Female terminal, connection terminal assembly, and power distribution unit

Abstract

The utility model discloses a female terminal, a connection terminal assembly and a power distribution unit, and relates to a terminal structure. The female end terminal comprises a bearing shell and a plug-in body, the plug-in body is used for being in plug-in connection with a male end terminal, the bearing shell is provided with an assembly space and a socket communicated with the assembly space, the plug-in body is located in the assembly space and corresponds to the socket, and the plug-in body and the bearing shell are in sliding connection in the first direction. The first elastic piece assembly and the second elastic piece assembly are oppositely arranged in the first direction, an insertion space extending in the second direction is formed between the first elastic piece assembly and the second elastic piece assembly, and the first elastic piece assembly and / or the second elastic piece assembly elastically abut against the male end terminal in the state that the male end terminal is arranged in the socket and the insertion space. And the insertion space is arranged to allow the male end terminal to slide in the second direction. By designing the female terminal, error compatibility can be carried out in the first direction and / or the second direction, and the assembling capacity of the power distribution unit is improved.

Description

Technical Field

[0001] This application relates to terminal structures, and more particularly to a female terminal, a connecting terminal assembly, and a power distribution unit. Background Technology

[0002] In new energy vehicles, the power battery is the main core component. In the power battery, the power distribution unit is usually the main brain of the battery pack, which is assembled with multiple devices that need to be electrically connected. However, due to certain dimensional tolerances, the assembly process is not smooth. Utility Model Content

[0003] One embodiment of this application provides a female terminal, which includes a carrier shell and a plug body. The plug body is used to plug into a male terminal. The carrier shell has an assembly space and a socket communicating with the assembly space. The plug body is located in the assembly space and is disposed corresponding to the socket. The plug body is slidably connected to the carrier shell in a first direction and has a first spring assembly and a second spring assembly disposed opposite to each other in the first direction. An insertion space extending in a second direction is formed between the first spring assembly and the second spring assembly. When the male terminal is placed in the socket and the insertion space, the first spring assembly and / or the second spring assembly elastically abut against the male terminal, and the insertion space is configured to allow the male terminal to slide in the second direction.

[0004] A further embodiment is that the plug body is provided with snap-fit ​​portions on opposite sides in the second direction, the carrier shell is provided with a limiting groove in the assembly space, the snap-fit ​​portions are placed in the limiting groove to limit the plug body from sliding out of the socket in the assembly space, and the limiting groove is configured to allow the snap-fit ​​portions to slide in the first direction.

[0005] A further embodiment is that the plug body includes a plug body, the first spring contact assembly and the second spring contact assembly, and the snap-fit ​​part are all disposed on the plug body, one end of the snap-fit ​​part is connected to the plug body and is bent toward the side near the socket to limit the plug body from sliding out of the socket into the assembly space within the limiting groove.

[0006] A further embodiment is provided with an installation port on the carrier shell that communicates with the assembly space. The installation port and the insertion port are located on opposite sides of the carrier shell. A limiting part is provided on the edge of the installation port. The limiting part abuts against the insertion body to limit the insertion body from sliding out of the assembly space from the installation port.

[0007] A further embodiment is that the connector is provided with limiting grooves on opposite sides in the second direction, the bearing shell is provided with a snap-fit ​​part in the assembly space, the snap-fit ​​part is placed in the limiting groove to limit the connector from sliding out of the socket in the assembly space, and the limiting groove is configured to allow the snap-fit ​​part to slide in the first direction.

[0008] A further embodiment is that the carrier shell has welding pins on the side opposite to the socket.

[0009] A further embodiment is that the connector is provided with elastic limiting portions on opposite sides in the first direction, and the elastic limiting portions abut against the bearing shell.

[0010] A further embodiment is that the bearing shell is provided with elastic limiting portions on the first direction and on the opposite sides of the plug body, and the elastic limiting portions abut against the plug body.

[0011] A further embodiment is that the plug body includes a plug body, the first spring assembly and the second spring assembly are both disposed on the plug body, each of the first spring assembly and the second spring assembly includes an elastic sheet, one end of the elastic sheet is connected to the plug body and extends away from the plug port.

[0012] A further embodiment is that the elastic sheet includes an elastic arm and an abutment portion, the abutment portion being used to abut against the male terminal, the elastic arm being connected to the abutment portion and protruding outward toward the assembly space.

[0013] One embodiment of this application provides a connection terminal assembly, including a male terminal and the aforementioned female terminal. When the male terminal is placed in the socket and the insertion space, the first spring assembly and / or the second spring assembly elastically abut against the male terminal, and the insertion space is configured to allow the male terminal to slide in the second direction.

[0014] One embodiment of this application provides a power distribution unit, including a battery management system mainboard, a plurality of electronic auxiliary devices, and an electrical connector. At least some of the plurality of electronic auxiliary devices are electrically connected to the battery management system mainboard, and the electrical connector is electrically connected to at least some of the plurality of electronic auxiliary devices. The power distribution unit is configured to be electrically connected to a power source and a load through the electrical connector. At least some of the plurality of electronic auxiliary devices are electrically connected to the battery management system mainboard through the aforementioned connection terminal assembly; and / or, the electrical connector is connected to at least some of the plurality of electronic auxiliary devices through the aforementioned connection terminal assembly.

[0015] This application adopts the above-mentioned technical solution. By designing the female terminal, this application can achieve error compatibility in the first direction and / or the second direction, thereby improving the assembly capability of the power distribution unit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the power distribution unit in some embodiments of this application;

[0017] Figure 2 for Figure 1 Exploded view of the power distribution unit in some embodiments shown in the illustration;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of the first housing in the embodiment shown;

[0019] Figure 4 for Figure 2 The diagram shown illustrates the connection between the first housing, electronic auxiliary components, and electrical connectors in the embodiment shown.

