Distributor, battery pack and electric device

Abstract

The invention provides a power distributor, a battery pack and a power utilization device. The power distributor comprises a battery management unit and a relay, the battery management unit and the relay are stacked in the Z direction, one of the battery management unit and the relay is connected with the conductive terminal, the other one is connected with the plug-in, and the conductive terminal is connected with the plug-in in an inserted mode. The relay and the battery management unit are stacked in the Z direction, on one hand, the overall structure of the distributor can be more compact, on the other hand, the distance between the relay and the battery management unit can be shortened, electric connection can be achieved through plugging of the conductive terminal and the plug-in, wire harness electric connection is replaced, and electric connection of the relay and the battery management unit is simpler and more space-saving.

Description

Technical Field

[0001] This invention relates to the field of energy distribution technology, specifically a power distributor, a battery pack, and an electrical device. Background Technology

[0002] The power distribution unit mainly consists of components such as relays, fuses, and a battery control unit (BMU). The BMU primarily comprises a circuit board with control functions and serves as the core component of the battery control system. The power distribution unit plays a crucial safety role in the battery system, leading to increasingly stringent requirements for compact, simplified, and lightweight design. Currently, most battery systems use a separate design for the various units of the power distribution unit, supplied by two different manufacturers or departments, then assembled and connected via wiring harnesses. This results in the following problems: firstly, the need to maintain certain assembly clearances for each component in terms of length and width leads to wasted space; secondly, the wiring harness layout is cumbersome and prone to safety accidents. Summary of the Invention

[0003] To address the issues of wasted space and complex wiring connections in power distribution units, this invention provides a power distribution unit comprising a battery management unit and a relay. The battery management unit and the relay are stacked along the Z-axis, with one of them connected to a conductive terminal and the other connected to a plug-in. The conductive terminal and the plug-in are plugged in.

[0004] Stacking the relay and battery management unit along the Z-axis makes the overall structure of the power distributor more compact and brings the relay and battery management unit closer together. Electrical connection can be achieved through conductive terminals and plug-in connections, thus replacing wire harness electrical connection and making the electrical connection between the two simpler and more space-saving.

[0005] In an optional embodiment of the present invention, the conductive terminal and the plug-in are welded together.

[0006] In an optional technical solution of the present invention, the power distributor further includes a housing, which comprises an upper housing and a partition; the partition is disposed between the battery management unit and the relay; the battery management unit is disposed within the space enclosed by the upper housing and the partition; the power distributor also includes a fuse and a copper busbar, with a cover provided outside the fuse and the copper busbar to prevent finger contact. If the relay and battery management unit are simply placed inside the housing of the power distributor, the battery management unit must be disassembled before the relay can be removed, a very cumbersome process that can easily damage related components. By disposing the relay and battery management unit on the upper and lower sides of the partition, the upper housing can be disassembled separately for repair of the battery management unit, or the relay can be disassembled and repaired separately.

[0007] In an optional technical solution of the present invention, the relay is fixed on the partition plate and disposed within the space enclosed by the lower housing and the partition plate.

[0008] In an optional technical solution of the present invention, a mounting component is provided at the middle position of the housing of the relay along the Z-axis. The mounting component includes a through hole, which ensures that the relay can be mounted on the partition from the front or from the back.

[0009] In an optional embodiment of the present invention, the conductive terminal includes a fixed base, a clamping member, and a bracket. The conductive clamping member is fixed to a first side of the fixed base and includes a pair of spring clips for clamping the plug-in. The bracket includes a floating structure and a connecting member. The floating structure is connected between the fixed base and the connecting member and is bent along a first direction and a second direction. The bent portion of the floating structure can absorb the installation position error of the conductive terminal and the plug-in, allowing the clamping member connected to the fixed base to float as a whole within a large range, thereby facilitating insertion and reducing the difficulty of mating. Simultaneously, the floating structure can also absorb stress during vibration, preventing damage to the conductive terminal.

[0010] In an optional embodiment of the present invention, the bracket is fixed to the second side of the fixing base. This increases the floating capability in the non-clamping direction (i.e., the arrangement direction of the two springs in a pair of springs).

