Transmission connection assembly and battery pack

Abstract

The utility model relates to the technical field of energy storage equipment production and manufacturing, in particular to a transmission connection assembly which comprises a base, a communication connecting piece and a plurality of transmission connecting pieces. Wherein the base can be detachably connected to a shell of the battery pack, the communication connecting piece is arranged on the base, the communication connecting piece is used for transmitting communication information of the battery pack, and the transmission connecting pieces are all arranged on the base. The utility model further provides a battery pack which comprises a shell and the transmission connection assembly, and the transmission connection assembly is detachably connected to the shell. According to the transmission connection assembly and the battery pack, when the communication connecting piece or a certain transmission connecting piece breaks down and needs to be overhauled or replaced, the transmission connection assembly can be directly detached from the battery pack shell, convenience is brought to overhaul operation, the transmission connection assembly can also be directly replaced, the maintenance efficiency can be improved, and the maintenance cost is reduced. And compared with the replacement of the upper cover of the battery pack shell in the prior art, the maintenance cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of production and manufacturing of energy storage devices, in particular to a transmission connection assembly and a battery pack. Background Art

[0002] The battery pack is provided with a connection assembly for connecting an electrical device to supply power to it or for transmitting information such as the temperature and remaining power of the battery pack. The connection assembly of the battery pack includes a plurality of connecting pieces. In the prior art, the plurality of connecting pieces are integrally formed on the upper cover of the battery pack housing one by one. Since the upper cover is made of plastic, in order to ensure the firm connection of the connecting pieces, the plurality of connecting pieces are integrally injection-molded with the upper cover, making it very difficult to disassemble the connecting pieces from the upper cover. Once a connecting piece is damaged, the upper cover of the battery pack housing needs to be replaced as a whole, resulting in reduced maintenance efficiency and too high maintenance cost. Summary of the Utility Model

[0003] An object of the utility model is to provide a transmission connection assembly, which can reduce the difficulty of disassembling and replacing the connecting pieces and reduce the maintenance cost.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] Provide a transmission connection assembly, including:

[0006] A base, which can be detachably connected to the housing of the battery pack;

[0007] A communication connecting piece, which is arranged on the base and is used for transmitting the communication information of the battery pack;

[0008] A plurality of transmission connecting pieces, all of which are arranged on the base and are used for transmitting electricity.

[0009] Optionally, the base is provided with reinforcing ribs, the reinforcing ribs include circumferential ribs and radial ribs, the circumferential ribs include a plurality of concentrically arranged rings or arcs, and the radial ribs extend along the radial direction of the rings or arcs.

[0010] Optionally, each transmission connecting piece has a power transmission external plug, which is used for screwing connection with an electrical device, and the axial direction of the circumferential rib is parallel to the axial direction of the screwing direction of the power transmission external plug.

[0011] Optionally, the reinforcing ribs include first reinforcing ribs, the bottom plate of the base includes a first surface and a second surface arranged oppositely, the first reinforcing ribs are arranged on the first surface, and a plurality of the power transmission external plugs are all arranged on the second surface.

[0012] Optionally, the reinforcing rib includes a second reinforcing rib, the base includes an extension section, the power transmission inner connecting plug of the transmission connecting member is connected to the extension section, and the second reinforcing rib is disposed on the extension section.

[0013] Optionally, the plurality of transmission connecting members are connecting members of different voltages.

[0014] Optionally, the plurality of transmission connecting members each include a power transmission external connecting plug, a transmission connecting portion, and a power transmission inner connecting plug that are connected in sequence, and the plurality of transmission connecting portions are spaced apart and embedded in the base;

[0015] And / or, the communication connecting member includes a communication external connecting plug, a communication connecting portion, and a communication inner connecting plug that are connected in sequence, and the communication connecting portion is embedded in the base.

[0016] Optionally, the base includes a plurality of partition plates, and a partition plate is disposed between the power transmission external connecting plugs of any two adjacent transmission connecting members to block the plurality of power transmission external connecting plugs.

[0017] Optionally, the cross-section of the partition plate is C-shaped, and some adjacent partition plates have a common plate.

[0018] Optionally, each transmission connecting member includes a power transmission external connecting plug, each power transmission external connecting plug is provided with an anti-misoperation structure, each anti-misoperation structure has two notches extending radially along the power transmission external connecting plug, and the angles between the two notches of any two anti-misoperation structures are different.

[0019] Another object of the present invention is to provide a battery pack, which can reduce the difficulty of disassembling and replacing the connecting member and reduce the maintenance cost.

