Battery pack and electrical device

Abstract

A battery pack and an electrical device. The battery pack comprises an enclosure body (1), the enclosure body (1) being provided with an accommodation cavity (10); a plurality of batteries (2), each battery (2) comprising a body (20) and a post (21) arranged on one side of the body (20); and a partition member (3), the partition member (3) being arranged in the accommodation cavity (10), the partition member (3) being connected to the enclosure body (1), the partition member (3) partitioning the accommodation cavity (10) to form a first space (100) and a second space (101), and the partition member (3) being provided with a plurality of mounting holes (30). The mounting holes (30) communicate the first space (100) and the second space (101), the body (20) is arranged in the first space (100), and the posts (21) pass through the mounting holes (30). A sealing groove (31) is provided on the side of the partition member (3) close to the body (20), the sealing groove (31) surrounding the mounting holes (30), the sealing groove (31) being internally provided with a sealing portion (4), and the sealing portion (4) being sealedly connected to the body (20) and the partition member (3).

Description

Battery pack and electrical equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 15, 2023, with application number 202311733462.X and application name “A Battery Pack and Electrical Equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to, but is not limited to, the field of battery technology, and specifically to a battery pack and electrical equipment. Background Art

[0003] The internal batteries of the battery pack will generate heat during use, especially during high-power charging and discharging. A large amount of heat will be generated in the battery pack. If the heat cannot be dissipated in time, the battery will be in a high-temperature state for a long time, which will easily reduce the battery life and even cause thermal runaway of the battery, resulting in more serious safety accidents. Technical Solutions

[0004] An embodiment of the present application provides a battery pack; an embodiment of the present application also provides an electrical device using the above-mentioned battery pack.

[0005] A battery pack according to an embodiment of the present application includes:

[0006] A box body having a receiving cavity;

[0007] A plurality of batteries, each comprising a body and a terminal disposed on one side of the body;

[0008] A separator, the separator is arranged in the accommodating cavity, the separator is connected to the box body, the separator divides the accommodating cavity and forms a first space and a second space, the separator is provided with a plurality of assembly holes, the assembly holes connect the first space and the second space, the main body is arranged in the first space, the pole is passed through the assembly hole, the separator is provided with a sealing groove on one side close to the main body, the sealing groove surrounds the assembly hole, a sealing portion is provided in the sealing groove, and the sealing portion seals and connects the main body and the separator.

[0009] Optionally, the body includes a first wall, a second wall, and a peripheral wall connected between the first wall and the second wall, the pole is provided on the first wall, and the sealing portion is connected to the first wall;

[0010] The box body includes a first bottom plate and a frame surrounding the first bottom plate, the first bottom plate and the frame form the accommodating cavity, and the second wall is connected to the first bottom plate;

[0011] The battery pack also includes a first partition portion arranged in the first space, the first partition portion is arranged around the peripheral wall, the first partition portion, the adjacent batteries, the first bottom plate and the frame together form a heat exchange channel, and the heat exchange channel and the partition are sealed by the first partition portion.

[0012] Optionally, the sealing groove has a first groove portion surrounding the assembly hole and a second groove portion surrounding the first groove portion;

[0013] The sealing portion includes a first sealing member provided in the first groove portion and a second sealing member provided in the second groove portion, and the first sealing member and the second sealing member are respectively sealed and connected to the body.

[0014] Optionally, the sealing groove further has a third groove portion located on a side of the first groove portion close to the assembly hole, and the first groove portion surrounds the third groove portion;

[0015] The sealing portion further includes a third sealing member filled in the third groove portion, and the third sealing member is sealed and connected to the body.

[0016] Optionally, the first groove portion and the second groove portion are connected, and the first sealing member is connected to the second sealing member.

[0017] Optionally, the first groove portion and the third groove portion are connected, and the first sealing member is connected to the third sealing member.

[0018] Optionally, the battery pack further includes a second partition portion provided in the first space, the second partition portion is arranged around the peripheral wall and is spaced apart from the first partition portion, and the heat exchange channel is located between the first partition portion and the second partition portion.

[0019] Optionally, the first spacer is sealed and connected to the partition.

[0020] Optionally, the second spacer is sealed and connected to the first bottom plate.