[0011] In an optional technical solution of the present invention, the floating structure includes a first bending segment and a second bending segment. The first orientation is the orientation along the Z-axis from the start point to the end point of the first bending segment, and the second orientation is the orientation along the Z-axis from the start point to the end point of the second bending segment. The directions of the first orientation and the second orientation are opposite.

[0012] In an optional technical solution of the present invention, the first bending segment extends obliquely upward from the fixed base, and the second bending segment extends obliquely downward from the end point of the first bending segment.

[0013] The floating structure also includes a third bend, which extends diagonally downward from the end point of the second bend.

[0014] In an optional technical solution of the present invention, the difference between the length of the second bending segment and the length of the third bending segment is less than or equal to 40% of the length of the third bending segment.

[0015] In an optional technical solution of the present invention, the intersection of the fixed base and the bracket is the starting point of the floating structure, the intersection of the floating structure and the connector is the ending point of the floating structure, and the distance between the starting point and the ending point along the extension direction of the first side is less than or equal to half the height of the conductive terminal.

[0016] In an optional technical solution of the present invention, the floating structure is provided with a hollow structure.

[0017] In an optional technical solution of the present invention, the fixed base is a rectangular structure, the paired spring pieces are respectively connected to the two first sides of the fixed base, and the floating structure is connected to the two second sides of the fixed base;

[0018] The aforementioned fixing base has a through hole in the middle, which is used for the insertion of the aforementioned plug.

[0019] In an optional technical solution of the present invention, the connecting member includes a first connecting member and a second connecting member, wherein the length of the second connecting member along the Z-axis is greater than the length of the first connecting member along the Z-axis.

[0020] In an optional technical solution of the present invention, the connector includes two first connectors and two second connectors, with the two second connectors arranged diagonally.

[0021] In an optional embodiment of the present invention, the conductive terminal includes a plurality of pairs of spring contacts.

[0022] In an optional technical solution of the present invention, the plug-in includes a fixing part, a floating part, and a plug-in part. The floating part includes a bent structure, the plug-in part is used to plug into the conductive terminal, and the floating part is located between the fixing part and the plug-in part.

[0023] The present invention also provides a battery pack including the above-mentioned power distributor.

[0024] The present invention also provides an electrical device including the above-described battery pack.

[0025] Proposal 1. A power distribution unit, characterized in that it comprises:

[0026] Battery Management Unit;

[0027] Relay;

[0028] The battery management unit and the relay are stacked along the Z-axis. One of the battery management unit and the relay is connected to a conductive terminal, and the other is connected to a plug-in. The conductive terminal and the plug-in are plugged in.

[0029] Proposal 2. The power distribution unit as described in Proposal 1, characterized in that the conductive terminal and the plug are welded together.

[0030] Proposal 3. The power distribution unit as described in Proposal 1, characterized in that the power distribution unit further includes a housing, the housing comprising an upper housing and a partition;

[0031] The partition is disposed between the battery management unit and the relay;

[0032] The battery management unit is located within the space enclosed by the upper housing and the partition.

[0033] Proposal 4. The power distribution unit as described in Proposal 3, characterized in that the relay is fixed on the partition.

[0034] Proposal 5. The power distribution unit as described in Proposal 4, characterized in that the housing further includes a lower housing, and the power distribution unit is disposed within the space enclosed by the lower housing and the partition.

[0035] Proposal 6. The power distribution unit as described in Proposal 4, characterized in that a mounting component is provided at the midpoint of the housing of the relay along the Z-axis.

[0036] Proposal 7. The power distribution unit as described in Proposal 1, characterized in that the conductive terminals comprise:

[0037] Fixed base;

[0038] A conductive clamping member is fixed to the first side of the fixing base. The clamping member includes a pair of spring tabs and is used to clamp the plug-in.

[0039] The bracket is fixed to the mounting base;

[0040] The bracket includes a floating structure and a connector. The floating structure is connected between the fixed base and the connector, and the floating structure bends along a first direction and a second direction.

[0041] Proposal 8. The power distribution unit as described in Proposal 7, characterized in that the bracket is fixed to the second side of the fixing base.

