Battery pack and electric equipment

Abstract

The invention relates to the technical field of new energy batteries, and discloses a battery pack and electrical equipment, the battery pack has a first direction, a second direction and a third direction, the battery pack comprises: a box body having an accommodating cavity; the battery cell is assembled in the accommodating cavity; the slave control component is assembled in the accommodating cavity; the information acquisition assembly comprises a main body plate and a connector; the slave control part comprises a shell, an integrated board, a fixing part and an upper cover, an assembly cavity is defined by the shell and the upper cover, and the assembly cavity is divided into a first cavity and a second cavity by the fixing part; the integrated board comprises a slave control board and a plug connector, the slave control board is assembled in the first cavity, and the plug connector is arranged in the second cavity; the upper cover is provided with a notch, the notch is communicated with the second cavity, the main body plate penetrates through the notch, and the connector is connected with the plug connector in an inserted mode. The slave control board and the plug connector are separately arranged, so that foreign matters cannot enter the first cavity; the second cavity is only provided with a notch communicated with the outside, so that foreign matters are prevented from invading the second cavity, and signal transmission and safety of the battery pack are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy batteries, and in particular to a battery pack and electrical equipment. Background Art

[0002] BMS (Battery Management System) is an important part of the battery pack. It is mainly responsible for the intelligent management and maintenance of each battery unit, preventing the battery from overcharging and over-discharging, extending the battery life, and monitoring the battery status.

[0003] BMS includes slave control components and information collection components. The slave control components mainly include a housing, an integrated board, and a plug-in component set on the integrated board. The information collection component is used to detect the temperature and voltage of the battery. The connector of the information collection component is connected to the plug-in component on the integrated board to achieve signal transmission. After the traditional connector is connected to the plug-in component, foreign matter will invade the connection between the plug-in component and the connector during the use of the battery pack, causing the electrical connection to fail or even short-circuit, affecting the transmission of the signal. Summary of the invention

[0004] The purpose of the present invention is to provide a battery pack to solve the problem in the prior art that foreign matter intrudes into the connection between the connector of the information acquisition component of the BMS and the plug-in component of the slave control component and affects signal transmission; the present invention also provides an electrical device using the battery pack.

[0005] In order to achieve the above object, the present invention provides a battery pack, wherein the battery pack has a first direction, a second direction and a third direction intersecting each other, and comprises:

[0006] A box body, wherein the box body has a containing cavity;

[0007] A battery cell, wherein the battery cell is disposed in the accommodating cavity;

[0008] A slave control component, the slave control component is arranged in the accommodating cavity;

[0009] An information collection component, the information collection component is arranged in the accommodating cavity, the information collection component comprises a main body plate and a connector, the main body plate connects the battery cell and the connector;

[0010] The slave control component comprises a shell, an integrated board, a fixing member and an upper cover, wherein the shell and the upper cover together form an assembly cavity, the fixing member is arranged in the assembly cavity, and the fixing member divides the assembly cavity into a first cavity and a second cavity along the first direction, and the fixing member is provided with an avoidance opening, and the avoidance opening passes through the fixing member along the first direction;

[0011] The integrated board includes a slave control board and a connector integrated with the slave control board, the slave control board is arranged in the first chamber, and the connector is passed through the avoidance along the first direction and is at least partially placed in the second chamber;

[0012] A notch is provided on one side of the upper cover close to the battery core, the notch is communicated with the second chamber, the main body plate is passed through the notch, the connector is provided in the second chamber, and the connector is plugged into the connector.

[0013] Preferably, the upper cover includes a cover plate, a surrounding plate, a first side plate and a partition plate, the surrounding plate is fixedly connected to the cover plate, the surrounding plate is fixedly connected to the shell, the notch penetrates the surrounding plate along the second direction, the first side plate is arranged on the side of the cover plate facing the second chamber, the partition plate extends along the second direction and is connected to the first side plate, a plurality of partition plates are arranged at intervals along the third direction, a plurality of avoidance openings are arranged at intervals along the third direction, along the first direction, the orthographic projection of the partition plate on the fixing member is located between two adjacent avoidance openings, and the first side plate and the partition plate are respectively connected to the fixing member at one end away from the cover plate.

