Connector and battery pack

Abstract

The utility model discloses a connector and a battery pack, and the connector comprises a board end plug-in which is used for being plugged on a battery module and is provided with a mounting groove; the wire end plug-in is provided with a first conducting bar inserted into the mounting groove, and the first conducting bar is used for being electrically connected with a lead-out cable between the two battery modules; one end of the second conducting bar is used for being connected with the output electrode of the battery module, and the other end of the second conducting bar is inserted into the mounting groove; and the elastic piece is arranged on the first conducting bar or in the mounting groove or on the second conducting bar, and the second conducting bar and the first conducting bar are pressed through the elastic piece so as to realize electrical connection. According to the connector, reliable transmission of current of the output electrode of the module is realized in a quick insertion manner, reliable circuit connection is ensured by arranging the elastic piece to provide pressing force, the connection manner is simple and quick, and the connection efficiency and reliability of the battery module are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, and more specifically, to a connector. In addition, the utility model also relates to a battery pack including the above connector. Background Art

[0002] The power battery pack includes a plurality of battery modules, and the output poles of each battery module are connected in series or in parallel through high-voltage wire harnesses.

[0003] In the related art, the connection between battery modules is achieved by bolt connection, busbar welding or plugging. Among them, the installation of welding and bolt connection methods is complex, and the plugging method is specifically through the movable cooperation of jacks and tongues. The method is simple, but the tongues are easily detached, resulting in unreliable connection and unable to supply power stably.

[0004] In summary, how to improve the simplicity, firmness and reliability of the connection between battery modules is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a connector, which realizes the reliable transmission of the current of the module output pole through a quick plugging method, and provides a pressing force through the setting of an elastic member to ensure a reliable circuit connection. The connection method is simple and fast, improving the connection efficiency and reliability of battery modules. Another purpose of the utility model is to provide a battery pack including the above connector.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A connector, comprising:

[0008] A board-end plug-in, which is used to be inserted on the battery module and has an installation groove;

[0009] A wire-end plug-in, which has a first conductive row inserted into the installation groove, and the first conductive row is used for electrically connecting the export cables between two battery modules;

[0010] A second conductive row, one end of the second conductive row is used to connect the output pole of the battery module, and the other end of the second conductive row is inserted into the installation groove;

[0011] An elastic member, which is located in the installation groove and is used to press the second conductive row and the first conductive row to achieve electrical connection.

[0012] Preferably, the elastic member is elastic protrusions symmetrically arranged on both side walls of the installation groove, and the sum of the thicknesses of the first conductive row and the second conductive row is greater than the distance between the two elastic protrusions.

[0013] Preferably, the board - end plug - in includes a board - end plastic shell for inserting into the battery module. A stainless - steel ring is sleeved inside the board - end plastic shell. The inner side wall of the stainless - steel ring encloses the installation groove, and there is a gap between the outer side wall of the stainless - steel ring and the inner side wall of the board - end plastic shell.

[0014] Preferably, a board - end upper cover is connected to the top of the board - end plastic shell. The board - end upper cover presses on the top of the stainless - steel ring and its notch is larger than the opening of the installation groove.

[0015] Preferably, the board - end plastic shell is also provided with a limiting part and a positioning part for clamping with the battery module. The bottom of the positioning part is lower than the bottom of the limiting part.

[0016] Preferably, the wire - end plug - in includes a wire - end plastic shell covering the board - end plastic shell. A cantilever part for clamping with the board - end plastic shell is arranged on the side of the wire - end plastic shell. A secondary locking structure is inserted into the cantilever part. The secondary locking structure is inserted into or removed from the cantilever part to drive the cantilever part to move, so as to lock or unlock the wire - end plastic shell and the board - end plastic shell.

[0017] Preferably, it includes a vertical installation groove. A top beam and a bottom beam are correspondingly arranged at the top and bottom of the vertical installation groove. After the spring hook of the board - end plastic shell is inserted into the cantilever part, it is clamped on the bottom beam.

[0018] The secondary locking structure includes a locking body. The bottom of the locking body extends outward to form a bottom cross - beam. The top of the locking body is provided with a top cross - beam opposite to the bottom cross - beam.

[0019] The secondary locking structure can move downward along the vertical direction of the vertical installation groove, so that the top cross - beam is limited below the top beam, and the bottom cross - beam abuts against the upper or lower end surface of the bottom beam to limit the movement of the spring hook.

[0020] Or, the secondary locking structure can move upward along the vertical direction of the vertical installation groove, so that the bottom cross - beam moves away from the bottom beam, and under the limiting action of the top cross - beam and the top beam, it drives the cantilever part to move to release the restriction on the spring hook.

[0021] Preferably, the wire - end plug - in includes a high - voltage wire harness arranged inside the wire - end plastic shell. The wire - end plastic shell is provided with a first limiting cavity and a second limiting cavity communicated with it.

[0022] The high-voltage wire harness includes the first conductive row disposed in the first limiting cavity. The first conductive row is connected to a wire portion for connecting the lead-out cable. The wire portion is disposed in the second limiting cavity and extends out of the opening.

[0023] Preferably, the wire-end plug-in includes a wire-end upper cover. The wire-end upper cover and the wire-end plastic housing are snap-connected to limit the movement of the high-voltage wire harness. A tail groove is provided at a position corresponding to the opening on the wire-end upper cover for wrapping and supporting the wire portion. The present invention also provides a battery pack, including:

[0024] A connector, which is the connector described in any one of the above;

[0025] A battery module, and each battery module is plugged with a set of the connectors. The connectors on two adjacent battery modules are connected by the lead-out cable;

[0026] A module cover, which is disposed on the top of the battery module and is attached to the edge of the connector. The module cover and the connector jointly shield the live components in the battery pack.

