Battery pack and electric device

Abstract

According to the battery pack, a housing is arranged on the face, away from a box body, of a cover plate, a containing cavity is defined between the housing and the cover plate, and an electrical assembly is arranged in the containing cavity, so that the electrical assembly is separated from the box body, the space utilization rate of the box body is increased, and the energy density of the battery pack is increased; the cover plate covers the end wall, provided with the first opening, of the box body, the body covers the first opening, the protruding part is arranged at one end of the body, the through hole is formed in the protruding part, and the through hole is formed in the side, away from the second wall, of the first wall. Therefore, the connector can be installed in the battery pack, the manufacturing cost is reduced, the assembling convenience and the assembling efficiency are improved, the electrical assembly can be conveniently connected with an external electrical device through the connector, the housing and the cover plate can be detachably connected, the maintenance convenience of the electrical assembly is improved, the maintenance cost is reduced, and the requirement for rapid maintenance is met.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Art

[0002] The electrical components in the battery pack are used to control the communication transmission and current transmission between the battery pack and external electrical devices. Existing electrical components are usually fixed in the lower box of the battery pack for supporting the battery pack. In this case, if the electrical components in the electrical components need to be replaced or repaired, the upper cover of the battery pack needs to be removed as a whole, resulting in low maintenance efficiency and high maintenance costs, which makes it difficult to meet the needs of quick maintenance. Utility Model Content

[0003] The utility model aims to provide a battery pack and an electrical device to solve the problems of low maintenance efficiency and high maintenance cost of electrical components in the current battery pack.

[0004] A first aspect of an embodiment of the present application provides a battery pack, wherein the battery pack has a first direction and a third direction intersecting each other, and the battery pack comprises: a box body, wherein the box body comprises a first wall and a second wall arranged opposite to each other along the first direction and two end walls arranged opposite to each other along the third direction, wherein the two end walls are respectively connected to the first wall and the second wall on opposite sides of the third direction, and a first opening is provided on one of the end walls; a cover plate, which is provided on the end wall having the first opening, and the cover plate comprises a main body and a protrusion connected to the main body, wherein the main body covers the first opening, and the protrusion is provided on the third direction. In the first direction, the protrusion is protrudingly arranged at one end of the main body adjacent to the first wall, and a through hole is opened on the protrusion, and the through hole is located on a side of the first wall away from the second wall in the first direction; a cover shell is arranged on a side of the cover plate away from the box body in the third direction, a receiving cavity is defined between the cover shell and the cover plate, the through hole is communicated with the receiving cavity, and the cover shell and the cover plate are detachably connected; an electrical component is arranged in the receiving cavity; a connector is at least partially arranged in the receiving cavity and inserted into the through hole, and the electrical component is connected to the connector.

[0005] Optionally, the battery pack further includes an explosion-proof valve, which is disposed on the cover shell, and an air inlet end of the explosion-proof valve is connected to the accommodating chamber.

[0006] Optionally, a receiving groove is provided on a side of the cover shell away from the cover plate along the third direction, and the explosion-proof valve is arranged in the receiving groove.

[0007] Optionally, the electrical component includes a BMS module, a BDU module and a wiring harness; the through hole includes a first through hole, the connector includes a signal connector, and the signal connector is inserted into the first through hole; the BMS module and the BDU module are electrically connected to the signal connector through the wiring harness.

[0008] Optionally, the battery pack also includes a battery pack, a accommodating cavity is provided inside the box, the battery pack is arranged in the accommodating cavity, and the electrical component also includes an input conductive bus and an output conductive bus; the BDU module includes an input end and an output end, and the input end is electrically connected to the battery pack through the input conductive bus; the through hole also includes a second through hole; the connector also includes an electrical connector, the electrical connector is inserted into the second through hole, the output end is arranged on a side of the BDU module adjacent to the second through hole along the first direction, and the output end is electrically connected to the electrical connector through the output conductive bus.

[0009] Optionally, the battery pack also has a second direction, and the first direction, the second direction and the third direction intersect each other; the battery pack also includes a first support and a second support; the first support and the second support are respectively arranged on a side of the cover plate facing away from the box body in the third direction, and are arranged in the accommodating cavity at intervals along the second direction; the first support and the second support are respectively detachably connected to the cover plate; the BMS module is detachably arranged on the first support, and the BDU module is detachably arranged on the second support.