[0021] Optionally, the box body also includes a second bottom plate, which is arranged on the side of the first bottom plate away from the accommodating cavity, the second bottom plate is connected to the frame, and the first bottom plate, the second bottom plate and the frame form a bottom cavity, the bottom cavity is connected to the heat exchange channel, and the frame is provided with a liquid inlet connected to the heat exchange channel and a liquid outlet connected to the bottom cavity.

[0022] Optionally, the battery pack has a first direction, a second direction, and a third direction that intersect in pairs, the first spaces and the second spaces are arranged in the first direction, a plurality of the batteries are arranged in the third direction to form a plurality of rows, and the plurality of rows of batteries are arranged in the second direction;

[0023] The plurality of heat exchange channels extend along the third direction and are arranged in an array along the second direction, the plurality of heat exchange channels including a first heat exchange channel and a second heat exchange channel that are interconnected, and at least one third heat exchange channel located between the first heat exchange channel and the second heat exchange channel;

[0024] The frame includes a liquid inlet cavity, a liquid outlet cavity, and a confluence cavity located on both sides of the liquid outlet cavity in the second direction. The liquid inlet is connected to the liquid inlet cavity and is connected to the third heat exchange channel through the liquid inlet cavity. The liquid outlet is connected to the liquid outlet cavity and is connected to the bottom cavity through the liquid outlet cavity. The first heat exchange channel and the second heat exchange channel are connected to the confluence cavity and are connected to the bottom cavity through the confluence cavity.

[0025] Optionally, the frame includes a first frame portion, a third frame portion, and a second frame portion connected between the first frame portion and the third frame portion, the liquid inlet and the liquid outlet are respectively provided in the second frame portion, and the liquid inlet cavity, the liquid outlet cavity, and the confluence cavity are located within the second frame portion;

[0026] The first heat exchange channel is located between the first frame and one row of the batteries, and the second heat exchange channel is located between the second frame and another row of the batteries.

[0027] Optionally, the battery pack further includes a plurality of flow dividers, the plurality of flow dividers being spaced apart in the bottom cavity in the second direction, the flow dividers being connected between the first bottom plate and the second bottom plate to divide the bottom cavity and form a plurality of sub-flow channels;

[0028] The diverter has a first end and a second end in the third direction, the frame is provided with a first opening connecting the confluence chamber and the bottom chamber, and a second opening connecting the liquid outlet chamber and the bottom chamber, at least part of the first end of the diverter is connected to the frame and separated between the first opening and the second opening, and there is a gap between the second end of at least part of the diverter and the frame to connect the adjacent sub-channels.

[0029] Optionally, the battery pack further includes a partition and a control module provided in the accommodating cavity, wherein the partition extends in the second direction and connects the first bottom plate and the frame to separate the accommodating cavity and form a third space, wherein the third space is separated from the first space, and the control module is provided in the third space, and the control module is electrically connected to the battery.

[0030] Correspondingly, an electrical device described in an embodiment of the present application includes the above-mentioned battery pack. Beneficial effects

[0031] The battery pack of the embodiment of the present application includes a case, a plurality of batteries, and a separator, wherein the case has a storage cavity, the battery includes a body and a pole arranged on one side of the body, the separator is arranged in the storage cavity, the separator is connected to the case, the separator separates the storage cavity and forms a first space and a second space, the separator has a plurality of assembly holes, the assembly holes connect the first space and the second space, the body is arranged in the first space, the pole is passed through the assembly hole, a sealing groove is provided on the side of the separator close to the body, the sealing groove surrounds the assembly hole, a sealing portion is provided in the sealing groove, and the sealing portion seals the body and the separator. The assembly hole can quickly locate the battery installation position and separate the pole on the side facing the second space. The sealing groove surrounding the assembly hole and the sealing portion sealingly connected to the body are conducive to improving the sealing effect between the first space and the assembly hole, preventing the first space and the second space from being connected to each other. The battery can be cooled by a heat exchange medium as needed, thereby maintaining a good operating temperature of the battery, which is conducive to improving the safety of battery use and extending the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] FIG1 is a schematic structural diagram of a battery pack according to Example 1 of the present application;

[0034] FIG2 is an exploded view of the battery pack of Example 1 of the present application;

[0035] FIG3 is a schematic cross-sectional view of the structure along line AA in FIG1 ;

[0036] FIG4 is a partial enlarged view of portion C in FIG3 ;

