Battery pack and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and an electric device, the battery pack comprises a box body and a liquid cooling mechanism; the liquid cooling mechanism is arranged in the box body, the liquid cooling mechanism comprises current collecting pieces, a first isolation piece, a current converging piece and a heat dissipation piece, the two ends of the heat dissipation piece are communicated with the current collecting pieces and the current converging piece respectively, the first isolation piece is provided with a first end and a second end, the current collecting pieces comprise a plurality of current collecting pieces, and the first isolation piece is provided with a first end and a second end; every two adjacent current collecting pieces are connected through a first isolation piece, and first connecting grooves connected with the current collecting pieces in an inserted mode are formed in the first ends. According to the battery pack provided by the utility model, the welding yield between the first isolation piece and the current collecting piece can be improved through the first connecting groove, and a gap is prevented from being generated between the first isolation piece and the current collecting piece, so that cooling liquid can be ensured to flow to the heat dissipation piece according to a preset route, good heat exchange between the heat dissipation piece and the battery can be ensured, and the service life of the battery pack is prolonged. And the cooling effect of the heat dissipation piece on the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack and an electrical device. Background Art

[0002] At present, the structure of the liquid cooling system is generally formed by welding the heat sink and the current collector to be fixed together. The interior of the current collector is welded with a spacer to play a role of directional diversion and form a circuitous cooling circuit with the heat sink. However, this connection method of directly welding the spacer to the interior of the current collector results in a small welding area between the spacer and the current collector, which can easily lead to poor welding between the spacer and the current collector and then produce a gap, making it impossible for the spacer to play an effective blocking role in the current collector. The fluid itself has the characteristic of flowing from the high-pressure area to the low-pressure area. At this time, the fluid (or part of the fluid) will flow directly from the liquid inlet to the liquid outlet through the spacer gap (the pressure in this area is relatively low), and will no longer flow to the heat sink (the pressure in this area is relatively high) according to the predetermined route, thereby causing the heat exchange effect of the heat sink to decrease or even be lost. Utility Model Content

[0003] Aiming to solve at least one of the technical problems existing in the prior art, the utility model provides a battery pack and an electrical device having the battery pack, wherein the battery pack ensures good heat exchange between the heat sink and the battery, thereby improving the cooling effect of the heat sink on the battery.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a battery pack having a first direction and a second direction intersecting each other, the battery pack comprising a box body and a liquid cooling mechanism; the liquid cooling mechanism is arranged in the box body, the liquid cooling mechanism comprises a first isolating member, a current collector, a plurality of current collecting members and a plurality of heat dissipating members, the plurality of current collecting members are distributed along the first direction, the two ends of the heat dissipating member in the second direction are respectively connected to the current collecting member and the current collector, the first isolating member has a first end and a second end opposite to each other in the first direction; along the first direction, two adjacent current collecting members are connected by the first isolating member, the first end is provided with a first connecting groove, one end of the current collecting member is accommodated in the first connecting groove and welded to the groove wall of the first connecting groove.

[0005] In some embodiments, a second connecting groove is formed at the second end, the other end of the current collecting member is accommodated in the second connecting groove and welded to the groove wall of the second connecting groove, and an isolation wall is provided between the first connecting groove and the second connecting groove.

[0006] In some embodiments, the current collecting member is in a tubular structure, the first isolating member is in a cylindrical structure, and a positioning plane is provided on an outer side wall of the first isolating member.

[0007] In some embodiments, the liquid cooling mechanism further comprises a second isolation member;

[0008] There are multiple busbars, and the multiple busbars are distributed along the first direction. Two adjacent busbars are connected via the second isolation member.

[0009] In some embodiments, the liquid cooling mechanism further includes a cooling liquid conveying member and a jumper member, the cooling liquid conveying member is connected to the collecting member, the jumper member includes a first cross-tube, and the two ends of the first cross-tube in the first direction are respectively connected to the two collecting members.

