Resistance-adjustable cover plate and battery

Abstract

The invention relates to the technical field of batteries, in particular to a resistance-adjustable cover plate and a battery, the cover plate comprises a cover plate main body, a positive pole column, an electric connecting piece, a resistance piece, a plurality of adjusting members, an insulating support piece, a conductive member and an insulating seat, the positive pole column and the insulating seat are mounted on the cover plate main body; the resistance piece is arranged on the insulating seat and is electrically connected with the positive pole column through the electric connecting piece; the insulating supporting piece is mounted on the insulating seat or the cover plate main body; the adjusting component is movably mounted on the resistance piece and the insulating supporting piece, and is electrically connected with the cover plate main body through the conductive component; the multiple adjusting components are sequentially arranged in the first preset direction. By moving the adjusting component, the adjusting component is matched with or separated from the resistor, and the resistance value of the resistor connected to the circuit is changed. Therefore, the structure with the adjustable resistance value is connected between the positive pole and the cover plate main body, so that the shell voltage of the battery in the whole service cycle is ensured to be in a normal state, and the problems of aluminum shell corrosion liquid leakage, short circuit and the like are avoided.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a resistance-adjustable cover plate and a battery. Background Art

[0002] At present, lithium batteries are increasingly used in large-scale energy storage fields. It is well known that the long cycle of energy storage batteries is one of the key indicators, but during the long-term storage of batteries, it is found that some of the outer surfaces of the shells are corroded and leaking. In order to solve the above problems, many researchers in the industry have proposed different solutions to the above problems. The more common one is to use plastic with certain conductive properties at the positive electrode and set a certain ohmic resistance to increase the potential of the shell to prevent electrochemical corrosion of the shell. It can be seen that plastic ohmic resistance is mainly used to solve the problem of shell corrosion, but plastic will be modified at high temperatures, causing the ohmic resistance to fluctuate greatly, thereby losing its due function, and it is impossible to adjust the ohmic resistance according to the actual situation to achieve the best anti-corrosion effect. Therefore, it is urgent to develop a battery structure that can ensure that the battery has a corresponding stable resistance value in different harsh environments. Summary of the invention

[0003] The purpose of the present application is to provide a cover plate and a battery with adjustable resistance, which to a certain extent solves the technical problem in the prior art that there is an urgent need to develop a battery structure that can ensure that the battery has a corresponding stable resistance in different harsh environments.

[0004] The present application provides a resistance-adjustable cover plate, comprising: a cover plate body, a positive electrode column, an electrical connector, a resistor, an adjusting member, an insulating support member, a conductive member, and an insulating seat; wherein the positive electrode column and the insulating seat are both mounted on the cover plate body; the resistor is mounted on the insulating seat and is insulated from the cover plate body by the insulating seat, and the resistor is electrically connected to the positive electrode column by the electrical connector; the insulating support member is mounted on the insulating seat or the cover plate body;

[0005] The adjusting component is movably mounted on the resistor and the insulating support, and there are multiple adjusting components; the multiple adjusting components are electrically connected to the cover plate body through the conductive component, and by moving the adjusting component, the adjusting component can be matched with or separated from different positions of the resistor to change the resistance value of the resistor connected to the circuit.

[0006] In the above technical solution, further, the resistor is formed with a plug hole, the insulating support is formed with an avoidance through hole, and the adjustment component is movably inserted into the avoidance through hole and the plug hole in turn, and can move along the plug hole and the avoidance through hole.

[0007] In any of the above technical solutions, further, the adjustable resistance cover also includes a mounting tube, a pressing member, a transmission member and a spring; wherein the mounting tube is mounted on the insulating support, and the inner wall of the mounting tube is formed with a plurality of long grooves and short grooves extending along its length direction, and the long grooves and the short grooves are arranged alternately and sequentially around the axis of the mounting tube; the long grooves and the short grooves are both formed with openings on one side close to the resistor; the pressing member is formed with an avoidance groove extending along its length direction and located on the side of the short groove close to the insulating support, and the avoidance groove is connected to the short groove; the pressing member is formed with tooth grooves arranged sequentially along its circumference at one end close to the transmission member; a guide protrusion is formed along the length direction of the pressing member and on the outer wall area of ​​the pressing member close to two of the tooth grooves, and the guide protrusion can slide into or out of the long groove or the short groove;

[0008] Part of the structure of the transmission member is inserted into the pressing tube, and the outer wall of the transmission member is formed with a plurality of matching teeth arranged in sequence and at intervals along its circumference; along the length direction of the adjusting member, the adjusting member and the transmission member are connected in sequence; the spring is arranged in the insertion hole, and along the length direction of the adjusting member, one end of the spring is connected to the inner wall of the insertion hole; the outer wall of the adjusting member is provided with a limiting protrusion, and the limiting protrusion can abut against the side wall of the insertion hole and compress the spring;

[0009] When the pressing member is pressed toward the direction of the resistor, the mating tooth can slide from the long groove into the tooth groove, and when the pressing tube is released, the mating tooth can slide from the tooth groove into the short groove, and in this process the spring is compressed by the limiting protrusion; when the pressing member is pressed again, the mating tooth slides from the short groove into the tooth groove, and when the pressing tube is released, the spring is in a rebound state and pushes the limiting protrusion to reset the adjusting member, and the mating tooth can slide from the tooth groove into the long groove.