[0027] The connector provided by the present invention includes a board-end plug-in, a wire-end plug-in, an elastic member, and a second conductive row. The board-end plug-in is inserted on the battery module and has an installation groove. The wire-end plug-in has a first conductive row inserted in the installation groove. One end of the second conductive row is connected to the output pole of the battery module, and the other end is inserted in the installation groove. The elastic member is located in the installation groove. When the second conductive row and the first conductive row are inserted into the installation groove, the elastic member can provide a pressing force to reliably connect the second conductive row and the first conductive row for conduction. The above connector is inserted on the battery module to achieve reliable transmission of the current of the module output pole. When two battery modules are connected, the first conductive rows on the corresponding wire-end plug-ins are connected by the lead-out cable to achieve series or parallel connection of the battery modules. The connection method is simple and fast, the circuit connection is stable and reliable, and the efficiency and reliability of the connection of the battery modules are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of the connector provided by the present invention;

[0030] Figure 2Schematic diagram of the usage state of the connector provided by the present utility model;

[0031] Figure 3 Schematic diagram of the structure of the board - end plug - in provided by the present utility model;

[0032] Figure 4 Is Figure 3 Top view of;

[0033] Figure 5 Exploded view of the board - end plug - in provided by the present utility model;

[0034] Figure 6 Schematic diagram of the structure of the board - end upper cover provided by the present utility model;

[0035] Figure 7 Schematic diagram of the structure of the stainless - steel ring provided by the present utility model;

[0036] Figure 8 Is Figure 7 Top view of;

[0037] Figure 9 Another schematic diagram of the structure of the stainless - steel ring provided by the present utility model;

[0038] Figure 10 Yet another schematic diagram of the structure of the stainless - steel ring provided by the present utility model;

[0039] Figure 11 Schematic diagram of the structure of the board - end plastic shell provided by the present utility model;

[0040] Figure 12 Another schematic diagram of the structure of the board - end plastic shell provided by the present utility model;

[0041] Figure 13 Schematic diagram of the structure of the diversion row provided by the present utility model;

[0042] Figure 14 Another schematic diagram of the structure of the diversion row provided by the present utility model;

[0043] Figure 15 Schematic diagram of the structure of the wire - end plug - in provided by the present utility model;

[0044] Figure 16 Is Figure 15 Exploded view of;

[0045] Figure 17 Schematic diagram of the structure of the wire - end plastic shell provided by the present utility model;

[0046] Figure 18 Another schematic diagram of the structure of the wire - end plastic shell provided by the present utility model;

[0047] Figure 19 is Figure 17 a partially enlarged view of;

[0048] Figure 20 is a schematic structural view of the secondary locking structure provided by the present utility model;

[0049] Figure 21 is a schematic connection view of the secondary locking structure and the wire-end plastic housing provided by the present utility model;

[0050] Figure 22 is Figure 21 a partial cross-sectional view of;

[0051] Figure 23 is a schematic structural view of the high-voltage wire harness provided by the present utility model;

[0052] Figure 24 is another schematic structural view of the high-voltage wire harness provided by the present utility model;

[0053] Figure 25 is yet another schematic structural view of the high-voltage wire harness provided by the present utility model;

[0054] Figure 26 is a schematic structural view of the wire-end upper cover provided by the present utility model;

[0055] Figure 27 is a schematic connection view of the wire-end plastic housing, the high-voltage wire harness, and the wire-end upper cover provided by the present utility model;

[0056] Figure 28 is Figure 27 another orientation schematic view of;

[0057] Figure 29 is a schematic structural view of the battery module provided by the present utility model;

[0058] Figure 30 is a schematic connection view of the battery module and the board-end plug provided by the present utility model;

[0059] Figure 31 is a schematic view of the secondary locking structure inserted into the wire-end plastic housing provided by the present utility model;

[0060] Figure 32 is Figure 31 a partial cross-sectional view of;

[0061] Figure 33 is a schematic view of the pre-locked state of the secondary locking structure provided by the present utility model;

[0062] Figure 34 is Figure 33 a partially enlarged view of;

[0063] Figure 35 Schematic diagram of the final locking state of the secondary locking structure provided by the present utility model;

[0064] Figure 36 is Figure 35 a cross-sectional view of;

[0065] Figure 37 is Figure 36 a partially enlarged view of;

[0066] Figure 38 Schematic diagram of the structure of the module cover provided by the present utility model;

[0067] Figure 39 Schematic diagram of the connection between the connector and the battery module provided by the present utility model;

[0068] Figure 40 is Figure 39 an exploded view of;

[0069] Figure 41 Schematic diagram of the connection between the second conductive bar, the battery module, and the board-end plug provided by the present utility model;

[0070] Figure 42 is Figure 41 a partially enlarged view;

[0071] Figure 43 Schematic diagram of the connection between the second conductive bar, the battery module, the board-end plug, and the module cover provided by the present utility model.

