Connector and charge / discharge system

Abstract

The utility model relates to the technical field of battery cell electricity supplement, in particular to a connector and a charging and discharging system, and the connector comprises a shell, a rotating part, a jacking part and a contact part; the rotating part is rotatably mounted in the shell; the jacking part can be mounted in the shell in a linear reciprocating motion manner; one end of the jacking part can penetrate out of the shell, and the side wall is in transmission connection with the side wall of the rotating part; the contact part is installed on the shell and is suitable for being electrically connected with a terminal of the charging and discharging machine. When the rotating part rotates, one end of the jacking part can be driven to penetrate out of the shell, so that the penetrating-out end of the jacking part abuts against the supporting object, and the contact part abuts against the pole of the battery cell. Therefore, the contact part can be tightly attached to the pole of the battery cell, so that the stability when the lead led out of the charging and discharging motor terminal is connected with the pole of the battery cell is improved, and the safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core charging, and in particular to a connector and a charging and discharging system. Background Art

[0002] A battery pack consists of hundreds of cells connected in series. During charging, when the highest-voltage cell reaches its upper charge limit, charging stops, leaving the remaining cells uncharged. During discharging, when the lowest-voltage cell reaches its lower discharge limit, discharging stops, leaving remaining charge in the remaining cells. Therefore, the consistency of the state of charge (SOC) between cells within a battery pack significantly impacts the overall charge and discharge performance. As the battery pack ages, the SOC differences between cells increase, leading to cell outliers. This can cause a sharp decrease in vehicle range and increased SOC estimation errors. Therefore, it is necessary to recharge outlier cells within the battery pack to reduce SOC differences and ensure vehicle range.

[0003] When recharging a battery cell with a charger, the wires leading from the charger terminals are typically welded or bonded to the battery cell poles, making assembly and disassembly inconvenient and posing safety risks. Alternatively, alligator clips are used to connect the wires from the charger terminals to the battery cell poles. However, the battery cell poles often lack contact points, making the alligator clips susceptible to detachment. Therefore, improving the stability of the connection between the wires leading from the charger terminals and the battery cell poles has become a pressing issue for those skilled in the art. Utility Model Content

[0004] The utility model provides a connector and a charging and discharging system, which are used to solve the problem of how to improve the stability of the connection when a wire led out from a charging and discharging machine terminal is connected to a pole of a battery core.

[0005] In one aspect, the present invention provides a connector, comprising:

[0006] case;

[0007] A rotating part is rotatably mounted in the housing;

[0008] The tightening part is installed in the shell for linear reciprocating motion, one end of which can pass through the shell, and the side wall of which is transmission-connected with the side wall of the rotating part;

[0009] The contact portion is mounted on the housing and is suitable for electrically connecting to the terminals of the charger and discharger;

[0010] When the rotating part rotates, one end of the pressing part can be driven to pass through the shell, so that the passing end of the pressing part presses against the support and the contact part presses against the pole of the battery cell.

[0011] In some embodiments, a locking member is provided on the rotating portion; the locking member can be connected to or disconnected from the housing to restrict the rotation of the rotating portion or release the restriction.

[0012] In some embodiments, the locking member is a latch; a plurality of insertion holes are circumferentially arranged on the housing; and any insertion hole is adapted to fit the latch.

[0013] In some embodiments, the axis of the rotating portion is vertically arranged, and a driving member is provided at the top end.

[0014] In some embodiments, the axis of the pressing portion and the axis of the rotating portion are perpendicular to each other;

[0015] The side wall of the pressing portion is provided with meshing teeth in the axial direction, or the side wall is provided with a rack with meshing teeth in the axial direction;

[0016] Meshing teeth are arranged on the side wall of the rotating part along the circumferential direction, or a gear ring with meshing teeth is arranged on the side wall along the circumferential direction.

[0017] In some embodiments, a clearance hole is provided at one end of the shell for the tightening portion to pass through; and the contact portion is mounted at the end of the shell opposite to the end having the clearance hole.

[0018] In some embodiments, the contact portion includes:

[0019] Contact terminal, suitable for pressing against the pole;

[0020] One end of the wire is fixed to the contact terminal, and the other end is suitable for electrical connection with the terminal of the charger and discharger.