[0020] To achieve this purpose, the present invention adopts the following technical solutions:

[0021] Provide a battery pack, including a housing and the above-mentioned transmission connection assembly, and the transmission connection assembly is detachably connected to the housing.

[0022] Optionally, the base is located inside the housing, an avoidance hole is formed in the housing, and the communication external connecting plug of the communication connecting member and the power transmission external connecting plugs of the plurality of transmission connecting members all partially pass through the avoidance hole.

[0023] The beneficial effects of the present invention:

[0024] The present utility model provides a transmission connection assembly, which includes a base, a communication connector, and a plurality of transmission connectors. Among them, the base can be detachably connected to the housing of the battery pack. The communication connector is arranged on the base and is used for transmitting the communication information of the battery pack. The plurality of transmission connectors are all arranged on the base and are used for transmitting electricity. That is, the communication connector and the plurality of transmission connectors are not integrated on the housing of the battery pack one by one, but are first integrated on the base to form a transmission connection assembly, and then detachably connected to the housing of the battery pack. When the communication connector or a certain transmission connector fails and needs to be repaired or replaced, the transmission connection assembly can be directly detached from the battery pack housing, which brings convenience to the repair operation, and the transmission connection assembly can also be directly replaced, which can not only improve the maintenance efficiency, but also reduce the maintenance cost compared with replacing the upper cover of the battery pack housing in the prior art.

[0025] The present utility model also provides a battery pack, which includes a housing and the above-mentioned transmission connection assembly, and the transmission connection assembly is detachably connected to the housing. When the communication connector or a certain transmission connector of this battery pack fails and needs to be repaired or replaced, the transmission connection assembly can be directly detached from the battery pack housing, which brings convenience to the repair operation, and the transmission connection assembly can also be directly replaced, which can not only improve the maintenance efficiency, but also reduce the maintenance cost compared with replacing the upper cover of the battery pack housing in the prior art. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the transmission connection assembly provided by the embodiment of the present utility model from the first perspective;

[0027] Figure 2 is a schematic structural diagram of the transmission connection assembly provided by the embodiment of the present utility model from the second perspective;

[0028] Figure 3 is a schematic structural diagram of the transmission connection assembly provided by the embodiment of the present utility model from the third perspective;

[0029] Figure 4 is Figure 3 an enlarged view of part A in

[0030] Figure 5 is a schematic structural diagram of the transmission connection assembly provided by the embodiment of the present utility model from the fourth perspective;

[0031] Figure 6 is a schematic diagram of a part of the structure of the battery pack provided by the embodiment of the present utility model from the first perspective;

[0032] Figure 7 is a schematic diagram of a part of the structure of the battery pack provided by the embodiment of the present utility model from the second perspective.

[0033] In the figure:

[0034] 1. Base; 11. Bottom plate; 111. First reinforcing rib; 1111. Circumferential rib; 1112. Radial rib; 12. Extension section; 121. Second reinforcing rib; 13. Partition board; 131. Shared plate; 132. Connecting curved surface plate; 133. Protective plate; 14. Side plate;

[0035] 2. Communication connector; 21. Communication external plug; 22. Communication internal plug;

[0036] 3. Transmission connector; 31. Transmission external plug; 311. Pole column; 312. Anti-fooling structure; 3121. Notch; 32. Transmission internal plug; 301. 12V positive connection piece; 302. 12V negative connection piece; 303. 48V positive connection piece; 304. 48V negative connection piece; 305. 48V positive pre-charge connection piece;

[0037] 100. Transmission connection assembly; 200. Housing. Detailed implementation mode

[0038] The technical solution of the present utility model will be further described below in conjunction with the drawings and the implementation mode. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all of them.

[0039] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0040] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below" and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0041] Such asFigures 1 - 5 As shown in the figure, the transmission connection assembly 100 of this embodiment includes a base 1, a communication connector 2, and a plurality of transmission connectors 3. Among them, the base 1 can be detachably connected to the housing 200 of the battery pack. Optionally, the base 1 is provided with assembly holes, and the fixing member can be connected to the housing 200 by passing through the assembly holes. The communication connector 2 is arranged on the base 1. The communication connector 2 is used to transmit the communication information of the battery pack. A plurality of transmission connectors 3 are all arranged on the base 1. The transmission connectors 3 are used to transmit electricity. That is, the communication connector 2 and the plurality of transmission connectors 3 are not integrated on the housing 200 of the battery pack one by one, but are first integrated on the base 1 to form the transmission connection assembly 100, and then detachably connected to the housing 200 of the battery pack. When the communication connector 2 or a certain transmission connector 3 fails and needs to be repaired or replaced, the transmission connection assembly 100 can be directly detached from the battery pack housing 200, which brings convenience to the repair operation. The transmission connection assembly 100 can also be directly replaced, which can not only improve the maintenance efficiency, but also reduce the maintenance cost compared with replacing the upper cover of the battery pack housing 200 in the prior art.

