Pole correction device and battery production system

Abstract

The embodiment of the utility model provides a polar column deviation rectifying device and a battery production system, and relates to the technical field of batteries. The polar column deviation rectifying device comprises a rack and two deviation rectifying units, the two deviation rectifying units are oppositely arranged on the rack in the first direction and are configured to be close to or far away from each other in the first direction; each deviation rectifying unit comprises at least one clamping assembly, and the clamping assemblies are configured to form deviation rectifying holes for clamping and fixing the pole columns in a clamping state. When the cover closing operation is carried out, a battery is placed between the two symmetrical deviation rectifying units, pole columns at the two ends of the battery are clamped and fixed through the clamping assemblies of the two deviation rectifying units, meanwhile, deviation rectifying and resetting can be carried out on the pole columns generating angle deflection, and then on the premise that the end covers and the pole columns of the battery are clamped and fixed, the battery can be closed. And then the battery cover closing process is carried out, so that the possibility of angular deviation of the pole columns at the two ends of the battery in the cover closing process can be reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a pole correction device and a battery production system. Background Art

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] The battery end caps are prone to rotation during the closing process, causing angle deviations of the poles at both ends of the battery, affecting battery performance. Utility Model Content

[0004] The present application provides a pole deviation correction device and a battery production system, which can correct the pole after the angle is deflected.

[0005] In the first aspect, the embodiment of the present application provides a pole correction device, including a frame and two correction units; the two correction units are relatively arranged on the frame along a first direction, and are configured to be able to approach or move away from each other along the first direction, and the first direction is the extension direction of the frame; each correction unit includes at least one clamping assembly, the clamping assembly is configured to operate between a clamping state and an open state, and in the clamping state, a correction hole for clamping and fixing the pole of the battery is formed. When the pole correction device of the present application is performing a cover closing operation, the battery is placed between two symmetrical correction units, and the poles at both ends of the battery are clamped and fixed by the clamping assemblies of the two correction units. At the same time, the poles that have produced angular deflection can also be corrected and reset. Then, on the premise that the end cover and the pole of the battery are clamped and fixed, the battery cover closing process is performed, which can reduce the possibility of angular deviation of the poles at both ends of the battery during the cover closing process and improve the stability of the battery.

[0006] In some embodiments of the present application, the clamping assembly includes a plurality of clamping members for clamping the pole, at least one of the clamping members can move between the clamping state and the open state, and one end of each of the clamping members is provided with a clamping edge, and in the clamping state, the clamping edges of the plurality of clamping members surround the deflection correction hole. The present application utilizes the clamping edges of the clamping members to surround the deflection correction hole, and the shape of the clamping edge can be adaptively processed according to the shape of the pole, so that the deflection correction hole can better match the pole.

[0007] In some embodiments of the present application, the plurality of clamping members are arranged along the circumferential direction, and the clamping edge is located at one end of the clamping member close to the center of the circle in the circumferential direction. The present application arranges the plurality of clamping members along the circumferential direction, so that the plurality of clamping members can form a receiving space for the pole to extend into when opened, and can also facilitate the pole to enter the correction hole during correction, and can also reduce the possibility of the pole escaping from the correction hole.

[0008] In some embodiments of the present application, the clamping assembly further includes a driving mechanism, one driving mechanism is respectively connected to the multiple clamping members, and is used to drive the multiple clamping members to form the correction hole, or multiple driving mechanisms are connected to the multiple clamping members one by one, and are used to drive the multiple clamping members to form the correction hole. The present application drives the clamping members to perform a clamping action or an opening action by driving the clamping members to realize the automation of correction, which can improve the correction efficiency.

[0009] In some embodiments of the present application, the driving mechanism includes a parallel opening and closing cylinder, and the parallel opening and closing cylinder includes a plurality of moving parts, and the plurality of moving parts are connected one by one with the plurality of clamping parts, and are used to drive the plurality of clamping parts to move between the clamping state and the open state. The present application drives the movement of the plurality of clamping parts by a parallel opening and closing cylinder, which is not only convenient to operate and has a more compact structure, but also improves the consistency of the movement of the plurality of clamping parts.