[0010] In any of the above technical solutions, further, the short groove is a V-shaped groove, and one side wall of the short groove is arranged along the length direction of the adjusting member, and the other side wall of the short groove is inclined relative to the length direction of the adjusting member to form a first guiding inclined surface;

[0011] A second guide slope is formed at the end of the structure between the long slot and the short slot, and the first guide slope and the second guide slope are arranged in parallel; a third guide slope is formed along one end of the mating tooth, and the third guide slope is adapted to the first guide slope and the second guide slope at the same time.

[0012] In any of the above technical solutions, further, the insulating support is formed with a first installation cavity penetrating therethrough close to one end of the cover plate body, and the conductive component is installed in the first installation cavity.

[0013] In any of the above technical solutions, further, when the insulating support member is installed on the insulating seat, the insulating seat forms a second installation cavity running through the top and bottom thereof, the insulating support member is installed in the second installation cavity, and the conductive component is in contact with the cover plate body through the first installation cavity and the second installation cavity.

[0014] In any of the above technical solutions, further, the adjustable resistance cover also includes a fixing component, which is embedded in the insulating seat and insulated from the cover body; the fixing component is formed with a groove, the resistor is fixedly installed in the groove, and a part of the structure of the resistor extends to the outside of the fixing component and the insulating seat, and slidably cooperates with the adjusting component.

[0015] In any of the above technical solutions, further, the resistor is detachably connected to the fixing member by thread.

[0016] In any of the above technical solutions, further, the resistor and the fixing component are connected by welding or gluing.

[0017] In any of the above technical solutions, further, a plurality of the adjusting components are arranged sequentially along a first preset direction.

[0018] In any of the above technical solutions, further, the resistor includes a body and a plurality of protrusions, and the plurality of protrusions are sequentially arranged on the outer wall of the body along the first preset direction so that the resistance value is distributed in a leaping manner along the first preset direction.

[0019] In any of the above technical solutions, further, the material of any of the protruding portions is different and is different from the material of the main body.

[0020] In any of the above technical solutions, further, the resistor element includes a plurality of resistor parts connected in sequence, so that the resistance value is distributed in a leapfrog manner along the first preset direction.

[0021] In any of the above technical solutions, further, the materials of any of the resistor parts are different.

[0022] In any of the above technical solutions, further, the first preset direction, the height direction of the resistor and the thickness direction of the cover plate body are the same.

[0023] In any of the above technical solutions, further, the adjustable resistance cover plate also includes an insulating component and a welding ring; wherein, the welding ring is arranged on the side of the cover plate away from the pole core, and the welding ring is pressed on the outside of the positive electrode column, and the insulating component wraps a part of the welding ring so that the welding ring and the cover plate are insulated; the insulating component and the welding ring are both formed with an avoidance through hole, and the adjustment component is electrically connected to the positive electrode column through the avoidance through hole.

[0024] In any of the above technical solutions, further, the adjusting member is a rod, and a gripping portion is formed at one end of the adjusting member exposed from the insulating support member.

[0025] In any of the above technical solutions, further, the positive electrode column is formed with a first mounting groove, and one end of the electrical connector is installed in the first mounting groove.

[0026] In any of the above technical solutions, further, the cover plate body is formed with a second mounting groove, and the insulating seat is installed in the second mounting groove.

[0027] In any of the above technical solutions, further, the electrical connector is connected to the positive electrode column and the resistor respectively by welding.

[0028] In any of the above technical solutions, further, the conductive component is a flexible connecting wire or a metal spring, and when the conductive component is a flexible connecting wire, the conductive component is connected to the adjusting component by welding.

[0029] In any of the above technical solutions, further, an assembly groove is formed on the outer side wall of the pole.

[0030] In any of the above technical solutions, further, the regulating member is located on the outer side of the cover plate body away from the pole core.

[0031] In any of the above technical solutions, further, at least a portion of the structure of the resistor is located on the outer side of the cover plate body away from the pole core.

[0032] In any of the above technical solutions, further, at least a portion of the structure of the insulating support member is located on the outer side of the cover plate body away from the pole core.

[0033] The present application also provides a battery, comprising a housing, a pole core, and a resistance-adjustable cover plate as described in any of the above technical solutions, wherein the pole core is arranged in the housing, the resistance-adjustable cover plate is sealed at the opening end of the housing, and the cover plate body of the resistance-adjustable cover plate is connected to the housing. Therefore, all the beneficial technical effects of the resistance-adjustable cover plate are achieved, and no further description is given here.