[0014] Preferably, the upper cover also includes a second side plate, which is arranged on the side of the cover plate along the first direction facing the second chamber, and the partition is connected between the first side plate and the second side plate. Along the second direction, the second side plate is located on the side of the first side plate close to the battery cell, and in the first direction, the size of the second side plate is smaller than the size of the first side plate.

[0015] Preferably, the upper cover also includes an ear plate connected to the cover plate, and a plurality of the ear plates are arranged at intervals along the third direction; the slave control component also includes bosses corresponding to the ear plates one by one, and the bosses are fixedly arranged on a side of the shell away from the second chamber, and the ear plate is snap-fitted and connected to the bosses.

[0016] Preferably, the battery pack also includes a first seal and a second seal, and mutually connected sealing grooves are provided between the first side plate and the enclosure plate, and between the second side plate and the enclosure plate, the first seal and the second seal are stacked in the sealing grooves, and the main body plate is passed between the first seal and the second seal.

[0017] Preferably, the battery pack further includes a top cover, which covers the accommodating cavity; the battery pack further includes a buffer, which is connected between the upper cover and the top cover along the first direction.

[0018] Preferably, the shell includes a main body and a first convex portion and a second convex portion connected to the main body, the upper cover and the main body form the assembly cavity, the fixing member is fixedly connected to the main body, the first convex portion and the second convex portion are both arranged in the first cavity, the first convex portion and the second convex portion are spaced apart along the second direction, the slave control board is clamped between the first convex portion and the second convex portion, and the fixing member and the slave control board are press-fitted along the first direction.

[0019] Preferably, a slot is further provided on a side of the fixing member facing the first chamber, the slot extends along the first direction, and at least a portion of the slave control board is embedded in the slot.

[0020] Preferably, a buckle groove is provided on one side of the shell body facing the assembly cavity along the second direction, and a buckle claw is provided on one side of the fixing member facing the shell body along the second direction, and the buckle claw is buckled and connected with the buckle groove.

[0021] The present invention also provides an electrical device, comprising the battery pack described in any of the above technical solutions.

[0022] Compared with the prior art, a battery pack and an electrical device according to an embodiment of the present invention have the following beneficial effects: the shell and the upper cover of the slave control component form an assembly cavity, the fixing part divides the assembly cavity into a relatively independent first cavity and a second cavity, the slave control board of the integrated board is located in the first cavity, the connector is located in the second cavity, the slave control board and the connector are arranged separately, the connector and the connector are plugged in the second cavity, foreign matter will not pass through the fixing part and enter the first cavity, and the slave control board is prevented from being invaded by foreign matter; at the same time, a notch is provided on the upper cover for the main board of the information acquisition component to pass through, that is, the second cavity is connected to the outside world only through the notch, so that the connector and the connector are prevented from being exposed in the accommodating cavity of the battery pack, and the invasion of foreign matter of the battery pack into the connection position of the connector and the connector in the second cavity is reduced, thereby ensuring signal transmission and the safety of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a battery pack of the present invention;

[0024] Figure 2 yes Figure 1 An assembly diagram of a slave control component and an information collection component of a battery pack;

[0025] Figure 3 yes Figure 2 An exploded schematic diagram of a slave control component;

[0026] Figure 4 yes Figure 3 An exploded schematic diagram from another perspective of the control component;

[0027] Figure 5 yes Figure 2 A cross-sectional view of a slave control component;

[0028] Figure 6 yes Figure 5 A front view of a sectioned slave control component;

[0029] Figure 7 yes Figure 3 A schematic diagram of the structure of the fixing part of the slave control component;

[0030] Figure 8 yes Figure 3 A schematic diagram of the structure of the upper cover of the slave control component;

[0031] Fig. 9 yes Figure 8 A schematic structural diagram of the upper cover from another perspective.