[0010] In some embodiments of the present application, the clamping member has a first surface and a second surface opposite to each other, the first surface is arranged facing the other deviation-correcting unit, the first surface is provided with a guide surface at the clamping edge, and the distance between the guide surface and the second surface in the first direction gradually increases from one end of the clamping member away from the deviation-correcting hole to the other end close to the deviation-correcting hole. The present application facilitates the entry of the pole into the deviation-correcting hole by providing a guide surface on the first surface.

[0011] In some embodiments of the present application, the first surface is provided with a limiting step adjacent to the clamping edge, and in the clamping state, the limiting steps of the multiple clamping members form a limiting groove, and the limiting groove is used to accommodate the end cover of the battery. The present application provides limiting steps on the clamping members, and uses the limiting groove formed by the limiting steps in the clamping state to accommodate and limit the end cover of the battery, thereby improving the position stability of the battery end cover during the deviation correction process.

[0012] In some embodiments of the present application, the deviation correction unit further includes a first position adjustment component, which is connected between the frame and the clamping component and is used to drive the clamping component to move along the first direction. The present application drives the clamping component to move along the first direction by configuring the first position adjustment component, so that the two deviation correction units can move closer to or farther from each other to match the size of the battery.

[0013] In some embodiments of the present application, the deflection correction unit further includes a second position adjustment component, the second position adjustment component is connected between the first position adjustment component and the clamping component, the second position adjustment component of one of the deflection correction units is used to drive the clamping component connected thereto to move along a second direction, and the second position adjustment component of another deflection correction unit is used to drive the clamping component connected thereto to move along a third direction, and the second direction and the third direction are respectively at an angle less than or equal to 90° with the first direction. By configuring the second position adjustment component, the present application can adjust the position of one of the clamping components in the second direction and adjust the position of the other clamping component in the third direction, which is not only more conducive to adjusting the two deflection correction units to a suitable position to perform deflection correction operations, but also facilitates the two deflection correction units to drive the two end caps to move during the closing process.

[0014] In some embodiments of the present application, the frame includes a base plate and two support members, the two support members are arranged relative to the base plate along the first direction, and the two correction units are installed one by one on the two support members. The present application uses two support members to install two correction units one by one, so that the height of the two correction units can be increased on the frame.

[0015] In some embodiments of the present application, the support member is connected to the substrate in a positionally adjustable manner along the first direction. The present application designs the support member to be adjustable along the first direction on the substrate, so as to preliminarily adjust the positions of the two deviation correction units.

[0016] In some embodiments of the present application, the substrate is provided with a plurality of locking holes arranged at intervals along a first direction, the support member includes a locking portion covering at least one of the locking holes, the locking portion is provided with a positioning hole and a locking member, the length of the positioning hole extends along the first direction and is connected to the locking hole, one end of the locking member passes through the positioning hole and is connected to the locking hole, and the other end presses the locking portion. The present application realizes the positioning and locking of the support member on the substrate by configuring a locking member, a positioning hole and a locking hole. When the position of the support member is adjusted along the first direction, the connection between the locking member and the locking hole can be released, and then the support member is moved to the desired position, and then the locking member and the locking hole are connected to complete the locking and fixing of the support member and the substrate. The structure is simple and easy to operate.

[0017] In a second aspect, an embodiment of the present application provides a battery production system, including a pole correction device as described in the above technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a pole deviation correction device provided in some embodiments of the present application;

[0020] Figure 2 A side view of a pole deviation correction device provided in some embodiments of the present application;

[0021] Figure 3 A schematic diagram of the structure of a clamping assembly of a pole deviation correction device provided in some embodiments of the present application in a clamping state;

[0022] Figure 4 A side view of a clamping assembly of a pole deviation correction device provided in some embodiments of the present application in a clamping state;

[0023] Figure 5 A schematic diagram of the structure of a clamping assembly of a pole deviation correction device provided in some embodiments of the present application in an open state;

[0024] Figure 6 A side view of a clamping assembly of a pole deviation correction device provided in some embodiments of the present application in an open state;

[0025] Figure 7 A partial structural schematic diagram of a pole deviation correction device provided in some embodiments of the present application (I);

[0026] Figure 8 A partial structural schematic diagram of a pole correction device provided in some embodiments of the present application (II).