[0020] Figure 5 This is a schematic diagram of the structure of the connection terminal assembly in some embodiments of this application;

[0021] Figure 6 for Figure 5 A schematic diagram of the connector structure in the embodiment shown;

[0022] Figure 7 for Figure 5 Cross-sectional view of the connector in some embodiments shown in the illustration;

[0023] Figure 8 for Figure 5 The connector shown in the embodiment is a cross-sectional view in some other embodiments. Detailed Implementation

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0025] This application describes a power distribution unit (PDU). PDUs are primarily used in new energy vehicles, data centers, and industrial automation. Their main functions include charge / discharge control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, and low-voltage control to ensure the safe and efficient operation of the system. PDUs play a crucial role in modern power systems and industrial automation, becoming indispensable equipment in many fields due to their high safety, modularity, scalability, and high vibration resistance.

[0026] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the power distribution unit in some embodiments of this application. Figure 2 for Figure 1 The illustrated embodiment shows an exploded view of the power distribution unit in some embodiments. The power distribution unit 100 may include a housing assembly 10, an electronic auxiliary assembly 20, an electrical connector 30, and a battery management system mainboard 40. The housing assembly 10 can be used to support and mount the electronic auxiliary assembly 20, the electrical connector 30, and the battery management system mainboard 40, and can also support and mount other structures in the power distribution unit 100, which will not be described in detail. The electronic auxiliary assembly 20 can be used to realize the functions of automatic adjustment, safety protection, switching circuit, monitoring and alarm, and remote control of the power distribution unit 100. Of course, it can also realize other functions of the power distribution unit 100 depending on the selection, design, and use. The electronic auxiliary assembly 20 can be electrically connected to the battery management system mainboard 40. The electrical connector 30 enables the circuit connection in the power distribution unit 100. The electrical connector 30 can connect the electronic auxiliary assembly 20 and the battery management system mainboard 40, and can also allow the power distribution unit 100 to be electrically connected to the power source and load through the electrical connector 30. That is, the electrical connector 30 can be electrically connected to the power source and load. The battery management system motherboard 40 can be used for charge and discharge control, high-voltage component power-on control, high-voltage sampling, low-voltage control, etc., and may include network interface, control chip and management software, etc. The specific configuration of the electronic components of the battery management system motherboard 40 can be determined according to selection, design and use.

[0027] Please see Figure 1 and Figure 2 The housing assembly 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are connected to form an installation space. The installation space is located between the first housing 11 and the second housing 12. The installation space can be used to install electronic auxiliary components 20, electrical connectors 30, and / or the battery management system mainboard 40.

[0028] The first shell 11 can be a shell structure, a frame structure, a plate structure, or other structures, which will not be elaborated here. We will take a plate structure as an example for illustration.

[0029] Please see Figure 2 The surface of the first housing 11 facing the second housing 12 and the battery management system mainboard 40 may be provided with an adjacent mounting area 101 and a connection area 102 for assembling electronic auxiliary components 20 and electrical connectors 30. That is, the mounting area 101 and the connection area 102 may be located on the inner surface of the first housing 11 within the mounting space. The arrangement of the mounting area 101 and the connection area 102 facilitates full utilization of the internal space of the power distribution unit 100, reducing its size and miniaturization.

[0030] Mounting area 101 can be used to mount electronic auxiliary components 20. Connecting area 102 can be used to mount electrical connectors 30. Connecting area 102 is located adjacent to the edge of the first housing 11, which allows the electrical connectors 30 to be more concentrated, simplifying the circuit design within the power distribution unit 100, facilitating quality inspection of the power distribution unit 100, and improving the overall quality control level of the power distribution unit 100. Compared to mounting area 101, connecting area 102 is closer to the edge on this side. In some embodiments, the first housing 11 may have orthogonal length and width directions, and mounting area 101 and connecting area 102 may be arranged in the width direction and extend in the length direction. Mounting area 101 is located adjacent to the long edge of one side of the first housing 11, and connecting area 102 is located adjacent to the long edge of the other side of the first housing 11. In some embodiments, the area of ​​mounting area 101 is larger than the area of ​​connecting area 102. In some embodiments, the first housing 11 may be a circular plate, and connecting area 102 surrounds mounting area 101 and can be connected to mounting area 101.

[0031] See Figure 2 and Figure 3 , Figure 3 for Figure 2 The illustrated embodiment shows a schematic diagram of the first housing 11. The mounting area 101 can be divided into multiple regions, such as a relay mounting area 1011, a main fuse mounting area 1012, a shunt mounting area 1013, and a branch fuse mounting area 1014. Of course, the mounting area 101 can be adjusted and divided as needed. The division of the mounting area 101 into different regions allows for a more rational arrangement of the components, resulting in a smaller overall size of the power distribution unit 100, compatibility with a wider range of vehicle models, and the generalization and miniaturization of the power distribution unit 100 design.

[0032] The relay mounting area 1011 is designed to facilitate horizontal placement of the relay, ensuring dimensional tolerance control in the direction from the first housing 11 to the second housing 12, and simplifying operation.

[0033] In some embodiments, the main fuse mounting area 1012, the shunt mounting area 1013, and the branch fuse mounting area 1014 may be disposed around the relay mounting area 1011 to simplify the circuit design within the power distribution unit 100. In some embodiments, the main fuse mounting area 1012, the shunt mounting area 1013, and the branch fuse mounting area 1014 may all be connected to the relay mounting area 1011. In some embodiments, the branch fuse mounting area 1014 may be located on the side of the shunt mounting area 1013 away from the connection area 102, so that the electrical connectors 30 are more concentrated in the connection area 102, simplifying the circuit design within the power distribution unit 100. In some embodiments, the branch fuse mounting area 1014 may be further away from the connection area 102 than the shunt mounting area 1013, so that the electrical connectors 30 are more concentrated in the connection area 102, simplifying the circuit design within the power distribution unit 100. In some embodiments, the shunt mounting area 1013 may be connected to the connection area 102. In some embodiments, the main fuse mounting area 1012 is located between the relay mounting area 1011 and the connection area 102, so that the electrical connectors 30 are more concentrated in the connection area 102, simplifying the circuit design within the power distribution unit 100. In some embodiments, the main fuse mounting area 1012 may be connected to the connection area 102. In some embodiments, the relay mounting area 1011 is partially located between the main fuse mounting area 1012 and the shunt mounting area 1013, and is connected to the connection area 102, so that the electrical connectors 30 are more concentrated in the connection area 102, simplifying the circuit design within the power distribution unit 100.

