Battery pack and electric device having same

Abstract

A battery pack and an electric device having same. The battery pack comprises: a housing (10), the housing (10) defining an accommodating cavity (103); a plurality of battery modules (20), the battery modules (20) being arranged in the accommodating cavity (103), and the battery modules (20) comprising a plurality of battery cells (21) arranged in a first direction; and at least one cooling module (30), the cooling module (30) being arranged between two adjacent battery modules (20). Two ends of the cooling module (30) in the first direction are provided with first fitting portions (31), and the first fitting portions (31) fit battery cells (21) at the two ends of the battery modules (20) in the first direction, and are used for applying to the two battery cells (21) forces acting towards each other.

Description

Battery pack and electric device with same

[0001] Cross-reference to Related Applications

[0002] The present application is based on the Chinese patent application No. 2024217399450, filed on July 22, 2024, and claims priority to the Chinese patent application No. 2024217399450, and the entire contents of the Chinese patent application No. 2024217399450 are hereby incorporated by reference into the present application. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a battery pack and an electric device with the same. BACKGROUND

[0004] With the development of new energy vehicles, the demand for battery capacity of vehicles is getting higher and higher, and how to increase the capacity of the battery has become a big pain point.

[0005] SUMMARY

[0006] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a battery pack, which is provided with a first matching part on the cooling module, so that the cooling module can tension a plurality of battery monomers in the first direction while cooling the battery monomers, so that the cooling module plays the role of a tensioning plate. In this way, it is not necessary to separately provide a tensioning plate or the number of tensioning plates in the battery pack can be reduced, which facilitates reducing the number of parts of the battery pack and releasing the space in the battery pack, thereby reserving more space for the battery monomers.

[0007] The present application also provides an electric device with the battery pack.

[0008] According to the battery pack of the first aspect of the present application, the battery pack comprises a shell defining a receiving cavity, a plurality of battery modules arranged in the receiving cavity, the battery modules comprising a plurality of battery monomers arranged in a first direction, and a plurality of battery modules arranged in a second direction perpendicular to the first direction; and at least one cooling module arranged between adjacent two battery modules for cooling the battery monomers, wherein the cooling module is provided with a first matching part at both ends in the first direction, the first matching part is matched with the battery monomers at both ends of the battery module in the first direction, and is used for applying an action force towards each other to the two battery monomers.

[0009] According to the battery pack provided in the embodiments of the present application, the first matching part is arranged on the cooling module, so that the cooling module can be used as a tensioning plate to tension the plurality of battery monomers in the first direction while cooling the battery monomers. In this way, the tensioning plate does not need to be arranged separately or the number of tensioning plates in the battery pack can be reduced, the number of components of the battery pack is reduced, and the space in the battery pack is released to provide more space for the battery monomers.

[0010] In addition, the battery pack provided in the embodiments of the present application can have the following additional technical features.

[0011] According to some embodiments of the present application, the cooling module comprises: a heat exchange plate having a heat exchange flow channel for placing a heat exchange medium, the heat exchange plate being in heat exchange with the battery module; and a uniform temperature plate being in heat exchange with the battery module and being stacked with the heat exchange plate.

[0012] According to some optional embodiments of the present application, the first side wall of the shell is provided with a liquid inlet interface and a liquid outlet interface, the liquid inlet interface is in communication with the inlet of the heat exchange flow channel, and the liquid outlet interface is in communication with the outlet of the heat exchange flow channel.

[0013] According to some optional embodiments of the present application, the first matching part is arranged at both ends of the uniform temperature plate in the first direction, and the first matching part of the uniform temperature plate is matched with the battery monomers of the battery module adjacent thereto; and / or the first matching part is arranged at both ends of the heat exchange plate in the first direction, and the first matching part of the heat exchange plate is matched with the battery monomers of the battery module adjacent thereto.

[0014] According to some optional embodiments of the present application, the battery pack comprises three battery modules, and the cooling module is arranged between each adjacent two battery modules. The battery module located in the middle is in heat exchange with the heat exchange plate at both ends in the second direction, and the battery modules located on both sides are in heat exchange with the corresponding uniform temperature plates.

[0015] According to some embodiments of the present application, at least one heat-conducting pad is arranged between the adjacent battery module and the cooling module, and the heat-conducting pad, the battery module and the cooling module define a gluing space for filling a heat-conducting glue layer.

[0016] According to some embodiments of the present application, the battery pack further comprises a tensioning plate, and the tensioning plate and the cooling module are located on both sides of the battery module in the second direction. The tensioning plate is provided with a second matching part at both ends in the first direction, the second matching part is matched with the battery monomers at both ends of the battery module in the first direction, and is used to apply an action force towards each other to the two battery monomers.