[0034] Compared with the prior art, the beneficial effects of this application are:

[0035] The present application provides a resistance-adjustable cover plate, which connects an adjustable resistance structure between the positive electrode column and the cover plate body to ensure that the shell voltage of the battery remains normal throughout the entire service life, thereby avoiding the occurrence of safety problems such as corrosion, leakage and short circuit of the shell, such as aluminum shell, effectively extending the service life of the battery, ensuring the battery performance, and improving the customer's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 An exploded view of a battery provided in an embodiment of the present application;

[0038] Figure 2 An exploded view of the adjustable resistance cover provided in an embodiment of the present application;

[0039] Figure 3 An exploded diagram of the resistance adjustable structure provided in an embodiment of the present application;

[0040] Figure 4 An assembly diagram of the adjustable resistance cover provided in an embodiment of the present application;

[0041] Figure 5 Another assembly diagram of the adjustable resistance cover provided in the embodiment of the present application;

[0042] Figure 6 for Figure 5 A schematic diagram of a local enlarged structure;

[0043] Figure 7 for Figure 6 A schematic diagram of the enlarged structure at A;

[0044] Figure 8 A partial assembly diagram of the adjustable resistance cover provided in an embodiment of the present application;

[0045] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure at B;

[0046] Fig.10 A schematic diagram of the structure of a resistor provided in an embodiment of the present application;

[0047] Fig.11 A schematic diagram of the structure of the positive electrode column provided in an embodiment of the present application;

[0048] Fig.12 An exploded view of the insulating seat and the fixing member provided in the embodiment of the present application;

[0049] Fig.13 A schematic diagram of the structure of the regulating component provided in the embodiment of the present application;

[0050] Fig.14 An assembly diagram of the installation pipe, the pressing member and the transmission member provided in the embodiment of the present application;

[0051] Fig.15 Another assembly diagram of the installation pipe, the pressing member and the transmission member provided in the embodiment of the present application;

[0052] Fig.16 for Fig.15 Cross-sectional view along section CC;

[0053] Fig.17 A schematic diagram of the structure of a pressing member provided in an embodiment of the present application;

[0054] Fig.18 A schematic diagram of the structure of a transmission component provided in an embodiment of the present application;

[0055] Fig.19 A partial assembly diagram of the adjustment component and the resistor provided in an embodiment of the present application.

[0056] Reference numerals:

[0057] 1-cover body, 101-second mounting groove, 2-positive pole, 21-first mounting groove, 3-electrical connector, 4-resistance member, 41-body, 42-protrusion, 43-jack, 5-adjusting member, 51-limiting protrusion, 6-holding portion, 7-insulating support member, 71-first mounting cavity, 72-avoidance through hole, 8-conductive member, 9-insulating seat, 91-second mounting cavity, 10-fixing member, 11-insulating member, 12-welding ring, 13-lower plastic, 14-shell, 15-pole core, 16-mounting pipe, 161-long groove, 162-short groove, 163-avoidance groove, 17-pressing member, 171-tooth groove, 172-guide protrusion, 18-transmission member, 181-matching tooth, 19-spring, 20-first guide slope, 201-second guide slope, 202-third guide slope. DETAILED DESCRIPTION

[0058] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0059] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0060] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0061] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] Refer to the following Figures 1 to 19 The invention describes a resistance-adjustable cover and a battery according to some embodiments of the present application.

[0064] Embodiment 1

[0065] See also Figures 1 to 9 As shown, an embodiment of the present application provides a resistance adjustable cover, comprising: a cover body 1, a positive pole 2, an electrical connector 3, a resistor 4, an adjusting member 5, an insulating support 7, a conductive member 8 and an insulating seat 9; wherein the positive pole 2 and the insulating seat 9 are both mounted on the cover body 1; the resistor 4 is mounted on the insulating seat 9 and is insulated from the cover body 1 by the insulating seat 9, and the resistor 4 is electrically connected to the positive pole 2 through the electrical connector 3; the insulating support 7 is mounted on the insulating seat 9;

[0066] The adjusting member 5 is movably mounted on the resistor 4 and the insulating support 7, and there are multiple adjusting members 5; the multiple adjusting members 5 are electrically connected to the cover body 1 through the conductive member 8, and by moving the adjusting member 5, the adjusting member 5 can be matched or separated with different positions of the resistor 4 to change the resistance value of the resistor 4 connected to the circuit. It can be seen that the above-mentioned positive electrode column 2, electrical connector 3, resistor 4, adjusting member 5, conductive member 8 and cover body 1 constitute a resistance adjustable circuit, that is, in practice, a resistance adjustable structure is set between the positive electrode column 2 and the metal cover body 1 such as an aluminum plate.

[0067] According to the structure described above, the adjustable resistance cover provided by the present application is applied to the battery. In the initial state, the multiple adjustment components 5 are supported on the insulating support 7, but the multiple adjustment components 5 and the resistor 4 are in a separated state. During the production process or the use process, the voltage value between the positive electrode column 2 and the cover body 1 is monitored at all times. When the voltage value is greater than the marked value, which will cause corrosion of the shell 14, one of the adjustment components 5 can be moved and inserted into the resistor 4 to cooperate with the resistor 4, thereby connecting a certain resistance in the circuit, and the voltage value between the positive electrode column 2 and the cover body 1 is monitored at all times. If the detected voltage value is still greater than the marked value, it will cause corrosion of the shell 14. If the voltage value of the positive electrode column 2 and the cover plate body 1 is less than or equal to the standard value, it is necessary to continue to adjust. Specifically, the adjusting member 5 used for the first adjustment is removed from the resistor 4 to separate the two, and then another adjusting member 5 is inserted into the resistor 4. That is to say, only one adjusting member 5 is always inserted into the resistor 4, so as to continuously adjust the resistance value connected to the circuit. According to this method, the adjusting members 5 at different positions are inserted in turn until the voltage value detected between the positive electrode column 2 and the cover plate body 1 is less than or equal to the standard value. It should be noted that as the connected resistance value becomes smaller and smaller, the potential difference between the shell 14 and the positive electrode column 2 becomes smaller and smaller, and thus the shell 14 is less likely to be electrochemically corroded.