[0034] The relay mounting area 1011 can be used to install relays, and the specific configuration can be determined according to the type of relay. In some embodiments, the relay mounting area 1011 can be divided into multiple regions for multiple relays, such as a heating relay mounting area 1001, a main positive relay mounting area 1002, a fast charging relay mounting area 1003, and a main negative relay mounting area 1004, etc. Of course, the relay mounting area 1011 can also be adjusted and divided into regions as needed.

[0035] In some embodiments, a heat dissipation hole 1101 may be provided at the bottom of the relay mounting area 1011 corresponding to the bottom of the relay, so as to reserve space for heat dissipation at the bottom of the heat dissipation hole 1101, so that the first housing 11 does not fully contact the bottom of the relay. In some embodiments, the heat dissipation hole 1101 may penetrate through the first housing 11. In some embodiments, the heat dissipation hole 1101 may be a blind hole, and may also be referred to as a groove provided on the surface of the first housing 11 facing the second housing 12 and the battery management system main board 40. In some embodiments, in order to achieve heat dissipation of the relay mounting area 1011, a heat dissipation gap may be reserved between the first housing 11 and the relay, or a liquid cooling heat dissipation device may be provided on the first housing 11 to achieve heat dissipation of the power distribution unit 100, and of course, at least the relay may be cooled.

[0036] In some embodiments, the heating relay mounting area 1001, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, and the main negative relay mounting area 1004 may be arranged in the extending direction of the mounting area 101 or the extending direction of the connection area 102, so that the electrical connectors 30 are more concentrated in the connection area 102, simplifying the circuit design within the power distribution unit 100. In some embodiments, the extending direction of the connection area 102 may be an annular direction, thereby allowing the heating relay mounting area 1001, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, and the main negative relay mounting area 1004 to form a ring around the mounting area 101. In some embodiments, the heating relay mounting area 1001, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, and the main negative relay mounting area 1004 may be arranged sequentially in the extending direction of the mounting area 101 or the extending direction of the connection area 102. In some embodiments, the heating relay mounting area 1001 may be located on the side of the main fuse mounting area 1012 opposite to the connection area 102. That is, the main fuse mounting area 1012 may be located between the heating relay mounting area 1001 and the connection area 102. In some embodiments, the heating relay mounting area 1001 may be connected to the main fuse mounting area 1012. In some embodiments, the heating relay mounting area 1001 may be connected to the main positive relay mounting area 1002. In some embodiments, the main positive relay mounting area 1002 may be connected to the fast charging relay mounting area 1003. In some embodiments, the fast charging relay mounting area 1003 may be connected to the main negative relay mounting area 1004. In some embodiments, the shunt mounting area 1013 and the branch fuse mounting area 1014 may be located on the side of the main negative relay mounting area 1004 away from the fast charging relay mounting area 1003. That is, the main negative relay mounting area 1004 may be located between the shunt mounting area 1013 and the fast charging relay mounting area 1003, and the main negative relay mounting area 1004 may be located between the branch fuse mounting area 1014 and the fast charging relay mounting area 1003. In some embodiments, the shunt mounting area 1013 and the branch fuse mounting area 1014 may both be connected to the main negative relay mounting area 1004. In some embodiments, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, the main negative relay mounting area 1004, the main fuse mounting area 1012, and the shunt mounting area 1013 are arranged in the extending direction of the mounting area 101 or the extending direction of the connection area 102, and are connected to the connection area 102.

[0037] In some embodiments, the heat dissipation hole 1101 may be located in the heating relay mounting area 1001, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, or the main negative relay mounting area 1004.

[0038] In some embodiments, the relay mounting area 1011 may be provided with a snap-fit ​​assembly 111 corresponding to the relay for snap-fit ​​connection, thereby achieving a detachable connection. In some embodiments, the snap-fit ​​assembly 111 may include two snap-fit ​​members disposed opposite to each other, such that the relay is located between the two snap-fit ​​members and snap-fitted with them for a detachable connection. In some embodiments, at least one relay is provided with one snap-fit ​​assembly 111.

[0039] In some embodiments, the snap-fit ​​assembly 111 may be disposed in the heating relay mounting area 1001, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, or the main negative relay mounting area 1004.

[0040] In some embodiments, an elastic element 112 may be provided at the bottom of the relay mounting area 1011 corresponding to the relay to adjust the distance between the relay and the first housing 11 through elastic deformation. Alternatively, the elastic element 112 may be used to allow for clearance of the relay, enabling its installation and removal. In some embodiments, the elastic element 112 may be a spring, torsion spring, or other structure. In some embodiments, the elastic element 112 may be a cantilever structure formed by hollowing out the first housing 11. In some embodiments, the design of the elastic element 112 can reduce the probability of assembly failure due to machining errors in the first housing 11.

[0041] In some embodiments, the elastic element 112 can cooperate with the snap-fit ​​assembly 111 to engage the relay, enabling detachable installation of the relay. The elastic deformation of the elastic element 112 can apply a force to the relay, causing the relay to move away from the elastic element 112. This movement of the relay away from the elastic element 112 is limited by the snap-fit ​​assembly 111, thus enabling the installation of the elastic element 112. When installing the relay, the relay is placed directly between the two snap-fit ​​components, pressed against the side closer to the elastic element 112, causing the relay to abut against the elastic element 112. This further causes the elastic element 112 to undergo elastic deformation until the relay is snapped into place with the snap-fit ​​assembly 111. At this point, the elastic deformation of the elastic element 112 can apply a force to the relay, causing it to move away from the elastic element 112, thus engaging the snap-fit ​​assembly 111 to engage the relay. When disassembling the relay, the relay can be pressed against the side closer to the elastic member 112, so that the elastic member 112 undergoes further elastic deformation until the relay and the latching assembly 111 are disengaged from the latching connection state. Then release the pressure, and the relay will slide out from between the two latching members due to the elastic deformation of the elastic member 112.