[0010] Optionally, along the third direction, a first groove is formed on a side of the first support facing the cover plate, and / or a second groove is formed on a side of the second support facing the cover plate.

[0011] Optionally, the battery pack further includes a sealing gasket, which is arranged at the connection between the cover plate and the cover shell.

[0012] Optionally, along the first direction, the cover plate has a first end and a second end arranged opposite to each other, and the distance between the first end and the second end is W1 mm; along the first direction, the distance between the first wall and the second wall is W2 mm; satisfying: 20mm≤W1-W2≤200mm.

[0013] A second aspect of an embodiment of the present application provides an electrical device, comprising the battery pack as described above.

[0014] In summary, the embodiments of the present application provide a battery pack and an electrical device having the battery pack, wherein the battery pack is provided with a cover shell on the side of the cover plate facing away from the box body, and a receiving cavity is defined between the cover shell and the cover plate, and the electrical components are all provided in the receiving cavity, so that the electrical components are separated from the box body, and the electrical components do not need to be provided in the box body, thereby improving the space utilization of the box body and further improving the energy density of the battery pack. Moreover, the cover plate is provided on the end wall of the box body where the first opening is provided, and the main body of the cover plate covers the first opening to close the first opening. In the first direction, a protrusion is provided at one end of the main body adjacent to the first wall of the box body, and a through hole is provided on the protrusion, so that the opening position of the through hole is located on the side of the first wall away from the second wall in the first direction. When assembling the battery pack, it is only necessary to insert the connector into the through hole so that at least part of the connector is arranged in the accommodating cavity to realize the installation of the connector in the battery pack. Compared with the existing battery pack, it is only necessary to form a protrusion extending to the outside of the first wall of the box body on the cover plate, and to form a through hole on the protrusion to realize assembly with the connector. The processing is convenient, which can reduce the manufacturing cost of the battery pack, and can improve the assembly convenience and assembly efficiency of the connector, facilitate the connection of the electrical components with the external electrical devices through the connector, and the detachable connection between the cover shell and the cover plate improves the maintenance convenience of the electrical components, reduces the maintenance cost, and meets the needs of quick maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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.

[0016] Figure 1 is a schematic diagram of the structure of a battery pack provided in an embodiment of the present application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at point A;

[0018] Figure 3 is a schematic diagram of a top view of the battery pack provided in an embodiment of the present application with the cover removed;

[0019] Figure 4 It is a schematic diagram of the combined structure of the cover plate, the first support and the second support in the battery pack provided in the embodiment of the present application;

[0020] Figure 5 It is a bottom view of the combined structure of the cover plate and the box body in the battery pack provided in the embodiment of the present application.

[0021] Description of main reference numerals:

[0022] 1. Battery pack;

[0023] 10. box body, 101. accommodating chamber, 11. first wall, 12. second wall, 13. end wall, 13a. first end wall, 131. first opening, 13b. second end wall;

[0024] 20. Cover plate, 201. First end, 202. Second end, 211. Body, 212. Protrusion, 22. Through hole, 221. First through hole, 222. Second through hole, 223. Third through hole, 23. First support, 231. First groove, 232. First support rod, 24. Second support, 241. Second groove, 242. Second support rod, 243. Third support rod, 25. Sealing pad, 26. Socket, 261. First socket, 262. Second socket;

[0025] 30. cover shell, 301. containing chamber, 31. explosion-proof valve, 32. containing tank;

[0026] 40. Electrical components, 41. BMS module, 410. First signal interface, 42. BDU module, 420. Second signal interface, 421. Input terminal, 4211. Positive input terminal, 4212. Negative input terminal, 422. Output terminal, 4221. First positive output terminal, 4222. Second positive output terminal, 4223. Negative output terminal, 43. Wiring harness, 44. Input conductive row, 441. Positive input row, 442. Negative input row, 45. Output conductive row, 451. First output row, 452. Second output row, 453. Third output row, 454. Fourth output row;

[0027] 50. Connector, 51. Signal connector, 52. Electrical connector, 521. High voltage connector, 522. Fast charging connector;

[0028] 60. battery pack, 61. positive connection terminal, 62. negative connection terminal;

[0029] 70. Bottom plate;

[0030] X, first direction, Y, second direction, Z, third direction. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and beneficial effects of this application clearer, the following further describes this application in detail in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described in this specification are only for explaining this application, not for limiting this application.