[0021] In some embodiments, further comprising:

[0022] The shaft sleeve is installed in the shell, and the inner wall thereof contacts the side wall of the tightening portion.

[0023] In some embodiments, further comprising:

[0024] The bearing is installed in the housing, and the inner wall is fixedly connected to the side wall of the rotating part.

[0025] On the other hand, the present invention also provides a charging and discharging system, comprising the connector provided by any of the above embodiments.

[0026] The beneficial effects of the present invention are as follows: The connector of the present invention is provided with a shell, and the shell can protect the rotating part and the pressing part, thereby extending their service life. The rotating part can be rotatably installed in the shell, and the rotating part can be driven to rotate by manpower or a driving motor. The pressing part can be installed in the shell for linear reciprocating motion. When the rotating part rotates, one end of the pressing part can be driven to pass through the shell, so that the protruding end of the pressing part is pressed against the support, and the contact part is pressed against the pole of the battery cell. In this way, the contact part can be tightly fitted on the pole of the battery cell, thereby improving the stability of the wires led out from the terminals of the charger and discharger when connected to the pole of the battery cell, thereby ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the internal structure of some specific embodiments of a connector of the utility model;

[0028] Figure 2 yes Figure 1 A schematic diagram of the top surface of the housing in the connector is shown.

[0029] In the accompanying drawings, 110 is the housing; 111 is the socket; 120 is the rotating part; 121 is the locking part; 122 is the driving part; 123 is the ring gear; 130 is the tightening part; 131 is the rack; 140 is the contact part; 141 is the contact terminal; 142 is the wire; 150 is the bushing; 160 is the bearing; 200 is the support; 300 is the pole of the battery cell. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] As mentioned in the background art, when a battery cell is recharged with the aid of a charger / discharger, the wires leading from the charger / discharger terminals are usually welded or bonded to the poles of the battery cell, which makes assembly and disassembly inconvenient and poses a safety risk. Alternatively, alligator clips are used to connect the wires leading from the charger / discharger terminals to the poles of the battery cell. However, the poles of the battery cell are often not provided with a snap-on contact point, making the alligator clips easily fall off the poles. Therefore, how to improve the stability of the connection between the wires leading from the charger / discharger terminals and the poles of the battery cell has become a problem that technicians in this field urgently need to solve.

[0032] To solve the above problems, refer to Figure 1 and Figure 2On the one hand, the utility model provides a connector, including a shell 110, a rotating part 120, a tightening part 130 and a contact part 140. The shell 110 can protect the rotating part 120 and the tightening part 130, thereby extending their service life. The rotating part 120 is in the shape of an elongated strip and can be rotatably installed in the shell 110. The rotating part 120 can be rotated by manpower or a driving motor. The tightening part 130 is in the shape of an elongated strip and can be installed in the shell 110 for linear reciprocating motion. One end of the tightening part 130 can pass through the shell 110, and the side wall is transmission-connected to the side wall of the rotating part 120. The contact part 140 is installed on the shell 110 and is suitable for electrical connection with the terminals of the charger and discharger. When the rotating portion 120 rotates, it can drive one end of the pressing portion 130 to pass through the housing 110, so that the protruding end of the pressing portion 130 presses against the support 200, and the contact portion 140 presses against the battery cell's terminal 300. This allows the contact portion 140 to fit tightly against the battery cell's terminal 300, improving the stability of the connection between the wire 142 extending from the charger and discharger terminal and the battery cell's terminal 300, thereby ensuring safety.

[0033] It should be noted that the contact portion 140 can be electrically connected to the positive / negative terminal of the charger / discharger. Accordingly, the contact portion 140 presses against the positive / negative electrode of the battery cell. To recharge the cells within the battery pack, the support 200 can be a side beam of the battery pack or an adjacent battery cell module.

[0034] Specifically, in the exemplary embodiment, a locking member 121 is provided on the rotating portion 120. The locking member 121 can be connected or disconnected with the housing 110. When the locking member 121 is connected to the housing 110, it can restrict the rotation of the rotating portion 120. When the locking member 121 is disconnected from the housing 110, the restriction can be released, allowing the rotating portion 120 to rotate. The provision of the locking member 121 can effectively prevent the rotating portion 120 from spontaneously rotating, thereby preventing the contact portion 140 from spontaneously separating from the battery cell's pole 300.

