Battery pack and electric equipment

Abstract

The utility model relates to the technical field of new energy batteries, and discloses a battery pack and electric 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 utility model relates to new energy battery technical field especially, and it is a kind of battery pack and electrical equipment. BACKGROUND

[0002] BMS (battery management system) is the important board of battery pack, mainly undertakes the task of intelligent management and maintenance each battery unit, prevents battery and overdischarge, prolongs the service life of battery, and monitors the state of battery.

[0003] BMS includes slave control component and information acquisition assembly, slave control component mainly includes shell, integrated board and the plug-in piece being arranged on integrated board, information acquisition assembly is used to detect the temperature and voltage of battery, the connector of information acquisition assembly is connected with the plug-in piece of integrated board after plug-in connection and realizes signal transmission.The connector of traditional plug-in piece is connected, in the process of using battery pack, foreign matter can invade the connecting place of plug-in piece and connector, causes electric connection failure even short circuit, affects the transmission of signal. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of battery pack to solve the problem that the connector of information acquisition assembly of BMS in prior art and the plug-in piece of slave control component are invaded by foreign matter at connecting place, affect signal transmission;The utility model also provides a kind of electrical equipment using the battery pack.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a kind of battery pack, the battery pack has first direction, second direction and third direction that intersect each other, comprising:

[0006] Box, the box has accommodating cavity;

[0007] Electric core, the electric core is located in the accommodating cavity;

[0008] Slave control component, the slave control component is located in the accommodating cavity;

[0009] Information acquisition assembly, the information acquisition assembly is located in the accommodating cavity, the information acquisition assembly includes main body board and connector, the main body board is connected with the electric core and the connector;

[0010] The slave control component includes shell, integrated board, fixing piece and upper cover, the shell and the upper cover jointly enclose assembly cavity, the fixing piece is located in the assembly cavity, the fixing piece divides the assembly cavity into first chamber and second chamber along the first direction, the fixing piece is provided with avoiding mouth, the avoiding mouth penetrates the fixing piece along the first direction;

[0011] The integrated plate comprises a slave plate and a connector integrated in the slave plate, the slave plate is arranged in the first chamber, and the connector is arranged in the avoiding opening and at least partially arranged in the second chamber along the first direction;

[0012] The upper cover is provided with a notch near one side of the battery cell, the notch is communicated with the second chamber, the main plate is arranged in the notch, the connector is arranged in the second chamber, and the connector is connected with the connector.

[0013] Preferably, the upper cover comprises a cover plate, a surrounding plate, a first side plate and a partition plate, the surrounding plate is fixedly connected with the cover plate, the surrounding plate is fixedly connected with the shell, the notch penetrates through the surrounding plate along the second direction, the first side plate is arranged on one side of the cover plate facing the second chamber, the partition plate extends along the second direction and is connected with the first side plate, a plurality of partition plates are arranged along the third direction, a plurality of avoiding openings are arranged along the third direction, along the first direction, the orthogonal projection of the partition plate on the fixing piece is located between the adjacent two avoiding openings, and the first side plate and the partition plate away from the cover plate are connected with the fixing piece respectively.

[0014] Preferably, the upper cover further comprises a second side plate, the second side plate is arranged on one side of the cover plate facing the second chamber along the first direction, the partition plate is connected between the first side plate and the second side plate, along the second direction, the second side plate is located on one side of the first side plate close to the battery cell, and along 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 further comprises an ear plate connected with the cover plate, a plurality of ear plates are arranged along the third direction; the slave component further comprises a boss corresponding to the ear plate, the boss is fixedly arranged on one side of the shell away from the second chamber, and the ear plate is connected with the boss in a buckling mode.

[0016] Preferably, the battery pack further comprises a first sealing piece and a second sealing piece, a sealing groove communicated with each other is arranged between the first side plate and the surrounding plate and between the second side plate and the surrounding plate, the first sealing piece and the second sealing piece are arranged in the sealing groove in a stacking mode, and the main plate is arranged between the first sealing piece and the second sealing piece.

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

[0018] Preferably, the shell comprises a body and a first protrusion and a second protrusion connected with the body, the upper cover and the body enclose the assembly cavity, the fixing member is fixedly connected with the body, the first protrusion and the second protrusion are arranged in the first chamber, the first protrusion and the second protrusion are arranged in the second direction, the slave control board is arranged between the first protrusion and the second protrusion, and the fixing member and the slave control board are press-fitted in the first direction.