[0032] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" refers to two or more, unless otherwise clearly and specifically defined.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the application examples, "parallel" means that the angle formed by a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°. In addition, "perpendicular" means that the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distances or equal angles refer to a state where the tolerance range is -1% to 1%.

[0036] This embodiment provides an electric device, including a battery pack 1, the battery pack 1 serving as a power supply for the electric device. The electric device may be, but is not limited to, a mobile device (such as a mobile phone, a laptop computer, etc.), an electric vehicle (such as a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, an electric bicycle, an electric scooter, an electric golf cart, an electric truck, etc.), an electric train, a ship, a satellite, an energy storage system, etc.

[0037] In some embodiments of the present application, a battery pack 1 is provided, referring to Figure 1 to Figure 5 The battery pack 1 includes: a box body 10, a cover plate 20, a cover shell 30, an electrical component 40 and a connector 50. The battery pack 1 has a first direction X, a second direction Y and a third direction Z that intersect each other. Figure 1 to Figure 3 as well as Figure 5 In the illustrated embodiment, the first direction X, the second direction Y and the third direction Z are orthogonal to each other.

[0038] Reference Figure 1 to Figure 3 as well as Figure 5 The box body 10 includes a first wall 11 and a second wall 12 arranged opposite to each other along a first direction X. The box body 10 also includes two end walls 13 arranged opposite to each other along a third direction Z. The two end walls 13 are respectively connected to the first wall 11 and the second wall 12 on opposite sides of the third direction Z. Figure 1 In the illustrated embodiment, the two end walls 13 include a first end wall 13a and a second end wall 13b. The first end wall 13a is provided with a first opening 131. The first end wall 13a has two opposite ends in the first direction X connected to the same side of the first wall 11 and the second wall 12 in the third direction Z. The second end wall 13b has two opposite ends in the first direction X connected to the other side of the first wall 11 and the second wall 12 in the third direction Z. Figure 1 to Figure 3 as well as Figure 5 The first direction X is the length direction of the box body 10 , the second direction Y is the width direction of the box body 10 , and the third direction Z is the height direction of the box body 10 .

[0039] Reference Figure 1 to Figure 5 The cover plate 20 is disposed on the end wall 13 having the first opening 131, as shown in FIG. Figure 1 and Figure 2In the illustrated embodiment, the cover plate 20 is covered on the first end wall 13a. The cover plate 20 includes a body 211 and a protrusion 212 connected to the body 211. The body 211 covers the first opening 131 provided on the first end wall 13a. The protrusion 212 is protrudingly provided at one end of the body 211 adjacent to the first wall 11 of the box body 10 along the first direction X. A through hole 22 is provided on the protrusion 212. The through hole 22 passes through the protrusion 212 along the third direction Z. The through hole 22 is located on a side of the first wall 11 away from the second wall 12 in the first direction X. Specifically, the protrusion 212 is protrudingly provided at one end of the body 211 adjacent to the first wall 11 of the box body 10, that is, the protrusion 212 is formed along the first direction X from one end of the body 211 adjacent to the first wall 11 in the first direction X. Along the third direction Z, the orthographic projection of the first end wall 13a on the plane where the cover plate 20 faces the box body 10 is located falls within the body 211, and the orthographic projection of the first end wall 13a on the plane where the cover plate 20 faces the box body 10 is located is spaced from the through hole 22 along the first direction X. The body 211 and the protruding portion 212 are sequentially connected along the first direction X, and the body 211 and the protruding portion 212 are integrally formed.

[0040] Reference Figure 1-2 The cover 30 is disposed on the side of the cover plate 20 that is away from the box body 10 in the third direction Z. Figure 1 , a receiving cavity 301 is defined between the cover 30 and the cover plate 20, and the through hole 22 is connected to the receiving cavity 301. Specifically, along the third direction Z, the orthographic projection of the through hole 22 on the plane where the side of the cover plate 20 facing away from the box body 10 is located falls within the orthographic projection of the receiving cavity 301 on the plane where the side of the cover plate 20 facing away from the box body 10 is located, and the cover 30 and the cover plate 20 are detachably connected. Specifically, Figure 1 and Figure 2 In the illustrated embodiment, the cover shell 30 includes two side edges arranged opposite to each other along the first direction X, one side edge overlaps with the protrusion 212 along the third direction Z, and the other side edge overlaps with the body 211 along the third direction Z, so that the cover shell 30 covers most of the protrusion 212 and part of the body 211.