[0072] Figures 1 - 43 In, the reference numerals include:

[0073] 1 - Board-end plug; 2 - Wire-end plug; 3 - Second conductive bar; 4 - Battery module; 5 - Module cover;

[0074] 11 - Board-end upper cover; 12 - Stainless steel ring; 13 - Board-end plastic shell; 21 - Wire-end plastic shell; 22 - Wire-end upper cover; 23 - Secondary locking structure; 24 - High-voltage wire harness; 31 - Module conductive bar; 32 - Board-end conductive bar; 41 - Cell part; 42 - Module side part; 51 - Main cavity; 52 - Lateral groove;

[0075] 111 - Notch; 112 - Clamping table; 121 - Installation groove; 122 - Elastic protrusion; 131 - Spring hook; 132 - Inner groove body; 133 - Baffle part; 134 - Limiting part; 135 - Positioning part; 136 - Clamping groove;

[0076] 211 - Plastic housing top surface; 212 - Cantilever part; 213 - Snap; 214 - First limiting cavity; 215 - Second limiting cavity; 216 - Limiting rib; 217 - Opening; 221 - Inner cavity body; 222 - Card slot; 223 - Tail slot; 231 - Head support surface; 232 - Locking body; 233 - Top cross beam; 234 - Bottom cross beam; 241 - First conductive row; 242 - Wire part; 243 - Insulating shell; 244 - First elastic contact part; 321 - Second elastic contact part; 412 - Output pole; 421 - Groove; 422 - Snap mounting groove; 423 - Step hole; 424 - Positioning groove;

[0077] 2121 - Vertical mounting groove; 2122 - Top cantilever beam; 2123 - Bottom cantilever beam; 2124 - Back side wall; 2411 - Contact conductive part; 2412 - Connection part. Detailed implementation mode

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0079] The core of the present invention is to provide a connector, which realizes the reliable transmission of the output pole current of the module through a quick insertion method, provides a pressing force through the setting of an elastic member to ensure a reliable circuit connection, the connection method is simple and fast, and the efficiency and reliability of the battery module connection are improved. Another core of the present invention is to provide a battery pack including the above connector.

[0080] The connector provided by the present invention is used to realize the reliable and rapid connection between battery modules 4, and mainly includes a board - end plug - in 1, a wire - end plug - in 2, an elastic member, and a second conductive row 3. Please refer to Figure 1 、 Figure 4 。

[0081] The board - end plug - in 1 is inserted on the battery module 4. The battery module 4 specifically includes a battery cell part 41 and a module side part 42. The board - end plug - in 1 is inserted on the module side part 42. Please refer to Figure 29 、 Figure 38 、 Figure 40 。

[0082] Taking a specific implementation mode as an example, a clamping groove is provided on either the module side part 42 of the battery module 4 or the board - end plug - in 1, and an elastic hook is provided on the other. The elastic hook can be snapped into the clamping groove to make the two firmly clamped.

[0083] Taking another specific embodiment as an example, a stepped hole is provided on either the module side portion 42 of the battery module 4 or the board end plug-in 1, and a hook is provided on the other. The hook can be non-elastic, and the hook is snapped onto the step of the stepped hole to firmly snap the two together.

[0084] Please refer to Figure 2 , an installation groove 121 is provided on the board end plug-in 1. The installation groove 121 provides an installation space for the electrical connection between the wire end plug-in 2 and the battery module 4. More specifically, the output pole 412 of the battery module 4 is connected to the second conductive row 3, and the wire end plug-in 2 is provided with a first conductive row 241. Both the first conductive row 241 and the second conductive row 3 are inserted into the installation groove 121 to achieve electrical connection.

[0085] In one specific embodiment, to ensure reliable electrical connection between the first conductive row 241 and the second conductive row 3, an elastic member is located in the installation groove 121 for pressing the first conductive row 241 and the second conductive row 3 together.

[0086] Specifically, the elastic member is located in the installation groove 121. The elastic member can be provided on the first conductive row 241 or in the installation groove 121 or on the second conductive row 3. The elastic member can be a spring, a convex structure, a spring piece, etc., and can provide a certain pressing force.

[0087] Taking one specific embodiment as an example, such as Figure 14 , an elastic member is provided on the second conductive row 3. The elastic member can be provided between the first conductive row 241 and the second conductive row 3 or between the second conductive row 3 and the side wall of the installation groove 121. When the first conductive row 241 is inserted into the installation groove 121, the second conductive row 3 is then inserted into the groove and is in close contact with the first conductive row 241. At this time, the elastic member is compressed to provide a pressing force, ensuring the reliable stability of the electrical connection and the reliable transmission of current. Figure 14 It should be further noted that a copper alloy sheet metal part is welded or riveted on the second conductive row 3, and the elastic member (the position indicated by 321 in the figure) is provided on the copper alloy sheet metal part. Please refer to Figure 23 , Figure 14 The aluminum alloy sheet metal part in Figure 23 can also be provided on the first conductive row 241 of

[0088] Taking another specific embodiment as an example, such as Figure 8, an elastic member is provided in the installation groove 121, specifically on the inner side wall of the installation groove 121. When the first conductive row 241 and the second conductive row 3 are inserted into the installation groove 121, the elastic member is compressed to provide a certain pressing force, ensuring the reliable and stable electrical connection and the reliable transmission of current.

[0089] It should be noted that in the above three specific embodiments, the elastic member is preferably integrally formed with the specific structure where it is arranged.

[0090] Furthermore, the first conductive row 241 of the wire-end plug-in 2 is also used to connect with the export cable. Here, the export cable is the connection between the first conductive rows 241 of two wire-end plug-ins 2 corresponding to the connection of two battery modules 4, which is used to realize the current conduction between the battery modules 4.