[0042] In some embodiments, the elastic element 112 may be disposed in the heating relay mounting area 1001, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, or the main negative relay mounting area 1004.

[0043] In some embodiments, the elastic member 112 may be provided with heat dissipation holes 1101 as described in the above embodiments.

[0044] In some embodiments, a positioning groove or a surrounding plate may be provided on the first housing 11 to position and limit the relay. For example, the relay may be placed in the positioning groove. For example, the surrounding plate may be arranged around the relay. In some embodiments, the positioning groove or surrounding plate may be provided in the relay mounting area 1011. In some embodiments, the positioning groove or surrounding plate may be provided in the heating relay mounting area 1001, the main positive relay mounting area 1002, the fast charging relay mounting area 1003, or the main negative relay mounting area 1004.

[0045] In some embodiments, the main fuse mounting area 1012 is provided with a mounting platform 113 to make full use of space. The mounting platform 113 can make full use of the space in the direction (height direction, vertical direction) from the first housing 11 to the second housing 12, reducing the overall size of the power distribution unit 100, facilitating the vertical placement of the main fuse, and also facilitating quality inspection. In some embodiments, the shunt mounting area 1013 is provided with an assembly platform 114 to make full use of space. The assembly platform 114 can make full use of the space in the direction from the first housing 11 to the second housing 12, reducing the overall size of the power distribution unit 100, facilitating the vertical placement of the shunt, and also facilitating quality inspection. In some embodiments, the branch fuse mounting area 1014 is provided with a support platform 115 to make full use of space, improve installation efficiency, and provide convenience for maintenance. In some embodiments, the support platform 115 is also provided with an insulating isolator 116 to achieve electrical isolation between devices and to prevent the wire harness ring terminal from rotating and electrically connecting with the branch fuse 24.

[0046] The second housing 12 can be a shell structure, a frame structure, a plate structure, or other structures, which will not be elaborated here. Taking a plate structure as an example, the second housing 12 can be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection, or bonding, so as to form an installation space between the first housing 11 and the second housing 12.

[0047] Please see Figure 2 , Figure 3 and Figure 4 , Figure 4 for Figure 2The illustrated embodiment shows a schematic diagram of the connection between the first housing 11, the electronic auxiliary component 20, and the electrical connector 30. The electronic auxiliary component 20 may include multiple electronic auxiliary devices such as relays 21, fuses, shunts 23, etc., and may also include other types of electronic auxiliary devices well known in the art, which will not be elaborated upon. At least some of the multiple electronic auxiliary devices are electrically connected to the battery management system mainboard 40, and at least some may be electrically connected to the electrical connector 30.

[0048] The relay 21 may include a main positive relay 211 mounted on the side of the first housing 11 facing the second housing 12 and the battery management system main board 40. The main positive relay 211 can be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection, or adhesive bonding. In some embodiments, the main positive relay 211 may be mounted in a relay mounting area 1011, such as the main positive relay mounting area 1002. In some embodiments, the main positive relay 211 can be mounted on the first housing 11 by snap-fit ​​connection with a snap-fit ​​assembly 111. In some embodiments, the main positive relay 211 can be fixed by the snap-fit ​​assembly 111 cooperating with an elastic member 112. In some embodiments, the side of the main positive relay 211 facing the connection area 102 is electrically connected to an electrical connector 30. In some embodiments, the side of the main positive relay 211 facing the second housing 12 and the battery management system main board 40 can be electrically connected to the battery management system main board 40, and thus can be controlled by the battery management system main board 40.

[0049] The relay 21 may include a fast-charging relay 212 mounted on the side of the first housing 11 facing the second housing 12 and the battery management system mainboard 40. The fast-charging relay 212 can be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection, or bonding. In some embodiments, the fast-charging relay 212 may be mounted in a relay mounting area 1011, such as a fast-charging relay mounting area 1003. In some embodiments, the fast-charging relay 212 can be mounted on the first housing 11 by snap-fit ​​connection with a snap-fit ​​assembly 111. In some embodiments, the fast-charging relay 212 can be fixed by the snap-fit ​​assembly 111 cooperating with an elastic member 112. In some embodiments, the side of the fast-charging relay 212 facing the connection area 102 is electrically connected to the electrical connector 30. In some embodiments, the side of the fast-charging relay 212 facing the second housing 12 and the battery management system mainboard 40 can be electrically connected to the battery management system mainboard 40, and thus can be controlled by the battery management system mainboard 40.

[0050] The relay 21 may include a main negative relay 213 mounted on the side of the first housing 11 facing the second housing 12 and the battery management system main board 40. The main negative relay 213 can be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection, or adhesive bonding. In some embodiments, the main negative relay 213 may be mounted in a relay mounting area 1011, such as the main negative relay mounting area 1004. In some embodiments, the main negative relay 213 can be mounted on the first housing 11 by snap-fit ​​connection with a snap-fit ​​assembly 111. In some embodiments, the main negative relay 213 can be fixed by the snap-fit ​​assembly 111 cooperating with an elastic member 112. In some embodiments, the side of the main negative relay 213 facing the connection area 102 is electrically connected to the electrical connector 30. In some embodiments, the side of the main negative relay 213 facing the second housing 12 and the battery management system main board 40 can be electrically connected to the battery management system main board 40, and thus can be controlled by the battery management system main board 40.

[0051] The relay 21 may include a heating relay 214 mounted on the side of the first housing 11 facing the second housing 12 and the battery management system mainboard 40. The heating relay 214 may be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection, or adhesive bonding. In some embodiments, the heating relay 214 may be mounted in a relay mounting area 1011, such as a heating relay mounting area 1001. In some embodiments, the heating relay 214 may be mounted on the first housing 11 by snap-fit ​​connection with a snap-fit ​​assembly 111. In some embodiments, the heating relay 214 may be fixed by the snap-fit ​​assembly 111 cooperating with an elastic member 112. In some embodiments, the side of the heating relay 214 facing the second housing 12 and the battery management system mainboard 40 may be electrically connected to the battery management system mainboard 40, and thus, may be controlled by the battery management system mainboard 40.