[0032] In the figure, 1, box body, 11, accommodating cavity, 12, frame, 13, top cover, 2, slave control component, 3, shell, 31, assembly cavity, 311, first cavity, 312, second cavity, 32, locking platform, 33, second convex part, 34, buckle groove, 35, first convex part, 36, body, 37, boss, 4, integrated board, 41, slave control board, 42, connector, 5, fixing part, 51, buckle claw, 52, card slot , 53. avoidance, 6. upper cover, 61. notch, 62. cover plate, 621. first side plate, 622. partition, 623. second side plate, 63. ear plate, 64. enclosure, 65. sealing groove, 7. information collection component, 71. main plate, 72. connector, 8. first sealing member, 81. second sealing member, 9. buffer member, 10. battery cell, Z, first direction, Y, second direction, X, third direction. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described in detail below 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.

[0034] A preferred embodiment of a battery pack of the present invention is as follows Figures 1 to 9 As shown, the battery pack has a first direction Z, a second direction Y and a third direction X that intersect each other. In this embodiment, the first direction Z is the height direction of the battery pack, the second direction Y is the length direction of the battery pack, and the third direction X is the height direction of the battery pack.

[0035] The battery pack includes a box body 1, a battery cell 10, a slave control component 2 and an information collection component 7. The box body 1 has a receiving cavity 11, and the battery cell 10, the slave control component 2 and the information collection component 7 are all arranged in the receiving cavity 11. The information collection component 7 includes a main board 71 and a connector 72. The main board 71 is connected between the battery cell 10 and the connector 72 to collect the temperature and voltage signals of the battery cell 10 and transmit them to the slave control component 2.

[0036] The slave control component 2 includes a housing 3, an integrated board 4, a fixing member 5 and an upper cover 6. The housing 3 and the upper cover 6 together form an assembly cavity 31. The integrated board 4 and the fixing member 5 are both assembled in the assembly cavity 31. The top of the housing 3 along the first direction Z is an open structure, and the upper cover 6 covers the cavity opening of the assembly cavity 31. The upper cover 6 can protect the integrated board 4 in the housing 3 from being disturbed by foreign objects or being ineffective due to human touch, thereby ensuring signal transmission.

[0037] In this embodiment, the box 1 also includes a frame 12, and a locking platform 32 is integrally formed on the shell 3. The locking platform 32 is located on the side of the shell 3 away from the battery cell 10. A plurality of locking platforms 32 are arranged at intervals along the third direction X. Screws can be inserted into the locking platform 32, and the shell 3 is fixedly connected to the frame 12 of the box 1 through the locking platform 32. The locking platform 32 is perpendicular to the shell 3, so that the shell 3 is arranged in an upright shape in the box 1, and the thickness space of the shell 3 can be fully utilized for fixing. It can greatly accommodate the limitations in the length and width directions, which is beneficial to the arrangement of the slave control component 2 in the battery pack, occupies less plane space, and can improve the volume utilization of the entire package. In other embodiments, the shell 3 and the frame 12 of the box 1 can also be connected by a mortise and tenon structure.

[0038] The fixing member 5 and the upper cover 6 are arranged at intervals along the first direction Z. The fixing member 5 divides the assembly cavity 31 into a first cavity 311 and a second cavity 312 along the first direction Z. The first cavity 311 is located on the side of the fixing member 5 away from the upper cover 6, and the second cavity 312 is located on the side of the fixing member 5 close to the upper cover 6. The fixing member 5 is also provided with an escape opening 53, which passes through the fixing member 5 along the first direction Z.

[0039] The integrated board 4 includes a slave control board 41 and a connector 42 integrated in the slave control board 41. The connector 42 is used to be electrically connected to the connector 72 of the information acquisition component 7, so that the slave control board 41 processes the battery voltage, temperature and other information collected by the main board 71. The slave control board 41 is assembled in the first chamber 311, and the connector 42 is arranged in the avoidance opening 53 along the first direction Z and is at least partially placed in the second chamber 312. The connector 42 passes through the avoidance opening 53, and the fixing member 5 can be used to protect the slave control board 41 located in the first chamber 311, so as to avoid the risk of impurities entering the first chamber 311 and contacting with the slave control board 41 to cause a short circuit.