[0037] FIG5 is an exploded view of the battery pack according to Example 1 of the present application from another perspective;

[0038] FIG6 is a partial enlarged view of portion D in FIG5 ;

[0039] FIG7 is a schematic cross-sectional view of the structure along line BB in FIG1 ;

[0040] FIG8 is a schematic diagram of the partial structure of the second frame portion and the accommodating cavity in Example 1 of the present application;

[0041] FIG9 is a schematic structural diagram of a battery pack according to Example 2 of the present application;

[0042] FIG10 is an exploded view of the battery pack of Example 2 of the present application;

[0043] FIG11 is a schematic cross-sectional view of the structure along line EE in FIG9 ;

[0044] FIG12 is a partial enlarged view of portion F in FIG11 ;

[0045] FIG13 is an exploded view of the battery pack according to Example 2 of the present application from another perspective;

[0046] FIG14 is a partial enlarged view of portion G in FIG13;

[0047] FIG15 is a schematic structural diagram of a battery pack according to Example 3 of the present application;

[0048] FIG16 is an exploded view of the battery pack of Example 3 of the present application;

[0049] FIG17 is a schematic cross-sectional view of the structure along line HH in FIG15;

[0050] FIG18 is a partial enlarged view of portion I in FIG17;

[0051] FIG19 is an exploded view of the battery pack according to Example 3 of the present application from another perspective;

[0052] FIG20 is a partial enlarged view of portion J in FIG19 ;

[0053] Reference numerals: 1, housing; 10, accommodating chamber; 100, first space; 101, second space; 103, third space; 104, heat exchange channel; 1040, first heat exchange channel; 1041, second heat exchange channel; 1042, third heat exchange channel; 105, opening; 11, first bottom plate; 12, frame; 120, liquid inlet chamber; 121, liquid outlet chamber; 122, confluence chamber; 123, first frame portion; 124, second frame portion; 125, third frame portion; 126, fourth frame portion; 127, first opening; 128, second opening; 129, third opening; 13, second bottom plate; 14, bottom chamber; 140, sub-channel; 141, gap; 15, liquid inlet; 16. Liquid outlet; 17. Top plate; 18. Diverter; 180. First end; 181. Second end; 19. Partition; 2. Battery; 20. Main body; 200. First wall; 201. Second wall; 202. Peripheral wall; 21. Pole; 3. Partition; 30. Assembly hole; 31. Sealing groove; 310. First groove portion; 311. Second groove portion; 312. Third groove portion; 32. Pressure relief hole; 4. Sealing portion; 40. First sealing member; 41. Second sealing member; 42. Third sealing member; 5. First spacer portion; 6. Second spacer portion; 7. Side plate; 8. Control module; 80. First plug; 81. Second plug; X, first direction; Y, second direction; Z, third direction.

[0054] Implementation Methods of the Application

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0056] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "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 application 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 cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined.

[0057] During the daily charging and discharging process of the battery pack, the batteries will generate heat. If the batteries are in a high temperature state for a long time, the battery service life will be reduced and even thermal runaway of the battery will be caused, which will lead to more serious safety accidents. For this reason, a heat exchange plate is usually arranged in the battery pack to fit the battery. The heat exchange medium is introduced into the heat exchange plate to cool the battery in time. At the same time, when the battery is used under low external ambient temperature, the heat exchange medium can also be used to heat the battery to maintain a good operating temperature of the battery. As a part of the heat exchange plate that holds the heat exchange medium and realizes heat exchange with the battery, it will also lose energy.

[0058] In view of this, in combination with Figures 1 to 20, an embodiment of the present application provides a battery pack, aiming to overcome at least one of the above-mentioned technical problems.

[0059] In each of the following embodiments, a first direction X, a second direction Y, and a third direction Z intersecting each other are introduced, wherein the first direction X is parallel to the thickness direction of the entire battery pack in this embodiment, the second direction Y is parallel to the width direction of the entire battery pack in this embodiment, and the third direction Z is parallel to the length direction of the entire battery pack in this embodiment.