[0052] The fuse may include a main fuse 22 mounted on the side of the first housing 11 facing the second housing 12 and the battery management system mainboard 40. The main fuse 22 may be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection or bonding. In some embodiments, the main fuse 22 may be mounted in the main fuse mounting area 1012. In some embodiments, the main fuse 22 may be mounted on the side of the mounting platform 113 facing the connection area 102 and may be electrically connected to the electrical connector 30. The mounting platform 113 can make full use of the space in the direction from the first housing 11 to the second housing 12 to mount the main fuse 22, thereby reducing the overall size of the power distribution unit 100, facilitating the vertical placement of the main fuse 22, and also facilitating quality inspection.

[0053] The fuse may include a branch fuse 24 mounted on the side of the first housing 11 facing the second housing 12 and the battery management system mainboard 40. The branch fuse 24 can be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection, or adhesive bonding. In some embodiments, the branch fuse 24 may be mounted in the branch fuse mounting area 1014. In some embodiments, one end of the branch fuse 24 may be mounted on a support platform 115, and the other end may be mounted on the first housing 11, thereby raising the branch fuse 24 by the support platform 115, improving installation efficiency and providing convenience for maintenance. In some embodiments, there may be multiple branch fuses 24, with adjacent two separated by an insulating isolator 116, providing electrical isolation and preventing the wire harness ring terminals from rotating and electrically connecting to the branch fuse 24. In some embodiments, the branch fuse 24 may be used as needed and designed into the circuit of the power distribution unit 100. For example, it may be electrically connected to the electrical connector 30.

[0054] The shunt 23 can be fixed to the first housing 11 by means of screwing, welding, plugging, snap-fit ​​connection or bonding. In some embodiments, the shunt 23 can be installed in the shunt mounting area 1013. In some embodiments, the shunt 23 is installed on the side of the assembly table 114 facing the connection area 102 and can be electrically connected to the electrical connector 30. The assembly table 114 can make full use of the space in the direction from the first housing 11 to the second housing 12 to install the shunt 23, which reduces the overall size of the power distribution unit 100, facilitates the vertical placement of the shunt 23, and facilitates quality inspection.

[0055] Electrical connector 30 may be disposed in connection area 102 to realize circuit connection of power distribution unit 100. Of course, electrical connector 30 may also extend into mounting area 101 to realize circuit connection of power distribution unit 100. Electrical connector 30 may include conductive structures such as sheet-like body, wire, column-like body, bolt and nut mating body, and connection terminal assembly, and may be specifically configured according to the technology known in the art.

[0056] Electrical connector 30 can be electrically connected to the main positive relay 211, fast charging relay 212, and main negative relay 213. In some embodiments, one end of the main positive relay 211 and one end of the fast charging relay 212 can be electrically connected to the battery, for example, the positive terminal, through electrical connector 30; one end of the main negative relay 213 can be electrically connected to the battery, for example, the negative terminal, through electrical connector 30; the main negative relay 213 cooperates with the main positive relay 211 to be connected to a load through electrical connector 30; the main negative relay 213 cooperates with the fast charging relay 212 to be connected to an external power source; and the main positive relay 211, fast charging relay 212, main negative relay 213, and heating relay 214 can all be electrically connected to the battery management system mainboard 40.

[0057] In some embodiments, the main fuse device 22 can be electrically connected between the main positive relay 211 and the battery, for example, the positive terminal, via the electrical connector 30. In some embodiments, the main fuse device 22 can be electrically connected between the fast charging relay 212 and the battery, for example, the positive terminal, via the electrical connector 30. In some embodiments, the shunt 23 can be electrically connected between the main negative relay 213 and the battery, for example, the negative terminal, via the electrical connector 30.

[0058] Please see Figure 2 The battery management system mainboard 40 may include a second housing 12 (the second housing 12 may be a structure shared by the housing assembly 10 and the battery management system mainboard 40, and will not be described in detail) and a mainboard body 41. The mainboard body 41 serves as the main structure of the battery management system mainboard 40 and undertakes the functions of the battery management system mainboard 40. The mainboard body 41 may be located on the side of the second housing 12 opposite to the first housing 11 and is electrically connected to at least some of the multiple electronic auxiliary devices, such as relays 21.

[0059] Understandably, the electrical connections between the electronic auxiliary components 20, electrical connectors 30, and battery management system mainboard 40 in the power distribution unit 100 can be achieved via connection terminal assemblies. In some embodiments, the electrical connector 30 may include connection terminal assemblies. In some embodiments, the electronic auxiliary components 20 and the electrical connector 30 are electrically connected via connection terminal assemblies. In some embodiments, the electronic auxiliary components 20 and the battery management system mainboard 40 are electrically connected via connection terminal assemblies. In some embodiments, multiple electronic auxiliary devices can be electrically connected to each other via connection terminal assemblies. In some embodiments, at least a portion of the multiple electronic auxiliary devices are electrically connected to the battery management system mainboard 40, such as the mainboard body 41, via connection terminal assemblies. In some embodiments, the electrical connector 30 connects at least a portion of the multiple electronic auxiliary devices via connection terminal assemblies.

[0060] The following describes a connection terminal assembly that can reduce the wiring harness design in the power distribution unit 100 and also minimize installation and / or manufacturing errors, enabling two devices to be electrically connected through the connection terminal assembly.

[0061] Please see Figure 5 , Figure 5This is a schematic diagram of the structure of a connection terminal assembly in some embodiments of this application. The connection terminal assembly 200 may include a female terminal 50 and a male terminal 60. The female terminal 50 and the male terminal 60 can be plugged in to achieve an electrical connection. In some embodiments, the female terminal 50 may be disposed in one of two electrically connected devices, and the male terminal 60 may be disposed in the other of two electrically connected devices, thereby achieving an electrical connection between the two devices through the female terminal 50 and the male terminal 60. In some embodiments, the female terminal 50 may be disposed on the battery management system mainboard 40, such as the mainboard body 41, and the male terminal 60 may be disposed on the relay 21. In some embodiments, the female terminal 50 may be disposed on the electrical connector 30, and the male terminal 60 may be disposed on the relay 21.