[0010] In some embodiments, the plurality of current collecting members include a first current collecting member, a second current collecting member, and a third current collecting member distributed along the first direction; the plurality of current conduits include a first current conduit, a second current conduit, and a third current conduit distributed along the first direction; the coolant conveying member includes a flange, a first liquid inlet pipe, and a liquid outlet pipe, the interior of the flange is provided with a liquid inlet channel and a liquid outlet channel, the first liquid inlet pipe is respectively connected to the liquid inlet channel and the second current collecting member, and the liquid outlet pipe is respectively connected to the third current collecting member and the liquid outlet channel; the plurality of heat sinks include a first heat sink, a second heat sink, a third heat sink, and a fourth heat sink, the first heat sink is respectively connected to the first current collecting member and the first conduit at both ends in the second direction, the second heat sink is respectively connected to the first current collecting member and the second conduit at both ends in the second direction, the third heat sink is respectively connected to the second current collecting member and the second conduit at both ends in the second direction, and the fourth heat sink is respectively connected to the third current collecting member and the third conduit at both ends in the second direction; the first cross-tube is respectively connected to the first conduit and the third conduit at both ends in the first direction.

[0011] In some embodiments, the battery pack further has a third direction, and the first direction, the second direction and the third direction intersect each other; the liquid cooling mechanism further includes a temperature equalizing element, and the temperature equalizing element is connected to one side of the heat sink in the third direction.

[0012] In some embodiments, a thermally conductive adhesive layer is further included, and the thermally conductive adhesive layer is connected to a side of the temperature equalizing element that is away from the heat dissipating element in the third direction.

[0013] In some embodiments, an elastic support member is further included, wherein the elastic support member is connected to a side of the heat dissipation member facing away from the temperature uniformity member.

[0014] The utility model also provides an electrical device, which comprises the battery pack described in any one of the above items.

[0015] Compared with the prior art, a battery pack provided by an embodiment of the utility model has the beneficial effect that: by respectively connecting two adjacent current collecting parts to the first end and the second end of the first insulating part, and by opening a first connecting groove welded to one of the current collecting parts at the first end, and one end of the current collecting part is accommodated in the first connecting groove, the welding area between the first insulating part and the current collecting part can be increased, the welding is convenient and reliable, which is beneficial to improving the welding yield between the first insulating part and the current collecting part, and avoiding the generation of a gap between the first insulating part and the current collecting part, so that the first insulating part can play an effective blocking role between the two adjacent current collecting parts, thereby ensuring that the coolant can flow to the heat sink along a predetermined route, ensuring that the heat sink can exchange heat well with the battery, and improving the cooling effect of the heat sink on the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a battery pack provided by an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a battery pack provided by an embodiment of the utility model with the box body omitted;

[0018] Figure 3 This is a schematic diagram of the structure of the embodiment of the utility model after omitting the box body and the thermal conductive adhesive layer;

[0019] Figure 4 yes Figure 2 Exploded diagram of

[0020] Figure 5 It is a structural schematic diagram of the liquid cooling mechanism provided by an embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of the cooling liquid flow direction of the liquid cooling mechanism provided in the embodiment of the utility model;

[0022] Figure 7 is a cross-sectional view of a liquid cooling mechanism provided by an embodiment of the utility model;

[0023] Figure 8 is a structural diagram of a first isolating member provided in an embodiment of the utility model;

[0024] Fig. 9 is a cross-sectional view of a first isolating member provided in an embodiment of the utility model;

[0025] Fig.10 It is a structural schematic diagram of a flange provided in an embodiment of the utility model.

[0026] In the figure, 1. box body;

[0027] 2. Liquid cooling mechanism; 21. Current collecting member; 22. First isolating member; 23. Current collecting member; 24. Heat dissipating member; 25. Second isolating member; 26. Cooling liquid conveying member; 27. Jumper member; 28. Temperature equalizing member; 29. ​​Sealing cover;

[0028] 211, a first current collecting component; 212, a second current collecting component; 213, a third current collecting component; 214, a fourth current collecting component; 215, a fifth current collecting component;

[0029] 221, first end; 222, second end; 223, first connecting groove; 224, second connecting groove; 225, partition wall; 226, positioning plane;

[0030] 231, first busbar; 232, second busbar; 233, third busbar; 234, fourth busbar; 235, fifth busbar; 236, sixth busbar;