[0017] According to some embodiments of the present application, the battery pack further comprises a detection module configured to collect voltage and temperature data of the battery modules, the detection module comprising: a plurality of first collecting units, each of the first collecting units corresponding to one of the battery modules, each of the first collecting units extending along the first direction, the first collecting unit being located at one end of the battery module in a third direction and being electrically connected to the battery cells of the corresponding battery module; a plurality of second collecting units, each of the second collecting units corresponding to one of the battery modules, each of the second collecting units extending along the first direction, the second collecting unit being located at the other end of the battery module in the third direction and being electrically connected to the battery cells, the second collecting unit being in communication with the first collecting unit, the third direction being perpendicular to the first direction and the second direction.

[0018] According to some optional embodiments of the present application, the second collecting units are connected by wires, and one of the second collecting units is provided with an external interface.

[0019] According to some specific embodiments of the present application, the first collecting unit comprises a plurality of first circuit boards arranged in an array, each of the first circuit boards being in communication with the second collecting unit; and / or, the second collecting unit comprises a plurality of second circuit boards arranged in an array, the plurality of second circuit boards being electrically connected by wires.

[0020] In some embodiments, the first circuit boards are flexible circuit boards or printed circuit boards, and the second circuit boards are printed circuit boards.

[0021] According to some optional embodiments of the present application, the first side wall of the shell has a relief opening for avoiding the external interface.

[0022] According to a second aspect of the present application, a power consuming device is provided, which comprises the battery pack according to the first aspect of the present application.

[0023] According to the power consuming device of the present application, by using the battery pack according to the first aspect of the present application, the first matching part is arranged on the cooling module, so that the cooling module can not only cool the battery cells, but also tension the battery cells along the first direction, so that the cooling module plays the role of a tensioning plate. Thus, it is not necessary to separately arrange a tensioning plate or the number of tensioning plates in the battery pack can be reduced, so that the number of parts of the battery pack is reduced, the space in the battery pack is released, and more space is reserved for the battery cells.

[0024] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and readily understood by describing in detail exemplary embodiments, including certain examples, of the application, as illustrated in the accompanying drawings.

[0026] FIG. 1 is a structural schematic diagram of a battery pack according to an embodiment of the present application;

[0027] FIG. 2 is a structural exploded diagram of a battery pack according to an embodiment of the present application;

[0028] FIG. 3 is a partial structural schematic diagram of a battery pack according to an embodiment of the present application;

[0029] FIG. 4 is a partial structural exploded diagram of a battery pack according to an embodiment of the present application;

[0030] FIG. 5 is a partial structural schematic diagram of a battery pack according to an embodiment of the present application;

[0031] FIG. 6 is a partial structural schematic diagram of a battery pack according to an embodiment of the present application;

[0032] FIG. 7 is a partial structural schematic diagram of a detection module according to an embodiment of the present application;

[0033] FIG. 8 is a structural schematic diagram of a first electrical connecting sheet, a second electrical connecting sheet and a third electrical connecting sheet according to an embodiment of the present application.

[0034] The reference signs: battery pack 1, shell 10, box body 101, lower supporting plate 102, accommodating cavity 103, first side wall 11, liquid inlet interface 121, liquid outlet interface 122, end plate 15, battery module 20, battery monomer 21, cooling module 30, heat exchange plate 301, uniform temperature plate 302, first matching part 31, first butt joint part 321, second butt joint part 322, heat conduction pad 41, pull plate 42, second matching part 421, first pipeline 46, second pipeline 47, partition pad 48, first collecting part 51, first circuit board 511, second collecting part 52, second circuit board 521, external interface 522, first electrical connecting sheet 61, second electrical connecting sheet 62, third electrical connecting sheet 63, positive pole 64, negative pole 65, fuse 66, plastic support 71. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be understood as limiting the present application.

[0036] A battery pack 1 according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0037] As shown in FIGS. 1-4, the battery pack 1 according to the embodiments of the present application comprises a shell 10, a plurality of battery modules 20 and at least one cooling module 30.

[0038] The shell 10 defines a receiving cavity 103, the battery modules 20 are arranged in the receiving cavity 103, the battery modules 20 comprise a plurality of battery cells 21 arranged along a first direction, the plurality of battery modules 20 are arranged along a second direction perpendicular to the first direction, and the cooling module 30 is arranged between two adjacent battery modules 20 for cooling the battery cells 21.

[0039] Specifically, the battery cells 21 generate heat during charging and discharging, but the working efficiency of the battery cells 21 is low at high temperature, and the cooling module 30 is used to cool the battery cells 21 so that the battery cells 21 are at an appropriate temperature, thereby facilitating to improve the charging and discharging efficiency of the battery cells 21.

[0040] The cooling module 30 is provided with a first matching part 31 at both ends in the first direction, the first matching part 31 matches the battery cells 21 at both ends of the battery module 20 in the first direction, and is used to apply an action force towards each other to the two battery cells 21, thereby being able to tension the plurality of battery cells 21 along the first direction, so that the plurality of battery cells 21 form a battery module 20, and the cooling module 30 bears the expansion force of the battery cells 21 along the first direction.

[0041] Compared with installing the plurality of battery cells 21 one by one into the receiving cavity 103, the step of tensioning the plurality of battery cells 21 and then installing the battery module 20 into the receiving cavity 103 is simpler.