[0091] When two battery modules 4 are connected, each battery module 4 corresponds to a set of connectors, and each battery module 4 corresponds to a set of board-end plug-ins 1, wire-end plug-ins 2, and second conductive rows 3. In specific applications:

[0092] For example, when battery module A and battery module B are connected in series, the first conductive row 241 of the connector corresponding to the positive output pole of battery module A - export cable - the first conductive row 241 of the connector corresponding to the negative output pole of battery module B, the first conductive row 241 of the connector corresponding to the negative output pole of battery module A - export cable - the first conductive row 241 of the connector corresponding to the positive output pole of battery module B;

[0093] For example, when battery module A and battery module B are connected in parallel, the first conductive row 241 of the connector corresponding to the positive output pole of battery module A - export cable - the first conductive row 241 of the connector corresponding to the positive output pole of battery module B, the first conductive row 241 of the connector corresponding to the negative output pole 412 of battery module A - export cable - the first conductive row 241 of the connector corresponding to the negative output pole of battery module B.

[0094] In a specific embodiment, the connection between the output pole 412 of the battery module 4 and the second conductive row 3 can be welding or riveting, aiming to ensure a reliable electrical connection.

[0095] Please refer to Figures 38 - 39 、 Figure 1 , the second conductive row 3 specifically includes a module conductive row 31 and a board-end conductive row 32 electrically connected thereto. The board-end conductive row 32 is bent downward relative to the module conductive row 31 and connected to the elastic member in the installation groove 121, while the module conductive row 31 is electrically connected to the output pole 412 of the battery module 4.

[0096] Optionally, the module conductive row 31 and the board-end conductive row 32 are aluminum bars or copper bars.

[0097] The above connector includes a board - end plug 1, a wire - end plug 2, an elastic member, and a second conductive row 3. The board - end plug 1 is inserted on the battery module 4 and has an installation groove 121. The wire - end plug 2 has a first conductive row 241 inserted into the installation groove 121. One end of the second conductive row 3 is connected to the output pole 412 of the battery module, and the other end is inserted into the installation groove. An elastic member is provided on the first conductive row 241 or in the installation groove 121 or on the second conductive row. When the second conductive row 3 and the first conductive row 241 are inserted into the installation groove, the elastic member can provide a pressing force to reliably connect the second conductive row 3 and the first conductive row 241 for conduction. By being inserted on the battery module 4, reliable transfer of the current of the module output pole 412 is achieved. When two groups of battery modules 4 are connected, the first conductive rows on their corresponding wire - end plugs 2 can be connected through lead - out cables to achieve series or parallel connection of the battery modules. The connection method is simple and fast, the circuit connection is stable and reliable, and the efficiency and reliability of the battery module connection are improved.

[0098] Based on any of the above - mentioned embodiments, the elastic member is elastic protrusions 122 symmetrically arranged on both side walls of the installation groove 121, and the sum of the thicknesses of the first conductive row 241 and the second conductive row 3 is greater than the distance between the two elastic protrusions 122.

[0099] Please refer to Figures 2 - 4 、 Figure 8 , the elastic member is elastic protrusions 122 symmetrically arranged on both side walls of the installation groove 121. The number of elastic protrusions 122 can be 2, 4, or 6, and they can be symmetrically arranged in pairs on both side walls of the installation groove 121.

[0100] Preferably, the elastic protrusions 122 are stainless - steel protrusions integrally formed with the installation groove 121, which have good hardness. In the case of long - term use, they are not prone to stress relaxation and still have good pressing effects. The structure is simple and effective, reducing material costs and process costs.

[0101] Please refer to Figure 2 , the sum of the thicknesses T2 of the first conductive row 241 and the second conductive row 3 is greater than the distance T1 between the two elastic protrusions 122. After they are inserted into the installation groove 121, the elastic protrusions 122 will be pressed, causing the elastic protrusions 122 to undergo elastic deformation to provide a normal pressure to the first conductive row 241 and the second conductive row 3, so as to achieve a stable and reliable connection between the two and avoid contact problems caused by detachment.

[0102] In this embodiment, the part of the first conductive row 241 and the second conductive row 3 in contact with each other is in a parallel state, which is convenient for close fitting to achieve the effect of electrical conduction.

[0103] As Figure 8 shown, the elastic protrusions 122 are protrusion structures. As Figure 9And 10 As shown in 10 , the elastic protrusion 122 can also be a shrapnel structure, which can be flexibly selected.

[0104] Based on any of the above embodiments, the board-end plug-in 1 includes a board-end plastic shell 13 for inserting into the battery module 4. A stainless-steel ring 12 is sleeved inside the board-end plastic shell 13. The inner side wall of the stainless-steel ring 12 encloses an installation groove 121, and there is a gap between the outer side wall of the stainless-steel ring 12 and the inner side wall of the board-end plastic shell 13.

[0105] Please refer to Figures 2 - 4 、 Figure 29 , the board-end plug-in 1 includes a board-end plastic shell 13 for inserting on the module side 42 of the battery module 4.

[0106] Please refer to Figure 11 、 Figure 7 , a stainless-steel ring 12 is sleeved inside the board-end plastic shell 13. The inner groove body 132 of the board-end plastic shell 13 provides an installation space for the stainless-steel ring 12. Here, the stainless-steel ring 12 is a component with an installation groove 121 and an elastic protrusion 122. The inner side wall of the stainless-steel ring 12 encloses the installation groove 121, and the elastic protrusion 122 is provided on the inner side wall. The stainless-steel ring 12 is preferably integrally formed to ensure a better service life and use effect, avoid stress relaxation, and ensure the long-term stable and reliable electrical connection between the second conductive row 3 and the first conductive row 241.