[0019] Preferably, one side of the fixing member towards the first chamber is further provided with a clamping groove extending in the first direction, and at least part of the slave control board is embedded in the clamping groove.

[0020] Preferably, one side of the shell towards the assembly cavity in the second direction is provided with a buckling groove, and one side of the fixing member towards the shell in the second direction is provided with a buckling claw, and the buckling claw is buckled and connected with the buckling groove.

[0021] The utility model further provides a kind of electric equipment, including the battery pack of any one of the above technical solutions.

[0022] Compared with prior art, the utility model embodiment a kind of battery pack and electric equipment, its beneficial effect lies in: the shell and upper cover of slave control component enclose assembly cavity, fixing member divides assembly cavity into relatively independent first chamber and second chamber, slave control board of integrated board is located in first chamber, and plug-in part is located in second chamber, slave control board and plug-in part are arranged separately, connector and plug-in part are plugged in second chamber, foreign matter cannot pass through fixing member and enter first chamber, avoid slave control board to be invaded by foreign matter;While the main board of information acquisition assembly is penetrated on the upper cover, i.e. only the notch of second chamber is connected with outside, avoid connector, plug-in part is exposed in the accommodating cavity of battery pack, reduce the connection position of connector and plug-in part in second chamber in the foreign matter invasion of battery pack, ensure signal transmission and the safety of battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structural schematic diagram of the battery pack of the utility model;

[0024] Figure 2 It is Figure 1 the assembly schematic diagram of slave control component and information acquisition assembly of the battery pack of

[0025] Figure 3 It is Figure 2 the explosion schematic diagram of slave control component of

[0026] Figure 4 It is Figure 3 the explosion schematic diagram of slave control component of another perspective of

[0027] Figure 5 It isFigure 2 is a sectional view of the slave component;

[0028] Figure 6 is Figure 5 is a front view of the slave component after sectioning;

[0029] Figure 7 is Figure 3 is a structural schematic view of the fixing part of the slave component;

[0030] Figure 8 is Figure 3 is a structural schematic view of the upper cover of the slave component;

[0031] Figure 9 is Figure 8 is a structural schematic view of the upper cover from another angle.

[0032] In the figure, 1, box body, 11, containing cavity, 12, frame, 13, top cover, 2, slave component, 3, shell, 31, assembly cavity, 311, first chamber, 312, second chamber, 32, locking table, 33, second protrusion, 34, buckle groove, 35, first protrusion, 36, body, 37, boss, 4, integrated board, 41, slave board, 42, plug-in part, 5, fixing part, 51, buckle claw, 52, clamping groove, 53, avoiding opening, 6, upper cover, 61, notch, 62, cover plate, 621, first side plate, 622, partition plate, 623, second side plate, 63, ear plate, 64, surrounding plate, 65, sealing groove, 7, information acquisition assembly, 71, main body plate, 72, connector, 8, first sealing part, 81, second sealing part, 9, buffer part, 10, battery cell, Z, first direction, Y, second direction, X, third direction. DETAILED DESCRIPTION

[0033] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0034] A preferred embodiment of the battery pack of the utility model, as shown in Figures 1 to 9 The battery pack has first direction Z, second direction Y and third direction X which intersect with each other, in this embodiment, first direction Z is the height direction of the battery pack, second direction Y is the length direction of the battery pack, and third direction X is the height direction of the battery pack.

[0035] The battery pack comprises a box body 1, a battery cell 10, a slave control component 2 and an information acquisition assembly 7, the box body 1 has a containing cavity 11 inside, and the battery cell 10, the slave control component 2 and the information acquisition assembly 7 are all arranged in the containing cavity 11. The information acquisition assembly 7 comprises a main body plate 71 and a connector 72, the main body plate 71 is connected between the battery cell 10 and the connector 72, so as 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 comprises a shell 3, an integrated plate 4, a fixing piece 5 and an upper cover 6, the shell 3 and the upper cover 6 jointly enclose an assembling cavity 31, the integrated plate 4 and the fixing piece 5 are both assembled in the assembling cavity 31, the top of the shell 3 along a first direction Z is of an open structure, and the upper cover 6 covers the cavity opening of the assembling cavity 31. The upper cover 6 can protect the integrated plate 4 in the shell 3 from being interfered by foreign matters or being touched by people to cause failure, so as to ensure signal transmission.