[0042] In the prior art, a plurality of tension plates 42 are needed to be separately arranged to tension the plurality of battery cells 21, and the first matching part 31 is arranged on the cooling module 30 in the present application, so that the cooling module 30 can tension the plurality of battery cells 21 along the first direction while cooling the battery cells 21, and the cooling module 30 plays the role of the tension plate 42, so that the tension plate 42 does not need to be separately arranged or the number of the tension plate 42 in the battery pack 1 can be reduced, thereby facilitating to reduce the number of parts in the battery pack 1, facilitating to release the space in the battery pack 1, reserving more space for the battery cells 21, and thereby facilitating to improve the capacity of the battery pack 1.

[0043] Therefore, the battery pack 1 according to the embodiments of the present application can pull the plurality of battery monomers 21 in the first direction while cooling the battery monomers 21 by arranging the first matching part 31 on the cooling module 30, so that the cooling module 30 plays the role of the pull plate 42, and thus the pull plate 42 does not need to be arranged separately or the number of the pull plates 42 in the battery pack 1 can be reduced, the number of parts of the battery pack 1 is facilitated to be reduced, and the space in the battery pack 1 is facilitated to be released, so that a larger space is reserved for the battery monomers 21.

[0044] The battery pack 1 according to the embodiments of the present application is described below with reference to the accompanying drawings.

[0045] In some embodiments of the present application, as shown in FIGS. 1-4, the battery pack 1 includes a shell 10, a plurality of battery modules 20, and at least one cooling module 30.

[0046] In some embodiments of the present application, as shown in FIGS. 4 and 5, the cooling module 30 includes a heat exchange plate 301 and a uniform temperature plate 302. The heat exchange plate 301 has a heat exchange flow channel for placing a heat exchange medium. The heat exchange plate 301 exchanges heat with the battery module 20, and when the heat exchange medium flows in the heat exchange flow channel, the heat exchange medium can drive the heat on the battery module 20, and then cool the battery monomers 21.

[0047] The uniform temperature plate 302 is stacked with the heat exchange plate 301, and the uniform temperature plate 302 exchanges heat with the battery module 20 to uniformly transfer the heat generated by the battery monomers 21 to the heat exchange plate 301 by the uniform temperature plate 302, and then uniformly exchange heat with the battery module 20, so as to facilitate to improve the heat exchange efficiency of the cooling module 30.

[0048] In some optional embodiments of the present application, as shown in FIGS. 1 and 5, the first side wall 11 of the shell 10 is provided with a liquid inlet interface 121 and a liquid outlet interface 122. The liquid inlet interface 121 is in communication with the inlet of the heat exchange flow channel, and the liquid outlet interface 122 is in communication with the outlet of the heat exchange flow channel. The heat exchange medium enters the heat exchange flow channel through the liquid inlet interface 121, and the heat exchange medium in the heat exchange flow channel flows out from the liquid outlet interface 122, so as to realize the flow of the heat exchange medium in the heat exchange flow channel, and then utilize the heat exchange medium to take away the heat on the heat exchange plate 301, so as to cool the battery monomers 21.

[0049] In some embodiments, as shown in FIGS. 4 and 5, the battery pack 1 includes a first cooling module and a second cooling module. The first cooling module and the second cooling module are arranged in a second direction. The first cooling module includes a first heat exchange plate and a first uniform temperature plate. The second cooling module includes a second heat exchange plate and a second uniform temperature plate.

[0050] The heat exchange plate 301 comprises a first abutting portion 321 and a second abutting portion 322, the first abutting portion 321 defines an inlet of a heat exchange flow channel, and the second abutting portion 322 defines an outlet of the heat exchange flow channel, the liquid inlet interface 121 is connected to the first abutting portion 321 of the first heat exchange plate and the first abutting portion 321 of the second heat exchange plate through the first pipeline 46, and the liquid outlet interface 122 is connected to the second abutting portion 322 of the first heat exchange plate and the second abutting portion 322 of the second heat exchange plate through the second pipeline 47, so as to realize the flow of the heat exchange medium in the heat exchange flow channel in the first heat exchange plate and the flow of the heat exchange medium in the heat exchange flow channel in the second heat exchange plate.

[0051] In some optional embodiments of the present application, as shown in FIG. 4, the uniform temperature plate 302 is provided with a first matching portion 31 at both ends in the first direction, the first matching portion 31 of the uniform temperature plate 302 is matched with the battery monomer 21 of the battery module 20 adjacent thereto, so as to tension the plurality of battery monomers 21 in the battery module 20 adjacent thereto in the first direction, and make the plurality of battery monomers 21 form an entirety, and the uniform temperature plate 302 is used to bear the expansion force of the battery monomer 21 in the first direction.

[0052] In some embodiments, as shown in FIG. 2 and FIG. 4, the second direction extends in the up-down direction (here it is understood that the above-mentioned direction is defined only for the convenience of describing the drawings, and will not limit the actual setting position and direction of the battery pack 1), the battery pack 1 comprises a first battery module, a second battery module and a third battery module, and the battery pack 1 further comprises a first cooling module and a second cooling module, the first cooling module is located between the first battery module and the second battery module, and the second cooling module is located between the second battery module and the third battery module.