[0060] Example 1:

[0061] 1 to 8 , a battery pack includes a housing 1, a plurality of batteries 2, and a separator 3. The housing 1 has a receiving cavity 10 and an opening 105 communicating with the receiving cavity 10. The battery 2 includes a body 20 and a terminal 21 disposed on one side of the body 20. The separator 3 is disposed in the receiving cavity 10. The separator 3 is connected to the housing 1 and separates the receiving cavity 10, forming a first space 100 and a second space 101 in a first direction X. The separator 3 has a plurality of assembly holes 30 communicating with the first space 100 and the second space 101. The body 20 is disposed in the first space 100, and the terminal 21 is disposed in the assembly holes 30. A sealing groove 31 is provided on a side of the separator 3 close to the body 20. The sealing groove 31 surrounds the assembly hole 30, and a sealing portion 4 is disposed within the sealing groove 31. The sealing portion 4 seals and connects the body 20 and the separator 3.

[0062] The assembly hole 30 can quickly locate the installation position of the battery 2, so that the pole 21 is separated on the side facing the second space 101. The sealing groove 31 surrounding the assembly hole 30 and the sealing portion 4 of the sealing connection body 20 are conducive to improving the sealing effect between the first space 100 and the assembly hole 30, avoiding the first space 100 and the second space 101 from being connected to each other. The battery 2 can be cooled by a heat exchange medium as needed, thereby maintaining a good operating temperature of the battery 2, which is conducive to improving the safety of the battery 2 and extending the service life of the battery 2.

[0063] Specifically, in some embodiments, referring to Figures 1 to 4, the body 20 includes a first wall 200, a second wall 201, and a peripheral wall 202 connected between the first wall 200 and the second wall 201. The battery 2 in this embodiment takes a square battery 2 as an example. It will be understood that the peripheral wall 202 is the four side walls surrounding the first wall 200 and the second wall 201. In addition, in this embodiment, the first wall 200 is configured as the top cover of the square battery 2, and two poles 21 are provided and extend through the first wall 200. In addition, the pressure relief structure of the square battery 2 is also provided on the first wall 200.

[0064] Correspondingly, referring to Figures 2, 3, 5 and 6, two assembly holes 30 are opened on the separator 3 corresponding to the two poles 21. In this embodiment, the pole 21 passes through the assembly hole 30 and extends to the second space 101. In addition, a pressure relief hole 32 is also opened on the separator 3 corresponding to the pressure relief structure of the square battery 2, and the pressure relief hole 32 is not connected to the two assembly holes 30.

[0065] The first wall 200 is in contact with the separator 3. When the battery 2 experiences thermal runaway, the pressure relief hole 32 can allow the pressure relief structure of the battery 2 to independently relieve pressure and exhaust, reducing the possibility of high-temperature gas being discharged into the first space 100 and avoiding damage to other batteries 2. At the same time, it is convenient to set up an exhaust structure on the box body 1, avoiding the need for the battery pack pressure relief and exhaust structure to communicate with the first space 100 and the generation of additional sealing requirements. At the same time, the sealing portion 4 is connected to the first wall 200, and in this embodiment, the sealing groove 31 surrounds the two assembly holes 30 and the outside of the pressure relief hole 32. The sealing portion 4 can be filled with a sealant in the sealing groove 31. The sealing groove 31 cooperates with the sealing portion 4 to form a sealing structure between the assembly hole 30, the pressure relief hole 32 and the first space 100, which helps to reduce the problem of heat exchange medium leaking toward the second space 101 when the heat exchange medium is introduced into the first space 100.

[0066] Referring to Figures 1 to 3, the housing 1 includes a first bottom plate 11 and a frame 12 surrounding the first bottom plate 11. The first bottom plate 11 and the frame 12 define a receiving chamber 10, and a second wall 201 connects to the first bottom plate 11. Furthermore, the housing 1 includes a top plate 17 for sealing the opening 105. The battery pack also includes a first partition 5 disposed within the first space 100. The first partition 5 is disposed around the peripheral wall 202. The first partition 5, the adjacent batteries 2, the first bottom plate 11, and the frame 12 collectively enclose a heat exchange channel 104. The heat exchange channel 104 is sealed from the partition 3 by the first partition 5.

