Battery pack and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and a power utilization device, and the battery pack comprises a box body, an upper cover, batteries, an electrical isolation plate and a bus piece; the upper cover is connected with the box body, and the multiple batteries are arranged in the containing cavity and are vertically and horizontally arranged in the first direction and the second direction; the electrical isolation plate is arranged between the upper cover and the battery in the third direction, a plurality of sinking grooves are formed in the electrical isolation plate at intervals in the second direction, the sinking grooves are formed in the side, close to the upper cover, of the electrical isolation plate, first through holes are formed in the electrical isolation plate, and the first through holes penetrate through the side walls of the sinking grooves in the second direction. The first through holes are communicated with the two adjacent sinking grooves in the second direction; and the confluence piece is arranged in the sinking groove and is connected with the battery. According to the invention, glue can be ensured to permeate into a narrow area between the electrical isolation plate and the battery during glue filling, the glue filling effect is ensured, and the problem that the performance of the whole package is reduced due to incomplete glue filling is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery pack and a power utilization device. BACKGROUND

[0002] In the manufacturing process of the battery pack and the power utilization device, the glue filling is a key process step. The glue filling not only can provide additional mechanical support, but also can enhance the electrical insulation performance inside the battery pack, which helps to improve the stability of the overall structure. However, in the existing battery pack, due to the limited space between the battery and the upper cover, and the complex structure layout, many tortuous and narrow spaces are derived, and the glue filling process often cannot ensure that the glue can be fully and uniformly filled into these hard-to-reach areas, resulting in poor filling effect, which further affects the overall structural strength and reduces the reliability and safety of the battery pack. Therefore, how to improve the design of the battery pack to ensure that the glue can effectively fill the cavity has become an important technical problem to be solved. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a battery pack and a power utilization device to solve the problem that the glue cannot be effectively filled in the area between the battery and the upper cover during glue filling.

[0004] In a first aspect, the present application provides a battery pack having a first direction, a second direction and a third direction intersecting with each other, comprising a box body, an upper cover, a plurality of batteries, an electrical isolation plate and a busbar. The box body is provided with a receiving cavity. The upper cover is connected with the box body and is used to cover the receiving cavity. The plurality of batteries are arranged in the receiving cavity and are arranged longitudinally and transversely along the first direction and the second direction. The electrical isolation plate is arranged between the upper cover and the batteries along the third direction. The electrical isolation plate is provided with a plurality of grooves arranged at intervals along the second direction, and the grooves are arranged on the side of the electrical isolation plate close to the upper cover. The electrical isolation plate is provided with a first through hole penetrating through the side wall of the groove along the second direction, and the first through hole communicates with two adjacent grooves along the second direction.

[0005] Beneficial effects: The grooves and the first through hole on the electrical isolation plate make it easier for the glue to penetrate into the narrow area between the electrical isolation plate and the battery, ensuring the glue filling effect and reducing the problem of performance degradation of the whole pack due to incomplete glue filling. The existence of the electrical isolation plate effectively guarantees the electrical clearance and the creepage distance of the battery pack, prevents the potential risk of electrical short circuit, and improves the electrical safety of the battery pack. The electrical isolation plate can also serve as an auxiliary structure for glue filling, and combined with the glue, it can enhance the structural stability inside the battery pack, so that the battery pack can better withstand external forces.

[0006] In an optional embodiment, the first through-hole has a first opening, a second opening, and a third opening. The first opening is arranged on the side of the electrical isolation plate facing the upper cover, and the first opening penetrates the electrical isolation plate along the third direction. The second opening is arranged on the side wall of the sink along the second direction. The third opening is arranged on the side of the sink away from the upper cover, and the third opening penetrates the side of the electrical isolation plate close to the battery along the third direction. The second opening communicates with the first opening and the third opening.

[0007] Beneficial effect: The three-opening design (first opening, second opening, and third opening) of the first through-hole provides multiple entry paths for glue, ensuring flexibility and uniformity in the glue-filling process. The channel formed by glue-filling helps better conduct and dissipate heat inside the battery pack, improving the heat dissipation efficiency and performance stability of the battery pack.