[0053] The first cooling module comprises a first uniform temperature plate, and the first uniform temperature plate is located below the first battery module, and the second cooling module comprises a second uniform temperature plate, and the second uniform temperature plate is located above the third battery module.

[0054] In some embodiments, the first uniform temperature plate and the second uniform temperature plate are both provided with the first matching portion 31.

[0055] The first matching portion 31 of the first uniform temperature plate is formed as a flange, and the first matching portion 31 of the first uniform temperature plate extends upward to be fitted with the side wall of the battery monomer 21 at both ends of the first battery module in the first direction, so as to exert a tensioning force on the plurality of battery monomers 21.

[0056] The first matching portion 31 of the second uniform temperature plate is formed as a flange, and the first matching portion 31 of the second uniform temperature plate extends downward to be fitted with the side wall of the battery monomer 21 at both ends of the third battery module in the first direction, so as to exert a tensioning force on the plurality of battery monomers 21.

[0057] In some embodiments, only the first heat-dissipating plate is provided with the first matching part 31. In some other embodiments, only the second heat-dissipating plate is provided with the first matching part 31.

[0058] In some embodiments, the first heat-dissipating plate is provided with the first matching part 31 at both ends in the first direction, and the first matching part 31 of the first heat-dissipating plate is matched with the battery cells 21 of the battery module 20 adjacent thereto, so as to tension the battery cells 21 of the battery module 20 adjacent thereto in the first direction, and make the battery cells 21 form an integral whole, and the first heat-dissipating plate bears the expansion force of the battery cells 21 in the first direction.

[0059] In some embodiments, the second direction extends in the up-down direction, and the battery pack 1 comprises a first battery module, a second battery module and a third battery module, and further comprises a first cooling module and a second cooling module, the first cooling module is located between the first battery module and the second battery module, and the second cooling module is located between the second battery module and the third battery module.

[0060] The first cooling module comprises a first heat-dissipating plate located above the second battery module, and the second cooling module comprises a second heat-dissipating plate located below the second battery module.

[0061] In some embodiments, the first heat-dissipating plate and the second heat-dissipating plate are both provided with the first matching part 31.

[0062] Specifically, the first heat-dissipating plate is provided with the first matching part 31 at both ends in the first direction, and the first matching part 31 is formed as a flange, and the first matching part 31 of the first heat-dissipating plate extends downward to be matched with the upper side wall of the battery cells 21 at both ends of the second battery module in the first direction, so as to apply tension to the battery cells 21.

[0063] The second heat-dissipating plate is provided with the first matching part 31 at both ends in the first direction, and the first matching part 31 is formed as a flange, and the first matching part 31 of the second heat-dissipating plate extends upward to be matched with the lower side wall of the battery cells 21 at both ends of the third battery module in the first direction, so as to apply tension to the battery cells 21.

[0064] In some embodiments, only the first heat-dissipating plate is provided with the first matching part 31. In some other embodiments, only the second heat-dissipating plate is provided with the first matching part 31.

[0065] In some optional embodiments of the present application, as shown in FIG. 2 and FIG. 4, the battery pack 1 includes three battery modules 20, and a cooling module 30 is arranged between each adjacent two battery modules 20. The battery module 20 in the middle is in heat exchange with the heat exchange plate 301 at both ends in the second direction, and the battery modules 20 on both sides are in heat exchange with the uniform temperature plate 302. In this way, the cooling efficiency of the two cooling modules 30 on the three battery modules 20 can be balanced, and the situation that the cooling efficiency of one of the three battery modules 20 is too low can be avoided.

[0066] Specifically, the heat exchange plate 301 has a heat exchange channel, so the surface of the heat exchange plate 301 in heat exchange with the battery module 20 is uneven, and the heat exchange efficiency between the heat exchange plate 301 and the battery module 20 is low. The surface of the uniform temperature plate 302 in heat exchange with the battery module 20 is flat, and the heat exchange efficiency between the uniform temperature plate 302 and the battery module 20 is high.

[0067] Therefore, the battery module 20 in the middle layer is cooled by two heat exchange plates 301, and one battery module 20 is cooled by one uniform temperature plate 302, so that the cooling efficiency of the two cooling modules 30 on the three battery modules 20 can be balanced.

[0068] In some embodiments, as shown in FIG. 2, the second direction extends in the up-down direction, and the battery pack 1 includes a first battery module, a second battery module, and a third battery module. The battery pack 1 further includes a first cooling module and a second cooling module. The first cooling module is located between the first battery module and the second battery module, and the second cooling module is located between the second battery module and the third battery module. The first cooling module includes a first heat exchange plate and a first uniform temperature plate, and the second cooling module includes a second heat exchange plate and a second uniform temperature plate.