[0042] Proposal 9. The power distributor as described in Proposal 8, characterized in that the floating structure includes a first bending segment and a second bending segment, the first orientation being the orientation along the Z-axis from the start point to the end point of the first bending segment, the second orientation being the orientation along the Z-axis from the start point to the end point of the second bending segment, and the first orientation and the second orientation being opposite in direction.

[0043] Proposal 10. The power distribution unit as described in Proposal 9, characterized in that the first bent section extends obliquely upward from the fixed base, and the second bent section extends obliquely downward from the end point of the first bent section;

[0044] The floating structure also includes a third bend, which extends obliquely downward from the end point of the second bend.

[0045] Proposal 11. The power distributor as described in Proposal 10, characterized in that the difference between the length of the second bending segment and the length of the third bending segment is less than or equal to 40% of the length of the third bending segment.

[0046] Proposal 12. The power distributor as described in Proposal 8, characterized in that the intersection of the fixed base and the bracket is the starting point of the floating structure, the intersection of the floating structure and the connector is the ending point of the floating structure, and the distance between the starting point and the ending point along the extension direction of the first side is less than or equal to half the height of the conductive terminal.

[0047] Proposal 13. The power distribution unit as described in Proposal 8, characterized in that the floating structure is provided with a hollow structure.

[0048] Proposal 14. The power distribution unit as described in Proposal 8, characterized in that the fixed base is a rectangular structure, the paired spring contacts are respectively connected to the two first sides of the fixed base, and the floating structure is connected to the two second sides of the fixed base;

[0049] The fixing base has a through hole in the middle, which is used for the insertion of the plug.

[0050] Proposal 15. The power distribution unit as described in Proposal 8, characterized in that the connector includes a first connector and a second connector, wherein the length of the second connector along the Z-axis is greater than the length of the first connector along the Z-axis.

[0051] Proposal 16. The power distribution unit as described in Proposal 15, characterized in that the connector comprises two first connectors and two second connectors, the two second connectors being arranged diagonally.

[0052] Proposal 17. The power distributor as described in Proposal 8, characterized in that the conductive terminals comprise a plurality of paired spring contacts.

[0053] Proposal 18. The power distributor as described in Proposal 1, characterized in that the plug-in includes a fixed part, a floating part, and a plug-in part, the floating part including a bent structure, the plug-in part being used for plugging into the conductive terminal, and the floating part being located between the fixed part and the plug-in part.

[0054] Proposal 19. The power distribution unit as described in Proposal 1, characterized in that the power distribution unit further includes an electric quick-connect connector, and the electric quick-connect connector is electrically connected to the relay.

[0055] Proposal 20. A battery pack, characterized in that it includes a power distributor as described in any one of Proposals 1 to 19.

[0056] Proposal 21. An electrical device, characterized in that it includes a battery pack as described in Proposal 20. Attached Figure Description

[0057] Figure 1 A 3D view of the power distribution unit;

[0058] Figure 2 for Figure 1 A bottom view;

[0059] Figure 3 Exploded view of the power distribution unit;

[0060] Figure 4 This is a schematic diagram illustrating the connection between the relay and the partition;

[0061] Figure 5 A perspective view of one embodiment of a conductive terminal;

[0062] Figure 6 This is a schematic diagram showing two bending methods for a floating structure;

[0063] Figure 7 for Figure 5 The main view;

[0064] Figure 8 This is another embodiment of a floating structure;

[0065] Figure 9 This is a schematic diagram showing the conductive terminals mounted on the BMU.

[0066] Figure 10 A schematic diagram of a plug-in embodiment of a clamping element and a plug-in;

[0067] Figure 11 This is a schematic diagram of another plug-in embodiment of the clamping element and plug.

[0068] Figure 12 This is a perspective view of another embodiment of the conductive terminal of the present invention.