[0037] In the embodiment, the box body 1 further comprises a frame 12, and the shell 3 is further integrally formed with a locking table 32, the locking table 32 is located on the side of the shell 3 away from the battery cell 10, a plurality of locking tables 32 are arranged along a third direction X at intervals, the locking tables 32 can pass through screws, and the shell 3 is fixedly connected with the frame 12 of the box body 1 through the locking tables 32. The locking tables 32 are perpendicular to the shell 3, so that the shell 3 is arranged in a vertical manner in the box body 1, the thickness space of the shell 3 can be fully utilized for fixation, the length and width directions can be greatly compatible, the slave control component 2 is beneficial to arrangement in the battery pack, occupies less planar space, and the volume utilization rate of the whole battery pack can be improved. In other embodiments, the shell 3 and the frame 12 of the box body 1 can also be connected through a mortise and tenon structure.

[0038] The fixing piece 5 and the upper cover 6 are arranged at intervals along the first direction Z, the fixing piece 5 divides the assembling 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 piece 5 away from the upper cover 6, and the second cavity 312 is located on the side of the fixing piece 5 close to the upper cover 6. The fixing piece 5 is further provided with an avoiding opening 53, and the avoiding opening 53 penetrates through the fixing piece 5 along the first direction Z.

[0039] The integrated plate 4 comprises a slave control plate 41 and a plug-in piece 42 integrated with the slave control plate 41, the plug-in piece 42 is used for electrical connection with the connector 72 of the information acquisition assembly 7, so that the slave control plate 41 processes the battery voltage, temperature and other information collected by the main body plate 71. The slave control plate 41 is assembled in the first cavity 311, the plug-in piece 42 is arranged in the avoiding opening 53 along the first direction Z and at least partially arranged in the second cavity 312, and the plug-in piece 42 passes through the avoiding opening 53. The slave control plate 41 located in the first cavity 311 can be protected by the fixing piece 5, so as to avoid the risk of short circuit caused by impurities entering the first cavity 311 and contacting the slave control plate 41.

[0040] The upper cover 6 is provided with a notch 61 close to the side of the battery cell 10, and the notch 61 is communicated with the second cavity 312. The main plate 71 is arranged in the notch 61, and the connector 72 is arranged in the second cavity 312 and is plugged with the plug-in part 42. The notch 61 can be used for the information acquisition assembly 7 to pass through, so as to ensure that the information acquisition assembly 7 is electrically connected with the integrated plate 4 located in the assembly cavity 31. At the same time, the second cavity 312 is also communicated with the containing cavity 11 of the box body 1 only through the notch 61, so as to reduce the foreign matters in the containing cavity 11 from entering the second cavity 312 and invading the connection position of the connector 72 and the plug-in part 42.

[0041] The shell 4 and the upper cover 6 of the slave component 2 of the battery pack enclose the assembly cavity 31. The fixing part 5 divides the assembly cavity 31 into the relatively independent first cavity 311 and the second cavity 312. The slave plate 41 of the integrated plate 4 is located in the first cavity 311, and the plug-in part 42 is located in the second cavity 312. The slave plate 41 and the plug-in part 42 are arranged separately. The connector 72 and the plug-in part 42 are plugged in the second cavity 312. Foreign matters cannot pass through the fixing part 5 and enter the first cavity 311, so as to avoid the slave plate 41 from being invaded by the foreign matters. At the same time, the upper cover 6 is provided with the notch 61 for the main plate 71 of the information acquisition assembly 7 to pass through, that is, the second cavity 312 is only communicated with the outside through the notch 61. The connector 72 and the plug-in part 42 are avoided from being exposed in the containing cavity 11 of the battery pack. The connection position of the connector 72 and the plug-in part 42 in the second cavity 312 is reduced from being invaded by the foreign matters, so as to ensure the signal transmission and the safety of the battery pack.