[0069] From top to bottom, they are the first battery module, the first uniform temperature plate, the first heat exchange plate, the second battery module, the second heat exchange plate, the second uniform temperature plate, and the third cooling module 30.

[0070] The battery cells 21 in the second battery module are cooled by the first heat exchange plate and the second heat exchange plate, the battery cells 21 in the first battery module are cooled by the first uniform temperature plate, and the battery cells 21 in the third cooling module 30 are cooled by the second uniform temperature plate, so that the cooling efficiency of the two cooling modules 30 on the three battery modules 20 can be balanced.

[0071] In some embodiments of the present application, as shown in FIG. 6, at least one heat-conducting pad 41 is arranged between adjacent battery modules 20 and cooling modules 30, and a glue space for filling a heat-conducting glue layer is defined between the heat-conducting pad 41, the battery module 20 and the cooling module 30, the heat-conducting glue layer is used to bond the adjacent battery module 20 and the cooling module 30 together, and the cooling module 30 and the battery module 20 are in heat exchange with the heat-conducting glue layer and the heat-conducting pad 41, so that the cooling module 30 can cool the battery module 20.

[0072] In some embodiments of the present application, as shown in FIG. 6, at least one heat-conducting pad 41 is arranged between adjacent battery modules 20 and cooling modules 30, and a glue space for filling a heat-conducting glue layer is defined between the heat-conducting pad 41, the battery module 20 and the cooling module 30, the heat-conducting glue layer is used to bond the adjacent battery module 20 and the cooling module 30 together, and the cooling module 30 and the battery module 20 are in heat exchange with the heat-conducting glue layer and the heat-conducting pad 41, so that the cooling module 30 can cool the battery module 20.

[0073] In some embodiments, as shown in FIG. 5, the heat exchange plate 301 includes a first abutting portion 321 and a second abutting portion 322, the first abutting portion 321 defines an inlet of the heat exchange flow channel, and the second abutting portion 322 defines an outlet of the heat exchange flow channel. Because the first abutting portion 321 and the second abutting portion 322 are arranged, the heat exchange medium will lose part of the energy when it is in the first abutting portion 321 and the second abutting portion 322.

[0074] In some embodiments of the present application, as shown in FIG. 6, at least one heat-conducting pad 41 is arranged between adjacent battery modules 20 and cooling modules 30, and a glue space for filling a heat-conducting glue layer is defined between the heat-conducting pad 41, the battery module 20 and the cooling module 30, the heat-conducting glue layer is used to bond the adjacent battery module 20 and the cooling module 30 together, and the cooling module 30 and the battery module 20 are in heat exchange with the heat-conducting glue layer and the heat-conducting pad 41, so that the cooling module 30 can cool the battery module 20.

[0075] In addition, the first abutting portion 321 and the second abutting portion 322 can be used to support the battery monomers 21.

[0076] In some embodiments, as shown in FIG. 5, the heat exchange plate 301 includes a first abutting portion 321 and a second abutting portion 322, the first abutting portion 321 defines an inlet of the heat exchange flow channel, and the second abutting portion 322 defines an outlet of the heat exchange flow channel. Because the first abutting portion 321 and the second abutting portion 322 are arranged, the heat exchange medium will lose part of the energy when it is in the first abutting portion 321 and the second abutting portion 322.

[0077] In some embodiments of the present application, as shown in FIG. 4 and FIG. 5, the battery pack 1 further includes a pull plate 42, in the second direction, the pull plate 42 and the cooling module 30 are located on both sides of the battery module 20, and the pull plate 42 is provided with a second matching portion 421 at both ends in the first direction, the second matching portion 421 is matched with the battery monomers 21 at both ends of the battery module 20 in the first direction, and is used to apply an action force to the two battery monomers 21 towards each other, so as to be able to tension the plurality of battery monomers 21 in the first direction, so as to form a battery module 20, and to use the pull plate 42 to bear the expansion force of the battery monomers 21 in the first direction.

[0078] In some embodiments, as shown in FIG. 2, the second direction extends along the up-down direction, the battery pack 1 includes a first battery module, a second battery module and a third battery module, and the battery pack 1 further includes a first cooling module and a second cooling module, the first cooling module is located between the first battery module and the second battery module, and the second cooling module is located between the second battery module and the third battery module.

[0079] The first cooling module is provided with a first matching part 31, the first matching part 31 on the first cooling module extends upward, and the first cooling module tightens the plurality of battery monomers 21 in the first battery module from below the first battery module. The second cooling module is provided with a first matching part 31, the first matching part 31 on the second cooling module extends upward, and the second cooling module tightens the plurality of battery monomers 21 in the second battery module from below the second battery module.

[0080] The pull plate 42 is located above the first battery module, and the pull plate 42 is provided with a second matching part 421 at both ends in the first direction, the second matching part 421 extends downward, and the pull plate 42 tightens the plurality of battery monomers 21 in the first battery module from above the first battery module.