[0041] Reference Figure 1 to Figure 3 The electrical component 40 is disposed in the accommodating cavity 301 . Specifically, the electrical component 40 is disposed on a side of the cover plate 20 that is away from the box body 10 in the third direction Z, and the cover plate 20 forms a support for the electrical component 40 .

[0042] Reference Figure 1-2 At least part of the connector 50 is disposed in the accommodating cavity 301 and inserted into the through hole 22, and the electrical component 40 is connected to the connector 50, as shown in FIG. Figure 1-2In the illustrated embodiment, the connector 50 extends along the third direction Z and is inserted into the through hole 22, one end of the connector 50 in the third direction Z is located in the accommodating cavity 301 and is connected to the electrical component 40, and the other end of the connector 50 in the third direction Z is located below the protrusion 212 to be connected to an external electrical device.

[0043] The electrical components in the battery pack are used to control the communication transmission and current transmission between the battery pack and external electrical devices. Existing electrical components are usually fixed in the battery pack to support the lower box of the battery pack. In this case, if the electrical components in the electrical components need to be replaced or repaired, the upper cover of the battery pack needs to be removed as a whole, resulting in low maintenance efficiency and high maintenance costs, which makes it difficult to meet the needs of quick maintenance. Moreover, the electrical components are arranged in the lower box, which will occupy the internal space utilization of the lower box, thereby affecting the energy density of the battery pack. If the electrical components need to be maintained, the cover needs to be removed as a whole, resulting in low maintenance efficiency. In addition, the connector used by the electrical components to connect to external electrical devices is also usually arranged on the side wall of the lower box, resulting in a high manufacturing cost of the lower box.

[0044] The battery pack 1 provided in the embodiment of the present application is provided with a cover plate 20 on the first end wall 13a of the box body 10, the cover plate 20 is covered on the first end wall 13a, and the body 211 of the cover plate 20 covers the first opening 131 opened on the first end wall 13a, and a protrusion 212 is provided on one end of the body 211 adjacent to the first wall 11 of the box body 10 in the first direction X, the protrusion 212 is protruding along the first direction X at one end of the body 211 adjacent to the first wall 11 of the box body 10 in the first direction X, and a through hole 22 is opened on the protrusion 212 to pass through the protrusion 212 along the third direction Z. A cover shell 30 is provided on a side of the cover plate 20 which is away from the box body 10 in the third direction Z, and a receiving cavity 301 is defined between the cover shell 30 and the cover plate 20, the through hole 22 is located in the receiving cavity 301, and the electrical component 40 is arranged in the receiving cavity 301, the cover plate 20 forms a support for the electrical component 40, the connector 50 is inserted into the through hole 22, and the electrical component 40 is connected to the connector 50, so that the electrical component 40 is separated from the box body 10, avoiding the electrical component 40 occupying the internal space of the box body 10, improving the internal space utilization of the box body 10, and improving the energy density of the battery pack 1, and the connector 50 is inserted into the through hole 22, and when the cover plate 20 is processed and formed, it is only necessary to form a protrusion 212 on the main body 211 of the cover plate 20 and open a through hole 22 on the protrusion 212 to realize assembly with the connector 50, and the processing and forming of the cover plate 20 is simple and convenient. Compared with the existing battery pack in which the connector is arranged on the side wall of the box body, the battery pack 1 provided in the embodiment of the present application can effectively reduce the manufacturing cost and improve the assembly convenience and assembly efficiency of the connector 50 in the battery pack 1. The structural design of the protrusion 212 extending to the outside of the box body 10 in the first direction X facilitates the connection of the connector 50 with external electrical devices, and the detachable connection between the cover shell 30 and the cover plate 20 only requires the removal of the cover shell 30 to achieve the repair and maintenance of the electrical components 40 and the connector 50, thereby improving the repair convenience of the electrical components 40 and the connector 50, further reducing the repair cost, and meeting the needs of quick repair.