[0027] The reference numerals of the specific embodiments are as follows:

[0028] 100. Pole deviation correction device;

[0029] 10. rack; 11. base plate; 111. locking hole; 112. slide rail; 12. support member; 121. locking portion; 1211. adjustment hole; 1212. locking member;

[0030] 20. Correction unit; 21. Clamping assembly; 2101. Correction hole; 211. Clamping member; 2111. Clamping edge; 2112. First surface; 21121. Guide surface; 21122. Position-limiting step; 21123. Position-limiting groove; 2113. Second surface; 212. First mounting member; 213. Driving mechanism; 2131. Parallel opening and closing cylinder; 21311. Moving member; 22. First adjustment assembly; 221. First linear reciprocating motion mechanism; 23. Second adjustment assembly; 231. Second linear reciprocating motion mechanism; 232. Second mounting member;

[0031] X, first direction; Y, second direction; Z, third direction; W, fourth direction; R, circumferential direction. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0034] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0037] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0038] The term "plurality" used in the present application refers to two or more (including two).

[0039] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a battery box for encapsulating one or more battery cells. The battery box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0040] The battery cells mentioned in the embodiments of the present application may be lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., which are not limited in the embodiments of the present application. The battery cells may be cylindrical, flat, cuboid or other shapes, which are not limited in the embodiments of the present application.

[0041] The battery cell mentioned in the embodiments of the present application may include an electrode assembly and an electrolyte, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer, and the positive active material layer is coated on the surface of the positive current collector; the positive current collector includes a positive electrode coating area and a positive electrode ear connected to the positive electrode coating area, the positive electrode coating area is coated with a positive electrode active material layer, and the positive electrode ear is not coated with a positive electrode active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive electrode active material layer includes a positive electrode active material, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, and the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0042] The battery cells described in the embodiments of the present application are suitable for batteries and electrical devices using batteries. Electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0043] Below, the embodiments of the present application are described in detail.

[0044] At present, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0045] In the production process of power batteries, a capping process is required. Taking cylindrical batteries as an example, the capping process includes installing the positive end cap and the negative end cap at both ends of the battery on the battery casing. During the capping process, the end caps are prone to rotate, causing the positive and negative poles to deflect at an angle. The positive and negative poles cannot remain symmetrical, and for end caps with multi-layer adapters, it is also easy to cause large deformation of the adapters, which undoubtedly affects the stability of the battery.

[0046] Therefore, how to reduce the deflection of the end cover during the closing process of the battery is an important issue in battery production and processing.

[0047] In view of this, the present application provides a technical solution, which provides a pole correction device, which corrects and fixes the positive and negative poles of the battery respectively through the correction holes of two correction units, and then performs the covering operation, which can ensure the stability of the end cover during the covering operation and reduce the possibility of rotation of the end cover.

[0048] The following is combined with Figure 1-8 The specific structure of the pole correction device provided in the embodiment of the present application is described.

[0049] Combined with Figure 1 and attached Figure 2 As shown in the figure, an embodiment of the present application provides a pole correction device 100, including a frame 10 and two correction units 20; the two correction units 20 are relatively arranged on the frame 10 along a first direction X, and are configured to be able to approach or move away from each other along the first direction X, and the first direction X is the extension direction of the frame 10; each correction unit 20 includes at least one clamping component 21, and the clamping component 21 is configured to move between a clamping state and an open state, and in the clamping state, a correction hole 2101 is formed to clamp and fix the pole of the battery.

