Connection terminal structure and automobile thereof

Abstract

The utility model relates to the technical field of new energy automobiles, in particular to a connecting terminal structure and an automobile thereof. A connection terminal structure comprises a female terminal and a male terminal, the female terminal comprises a mounting seat and a plurality of elastic sheets, the plurality of elastic sheets are connected with the mounting seat and are arranged at intervals along a first direction of the mounting seat, and a first pin is arranged on one side, far away from the elastic sheets, of the mounting seat and is used for being connected with a power battery mainboard; one end of the male terminal is contacted with at least one elastic sheet, and the other end is connected with a power battery relay copper bar. The wiring harness connector has the advantages that the female terminal and the male terminal are both of rigid structures, so that the female terminal and the male terminal can be grabbed by an automatic manipulator conveniently and stably, and the wiring harness connector is lower in cost compared with a wiring harness. The plurality of elastic sheets are connected with the mounting seat, so that the male terminal can be electrically connected with the female terminal when being connected with any elastic sheet, the power battery mainboard is electrically connected with the power battery relay copper bar, and the problem of tolerance between the male terminal and the female terminal is solved.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, and in particular to a connection terminal structure and its vehicle. Background Technology

[0002] The power battery is the main core component of new energy vehicles, and the BDU (Battery Drive Unit) is the core of the power battery. Its main responsibility is to convert electrical energy into mechanical energy to drive the car.

[0003] The Battery Pack Unit (BDU) consists of a Battery Management System (BMS) motherboard, electrical components, plastic parts, and copper busbars, and is responsible for battery pack charging and discharging control, status monitoring, and external communication. To ensure the consistency and quality stability of BDU assembly, automated assembly using robotic arms is particularly important in the BDU manufacturing and assembly process.

[0004] Since the BDU needs to have a voltage sampling function, a wire harness is usually used to electrically connect the BMS main board and the relay copper plate to achieve high voltage sampling and relay driving functions. One end of the wire harness is made into a ring terminal, which is tightened to each copper busbar by bolts. The other end is made into a connector to connect to the BMS. However, because the wire harness is made of a soft material, it is difficult for the robot to automatically grasp the flexible wire harness, so it is difficult to realize automated assembly by the robot. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a connection terminal structure.

[0006] A connection terminal structure for use in power batteries of new energy vehicles includes: a female terminal, comprising a mounting base and spring contacts, wherein there are multiple spring contacts, each of which is connected to the mounting base and is spaced apart along a first direction of the mounting base; the mounting base has a first pin on the side away from the spring contacts, the first pin being used to connect to the main board of the power battery; and a male terminal, one end of which contacts at least one of the spring contacts, and the other end of which is used to connect to the copper busbar of the power battery relay.

[0007] With this configuration, both the female and male terminals are rigid structures, making them easier and more stable for automated robotic arms to grasp, and also lower in cost compared to wire harnesses. The female terminal has multiple spring contacts, all of which connect to the mounting base. Therefore, connecting the male terminal to any of these spring contacts enables electrical connection to the female terminal, thus connecting the power battery motherboard and the power battery relay busbar. This solves the tolerance problem between the male and female terminals, reduces processing requirements for both, and ensures a more reliable connection. Even if the male terminal experiences shaking or bending, it can still maintain electrical connection to adjacent spring contacts.

[0008] In one embodiment, the mounting base includes multiple side plates, which are connected end to end and surround to form a contact space. The spring and the first pin are respectively connected to both sides of the side plates in a second direction.

[0009] In one embodiment, at least a portion of the plurality of spring pieces extends toward the center of the contact space.

[0010] In one embodiment, the spring includes a connecting segment and an arc segment, the connecting segment being connected to the side plate, one end of the arc segment being connected to the connecting segment, and the other end being bent toward the first pin.

[0011] In one embodiment, the arc of the arc segment is at least 180°, and the width of the arc segment in the first direction is less than the width of the connecting segment in the first direction.

[0012] In one embodiment, a plurality of spring pieces are provided on both sides of the mounting base in the third direction, and the spring pieces on both sides of the mounting base are staggered along the first direction.

[0013] In one embodiment, there are multiple first pins, and the end of the first pin furthest from the mounting base is configured as a bent structure.

[0014] In one embodiment, the male terminal has a contact section and a fixed section connected to each other. The contact section contacts the spring contact, and the fixed section has at least one second pin for connecting to the copper busbar of the power battery relay.