[0069] Figure Labels

[0070] Power distribution unit 100;

[0071] Battery Management Unit 110;

[0072] Relay 120, mounting component 121;

[0073] Conductive terminal 130;

[0074] Mounting base 131;

[0075] First side 1311, second side 1312, through hole 1313;

[0076] Clamping element / spring 132;

[0077] First segment 1321, second segment 1322, protrusion 1323;

[0078] Bracket 133;

[0079] Floating structure 1331;

[0080] First bend segment 13311, second bend segment 13312, third bend segment 13313;

[0081] Connector 1332;

[0082] First connector 13321, second connector 13322;

[0083] Hollowed-out structure 1333;

[0084] Auxiliary component 134;

[0085] Plugin 140;

[0086] Fixed part 141, floating part 142, plug-in part 143;

[0087] Upper casing 150;

[0088] Partition 160;

[0089] Partial cover 170;

[0090] The middle frame is 180. Detailed Implementation

[0091] The following describes optional embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0092] In the description of this invention, it should be understood that the terms "distance", "width", "thickness", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0093] In the description of this invention, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly defined.

[0094] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0095] In existing power distribution units, the battery management unit and relays are laid flat on the XY plane and electrically connected by numerous and long wiring harnesses. To address the issues of wasted space and complex wiring harness connections in power distribution units, such as... Figure 1-4 As shown, this invention provides a power distributor 100, which includes a battery management unit 110 and a relay 120. The battery management unit 110 and the relay 120 are stacked along the Z-axis. Compared to placing them flat in the XY plane, stacking them along the Z-axis saves more space and makes the overall structure of the power distributor more compact. One of the battery management unit 110 and the relay 120 is connected to a conductive terminal 130, and the other is connected to a plug-in 140. The conductive terminal 130 and the plug-in 140 are plugged in. That is, stacking the battery management unit 110 and the relay 120 along the Z-axis allows for a smaller distance between them, enabling electrical connection through plug-in. Replacing wire harness connection with plug-in connection of the conductive terminal 130 and the plug-in 140 simplifies the electrical connection method and saves space within the power distributor.

[0096] In an optional embodiment of the present invention, the conductive terminal 130 and the plug-in 140 are welded, that is, after the conductive terminal 130 and the plug-in 140 are plugged in, welding is performed to further improve the stability of the electrical connection between the two.

[0097] In optional embodiments of the present invention, such as Figure 2 and Figure 3As shown, the power distributor 100 also includes a housing, which comprises an upper housing 150, a partition 160, and a partial cover 170. The partition 160 is disposed between the battery management unit 110 and the relay 120. The battery management unit 110 is disposed within the space enclosed by the upper housing 150 and the partition 160. The relay 120 is disposed below the partition 160. The power distributor 100 also includes a fuse and a copper busbar. The partial cover 170 is used to cover the fuse and the copper busbar, serving to prevent finger contact. If the relay 120 and the battery management unit 110 are simply placed inside the housing of the power distributor 100, the battery management unit 110 must be disassembled first to remove the relay 120, which is a very troublesome process and can easily damage related components. By disposing the relay 120 and the battery management unit 110 on the upper and lower sides of the partition 160, the upper housing 150 can be disassembled separately to repair the battery management unit 110 or the relay 120 can be disassembled and repaired separately. In this embodiment, only a partial cover 170 is provided below the power distributor 100 to cover the fuse and copper busbar. It can be understood that the power distributor can also be provided with a complete lower housing to cover all components located below the partition, such as relays, fuses, and copper busbars.

[0098] Optional, such as Figure 3 As shown, the housing of the power distributor 100 also includes a middle frame 180. The partition 160 and the middle frame 180 can be integrally formed. The upper housing 150 is connected to the middle frame 180, and the lower housing 170 is connected to either the middle frame 180 or the partition 160. Specifically, the position of the partition can be determined according to the space required by the components above and below it. For example, in this embodiment, the space required by the relay 120 is larger than the space required by the battery management unit 110, and the partition 160 is located slightly above the height of the middle frame 180.

[0099] Optional, such as Figure 3 and Figure 4 As shown, a mounting part 121 is provided at the middle position of the housing of the relay 120 along the Z-axis. The mounting part 121 includes a through hole, which can ensure that the relay 120 can be installed on the partition 160 from the front or the back.

[0100] In optional embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the power distributor 100 also includes an electric quick-connect connector 180, which is electrically connected to the relay 120 via a copper busbar 190.