[0050] The pole correction device 100 of this embodiment can be used as a part of the cover closing device of the battery production system. Taking the cover closing device of the cylindrical battery as an example, the cover closing device is used to weld the positive terminal cover and the negative terminal cover of the battery to the two ends of the battery respectively. At this time, the frame 10 of this embodiment can also be used to install the welding assembly of the cover closing device (not shown in the figure). Of course, the pole correction device 100 of this embodiment can also be independent of the cover closing device, and the two cooperate with each other. After the pole correction device 100 fixes the end covers of the positive and negative electrodes, the cover closing device is used to weld the end covers to the battery shell.

[0051] In this embodiment, the two correcting units 20 are relatively arranged on the frame 10 along the first direction X, wherein the first direction X refers to the extension direction of the frame 10, and the extension direction can be understood as the length or width direction of the frame 10. The symmetrical arrangement of the two correcting units 20 means that the correcting holes 2101 formed by the two correcting units 20 are relatively arranged and symmetrical about the middle of the two correcting units 20 in the first direction X.

[0052] The number of clamping components 21 of each correction unit 20 of this embodiment can be one or more. Taking a cylindrical battery as an example, the number of positive poles is two, the number of negative poles is also two, and the cross-sectional shape of the poles is approximately semicircular. Therefore, the number of clamping components 21 of each correction unit 20 is two, and the shape of the correction hole 2101 surrounded by each clamping component 21 is also approximately semicircular.

[0053] The shape of the correction hole 2101 of this embodiment can fix the pole. The shape and size of the correction hole 2101 and the pole can be completely consistent, or the correction hole 2101 can be larger than the pole at a certain position without affecting the clamping and fixing of the pole.

[0054] When correcting the pole of the battery, the battery is placed between two symmetrical correcting units 20, and the poles at both ends of the battery are clamped by the clamping components 21 of the two correcting units 20. For the poles on the end cover that are deflected, since the correcting holes 2101 of the two correcting units 20 are symmetrically arranged, the poles that have angular deflection can be reset during the clamping process, so that the poles at both ends are also symmetrically distributed, and then the battery cover welding process is carried out. In this way, the possibility of angular deviation of the poles at both ends of the battery can be reduced, and the stability of the battery is improved.

[0055] In some examples, optionally, the clamping assembly 21 includes a plurality of clamping members 211 for clamping the pole, at least one clamping member 211 is capable of moving between a clamping state and an open state, a clamping edge 2111 is provided at one end of each clamping member 211, and in the clamping state, the clamping edges 2111 of the plurality of clamping members 211 form a correction hole 2101.

[0056] The multiple clamping members 211 refer to at least two clamping members 211, for example, three clamping members 211 are shown in the figure. The multiple clamping members 211 used to clamp the pole should be understood as at least one of the clamping members 211 being able to move to a certain extent, so as to enclose the deviation correction hole 2101 in the clamping state and to enclose a receiving space larger than the pole in the open state. For example, the multiple clamping members 211 of this embodiment can all move, or one or more of the clamping members 211 are fixed, while the other clamping members 211 move.

[0057] In some examples, optionally, the clamping assembly 21 of the present embodiment may include a first mounting member 212 as shown in the figure, and one or more of the plurality of clamping members 211 may perform a clamping action on the first mounting member 212, and the clamping action may be driven manually or by the driving mechanism 213 described below to drive the clamping member 211 to move.

[0058] When the pole of the battery to be covered deflects, the action of the clamping member 211 can drive the pole and the end cover to rotate, so that the pole matches the deviation correction hole 2101. In addition, the deviation correction hole 2101 is formed by the clamping edge 2111 of the clamping member 211, and the shape of the clamping edge 2111 can be adaptively processed according to the shape of the pole, so that the deviation correction hole 2101 can better match the pole.

[0059] In some examples, optionally, a plurality of clamping members 211 are arranged along the circumferential direction R, and the clamping edge 2111 is located at one end of the clamping member 211 close to the center of the circumferential direction R.