[0062] Please see Figure 5 The female terminal 50 may include a carrier housing 51 and a connector 52. The carrier housing 51 is used for detachable or fixed connection with other devices to achieve electrical connection between them, and is used to support and mount the connector 52. The connector 52 can be mounted on the carrier housing 51 and can be movably connected to the carrier housing 51 to achieve electrical connection, and can be plugged into the male terminal 60 to achieve electrical connection.

[0063] The supporting shell 51 can be a frame structure, a shell structure, or even other structures well known in the art. The supporting shell 51 can be made of a conductive material, or it can be partially made of a conductive material to achieve electrical connection with other structures.

[0064] The housing 51 may have an assembly space 5101 and a socket 5102 communicating with the assembly space 5101. The assembly space 5101 may be used to accommodate a mounting connector 52. The socket 5102 may be used to allow a male terminal 60 to be inserted into the assembly space 5101 so that the male terminal 60 can be plugged into the connector 52.

[0065] The carrier shell 51 may include a carrier body 511, which may be located around the plug body 52 and cooperate with the plug body 52 to realize the installation of the plug body 52.

[0066] In some embodiments, the carrier body 511 may have solder pins 512 for detachable or fixed connection with other devices to achieve electrical connection between them. In some embodiments, the solder pins 512 may be located on the side of the carrier body 511 opposite to the socket 5102.

[0067] In some embodiments, the support body 511 may be provided with a mounting port 5103, which communicates with the assembly space 5101. The mounting port 5103 is provided to assemble the connector 52 within the assembly space 5101. In some embodiments, the support body 511 may be provided with a limiting portion 513 at the edge of the mounting port 5103, which may abut against the connector 52 to limit the connector 52 from sliding out of the assembly space 5101 from the mounting port 5103. In some embodiments, the limiting portion 513 may be formed by bending the support body 511 into the assembly space 5101 at the edge of the mounting port 5103. In some embodiments, the mounting port 5103 may be located on the side of the support body 511 opposite to the connector 5102. In some embodiments, the support body 511 may also be provided with soldering pins 512 as described in the above embodiments at the edge of the mounting port 5103.

[0068] In some embodiments, the support body 511 is provided with a limiting groove 5104 in the assembly space 5101 to cooperate with the plug body 52 and limit the plug body 52. ​​In some embodiments, the limiting groove 5104 may be a blind groove. In some embodiments, the limiting groove 5104 may extend in a first direction intersecting the insertion direction of the male terminal 60, so that the plug body 52 can slide in the limiting groove 5104 along the first direction. That is, the limiting groove 5104 may also be replaced by a guide structure such as a slide rail or guide rail, so that the plug body 52 can slide in the first direction. In some embodiments, the limiting groove 5104 may cooperate with the limiting part 513 to limit the plug body 52. ​​In some embodiments, the plug body 52 may be limited only by the limiting groove 5104. In some embodiments, the plug body 52 may be limited only by the guide structure. In some embodiments, the first direction may be perpendicular to the insertion direction of the male terminal 60.

[0069] Please see Figure 5 The connector 52 can be a frame structure, a shell structure, or even other structures well known in the art. The connector 52 can be made of a conductive material, or it can be partially made of a conductive material to achieve electrical connection with other structures.

[0070] The connector 52 may be located within the assembly space 5101 and corresponding to the socket 5102, so that when the male terminal 60 is inserted into the assembly space 5101 from the socket 5102, the connector 52 is plugged into the male terminal 60 to achieve electrical connection. In some embodiments, the connector 52 may be slidably connected to the carrier housing 51, such as the carrier body 511, in the first direction, and the connector 52 may maintain the plugged state with the male terminal 60 during sliding, and may also maintain the electrical connection state between the connector 52 and the carrier body 511. It is understood that the fit between the connector 52 and the carrier housing 51, such as the carrier body 511, can minimize installation errors and / or processing errors in the first direction.

[0071] The connector 52 may have an insertion space 5201. When the connector 52 is inserted into the male terminal 60, the male terminal 60 can be inserted into the insertion space 5201. In some embodiments, with the male terminal 60 placed in the socket 5102 and the insertion space 5201, the connector 52 abuts against the male terminal 60, and the insertion space 5201 is configured to allow the male terminal 60 to slide in a second direction. The second direction may intersect with the insertion direction of the male terminal 60. In some embodiments, the second direction intersects with a first direction. In some embodiments, the plane containing the second direction and the first direction may intersect with the insertion direction of the male terminal 60. In some embodiments, the plane containing the second direction and the first direction may be perpendicular to the insertion direction of the male terminal 60. In some embodiments, the second direction may be perpendicular to the first direction. In some embodiments, the male terminal 60 may be slidably connected to the connector 52 in the second direction, and the connector 52 and the male terminal 60 may remain in the inserted state during sliding.

[0072] Understandably, the fit between the connector 52 and the male terminal 60 can minimize installation and / or manufacturing errors in the second direction. Furthermore, it can minimize installation and / or manufacturing errors in the planes containing the female terminal 50 and the male terminal 60 in the second and first directions.

[0073] Please see Figure 6 , Figure 7 and Figure 8 , Figure 6 for Figure 5 A schematic diagram of the connector 52 in the illustrated embodiment. Figure 7 for Figure 5 The illustrated embodiment shows a cross-sectional view of the connector 52 in some embodiments. Figure 8 for Figure 5 The illustrated embodiment shows a cross-sectional view of the connector 52 in other embodiments. The connector 52 may include a connector body 521, a first spring assembly 522, and a second spring assembly 523. The connector body 521 may be disposed within the assembly space 5101 and may be limited by the carrier housing 51. In some embodiments, the connector body 521 may be limited by a limiting portion 513 to prevent it from sliding out of the assembly space 5101 from the mounting opening 5103. The first spring assembly 522 and the second spring assembly 523 may be spaced apart in a first direction, and an insertion space 5201 may be formed between the first spring assembly 522 and the second spring assembly 523. Furthermore, when the male terminal 60 is placed in the socket 5102 and the insertion space 5201, the first spring assembly 522 and / or the second spring assembly 523 elastically abut against the male terminal 60, and the insertion space 5201 is configured to allow the male terminal 60 to slide in a second direction.