[0068] It can be seen that the present application provides a cover plate with adjustable resistance, which ensures that the shell voltage of the battery remains normal throughout the entire use cycle by connecting an adjustable resistance structure between the positive electrode column 2 and the cover plate body 1, thereby avoiding the occurrence of safety problems such as corrosion, leakage and short circuit of the shell 14, such as aluminum shell, effectively extending the service life of the battery, ensuring the battery performance, and improving the customer's experience.

[0069] In this embodiment, preferably, Figure 3 , Figure 7 , Fig. 9 , Fig.10 and Fig.13 As shown, the resistor 4 is formed with an insertion hole 43, the insulating support 7 is formed with an avoidance through hole 72, and the adjustment member 5 is movably inserted into the avoidance through hole 72 and the insertion hole 43 in sequence, and can move along the insertion hole 43 and the avoidance through hole 72.

[0070] According to the structure described above, by moving the adjusting member 5, the adjusting member 5 can be inserted into the resistor 4, or pulled out from the resistor 4. It should be noted that: in the process of moving the adjusting member 5, the adjusting member 5 will always be inserted in the avoidance through hole 72 of the insulating support member 7, so that the insulating support member 7 can always effectively support the adjusting member 5 to prevent it from tilting, falling, etc.

[0071] In this embodiment, preferably, Figure 7 and Fig.12 As shown, the insulating support 7 is formed with a first installation cavity 71 penetrating through one end thereof close to the cover body 1 , and the conductive component 8 is installed in the first installation cavity 71 .

[0072] Further, preferably, when the insulating support member 7 is installed on the insulating seat 9, the insulating seat 9 is formed with a second installation cavity 91 running through the top and bottom thereof, the insulating support member 7 is installed in the second installation cavity 91, and the conductive component 8 is in contact with the cover body 1 through the first installation cavity 71 and the second installation cavity 91.

[0073] According to the structure described above, it can be known that by opening a second installation cavity 91 running through the top and the bottom on the insulating seat 9 and opening a first installation cavity 71 running through the bottom on the insulating support 7, the conductive component 8 in the first installation cavity 71 can contact the cover body 1 at the bottom of the insulating seat 9, thereby achieving electrical connection.

[0074] Further, preferably, the insulating support member 7 can be connected to the insulating seat 9 by gluing or integral injection molding.

[0075] It should be noted that the insulating support member 7 is not limited to being installed on the insulating seat 9, it can also be installed on the cover body 1, for example, a mounting groove is set on the cover body 1, and the insulating member is installed in this mounting groove, or the insulating support member 7 is directly injection molded in the mounting groove, and the specific selection is based on actual needs.

[0076] In this embodiment, preferably, Figure 3 and Figure 7 As shown, the adjustable resistance cover also includes a fixing component 10, which is embedded in the insulating seat 9 and insulated from the cover body 1; the fixing component 10 is formed with a groove, the resistor 4 is fixedly installed in the groove, and the two are threadedly connected, and part of the structure of the resistor 4 extends to the outside of the fixing component 10 and the insulating seat 9, and slidably cooperates with the adjustment component 5.

[0077] According to the structure described above, it can be known that the fixing member 10 plays a role in supporting and fixing the resistor 4, making the resistor 4 more firm and more stable, thereby ensuring the stability of the structure.

[0078] Furthermore, preferably, the resistor 4 is detachably connected to the fixing member 10 by thread, which is a detachable connection method, and is convenient for installation and removal. Of course, the resistor 4 and the fixing member 10 may also be connected in other ways, for example, they may be connected by welding or gluing.

[0079] Further, preferably, the fixing member 10 and the insulating seat 9 can be connected by hot melt embedding, ultrasonic welding or injection molding, etc., which can be selected according to actual needs.

[0080] In this embodiment, preferably, Figure 7 and Fig.11 As shown, the positive electrode column 2 is formed with a first mounting groove 21, and one end of the electrical connector 3 is mounted in the first mounting groove 21, so that the electrical connector 3 and the positive electrode column 2 are assembled more firmly and stably. Of course, the first mounting groove 21 may not be provided, depending on actual needs.