[0067] It can be understood that in this embodiment, the first spacer 5 is adapted to the shape of the peripheral wall 202 of the square battery 2, that is, it is designed as a frame structure surrounding the peripheral wall 202, and the multiple batteries 2 are spaced apart from each other by the first spacer 5:

[0068] First, it can provide a positioning reference for the spacing between adjacent batteries 2, thereby improving the convenience of battery pack assembly;

[0069] Secondly, the first spacers 5 are spaced between adjacent batteries 2 to form heat exchange channels 104 for the heat exchange medium to flow, so that the heat exchange medium can fully contact the batteries 2;

[0070] Third, the first spacer 5 is spaced between adjacent batteries 2 and provides a buffer space for the normal expansion of the battery 2 during use;

[0071] Fourthly, the first spacer 5 can also assist the sealing groove 31 and the sealing portion 4 to further improve the sealing effect between the heat exchange channel 104 and the second space 101 .

[0072] In some embodiments, referring to Figures 2, 3, and 5, the battery pack further includes a second spacer 6 disposed within the first space 100. The second spacer 6 is disposed around the peripheral wall 202 and spaced from the first spacer 5. The heat exchange channel 104 is located between the first spacer 5 and the second spacer 6. The second spacer 6 cooperates with the first spacer 5 in the first direction X to form a stable spacing between adjacent batteries 2 and between the batteries 2 and the housing 1. Furthermore, before the batteries 2 are placed within the housing 1, the second spacer 6 can be secured to the first base plate 11 to facilitate quick positioning of the batteries 2. This simplifies the processing and assembly process compared to providing additional positioning grooves or other structures on the first base plate 11.

[0073] Furthermore, it should be noted that, to ensure a large heat exchange area between the main body 20 and the heat exchange medium, referring to Figures 3 and 4 , the first spacer 5 is in contact with and sealed against the partition 3, and the second spacer 6 is in contact with and sealed against the first bottom plate 11. This ensures a large contact area between the heat exchange channel 104 and the peripheral wall 202 in the first direction X, thereby improving the heat exchange effect between the heat exchange channel 104 and the battery 2.

[0074] In some embodiments, referring to Figures 3, 5, 7, and 8, the housing 1 further includes a second bottom plate 13, which is disposed on a side of the first bottom plate 11 facing away from the accommodating chamber 10. The second bottom plate 13 is connected to the frame 12, and the first bottom plate 11, the second bottom plate 13, and the frame 12 define a bottom chamber 14. The bottom chamber 14 communicates with the heat exchange channel 104, and the frame 12 defines a liquid inlet 15 communicating with the heat exchange channel 104 and a liquid outlet 16 communicating with the bottom chamber 14. In other words, in this embodiment, the housing 1 has two heat exchange structures: one is the multiple heat exchange channels 104 in the first space 100, where a heat exchange medium can be introduced through the liquid inlet 15 and then directly contact and exchange heat with the battery 2 through the multiple heat exchange channels 104; the other is where the heat exchange medium flows into the bottom chamber 14, thereby indirectly contacting and exchanging heat with the second wall 201 through the first bottom plate 11.

[0075] Specifically, in some embodiments, referring to Figures 1 to 8 , multiple batteries 2 are arranged in a third direction Z to form multiple rows, and the multiple rows of batteries 2 are arranged in a second direction Y. In this case, multiple heat exchange channels 104 are formed, extending along the third direction Z and arranged along the second direction Y. These multiple heat exchange channels 104 include interconnected first and second heat exchange channels 1040, 1041, and at least one third heat exchange channel 1042 located between the first and second heat exchange channels 1040, 1041. As shown in Figure 8 , in this embodiment, four rows of batteries 2 are arranged in the second direction Y, so three third heat exchange channels 1042 are provided. Furthermore, it should be noted that to facilitate rapid assembly of the entire battery pack 2, the actual battery pack also includes side panels 7, which are used to connect the rows of batteries 2 on both sides in the second direction Y. The actual first and second heat exchange channels 1040, 1041 are also located between the rows of batteries 2 and the side panels 7.

[0076] As shown in Figures 1, 3, and 7, the frame 12 includes a liquid inlet chamber 120, a liquid outlet chamber 121, and confluence chambers 122 located on either side of the liquid outlet chamber 121 in the second direction Y. The liquid inlet 15 connects to the liquid inlet chamber 120 and, through the liquid inlet chamber 120, to the third heat exchange channel 1042. The liquid outlet 16 connects to the liquid outlet chamber 121 and, through the liquid outlet chamber 121, to the bottom chamber 14. The first heat exchange channel 1040 and the second heat exchange channel 1041 connect to the confluence chamber 122 and, through the confluence chamber 122, to the bottom chamber 14. Specifically, after the heat exchange medium is introduced into the liquid inlet chamber 120 through the liquid inlet 15, it flows through the third heat exchange channel 1042 and then flows to the first heat exchange channel 1040 and the second heat exchange channel 1041 on either side in the second direction Y, thereby facilitating uniform flow of the heat exchange medium and achieving a sufficient heat exchange effect.