[0101] In optional embodiments of the present invention, such as Figure 5-12As shown, the conductive terminal 130 includes a fixed base 131, a conductive clamping member 132, and a bracket 133. The clamping member 132 is fixed to a first side 1311 of the fixed base 131, and the bracket 133 is fixed to a second side 1312 of the fixed base 131. The clamping member 132 includes a pair of spring tabs for clamping the insert 140. The bracket 133 includes a floating structure 1331 and a connecting member 1332. The floating structure 1331 is connected between the fixed base 131 and the connecting member 1332, and the floating structure 1331 is bent along a first direction (Z-axis or X-axis). The clamping member 132 is fixed to the first side of the fixing base 131, that is, the clamping member 132 clamps the plug-in 140 along the Y direction, and the bracket 133 is fixed to the second side 1312 of the fixing base 131. The floating structure 1331 can absorb the installation position error of the conductive terminal 130 and the plug-in 140, so that the clamping member 133 connected to the fixing base 131 can float significantly in the X or Z direction as a whole, thereby connecting with the plug-in 140. Figure 6 As shown, the connection between the fixed base 131 and the floating structure 1331 can be in two forms, a and b. Figure a shows that the floating structure 1331 bends only along the Z-axis, so the clamping member 132 as a whole can float along the X-axis. Figure b shows that the floating structure 1331 bends only along the X-axis, so the clamping member 132 as a whole can float along the Z-axis.

[0102] In optional embodiments of the present invention, such as Figure 7 As shown, the floating structure 1331 also bends along a second direction (Z-axis or X-axis). That is, the floating structure 1331 can bend along both the first and second directions simultaneously, further improving the flexibility of the clamping member 132. The clamping member 132 as a whole can float along the Z-axis and X-axis to connect with the plug-in 140.

[0103] In optional embodiments of the present invention, such as Figure 7 As shown, the floating structure 1331 includes a first bent segment 13311 and a second bent segment 13312. The direction along the Z-axis from the start point to the end point of the first bent segment 13311 is the first orientation, and the direction along the Z-axis from the start point to the end point of the second bent segment 13312 is the second orientation. The first and second orientations are opposite, so while ensuring that the clamping member 132 as a whole can float along the Z-axis and X-axis to connect with the plug-in 140, it avoids occupying a large amount of Z-axis space. Specifically, as shown... Figure 7 As shown, the first bent segment 13311 is disposed between the fixed base 131 and the second bent segment 13312. The first bent segment 13311 extends obliquely upward from its connection with the fixed base 131, and the second bent segment 13312 extends obliquely downward from its starting point. Of course, the floating structure can also extend obliquely downward from the fixed base 131 only, but... Figure 3 Compared to the structure that extends only diagonally downwards from the fixed base 131, this structure saves space in the Z direction. Compared to... Figure 2Structures that extend directly along the Z-direction or along the X-direction. Figure 3 The bent sections extend obliquely upwards or downwards, and can simultaneously float along the Z-axis and the Z-axis.

[0104] Optional, such as Figure 7 As shown, the floating structure 1331 also includes a third bent segment 13313, which extends obliquely downward from the end point of the second bent segment 13312. The arrangement of the third bent segment 13313 allows the floating structure 1331 to have a larger floating range in the Z and X axes, resulting in a larger floating space for the clamping member 132. It is understood that the second bent portion 13312 can also be arranged between the fixed base 131 and the first bent portion 13311. In another embodiment of the present invention, the difference between the length of the second bent segment 13312 and the length of the third bent segment 13313 is less than or equal to 40% of the length of the third bent segment 13313. Setting the lengths of the second bent segment 13312 and the third bent segment 13313 to be approximately equal allows the bracket 133 to have a larger and more flexible floating range in the Z and X directions. In this embodiment, the floating structure 1331 includes three bent segments, but it can also include four or five, and the number is not limited.

[0105] like Figure 8 As shown, in another embodiment of the present invention, the first bent segment may also extend obliquely downward from the fixed seat, and the second bent segment may extend obliquely upward from the intersection with the first bent segment. This also allows the clamping member 132 to float on the Z-axis and X-axis while saving space in the Z-axis. It is understood that, under the embodiments disclosed in the present invention, other modifications are within the protection scope of the present invention.