[0081] In this embodiment, preferably, Figures 14 to 19 As shown, the resistance adjustable cover plate also includes a mounting pipe 16, a pressing member 17, a transmission member 18 and a spring 19; wherein the mounting pipe 16 is mounted on the insulating support 7, and the inner wall of the mounting pipe 16 is formed with a plurality of long grooves 161 and short grooves 162 extending along its length direction, and the long grooves 161 and the short grooves 162 are alternately arranged in sequence around the axis of the mounting pipe 16; the long grooves 161 and the short grooves 162 are both formed with openings on one side close to the resistor 4; the pressing member 17 is formed with a plurality of long grooves 161 and short grooves 162 extending along its length direction; An avoidance groove 163 extending in the degree direction and located on the side of the short groove 162 close to the insulating support member 7 is formed, and the avoidance groove 163 is communicated with the short groove 162; one end of the pressing member 17 close to the transmission member 18 is formed with tooth grooves 171 arranged in sequence along its circumferential direction; along the length direction of the pressing member 17, and the outer wall area of ​​the pressing member 17 close to the two tooth grooves 171 is formed with a guide protrusion 172, and the guide protrusion 172 can slide into or out of the long groove 161 or the short groove 162;

[0082] Part of the structure of the transmission member 18 is inserted into the pressing tube, and the outer wall of the transmission member 18 is formed with a plurality of matching teeth 181 arranged in sequence and at intervals along its circumferential direction; along the length direction of the adjustment member 5, the adjustment member 5 is connected with the transmission member 18 in sequence; the spring 19 is arranged in the insertion hole 43, and along the length direction of the adjustment member 5, one end of the spring 19 is connected to the inner wall of the insertion hole 43, and one end of the adjustment member 5 is inserted in the spring 19; the outer wall of the adjustment member 5 is provided with a limiting protrusion 51, and the limiting protrusion 51 can abut against the side wall of the insertion hole 43;

[0083] When the pressing member 17 is pressed toward the resistor 4, the mating tooth 181 can slide from the long slot 161 into the tooth groove 171, and when the pressing tube is released, the mating tooth 181 can slide from the tooth groove 171 into the short slot 162, and in this process the spring 19 is compressed by the limiting protrusion 51; when the pressing member 17 is pressed again, the mating tooth 181 slides from the short slot 162 into the tooth groove 171, and when the pressing tube is released, the spring 19 is in a rebound state and pushes the limiting protrusion 51 to reset the adjusting member 5, and the mating tooth 181 can slide from the tooth groove 171 into the long slot 161.

[0084] According to the structure described above, the above components can be used to realize automatic adjustment of the adjustment member 5. The specific operation steps are as follows:

[0085] In the initial state, the guide protrusion 172 of the pressing member 17 and the matching tooth 181 of the transmission member 18 are both located in the long groove 161 of the mounting tube 16, and the adjusting member 5 is located outside the insertion hole 43 of the resistor 4. When the pressing member 17 is pressed toward the resistor 4, the pressing member 17 pushes the transmission member 18 to move toward the resistor 4, thereby causing the matching tooth 181 of the transmission member 18 to move out of the long groove 161 and slide into the tooth groove 17 of the pressing member 17. 1, and when the pressing pipe is released, the matching teeth 181 of the transmission member 18 can slide into the short groove 162 of the mounting member through the tooth groove 171 of the pressing member 17, and the adjusting member 5 is also inserted into the insertion hole 43, and the limiting protrusion 51 of the adjusting member 5 can abut against the side wall of the insertion hole 43, which plays a role in limiting the adjusting member 5, and the spring 19 is compressed by the limiting protrusion 51, gathering elastic potential energy, so that it is stably inserted into the insertion hole 43 of the resistor 4;

[0086] When the pressing member 17 is pressed again, the pressing member 17 pushes the transmission member 18 to move toward the resistor 4, so that the matching tooth 181 of the transmission member 18 moves out of the short groove 162 and slides into the tooth groove 171 of the pressing member 17. When the pressing tube is released, the spring 19 is in a rebound state, contacts the limiting protrusion 51, and pushes the limiting protrusion 51 to drive the adjusting member 5 to reset. The matching tooth 181 of the transmission member 18 can slide from the tooth groove 171 of the pressing member 17 into the long groove 161 of the mounting member. At this time, the adjusting member 5 also moves out of the socket 43, that is, the adjusting member 5 is disconnected from the resistor 4.

[0087] It can be seen that only by pressing the pressing member 17, the adjusting member 5 can be automatically extended into or out of the insertion hole 43 of the resistor 4, thereby realizing the connection or disconnection between the adjusting member 5 and the resistor 4. The operation is simple and convenient, saving time and effort.

[0088] Furthermore, preferably, the adjusting member 5 and the transmission member 18 can be connected in a plug-in manner, that is, one of them is provided with a slot, and the end of the other can be plugged into the slot. Of course, the connection method between the adjusting member 5 and the transmission member 18 is not limited to this, and can also be selected according to actual needs.

[0089] Further, preferably, the inner wall of the mounting pipe 16 is formed with an annular protrusion arranged along its circumference, and the above-mentioned long groove 161, short groove 162 and avoidance groove 163 are all formed on the annular protrusion to facilitate grooving. Of course, it is not limited to this, and grooves can also be directly made on the inner wall of the mounting pipe 16.

[0090] Further, preferably, along a length direction perpendicular to the installation pipe 16 , the depth of the long groove 161 is greater than the depth of the short groove 162 .