[0008] In an optional embodiment, the electrical isolation plate is further provided with a second through-hole penetrating the bottom of the sink, and the busbar is provided with a third through-hole penetrating the busbar along the third direction, and the third through-hole is arranged correspondingly with the second through-hole.

[0009] Beneficial effect: The design of the second through-hole and the third through-hole provides additional channels for electrical connection inside the battery pack, enhancing the reliability and stability of the electrical connection. At the same time, it also has the effect of glue leakage and precise positioning during welding.

[0010] In an optional embodiment, the electrical isolation plate includes a limiting portion and a connecting portion. The limiting portion is provided with multiple limiting portions, and each limiting portion is connected to at least two connecting portions. Multiple limiting portions and multiple connecting portions are arranged alternately along the first direction, and the connecting portion extends along the first direction to connect adjacent two limiting portions.

[0011] Beneficial effect: The alternating arrangement of the limiting portion and the connecting portion enhances the overall structural strength of the electrical isolation plate, enabling it to better support and fix the components inside the battery pack. By optimizing the layout, the space utilization inside the battery pack is improved, providing more installation space for the battery and other components.

[0012] In an optional embodiment, the connecting portion includes a recessed portion and a protruding portion, both of which are provided with multiple recessed portions and multiple protruding portions. The recessed direction of the recessed portion extends in the opposite direction of the third direction, and the protruding direction of the protruding portion extends along the third direction. Multiple recessed portions and multiple protruding portions are arranged alternately along the first direction, and the recessed portion or the protruding portion at both ends is connected to the limiting portion.

[0013] Beneficial effects: It can assist in glue filling, so that the glue can pass through the gap between the recessed part and the protruding part, and it can strengthen the connection strength. The alternating arrangement of the recessed part and the protruding part enhances the impact resistance of the electrical isolation plate, so that it can better resist external impact and vibration. By optimizing the surface structure of the electrical isolation plate, the heat dissipation condition inside the battery pack is improved, and the heat dissipation efficiency is improved.

[0014] In an alternative embodiment, a plurality of said grooves are provided, and the plurality of said grooves are arranged on the limiting part in the second direction, and the plurality of said grooves are arranged in groups of two in the second direction, and the first through holes on the two said grooves in the same group are arranged in the first direction, and the two said grooves are communicated with each other through the first through hole.

[0015] Beneficial effects: Multiple grooves are arranged in the second direction and communicated with each other through the first through hole, which provides more access paths and channels for the glue, ensuring the uniformity and integrity of the glue filling process. By connecting multiple grooves and first through holes, a more efficient heat dissipation channel is formed, improving the heat dissipation performance and stability of the battery pack.

[0016] In an alternative embodiment, the limiting part and the connecting part are configured as an integrated structure.

[0017] Beneficial effects: The limiting part and the connecting part are configured as an integrated structure, which simplifies the manufacturing and assembly process of the electrical isolation plate, reduces the manufacturing cost and time. At the same time, the integrated structure enhances the overall stability and reliability of the electrical isolation plate, so that it can better adapt to various working environments and conditions.

[0018] In an alternative embodiment, a fifth through hole is provided through the side wall of the groove in the first direction, and a fourth through hole is formed by the two limiting parts adjacent in the first direction and the two connecting parts adjacent in the second direction, the fourth through hole penetrates the electrical isolation plate in the third direction, and the third through hole and the fourth through hole are communicated.

[0019] Beneficial effects: The design of the third through hole and the fourth through hole provides additional channels and paths for glue filling and heat dissipation inside the battery pack, improving the efficiency and effect of glue filling and heat dissipation. This design makes the manufacturing process of the battery pack more flexible and diversified, which can be adjusted and optimized according to different needs.

[0020] In an alternative embodiment, a positioning column is connected to the groove bottom of the groove, and the current collecting piece is provided with a positioning hole matched with the positioning column.

[0021] Beneficial effects: The design of the positioning column and the positioning hole provides accurate positioning and fixing for the installation of the busbar, improves the installation accuracy and reliability. This design makes the installation and disassembly process of the busbar simpler and more convenient, reduces the maintenance difficulty and time cost.