[0060] The multiple clamping members 211 of this embodiment can be specifically arranged along the circumferential direction R on the aforementioned first mounting member 212, or arranged along the circumferential direction R on the following driving mechanism 213. The multiple clamping members 211 move in a direction approaching or away from the center of the circle to enclose a correction hole 2101 or a accommodating space.

[0061] In this embodiment, by arranging the plurality of clamping members 211 along the circumferential direction R, the plurality of clamping members 211 can form a receiving space for the pole to extend into when in the open state, and can also reduce the possibility of the pole escaping from the correction hole 2101 in the clamped state.

[0062] In some examples, optionally, the clamping edges 2111 of one or more clamping members 211 may be provided with a notch (not shown in the figure) that does not affect the clamping, or it may be understood that a certain position of the clamping edges 2111 of some clamping members 211 may be appropriately enlarged to better accommodate the deflected pole.

[0063] Combined with Figure 3-6 As shown in , in some examples, optionally, the clamping assembly 21 also includes a driving mechanism 213, and one driving mechanism 213 is respectively connected to the multiple clamping members 211, and is used to drive the multiple clamping members 211 to form the correction hole 2101, or, multiple driving mechanisms 213 are connected one by one to the multiple clamping members 211, and are used to drive the multiple clamping members 211 to form the correction hole 2101.

[0064] The driving mechanism 213 of this embodiment can be installed on Figure 1 and Figure 2On the first mounting member 212, the driving mechanism 213 drives the clamping member 211 to move on one end face of the driving mechanism 213. The driving method can be that one driving mechanism 213 drives multiple clamping members 211 to move synchronously, or multiple driving mechanisms 213 are connected to multiple clamping members 211 one by one to drive multiple clamping members 211 to move.

[0065] When multiple driving mechanisms 213 are used to drive multiple clamping members 211 to move in a one-to-one manner (this embodiment is not shown in the figure), the driving mechanism 213 includes multiple linear reciprocating motion structures, which can be a combination of a cylinder, an electric cylinder, a motor and a gear set.

[0066] In this embodiment, the driving mechanism 213 drives the clamping member 211 to move to form the correction hole 2101 or the accommodating space, thereby realizing the automation of correction and improving the correction efficiency.

[0067] In some examples, optionally, the driving mechanism 213 includes a parallel opening and closing cylinder 2131, the parallel opening and closing cylinder 2131 includes a plurality of moving parts 21311, the plurality of moving parts 21311 are connected one by one to the plurality of clamping parts 211, and are used to drive the plurality of clamping parts 211 to move between a clamping state and an open state to enclose a correction hole or form the above-mentioned accommodating space.

[0068] Taking the example of three clamping members 211 in the figure, three slideways (not shown in the figure) are provided at one end of the cylinder body of the parallel opening and closing cylinder 2131, and each slideway is slidably connected to a moving member 21311, and the extension directions of the three slideways form an angle of 120° between each other.

[0069] The parallel opening and closing cylinder 2131 is a structure in the related art that drives multiple clamps to move synchronously, which includes a cylinder body, a piston rod located in the cylinder body, and multiple transmission components (not shown in the figure). The transmission component is used to convert the structure of the piston rod moving linearly along the first direction X into linear motion in other directions perpendicular to the first direction X. The transmission component can be a gear rack component or a crank component.

[0070] When the transmission assembly is a gear rack assembly, the piston rod is provided with a plurality of teeth along the circumferential direction, each tooth is connected to a set of gear racks, the racks are connected to the moving member 21311, and the linear motion of the piston rod drives the gear to rotate, thereby driving the linear motion of the rack and the moving member 21311, and finally driving the plurality of clamping members 211 to approach or move away from the center of the circle in the aforementioned circumferential direction R. Similarly, when one end of a connecting rod of the crank assembly of the transmission assembly is hinged to the piston rod, and the other end is hinged to one end of another connecting rod, the other end of the other connecting rod is hinged to a moving member 21311 that drives the clamping member 211 to move. Since the parallel opening and closing cylinder 2131 is a technology well known to those skilled in the art, this embodiment is not only illustrated with drawings and too much principle description.

