Battery pack and electric device

Abstract

The utility model relates to battery technical field discloses a kind of battery pack and electrical equipment, and battery pack includes: end plate, first confluence piece, second confluence piece and insulating seat, end plate is equipped with the first hole extending along third direction;First confluence piece includes first end;Second confluence piece includes second end, first end and second end are located in the side of end plate;Insulating seat includes seat body, cover and first protruding part, at least part of seat body is located on end plate, cover is connected in the side of seat body away from end plate, seat body and cover enclose insulating passage, first end and second end are electrically connected and located in insulating passage;First protruding part is located in the side of seat body, first protruding part is inserted in first hole;Along third direction, the length of first protruding part is less than the length of the hole wall of first hole.If there is assembly error between first end, second end and insulating seat, by adjusting the position of first protruding part in first hole can absorb assembly error, improve the installation accuracy of insulating seat and confluence piece connecting portion.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack and electrical equipment. Background Technology

[0002] In a battery pack, the busbar is a key electrical connection component. Its function is to connect multiple individual cells or battery packs in series or parallel to form a circuit, realize the collection and transmission of current, and at the same time bear the high current load when the battery pack is working.

[0003] To ensure the electrical safety of the battery pack, existing battery packs typically have insulating bases at the busbar connections. These bases insulate the busbar connections to prevent short circuits between the busbars and other components. The insulating bases are fixed to the end plate using bolts and clips. However, due to the large number of parts involved in the assembly and the significant accumulated assembly errors, gaps or interference inevitably occur between the busbars and the insulating bases.

[0004] In summary, in existing battery packs, the installation accuracy at the connection between the insulating base and the busbar is low, which can easily lead to detachment and poor reliability and safety of the entire battery pack. Utility Model Content

[0005] The technical problem this invention aims to solve is that the installation accuracy at the connection between the insulating base and the busbar in existing battery packs is low, which easily leads to detachment and results in poor reliability and safety of the entire battery pack.

[0006] To solve the above-mentioned technical problems, this utility model provides a technical solution for a battery pack: The battery pack, having a first direction and a third direction perpendicular to each other, includes: The end plate has a first hole, which extends along the third direction. The first busbar includes a first end; The second busbar includes a second end, the first end and the second end being located on the same side of the end plate along the third direction; the insulating seat includes a seat body, a cover body and a first protrusion, at least a portion of the seat body being disposed on the end plate, the cover body being connected to the side of the seat body away from the end plate, the seat body and the cover body forming an insulating channel, the first end and the second end being electrically connected and located within the insulating channel; The first protrusion is connected to one side of the seat body along the first direction, at least a portion of the first protrusion is located in the first hole, and the first protrusion is connected to the end plate; along the third direction, the length of the first protrusion is less than the length of the hole wall of the first hole.

[0007] Furthermore, the first protrusion is a hook, which includes a body and a hook. The body is connected to the base and passes through the first hole along the first direction. The hook is connected to the side of the body near the end plate along the first direction and engages with the end plate.

[0008] Furthermore, the battery pack also has a second direction, the first direction, the second direction and the third direction are perpendicular to each other, two first protrusions are provided, and the two first protrusions are arranged at intervals along the second direction; two first holes are provided, and the two first holes are arranged at intervals along the second direction, and the two first protrusions are respectively inserted through the two first holes.

[0009] Furthermore, the battery pack also has a second direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular, and the end plate has a second hole extending along the third direction; the insulating seat also includes a second protrusion, which is connected to one side of the seat body along the first direction, and the second protrusion and the first protrusion are spaced apart along the second direction, and the second protrusion is inserted into the second hole; along the third direction, the length of the second protrusion is less than the length of the hole wall of the second hole.

[0010] Furthermore, the insulating seat also includes a reinforcing seat, which is disposed on the side of the seat body away from the cover body, and the reinforcing seat and the end plate are spaced apart along the first direction. The first protrusion and the second protrusion are both disposed on the side of the reinforcing seat near the end plate.

[0011] Furthermore, the battery pack also includes fasteners, the reinforcing seat has a fixing hole, the first end has a third hole, the second end has a fourth hole, the third hole, the fourth hole and the fixing hole are connected along the third direction, and the fastener passes through the fixing hole, the third hole and the fourth hole.

[0012] Furthermore, the battery pack also has a second direction, and the first direction, the second direction, and the third direction are perpendicular to each other. The base includes a base plate and two first side plates. The two first side plates are spaced apart on the base plate along the second direction, and the two first side plates are respectively connected to the base plate. The base plate is disposed on the end plate, and the base plate, the two first side plates, and the cover together form the insulating channel.