[0035] It should be noted that, for the rotating part 120 with a vertical axis, the locking member 121 can be detachably installed at the bottom, middle or top of the rotating part 120. Of course, the locking member 121 can also be non-detachably installed at the bottom, middle or top of the rotating part 120.

[0036] In some embodiments, the locking member 121 is a latch. A plurality of sockets 111 are circumferentially provided on the shell 110. Any socket 111 is adapted to the latch and can be inserted therein to limit the rotation of the rotating portion 120. Specifically, a limiting groove is provided on the upper portion of the side wall of the rotating portion 120. A plurality of sockets 111 are evenly provided circumferentially at the top end of the shell 110. The latch has an overall "L"-shaped structure, one end of which can be inserted into the limiting groove, and the other end of which can be inserted into any socket 111. In this way, the convenience of connecting and disconnecting the locking member 121 from the shell 110 is ensured.

[0037] In other embodiments, the locking member 121 is a locking nut that fits over the top of the rotating portion 120, with its bottom end abutting against the top of the housing 110 to restrict rotation of the rotating portion 120. When the bottom end of the locking nut is released from the top of the housing 110, the rotating portion 120 can rotate. This ensures convenient connection and disconnection of the locking member 121 from the housing 110.

[0038] In yet other embodiments, the locking member 121 is a bendable elastic strip. Multiple insertion holes 111 are uniformly distributed along the circumference of the top of the housing 110. One end of the elastic strip is fixed to the side wall of the rotating portion 120, and the other end can be inserted into any of the insertion holes 111. This ensures convenient connection and disconnection of the locking member 121 from the housing 110.

[0039] Specifically, in this example, the axis of the rotating portion 120 is vertically arranged, and a driving member 122 is disposed at the top. Driving member 122 is used to drive the rotating portion 120 to rotate. Driving member 122 can be an operating handle to facilitate manual rotation of the rotating portion 120. Driving member 122 can also be a coupling connected to the output shaft of a drive motor to facilitate the drive motor to drive the rotating portion 120 to rotate.

[0040] Specifically, in this exemplary embodiment, the axis of the pressing portion 130 is perpendicular to the axis of the rotating portion 120. That is, the axis of the pressing portion 130 is arranged horizontally. Meshing teeth are axially disposed on the front sidewall of the pressing portion 130, or meshing teeth are axially disposed on the rear sidewall, or a rack 131 with meshing teeth is axially disposed on the front sidewall, or a rack 131 with meshing teeth is axially disposed on the rear sidewall. Accordingly, the rotating portion 120 is located on the front or rear side of the pressing portion 130, and meshing teeth are circumferentially disposed on the top, middle, or bottom of the sidewall of the rotating portion 120, or a gear ring 123 with meshing teeth is circumferentially disposed on the top, middle, or bottom of the sidewall. The meshing teeth on the rotating portion 120 cooperate with the meshing teeth on the pressing portion 130, driving the pressing portion 130 to perform linear reciprocating motion when the rotating portion 120 rotates, thereby ensuring motion accuracy.

[0041] Specifically, in the exemplary embodiment, a clearance hole is opened at one end of the housing 110 for the pressing portion 130 to pass through. The contact portion 140 is installed at the end of the housing 110 opposite to the end with the clearance hole, so that the contact portion 140 presses against the end surface of the battery cell's pole 300.

[0042] Specifically, in this example, contact portion 140 includes a contact terminal 141 and a wire 142. Contact terminal 141 is fixed to the end of housing 110 opposite the end with the clearance hole, and is adapted to press against the end surface of the positive or negative electrode. One end of wire 142 is fixed to contact terminal 141, and the other end is adapted to electrically connect to the positive or negative terminal of the charger / discharger. Contact terminal 141 is made of a metal material such as gold, silver, or copper, which has good electrical conductivity.