[0106] like Figure 12 As shown, the floating structure 1331 of the conductive terminal 130 may include only two bent sections. Specifically, both the first and second bent sections extend obliquely downwards, with the first bent section extending away from the fixed base along the X-axis and the second bent section extending towards the fixed base along the X-axis. Furthermore, in this embodiment, the conductive terminal includes only two connectors 13312.

[0107] like Figure 7 As shown, in an optional embodiment of the present invention, the intersection of the fixed base 131 and the bracket 133 is the starting point A of the floating structure 1331, and the intersection of the floating structure 1331 and the connector 1332 is the ending point B of the floating structure 1331. The distance between the starting point A and the ending point B along the extension direction (i.e., the X-axis direction) of the first side 1311 is less than or equal to half the height of the conductive terminal 130. The smaller the distance between the starting point A and the ending point B along the X-axis, the better the floating capability. In another optional embodiment of the present invention, as... Figure 3As shown, the Z-direction distance between the fixed base 131 and the endpoint B of the floating structure 1331 is less than or equal to the height of the clamping member 132.

[0108] In optional embodiments of the present invention, such as Figure 5 As shown, the floating structure 1331 is provided with a hollow structure 1333. The hollow structure 1333 allows the floating structure 1331 to have a certain floating space on the Y-axis. In addition, the floating structure 1331 can float along the Z-axis and X-axis, so the floating structure 1331 can float in three directions in space, which further improves the flexibility of the clamping member 132 and makes it easier to connect the plug-in 140 to the conductive terminal 130.

[0109] In optional embodiments of the present invention, such as Figure 5 and Figure 7 As shown, the fixed base 131 has a rectangular structure, and a pair of spring pieces are respectively connected to the two first sides 1311 of the fixed base 131. The floating structure 1331 is connected to the two second sides 1312 of the fixed base 131. The fixed base 131 has a through hole 1313 in the middle, which is used for the plug 140 to pass through and be inserted into the clamping member 132.

[0110] In optional embodiments of the present invention, such as Figure 5 and Figure 9 As shown, connector 1332 includes a first connector 13321 and a second connector 13322, with the length of the second connector 13322 along the Z-axis being greater than the length of the first connector 13321 along the Z-axis. When the conductive terminal 130 is installed onto the relevant component, the first connector 13321 contacts the installation position first, serving a positioning function. In another optional embodiment of the present invention, the width of the second connector 13322 may be less than the width of the first connector 13321. Alternatively, the width of the second connector 13322 may be equal to the width of the first connector 13321. In another optional embodiment of the present invention, connector 1332 includes two first connectors 13321 and two second connectors 13322, with the two second connectors 13322 arranged diagonally for easier positioning. It is understood that the above are all optional embodiments of the present invention for easier positioning, and all are within the protection scope of the present invention.

[0111] In optional embodiments of the present invention, such as Figure 5 , Figure 7 and Figure 9As shown, the conductive terminal 130 includes an auxiliary component 134 for connecting to tooling equipment. When installing the conductive terminal 130 to a related component (such as a battery management unit BMU), the conductive terminal 130 needs to be gripped and moved. For example, it can be attracted to the auxiliary component by a suction cup to move the conductive terminal 130 and insert it into the battery management unit 110 (BMU). Then, the conductive terminal 130 and the battery management unit 110 are welded together by a welding device.

[0112] In optional embodiments of the present invention, such as Figure 5 As shown, the conductive terminal 130 includes multiple pairs of spring contacts (i.e., clamping elements). When the plug-in 140 deflects in the XY plane, if a pair of spring contacts with a larger width along the X-axis are inserted, the contact area between the plug-in 140 and the pair of spring contacts is very small. Figure 5 Multiple pairs of narrow spring contacts are arranged along the X-axis to increase the contact area between all spring contacts and the insert 140. In another optional embodiment of the invention, such as Figure 5 and Figure 7 As shown, the spring includes a first spring segment 1321 and a second spring segment 1322. The first spring segment 1321 connects to the fixing base 131 and the second spring segment 1322. The width of the first spring segment 1321 is smaller than the width of the second spring segment 1322, which gives the spring better flexibility, especially making it easier for the spring to rotate along the Y-axis. Figure 10 As shown, in another optional embodiment of the present invention, a pair of spring pieces 132 are provided with a pair of protrusions 1323 inside, the protrusions 1323 are used to contact the plug-in 140, which can increase the contact area.