[0091] In this embodiment, preferably, Figures 16 to 18 As shown, the short groove 162 is a V-shaped groove, and one side wall of the short groove 162 is arranged along the length direction of the adjusting member 5, and the other side wall of the short groove 162 is inclined relative to the length direction of the adjusting member 5 to form a first guiding slope 20; a second guiding slope 201 is formed at the end of the structure between the long groove 161 and the short groove 162, and the first guiding slope 20 and the second guiding slope 201 are arranged in parallel; a third guiding slope 202 is formed along one end of the adjusting member 5 of the mating tooth 181, and the third guiding slope 202 is simultaneously adapted to the first guiding slope 20 and the second guiding slope 201.

[0092] According to the structure described above, it can be known that the parallel guiding inclined surfaces are designed to ensure that the mating teeth 181 can move freely in the long slot 161 and the short slot 162 to avoid jamming.

[0093] In this embodiment, preferably, Figure 2 As shown, the cover body 1 is formed with a second mounting groove 101, and the insulating seat 9 is installed in the second mounting groove 101, so that the insulating seat 9 and the cover body 1 are assembled more firmly and stably, and preferably, in order to further ensure the firmness and stability of the assembly of the insulating seat 9 and the cover, glue can also be applied to the side walls and bottom of the insulating seat 9 to bond the insulating seat 9 and the inner wall of the second mounting groove 101 together.

[0094] In this embodiment, preferably, Figure 7 As shown, the conductive member 8 is a flexible connecting wire that meets the conductive requirements and is easy to bend, etc., and the conductive performance is not affected. Preferably, the conductive member 8 can be welded to the adjusting member 5 and the cover body 1 respectively, and it should be noted that a certain length of wire is reserved between two adjacent adjusting members 5, so that when one adjusting member 5 is pulled, the other one is not affected. Of course, it is not limited to this, and the conductive member 8, that is, the wire, can also have no connection relationship with the adjusting member 5, but only contact. For example, holes can be opened on all the adjusting members 5, and the wires can be inserted into each hole in turn; similarly, the conductive member 8 can also have no connection relationship with the cover body 1, but only maintain contact.

[0095] It should also be noted that: the structure of the conductive component 8 is not limited to this. The conductive component 8 can also adopt a metal spring structure. When the conductive component 8 is a metal spring, the adjustment component 5 has no connection with the conductive component 8. When an electrical connection is required, only contact is required. Preferably, the conductive component 8 can be installed on the inner wall of the first installation cavity 71, and the bottom end of the conductive component 8 is in contact with the cover body 1, or is connected by welding or the like.

[0096] In this embodiment, preferably, Fig.13 As shown, the adjusting member 5 is a rod, and a gripping portion 6 is formed at one end of the adjusting member 5 exposed from the insulating support 7 .

[0097] It can be known from the structure described above that the gripping portion 6 is convenient for the operator to grip, thereby facilitating pushing and pulling the adjusting member 5 .

[0098] In this embodiment, preferably, Fig.10 As shown, a plurality of adjusting components 5 are arranged in sequence along the first preset direction a, the structural layout is reasonable, and the resistance value can be adjusted by adjusting the size of the area where the adjusting components 5 at different positions are connected to the circuit.

[0099] Further, preferably, the first preset direction a, the height direction of the resistor 4, the height direction of the insulating support 7, the thickness direction of the cover body 1, the depth direction of the first mounting cavity 71, and the depth direction of the second mounting cavity 91 are all the same, but of course, not limited to this.

[0100] In this embodiment, preferably, Fig.10 As shown, the resistor 4 includes a body 41 and a plurality of protrusions 42 , and the plurality of protrusions 42 are sequentially arranged on the outer wall of the body 41 along a first preset direction a, so that the resistance value is distributed in a leaping manner along the first preset direction a.

[0101] According to the structure described above, it can be known that by embedding multiple protrusions 42 on the main body 41, a leap-forward distribution of resistance is achieved to meet the use requirements, and it should be noted that: preferably, the material of the protrusion 42 is different from the material of the main body 41, and the materials of the multiple protrusions 42 arranged in sequence along the vertical direction are also different. Of course, not limited to this, the protrusion 42 can also be the same as the material of the main body 41. By changing the number or width of the protrusions 42, a leap-forward distribution of resistance, that is, a non-uniform distribution, is achieved. For example: in this embodiment, the resistor 4 is divided into four regions from top to bottom along the first preset direction a, the resistance value of the first region R1∈(0Ω, 1Ω), the resistance value of the second region R2∈(2Ω, 20000Ω), the resistance value of the third region R3∈(50000Ω, 100MΩ), and the resistance value of the fourth region R4>100MΩ. Of course, this is just an example.

[0102] Furthermore, preferably, the raised portion 42 is annular and is arranged around the outer circumference of the main body 41. Of course, this is not limited to this, and other structures can also be used. For example, the raised portion 42 can also be a single bump structure, and along the height direction of the main body 41, multiple bumps are arranged on each layer, and multiple bumps are arranged sequentially along the outer circumference of the main body 41, etc.