[0043] Specifically, in the exemplary embodiment, the connector further includes a sleeve 150 and a bearing 160. The sleeve 150 is installed in the housing 110, and its inner wall contacts the side wall of the tightening portion 130 to reduce the wear suffered by the tightening portion 130 during linear reciprocating motion. At the same time, it guides the movement direction of the tightening portion 130. The bearing 160 is installed in the housing 110, and its inner wall is fixedly connected to the side wall of the rotating portion 120. On the one hand, it supports the rotating portion 120; on the other hand, it reduces the wear suffered by the rotating portion 120 during rotation and improves the smoothness of rotation.

[0044] Specifically, in the exemplary embodiment, the shell 110 includes an upper shell 110 and a lower shell 110. The axis of the upper shell 110 is vertically arranged, and the axis of the lower shell 110 is horizontally arranged. The bottom end of the upper shell 110 is fixedly mounted on the top surface of the upper shell 110. The rotating part 120 is passed through the upper shell 110. The tightening part 130 is passed through the lower shell 110. A clearance hole for the tightening part 130 to pass through is provided at one end of the lower shell 110, and a contact terminal 141 is fixed at the other end. The sleeve 150 is installed in the lower shell 110. The bearing 160 is installed in the upper shell 110. A plurality of jacks 111 are evenly arranged at the top of the upper shell 110 along the circumference. The upper shell 110 can protect the rotating part 120 and the bearing 160, thereby extending their service life. The lower shell 110 can protect the tightening part 130 and the sleeve 150, thereby extending their service life.

[0045] Preferably, the upper shell 110 , the lower shell 110 and the rotating part 120 are made of insulating materials such as plastic to improve operational safety.

[0046] In another aspect, the present invention further provides a charging and discharging system comprising a charger and discharger, a battery cell, and the connector provided by any of the aforementioned embodiments. The connector's contact portion 140 is electrically connected to the charger and discharger terminal and is capable of pressing against the end face of the battery cell's pole 300, allowing the contact portion 140 to fit tightly against the battery cell's pole 300. This improves the stability of the connection between the wire 142 extending from the charger and discharger terminal and the battery cell's pole 300, thereby ensuring safety.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0048] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A connector, characterized in that: include: case; A rotating part, rotatably mounted in the housing; The tightening part is installed in the shell for linear reciprocating motion, one end of which can pass through the shell, and the side wall of which is drivingly connected with the side wall of the rotating part; A contact portion, mounted on the housing, adapted to be electrically connected to a terminal of a charger and discharger; When the rotating part rotates, one end of the pressing part can be driven to pass through the shell, so that the passing end of the pressing part presses against the support, and the contact part presses against the pole of the battery cell.

2. The connector according to claim 1, characterized in that: The rotating part is provided with a locking piece; the locking piece can be connected to or disconnected from the shell to restrict the rotating part from rotating or release the restriction.

3. The connector according to claim 2, characterized in that: The locking member is a latch; a plurality of insertion holes are arranged circumferentially on the shell; any of the insertion holes is matched with the latch.

4. The connector according to any one of claims 1 to 3, characterized in that: The axis of the rotating part is arranged vertically, and a driving member is arranged at the top end.

5. The connector according to any one of claims 1 to 3, characterized in that: The axis of the tightening portion and the axis of the rotating portion are perpendicular to each other; The side wall of the tightening portion is provided with meshing teeth in the axial direction, or the side wall is provided with a rack having the meshing teeth in the axial direction; The side wall of the rotating part is provided with meshing teeth along the circumferential direction, or the side wall is provided with a gear ring having the meshing teeth along the circumferential direction.

6. The connector according to any one of claims 1 to 3, characterized in that: One end of the shell is provided with a clearance hole for the pressing part to pass through; the contact part is installed at the end of the shell opposite to the end provided with the clearance hole.

7. The connector according to any one of claims 1 to 3, characterized in that: The contact portion comprises: A contact terminal, adapted to be pressed against the pole; A wire has one end fixed on the contact terminal and the other end suitable for being electrically connected to the terminal of the charger and discharger.

8. The connector according to any one of claims 1 to 3, characterized in that: Also includes: The shaft sleeve is installed in the housing, and the inner wall of the shaft sleeve contacts the side wall of the tightening part.

9. The connector according to any one of claims 1 to 3, characterized in that: Also includes: The bearing is installed in the housing, and the inner wall is fixedly connected to the side wall of the rotating part.

10. A charging and discharging system, characterized in that: A connector comprising any one of claims 1 to 9.

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