[0042] Optionally, each of the plurality of transmission connectors 3 includes a power transmission external plug 31, a transmission connection part, and a power transmission internal plug 32 that are connected in sequence. The plurality of transmission connection parts are embedded in the base 1 at intervals to ensure the firm connection between the transmission connector 3 and the base 1.

[0043] Optionally, the communication connector 2 includes a communication external plug 21, a communication connection part, and a communication internal plug 22 that are connected in sequence. The communication connection part is embedded in the base 1 to ensure the firm connection between the communication connector 2 and the base 1. Optionally, the communication external plug 21 is a communication PIN pin.

[0044] Optionally, the base 1 is an injection molded part, so that the transmission connection part and the communication connection part can be directly fixed and formed in the base 1, and the insulating material of the base 1 can further ensure the insulation between the communication connection part and the plurality of transmission connection parts.

[0045] Since each connector will inevitably be stressed when cooperating and docking with the outside world, in order to improve the structural strength of the base 1, optionally, the power transmission external plugs 31 of the plurality of transmission connectors 3 are all connected to the base 1. The base 1 is provided with reinforcing ribs. The reinforcing ribs include circumferential ribs 1111 and radial ribs 1112. The circumferential ribs 1111 include a plurality of concentrically arranged rings or arcs, and the radial ribs 1112 extend along the radial direction of the ring or arc. By providing the reinforcing ribs, the overall structural strength of the transmission connection assembly 100 can be improved, and it can pass the rigorous vibration and impact tests.

[0046] Optionally, the power transmission external plug 31 is used for screwing connection with the electrical equipment, that is, it will be subjected to torsion when docking with the electrical equipment. The axial direction of the circumferential rib 1111 is parallel to the axial direction of the screwing direction of the power transmission external plug 31, that is, the straight line direction around which the screwing occurs. The setting of the circumferential rib 1111 can resist torsion and ensure the structural strength of the base 1 along the circumferential direction of the ring or arc. Optionally, the power transmission external plug 31 has external threads.

[0047] Optionally, in this embodiment, the base 1 includes a bottom plate 11, an extension section 12 and a side plate 14. Optionally, the extension section 12 extends along the plane where the bottom plate 11 is located to one side of the bottom plate 11, and the side plate 14 is located on one side of the bottom plate 11 and is perpendicular to the bottom plate 11. Optionally, the reinforcing rib includes a first reinforcing rib 111. The bottom plate 11 of the base 1 includes a first surface and a second surface arranged oppositely. The first reinforcing rib 111 is arranged on the first surface, and a plurality of power transmission external plugs 31 are all connected to the second surface, so as to minimize the size of the base 1 and reduce its occupied space on the basis of ensuring the structural strength.

[0048] Optionally, the reinforcing rib includes a second reinforcing rib 121. The base 1 includes an extension section 12. The power transmission internal plug 32 of the transmission connector 3 is connected to the extension section 12. The second reinforcing rib 121 is arranged on the extension section 12. The circumferential rib 1111 of the second reinforcing rib 121 is concentrically arranged with the circumferential rib 1111 of the first reinforcing rib 111 to further improve the structural strength. In this embodiment, only the power transmission internal plug 32 of one transmission connector 3 is arranged at the extension section 12, and the rest are arranged on the side plate 14 of the base 1. Of course, in other embodiments, the positions of the respective power transmission internal plugs 32 can be adjusted according to the positions of the components docked with the power transmission internal plugs 32 of the respective transmission connectors 3, which is not limited herein.

[0049] Optionally, in this embodiment, the plurality of transmission connectors 3 are connectors with different voltages. Optionally, the plurality of transmission connectors 3 include a 12V positive connector 301, a 12V negative connector 302, a 48V positive connector 303, a 48V negative connector 304, and a 48V positive pre-charge connector 305, so that external transmission of multiple different voltages can be achieved through a single transmission connection assembly 100. In this embodiment, there are five transmission connectors 3 as described above. Of course, in other embodiments, the number of transmission connectors 3 and the transmission voltages can also be adjusted according to needs.