[0040] A notch 61 is provided on one side of the upper cover 6 close to the battery cell 10, and the notch 61 is connected to the second chamber 312. The main plate 71 is inserted through the notch 61, and the connector 72 is arranged in the second chamber 312, and the connector 72 is plugged into the plug-in connector 42. The notch 61 allows the information collection component 7 to pass through, ensuring that the information collection component 7 is electrically connected to the integrated board 4 located in the assembly chamber 31. At the same time, the second chamber 312 is also connected to the accommodating chamber 11 of the box body 1 only through the notch 61, reducing the debris in the accommodating chamber 11 from entering the second chamber 312 and invading the connection position between the connector 72 and the plug-in connector 42.

[0041] The shell 4 and the upper cover 6 of the slave control component 2 of the battery pack form an assembly cavity 31, and the fixing part 5 divides the assembly cavity 31 into a relatively independent first cavity 311 and a second cavity 312. The slave control board 41 of the integrated board 4 is located in the first cavity 311, and the plug-in component 42 is located in the second cavity 312. The slave control board 41 and the plug-in component 42 are arranged separately, and the connector 72 and the plug-in component 42 are plugged in the second cavity 312. Foreign objects will not pass through the fixing part 5 and enter the first cavity 311, thereby preventing the slave control board 41 from being invaded by foreign objects; at the same time, a notch 61 is provided on the upper cover 6 for the main board 71 of the information acquisition component 7 to pass through, that is, only the notch 61 of the second cavity 312 is connected to the outside world, thereby preventing the connector 72 and the plug-in component 42 from being exposed in the accommodating cavity 11 of the battery pack, reducing the invasion of foreign objects into the connection position of the connector 72 and the plug-in component 42 in the second cavity 312, and ensuring the safety of signal transmission and the battery pack.

[0042] In some embodiments, the upper cover 6 includes a cover plate 62, a surrounding plate 64, a first side plate 621 and a partition plate 622. The surrounding plate 64 is fixedly connected to the cover plate 62, and the surrounding plate 64 is fixedly connected to the shell 3. The notch 61 penetrates the surrounding plate 64 along the second direction Y. The first side plate 621 is arranged on the side of the cover plate 62 facing the second chamber 312. The partition plate 622 extends along the second direction Y and is connected to the first side plate 621. A plurality of partition plates 622 are arranged at intervals along the third direction X. A plurality of avoidance openings 53 are arranged at intervals along the third direction X. Along the first direction Z, the orthographic projection of the partition plate 622 on the fixing member 5 is located between two adjacent avoidance openings 53. The ends of the first side plate 621 and the partition plate 622 away from the cover plate 62 are respectively connected to the fixing member 5.

[0043] The avoidance openings 53 correspond one-to-one to the connectors 42 of the integrated board 4. Along the first direction Z, the positive projection of the partition 622 on the fixing member 5 is located between two adjacent avoidance openings 53. Therefore, when the upper cover 6 is connected to the shell 3, the first side plate 621 and the end of the partition 622 away from the cover plate 62 are respectively connected to the fixing member 5. The partition 622 separates each avoidance opening 53 and the connector 42 located in the avoidance opening 53. Each partition 622 and the first side plate 621 and the second side plate 623 enclose a relatively independent space. Even if some foreign matter enters between the upper cover 6 and the fixing member 5 at a later stage, it will be confined in each independent space, reducing its intrusion on the connector 42 and the connector 72.

[0044] In addition, after the ends of the first side plate 621 and the partition plate 622 away from the cover plate 62 are respectively connected to the fixing member 5, the fixing member 5 can be pressed along the first direction Z so that the fixing member 5 is not shaken in the upper limit position in the third direction Z.

[0045] In some embodiments, the upper cover 6 also includes a second side plate 623, which is disposed on the side of the cover plate 62 along the first direction Z toward the second chamber 312, and the partition 622 is connected between the first side plate 621 and the second side plate 623. Along the second direction Y, the second side plate 623 is located on the side of the first side plate 621 close to the battery cell 10, and in the first direction Z, the size of the second side plate 623 is smaller than the size of the first side plate 621.