[0107] There is a gap between the outer side wall of the stainless-steel ring 12 and the inner side wall of the board-end plastic shell 13. Please refer to Figure 4 , when the second conductive row 3 and the first conductive row 241 are inserted into the installation groove 121, no force will be generated between the board-end plastic shell 13 and the stainless-steel ring 12, avoiding affecting the circuit connection.

[0108] Based on any of the above embodiments, a board-end upper cover 11 is connected to the top of the board-end plastic shell 13. The board-end upper cover 11 presses on the top of the stainless-steel ring 12 and its notch 111 is larger than the opening of the installation groove 121.

[0109] Please refer to Figure 3 、 Figure 6 、 Figures 11 - 12 , the board-end upper cover 11 is connected to the top of the board-end plastic shell 13. Specifically, either the board-end upper cover 11 or the board-end plastic shell 13 is provided with a clamping platform 112, and the other is provided with a clamping groove 136 to realize the reliable connection between the board-end upper cover 11 and the board-end plastic shell 13.

[0110] After the stainless-steel ring 12 is installed into the board-end plastic shell 13, then connect the board-end upper cover 11 and the board-end plastic shell 13, so that the board-end upper cover 11 presses on the top of the stainless-steel ring 12 to ensure the stability of the stainless-steel ring 12 and prevent it from shifting.

[0111] Please refer to Figure 2 、 Figure 6 、 Figure 8 , the top notch 111 of the board-end upper cover 11 is larger than the opening of the installation groove 121, so that when the board-end upper cover 11 is pressed on the stainless steel ring 12, the installation groove 121 will not be blocked.

[0112] Based on any of the above embodiments, the board-end plastic shell 13 is further provided with a limiting part 134 and a positioning part 135 for clamping with the battery module 4, and the bottom of the positioning part 135 is lower than the bottom of the limiting part 134.

[0113] Please refer to Figure 5 、 Figure 12 、 Figure 30 , the board-end plastic shell 13 is provided with a baffle part 133, and a movable limiting part 134 is arranged in the baffle part 133. The bottom of the positioning part 135 is lower than the bottom of the limiting part 134. The positioning part 135 is used to connect with the module side part 42 prior to the limiting part 134 to achieve the effect of pre-positioning. After positioning, the limiting part 134 is inserted into the stepped hole arranged on the module side part 42 to achieve the accurate, rapid and reliable connection between the board-end plastic shell 13 and the module side part 42.

[0114] In this embodiment, the movement of the limiting part 134 is specifically within the U-shaped groove of the baffle part 133. The limiting part 134 is an elastic hook and can move within the U-shaped groove to connect with the module side part 42. The baffle part 133 is used for limiting to prevent the elastic hook from excessive deformation and root material yield. At the same time, it can protect the elastic hook during packaging, transportation, installation and other links to prevent it from being damaged by accidental collision.

[0115] Based on any of the above embodiments, the wire-end plug-in 2 includes a wire-end plastic shell 21 covering the board-end plastic shell 13. A cantilever part 212 for clamping with the board-end plastic shell 13 is arranged on the side of the wire-end plastic shell 21. A secondary locking structure 23 is inserted into the cantilever part 212. The secondary locking structure 23 is inserted into or removed from the cantilever part 212 and drives the cantilever part 212 to move, so as to lock or unlock the wire-end plastic shell 21 and the board-end plastic shell 13.

[0116] Please refer to Figure 1 、 Figures 17 - 22 , the inner cavity of the wire-end plastic shell 21 wraps the board-end plastic shell 13. A cantilever part 212 is arranged on the side of the wire-end plastic shell 21, and a secondary locking structure 23 is arranged in cooperation with the cantilever part 212. When the secondary locking structure 23 is inserted into the cantilever part 212, the wire-end plastic shell 21 and the board-end plastic shell 13 are locked. When the secondary locking structure 23 is removed from the cantilever part 212, it drives the cantilever part 212 to move, so that the cantilever part 212 releases the lock on the board-end plastic shell 13, and the wire-end plastic shell 21 and the board-end plastic shell 13 are unlocked.

[0117] Taking a specific embodiment as an example, the wire-end plastic housing 21 and the board-end plastic housing 13 are snap-connected. Specifically, the board-end plastic housing 13 is snap-connected to the cantilever portion 212 of the wire-end plastic housing 21, and the secondary locking structure 23 is inserted into the cantilever portion 212 and presses against the board-end plastic housing 13 to ensure the effective reliability of the snap connection, so as to ensure the reliable connection between the board-end plug-in 1 and the wire-end plug-in 2. When the secondary locking structure 23 moves away from the cantilever portion 212, it can drive the cantilever portion 212 to move, so that the cantilever portion 212 and the secondary locking structure 23 release the restriction on the board-end plastic housing 13. At this time, the board-end plug-in 1 and the wire-end plug-in 2 can be unlocked, and the board-end plug-in 1 can be separated from the wire-end plug-in 2.

[0118] Based on any of the above embodiments, the cantilever portion 212 includes a vertical installation groove 2121. At the top and bottom of the vertical installation groove 2121, a top cantilever 2122 and a bottom cantilever 2123 are respectively provided. After the spring hook 131 of the board-end plastic housing 13 is inserted into the cantilever portion 212, it is snap-connected to the bottom cantilever 2123.

[0119] The secondary locking structure 23 includes a locking body 232. The bottom of the locking body 232 extends outward to form a bottom cross beam 234, and a top cross beam 233 is provided on the top of the locking body 232 opposite to the bottom cross beam 234.