[0022] In a second aspect, the application also provides a battery pack.

[0023] Because the battery pack is included in the power utilization device, it has the same effects as the battery pack, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0025] Figure 1 A structural schematic diagram of a battery pack in an embodiment of the present application;

[0026] Figure 2 A structural schematic diagram of a battery pack in an embodiment of the present application;

[0027] Figure 3 A structural schematic diagram of a battery pack in an embodiment of the present application; Figure 2 A local enlarged schematic diagram of A in the middle;

[0028] Figure 4 A structural schematic diagram of a battery pack in an embodiment of the present application;

[0029] Figure 5 A structural schematic diagram of a battery pack in an embodiment of the present application;

[0030] Figure 6 A structural schematic diagram of a battery pack in an embodiment of the present application;

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1, box; 2, upper cover; 3, battery; 4, electrical isolation plate; 401, limiting part; 402, connecting part; 4021, recessed part; 4022, protruding part; 5, sink; 6, first through hole; 601, first opening; 602, second opening; 603, third opening; 7, second through hole; 8, busbar; 9, third through hole; 10, positioning column; 11, positioning hole; X, first direction; Y, second direction; Z, third direction; 12, containing cavity; 13, fifth through hole; 14, fourth through hole. DETAILED DESCRIPTION

[0033] So that the purposes, technical solutions and advantages of the embodiments of the present application are more apparent, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] The embodiments of the present application are described below with reference to the drawings. Figures 1 to 6 The embodiments of the present application are described below with reference to the drawings.

[0035] According to the embodiments of the present application, in one aspect, a battery 3 package is provided, having a first direction X, a second direction Y and a third direction Z intersecting with each other, the battery 3 package comprising a box body 1, an upper cover 2, a battery 3, an electrical isolation plate 4 and a current collecting piece 8. The box body 1 is provided with a containing cavity 12. The upper cover 2 is connected with the box body 1 and is used for covering the containing cavity 12. The battery 3 is provided in plurality, and the plurality of batteries 3 are arranged in longitudinal and transverse arrangement along the first direction X and the second direction Y in the containing cavity 12. The electrical isolation plate 4 is arranged between the upper cover 2 and the battery 3 along the third direction Z. The electrical isolation plate 4 is provided with a plurality of grooves 5 spaced apart along the second direction Y. The grooves 5 are arranged on the side of the electrical isolation plate 4 close to the upper cover 2. The electrical isolation plate 4 is provided with a first through hole 6 penetrating through the side wall of the groove 5 along the second direction Y, and the first through hole 6 communicates with the adjacent two grooves 5 along the second direction Y. The current collecting piece 8 is arranged in the groove 5 and connected with the battery 3, and the current collecting piece 8 serves to connect the battery 3.

[0036] It can be understood that the first through hole 6 is arranged to leak glue during glue pouring, so that the glue above the electrical isolation plate 4 can be introduced below the electrical isolation plate 4, so that the glue can be filled between the battery and the upper cover 2, thereby ensuring that the glue can be filled comprehensively. At the same time, the current collecting piece 8 connects the positive and negative electrodes of the adjacent two batteries 3, thereby realizing the circulation of current.

[0037] It should be noted that the groove 5 arranged on the electrical isolation plate 4 is actually a recess on the plate-shaped electrical isolation plate 4, that is, one side of the electrical isolation plate 4 is recessed, and the other opposite side is protruded. The first through hole 6 is arranged on the groove 5, that is, it can penetrate through the electrical isolation plate 4.

[0038] In the embodiment, the sink 5 and the first through hole 6 on the electrical isolation plate 4 are designed so that the glue can more easily penetrate into the narrow area between the electrical isolation plate 4 and the battery 3, ensuring the filling effect of the glue, and reducing the problem of performance degradation of the whole package due to incomplete glue filling. The presence of the electrical isolation plate 4 effectively ensures the electrical clearance and creepage distance of the battery pack, preventing potential electrical short circuit risk and improving the electrical safety of the battery 3 pack. The electrical isolation plate 4 can also serve as an auxiliary structure for glue filling, combined with glue to enhance the structural stability of the battery pack, so that the battery pack can better withstand external forces.