[0031] 241, a first heat sink; 242, a second heat sink; 243, a third heat sink; 244, a fourth heat sink; 245, a fifth heat sink; 246, a sixth heat sink; 247, a seventh heat sink; 248, an eighth heat sink;

[0032] 261, flange; 262, first liquid inlet pipe; 263, second liquid inlet pipe; 264, liquid outlet pipe; 2611, liquid inlet channel; 2612, liquid outlet channel;

[0033] 271, first span pipe; 272, second span pipe;

[0034] 281. Temperature balancing board;

[0035] 3. Thermal conductive adhesive layer;

[0036] 4. Glue stopper; 40. Glue storage space; 41. Glue stopper strip;

[0037] 5. elastic support member; 51. elastic support layer;

[0038] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0039] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] 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" 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 device or element referred to 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.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0045] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0046] like Figure 1-10 As shown, a preferred battery pack of the embodiment of the utility model has a first direction X and a second direction Y intersecting each other, and the battery pack includes a box body 1 and a liquid cooling mechanism 2. The liquid cooling mechanism 2 is arranged in the box body 1, and the liquid cooling mechanism 2 includes a plurality of current collectors 21, a first isolating member 22, a current collector 23 and a plurality of heat sinks 24. The plurality of current collectors 21 are distributed along the first direction X, and the heat sinks 24 are connected to the current collectors 21 and the current collectors 23 at both ends in the second direction Y, respectively. The first isolating member 22 has a first end 221 and a second end 222 opposite to each other in the first direction X. Along the first direction X, two adjacent current collectors 21 are connected by the first isolating member 22, and a first connecting groove 223 is provided at the first end 221. One end of the current collector 21 close to the first end 221 is accommodated in the first connecting groove 223 and welded to the groove wall of the first connecting groove 223.

[0047] Based on this technical solution, by respectively connecting two adjacent current collecting parts 21 to the first end 221 and the second end 222 of the first insulating part 22, and by opening a first connecting groove 223 welded to one of the current collecting parts 21 at the first end 221, one end of the current collecting part 21 close to the first end 221 is accommodated in the first connecting groove 223. In this way, the welding area between the first insulating part 22 and the current collecting part 21 can be increased, and the welding is convenient and reliable, which is beneficial to improving the welding yield between the first insulating part 22 and the current collecting part 21, avoiding the generation of a gap between the first insulating part 22 and the current collecting part 21, so that the first insulating part 22 can play an effective blocking role between the two adjacent current collecting parts 21, thereby ensuring that the coolant can flow to the heat sink 24 along a predetermined route, ensuring that the heat sink 24 can exchange heat well with the battery, and improving the cooling effect of the heat sink 24 on the battery.

[0048] The battery pack also has a third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other.

[0049] In this embodiment, the first direction X, the second direction Y and the third direction Z are perpendicular to each other, and the first direction X, the second direction Y and the third direction Z are respectively the length direction, the width direction and the height direction of the battery pack.

[0050] It is understandable that the battery pack further includes a battery (not shown), and the battery is connected to one side of the heat sink 24 in the third direction Z.

[0051] In this embodiment, the current collecting member 21 is in a circular tubular structure. The heat sink 24 in a circular tubular structure has the advantages of excellent force bearing performance and low fluid flow resistance.

[0052] See also Figure 8-Figure 9 The second end 222 is provided with a second connection groove 224, and one end of the current collector 21 close to the second end 222 is accommodated in the second connection groove 224 and welded to the groove wall of the second connection groove 224, and a partition wall 225 is provided between the first connection groove 223 and the second connection groove 224. By respectively providing the first connection groove 223 and the second connection groove 224 welded to two adjacent current collectors 21 at the first end 221 and the second end 222, the welding area between the first isolation member 22 and the two current collectors 21 can be increased, the welding is convenient and reliable, and it is conducive to improving the welding yield between the first isolation member 22 and the two current collectors 21. At the same time, the partition wall 225 can play an effective blocking role between the two current collectors 21, so as to ensure that the coolant can flow to the heat sink 24 according to the predetermined route, ensure that the heat sink 24 can perform good heat exchange with the battery, and improve the cooling effect of the heat sink 24 on the battery.