[0013] Furthermore, the cover includes a cover plate, two second side plates and a first extension, wherein the two second side plates are spaced apart along the second direction on the side of the cover plate near the bottom plate; The first extension is connected to one side of the cover plate in the first direction. The first extension extends along the third direction and is located on the side of the first busbar away from the end plate, so that the first extension along the first direction can partially cover the first busbar.

[0014] Furthermore, the two first side plates are symmetrically arranged, and the first side plates are provided with positioning holes through them along the second direction. The side of the first side plate away from the bottom plate is provided with a groove, and the groove communicates with the positioning hole. The cover also includes two ear plates and two protrusions. The two ear plates are respectively disposed on both sides of the cover plate along the second direction. Both ear plates extend along the third direction. Each ear plate has a protrusion along the second direction. The protrusion is slidably engaged with the groove and inserted into the positioning hole.

[0015] To solve the above-mentioned technical problems, this utility model provides a technical solution for electrical equipment: Electrical equipment includes battery packs using any of the above-mentioned technical solutions.

[0016] Compared with the prior art, the battery pack and electrical equipment of this utility model have the following advantages: the battery pack adopts the design of an end plate, a first busbar, a second busbar and an insulating base. The first end of the first busbar and the second end of the second busbar are located on the same side of the end plate along a third direction. The body and cover of the insulating base are connected to form an insulating channel. The first end and the second end are electrically connected in the insulating channel. The insulating base plays an insulating and protective role for the connection part of the first busbar and the second busbar (i.e. the first end and the second end), effectively isolating the risk of short circuit between the first busbar, the second busbar and the end plate.

[0017] The end plate has a first hole extending in a third direction. A first protrusion of the insulating seat protrudes from the seat body in a first direction. At least a portion of the first protrusion is located within the first hole and is connected to the end plate. The length of the first protrusion in the third direction is less than the length of the hole wall in the third direction, allowing the seat body to be slidably mounted on the end plate via the first protrusion in the third direction. In the third direction, if there is an assembly error between the first end, the second end, and the insulating seat, the assembly error can be absorbed by adjusting the position of the first protrusion in the first hole. Therefore, the insulating seat can flexibly adjust its position to adapt to the actual assembly requirements of the first and second busbars, improving the installation accuracy of the insulating seat and the first and second busbars, ensuring the insulation protection effect, helping to reduce the problem of detachment due to assembly errors, and ensuring the reliability and safety of the entire battery pack. Attached Figure Description

[0018] Figure 1This is an internal structural diagram of the battery pack according to an embodiment of the present invention; Figure 2 yes Figure 1 Assembly diagram of the middle plate, first busbar, second busbar and insulating base; Figure 3 yes Figure 2 Axonometric sectional view of the middle end plate, the first busbar, the second busbar, and the insulating base in the second direction; Figure 4 This is an exploded view of the end plate, the first busbar, the second busbar, and the insulating base according to an embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of the base of the insulating base in an embodiment of this utility model; In the diagram: 1. End plate; 11. First hole; 12. Second hole; 2. First busbar; 21. First end; 210. Third hole; 3. Second busbar; 31. Second end; 310. Fourth hole; 4. Insulating seat; 40. Insulating channel; 41. Seat body; 411. Base plate; 412. First side plate; 413. Positioning hole; 414. Groove; 42. Cover body; 421. Cover plate; 422. Second side plate; 423. First extension; 425. Ear plate; 426. Protrusion; 43. Reinforcing seat; 430. Fixing hole; 45. First protrusion; 451. Body part; 452. Hook part; 46. Second protrusion; 5. Battery pack; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] like Figures 1 to 5 As shown, a battery pack according to an embodiment of the present invention has a first direction X, a second direction Y and a third direction Z that are perpendicular to each other, and includes: an end plate 1, a first busbar 2, a second busbar 3 and an insulating seat 4. The end plate 1 has a first hole 11 that extends along the third direction Z. The first busbar 2 includes a first end 21. The second busbar 3 includes a second end 31. The first end 21 and the second end 31 are located on one side of the end plate 1 along the third direction Z.