[0039] Referring to Figure 3 In some embodiments, the first through hole 6 has a first opening 601, a second opening 602, and a third opening 603. The first opening 601 is provided on the side of the electrical isolation plate 4 facing the upper cover 2, and the first opening 601 penetrates the electrical isolation plate 4 along the third direction Z. The second opening 602 is provided on the side wall of the sink 5 along the second direction Y. The third opening 603 is provided on the side of the sink 5 away from the upper cover 2, and the third opening 603 penetrates the side of the electrical isolation plate 4 close to the battery 3 along the third direction Z. Among them, the second opening 602 can communicate the first opening 601 and the third opening 603.

[0040] It can be understood that the provision of the first opening 601, the second opening 602, and the third opening 603 can make the electrical isolation plate 4 have notches in the second direction Y and the third direction Z, so as to enhance the flowability of the glue.

[0041] Alternatively, the first opening 601, the second opening 602, and the third opening 603 can extend along the first direction X to increase the area, and the first opening 601, the second opening 602, and the third opening 603 can be provided as notches with equal length along the first direction X and flush with each other, which can facilitate the opening of the first through hole 6.

[0042] Alternatively, the first opening 601, the second opening 602, and the third opening 603 can be independently provided without the need for mutual communication.

[0043] In the embodiment, the three opening designs (the first opening 601, the second opening 602, and the third opening 603) of the first through hole 6 provide multiple entry paths for the glue, ensuring the flexibility and uniformity of the glue filling process. The channel formed by the glue filling helps the heat inside the battery 3 pack to be better conducted and dissipated, improving the heat dissipation efficiency and performance stability of the battery 3 pack.

[0044] In some embodiments, the electrical isolation plate 4 is also provided with a second through hole 7 penetrating the bottom of the sink 5, and the busbar 8 is provided with a third through hole 9 penetrating the busbar 8 along the third direction Z, and the third through hole 9 is provided corresponding to the second through hole 7.

[0045] Optionally, the second through hole 7 can be arranged at any position of the sink groove 5 away from the upper cover 2 (i.e. the bottom of the sink groove 5), as long as the second through hole 7 and the third through hole 9 are arranged in a corresponding position.

[0046] Optionally, the cross-sectional shape of the second through hole 7 can be one of a circle, a circle-like shape, and a polygon.

[0047] Optionally, multiple second through holes 7 can be arranged.

[0048] In this embodiment, the design of the second through hole 7 and the third through hole 9 provides an additional channel for electrical connection inside the battery 3 pack, enhancing the reliability and stability of the electrical connection. At the same time, it also has the effect of glue leakage, and also has the effect of precise positioning during welding.

[0049] In some embodiments, the electrical isolation plate 4 includes a limiting portion 401 and a connecting portion 402. The limiting portion 401 is provided with multiple limiting portions 401, and each limiting portion 401 is connected with at least two connecting portions 402. The multiple limiting portions 401 and the multiple connecting portions 402 are arranged alternately along the first direction X, and the connecting portion 402 extends to connect the adjacent two limiting portions 401 along the first direction X.

[0050] Optionally, the two opposite sides of the limiting portion 401 can be respectively provided with an equal number of connecting portions 402, and the multiple connecting portions 402 located on the same side of the limiting portion 401 can be arranged at equal intervals along the second direction Y.

[0051] In this embodiment, the alternating arrangement of the limiting portion 401 and the connecting portion 402 enhances the overall structural strength of the electrical isolation plate 4, making it better support and fix the components inside the battery 3 pack. Through optimized layout, the space utilization inside the battery 3 pack is improved, providing more installation space for the battery 3 and other components.