[0103] It should be noted that the structure of the resistor element 4 is not limited to the above-mentioned structure, and other structures can also be used. For example, the resistor element 4 includes a plurality of resistor parts connected in sequence, so that the resistance value is distributed in a leap-forward manner along the first preset direction a, and preferably, the material of any protrusion 42 is different and is different from the material of the main body 41. Of course, it is not limited to this, and the thickness of the protrusion 42 can also be changed to achieve a leap-forward distribution of the resistance value, that is, a non-uniform distribution.

[0104] In this embodiment, preferably, Figure 2 As shown, the resistance adjustable cover plate also includes an insulating component 11 and a welding ring 12; wherein, the welding ring 12 is arranged on the side of the cover plate away from the pole core 15, and the welding ring 12 is pressed on the outside of the positive electrode column 2, and the insulating component 11 wraps a part of the welding ring 12, so that the welding ring 12 and the cover plate are insulated; the insulating component 11 and the welding ring 12 are both formed with an avoidance through hole 72, and the adjustment component 5 is electrically connected to the positive electrode column 2 through the avoidance through hole 72, and the avoidance through hole 72 plays a role of avoidance.

[0105] Furthermore, preferably, an assembly groove is formed on the outer side wall of the pole, so as to form a mutually embedded structure with the upper plastic during injection molding, so that the overall structure is stronger and more stable.

[0106] Furthermore, preferably, the adjustable resistance cover also includes a lower plastic 13 and other structures, which belong to the prior art and will not be described in detail here.

[0107] In this embodiment, preferably, Figure 6 and Figure 7 As shown, the electrical connection component 3 is connected to the positive electrode column 2 and the resistor 4 respectively by welding, so that the electrical connection component is assembled with the positive electrode column 2 and the resistor 4 more firmly and stably. Of course, this is not limited to this. The electrical connection component can also only contact with the positive electrode column 2 without a connection relationship.

[0108] In this embodiment, preferably, Figure 8 and Fig. 9 As shown, the adjusting member 5 is located on the outer side of the cover body 1 away from the pole core 15 , that is, the adjusting member 5 is exposed to the battery housing 14 , thereby facilitating adjustment.

[0109] In this embodiment, preferably, Figure 8 and Fig. 9 As shown, at least part of the structure of the resistor 4 is located on the outside of the cover body 1 away from the pole core 15, and at least part of the structure of the insulating support 7 is located on the outside of the cover body 1 away from the pole core 15, so that the resistor 4 and the insulating support 7 can be assembled to the adjustment component 5 outside the shell 14.

[0110] Embodiment 2

[0111] See also Figure 1 As shown, the second embodiment of the present application further provides a battery, comprising a housing 14, a pole core 15 and the adjustable resistance cover plate described in the first embodiment, wherein the pole core 15 is disposed in the housing 14, the adjustable resistance cover plate is sealed at the open end of the housing 14, and the cover plate body 1 of the adjustable resistance cover plate is connected to the housing 14. Therefore, all the beneficial technical effects of the adjustable resistance cover plate are provided, and the same technical features and beneficial effects are not repeated.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cover plate with adjustable resistance, characterized in that: include: A cover plate body, a positive pole, an electrical connector, a resistor, an adjusting member, an insulating support, a conductive member and an insulating seat; wherein the positive pole and the insulating seat are both mounted on the cover plate body; the resistor is mounted on the insulating seat and is insulated from the cover plate body by the insulating seat, and the resistor is electrically connected to the positive pole through the electrical connector; the insulating support is mounted on the insulating seat or the cover plate body; The adjusting component is movably mounted on the resistor and the insulating support, and there are multiple adjusting components; the multiple adjusting components are electrically connected to the cover plate body through the conductive component, and by moving the adjusting component, the adjusting component can be matched with or separated from different positions of the resistor to change the resistance value of the resistor connected to the circuit.

2. The adjustable resistance cover according to claim 1, characterized in that: The resistor is formed with an insertion hole, the insulating support is formed with an avoidance through hole, and the adjustment component is movably inserted into the avoidance through hole and the insertion hole in sequence and can move along the insertion hole and the avoidance through hole.

3. The adjustable resistance cover according to claim 2, characterized in that: The adjustable resistance cover also includes a mounting tube, a pressing member, a transmission member and a spring; wherein the mounting tube is mounted on the insulating support, and the inner wall of the mounting tube is formed with a plurality of long grooves and short grooves extending along its length direction, and the long grooves and the short grooves are arranged alternately and sequentially around the axis of the mounting tube; the long grooves and the short grooves are both formed with openings on one side close to the resistor; the pressing member is formed with an avoidance groove extending along its length direction and located on one side of the short groove close to the insulating support, and the avoidance groove is connected to the short groove; the pressing member is formed with tooth grooves sequentially arranged along its circumference at one end close to the transmission member; a guide protrusion is formed along the length direction of the pressing member and on the outer wall area of ​​the pressing member close to two of the tooth grooves, and the guide protrusion can slide into or out of the long groove or the short groove; Part of the structure of the transmission member is inserted into the pressing tube, and the outer wall of the transmission member is formed with a plurality of matching teeth arranged in sequence and at intervals along its circumference; along the length direction of the adjusting member, the adjusting member and the transmission member are connected in sequence; the spring is arranged in the insertion hole, and along the length direction of the adjusting member, one end of the spring is connected to the inner wall of the insertion hole; the outer wall of the adjusting member is provided with a limiting protrusion, and the limiting protrusion can abut against the side wall of the insertion hole and compress the spring; When the pressing member is pressed toward the direction of the resistor, the mating tooth can slide from the long groove into the tooth groove, and when the pressing tube is released, the mating tooth can slide from the tooth groove into the short groove, and in this process the spring is compressed by the limiting protrusion; when the pressing member is pressed again, the mating tooth slides from the short groove into the tooth groove, and when the pressing tube is released, the spring is in a rebound state and pushes the limiting protrusion to reset the adjusting member, and the mating tooth can slide from the tooth groove into the long groove.