[0077] Specifically, referring to Figures 1 to 8, the frame 12 includes a first frame portion 123 and a third frame portion 125 spaced apart in the second direction Y, and a second frame portion 124 and a fourth frame portion 126 spaced apart in the third direction Z. The second frame portion 124 and the fourth frame portion 126 are connected between the first frame portion 123 and the third frame portion 125. The liquid inlet 15 and the liquid outlet 16 are respectively provided in the second frame portion 124, and the liquid inlet cavity 120, the liquid outlet cavity 121 and the confluence cavity 122 are located in the second frame portion 124. The second frame portion 124 is correspondingly provided with a first opening 127 connecting the confluence cavity 122 and the bottom cavity 14, a second opening 128 connecting the liquid outlet cavity 121 and the bottom cavity 14, and a third opening 129 connecting the liquid inlet cavity 120 and the third heat exchange channel 1042. The first heat exchange channel 1040 is located between the first frame portion 123 and one row of batteries 2, and the second heat exchange channel 1041 is located between the second frame portion 124 and another row of batteries 2. This ensures that after the heat exchange medium flows through the plurality of third heat exchange channels 1042, it can reach the first frame portion 123 and the third frame portion 125 along the second direction Y to fully exchange heat with the plurality of batteries 2.

[0078] In some embodiments, referring to FIG5 , the battery pack further includes a plurality of flow diverters 18 , which are spaced apart in the bottom cavity 14 in the second direction Y. The flow diverters 18 are connected between the first bottom plate 11 and the second bottom plate 13 to separate the bottom cavity 14 and form a plurality of sub-flow channels 140 . Specifically, the flow diverters 18 can be integrally formed with the first bottom plate 11 and sealed to the second bottom plate 13 .

[0079] 1 to 8 , the diverter 18 has a first end 180 and a second end 181 in the third direction Z. The first end 180 of at least a portion of the diverter 18 is connected to the frame 12 and separated between the first opening 127 and the second opening 128. A gap 141 is formed between the second end 181 of at least a portion of the diverter 18 and the frame 12 to connect adjacent sub-channels 140. In this embodiment, three diverters 18 are used as an example, wherein a diverter 18 is respectively provided between two corresponding first openings 127 and adjacent second openings 128. The diverter 18 blocks the space between the first opening 127 and the second opening 128, preventing the heat exchange medium from being directly discharged from the liquid outlet 16 after being introduced into the confluence chamber 122. The heat exchange medium in the bottom chamber 14 can be guided by the diverter 18, fully flow along the first direction X, and indirectly contact and exchange heat with the battery 2, thereby improving the heat exchange effect of the heat exchange medium.

[0080] In addition, it should be noted that, referring to Figures 2 and 3, the battery pack also includes a partition 19 and a control module 8 provided in the accommodating cavity 10. In this embodiment, the partition 19 is provided on the side of the partition 3 away from the liquid inlet 15. The partition 19 extends in the second direction Y and connects the first bottom plate 11 and the frame 12 to separate the accommodating cavity 10 and form a third space 103 separated from the first space 100. The control module 8 is installed in the third space 103, and the control module 8 is electrically connected to the battery 2.

[0081] It should be noted that the control module 8 can be a battery management system (BMS) or a battery disconnect unit (BDU). In this embodiment, two control modules 8, BMS and BDU, are arranged at the same time as an example. Correspondingly, as shown in Figure 1, the frame 12 is provided with a first plug 80 and a second plug 81 away from the liquid inlet 15. The first plug 80 and the second plug 81 can be electrically connected to the control module 8. The first plug 80 and the second plug 81 can be the high-voltage plug and the low-voltage plug of the battery pack, which will not be repeated here.

[0082] Accordingly, embodiments of the present application provide an electrical device comprising the aforementioned battery pack. The electrical device may be an electronic device, a power storage device, or a powered vehicle. It is understood that the electrical device may possess all the technical features and corresponding beneficial effects of the aforementioned battery pack, and further details are omitted here.