[0042] In some embodiments, the upper cover 6 includes a cover plate 62, an enclosing plate 64, a first side plate 621 and a partition plate 622. The enclosing plate 64 is fixedly connected with the cover plate 62 and is fixedly connected with the shell 3. The notch 61 penetrates the enclosing 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 cavity 312. The partition plate 622 extends along the second direction Y and is connected with the first side plate 621. The partition plate 622 is arranged at intervals along the third direction X. The avoiding openings 53 are arranged at intervals along the third direction X. Along the first direction Z, the orthogonal projection of the partition plate 622 on the fixing part 5 is located between the adjacent two avoiding openings 53. The ends of the first side plate 621 and the partition plate 622 away from the cover plate 62 are connected with the fixing part 5 respectively.

[0043] The avoidance opening 53 corresponds to the plug 42 of the integrated plate 4, and the normal projection of the partition plate 622 on the fixing part 5 is located between the two adjacent avoidance openings 53 in the first direction Z. Therefore, when the upper cover 6 is connected with the shell 3, the first side plate 621 and the partition plate 622, away from the cover plate 62, are connected with the fixing part 5 respectively. The partition plate 622 separates each avoidance opening 53 and the plug 42 in the avoidance opening 53. Each partition plate 622, together with the first side plate 621 and the second side plate 623, encloses a relatively independent space. Even if some foreign matters enter between the upper cover 6 and the fixing part 5 later, they will be limited in each independent space, reducing the interference with the plug 42 and the connector 72.

[0044] In addition, after the first side plate 621 and the partition plate 622, away from the cover plate 62, are connected with the fixing part 5 respectively, the fixing part 5 can be pressed in the first direction Z, so that the fixing part 5 is limited and cannot shake in the third direction Z.

[0045] In some embodiments, the upper cover 6 further includes a second side plate 623. The second side plate 623 is arranged on the side of the cover plate 62 facing the second cavity 312 in the first direction Z. The partition plate 622 is connected between the first side plate 621 and the second side plate 623. In 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. 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] The side of the cover plate 62 close to the fixing part 5 is provided with the first side plate 621 and the second side plate 623. 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 with the shell 3, the first side plate 621 and the second side plate 623 are located in the second cavity 312, which increases the sealing performance between the cover plate 62 and the shell 3, and reduces the entry of foreign matters into the second cavity 312 through the gap 61.

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

[0048] In some embodiments, the upper cover 6 further includes an ear plate 63 connected with the surrounding plate 64. The ear plate 63 is spaced apart in the third direction X. The control component 2 further includes a boss 37 corresponding to the ear plate 63. The boss 37 is fixedly arranged on the side of the shell 3 away from the second cavity 312. The ear plate 63 is connected with the boss 37 in a clamping manner.

[0049] The ear plate 63 on the surrounding plate 64 is connected with the boss 37 on the shell 3 in a clamping manner. The clamping connection simplifies the connection form 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 further comprises a first seal 8 and a second seal 81, and a sealing groove 65 is arranged between the first side plate 621 and the surrounding plate 64 and between the second side plate 623 and the surrounding plate 64, and the first seal 8 and the second seal 81 are arranged in the sealing groove 65 in a stacked manner, and the main body plate 71 is arranged between the first seal 8 and the second seal 81.

[0051] The sealing groove 65 is arranged between the first side plate 621 and the surrounding plate 64 and between the second side plate 623 and the surrounding plate 64 to mount the first seal 8 and the second seal 81, and the first seal 8 and the second seal 81 can ensure that the upper cover 6 and the shell 3 are substantially sealed, preventing external impurities from entering the upper cover 6 and affecting internal electrical connections to cause short circuits. The information acquisition assembly 7 is arranged between the first seal 8 and the second seal 81, and the first seal 8 and the second seal 81 can seal the gap between the information acquisition assembly 7 and the shell 3 and the upper cover 6 to ensure the sealing. In this embodiment, the seal 8 is a sealing foam, which also has a shock-absorbing effect to protect the information acquisition assembly 7.

[0052] In some embodiments, the battery pack further comprises a top cover 13 covering the accommodating cavity 11, and a buffer 9 connected between the upper cover 6 and the top cover 13 in the first direction Z.

[0053] The buffer 9 is arranged between the top cover 13 and the upper cover 6, which can reduce the impact between the top cover 13 and the upper cover 6, and also prevent the upper cover 6 from being damaged when the top cover 13 collapses.