[0120] The secondary locking structure 23 can move downward along the vertical direction of the vertical installation groove 2121, so that the top cross beam 233 is limited to the lower side of the top cantilever 2122, and the bottom cross beam 234 abuts against the upper end face or the lower end face of the bottom cantilever 2123 to limit the movement of the spring hook 131.

[0121] Or, the secondary locking structure 23 can move upward along the vertical direction of the vertical installation groove 2121, so that the bottom cross beam 234 moves away from the bottom cantilever 2123, and under the limiting action of the top cross beam 233 and the top cantilever 2122, it drives the cantilever portion 212 to move to release the restriction on the spring hook 131.

[0122] Please refer to Figure 3 、 Figure 21 、 Figure 37 When the board-end plastic housing 13 and the wire-end plastic housing 21 are connected, specifically, the spring hook 131 of the board-end plastic housing 13 is inserted into the cantilever portion 212 and abuts against the bottom cantilever 2123. Specifically, a through hole for the spring hook 131 to pass through is provided on the back side wall 2124 of the cantilever portion 212 corresponding to the side of the wire-end plastic housing 21. The spring hook 131 passes through the through hole and abuts against the bottom cantilever 2123. Please refer to Figure 37 .

[0123] Please refer to Figure 19, the cantilever portion 212 specifically includes a vertical installation groove 2121, a top crossbeam 2122, and a bottom crossbeam 2123. Both the top crossbeam 2122 and the bottom crossbeam 2123 are horizontally arranged, and the bottom crossbeam 2123 corresponds to the bottom of the through hole on the back sidewall 2124. The back sidewall 2124 of the cantilever portion 212 is connected to the top plastic shell top surface 211 to form a support. When stressed, the entire cantilever portion 212 can open to the left relative to the support point.

[0124] Please refer to Figure 20 , the secondary locking structure 23 includes a locking body 232, a bottom crossbeam 234, and a top crossbeam 233. The bottom crossbeam 234 extends outward relative to the locking body 232, while the top crossbeam 233 is a component arranged inward relative to the locking body 232. The locking body 232, the top crossbeam 233, and the bottom crossbeam 234 are all movable.

[0125] Next, the process of the secondary locking structure 23 locking both the plate end plastic shell 13 and the wire end plastic shell 21 will be introduced in detail:

[0126] Please refer to Figures 32 - 33 , the secondary locking structure 23 is installed into the vertical installation groove 2121 of the wire end plastic shell 21 and the top crossbeam 233 is limited to the lower side of the top crossbeam 2122. The wire end plastic shell 21 moves downward to deform the spring hook 131 and insert it onto the cantilever portion 212 until it reaches Figure 34 the state where the spring hook 131 in Figure 34 is clamped on the bottom crossbeam 2123. The clamping here refers to Figures 33 - 34 , Figures 35 - 37 the state where the right-angled groove of the spring hook 131 in

[0127] Next, the process of unlocking both the plastic housing 13 at the board end and the plastic housing 21 at the wire end of the secondary locking structure 23 will be introduced in detail:

[0128] From Figures 35 - 37 In the final locked state, pull up the head support surface 231 of the secondary locking structure 23 so that the head support surface 231 is higher than the top surface 211 of the plastic housing, and the bottom crossbeam 234 moves from the state of hooking the lower end surface of the bottom suspension beam 2123 to the state of abutting against the upper end surface of the bottom suspension beam 2123, as shown in Figure 34 Shown, this state is the pre-locked state; in the pre-locked state, regarding the left and right orientations of Figure 34 , push the head support surface 231 backward, so that the secondary locking structure 23 drives the cantilever part 212 to move leftward as a whole. Specifically, move the back side wall 2124 of the cantilever part 212 leftward to open, releasing the locking of the spring hook 131, as shown in Figure 32 Shown. At this time, the plastic housing 13 at the board end can be taken out from the plastic housing 21 at the wire end to complete the unlocking process.

[0129] Please refer to Figure 32 , Figure 34 , Figure 37 . An inclined surface structure matching the bottom crossbeam 234 is provided on the lower end surface of the bottom suspension beam 2123 to facilitate the bottom crossbeam 234 to hook or disengage from the lower end surface of the bottom suspension beam 2123.

[0130] In this embodiment, by using the secondary locking structure 23, whether the board end plug-in 1 and the wire end plug-in 2 are properly mated can be judged by whether the head support surface 231 is flush with the top surface 211 of the plastic housing 21 of the wire end plastic housing, ensuring the reliability of the circuit connection; in addition, the secondary locking structure 23 is divided into two states: pre-locked and final locked, avoiding the risk of misoperation.

[0131] Based on any of the above embodiments, the wire end plug-in 2 includes a wire end upper cover 22. The wire end upper cover 22 and the wire end plastic housing 21 are snap-connected to limit the movement of the high-voltage wire harness 24. A tail groove 223 is provided at the position corresponding to the opening 217 on the wire end upper cover 22 for wrapping and supporting the wire part 242.

[0132] Please refer to Figure 1 , Figure 16 , Figure 18 , Figure 23 , Figures 26 - 28, the wire-end plug-in 2 includes an L-shaped wire-end upper cover 22, and the wire-end upper cover 22 is snap-connected to the wire-end plastic housing 21. Specifically, either the wire-end upper cover 22 or the wire-end plastic housing 21 is provided with a buckle 213, and the other is provided with a slot 222. The reliable connection between the wire-end upper cover 22 and the wire-end plastic housing 21 is achieved through the cooperation of the buckle 213 and the slot 222. The high-voltage wire harness 24 is arranged in the first limiting cavity 214 and the second limiting cavity 215, and is covered on the wire-end plastic housing 21 through the inner cavity 221 of the wire-end upper cover 22, so that the high-voltage wire harness 24 is completely fixed in the wire-end plastic housing 21 without moving, ensuring the reliable stability of the connection.