[0050] Optionally, the power transmission external plugs 31 of the plurality of transmission connectors 3 are all arranged on the bottom plate 11 and are arranged in a row, and the communication external plugs 21 are also arranged in a row with the plurality of transmission connectors 3. Optionally, the power transmission internal plugs 32 of the plurality of transmission connectors 3 located at the side plate 14 are also arranged in a row, and the formed surface is parallel to the surface formed by the plurality of power transmission external plugs 31. Optionally, the communication internal plug 22 is arranged on the side plate 14, and the communication connection part is partially located inside the bottom plate 11 and partially located inside the side plate 14. Of course, in other embodiments, the positions of the respective external plugs and internal plugs can also be adjusted according to the actual structure of the battery pack.

[0051] To prevent short circuits between the plurality of power transmission external plugs 31 and to protect the safety of the user, optionally, the base 1 includes a plurality of partition plates 13, and a partition plate 13 is provided between any two adjacent power transmission external plugs 31 of the transmission connectors 3 to separate the plurality of power transmission external plugs 31.

[0052] Optionally, the extending direction of the partition plate 13 is parallel to the length direction of the power transmission external plug 31, and the cross-section of the partition plate 13 perpendicular to its extending direction is C-shaped, that is, the opening of the partition plate 13 is located on one side of the power transmission external plug 31, which is convenient for the installation, docking and disassembly of the electrical equipment. Some adjacent two partition plates 13 have a shared plate to save materials and space. In this embodiment, three partition plates 13 are connected to form a first partition plate group, and the other two partition plates 13 are connected to form a second partition plate group. Among them, the two partition plates 13 at both ends of the first partition plate group each include a protection plate 133, a connecting curved surface plate 132 and a shared plate connected in sequence, and the middle partition plate 13 includes a shared plate, a connecting curved surface plate 132 and another shared plate connected in sequence. The second partition plate group includes a protection plate 133, a connecting curved surface plate 132, a shared plate, a connecting curved surface plate 132 and a protection plate 133 connected in sequence, that is, the cross-section of the second partition plate group is similar to a W shape.

[0053] Optionally, the bottom plate 11, the extension section 12, the side plate 14 and the partition plate 13 are all integrally formed by injection molding to ensure the structural strength of each part and the connection strength between them.

[0054] To prevent the user from inserting the power transmission external plug 31 incorrectly, optionally, each transmission connector 3 includes a power transmission external plug 31, and each power transmission external plug 31 is provided with a foolproof structure 312. Optionally, in this embodiment, the power transmission external plug 31 includes a pole 311 and a foolproof structure 312. The foolproof structure 312 is specifically located at the bottom of the power transmission external plug 31, that is, below the pole 311. Optionally, each foolproof structure 312 has two notches 3121 extending radially along the power transmission external plug 31, and the angles between the two notches 3121 of any two foolproof structures 312 are different, that is, the angles between the two notches 3121 of multiple foolproof structures 312 are different from each other. Optionally, the foolproof structure 312 includes a bottom annular groove, and the above two notches 3121 are arranged to extend radially outward along the bottom annular groove. The bottom annular groove is coaxial with the pole 311, and the angle between the two notches 3121 is preset, that is, the preset angles between the two notches 3121 of multiple power transmission external plugs 31 are different.

[0055] As Figure 4 shown, in this embodiment, corresponding to the 12V positive connector 301, 12V negative connector 302, 48V positive connector 303, 48V positive pre-charge connector 305, and 48V negative connector 304, the angles between the two notches 3121 are 120°, 70°, 115°, 55°, and 130° respectively, which can avoid incorrect assembly of nuts or wire harnesses and facilitate the connection between the battery pack and the electrical equipment.

[0056] As Figures 6 - 7 shown, this embodiment also provides a battery pack, which includes a housing 200 and the above-mentioned transmission connection assembly 100. The transmission connection assembly 100 is detachably connected to the housing 200.

[0057] Optionally, the base 1 is located inside the housing 200. The housing 200 is provided with an avoidance hole, and the avoidance hole is rectangular to correspond to the positions of the power transmission external plugs 31 of multiple transmission connectors 3 and the communication external plugs 21 of the communication connectors 2, so that the communication external plugs 21 and multiple power transmission external plugs 31 all partially pass through the avoidance hole and are located outside the housing 200 of the battery pack to facilitate docking with electrical equipment and the like.