[0113] Figure 7 The diagram shows the plug-in state of the connector 140 connected to the relay 120 and the conductive terminal 130 connected to the battery management unit 110. This plug-in structure can also be used for parts of the distributor 100 that require electrical connection, including but not limited to the plug-in connected to the relay 120 and the conductive terminal connected to the BMU. In another embodiment of the invention, such as... Figure 11As shown, the plug-in 140 includes a fixed part 141, a floating part 142, and a plug-in part 143. The floating part 142 includes a bent structure, and the plug-in part 143 is used to plug into the conductive terminal 130. The floating part 142 is located between the fixed part 141 and the plug-in part 143, and the floating part 142 also has a hollow structure. Similarly, the floating part 142 also includes multiple bent sections, which are transitioned with small rounded corners, allowing the plug-in 140 to float in the XYZ three directions, further improving the flexibility of plug-in 140 and conductive terminal 130 plug-in connection. If there are multiple plug-in electrical connection structures in the distributor 100, multiple plugs need to be inserted into multiple conductive terminals respectively, making electrical contact with multiple conductive terminals respectively. The installation position error of each conductive terminal and each plug-in should be very small or zero; otherwise, multiple plugs without a floating structure cannot be inserted into multiple conductive terminals simultaneously. In the power distributor 100 provided by the present invention, since both the conductive terminal 130 and the plug-in 140 contain a floating structure, even if there is a certain error in the installation position, each plug-in 140 can be inserted into the corresponding conductive terminal 130, which greatly reduces the matching difficulty and reduces the cost.

[0114] The present invention also provides a battery pack, which includes the above-described power distributor 100.

[0115] The present invention also provides an electrical device. The electrical device of the present invention includes a battery pack in an optional embodiment. This electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0116] The technical solutions of the present invention have been described in conjunction with the optional embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A power distribution device, characterized in that, include: Battery Management Unit; Relay; The battery management unit and the relay are stacked along the Z-axis. One of the battery management unit and the relay is connected to a conductive terminal, and the other is connected to a plug-in. The conductive terminal and the plug-in are plugged in.

2. The power distribution unit as described in claim 1, characterized in that, The conductive terminal and the plug are welded together.

3. The power distribution unit as described in claim 1, characterized in that, The power distribution unit also includes a housing, which includes an upper housing and a partition; The partition is disposed between the battery management unit and the relay; The battery management unit is located within the space enclosed by the upper housing and the partition.

4. The power distribution unit as described in claim 3, characterized in that, The relay is fixed to the partition.

5. The power distribution unit as described in claim 4, characterized in that, The housing also includes a lower housing, and the power distributor is disposed within the space enclosed by the lower housing and the partition.

6. The power distribution unit as described in claim 4, characterized in that, The relay housing has a mounting component located at the midpoint of its Z-axis.

7. The power distribution unit as described in claim 1, characterized in that, The conductive terminal includes: a mounting base; A conductive clamping member is fixed to the first side of the fixing base. The clamping member includes a pair of spring tabs and is used to clamp the plug-in. The bracket is fixed to the mounting base; The bracket includes a floating structure and a connector. The floating structure is connected between the fixed base and the connector, and the floating structure bends along a first direction and a second direction.

8. The power distribution unit as described in claim 7, characterized in that, The bracket is fixed to the second side of the fixed base.

9. The power distribution unit as described in claim 8, characterized in that, The floating structure includes a first bent segment and a second bent segment. The first orientation is the orientation along the Z-axis from the start point to the end point of the first bent segment, and the second orientation is the orientation along the Z-axis from the start point to the end point of the second bent segment. The first orientation and the second orientation are opposite in direction.

10. The power distribution unit as described in claim 9, characterized in that, The first bent segment extends obliquely upward from the fixed base, and the second bent segment extends obliquely downward from the end point of the first bent segment; The floating structure also includes a third bend, which extends obliquely downward from the end point of the second bend.

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