[0083] Example 2:

[0084] 9 to 14 , this embodiment differs from Example 1 in that the sealing groove 31 includes a first groove portion 310 surrounding the assembly hole 30 and a second groove portion 311 surrounding the first groove portion 310. In this embodiment, only a single assembly hole 30 is provided, and the pole 21 and the pressure relief structure are simultaneously exposed to the second space 101. The sealing portion 4 includes a first sealing member 40 provided in the first groove portion 310 and a second sealing member 41 provided in the second groove portion 311. The first sealing member 40 and the second sealing member 41 respectively seal the connection body 20.

[0085] Furthermore, the first groove portion 310 and the second groove portion 311 are connected, and the first seal 40 is connected to the second seal 41. Specifically, the first seal 40 is set to an elastic material, and a sealing foam can be used, and the second seal 41 can be made of sealant. The first seal 40 can be bonded to the second seal 41. The first seal 40 can provide buffer protection for the battery 2 by relying on its own elasticity, and the second seal 41 can improve the fixing effect of the first seal 40. The first groove portion 310 and the second groove portion 311 have a height difference in the first direction X, wherein the height of the first groove portion 310 in the first direction X is set to be greater than the height of the second groove portion 311 in the first direction X, so as to provide sufficient elastic buffer space for the elastic first seal 40.

[0086] Structurally, a first seal 40 and a second seal 41 are sequentially provided between the first space 100 and the assembly hole 30 to provide a double-layer seal, further improving the sealing effect between the first space 100 and the second space 101. Furthermore, by configuring the first seal 40 to comprise elastic sealing foam, the cushioning protection effect on the battery 2 is further enhanced.

[0087] Example 3:

[0088] 15 to 20 , this embodiment differs from Embodiment 2 in that the sealing groove 31 further includes a third groove portion 312 located on a side of the first groove portion 310 near the assembly hole 30. The first groove portion 310 surrounds the third groove portion 312. The design height of the third groove portion 312 in the first direction X can be the same as that of the second groove portion 311. The sealing portion 4 further includes a third sealing member 42 filled in the third groove portion 312. The third sealing member 42 is sealed to the body 20. Similarly, the third sealing member 42 can be made of the same material as the second sealing member 41, such as a sealant material.

[0089] Specifically, the first groove 310 and the third groove 312 are interconnected, and the first seal 40 is connected to the third seal 42. The first seal 40 can also be bonded to the third seal 42, further enhancing the securing effect of the first seal 40. Structurally, the second seal 41, the first seal 40, and the third seal 42 are sequentially provided between the first space 100 and the assembly hole 30 to form a three-layer seal, further enhancing the sealing effect between the first space 100 and the second space 101. Furthermore, by configuring the first seal 40 with an elastic sealing foam, the cushioning protection effect of the battery 2 is further enhanced.

[0090] The above is a detailed introduction to a battery pack and electrical equipment provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in each of the above embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of each embodiment of the present application.

Claims

1. A battery pack, wherein: include: A box body, wherein the box body has a containing cavity; A plurality of batteries, each battery comprising a body and a pole arranged on one side of the body; A partition, wherein the partition is arranged in the accommodating cavity, the partition is connected to the box body, the partition divides the accommodating cavity and forms a first space and a second space, the partition is provided with a plurality of assembly holes, the assembly holes connect the first space and the second space, the body is arranged in the first space, the pole is passed through the assembly holes, a sealing groove is provided on a side of the partition close to the body, the sealing groove surrounds the assembly hole, a sealing portion is provided in the sealing groove, and the sealing portion seals and connects the body and the partition.

2. The battery pack according to claim 1, wherein: The body includes a first wall, a second wall, and a peripheral wall connected between the first wall and the second wall, the pole is arranged on the first wall, and the sealing portion is connected to the first wall; The box body comprises a first bottom plate and a frame surrounding the first bottom plate, the first bottom plate and the frame enclose the accommodating cavity, and the second wall is connected to the first bottom plate; The battery pack also includes a first spacer disposed in the first space, the first spacer is arranged around the peripheral wall, the first spacer, the adjacent batteries, the first bottom plate and the frame together form a heat exchange channel, and the heat exchange channel and the partition are sealed by the first spacer.