[0053] In this embodiment, the first isolating member 22 is in a cylindrical structure, and a positioning plane 226 is provided on the outer side wall of the first isolating member 22. The cylindrical structure enables the first isolating member 22 to be compatible with the tubular structure of the current collecting member 21, thereby making the connection between the first isolating member 22 and the current collecting member 21 more compact and reasonable, thereby helping to reduce the space occupied by the first isolating member 22 and the current collecting member 21 in the internal space of the box body 1; the positioning plane 226 facilitates the positioning and clamping of the first isolating member 22 by the fixture, thereby facilitating the assembly between the first isolating member 22 and the current collecting member 21.

[0054] In this embodiment, two positioning planes 226 are disposed on the outer side wall of the first isolation member 22 , and the two positioning planes 226 are parallel to each other.

[0055] Optionally, the number of the busbars 23 is one or more.

[0056] See also Figure 2-Figure 7 In the present embodiment, there are multiple collectors 23, and the liquid cooling mechanism 2 further includes a second isolating member 25. The multiple collectors 23 are distributed along the first direction X, and along the first direction X, two adjacent collectors 23 are connected by the second isolating member 25. By using multiple collectors 23 and connecting two adjacent collectors 23 by the second isolating member 25, multiple current collectors 21, multiple heat sinks 24, and multiple collectors 23 can be planned to form multiple cooling liquid flow paths as needed to adapt to different application scenarios and requirements.

[0057] The structure of the second isolating member 25 is similar to that of the first isolating member 22 , and the connection method between the second isolating member 25 and the current collecting member 23 is similar to the connection method between the first isolating member 22 and the current collecting member 21 , which will not be described in detail herein.

[0058] In this embodiment, the current collector 23 is in a circular tube structure.

[0059] In this embodiment, the heat sink 24 is a harmonica tube, which has the advantages of low cost, light weight, relatively simple structure, and high production efficiency.

[0060] See also Figure 2-Figure 7 The liquid cooling mechanism 2 further includes a cooling liquid conveying member 26 and a crossover member 27. The cooling liquid conveying member 26 is connected to the current collecting member 21. The crossover member 27 includes a first cross-tube 271. The two ends of the first cross-tube 271 in the first direction X are respectively connected to the two collecting members 23. The cooling liquid conveying member 26 can be used to input the cooling liquid into the collecting member 21 and discharge the cooling liquid from the collecting member 21; the crossover member 27 can be used to connect multiple collecting members 23 as needed to form different cooling liquid flow paths. This flexibility enables the liquid cooling mechanism 2 to adapt to different working conditions and requirements, and improves the adaptability and scalability of the liquid cooling mechanism 2.

[0061] See also Figure 5-Figure 7 In this embodiment, the number of the current collecting pieces 21 is five. Specifically, the five current collecting pieces 21 include a first current collecting piece 211, a second current collecting piece 212, a third current collecting piece 213, a fourth current collecting piece 214 and a fifth current collecting piece 215 distributed along the first direction X.

[0062] In some other embodiments, the number of the current collecting members 21 may be any number such as two, three, four, six, etc., which is not limited here.

[0063] In this embodiment, there are six busbars 23. Specifically, the six busbars 23 include a first busbar 231, a second busbar 232, a third busbar 233, a fourth busbar 234, a fifth busbar 235 and a sixth busbar 236 distributed along the first direction X.

[0064] In some other embodiments, the number of the busbars 23 may be any number such as two, three, four, or five, which is not limited here.

[0065] In this embodiment, the coolant conveying member 26 includes a flange 261, a first liquid inlet pipe 262, a second liquid inlet pipe 263 and a liquid outlet pipe 264. The interior of the flange 261 is provided with a liquid inlet channel 2611 and a liquid outlet channel 2612. The first liquid inlet pipe 262 is respectively connected to the liquid inlet channel 2611 and the second current collecting member 212. The two ends of the second liquid inlet pipe 263 are respectively connected to the inlet channel and the fourth current collecting member 214. The liquid outlet pipe 264 is respectively connected to the third current collecting member 213 and the liquid outlet channel 2612.