[0054] In some embodiments, the shell 3 comprises a body 36, a first protrusion 35 and a second protrusion 33 connected to the body 36, the upper cover 6 and the body 36 form an assembly cavity 31, the fixing member 5 is fixedly connected to the body 36, the first protrusion 35 and the second protrusion 33 are arranged in the first chamber 311, and the first protrusion 35 and the second protrusion 33 are arranged in the first direction Y, the control plate 41 is clamped between the first protrusion 35 and the second protrusion 33, and the fixing member 5 is press-fitted with the control plate 41 in the first direction Z.

[0055] The shell 3 is arranged in the first chamber 311, the control plate 41 is clamped between the first protrusion 35 and the second protrusion 33, and the first protrusion 35 and the second protrusion 33 clamp and fix the control plate 41 in the second direction Y. The size of the first chamber 311 in the first direction X is matched with the control plate 41, so that the inner wall of the body 36 limits the control plate 41 in the first direction X, and the body 36, the first protrusion 35 and the second protrusion 33 cooperate to limit the position of the control plate 41 in the second direction Y and the third direction X.

[0056] The first protrusion 35 and the second protrusion 33 limit the slave board 41, which simplifies the limiting structure and ensures the overall strength of the shell 3. In the embodiment, the first protrusion 35 and the second protrusion 33 each have two groups, and are located at two ends in the first chamber 311 along the third direction X to limit both ends of the slave board 41, so as to ensure the stability of the slave board 41 in the first chamber 311.

[0057] The fixing member 5 is press-fitted with the slave board 41 along the first direction Z, and the fixing member 5 can press-fit the slave board 41 between the first protrusion 35 and the second protrusion 33 along the first direction Z to limit the slave board 41 in the first direction Z, so as to avoid the movement of the slave board 41 in the first direction Z in the first chamber 311.

[0058] Through the cooperation of the first protrusion 35, the second protrusion 33 and the fixing member 5, the slave board 41 is effectively fixed in each direction in the first chamber 311, the slave board 41 cannot be loose and fall off in the first chamber 311, the screw connection structure is omitted, the short circuit caused by the contact between the screw and the circuit on the slave board 41 after the screw falls off is avoided, and the assembly efficiency and electrical safety of the slave board 41 are improved.

[0059] In some embodiments, the fixing member 5 further has a clamping groove 52 on the side facing the first chamber 311, and the clamping groove 52 extends along the first direction Z, and at least part of the slave board 41 is embedded in the clamping groove 52.

[0060] The slave board 41 is embedded in the clamping groove 52 extending along the first direction Z, and the groove wall of the clamping groove 52 abuts against the slave board 41 after contacting the slave board 41, so as to limit the slave board 41 in the second direction Y, and the groove bottom of the clamping groove 52 presses the slave board 41 in the first direction Z, so as to fix the slave board 41 in the first direction Z. The clamping groove 52 cooperates with the first protrusion 35 and the second protrusion 33 to avoid the movement of the slave board 41 in the assembly cavity 31.

[0061] In some embodiments, the shell 3 has a buckling groove 34 on the side facing the assembly cavity 31 along the second direction Y, and the fixing member 5 has a buckling claw 51 on the side facing the shell 3 along the second direction Y, and the buckling claw 51 is connected with the buckling groove 34 in buckling connection.

[0062] The buckling groove 34 and the buckling claw 51 are connected between the fixing member 5 and the shell 3 in buckling connection, so that the fixing member 5 and the shell 3 are stopper-connected along the first direction Z to avoid the movement of the fixing member 5 in the first direction Z. The buckling connection simplifies the assembly mode of the fixing member 5, accelerates the assembly efficiency of the fixing member 5 during assembly, omits the screw structure, and improves the electrical safety.

[0063] The utility model also provides an optimal embodiment of electric equipment, including battery pack, the specific structure of battery pack is same with the specific structure of battery pack in any embodiment above, and this does not repeat here.

[0064] To sum up, the utility model embodiment provides a kind of battery pack and electric equipment, the shell and upper cover of slave control component are enclosed assembly cavity, fixed part divides assembly cavity into relatively independent first chamber and second chamber, the slave control board of integrated board is located in first chamber, plug-in part is located in second chamber, slave control board and plug-in part are arranged separately, connector and plug-in part are plugged in second chamber, foreign matter cannot pass through fixed part and enter first chamber, avoid slave control board to be invaded by foreign matter;While the main body board of information acquisition component is penetrated in the notch of upper cover, i.e. only the notch of second chamber is connected with outside, avoid connector, plug-in part expose in the accommodating cavity of battery pack, reduce the connection position of connector and plug-in part in second chamber in the foreign matter invasion of battery pack, ensure signal transmission and the safety of battery pack.