3. The battery pack according to claim 1, wherein: The sealing groove has a first groove portion surrounding the assembly hole and a second groove portion surrounding the first groove portion; The sealing portion includes a first sealing member provided in the first groove portion and a second sealing member provided in the second groove portion, and the first sealing member and the second sealing member are respectively sealed and connected to the body.

4. The battery pack according to claim 3, wherein: The sealing groove further comprises a third groove portion located on a side of the first groove portion close to the assembly hole, and the first groove portion surrounds the third groove portion; The sealing portion further includes a third sealing member filled in the third groove portion, and the third sealing member is sealingly connected to the body.

5. The battery pack according to claim 4, wherein: The first groove portion is connected to the second groove portion, and the first sealing member is connected to the second sealing member; 6. The battery pack according to claim 4, wherein: The first groove portion is communicated with the third groove portion, and the first sealing member is connected to the third sealing member.

7. The battery pack according to claim 2, wherein: The battery pack further includes a second partition portion disposed in the first space, the second partition portion is disposed around the peripheral wall and is spaced apart from the first partition portion, and the heat exchange channel is located between the first partition portion and the second partition portion.

8. The battery pack according to claim 2, wherein: The first partition is sealingly connected to the partition.

9. The battery pack according to claim 7, wherein: The second partition is sealingly connected to the first bottom plate.

10. The battery pack according to claim 2, wherein: The box body also includes a second bottom plate, which is arranged on a side of the first bottom plate away from the accommodating cavity, the second bottom plate is connected to the frame, and the first bottom plate, the second bottom plate and the frame form a bottom cavity, the bottom cavity is connected to the heat exchange channel, and the frame is provided with a liquid inlet connected to the heat exchange channel and a liquid outlet connected to the bottom cavity.

11. The battery pack according to claim 10, wherein: The battery pack has a first direction, a second direction and a third direction intersecting in pairs, the first space and the second space are arranged in the first direction, a plurality of the batteries are arranged in the third direction to form a plurality of rows, and the plurality of rows of batteries are arranged in the second direction; The plurality of heat exchange channels extend along the third direction and are arranged in an array along the second direction, and the plurality of heat exchange channels include a first heat exchange channel and a second heat exchange channel that are interconnected, and at least one third heat exchange channel located between the first heat exchange channel and the second heat exchange channel; The frame has a liquid inlet cavity, a liquid outlet cavity and a confluence cavity located on both sides of the liquid outlet cavity in the second direction, which are separated from each other. The liquid inlet is connected to the liquid inlet cavity and is connected to the third heat exchange channel through the liquid inlet cavity. The liquid outlet is connected to the liquid outlet cavity and is connected to the bottom cavity through the liquid outlet cavity. The first heat exchange channel and the second heat exchange channel are connected to the confluence cavity and are connected to the bottom cavity through the confluence cavity.

12. The battery pack according to claim 11, wherein: The frame includes a first frame portion, a third frame portion and a second frame portion connected between the first frame portion and the third frame portion, the liquid inlet and the liquid outlet are respectively arranged in the second frame portion, and the liquid inlet cavity, the liquid outlet cavity and the confluence cavity are located in the second frame portion; The first heat exchange channel is located between the first frame and one row of the batteries, and the second heat exchange channel is located between the second frame and another row of the batteries.

13. The battery pack according to claim 11, wherein: The battery pack further includes a plurality of flow dividers, which are spaced apart in the bottom cavity in the second direction, and the flow dividers are connected between the first bottom plate and the second bottom plate to divide the bottom cavity and form a plurality of sub-flow channels; The diverter has a first end and a second end in the third direction, the frame is provided with a first opening connecting the confluence chamber and the bottom chamber, and a second opening connecting the liquid outlet chamber and the bottom chamber, at least part of the first end of the diverter is connected to the frame and separated between the first opening and the second opening, and at least part of the second end of the diverter has a gap with the frame to connect the adjacent sub-channels.

14. The battery pack according to claim 11, wherein: The battery pack also includes a partition and a control module arranged in the accommodating cavity. The partition extends in the second direction and connects the first bottom plate and the frame to separate the accommodating cavity and form a third space. The third space is separated from the first space. The control module is arranged in the third space and is electrically connected to the battery.

15. An electrical device comprising the battery pack according to any one of claims 1 to 14.

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