[0052] Referring to Figure 6 In some embodiments, the connecting portion 402 includes a recessed portion 4021 and a protruding portion 4022, both of which are provided with multiple recessed portions 4021 and multiple protruding portions 4022. The recessed direction of the recessed portion 4021 extends in the opposite direction of the third direction Z, and the protruding direction of the protruding portion 4022 extends along the third direction Z. The multiple recessed portions 4021 and the multiple protruding portions 4022 are arranged alternately along the first direction X, and the recessed portion 4021 or the protruding portion 4022 at both ends is connected with the limiting portion 401.

[0053] In this embodiment, the recessed portion 4021 and the protruding portion 4022 can assist in the glue filling process, allowing the glue to pass through the gap between the recessed portion 4021 and the protruding portion 4022, thereby enhancing the connection strength. The alternating arrangement of the recessed portion 4021 and the protruding portion 4022 enhances the impact resistance of the electrical isolation plate 4, making it better able to withstand external impact and vibration. By optimizing the surface structure of the electrical isolation plate 4, the heat dissipation conditions inside the battery 3 pack are improved, and the heat dissipation efficiency is increased.

[0054] In some embodiments, a plurality of grooves 5 are provided, and the plurality of grooves 5 are arranged on the limiting portion 401 in the second direction Y. The plurality of grooves 5 are arranged in pairs in the second direction Y, and the first through holes 6 on the two grooves 5 in the same group are arranged in the first direction X. The two grooves 5 are in communication with each other through the first through holes 6.

[0055] It can be understood that the first through holes 6 on the two grooves 5 in the same group are arranged in a staggered manner, which can ensure the connection strength between the two grooves 5, while reducing the resistance of the glue flowing from the top of the electrical isolation plate 4 to the bottom, and avoiding the glue collision between the two first through holes 6.

[0056] In this embodiment, the plurality of grooves 5 are arranged in the second direction Y and are in communication with each other through the first through holes 6, which provides more entry paths and channels for the glue, ensuring the uniformity and integrity of the glue filling process. By connecting the plurality of grooves 5 and the first through holes 6, a more efficient heat dissipation channel is formed, which improves the heat dissipation performance and stability of the battery 3 pack.

[0057] In some embodiments, the limiting portion 401 and the connecting portion 402 are configured as an integrated structure.

[0058] In this embodiment, the limiting portion 401 and the connecting portion 402 are configured as an integrated structure, which simplifies the manufacturing and assembly process of the electrical isolation plate 4, reduces the manufacturing cost and time. At the same time, the integrated structure enhances the overall stability and reliability of the electrical isolation plate 4, making it better able to adapt to various working environments and conditions.

[0059] In some embodiments, a fifth through hole 13 is provided through the sidewall of the groove 5 in the first direction X. Two limiting portions 401 adjacent in the first direction X and two connecting portions 402 adjacent in the second direction Y form a fourth through hole 14, which penetrates the electrical isolation plate 4 in the third direction Z, and the fifth through hole 13 is in communication with the fourth through hole 14.

[0060] Optionally, the fifth through hole 13 can be configured in the same structure as the first through hole 6.

[0061] In this embodiment, the design of the fifth through hole 13 and the fourth through hole 14 provides additional channels and paths for glue filling and heat dissipation inside the battery 3 pack, improving the efficiency and effectiveness of glue filling and heat dissipation. This design makes the manufacturing process of the battery 3 pack more flexible and diversified, and can be adjusted and optimized according to different needs.

[0062] In some embodiments, the groove bottom of the sink 5 is connected with a positioning column 10, and the current collecting member 8 is provided with a positioning hole 11 matched with the positioning column 10.

[0063] In this embodiment, the design of the positioning column 10 and the positioning hole 11 provides precise positioning and fixing for the installation of the current collecting member 8, improving the installation precision and reliability. This design makes the installation and disassembly process of the current collecting member 8 more simple and convenient, reducing the maintenance difficulty and time cost.

[0064] According to the embodiments of the present application, in another aspect, a kind of electric device is also provided, comprising the above-mentioned battery 3 pack.

[0065] Because the electric device includes the battery 3 pack, it has the same effect as the battery 3 pack, which will not be repeated here.