[0024] The insulating base 4 includes a base body 41, a cover body 42, and a first protrusion 45. At least a portion of the base body 41 is disposed on the end plate 1. The cover body 42 is connected to the side of the base body 41 away from the end plate 1. The base body 41 and the cover body 42 form an insulating channel 40. The first end 21 and the second end 31 are electrically connected and located within the insulating channel 40. The first protrusion 45 is connected to the side of the base body 41 along the first direction X. At least a portion of the first protrusion 45 is located within the first hole 11, and the first protrusion 45 is connected to the end plate 1. Along the third direction Z, the length of the first protrusion 45 is less than the length of the hole wall of the first hole 11.

[0025] The battery pack adopts a design of end plate 1, first busbar 2, second busbar 3 and insulating base 4. The first end 21 of the first busbar 2 and the second end 31 of the second busbar 3 are located on the side of end plate 1 along the third direction Z. The base body 41 and cover body 42 of the insulating base 4 are connected to form an insulating channel 40. The first end 21 and the second end 31 are electrically connected in the insulating channel 40. The insulating base 4 plays an insulating and protective role for the connection part of the first busbar 2 and the second busbar 3 (i.e. the first end 21 and the second end 31), effectively isolating the risk of short circuit between the busbar and the end plate 1.

[0026] The end plate 1 has a first hole 11 extending along the third direction Z. The first protrusion 45 of the insulating seat 4 protrudes along the first direction X onto the seat body 41. At least a portion of the first protrusion 45 is located within the first hole 11 and is connected to the end plate 1. The length of the first protrusion 45 along the third direction Z is less than the length of the hole wall of the first hole 11 along the third direction Z, allowing the seat body 41 to be slidably mounted on the end plate 1 via the first protrusion 45 along the third direction Z. If there is an assembly error between the first end 21, the second end 31, and the insulating seat 4 in the third direction Z, the assembly error can be absorbed by adjusting the position of the first protrusion 45 in the first hole 11. Therefore, the insulating seat 4 can flexibly adjust its position to adapt to the actual assembly requirements of the busbars (first busbar 2 and second busbar 3), improving the installation accuracy of the connection between the insulating seat 4 and the busbars (first busbar 2 and second busbar 3), ensuring the insulation protection effect, helping to reduce the problem of detachment due to assembly errors, and ensuring the reliability and safety of the entire battery pack.

[0027] It should be noted that, with Figure 1 Taking the perspective of the battery pack as an example: the first direction X refers to the length direction of the battery pack, the second direction Y refers to the width direction of the battery pack, and the third direction Z refers to the height direction of the battery pack. Furthermore, the battery pack also includes a battery assembly 5, which is located on one side of the end plate 1 along the first direction X. The second busbar 3 is electrically connected to the battery assembly 5, and through the second busbar 3 and the first busbar 2, the electrical signal of the battery assembly 5 is led from the battery compartment to the space on the other side of the end plate 1.

[0028] In this embodiment, the first protrusion 45 is a hook, which includes a body part 451 and a hook part 452. The body part 451 is connected to the base 41 and passes through the first hole 11 along the first direction X. The hook part 452 is connected to the side of the body part 451 near the end plate 1 along the first direction X, and the hook part 452 engages with the end plate 1. The first protrusion 45 adopts a hook structure, and its body part 451 passes through the first hole 11. The position of the first protrusion 45 in the first hole 11 can be flexibly adjusted along the third direction Z. Its hook part 452 engages with the end plate 1, which can play a role in preventing it from falling off in the first direction X, ensuring the adjustment flexibility and assembly reliability of the insulating base 4.

[0029] The device comprises two first protrusions 45, which are spaced apart along the second direction Y; and two first holes 11, which are also spaced apart along the second direction Y. The two first protrusions 45 pass through the two first holes 11 respectively. By having the two first protrusions 45 pass through the two first holes 11 of the end plate 1 respectively, and by having the two first protrusions 45 connect to the end plate 1 respectively, two insertion fits are formed. This not only ensures the stability of sliding adjustment along the third direction Z, but also ensures the reliability of the assembly between the insulating seat 4 and the end plate 1.

[0030] As a further preferred embodiment, the end plate 1 has a second hole 12 extending along the third direction Z; the insulating seat 4 also includes a second protrusion 46, which is connected to one side of the seat body 41 along the first direction X. The second protrusion 46 and the first protrusion 45 are spaced apart along the second direction Y, and the second protrusion 46 is inserted into the second hole 12; along the third direction Z, the length of the second protrusion 46 is less than the length of the hole wall of the second hole 12. By engaging the second hole 12 of the end plate 1 with the second protrusion 46, and by allowing the second protrusion 46 to slide relative to the second hole 12 along the third direction Z, the second protrusion 46 assists in positioning the insulating seat 4, improving the installation position accuracy of the insulating seat 4 on the end plate 1.