[0066] In this embodiment, there are eight heat sinks 24. Specifically, the eight heat sinks 24 include a first heat sink 241, a second heat sink 242, a third heat sink 243, a fourth heat sink 244, a fifth heat sink 245, a sixth heat sink 246, a seventh heat sink 247 and an eighth heat sink 248 distributed along the first direction X.

[0067] In some other embodiments, the number of heat sinks may be any number such as two, three, four, five, six, seven, etc., which is not limited here.

[0068] In this embodiment, the jumper 27 further includes a second jumper tube 272 , that is, the jumper 27 includes two jumpers tubes.

[0069] In some other embodiments, the jumper may also include any number of jumper tubes, such as one, three, four, or five, which is not limited here.

[0070] See also Figure 6 and Figure 7In this embodiment, the first heat sink 241 is connected to the first current collector 211 and the first current collector 231 at two ends in the second direction Y, the second heat sink 242 is connected to the first current collector 211 and the second current collector 232 at two ends in the second direction Y, the third heat sink 243 is connected to the second current collector 212 and the second current collector 232 at two ends in the second direction Y, and the fourth heat sink 244 is connected to the third current collector 213 and the third current collector 233 at two ends in the second direction Y; the jumper 27 includes a first cross-tube 271, and the first cross-tube 271 is connected to the first collector 231 and the third collector 233 at two ends in the first direction X. In this way, the first liquid inlet pipe 262, the second current collecting piece 212, the third heat sink 243, the second collector 232, the second heat sink 242, the first current collecting piece 211, the first heat sink 241, the first collector 231, the first cross-tube 271, the third collector 233, the fourth heat sink 244, the third current collecting piece 213 and the liquid outlet pipe 264 can be connected in sequence along the flow direction of the coolant to form a circuitous first coolant flow circuit. The circuitous coolant flow circuit can ensure that the coolant has enough time to exchange heat with the battery during the flow process, so that the heat sink 24 can more effectively take away the heat generated by the battery, which helps to keep the temperature of the battery within an appropriate range.

[0071] See also Figure 6 and Figure 7 In this embodiment, the two ends of the fifth heat sink 245 in the second direction Y are connected to the third current collector 213 and the fourth collector 234 respectively, the two ends of the sixth heat sink 246 in the second direction Y are connected to the fourth current collector 214 and the fifth collector 235 respectively, the two ends of the seventh heat sink 247 in the second direction Y are connected to the fifth current collector 215 and the fifth collector 235 respectively, and the two ends of the eighth heat sink 248 in the second direction Y are connected to the fifth current collector 215 and the sixth collector 236 respectively; the two ends of the second cross-tube 272 in the first direction X are connected to the fourth collector 214 and the fifth collector 235 respectively. The collector 234 and the sixth collector 236; in this way, the second liquid inlet pipe 263, the fourth collector 214, the sixth heat sink 246, the fifth collector 235, the seventh heat sink 247, the fifth collector 215, the eighth heat sink 248, the sixth collector 236, the second cross-tube 272, the fourth collector 234, the fifth heat sink 245, the third collector 213 and the liquid outlet pipe 264 can be connected in sequence along the flow direction of the coolant to form a circuitous second coolant flow circuit, and the first coolant flow circuit and the second coolant flow circuit are symmetrically distributed.

[0072] See also Figure 2-Figure 5The liquid cooling mechanism 2 further includes a temperature-equalizing member 28, which is connected to one side of the heat sink 24 in the third direction Z. A battery can be placed on the temperature-equalizing member 28 to transfer the heat generated by the battery to the heat sink 24 through the temperature-equalizing member 28, so that the heat received by the heat sink 24 in contact with the temperature-equalizing member 28 is more uniform, so that the cooling effect of the battery is more uniform, and the problem of uneven cooling effect of different parts of the battery is avoided.

[0073] Optionally, the temperature balancing member 28 includes one temperature balancing plate 281 or a plurality of temperature balancing plates 281 .

[0074] The material of the temperature equalizing plate 281 can be any material with high thermal conductivity, such as copper-based material, aluminum-based material, copper-aluminum composite plate, stainless steel material, etc.