[0045] In some embodiments, reference Figure 1 and Figure 2The electrical component 40 is disposed on the body 211 of the cover plate 20, and the electrical component 40 and the connector 50 are spaced apart along the first direction X. The electrical component 40 is disposed on the body 211, and the body 211 is covered on the first end wall 13a of the box body 10. The box body 10 can form a support for the body 211, thereby increasing the support stability of the body 211 for the electrical component 40, and preventing the electrical component 40 from affecting the connection stability when the battery pack 1 is shaken or hit. The connector 50 is inserted into the through hole 22, so that one end of the connector 50 in the third direction Z is located in the accommodating cavity 301 to be connected to the electrical component 40, and the cover 30 can form protection for the connection between the connector 50 and the electrical component 40. The other end of the connector 50 in the third direction Z is located below the protrusion 212 to be connected to an external electrical device, thereby improving the connection convenience, and the connection end of the connector 50 and the external electrical device is arranged below the protrusion 212, which can form shielding and protection for the connection between the connector 50 and the external electrical device, thereby ensuring the stability of the connection.

[0046] In some embodiments, reference Figure 1 The battery pack 1 also includes an explosion-proof valve 31, which is arranged on the cover 30. The air inlet end of the explosion-proof valve 31 is connected to the accommodating chamber 301. The explosion-proof valve 31 is breathable and waterproof. When the battery pack inside the box body 10 has an abnormality during the cycle (such as short circuit, expansion shock) leading to thermal runaway, the pressure generated by the thermal runaway gas increases sharply in a short time. The explosion-proof valve 31 can quickly discharge the thermal runaway gas entering the accommodating chamber 301, relieve the internal pressure of the accommodating chamber 301, reduce the damage of the pressure to the electrical components 40, and improve the service life and safety of the battery pack 1.

[0047] In some embodiments, reference Figure 1 A receiving groove 32 is provided on one side of the cover shell 30 away from the cover plate 20 along the third direction Z, and the explosion-proof valve 31 is arranged in the receiving groove 32. The opening of the receiving groove 32 can form a protection for the explosion-proof valve 31, avoid the explosion-proof valve 31 protruding from the cover shell 30 and contacting external electrical components, and improve the service life of the explosion-proof valve 31.

[0048] In some embodiments, reference Figure 1 to Figure 3 The electrical component 40 includes: a BMS module 41, a BDU module 42 and a wiring harness 43. The BMS is a Battery Management System, the BDU is a Battery Disconnect Unit, and the BMS module 41 and the BDU module 42 are arranged at intervals along the second direction Y. Figure 4 and Figure 5The through hole 22 includes a first through hole 221, the connector 50 includes a signal connector 51, the signal connector 51 is inserted into the first through hole 221, and the BMS module 41 and the BDU module 42 are electrically connected to the signal connector 51 through the wiring harness 43. Figure 2 In the embodiment shown, the BMS module 41 is provided with a first signal interface 410 on one side facing the BDU module 42 in the second direction Y. Figure 3 In the embodiment shown, the BDU module 42 is provided with a second signal interface 420 on one side facing the BMS module 41 in the second direction Y, Figure 2 and Figure 3 After the first signal interface 410 is connected to the second signal interface 420, it is electrically connected to the signal connector 51 at the inner side of the accommodating cavity 301 in the third direction Z through the wiring harness 43. Figure 2 One end of the signal connector 51 located below the protrusion 212 in the third direction Z is electrically connected to the external electrical device to transmit signals, thereby realizing low-voltage communication between the battery pack 1 and the external electrical device and high-voltage control of the battery pack 1.

[0049] In some embodiments, reference Figure 2 The signal connector 51 is inserted into the first through hole 221 from bottom to top along the third direction Z, which is convenient for assembly and will not affect the wiring harness 43 in the accommodating cavity 301.

[0050] In some embodiments of the present application, reference Figure 1 and Figure 2 The battery pack 1 also includes a battery pack 60, referring to Figure 2 The box body 10 has a receiving cavity 101 inside, and the battery pack 60 is arranged in the receiving cavity 101. Figure 2 and Figure 3 The electrical component 40 further includes an input conductive bar 44 and an output conductive bar 45. Figure 3 The BDU module 42 includes an input terminal 421 and an output terminal 422. The input terminal 421 is electrically connected to the battery pack 60 through the input conductive bar 44. Figure 4 and Figure 5 , the through hole 22 also includes a second through hole 222, referring to Figure 2 The connector 50 also includes an electrical connector 52, which is inserted into the second through hole 222, and the output end 422 is arranged on a side of the BDU module 42 adjacent to the second through hole 222 along the first direction X, and the output end 422 is electrically connected to the electrical connector 52 through the output conductive row 45.