[0065] The above is only the preferred embodiment of the utility model, it should be pointed out, for the ordinary skill in the art, without departing from the technical principle of the utility model, can make a number of improvements and replacement, these improvements and replacement also should be regarded as the protection range of the utility model.

Claims

1. A battery pack having a first direction, a second direction, and a third direction that intersect two by two, characterized by, The battery pack comprises: a box body having a receiving cavity; a battery cell arranged in the receiving cavity; a slave control component arranged in the receiving cavity; an information acquisition assembly arranged in the receiving cavity, the information acquisition assembly comprising a main plate and a connector, the main plate connecting the battery cell and the connector; the slave control component comprises a shell, an integrated plate, a fixing member and an upper cover, the shell and the upper cover jointly define an assembly cavity, the fixing member is arranged in the assembly cavity, the fixing member divides the assembly cavity into a first chamber and a second chamber along the first direction, the fixing member is provided with an avoiding opening penetrating through the fixing member along the first direction; the integrated plate comprises a slave control plate and a plug-in member integrated with the slave control plate, the slave control plate is arranged in the first chamber, the plug-in member penetrates through the avoiding opening along the first direction and is at least partially arranged in the second chamber; the upper cover is provided with a notch on a side close to the battery cell, the notch is in communication with the second chamber, the main plate penetrates through the notch, the connector is arranged in the second chamber, and the connector is plugged with the plug-in member.

2. The battery pack of claim 1, wherein, the upper cover comprises a cover plate, a surrounding plate, a first side plate and a partition plate, the surrounding plate is fixedly connected with the cover plate, the surrounding plate is fixedly connected with the shell, the notch penetrates through the surrounding plate along the second direction, the first side plate is arranged on a side of the cover plate facing the second chamber, the partition plate extends along the second direction and is connected with the first side plate, a plurality of partition plates are spaced apart along the third direction, a plurality of avoiding openings are spaced apart along the third direction, along the first direction, the orthogonal projection of the partition plate on the fixing member is located between two adjacent avoiding openings, and the first side plate and the partition plate away from the cover plate are respectively connected with the fixing member.

3. The battery pack of claim 2, wherein, the upper cover further comprises a second side plate arranged on a side of the cover plate facing the second chamber along the first direction, the partition plate 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 along the first direction, the size of the second side plate is smaller than the size of the first side plate.

4. The battery pack of claim 2, wherein, the upper cover further comprises an ear plate connected with the cover plate, a plurality of ear plates are spaced apart along the third direction; the slave control component further comprises a boss corresponding to the ear plate, the boss is fixedly arranged on a side of the shell away from the second chamber, and the ear plate and the boss are snap-fit connected.

5. The battery pack of claim 3, wherein, the battery pack further comprises a first sealing member and a second sealing member, a sealing groove in communication with each other is arranged between the first side plate and the surrounding plate and between the second side plate and the surrounding plate, the first sealing member and the second sealing member are stacked in the sealing groove, and the main plate penetrates between the first sealing member and the second sealing member.

6. The battery pack of any one of claims 1-5, wherein, the battery pack further comprises a top cover covering the receiving cavity; and the battery pack further comprises a buffer member connected between the upper cover and the top cover along the first direction.

7. The battery pack of any one of claims 1-5, wherein, The shell comprises a body and a first protrusion and a second protrusion connected with the body, the upper cover and the body enclose the assembly cavity, the fixing member is fixedly connected with the body, the first protrusion and the second protrusion are arranged in the first cavity, the first protrusion and the second protrusion are arranged in the second direction, the slave control board is clamped between the first protrusion and the second protrusion, and the fixing member is press-fitted with the slave control board in the first direction.

8. The battery pack of claim 7, wherein, The side of the fixing member towards the first cavity is further provided with a clamping groove extending in the first direction, and at least part of the slave control board is embedded in the clamping groove.

9. The battery pack of any one of claims 1-5, wherein, The side of the shell towards the assembly cavity in the second direction is provided with a buckling groove, and the side of the fixing member towards the shell in the second direction is provided with a buckling claw, and the buckling claw is buckled and connected with the buckling groove.

10. An electric device, characterized by The battery pack comprises any one of claims 1-9.

Images