[0046] A first side plate 621 and a second side plate 623 are provided on one side of the cover plate 62 close to the fixing member 5. The first side plate 621 and the second side plate 623 are located at the edge of the cover plate 62. After the upper cover 6 is connected to the shell 3, the first side plate 621 and the second side plate 623 will be located in the second chamber 312, thereby increasing the sealing between the cover plate 62 and the shell 3 and reducing the entry of foreign matter into the second chamber 312 through the gap 61.

[0047] In the first direction Z, the size of the second side plate 623 is smaller than that of the first side plate 621 , and the second side plate 623 can avoid the gap 61 , ensuring that the main plate 71 of the information acquisition component 7 passes through the gap 61 without interfering with the second side plate 623 .

[0048] In some embodiments, the upper cover 6 also includes an ear plate 63 connected to the enclosure 64, and multiple ear plates 63 are arranged at intervals along the third direction X; the control component 2 also includes a boss 37 corresponding to the ear plate 63 one by one, and the boss 37 is fixedly arranged on the side of the shell 3 away from the second chamber 312, and the ear plate 63 is snap-fitted and connected to the boss 37.

[0049] The ear plate 63 provided on the enclosure 64 is snap-fitted with the boss 37 on the shell 3 . The snap-fitting connection simplifies the connection between the upper cover 6 and the shell 3 , omits the screw connection, and improves the assembly efficiency of the upper cover 6 and the shell 3 .

[0050] In some embodiments, the battery pack also includes a first seal 8 and a second seal 81. Interconnected sealing grooves 65 are provided between the first side plate 621 and the enclosure 64 and between the second side plate 623 and the enclosure 64. The first seal 8 and the second seal 81 are stacked in the sealing grooves 65, and the main body plate 71 is passed between the first seal 8 and the second seal 81.

[0051] A sealing groove 65 is provided between the first side plate 621 and the enclosure 64, and between the second side plate 623 and the enclosure 64 to install the first seal 8 and the second seal 81. The first seal 8 and the second seal 81 can ensure that the upper cover 6 and the housing 3 are basically sealed, and prevent external impurities from entering the upper cover 6, affecting the internal electrical connection and causing a short circuit. The information acquisition component 7 is arranged between the first seal 8 and the second seal 81, and the first seal 8 and the second seal 81 can be used to seal the gap between the information acquisition component 7 and the housing 3 and the upper cover 6 to ensure sealing. In this embodiment, the seal 8 is a sealing foam, which also has a shock-absorbing effect, forming a protection for the information acquisition component 7.

[0052] In some embodiments, the battery pack further includes a top cover 13 , which covers the accommodating cavity 11 ; the battery pack further includes a buffer member 9 , which is connected between the upper cover 6 and the top cover 13 along the first direction Z.

[0053] A buffer member 9 is provided between the top cover 13 and the upper cover 6 , and the buffer member 9 can reduce the collision between the top cover 13 and the upper cover 6 , and also can prevent the upper cover 6 from being damaged when the top cover 13 collapses.

[0054] In some embodiments, the shell 3 includes a main body 36 and a first protrusion 35 and a second protrusion 33 connected to the main body 36. The upper cover 6 and the main body 36 form an assembly cavity 31. The fixing member 5 is fixedly connected to the main body 36. The first protrusion 35 and the second protrusion 33 are both arranged in the first cavity 311. The first protrusion 35 and the second protrusion 33 are spaced apart along the second direction Y. The slave control board 41 is clamped between the first protrusion 35 and the second protrusion 33. The fixing member 5 and the slave control board 41 are press-fitted along the first direction Z.

[0055] The housing 3 is provided with a first convex portion 35 and a second convex portion 33 in the first chamber 311, and the slave control board 41 is clamped between the first convex portion 35 and the second convex portion 33, and the first convex portion 35 and the second convex portion 33 clamp and fix the slave control board 41 along the second direction Y. The size of the first chamber 311 in the first direction X is adapted to the slave control board 41, so that the inner wall of the body 36 limits the position of the slave control board 41 along the first direction X, and the body 36, the first convex portion 35 and the second convex portion 33 cooperate with each other to limit the position of the slave control board 41 in the second direction Y and the third direction X.