[0015] In one embodiment, a guide slope is provided at the end of the contact segment away from the fixed segment, and the guide slope is inclined toward the end away from the fixed segment.

[0016] This utility model also provides an automobile, including the connection terminal structure described above.

[0017] Compared to existing technologies, this invention, by setting rigid female and male terminals, facilitates the gripping of automated robotic arms and is less expensive than wire harnesses. The female terminal has multiple spring contacts, all of which are connected to the mounting base. Therefore, the male terminal can achieve electrical connection with the female terminal by connecting to any of the spring contacts, thus enabling electrical connection between the power battery motherboard and the power battery relay busbar. This solves the tolerance problem between the male and female terminals, reduces the processing requirements for both terminals, and ensures a more reliable connection. Even if the male terminal experiences shaking or bending, it can still maintain electrical connection with adjacent spring contacts. Attached Figure Description

[0018] Figure 1 A schematic diagram of one embodiment of the female terminal of the connection terminal structure provided by this utility model;

[0019] Figure 2 A schematic diagram of one embodiment of the male terminal of the connection terminal structure provided by this utility model;

[0020] Figure 3 This is a schematic diagram of one embodiment of the connection terminal structure provided by this utility model.

[0021] The symbols in the diagram represent the following meanings:

[0022] 100. Connecting terminal structure; 10. Female terminal; 11. Mounting base; 111. Side plate; 112. Contact space; 12. Spring; 121. Connecting section; 122. Arc-shaped section; 13. First pin; 131. Bending structure; 20. Male terminal; 21. Contact section; 211. Guide slope; 22. Fixing section; 221. Second pin. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figures 1-3 This utility model provides a connection terminal structure 100, including a female terminal 10 and a male terminal 20, both of which are rigid structures, which can facilitate the automatic assembly of the BDU structure of the new energy vehicle power battery to which it is applied.

[0029] A connection terminal structure 100 is applied to a power battery for new energy vehicles, comprising: a female terminal 10 and a male terminal 20. The female terminal 10 includes a mounting base 11 and spring contacts 12. There are multiple spring contacts 12, each of which is connected to the mounting base 11 and is spaced apart along a first direction of the mounting base 11. A first pin 13 is provided on the side of the mounting base 11 away from the spring contacts 12. The first pin 13 is used to connect to the main board of the power battery. One end of the male terminal 20 is in contact with at least one spring contact 12, and the other end is used to connect to the copper busbar of the power battery relay.

[0030] Thus, both the female terminal 10 and the male terminal 20 are rigid structures, making them easier and more stable for automated robotic arms to grasp, and they are also less expensive than wire harnesses. The female terminal 10 has multiple spring contacts 12. Since each spring contact 12 is connected to the mounting base 11, the male terminal 20 can achieve electrical connection with the female terminal 10 by connecting to any one of the spring contacts 12. This allows for electrical connection between the power battery motherboard and the power battery relay copper busbar, solving the tolerance problem between the male terminal 20 and the female terminal 10. The processing requirements for the male terminal 20 and the female terminal 10 are lower, and the connection is more reliable. Even if the male terminal 20 shakes or bends, it can still be electrically connected to the adjacent spring contact 12.

[0031] The mounting base 11 includes multiple side plates 111, which are connected end to end and surround a contact space 112. The spring piece 12 and the first pin 13 are respectively connected to both sides of the side plate 111 in a second direction. In this way, the manufacturing of the mounting base 11 is more convenient, and the installation and arrangement of the side plates 111, spring piece 12 and first pin 13 are also more convenient and neat.

[0032] In this embodiment, multiple side plates 111 surround a mounting base 11 forming a rectangular structure, so the contact space 112 is also set to be rectangular. The spring piece 12 is connected to the two side plates 111 arranged opposite to each other. The first pin 13 is set to four and is respectively set at the four corners of the mounting base 11 which has a rectangular structure, so as to provide higher connection strength.

[0033] Please refer to [link / reference needed] for further explanation. Figure 3 In this embodiment, the first direction refers to the length direction of the mounting base 11, the second direction refers to the thickness direction of the mounting base 11, and the third direction refers to the width direction of the mounting base 11.