[0075] In this embodiment, the temperature balancing member 28 includes four temperature balancing plates 281. One temperature balancing plate 281 is connected to two heat sinks. The temperature of the high and low pressure zones of a single temperature balancing plate 281 can be distributed more evenly under the effect of the circuitous cooling circuit, thereby improving the overall temperature balancing performance of the battery pack.

[0076] In some other embodiments, the number of temperature averaging plates 281 may be one, two, three, five, or any other number. The temperature averaging plates 281 and the heat sink 24 may also be connected to each other in any manner, such as one temperature averaging plate 281 connected to one heat sink 24, or one temperature averaging plate 281 connected to three heat sinks 24, or one temperature averaging plate 281 connected to four heat sinks. No limitation is made here.

[0077] See also Figure 2-Figure 7 The liquid cooling mechanism 2 also includes a sealing cover 29, an end of the first current collecting member 211 away from the second current collecting member 212 is connected to the sealing cover 29, an end of the fifth current collecting member 215 away from the fourth current collecting member 214 is connected to the sealing cover 29, an end of the first current collecting member 231 away from the second current collecting member 232 is connected to the sealing cover 29, and an end of the sixth current collecting member 236 away from the fifth current collecting member 235 is connected to the sealing cover 29.

[0078] See also Figure 1-Figure 4 The battery pack further includes a thermally conductive adhesive layer 3, which is connected to the side of the temperature-equalizing member 28 that is away from the heat sink 24 in the third direction Z. The battery can be connected to the temperature-equalizing member 28 through the thermally conductive adhesive layer 3, and the thermally conductive adhesive layer can fill the air gap between the temperature-equalizing member 28 and the battery to increase the contact area between the temperature-equalizing member 28 and the heat sink 24, and quickly and evenly transfer the heat of the battery to the temperature-equalizing plate 281, which helps to improve the heat dissipation efficiency of the battery.

[0079] In this embodiment, the number of the thermal conductive adhesive layers 3 is four, and the four thermal conductive adhesive layers 3 are respectively connected to four temperature balancing plates 281 .

[0080] See also Figure 1-Figure 4 The battery pack further includes a rubber stopper 4, which is connected to the temperature-equalizing member 28 and forms a rubber space 40 with the temperature-equalizing member 28, and the thermal conductive adhesive layer 3 is disposed in the rubber space 40. By using the rubber stopper 4 and forming the rubber space 40 with the temperature-equalizing member 28, the thickness of the thermal conductive adhesive layer 3 can be effectively controlled by the rubber stopper 4, so as to prevent the thermal conductive adhesive layer 3 from overflowing to the box body 1 and being bonded to the box body 1.

[0081] The glue blocking member 4 includes a glue blocking strip 41 . The glue blocking strip 41 is connected to two ends of the temperature balancing plate 281 in the first direction X and forms a glue containing space 40 with the temperature balancing plate 281 .

[0082] See also Figure 3-Figure 4 The battery pack further includes an elastic support member 5, which is connected to the side of the heat sink 24 away from the temperature equalizing member 28. The liquid cooling mechanism 2 and other components in the box body 1 can be supported by the compression rebound force of the elastic support member 5, and the installation and assembly errors of the components in the box body 1 can be absorbed by the compressibility of the elastic support member 5.

[0083] The material of the elastic support member 5 can be any elastic material such as silicone foam, sponge, rubber, silicone, etc. that can be used to support the liquid cooling mechanism 2 and other components in the box body 1, and is not limited here.

[0084] Optionally, the elastic supporting member 5 includes one or more elastic supporting layers 51 .

[0085] In this embodiment, the elastic support member 5 includes eight elastic support layers 51 , and the eight elastic support layers 51 are respectively connected to eight heat sinks 24 .

[0086] In some other embodiments, the number of the elastic supporting layers 51 may be one, two, three, four, five or any other number, which is not limited here.

[0087] The utility model also provides an electric device, which comprises any one of the above-mentioned battery packs.