[0056] The first convex portion 35 and the second convex portion 33 are used to limit the slave control board 41, which simplifies the limiting structure and ensures the overall strength of the housing 3. In this embodiment, there are two sets of the first convex portion 35 and the second convex portion 33, and they are located at both ends of the first chamber 311 along the third direction X to limit the two ends of the slave control board 41 and ensure that the slave control board 41 is stable in the first chamber 311.

[0057] The fixing member 5 is press-fitted with the slave control plate 41 along the first direction Z. The fixing member 5 can press-fit the slave control plate 41 between the first protrusion 35 and the second protrusion 33 along the first direction Z to limit the slave control plate 41 in the first direction Z and prevent the slave control plate 41 from moving along the first direction Z in the first chamber 311.

[0058] By cooperating among the first protrusion 35, the second protrusion 33 and the fixing member 5, the slave control board 41 is effectively fixed in all directions in the first chamber 311, and the slave control board 41 will not loosen or fall off in the first chamber 311. Connecting structures such as screws are omitted, and short circuits caused by contact between the screws and the circuits on the slave control board 41 after the screws fall off are avoided, thereby improving the assembly efficiency and electrical safety of the slave control board 41.

[0059] In some embodiments, a slot 52 is further provided on a side of the fixing member 5 facing the first chamber 311 . The slot 52 extends along the first direction Z, and at least a portion of the control board 41 is embedded in the slot 52 .

[0060] The slave control board 41 is embedded in the card slot 52 extending in the first direction Z. After the slot wall of the card slot 52 contacts the slave control board 41, it will press against the slave control board 41 to limit the slave control board 41 in the second direction Y. At the same time, the slot bottom of the card slot 52 presses the slave control board 41 along the first direction Z to fix the slave control board 41 in the first direction Z. The card slot 52 cooperates with the first protrusion 35 and the second protrusion 33 to prevent the slave control board 41 from moving in the assembly cavity 31.

[0061] In some embodiments, a buckle groove 34 is provided on one side of the shell 3 along the second direction Y toward the assembly cavity 31 , and a buckle claw 51 is provided on one side of the fixing member 5 along the second direction Y toward the shell, and the buckle claw 51 is buckled and connected with the buckle groove 34 .

[0062] The fixing member 5 is buckled with the housing 3 through the buckle groove 34 and the buckle claw 51, so that the fixing member 5 and the housing 3 are stoppered along the first direction Z to prevent the fixing member 5 from moving in the first direction Z. The buckle connection simplifies the assembly method of the fixing member 5, speeds up the assembly efficiency of the fixing member 5 during assembly, omits structures such as screws, and improves electrical safety.

[0063] The present invention further provides a preferred embodiment of an electrical device, comprising a battery pack. The specific structure of the battery pack is the same as the specific structure of the battery pack in any of the above embodiments, and will not be repeated here.

[0064] In summary, the embodiments of the present invention provide a battery pack and an electrical device, wherein the shell and the upper cover of the slave control component form an assembly cavity, the fixing part divides the assembly cavity into a relatively independent first cavity and a second cavity, the slave control board of the integrated board is located in the first cavity, the connector is located in the second cavity, the slave control board and the connector are arranged separately, the connector and the connector are plugged in the second cavity, foreign matter will not pass through the fixing part and enter the first cavity, thereby preventing the slave control board from being invaded by foreign matter; at the same time, a notch is provided on the upper cover for the main board of the information acquisition component to pass through, that is, the second cavity is connected to the outside world only through the notch, thereby preventing the connector and the connector from being exposed in the accommodating cavity of the battery pack, reducing the invasion of foreign matter of the battery pack into the connection position of the connector and the connector in the second cavity, thereby ensuring signal transmission and the safety of the battery pack.