[0031] The insulating base 4 also includes a reinforcing base 43, which is located on the side of the base body 41 away from the cover body 42. The reinforcing base 43 and the end plate 1 are spaced apart along the first direction X. The first protrusion 45 and the second protrusion 46 are both located on the side of the reinforcing base 43 near the end plate 1. The reinforcing base 43 serves as a bottom reinforcement design for the base body 41, which can improve the local structural strength of the base body 41 and provide a reliable structural foundation for the first protrusion 45 and the second protrusion 46.

[0032] It should be noted that the battery pack also includes fasteners (not shown in the figure). The reinforcing base 43 has a fixing hole 430, the first end 21 has a third hole 210, and the second end 31 has a fourth hole 310. The third hole 210, the fourth hole 310, and the fixing hole 430 are connected along the third direction Z. The fasteners pass through the fixing hole 430, the third hole 210, and the fourth hole 310. The fasteners can be bolts, screws, or rivets. By using the fasteners to fix the first end 21 of the first busbar 2 and the second end 31 of the second busbar 3 to the reinforcing base 43, the purpose of electrically connecting the first end 21 and the second end 31 is achieved.

[0033] The seat 41 includes a base plate 411 and two first side plates 412. The two first side plates 412 are spaced apart on the base plate 411 along the second direction Y, and are respectively connected to the base plate 411. The base plate 411 is mounted on the end plate 1. The base plate 411, the two first side plates 412, and the cover 42 together form an insulating channel 40. The base plate 411 provides insulation between the busbar and the end plate 1, and the two side plates 412 form insulation protection on both sides of the second direction Y. The base plate 411, the two first side plates 412, and the cover 42 form a completely closed insulating channel 40, which serves as a busbar connection part with all-round insulation protection. In addition, the two first side plates 412 have protrusions on the side near the end plate 1. The protrusions of the first side plates 412 are engaged with the side of the end plate 1 along the first direction X. When the insulating seat 4 is slidably adjusted along the third direction Z, the seat 41 can be prevented from shaking relative to the end plate 1.

[0034] Correspondingly, the cover 42 includes a cover plate 421, two second side plates 422, and a first extension 423. The two second side plates 422 are spaced apart along the second direction Y on the side of the cover plate 421 near the bottom plate 411. The first extension 423 is connected to the cover plate 421 on the side of the first direction X. The first extension 423 extends along the third direction Z and is located on the side of the first busbar 2 away from the end plate 1, so that the first extension 423 along the first direction X can partially cover the first busbar 2. The cover plate 421 and the two second side plates 422 provide insulation protection for the upper part of the busbar and both sides in the second direction Y. The first extension 423 is located at one end of the insulation channel 40 in the first direction X. Since the first busbar 2 also has a transition portion near the first end 21, the first extension 423 effectively covers the transition portion leading to the insulating base 4, preventing the conductor of the first busbar 2 near the insulating base 4 from being exposed and causing a short circuit risk.

[0035] Two first side plates 412 are symmetrically arranged. Each first side plate 412 has a positioning hole 413 extending through it along the second direction Y. A groove 414 is provided on the side of the first side plate 412 away from the base plate 411, and the groove 414 communicates with the positioning hole 413. The cover 42 also includes two ear plates 425 and two protrusions 426. The two ear plates 425 are respectively disposed on both sides of the cover plate 421 along the second direction Y, and both ear plates 425 extend along the third direction Z. Each ear plate 425 has a protrusion 426 protruding along the second direction Y. The protrusion 426 is slidably engaged with the groove 414 and inserted into the positioning hole 413. The grooves 414 on both sides of the base 41 provide sliding installation channels for the protrusions 426 on both sides of the cover 42, ensuring that the cover 42 can be accurately installed on the base 41. The protrusions 426 are engaged and limited when inserted into the positioning hole 413, achieving the purpose of detachable assembly between the cover 42 and the base 41.