[0051] Specific as Figure 2 In the embodiment shown, the number of electrical connectors 52 is two, including a high voltage connector 521 and a fast charging connector 522. Figure 4 and Figure 5 The through hole 22 includes a second through hole 222 and a third through hole 223, the high-voltage connector 521 is inserted into the second through hole 222, and the fast-charge connector 522 is inserted into the third through hole 223. Figure 3 The input terminal 421 includes a positive input terminal 4211 and a negative input terminal 4212, the input conductive row 44 includes a positive input row 441 and a negative input row 442, the positive input terminal 4211 is electrically connected to the positive connection terminal 61 of the battery pack 60 through the positive input row 441, and the negative input terminal 4212 is electrically connected to the negative connection terminal 62 of the battery pack 60 through the negative input row 442. Specifically, referring to Figure 4 The cover plate 20 is provided with a plug hole 26, which penetrates the cover plate 20 along the third direction Z. Figure 4 In the embodiment shown, the jack 26 includes a first jack 261 and a second jack 262, and the positive input row 441 passes through the first jack 261 along the third direction Z and is electrically connected to the positive connection terminal 61 of the battery pack 60, referring to Figure 2 The negative input row 442 passes through the second plug hole 262 along the third direction Z and is electrically connected to the negative connection terminal 62 of the battery pack 60. Figure 2 and Figure 3 In the embodiment shown, the output terminal 422 includes a first positive output terminal 4221, a second positive output terminal 4222 and a negative output terminal 4223. Figure 2 In the illustrated embodiment, the output conductive row 45 includes a first output row 451, a second output row 452, a third output row 453 and a fourth output row 454, the first positive output terminal 4221 is electrically connected to the positive terminal of the high-voltage connector 521 located at the inner end of the accommodating cavity 301 through the first output row 451, the second positive output terminal 4222 is electrically connected to the positive terminal of the fast-charging connector 522 located at the inner end of the accommodating cavity 301 through the third output row 453, the negative output terminal 4223 is electrically connected to the negative terminal of the fast-charging connector 522 located at the inner end of the accommodating cavity 301 through the fourth output row 454, and the second output row 452 connects the high-voltage connector 521 and the fast-charging connector 522.

[0052] In some embodiments, reference Figure 2 The high-voltage connector 521 is inserted into the second through hole 222 from bottom to top along the third direction Z, and the fast-charging connector 522 is inserted into the third through hole 223 from bottom to top along the third direction Z, which improves the convenience of assembly without affecting the assembly of the output conductive bar 45 in the accommodating cavity 301 and the BDU module 42.

[0053] In some embodiments, reference Figure 4The battery pack 1 further includes a first support 23 and a second support 24, which are respectively arranged on a side of the cover plate 20 away from the box body 10 in the third direction Z, and the first support 23 and the second support 24 are arranged in the accommodating cavity 301 along the second direction Y at intervals, and the first support 23 and the second support 24 are respectively detachably connected to the cover plate 20, referring to Figure 2 The BMS module 41 is detachably mounted on the first support 23, and the BDU module 42 is detachably mounted on the second support 24. The design of the first support 23 and the second support 24 can avoid direct contact between the BMS module 41 and the BDU module 42 and the cover plate 20, which is convenient for heat dissipation of the BMS module 41 and the BDU module 42. Moreover, the detachable structural design is convenient for improving assembly convenience and subsequent maintenance convenience.

[0054] In some embodiments, reference Figure 4 Along the third direction Z, a first groove 231 is provided on one side of the first support 23 facing the cover plate 20. The first groove 231 penetrates the first support 23 along the length direction of the first support 23 to form a through groove structure. The opening of the first groove 231 can provide ventilation effect while reducing the weight of the first support 23, thereby facilitating the heat dissipation of the BMS module 41.