[0081] In some optional embodiments of the present application, as shown in FIG. 4 and FIG. 5, the battery pack 1 further includes an end plate 15, each battery module 20 is provided with an end plate 15 at both ends in the first direction, the plurality of battery monomers 21 in each battery module 20 are located between the two end plates 15, the first matching part 31 is fixed with the corresponding end plate 15 to exert a force on the two end plates 15 towards each other, and then the end plate 15 is used to exert a tightening force on the plurality of battery monomers 21, so as to use the cooling module 30 to bear the expansion force of the battery monomers 21 along the first direction.

[0082] The second matching part 421 is fixed with the corresponding end plate 15 to exert a force on the two end plates 15 towards each other, and then the end plate 15 is used to exert a tightening force on the plurality of battery monomers 21, so as to use the pull plate 42 to bear the expansion force of the battery monomers 21 along the first direction.

[0083] In some embodiments, the first fastener passes through the first matching part 31 and the end plate 15 corresponding thereto along the first direction, so as to detachably fix the first matching part 31 and the end plate 15 together. The second fastener passes through the second matching part 421 and the end plate 15 corresponding thereto along the first direction, so as to detachably fix the second matching part 421 and the end plate 15 together.

[0084] In other embodiments, the first matching part 31 and the end plate 15 corresponding thereto are fixed by welding, and the second matching part 421 and the end plate 15 corresponding thereto are fixed by welding.

[0085] In some embodiments of the present application, as shown in FIG. 2, the shell 10 includes a box body 101 and a lower supporting plate 102, the box body 101 and the lower supporting plate 102 define a containing cavity 103, the box body 101 and the lower supporting plate 102 are detachably connected together, the battery pack 1 includes a first battery module, a second battery module and a third battery module, and the battery pack 1 further includes a first cooling module and a second cooling module, the first cooling module is located between the first battery module and the second battery module, and the second cooling module is located between the second battery module and the third battery module.

[0086] The first battery module and the first cooling module are fixedly connected together through a heat-conducting adhesive layer, the second battery module and the second cooling module are fixedly connected together through a heat-conducting adhesive layer, and the third battery module is fixedly connected to the lower supporting plate 102 through a connecting adhesive layer.

[0087] The first battery module, the second battery module and the third battery module can be obtained by removing the heat-conducting adhesive layer and the connecting adhesive layer, and the first cooling module and the second cooling module can be obtained by removing the heat-conducting adhesive layer and the connecting adhesive layer, so that the first battery module, the second battery module and the third battery module can be replaced individually, and the first cooling module and the second cooling module can be replaced individually.

[0088] In some embodiments, as shown in FIG. 6, a separation pad 48 is arranged between the third battery module and the lower supporting plate 102, and a glue coating space for filling the connecting adhesive layer is defined between the separation pad 48, the third battery module and the lower supporting plate 102, so that the connecting adhesive layer can be uniformly distributed between the third battery module and the lower supporting plate 102, and the situation that the connecting adhesive layer is thicker in some areas and thinner in some areas can be avoided.

[0089] In some embodiments of the present application, as shown in FIGS. 2 and 7, the battery pack 1 further includes a detection module, the detection module is used at least for collecting voltage and temperature data of the battery modules 20 to monitor the conditions of the battery modules 20, so that abnormalities of the battery modules 20 can be found in time, and the safety of the battery pack 1 can be improved.

[0090] The detection module includes a plurality of first collection parts 51 and a plurality of second collection parts 52.

[0091] The plurality of first collection parts 51 are arranged one-to-one with the plurality of battery modules 20, each first collection part 51 extends along a first direction to cover a plurality of battery cells 21 in the battery module 20, and the first collection part 51 is located at one end of the battery module 20 in a third direction and is electrically connected with the plurality of battery cells 21 of the corresponding battery module 20.

[0092] The plurality of second collecting members 52 are arranged one-to-one with the plurality of battery modules 20, the second collecting member 52 extends along the first direction to cover the plurality of battery cells 21 in the battery module 20, the second collecting member 52 is located at the other end of the battery module 20 in the third direction and is electrically connected with the plurality of battery cells 21, the second collecting member 52 is in communication with the first collecting member 51, and the third direction is arranged perpendicularly to the first direction and the second direction.

[0093] Briefly, one end of each battery module 20 in the third direction is provided with the first collecting member 51, and the other end is provided with the second collecting member 52, the second collecting member 52 can obtain the information collected by the first collecting member 51, by analyzing the total information collected by the second collecting member 52, the voltage and temperature data of the corresponding battery module 20 can be obtained, so that the plurality of battery modules 20 can be monitored respectively, so that when an abnormal situation occurs, it can be quickly determined which one of the plurality of battery modules 20 has a problem, facilitating quick repair and improving safety in use.

[0094] Among them, the temperature and voltage of the battery module 20 can be monitored while assembling the battery pack 1, so that when the abnormal battery module 20 is assembled into the accommodating cavity 103, it can be found in time, avoiding the need to disassemble after assembly.

[0095] In some embodiments, the first collecting member 51 is electrically connected with the shell of the battery cell 21, and the second collecting member 52 is electrically connected with the shell of the battery cell 21 to realize communication between the first collecting member 51 and the second collecting member 52.