[0036] This utility model provides an electrical device, which includes a battery pack. The specific embodiments of the battery packs are the same as those in the specific embodiments of the electrical device of this utility model, and will not be repeated here.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery pack having a first direction (X) and a third direction (Z) perpendicular to each other, characterized by, include: The end plate (1) has a first hole (11) extending along the third direction (Z); The first busbar (2) includes a first end (21); The second busbar (3) includes a second end (31), wherein the first end (21) and the second end (31) are located on the same side of the end plate (1) along the third direction (Z); An insulating base (4) includes a base body (41), a cover body (42) and a first protrusion (45). At least a portion of the base body (41) is disposed on the end plate (1). The cover body (42) is connected to the side of the base body (41) away from the end plate (1). The base body (41) and the cover body (42) form an insulating channel (40). The first end (21) and the second end (31) are electrically connected and located within the insulating channel (40). The first protrusion (45) is connected to one side of the seat (41) along the first direction (X), at least a portion of the first protrusion (45) is located in the first hole (11), and the first protrusion (45) is connected to the end plate (1); along the third direction (Z), the length of the first protrusion (45) is less than the length of the hole wall of the first hole (11).

2. The battery pack of claim 1, wherein, The first protrusion (45) is a hook, which includes a body part (451) and a hook part (452). The body part (451) is connected to the seat (41) and the body part (451) passes through the first hole (11) along the first direction (X). The hook part (452) is connected to the side of the body part (451) along the first direction (X) near the end plate (1) and the hook part (452) engages with the end plate (1).

3. The battery pack of claim 1, wherein, The battery pack also has a second direction (Y), the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other, two first protrusions (45) are provided, and the two first protrusions (45) are arranged at intervals along the second direction (Y); two first holes (11) are provided, and the two first holes (11) are arranged at intervals along the second direction (Y), and the two first protrusions (45) are respectively inserted into the two first holes (11).

4. The battery pack of claim 1, wherein, The battery pack also has a second direction (Y), the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other, the end plate (1) has a second hole (12) extending along the third direction (Z); the insulating seat (4) also includes a second protrusion (46), the second protrusion (46) is connected to one side of the seat body (41) along the first direction (X), the second protrusion (46) and the first protrusion (45) are spaced apart along the second direction (Y), the second protrusion (46) is inserted into the second hole (12); along the third direction (Z), the length of the second protrusion (46) is less than the length of the hole wall of the second hole (12).

5. The battery pack of claim 4, wherein, The insulating seat (4) further includes a reinforcing seat (43), which is located on the side of the seat body (41) away from the cover body (42). The reinforcing seat (43) and the end plate (1) are spaced apart along the first direction (X). The first protrusion (45) and the second protrusion (46) are both located on the side of the reinforcing seat (43) close to the end plate (1).

6. The battery pack of claim 5, wherein, The battery pack also includes fasteners. The reinforcing seat (43) has a fixing hole (430), the first end (21) has a third hole (210), and the second end (31) has a fourth hole (310). The third hole (210), the fourth hole (310), and the fixing hole (430) are connected along the third direction (Z). The fastener passes through the fixing hole (430), the third hole (210), and the fourth hole (310).

7. The battery pack of claim 1, wherein, The battery pack also has a second direction (Y), and the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other. The base (41) includes a base plate (411) and two first side plates (412). The two first side plates (412) are spaced apart on the base plate (411) along the second direction (Y), and the two first side plates (412) are respectively connected to the base plate (411). The base plate (411) is disposed on the end plate (1). The base plate (411), the two first side plates (412) and the cover (42) together form the insulating channel (40).

8. The battery pack of claim 7, wherein, The cover (42) includes a cover plate (421), two second side plates (422) and a first extension (423), wherein the two second side plates (422) are spaced apart along the second direction (Y) on the side of the cover plate (421) near the bottom plate (411); The first extension (423) is connected to the cover plate (421) on one side of the first direction (X). The first extension (423) extends along the third direction (Z) and is located on the side of the first busbar (2) away from the end plate (1) so that the first extension (423) can partially cover the first busbar (2) along the first direction (X).

9. The battery pack of claim 8, wherein, Two first side plates (412) are symmetrically arranged. The first side plate (412) has a positioning hole (413) through it along the second direction (Y). The side of the first side plate (412) away from the bottom plate (411) has a groove (414) that communicates with the positioning hole (413). The cover body (42) further comprises two lugs (425) and two protrusions (426), the two lugs (425) are respectively arranged on both sides of the cover plate (421) along the second direction (Y), and the two lugs (425) are arranged in extension along the third direction (Z), and each lug (425) is provided with the protrusion (426) in the second direction (Y), the protrusion (426) is slidably matched with the groove (414), and the protrusion (426) is inserted into the positioning hole (413).

10. An electric device, characterized by A battery pack comprising the battery pack of any one of claims 1 to 9.

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