[0074] The insertion body 521 may be provided with a snap-fit ​​portion 524, which extends into the limiting groove 5104 to limit the insertion body 521 by the support shell 51, such as the support body 511, thereby preventing the insertion body 521 from sliding out of the insertion port 5102 into the assembly space 5101. In some embodiments, the snap-fit ​​portion 524 may be provided on opposite sides of the insertion body 521 in a second direction. In some embodiments, the snap-fit ​​portion 524 may slide in the limiting groove 5104 in a first direction. In some embodiments, one end of the snap-fit ​​portion 524 is connected to the insertion body 521 and is bent towards the side near the insertion port 5102 to limit the insertion body 521 from sliding out of the insertion port 5102 into the assembly space 5101 within the limiting groove 5104.

[0075] Understandably, the way the plug-in body 521 and the carrier shell 51, such as the carrier body 511, cooperate allows the setting position of the snap-fit ​​part 524 to be interchanged with the setting position of the limiting groove 5104. Thus, the limiting groove 5104 can be set on the plug-in body 521, while the snap-fit ​​part 524 is set on the carrier shell 51, such as the carrier body 511.

[0076] In some embodiments, the insertion body 521 may have a notch corresponding to the position of the limiting portion 513 to accommodate the limiting portion 513, thereby achieving mutual positioning between the insertion body 521 and the support shell 51, such as the support body 511. It is understood that, in order to cooperate with the insertion body 521, the limiting portion 513 may also be provided at the edge of the insertion port 5102. Furthermore, it may cooperate with the limiting groove 5104.

[0077] The insertion body 521 has elastic limiting portions 525 on opposite sides in the first direction. The elastic limiting portions 525 can abut against the support shell 51, such as the support body 511, within the assembly space 5101 to achieve repositioning of the insertion body 521 in the first direction. In some embodiments, the elastic limiting portions 525 may also be provided on the support shell 51, such as the support body 511. In some embodiments, the elastic limiting portions 525 may also be provided on the support shell 51, such as the support body 511, and not on the insertion body 521.

[0078] Both the first spring assembly 522 and the second spring assembly 523 may include at least one elastic sheet. In either the first spring assembly 522 or the second spring assembly 523, at least one elastic sheet may be arranged in a second direction to achieve sufficient contact with the male terminal 60. In some embodiments, in either the first spring assembly 522 or the second spring assembly 523, at least one elastic sheet may be spaced apart or connected in a second direction. In some embodiments, one end of the elastic sheet is connected to the insertion body 521 and extends away from the socket 5102. In some embodiments, the elastic sheet may be disposed at the edge of the socket 5102 to make the insertion body 52 more rounded at the socket 5102, facilitating the insertion of the male terminal 60. In some embodiments, the elastic sheet may include an elastic arm 5231 and an abutment portion 5232. The abutment portion 5232 is used to abut against the male terminal 60. The elastic arm 5231 is connected to the abutment portion 5232 and protrudes outward into the assembly space 5101 so that the plug body 52 is more rounded at the socket 5102, making it easier to accept the insertion of the male terminal 60.

[0079] Please see Figure 5 The male terminal 60 can be a columnar structure, a sheet structure, or other structures. The male terminal 60 can be inserted into the insertion space 5201 from the socket 5102. The elastic tabs in the first spring assembly 522 and / or the second spring assembly 523 elastically abut against the male terminal 60, and the insertion space 5201 is configured to allow the male terminal 60 to slide in a second direction. The male terminal 60 can slide in the first direction and / or the second direction to minimize installation errors and / or processing errors in the first direction.

[0080] Please see Figure 5 The male terminal 60 can slide in a first direction, pressing against the first spring assembly 522 (e.g., an elastic sheet), causing the first spring assembly 522 (e.g., the elastic sheet) to elastically deform and maintain an electrical connection with the male terminal 60. Simultaneously, the second spring assembly 523 (e.g., an elastic sheet) elastically recovers, maintaining an electrical connection with the male terminal 60. At the same time, the elastic limiting portion 525, located on the same side as the first spring assembly 522 on the insertion body 521, also elastically deforms under the pressure of the support shell 51 (e.g., the support body 511) and the insertion body 521, making room for the insertion body 521. The elastic limiting portion 525, not located on the same side as the first spring assembly 522 on the insertion body 521, elastically recovers and maintains contact with the support shell 51 (e.g., the support body 511). The snap-fit ​​portion 524 and the limiting groove 5104 can restrict the insertion body 521. When the male terminal 60 is pulled out of the assembly space 5101, the elastic limiting part 525 causes the insertion body 521 to return to its original position.

[0081] Please see Figure 5The male terminal 60 can slide in a first direction, pressing against the second spring assembly 523 (e.g., an elastic sheet), causing the second spring assembly 523 (e.g., the elastic sheet) to elastically deform and maintain an electrical connection with the male terminal 60. Simultaneously, the first spring assembly 522 (e.g., an elastic sheet) elastically recovers, maintaining an electrical connection with the male terminal 60. At the same time, the elastic limiting portion 525, located on the same side of the insertion body 521 as the second spring assembly 523, also elastically deforms under the pressure of the support shell 51 (e.g., the support body 511) and the insertion body 521, making room for the insertion body 521. The elastic limiting portion 525, not located on the same side of the insertion body 521 as the second spring assembly 523, elastically recovers and maintains contact with the support shell 51 (e.g., the support body 511). The snap-fit ​​portion 524 and the limiting groove 5104 restrict the insertion body 521. When the male terminal 60 is pulled out of the assembly space 5101, the elastic limiting part 525 causes the insertion body 521 to return to its original position.