[0133] A tail groove 223 is provided at a position corresponding to the opening 217 on the wire-end upper cover 22 for wrapping and supporting the wire part 242. An insulating shell 243 is also sleeved outside the wire part 242. The head of the insulating shell 243 of the high-voltage wire harness 24 is wrapped by the opening 217 of the wire-end plastic housing 21 and the tail groove 223 of the wire-end upper cover 22, which can prevent the conductive wire part 242 from leaking out, play a role of insulation protection, and avoid the occurrence of accidental electric shock.

[0134] Please refer to Figure 1 、 Figure 16 、 Figure 23 , the first conductive row 241 includes a connecting part 2412 and a contact conductive part 2411 integrally formed therewith. Either the contact conductive part 2411 or any one of the second conductive rows 3 can be provided with a protrusion or a spring piece or a reinforcing rib, or neither of them is provided with a protrusion or a spring piece or a reinforcing rib, or both of them are provided with a protrusion or a spring piece or a reinforcing rib.

[0135] Such as Figure 1 、 Figure 13 And Figure 14 , a second elastic contact part 321 is provided on the second conductive row 3. Here, the second elastic contact part 321 is any one of a protrusion (point contact) or a spring piece (surface contact) or a reinforcing rib (line contact). Such as Figure 23 、 24 , a first elastic contact part 244 is provided on the contact conductive part 2411. The reliable electrical connection between the second conductive row 3 and the first conductive row 241 is ensured through the contact between the second elastic contact part 321 and the first elastic contact part 244. This situation is applicable when the flatness of the contact conductive part 2411 is general. The reliable electrical connection can be ensured by controlling the coplanarity of the two elastic contact parts.

[0136] Such as Figure 25 As shown, when the flatness of the contact conductive part 2411 is good, no elastic contact part is provided on the first elastic contact part 244.

[0137] The contact conductive part 2411 is formed by bending upward and then downward relative to the connecting part 2412, and the connecting part 2412 and the wire part 242 are connected by ultrasonic welding or resistance welding to achieve electrical connection between the wire and the first conductive row 241.

[0138] Optionally, the wire part 242 can also be replaced by a flexible copper strip or a rigid copper strip, and can also be connected to the contact conductive part 2411 by welding.

[0139] When the high-voltage wire harness 24 is inserted into the wire-end plastic housing 21, both ends of the connecting part 2412 are clamped by the two vertical inner side walls of the first limiting cavity 214, and the contact conductive part 2411 is resisted by the limiting rib 216 on the bottom wall surface of the first limiting cavity 214, so that the whole high-voltage wire harness 24 can move upward, and the movement in other directions is restricted by the wire-end plastic housing 21. Further cooperating with the setting of the wire-end upper cover 22, the high-voltage wire harness 24 is completely restricted within the wire-end plastic housing 21, ensuring the stability and reliability of the operation.

[0140] In addition to the above connector, the present utility model also provides a battery pack including the connector disclosed in the above embodiment, and the battery pack includes:

[0141] A connector, which is the connector of any one of the above;

[0142] A battery module 4, each battery module 4 is plugged with a group of connectors, and the connectors on two adjacent battery modules 4 are connected by a lead-out cable;

[0143] A module cover 5, which is disposed on the top of the battery module 4 and adjacent to the edge of the connector, and the module cover 5 and the connector jointly shield the charged components in the battery pack.

[0144] Please refer to Figures 35 - 40 , each battery module 4 is plugged with a group of connectors, and the first conductive rows 241 of the connectors on two adjacent battery modules 4 are connected by a lead-out cable to achieve electrical connection between the two battery modules.

[0145] When the battery module 4 is plugged with a group of connectors, the board-end plug-in 1 is pre-installed on the battery module 4, then the second conductive row 3 is welded to the battery module 4, and then the module cover 5 is assembled to the battery module 4 to achieve the connection at the battery module 4 end.

[0146] A groove 421 for installing the board-end plug-in 1 is provided on the module side part 42 of the battery module 4, and the groove 421 is in close fit with the outer periphery of the board-end plastic housing 13 of the board-end plug-in 1.

[0147] There are two sets of buckle mounting grooves 422 provided on the groove 421. A positioning groove 424 is provided between the two sets of buckle mounting grooves 422. The stepped hole 423 is provided at the bottom of one side wall of the buckle mounting groove 422. The stepped hole 423 communicates with the buckle mounting groove 422, and the stepped hole 423 is perpendicular to the buckle mounting groove 422.

[0148] When the board-end plastic shell 13 is connected to the side part 42 of the module, the positioning part 135 first contacts the positioning groove 424 for positioning. Then, the limiting part 134 on the board-end plastic shell 13 is inserted into the buckle mounting groove 422 and finally clamped in the stepped hole 423 to achieve a reliable connection between the board-end plastic shell 13 and the side part 42 of the module, and achieve a reliable fixation of the board-end plug-in 1 on the battery module 4.

[0149] The module cover 5 is covered on the top of the battery module 4. The module cover 5 includes a main cavity 51 and a lateral groove 52. Among them, the main cavity 51 can completely shield the battery cell part 41 to achieve the effects of dust prevention and insulation protection, avoiding the situation of accidental electric shock. The lateral groove 52 can make room for the first conductive row 241 electrically connected to the output pole 412, so that it can be connected to the mounting groove 121, ensuring that there is no interference during the installation process.