[0066] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A battery pack having a first direction (X), a second direction (Y), and a third direction (Z) that intersect two by two, characterized in that, The utility model relates to a battery pack, including: A box (1) is provided with containing cavity (12); Upper cover (2) is connected with the box (1), and is used for covering containing cavity (12); A plurality of batteries (3) are provided, and the plurality of batteries (3) are arranged in the containing cavity (12), and the plurality of batteries (3) are arranged along the first direction (X) and the second direction (Y) longitudinally and transversely; Electrically isolated board (4) is arranged between the upper cover (2) and the battery (3) along the third direction (Z), and a plurality of grooves (5) are arranged on the electrically isolated board (4) along the second direction (Y), the groove (5) is arranged on the side of the electrically isolated board (4) close to the upper cover (2), the electrically isolated board (4) is provided with first through -hole (6), the first through -hole (6) penetrates the side wall of the groove (5) along the second direction (Y), and the first through -hole (6) is communicated with adjacent two grooves (5) along the second direction (Y); The busbar (8) is arranged in the groove (5) and is connected with the battery (3).

2. The battery pack of claim 1, wherein, The first through -hole (6) has: First opening (601) is arranged on the side of the electrically isolated board (4) towards the upper cover (2), and the first opening (601) penetrates the electrically isolated board (4) along the third direction (Z); Second opening (602) is arranged on the side wall of the groove (5) along the second direction (Y); Third opening (603) is arranged on the side of the groove (5) away from the upper cover (2), and the third opening (603) penetrates the side of the electrically isolated board (4) close to the battery (3) along the third direction (Z); Wherein, the second opening (602) is communicated with the first opening (601) and third opening (603).

3. The battery pack of claim 1, wherein, The electrically isolated board (4) is further provided with second through -hole (7), the second through -hole (7) penetrates the groove bottom of the groove (5), the busbar (8) is provided with third through -hole (9), the third through -hole (9) penetrates the busbar (8) along the third direction (Z), and the third through -hole (9) is arranged correspondingly with the second through -hole (7).

4. The battery pack of claim 1, wherein, The electrically isolated board (4) includes: Limiting portion (401) and connecting portion (402), the limiting portion (401) is provided with a plurality of, and each limiting portion (401) is connected with at least two connecting portions (402), a plurality of connecting portions (402) and a plurality of limiting portions (401) are alternately arranged along the first direction (X), and the connecting portion (402) extends and connects adjacent two limiting portions (401) along the first direction (X), a plurality of grooves (5) are arranged on the limiting portion (401) along the second direction (Y).

5. The battery pack of claim 4, wherein, The connecting portion (402) includes: A plurality of recesses (4021) and protrusions (4022) are provided, the recesses (4021) are arranged in the opposite direction of the third direction (Z), the protrusions (4022) are arranged in the third direction (Z), the recesses (4021) and the protrusions (4022) are alternately arranged in the first direction (X), and the recesses (4021) or the protrusions (4022) at both ends are connected with the limiting portion (401).

6. The battery pack of claim 4, wherein: A plurality of the grooves (5) are arranged in pairs along the second direction (Y), the first through holes (6) on the two grooves (5) in the same pair are arranged at intervals along the first direction (X), and the two grooves (5) are connected with each other through the first through holes (6).

7. The battery pack of claim 4, wherein: The limiting portion (401) and the connecting portion (402) are configured as an integrated structure.

8. The battery pack of claim 5, wherein: The fifth through hole (13) is arranged through the side wall of the groove (5) along the first direction (X), the fourth through hole (14) is formed by the two limiting portions (401) adjacent along the first direction (X) and the two connecting portions (402) adjacent along the second direction (Y), the fourth through hole (14) penetrates the electrically isolated plate (4) along the third direction (Z), and the fifth through hole (13) is communicated with the fourth through hole (14).

9. The battery pack of claim 1, wherein: The groove (5) is connected with a positioning column (10), and the busbar (8) is provided with a positioning hole (11) matched with the positioning column (10).

10. An electrical device, characterized by The battery pack of any one of claims 1 to 9. The battery pack of any one of claims 1 to 9.

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