[0096] In some optional embodiments of the present application, as shown in FIG. 7, the plurality of second collecting members 52 are connected by wires, one of the second collecting members 52 is provided with an external interface 522, the external interface 522 is used to output the total information collected by the plurality of second collecting members 52 to the outside, so as to monitor the voltage and temperature of the battery module 20 through the information output by the external interface 522.

[0097] In some embodiments, the plurality of second collecting members 52 are arranged on the same side of the corresponding battery module 20, so that the plurality of second collecting members 52 can be connected by wires, reducing the complexity of wire connection.

[0098] In some specific embodiments of the present application, as shown in FIG. 7, the first collecting member 51 includes a plurality of first circuit boards 511 arranged in an array, each first circuit board 511 is in communication connection with the second collecting member 52, so as to shorten the length of the first circuit board 511 along the first direction, compared with a longer first circuit board 511, it is easier to set a plurality of shorter first circuit boards 511, and the cost is lower.

[0099] In some embodiments, the first circuit board 511 is a flexible circuit board or a printed circuit board.

[0100] In some embodiments of the present application, the second collecting member 52 is a plurality of second circuit boards 521 arranged in an array, and the plurality of second circuit boards 521 are electrically connected by wires, so as to shorten the length of the second circuit boards 521 along the first direction. Compared with a longer second circuit board 521, it is easier to set a plurality of shorter second circuit boards 521, and the cost is lower.

[0101] In some embodiments, the second circuit board 521 is a printed circuit board.

[0102] In some embodiments, the second circuit board 521 is a printed circuit board.

[0103] In some embodiments of the present application, the first side wall 11 of the shell 10 has a clearance opening for avoiding the external interface 522, so as to facilitate the connection of external parts with the external interface 522, so that the total information collected by the second collecting member 52 can be obtained without disassembling the battery pack 1.

[0104] In some embodiments of the present application, as shown in FIG. 8, the battery pack 1 further comprises a plurality of first electrical connection pieces 61 for connecting the positive and negative poles of adjacent two battery monomers 21 in the battery module 20, so as to connect the plurality of battery monomers 21 in the battery module 20 in series.

[0105] The battery pack 1 further comprises a plurality of second electrical connection pieces 62 for connecting the positive and negative poles of adjacent two battery modules 20, so as to connect the plurality of battery modules 20 in series to form a whole battery, and the battery formed by the plurality of battery modules 20 has a positive pole and a negative pole.

[0106] The battery pack 1 further comprises two third electrical connection pieces 63, one end of one of the third electrical connection pieces 63 is connected to the positive pole of the battery, and the other end is connected to the positive pole post 64 of the battery pack 1, and one end of the other third electrical connection piece 63 is connected to the positive pole of the battery, and the other end is connected to the negative pole post 65 of the battery pack 1.

[0107] In some embodiments, the positive pole post 64 and the negative pole post 65 are arranged on the first side wall 11 of the shell 10, so as to realize the charging and discharging of the battery pack 1.

[0108] In summary, the positive pole 64 and the negative pole 65 are arranged on the first side wall 11 of the shell 10, the external interface 522 is arranged on the first side wall 11 of the shell 10, the liquid inlet interface 121 and the liquid outlet interface 122 are arranged on the first side wall 11 of the shell 10, by integrating the parts in the battery pack 1 that need to be matched with external parts on the first side wall 11 of the shell 10, the space utilization is improved, and the use of the battery pack 1 is facilitated.

[0109] In some embodiments, a fuse 66 is arranged on the third electric connecting sheet 63 connecting the positive pole, and the fuse 66 is burned out to disconnect the circuit when the current in the battery is abnormal.

[0110] In some embodiments of the present application, as shown in FIG. 2, the battery pack 1 further comprises a plurality of plastic supports 71, the plastic supports 71 are arranged in the accommodating cavities 103, the plastic supports 71 define placing cavities, and the battery modules 20 are arranged in the corresponding placing cavities to insulate and protect the battery modules 20 by the plastic supports 71.

[0111] In some embodiments of the present application, the shell 10 is made of a phase change material or polypropylene material to meet the requirements of high strength and high flame retardance of the battery pack 1.

[0112] The power consuming equipment according to the embodiments of the present application is described below. The power consuming equipment according to the embodiments of the present application comprises the battery pack 1 according to the above-mentioned embodiments of the present application.

[0113] The power consuming equipment according to the embodiments of the present application, by using the battery pack 1 according to the above-mentioned embodiments of the present application, arranging the first matching part 31 on the cooling module 30, enabling the cooling module 30 to pull the plurality of battery monomers 21 in the first direction while cooling the battery monomers 21, so that the cooling module 30 plays the role of the pulling plate 42, thus without separately arranging the pulling plate 42 or reducing the number of the pulling plates 42 in the battery pack 1, facilitating the reduction of the number of parts of the battery pack 1, facilitating the release of the space in the battery pack 1, and reserving more space for the battery monomers 21.