[0150] On the basis of making room for the first conductive row 241 to pass through, the edge of the connector is arranged in contact with the module cover 5. The connector itself has a cover body, such as the wire-end plastic shell 21, the board-end plastic shell 13, etc., which can effectively protect the charged components (such as cables, conductive rows, etc.) inside the connector. That is, the connector and the module cover 5 can cooperate to shield the charged components in the entire battery pack.

[0151] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0152] The above has introduced in detail a connector and a battery pack provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A connector, characterized in that, Comprising: A board-end plug-in (1) for being inserted on a battery module (4) and having an installation groove (121); A wire-end plug-in (2) having a first conductive row (241) inserted into the installation groove (121), and the first conductive row (241) is used for electrically connecting the export cables between two battery modules (4); A second conductive row (3), one end of the second conductive row (3) is used for connecting the output pole (412) of the battery module (4), and the other end of the second conductive row (3) is inserted into the installation groove (121); An elastic member located in the installation groove (121) for pressing the second conductive row (3) and the first conductive row (241) to achieve electrical connection.

2. The connector according to claim 1, characterized in that, The elastic member is elastic protrusions (122) symmetrically arranged on both side walls of the installation groove (121), and the sum of the thicknesses of the first conductive row (241) and the second conductive row (3) is greater than the distance between the two elastic protrusions (122).

3. The connector according to claim 2, wherein The board-end plug-in (1) includes a board-end plastic shell (13) for being inserted on the battery module (4), a stainless-steel ring (12) is sleeved inside the board-end plastic shell (13), the inner side wall of the stainless-steel ring (12) encloses the installation groove (121), and there is a gap between the outer side wall of the stainless-steel ring (12) and the inner side wall of the board-end plastic shell (13).

4. The connector according to claim 3, characterized in that, A board-end upper cover (11) is connected to the top of the board-end plastic shell (13), the board-end upper cover (11) presses on the top of the stainless-steel ring (12) and its notch (111) is larger than the opening of the installation groove (121).

5. The connector according to claim 4, wherein The board-end plastic shell (13) is also provided with a limiting portion (134) and a positioning portion (135) for clamping with the battery module (4), and the bottom of the positioning portion (135) is lower than the bottom of the limiting portion (134).

6. The connector according to any one of claims 3-5, characterized in that, The wire-end plug-in (2) includes a wire-end plastic shell (21) covering the board-end plastic shell (13), a cantilever portion (212) for clamping with the board-end plastic shell (13) is arranged on the side of the wire-end plastic shell (21), a secondary locking structure (23) is inserted into the cantilever portion (212), and the secondary locking structure (23) is inserted into or removed from the cantilever portion (212) and drives the cantilever portion (212) to move, so as to realize the locking or unlocking of the wire-end plastic shell (21) and the board-end plastic shell (13).

7. The connector according to claim 6, wherein The cantilever portion (212) includes a vertical installation groove (2121), a top beam (2122) and a bottom beam (2123) are correspondingly arranged at the top and bottom of the vertical installation groove (2121), and the spring hook (131) of the board-end plastic shell (13) is inserted into the cantilever portion (212) and clamped on the bottom beam (2123); The secondary locking structure (23) includes a locking body (232), the bottom of the locking body (232) extends outwards to form a bottom cross beam (234), and a top cross beam (233) is arranged on the top of the locking body (232) opposite to the bottom cross beam (234); The secondary locking structure (23) can move downward along the vertical direction of the vertical installation groove (2121), so that the top cross beam (233) is limited to the lower side of the top cantilever beam (2122), and the bottom cross beam (234) abuts against the upper end surface or the lower end surface of the bottom cantilever beam (2123) to limit the movement of the spring hook (131); Or, the secondary locking structure (23) can move upward along the vertical direction of the vertical installation groove (2121), so that the bottom cross beam (234) moves away from the bottom cantilever beam (2123), and drives the cantilever part (212) to move under the limiting action of the top cross beam (233) and the top cantilever beam (2122) to release the restriction on the spring hook (131).

8. The connector according to claim 7, characterized in that, The wire end plug-in (2) includes a high-voltage wire harness (24) arranged inside the wire end plastic shell (21), and the wire end plastic shell (21) is provided with a first limiting cavity (214) and a second limiting cavity (215) communicated with it; The high-voltage wire harness (24) includes the first conductive row (241) arranged in the first limiting cavity (214), the first conductive row (241) is connected with a wire part (242) for connecting the lead-out cable, and the wire part (242) is arranged in the second limiting cavity (215) and extends out of the opening (217).

9. The connector according to claim 8, wherein, The wire end plug-in (2) includes a wire end upper cover (22), the wire end upper cover (22) and the wire end plastic shell (21) are snap-connected to limit the movement of the high-voltage wire harness (24), and a tail groove (223) is arranged at a position corresponding to the opening (217) on the wire end upper cover (22) for wrapping and supporting the wire part (242).

10. A battery pack, characterized in that, Comprising: A connector, which is the connector according to any one of claims 1 to 9; A battery module (4), each battery module (4) is plugged with a group of the connectors, and the connectors on two adjacent battery modules (4) are connected by the lead-out cable; A module cover (5) is arranged on the top of the battery module (4) and is attached to the edge of the connector, and the module cover (5) and the connector jointly shield the live components in the battery pack.

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