[0055] In some embodiments, reference Figure 4 The first support 23 supports the BMS module 41 in the form of a support rod. Specifically, the first support 23 includes two first support rods 232. The first support rods 232 extend along the first direction X. The two first support rods 232 are spaced apart along the second direction Y. The BMS module 41 is arranged on the two first support rods 232. The first groove 231 is opened on a side of the first support rod 232 facing the cover plate 20 in the third direction Z. The first support rod 232 is detachably mounted on the cover plate 20 by bolts, and the BMS module 41 is detachably mounted on the first support rod 232 by bolts.

[0056] In some embodiments, reference Figure 4 Along the third direction Z, a second groove 241 is provided on one side of the second support 24 facing the cover plate 20. The second groove 241 penetrates the second support 24 along the length direction of the second support 24 to form a through groove structure. The opening of the second groove 241 can provide ventilation effect while reducing the weight of the second support 24, thereby facilitating the heat dissipation of the BDU module 42.

[0057] In some embodiments, reference Figure 4The second support 24 supports the BDU module 42 in the form of a support rod. Specifically, the second support 24 includes a second support rod 242 and a third support rod 243. The number of the second support rod 242 is one, and the second support rod 242 extends along the second direction Y (i.e., along the length direction of the BDU module 42). The second support rod 242 is provided with a second groove 241 on one side of the cover plate 20 in the third direction Z. The number of the third support rod 243 is two, and the third support rod 243 extends along the first direction X. The two third support rods 243 The third support rod 243 is arranged at intervals along the second direction Y, and one end of the third support rod 243 in the first direction X abuts against the second support rod 242. The third support rod 243 is provided with a second groove 241 on a side facing the cover plate 20 in the third direction Z. The second support rod 242 and the third support rod 243 cooperate to form a support for the BDU module 42. The second support rod 242 and the third support rod 243 are respectively detachably mounted on the cover plate 20 by bolts, and the BDU module 42 is detachably mounted on the second support rod 242 and the third support rod 243 by bolts.

[0058] In some embodiments, reference Figure 1 and Figure 2 The battery pack 1 also includes a sealing gasket 25, which is arranged at the connection between the cover plate 20 and the cover shell 30. Specifically, the sealing gasket 25 is annular in shape and is arranged on a side of the cover plate 20 that is away from the box body 10 in the third direction Z. The setting of the sealing gasket 25 can form a seal at the connection between the cover plate 20 and the cover shell 30, thereby ensuring the sealing of the accommodating cavity 301, and ensuring the connection stability and service life of the electrical component 40 and the connector 50 in the accommodating cavity 301.

[0059] In some embodiments, reference Figure 3 The cover plate 20 has a first end 201 and a second end 202 arranged opposite to each other along the first direction X. Along the first direction X, the distance between the first end 201 and the second end 202 is W1 mm, and the distance between the first wall 11 and the second wall 12 of the box body 10 is W2 mm. mm, satisfying: 20mm≤W1-W2≤200mm, specifically, the difference between W1 and W2 can be any value of 20mm, 50mm, 80mm, 100mm, 120mm, 150mm, 180mm, 200mm or any value in the range composed of any two values, the difference between W1 and W2 is the length of the protrusion 212 of the cover plate 20 in the first direction X, when the difference between W1 and W2 is within the above range, the protrusion 212 can extend in the first direction X to a sufficient distance from the first wall 11 of the box body 10 to the side of the second wall 12, thereby ensuring the assembly between the through hole 22 on the protrusion 212 and the connector 50, ensuring the assembly convenience of the connector 50, and further ensuring the connection stability between the connector 50 and the BMS module 41 and the BDU module 42.

[0060] In some embodiments, reference Figure 1 and Figure 5 The battery pack 1 further includes a bottom plate 70. A second opening (not shown) is formed on the second end wall 13b of the box body 10. The bottom plate 70 is covered on the second end wall 13b and covers the second opening.

[0061] On the other hand, the present application also provides an electric device, including the battery pack as described in the above embodiment. The electric device can be an electric car, an electric motorcycle, or other electric device.