[0114] Other configurations and operations of the power consuming equipment according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0115] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application. In addition, the features defined as "first", "second" can be explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specified. In the description of the application, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them.

[0116] In the description of the application, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.

[0117] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0118] In the description of the application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", 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 application. In the description of the application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0119] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A battery pack, wherein, The application relates to a battery module cooling device. The application comprises: a housing (10) defining a containing cavity (103); a plurality of battery modules (20) arranged in the containing cavity (103), each battery module (20) comprising a plurality of battery cells (21) arranged in a first direction, and a plurality of battery modules (20) arranged in a second direction perpendicular to the first direction; at least one cooling module (30) arranged between two adjacent battery modules (20) for cooling the battery cells (21), 2. The battery pack of claim 1, wherein, wherein the cooling module (30) is provided with a first matching part (31) at both ends in the first direction, and the first matching part (31) is matched with the battery cells (21) at both ends of the battery module (20) in the first direction, so as to apply an action force to the two battery cells (21) towards each other. The cooling module (30) comprises: a heat exchange plate (301) provided with a heat exchange flow channel for placing a heat exchange medium, and the heat exchange plate (301) is in heat exchange with the battery module (20); 3. The battery pack of claim 2, wherein, a uniform temperature plate (302) in heat exchange with the battery module (20) and stacked with the heat exchange plate (301).

4. The battery pack of claim 2 or 3, wherein, The first side wall (11) of the housing (10) is provided with a liquid inlet interface (121) and a liquid outlet interface (122), the liquid inlet interface (121) is in communication with the inlet of the heat exchange flow channel, and the liquid outlet interface (122) is in communication with the outlet of the heat exchange flow channel. The uniform temperature plate (302) is provided with the first matching part (31) at both ends in the first direction, and the first matching part (31) of the uniform temperature plate (302) is matched with the battery cells (21) of the battery module (20) adjacent to the uniform temperature plate (302); 5. The battery pack of any one of claims 2-4, wherein, and / or, the heat exchange plate (301) is provided with the first matching part (31) at both ends in the first direction, and the first matching part (31) of the heat exchange plate (301) is matched with the battery cells (21) of the battery module (20) adjacent to the heat exchange plate (301).

6. The battery pack of any one of claims 1-5, wherein, The application comprises three battery modules (20), and the cooling module (30) is arranged between each two adjacent battery modules (20), the middle battery module (20) is in heat exchange with the heat exchange plate (301) at both ends in the second direction, and the battery modules (20) on both sides are in heat exchange with the uniform temperature plates (302). At least one heat conduction pad (41) is arranged between the adjacent battery module (20) and the cooling module (30), and a coating space for filling a heat conduction glue layer is defined between the heat conduction pad (41), the battery module (20) and the cooling module (30).

7. The battery pack of any one of claims 1-6, wherein, Further comprising a pull plate (42), the pull plate (42) and the cooling module (30) are located on both sides of the battery module (20) in the second direction, the pull plate (42) is provided with a second matching part (421) at both ends in the first direction, the second matching part (421) is matched with the battery monomer (21) at both ends of the battery module (20) in the first direction, and the two battery monomers (21) are matched with the battery monomer (21) at both ends of the battery module (20) in the first direction.

8. The battery pack of any one of claims 1-7, wherein, Further comprising a detection module, the detection module is used for at least collecting voltage and temperature data of the battery module (20), and the detection module comprises: A plurality of first collection parts (51) are arranged one by one with a plurality of battery modules (20), each first collection part (51) extends in the first direction, the first collection part (51) is located at one end of the battery module (20) in the third direction and is electrically connected with a plurality of battery monomers (21) of the corresponding battery module (20); A plurality of second collection parts (52) are arranged one by one with a plurality of battery modules (20), the second collection part (52) extends in the first direction, the second collection part (52) is located at the other end of the battery module (20) in the third direction and is electrically connected with a plurality of battery monomers (21), the second collection part (52) communicates with the first collection part (51), and the third direction is arranged perpendicularly to the first direction and the second direction.

9. The battery pack of claim 8, wherein, A plurality of second collection parts (52) are connected by wires, and one of the second collection parts (52) is provided with an external interface (522).

10. The battery pack of claim 9, wherein, The first collection part (51) comprises a plurality of first circuit boards (511) arranged in an array, each first circuit board (511) is in communication connection with the second collection part (52); and / or the second collection part (52) is a plurality of second circuit boards (521) arranged in an array, and the plurality of second circuit boards (521) are electrically connected by wires.

11. The battery pack of claim 10, wherein, The first circuit board (511) is a flexible circuit board or a printed circuit board, and the second circuit board (521) is a printed circuit board.

12. The battery pack of any one of claims 9-11, wherein, The first side wall (11) of the shell (10) has a avoiding opening for avoiding the external interface (522).

13. An electrical device, comprising: The battery pack comprises the battery pack according to any one of claims 1-12. The battery pack comprises the battery pack according to any one of claims 1-12.

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