and the value range of h1 is: 0.2mm≤h1≤0.8mm.

10. The battery pack (1) according to claim 2, characterized in that: A crossbeam (11) and a longitudinal beam (12) are provided on one side of the tray (10) facing the battery module (20), and the crossbeam (11) and the longitudinal beam (12) are respectively connected to the cooler (30).

11. The battery pack (1) according to claim 1, characterized in that: Also includes: A cover plate (50), the cover plate (50) being arranged to cover a side of the tray (10) adjacent to the battery module (20).

12. The battery pack (1) according to claim 11, characterized in that: Also includes: Structural adhesive (60), the structural adhesive (60) is applied to a side of the battery module (20) adjacent to the cover plate (50), and the cover plate (50) is bonded to the battery module (20) through the structural adhesive (60).

13. The battery pack (1) according to claim 12, characterized in that: In the first direction, the size of the structural adhesive (60) is h2, and the value range of h2 is: 0.5mm≤h2≤0.9mm.

14. The battery pack (1) according to claim 12, characterized in that: The structural adhesive (60) includes: a first structural adhesive (61) and a second structural adhesive (62), wherein the first structural adhesive (61) is applied on the battery module (20) along a second direction, and the second structural adhesive (62) is applied on the battery module (20) along a third direction, and the second structural adhesive (62) is located on both sides of a plurality of the first structural adhesives (61).

15. The battery pack (1) according to claim 14, characterized in that: In the second direction, the size of the second structural adhesive (62) is c, and in the third direction, the size of the first structural adhesive (61) is d, and the relationship between c and d is: c≥d.

16. The battery pack (1) according to claim 14, characterized in that: There are a plurality of the first structural adhesives (61), and the plurality of the first structural adhesives (61) are arranged at intervals along the third direction; there are a plurality of the second structural adhesives (62), and the plurality of the second structural adhesives (62) are arranged at intervals along the second direction.

17. The battery pack (1) according to claim 11, characterized in that: The cover plate (50) is a metal structural component.

18. The battery pack (1) according to claim 1, characterized in that: Also includes: A lower guard plate (70), wherein the lower guard plate (70) is arranged on a side of the tray (10) away from the battery module (20).

19. The battery pack (1) according to claim 18, characterized in that: The lower guard plate (70) is a glass fiber and steel plate member, and the glass fiber and steel plate member is riveted to the tray (10).

20. An electrical equipment, characterized in that: include: The battery pack (1) according to any one of claims 1 to 19.

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