[0065] 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 principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A battery pack, the battery pack having a first direction, a second direction and a third direction intersecting each other, characterized in that: The battery pack comprises: A box body, wherein the box body has a containing cavity; A battery cell, wherein the battery cell is disposed in the accommodating cavity; A slave control component, the slave control component is arranged in the accommodating cavity; An information collection component, the information collection component is arranged in the accommodating cavity, the information collection component comprises a main body plate and a connector, the main body plate connects the battery cell and the connector; The slave control component comprises a shell, an integrated board, a fixing member and an upper cover, wherein the shell and the upper cover together form an assembly cavity, the fixing member is arranged in the assembly cavity, and the fixing member divides the assembly cavity into a first cavity and a second cavity along the first direction, and the fixing member is provided with an avoidance opening, and the avoidance opening passes through the fixing member along the first direction; The integrated board includes a slave control board and a connector integrated with the slave control board, the slave control board is arranged in the first chamber, and the connector is passed through the avoidance along the first direction and is at least partially placed in the second chamber; A notch is provided on one side of the upper cover close to the battery core, the notch is communicated with the second chamber, the main body plate is passed through the notch, the connector is provided in the second chamber, and the connector is plugged into the connector.

2. The battery pack according to claim 1, characterized in that: The upper cover includes a cover plate, a surrounding plate, a first side plate and a partition plate, the surrounding plate is fixedly connected to the cover plate, the surrounding plate is fixedly connected to the shell, the notch penetrates the surrounding plate along the second direction, the first side plate is arranged on the side of the cover plate facing the second chamber, the partition plate extends along the second direction and is connected to the first side plate, a plurality of the partition plates are arranged at intervals along the third direction, a plurality of the avoidance openings are arranged at intervals along the third direction, along the first direction, the orthographic projection of the partition plate on the fixing member is located between two adjacent avoidance openings, and the first side plate and the partition plate are respectively connected to the fixing member at one end away from the cover plate.

3. The battery pack according to claim 2, characterized in that: The upper cover also includes a second side plate, which is arranged on a side of the cover plate facing the second chamber along the first direction, and the partition is connected between the first side plate and the second side plate. Along the second direction, the second side plate is located on a side of the first side plate close to the battery cell, and in the first direction, the size of the second side plate is smaller than the size of the first side plate.

4. The battery pack according to claim 2, characterized in that: The upper cover also includes an ear plate connected to the cover plate, and a plurality of the ear plates are arranged at intervals along the third direction; the slave control component also includes bosses corresponding to the ear plates one by one, and the bosses are fixedly arranged on a side of the shell away from the second chamber, and the ear plate is snap-fitted and connected to the bosses.

5. The battery pack according to claim 3, characterized in that: The battery pack also includes a first seal and a second seal. Sealing grooves that are interconnected are provided between the first side plate and the enclosure plate, and between the second side plate and the enclosure plate. The first seal and the second seal are stacked in the sealing grooves, and the main body plate is inserted between the first seal and the second seal.

6. The battery pack according to any one of claims 1 to 5, characterized in that: The battery pack further includes a top cover, which covers the accommodating cavity; the battery pack further includes a buffer, which is connected between the upper cover and the top cover along the first direction.

7. The battery pack according to any one of claims 1 to 5, characterized in that: The shell includes a main body and a first convex portion and a second convex portion connected to the main body, the upper cover and the main body form the assembly cavity, the fixing member is fixedly connected to the main body, the first convex portion and the second convex portion are both arranged in the first cavity, the first convex portion and the second convex portion are spaced apart along the second direction, the slave control board is clamped between the first convex portion and the second convex portion, and the fixing member is press-fitted with the slave control board along the first direction.

8. The battery pack according to claim 7, characterized in that: A slot is further provided on a side of the fixing member facing the first chamber. The slot extends along the first direction, and at least a portion of the slave control board is embedded in the slot.

9. The battery pack according to any one of claims 1 to 5, characterized in that: A buckle groove is provided on one side of the shell body facing the assembly cavity along the second direction, and a buckle claw is provided on one side of the fixing member facing the shell body in the second direction, and the buckle claw is buckled and connected with the buckle groove.

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

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