[0062] The technical solutions provided by the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery pack, the battery pack having a first direction (X) and a third direction (Z) intersecting each other, characterized in that: The battery pack comprises: A box body (10), the box body (10) comprising a first wall (11) and a second wall (12) arranged opposite to each other along the first direction (X), and two end walls (13) arranged opposite to each other along the third direction (Z), the two end walls (13) being respectively connected to opposite sides of the first wall (11) and the second wall (12) in the third direction (Z), and a first opening (131) being formed on one of the end walls (13); A cover plate (20) is arranged on the end wall (13) provided with the first opening (131), the cover plate (20) comprising a body (211) and a protruding portion (212) connected to the body (211), the body (211) covering the first opening (131); along the first direction (X), the protruding portion (212) is protrudingly arranged at one end of the body (211) adjacent to the first wall (11), the protruding portion (212) is provided with a through hole (22), and the through hole (22) is located on a side of the first wall (11) away from the second wall (12) in the first direction (X); a cover shell (30), which is arranged to cover a side of the cover plate (20) that is away from the box body (10) in the third direction (Z); a receiving cavity (301) is defined between the cover shell (30) and the cover plate (20); the through hole (22) is in communication with the receiving cavity (301); and the cover shell (30) and the cover plate (20) are detachably connected; An electrical component (40) is disposed in the accommodating cavity (301); A connector (50) is at least partially disposed in the accommodating cavity (301) and inserted into the through hole (22); the electrical component (40) is connected to the connector (50).

2. The battery pack according to claim 1, characterized in that: The battery pack further comprises an explosion-proof valve (31), wherein the explosion-proof valve (31) is arranged on the cover shell (30), and an air inlet end of the explosion-proof valve (31) is in communication with the accommodating chamber (301).

3. The battery pack according to claim 2, characterized in that: A receiving groove (32) is provided on a side of the cover shell (30) facing away from the cover plate (20) along the third direction (Z), and the explosion-proof valve (31) is arranged in the receiving groove (32).

4. The battery pack according to claim 1, wherein: The electrical assembly (40) includes a BMS module (41), a BDU module (42) and a wiring harness (43); The through hole (22) comprises a first through hole (221), the connector (50) comprises a signal connector (51), and the signal connector (51) is inserted into the first through hole (221); The BMS module (41) and the BDU module (42) are electrically connected to the signal connector (51) via the wiring harness (43).

5. The battery pack according to claim 4, characterized in that: The battery pack further comprises a battery pack (60); a receiving cavity (101) is provided inside the box body (10); the battery pack (60) is arranged in the receiving cavity (101); and the electrical component (40) further comprises an input conductive bar (44) and an output conductive bar (45); The BDU module (42) comprises an input end (421) and an output end (422), wherein the input end (421) is electrically connected to the battery pack (60) via the input conductive bar (44); The through hole (22) further includes a second through hole (222); The connector (50) further comprises an electrical connector (52), wherein the electrical connector (52) is inserted into the second through hole (222), the output end (422) is arranged on a side of the BDU module (42) adjacent to the second through hole (222) along the first direction (X), and the output end (422) is electrically connected to the electrical connector (52) via the output conductive bar (45).

6. The battery pack according to claim 4, characterized in that: The battery pack further has a second direction (Y), and the first direction (X), the second direction (Y) and the third direction (Z) intersect each other; The battery pack also includes a first support (23) and a second support (24); The first support (23) and the second support (24) are respectively arranged on a side of the cover plate (20) away from the box body (10) in the third direction (Z), and are arranged in the accommodating cavity (301) at intervals along the second direction (Y); The first support (23) and the second support (24) are respectively detachably connected to the cover plate (20); The BMS module (41) is detachably arranged on the first support (23), and the BDU module (42) is detachably arranged on the second support (24).

7. The battery pack according to claim 6, characterized in that: Along the third direction (Z), the first support (23) is provided with a first groove (231) on a side facing the cover plate (20), and / or the second support (24) is provided with a second groove (241) on a side facing the cover plate (20).

8. The battery pack according to claim 1, wherein: The battery pack further comprises a sealing gasket (25), wherein the sealing gasket (25) is arranged at the connection between the cover plate (20) and the cover shell (30).

9. The battery pack according to claim 1, characterized in that: Along the first direction (X), the cover plate (20) has a first end (201) and a second end (202) that are arranged opposite to each other, and the distance between the first end (201) and the second end (202) is W1 mm; Along the first direction (X), the distance between the first wall (11) and the second wall (12) is W2 mm; Meets: 20mm≤W1-W2≤200mm.

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

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