[0082] Please see Figure 5 The male terminal 60 can slide in the second direction and slide in the gap between the first spring assembly 522 and the second spring assembly 523, while maintaining the electrical connection between the first spring assembly 522 (e.g., the elastic sheet) and the male terminal 60, and maintaining the electrical connection between the second spring assembly 523 (e.g., the elastic sheet) and the male terminal 60.

[0083] This invention replaces the grounding harness electrical connection scheme in the power distribution unit 100 as much as possible with the connection terminal assembly 200. At the same time, considering that there are certain dimensional tolerances in the assembly process of the power distribution unit 100 and the processing errors of various structures in the power distribution unit 100, a reliable connection is achieved by adjusting on the plane of the first direction and the second direction, which provides a basis for the automated assembly of the power distribution unit 100.

[0084] In addition, the installation of the connection terminal assembly 200 can reduce the structure of bolted connections within the power distribution unit 100 and improve production efficiency.

[0085] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0086] Meanwhile, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this application do not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0087] Furthermore, unless expressly stated in the claims, the order of elements and sequences processed in this application, the use of numbers and letters, or the use of other names are not intended to limit the order of the processes and methods of this application. Although some embodiments that are currently considered useful have been discussed through various examples in the foregoing disclosure, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments; rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, while the system components described above can be implemented by hardware devices, they can also be implemented solely by software solutions, such as installing the described system on existing servers or mobile devices.

[0088] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0089] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples by the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in this application are approximate values, which may be changed according to the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit preservation. Although the numerical ranges and parameters used to confirm their breadth of range in some embodiments of this application are approximate values, in specific embodiments, such numerical values ​​are set as precisely as feasible.

[0090] For each patent, patent application, patent application publication, and other material such as articles, books, applications, publications, and documents referenced in this application, the entire contents of that patent are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this application, as well as documents that limit the broadest scope of the claims in this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0091] Finally, it should be understood that the embodiments in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. A female terminal block, characterized in that, The female terminal includes a carrier shell and a plug body. The plug body is used to plug into the male terminal. The carrier shell has an assembly space and a socket communicating with the assembly space. The plug body is located in the assembly space and is arranged corresponding to the socket. The plug body is slidably connected to the carrier shell in a first direction and has a first spring assembly and a second spring assembly arranged opposite to each other in the first direction. An insertion space extending in a second direction is formed between the first spring assembly and the second spring assembly. When the male terminal is placed in the socket and the insertion space, the first spring assembly and / or the second spring assembly elastically abut against the male terminal, and the insertion space is configured to allow the male terminal to slide in the second direction.

2. The female terminal according to claim 1, characterized in that, The connector has snap-fit ​​parts on opposite sides in the second direction. The carrier shell has a limiting groove in the assembly space. The snap-fit ​​parts are placed in the limiting groove to limit the connector from sliding out of the socket in the assembly space. The limiting groove is configured to allow the snap-fit ​​parts to slide in the first direction.

3. The female terminal according to claim 2, characterized in that, The connector includes a connector body, the first spring contact assembly and the second spring contact assembly, and the snap-fit ​​part are all disposed on the connector body. One end of the snap-fit ​​part is connected to the connector body and is bent towards the side close to the socket to limit the connector body from sliding out of the socket into the assembly space within the limiting groove.

4. The female terminal according to claim 3, characterized in that, The support shell is provided with an installation port that communicates with the assembly space. The installation port and the insertion port are located on opposite sides of the support shell. The edge of the installation port is provided with a limiting part, which abuts against the insertion body to limit the insertion body from sliding out of the assembly space from the installation port.

5. The female terminal according to claim 1, characterized in that, The connector has limiting grooves on opposite sides in the second direction. The bearing shell has a snap-fit ​​part in the assembly space. The snap-fit ​​part is placed in the limiting groove to limit the connector from sliding out of the assembly space from the socket. The limiting groove is configured to allow the snap-fit ​​part to slide in the first direction.

6. The female terminal according to any one of claims 1-5, characterized in that, The support shell has welding pins on the side opposite to the socket.

7. The female terminal according to any one of claims 1-5, characterized in that, The connector has elastic limiting portions on opposite sides in the first direction, and the elastic limiting portions abut against the bearing shell.

8. The female terminal according to any one of claims 1-5, characterized in that, The bearing shell is provided with elastic limiting portions on the first direction and on the opposite sides of the plug body, and the elastic limiting portions abut against the plug body.

9. The female terminal according to any one of claims 3-4, characterized in that, The first spring assembly and the second spring assembly are both disposed on the plug-in body. Each of the first spring assembly and the second spring assembly includes an elastic sheet. One end of the elastic sheet is connected to the plug-in body and extends away from the plug-in port.

10. The female terminal according to any one of claims 1-2 and 5, characterized in that, The connector includes a connector body, and the first spring contact assembly and the second spring contact assembly are both disposed on the connector body. Each of the first spring contact assembly and the second spring contact assembly includes an elastic sheet. One end of the elastic sheet is connected to the connector body and extends away from the socket.

11. The female terminal according to claim 10, characterized in that, The elastic sheet includes an elastic arm and an abutment portion. The abutment portion is used to abut against the male terminal. The elastic arm is connected to the abutment portion and protrudes outward toward the assembly space.

12. A connection terminal assembly, characterized in that, Includes a male terminal and a female terminal as described in any one of claims 1-11, wherein, with the male terminal placed in the socket and the insertion space, the first spring assembly and / or the second spring assembly elastically abut against the male terminal, and the insertion space is configured to allow the male terminal to slide in the second direction.

13. A power distribution unit, characterized in that, The device includes a battery management system main board, multiple electronic auxiliary devices, and electrical connectors. At least some of the multiple electronic auxiliary devices are electrically connected to the battery management system main board, and the electrical connectors are electrically connected to at least some of the multiple electronic auxiliary devices. The power distribution unit is configured to be electrically connected to a power source and a load through the electrical connectors. Wherein, at least some of the plurality of electronic auxiliary devices are electrically connected to the battery management system motherboard via the connection terminal assembly as described in claim 12; And / or, the electrical connector is connected to at least a portion of the plurality of electronic auxiliary devices via the connection terminal assembly of claim 12.

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