4. The adjustable resistance cover according to claim 3, characterized in that: The short groove is a V-shaped groove, and one side wall of the short groove is arranged along the length direction of the adjusting member, and the other side wall of the short groove is inclined relative to the length direction of the adjusting member to form a first guiding inclined surface; A second guide slope is formed at the end of the structure between the long slot and the short slot, and the first guide slope and the second guide slope are arranged in parallel; a third guide slope is formed along one end of the mating tooth, and the third guide slope is adapted to the first guide slope and the second guide slope at the same time.

5. The adjustable resistance cover according to claim 1, characterized in that: The insulating support is formed with a first installation cavity penetrating therethrough and close to one end of the cover plate body, and the conductive component is installed in the first installation cavity.

6. The adjustable resistance cover according to claim 5, characterized in that: When the insulating support is installed on the insulating seat, the insulating seat forms a second installation cavity running through the top and bottom thereof, the insulating support is installed in the second installation cavity, and the conductive component contacts the cover body through the first installation cavity and the second installation cavity.

7. The adjustable resistance cover according to claim 1, characterized in that: The adjustable resistance cover also includes a fixing component, which is embedded in the insulating seat and insulated from the cover body; the fixing component is formed with a groove, the resistor is fixedly installed in the groove, and a part of the structure of the resistor extends to the outside of the fixing component and the insulating seat, and slidably cooperates with the adjusting component.

8. The adjustable resistance cover according to claim 7, characterized in that: The resistor is detachably connected to the fixing member through threads; and / or The resistor is connected to the fixing member by welding or gluing.

9. The adjustable resistance cover according to claim 1, characterized in that: The plurality of adjusting members are arranged sequentially along a first preset direction.

10. The adjustable resistance cover according to claim 9, characterized in that: The resistor comprises a body and a plurality of protrusions, wherein the plurality of protrusions are sequentially arranged on the outer wall of the body along the first preset direction, so that the resistance value is distributed in a leaping manner along the first preset direction.

11. The adjustable resistance cover according to claim 10, characterized in that: The material of any of the protruding parts is different and is different from the material of the main body.

12. The adjustable resistance cover according to claim 9, characterized in that: The resistor element includes a plurality of resistor parts connected in sequence, so that the resistance value is distributed in a leaping manner along the first preset direction.

13. The adjustable resistance cover according to claim 12, characterized in that: The materials of any of the resistors are different.

14. The adjustable resistance cover according to claim 9, characterized in that: The first preset direction, the height direction of the resistor, and the thickness direction of the cover plate body are the same.

15. The cover plate with adjustable resistance according to any one of claims 1 to 14, characterized in that: The adjustable resistance cover plate further comprises an insulating member and a welding ring; wherein the welding ring is arranged on a side of the cover plate away from the pole core, and the welding ring is pressed on the outside of the positive pole, and the insulating member wraps a portion of the welding ring so that the welding ring and the cover plate are insulated; the insulating member and the welding ring are both formed with an avoidance through hole, and the adjusting member is electrically connected to the positive pole through the avoidance through hole; and / or The adjusting member is a rod, and a gripping portion is formed on one end of the adjusting member exposed from the insulating support member; and / or The positive electrode column is formed with a first mounting groove, and one end of the electrical connector is mounted in the first mounting groove; and / or The cover plate body is formed with a second mounting groove, and the insulating seat is mounted in the second mounting groove; and / or The electrical connector is respectively connected to the positive electrode column and the resistor by welding; and / or The conductive member is a flexible connecting wire or a metal spring, and when the conductive member is a flexible connecting wire, the conductive member is connected to the adjusting member by welding; and / or The outer side wall of the pole is formed with a mounting groove; and / or The adjusting member is located on the outer side of the cover plate body away from the pole core; and / or At least part of the structure of the resistor is located on the outer side of the cover plate body away from the pole core; and / or At least a portion of the structure of the insulating support is located on the outer side of the cover plate body away from the pole core.

16. A battery, characterized in that: It comprises a shell, a pole core and an adjustable resistance cover plate as claimed in any one of claims 1 to 15, wherein the pole core is arranged in the shell, the adjustable resistance cover plate is sealed on the open end of the shell, and the cover plate body of the adjustable resistance cover plate is connected to the shell.

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