[0034] Of course, in another embodiment, the mounting base 11 can also be connected by two symmetrically arranged mounting plates. The two mounting plates can be connected by welding, bonding, or snap-fitting. For example, a snap-fit ​​protrusion is provided on one mounting base 11, and a snap-fit ​​groove is provided on the other mounting base 11, so that the two are tightly connected by the cooperation of the snap-fit ​​protrusion and the snap-fit ​​groove.

[0035] Specifically, in this embodiment, the pins are soldered to the power battery motherboard BMC, and the pins extend into the openings on the power battery motherboard BMC to increase the limiting effect.

[0036] Preferably, the end of the first pin 13 away from the mounting base 11 is provided with a bending structure 131, so as to be compatible with dimensional tolerances, prevent poor welding caused by the opening on the power battery motherboard being too small, improve welding reliability, and at the same time, this design can also serve as contact redundancy to ensure the stability of the electrical connection between the female terminal 10 and the motherboard.

[0037] At least a portion of the plurality of spring contacts 12 extends toward the center of the contact space 112. During contact with the female terminal 10, the male terminal 20 extends toward the contact space 112 and contacts the spring contacts 12. The extension of the spring contacts 12 toward the center of the contact space 112 facilitates their contact with the male terminal 20.

[0038] It should be explained that the middle part of the contact space 112 refers to the same position that is the same as the edge of each region of the contact space 112. In this embodiment, the contact space 112 is set as a rectangle, so the middle part of the contact space 112 refers to the position that is close to the midpoint of the length direction and the midpoint of the width direction of the contact space 112.

[0039] Of course, it is understandable that the spring 12 can also extend in other directions, as long as it can be connected to the male terminal 20, and is not limited to the structure described above.

[0040] The spring piece 12 includes a connecting section 121 and an arc-shaped section 122. The connecting section 121 is connected to the side plate 111, and one end of the arc-shaped section 122 is connected to the connecting section 121, while the other end is bent towards the first pin 13. Thus, the connecting section 121 is used to fix the spring piece 12, while the arc-shaped section 122 can improve the reliability of the contact between the spring piece 12 and the male terminal 20, enabling avoidance when contacting the male terminal 20, reducing interference when contacting the male terminal 20, and increasing the contact area with the male terminal 20.

[0041] Furthermore, the arc of the curved segment 122 is at least 180°, and the width of the curved segment 122 in the first direction is less than the width of the connecting segment 121 in the first direction. In this way, the curved segment 122 can bend at least a semicircle to extend back to the third direction, so as to ensure its fit when in contact with the male terminal 20.

[0042] Understandably, the curvature of the arc segment 122 can also be 190°, 200°, 210° or even more, as long as it can achieve connection with the male terminal 20. In this embodiment, the arc segment 122 extends at least 270°, further ensuring that the male terminal 20 can contact the arc segment 122.

[0043] The smaller width of the arc segment 122 in the first direction allows it to have a stronger deformation capacity, i.e., better elasticity, and a stronger ability to avoid contact with the male terminal 20, further reducing the occurrence of structural interference.

[0044] Multiple spring contacts 12 are provided on both sides of the mounting base 11 in the third direction. The spring contacts 12 on both sides of the mounting base 11 are staggered along the first direction. In this way, each spring contact 12 can fill the gap in the contact space 112, ensuring that the male terminal 20 is always in contact with at least one spring contact 12 when the position is offset due to processing errors.

[0045] Preferably, each spring piece 12 connected to the side plates 111 on opposite sides extends toward the other side plate 111 and slightly crosses the center line, while the spring pieces 12 connected to the side plates 111 on the same side are aligned. In this way, the side plates 111 on both sides ensure that there is no gap in the middle of the contact space 112, avoiding the problem that when the male terminal 20 is inserted perpendicularly into the middle of the contact space 112, there will be gaps between it and the spring pieces 12 on both sides.

[0046] The male terminal 20 has a contact section 21 and a fixed section 22, which are connected. The contact section 21 contacts the spring contact 12, and the fixed section 22 has at least one second pin 221 for connecting to the copper busbar of the power battery relay. In this embodiment, the second pin 221 is welded to a matching structure on the copper busbar of the power battery relay to ensure reliable positioning of the male terminal 20 during assembly and prevent misalignment of the male terminal 20. The copper busbar is perforated according to the usage requirements of different positions. During assembly in the workshop, the second pins 221 on both sides can be aligned with the holes in the copper busbar to limit the movement space of the male terminal 20, achieve precise assembly, and improve assembly efficiency.