[0088] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack having a first direction (X) and a second direction (Y) intersecting each other, characterized in that: include: Box body (1); A liquid cooling mechanism (2) is arranged in the housing (1), the liquid cooling mechanism (2) comprising a first isolating member (22), a current collector (23), a plurality of current collectors (21) and a plurality of heat sinks (24), the plurality of current collectors (21) being distributed along the first direction (X), the heat sinks (24) having two ends in the second direction (Y) connected to the current collector (21) and the current collector (23) respectively, and the first isolating member (22) having a first end (221) and a second end (222) opposite to each other in the first direction (X); Along the first direction (X), two adjacent current collecting members (21) are connected via the first isolating member (22); the first end (221) is provided with a first connecting groove (223); one end of the current collecting member (21) is accommodated in the first connecting groove (223) and welded to the groove wall of the first connecting groove (223).

2. The battery pack according to claim 1, characterized in that: The second end (222) is provided with a second connecting groove (224); along the first direction (X), the other end of the current collecting member (21) is accommodated in the second connecting groove (224) and welded to the groove wall of the second connecting groove (224); and an isolation wall (225) is provided between the first connecting groove (223) and the second connecting groove (224).

3. The battery pack according to claim 1, characterized in that: The current collecting member (21) is in a tubular structure, the first isolating member (22) is in a cylindrical structure, and a positioning plane (226) is provided on the outer side wall of the first isolating member (22).

4. The battery pack according to claim 1, characterized in that: The liquid cooling mechanism (2) further comprises a second isolation member (25); There are a plurality of the current collectors (23), the plurality of the current collectors (23) are distributed along the first direction (X), and two adjacent current collectors (23) are connected via the second isolation member (25).

5. The battery pack according to claim 4, characterized in that: The liquid cooling mechanism (2) further comprises a cooling liquid conveying member (26) and a cross-connection member (27), wherein the cooling liquid conveying member (26) is connected to the current collecting member (21), and the cross-connection member (27) comprises a first cross-tube (271), wherein two ends of the first cross-tube (271) in the first direction (X) are respectively connected to the two current collecting members (23).

6. The battery pack according to claim 5, characterized in that: The plurality of current collecting pieces (21) include a first current collecting piece (211), a second current collecting piece (212), and a third current collecting piece (213) distributed along the first direction (X); The plurality of busbars (23) include a first busbar (231), a second busbar (232), and a third busbar (233) distributed along the first direction (X); The cooling liquid conveying member (26) comprises a flange (261), a first liquid inlet pipe (262) and a liquid outlet pipe (264); a liquid inlet channel (2611) and a liquid outlet channel (2612) are provided inside the flange (261); the first liquid inlet pipe (262) is respectively connected to the liquid inlet channel (2611) and the second flow collecting member (212); and the liquid outlet pipe (264) is respectively connected to the third flow collecting member (213) and the liquid outlet channel (2612); The plurality of heat sinks (24) include a first heat sink (241), a second heat sink (242), a third heat sink (243) and a fourth heat sink (244); two ends of the first heat sink (241) in the second direction (Y) are respectively connected to the first current collector (211) and the first current collector (231); two ends of the second heat sink (242) in the second direction (Y) are respectively connected to the first current collector (211) and the second current collector (232); two ends of the third heat sink (243) in the second direction (Y) are respectively connected to the second current collector (212) and the second current collector (232); and two ends of the fourth heat sink (244) in the second direction (Y) are respectively connected to the third current collector (213) and the third current collector (233); Two ends of the first cross-tube (271) in the first direction (X) are respectively connected to the first collector (231) and the third collector (233).

7. The battery pack according to any one of claims 1 to 6, characterized in that: The battery pack further has a third direction (Z), and the first direction (X), the second direction (Y) and the third direction (Z) intersect each other; The liquid cooling mechanism (2) further comprises a temperature equalizing element (28), wherein the temperature equalizing element (28) is connected to one side of the heat sink (24) in the third direction (Z).

8. The battery pack according to claim 7, characterized in that: It also includes a heat-conducting adhesive layer (3), wherein the heat-conducting adhesive layer (3) is connected to the temperature-averaging component (28) on a side facing away from the heat dissipation component (24) in the third direction (Z).

9. The battery pack according to claim 7, characterized in that: It also comprises an elastic support member (5), wherein the elastic support member (5) is connected to a side of the heat dissipation member (24) facing away from the temperature equalizing member (28).

10. An electrical device, characterized in that: A battery pack comprising the battery pack as claimed in any one of claims 1 to 9.

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