[0058] Optionally, in order to reserve space for multiple power transmission external plugs 31 and communication external plugs 21 to dock with the outside world outside the housing 200, the wall surface of the housing 200 where the avoidance hole is provided sinks, so that the thickness of the housing 200 at this place is less than the thickness of the housing 200 at other positions, which can facilitate the mating and docking of multiple power transmission external plugs 31 and communication external plugs 21 with the outside world.

[0059] When the communication connector 2 or a certain transmission connector 3 of the battery pack fails and needs to be repaired or replaced, the transmission connection assembly 100 can be directly detached from the battery pack housing 200, which brings convenience to the repair operation. The transmission connection assembly 100 can also be directly replaced, which not only improves the maintenance efficiency, but also reduces the maintenance cost compared with replacing the upper cover of the battery pack housing 200 in the prior art.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A transmission connection assembly, characterized in that: include: A base (1), the base (1) being detachably connected to a housing (200) of a battery pack; A communication connector (2), the communication connector (2) being arranged on the base (1), and the communication connector (2) being used for transmitting communication information of the battery pack; A plurality of transmission connecting members (3), wherein the plurality of transmission connecting members (3) are all arranged on the base (1), and the transmission connecting members (3) are used for transmitting electricity.

2. The transmission connection assembly according to claim 1, characterized in that: The base (1) has reinforcing ribs, the reinforcing ribs comprising circumferential ribs (1111) and radial ribs (1112), the circumferential ribs (1111) comprising a plurality of concentrically arranged circular rings or circular arcs, and the radial ribs (1112) extending radially along the circular rings or circular arcs.

3. The transmission connection assembly according to claim 2, characterized in that: Each transmission connection piece (3) has an external power transmission plug (31), the external power transmission plug (31) being used for being screwed to an electrical device, and the axial direction of the circumferential rib (1111) is parallel to the axial direction of the screwing direction of the external power transmission plug (31).

4. The transmission connection assembly according to claim 3, characterized in that: The reinforcing ribs also include first reinforcing ribs (111), the bottom plate (11) of the base (1) includes a first surface and a second surface that are arranged opposite to each other, the first reinforcing ribs (111) are arranged on the first surface, and the plurality of power transmission external plugs (31) are all arranged on the second surface.

5. The transmission connection assembly according to claim 4, characterized in that: The reinforcing ribs also include second reinforcing ribs (121), the base (1) includes an extension section (12), the power transmission internal plug (32) of the transmission connector (3) is connected to the extension section (12), and the second reinforcing ribs (121) are arranged on the extension section (12).

6. The transmission connection assembly according to any one of claims 1 to 5, characterized in that: The plurality of transmission connectors (3) are connectors of different voltages.

7. The transmission connection assembly according to any one of claims 1 to 5, characterized in that: The plurality of transmission connection members (3) each comprises a power transmission external plug (31), a transmission connection portion and a power transmission internal plug (32) which are connected in sequence, and the plurality of transmission connection portions are embedded in the base (1) at intervals; And / or, the communication connector (2) comprises a communication external plug (21), a communication connection portion and a communication internal plug (22) which are connected in sequence, and the communication connection portion is embedded in the base (1).

8. The transmission connection assembly according to any one of claims 1 to 5, characterized in that: The base (1) comprises a plurality of partitions (13), and the partitions (13) are arranged between any two adjacent power transmission external plugs (31) of the transmission connectors (3) to block the plurality of power transmission external plugs (31).

9. The transmission connection assembly according to claim 8, characterized in that: The cross section of the partition (13) is C-shaped, and two adjacent partitions (13) have a common plate.

10. The transmission connection assembly according to any one of claims 1 to 5, characterized in that: Each of the transmission connecting parts (3) comprises an external power transmission plug (31), each of the external power transmission plug (31) is provided with an anti-fool structure (312), each of the anti-fool structures (312) has two notches (3121) extending along the radial direction of the external power transmission plug (31), and the included angle between the two notches (3121) of any two of the anti-fool structures (312) is different in size.

11. A battery pack, characterized in that: It comprises a housing (200) and a transmission connection assembly according to any one of claims 1 to 10, wherein the transmission connection assembly (100) is detachably connected to the housing (200).

12. The battery pack according to claim 11, characterized in that: The base (1) is located inside the shell (200), and a relief hole is provided on the shell (200), and the communication external plug (21) of the communication connector (2) and the power transmission external plugs (31) of the plurality of transmission connectors (3) partially pass through the relief hole.

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