[0047] In this embodiment, the fixing segment 22 is designed as a circular structure to facilitate processing and improve structural strength. A hole is made in the middle of the fixing segment 22 to reduce weight and material costs. In other embodiments, the fixing segment 22 can also be designed as a rectangular structure, as long as it allows the second pin 221 to be stably mounted.

[0048] Specifically, four second pins 221 are provided, and they are symmetrically distributed in pairs on both sides of the width direction of the fixed segment 22, thereby providing a more balanced connection effect.

[0049] A guide slope 211 is provided at the end of the contact segment 21 away from the fixed segment 22, and the guide slope 211 is inclined toward the end away from the fixed segment 22. The guide slope 211 can guide the contact segment 21 into the female terminal 10, realizing the smooth connection between the male terminal 20 and the female terminal 10. Preferably, the guide slope 211 is provided on both sides of the contact segment 21, and the guide slopes 211 on both sides cooperate to form a chamfer structure.

[0050] This utility model also provides an automobile, including the connection terminal structure 100 as described above.

[0051] Compared to existing technologies, this invention, by setting a rigid female terminal 10 and male terminal 20, facilitates the gripping of the device by an automated robotic arm and is less expensive than wire harnesses. The female terminal 10 has multiple spring contacts 12. Since each spring contact 12 is connected to the mounting base 11, the male terminal 20 can achieve electrical connection with the female terminal 10 by connecting to any one of the spring contacts 12. This allows for electrical connection between the power battery motherboard and the power battery relay busbar, solving the tolerance problem between the male terminal 20 and the female terminal 10. It also reduces the processing requirements for the male and female terminals 20 and makes the connection more reliable. Even if the male terminal 20 experiences shaking or bending, it can still maintain electrical connection with the adjacent spring contact 12.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A connection terminal structure, applied to power batteries for new energy vehicles, characterized in that, include: The female terminal (10) includes a mounting base (11) and a spring (12). There are multiple springs (12), each of which is connected to the mounting base (11) and is spaced apart along a first direction of the mounting base (11). The mounting base (11) has a first pin (13) on the side away from the spring (12). The first pin (13) is used to connect to the power battery main board. The male terminal (20) has one end in contact with at least one of the spring pieces (12) and the other end for connection with the copper busbar of the power battery relay.

2. The connection terminal structure according to claim 1, characterized in that, The mounting base (11) includes multiple side plates (111), which are connected end to end and surround to form a contact space (112). The spring piece (12) and the first pin (13) are respectively connected to both sides of the side plate (111) in a second direction.

3. The connection terminal structure according to claim 2, characterized in that, At least a portion of the plurality of said spring pieces (12) extends toward the center of said contact space (112).

4. The connection terminal structure according to claim 3, characterized in that, The spring piece (12) includes a connecting section (121) and an arc-shaped section (122). The connecting section (121) is connected to the side plate (111). One end of the arc-shaped section (122) is connected to the connecting section (121), and the other end is bent toward the first pin (13).

5. The connection terminal structure according to claim 4, characterized in that, The arc of the arc segment (122) is at least 180°, and the width of the arc segment (122) in the first direction is less than the width of the connecting segment (121) in the first direction.

6. The connection terminal structure according to claim 1, characterized in that, Multiple spring pieces (12) are provided on both sides of the mounting base (11) in the third direction, and the spring pieces (12) on both sides of the mounting base (11) are staggered along the first direction.

7. The connection terminal structure according to claim 1, characterized in that, There are multiple first pins (13), and the end of the first pin (13) away from the mounting base (11) is configured as a bent structure (131).

8. The connection terminal structure according to claim 1, characterized in that, The male terminal (20) has a contact section (21) and a fixed section (22), the contact section (21) and the fixed section (22) are connected, the contact section (21) contacts the spring (12), and the fixed section (22) is provided with at least one second pin (221), which is used to connect with the copper busbar of the power battery relay.

9. The connection terminal structure according to claim 8, characterized in that, The contact section (21) has a guide slope (211) at one end away from the fixed section (22), and the guide slope (211) is inclined toward the end away from the fixed section (22).

10. A car, characterized in that, Includes the connection terminal structure as described in any one of claims 1-9.

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