[0071] In this embodiment, a parallel opening and closing cylinder 2131 is used to drive the multiple clamping members 211 to move, which is not only convenient to operate and has a more compact structure, but also improves the consistency of the movements of the multiple clamping members 211.

[0072] Of course, the structural form of a driving mechanism 213 in this embodiment that drives multiple clamping members 211 to move is not limited to the parallel opening and closing cylinders 2131, and can also be a hydraulic clamp, a mechanical clamp and the like, which are not listed one by one in this embodiment.

[0073] Combine again with Figure 3-6 As shown in, in some examples, optionally, the clamping member 211 has opposite first and second surfaces 2112 and 2113, the first surface 2112 is arranged to face the other correction unit 20, and the first surface 2112 is provided with a guide surface 21121 at the clamping edge 2111, and along the direction from one end of the clamping member 211 away from the correction hole 2101 to the other end close to the correction hole 2101, the distance between the guide surface 21121 and the second surface 2113 in the first direction X gradually increases.

[0074] The first surface 2112 of this embodiment is the surface of the clamping member 211 of the correcting unit 20 facing another correcting unit 20 . By providing a guide surface 21121 on the first surface 2112 , it is convenient for the pole to enter the accommodating space surrounded by multiple clamping components 21 .

[0075] In some examples, optionally, the first surface 2112 is provided with a limiting step 21122 adjacent to the clamping edge 2111, and in the clamping state, the multiple limiting steps 21122 of the multiple clamping members 211 form a limiting groove 21123, and the limiting groove 21123 is used to accommodate the end cover of the battery.

[0076] When the battery is a cylindrical battery, the shape of the limiting step 21122 of this embodiment can be an arc as shown in the figure. Multiple limiting steps 21122 can form a structure that is approximately annular in the clamping state, and form an annular limiting groove 21123 with multiple first surfaces 2112 of multiple clamping members 211. The radial dimension of the limiting groove 21123 can be slightly larger than the radial dimension of the end cover of the battery, or it can be equal to the radial dimension of the end cover of the battery.

[0077] This embodiment utilizes the limiting groove 21123 formed by the limiting step 21122 in the clamping state to accommodate and limit the end cover of the battery, thereby reducing the possibility of unnecessary displacement of the end cover during the closing process and improving the position stability of the battery end cover during the correction process.

[0078] Combined with Figure 7 As shown in , in some examples, optionally, the correction unit 20 also includes a first positioning component 22, which is connected between the frame 10 and the clamping component 21 and is used to drive the clamping component 21 to move along the first direction X.

[0079] The first positioning assembly 22 is configured to drive the clamping assembly 21 to move along the first direction X, so that the two deviation correcting units 20 can be moved closer to or farther from each other to match the size of the battery.

[0080] In some examples, optionally, the first positioning assembly 22 of the present embodiment includes a first linear reciprocating motion mechanism 221, which can be a structure such as a cylinder, an electric cylinder, a hydraulic cylinder, a motor gear set, etc. mounted on a bracket. Taking the cylinder structure shown in the figure as an example, the cylinder body of the cylinder is mounted on the frame 10, and the piston rod of the cylinder is slidably mounted on the frame 10. The piston rod is directly or indirectly connected to the above-mentioned first mounting member 212 to drive the clamping member 211 and the driving mechanism 213 on the first mounting member 212 to move.

[0081] In some examples, optionally, the correcting unit 20 also includes a second positioning component 23, which is connected between the first positioning component 22 and the clamping component 21, wherein the second positioning component 23 of one correcting unit 20 is used to drive the clamping component 21 connected thereto to move along the second direction Y, and the second positioning component 23 of the other correcting unit 20 is used to drive the clamping component 21 connected thereto to move along the second direction Y, and the second direction Y and the third direction Z are respectively at an angle less than or equal to 90° with the first direction X.

[0082] by Figure 7For example, when the angles formed between the second direction Y and the third direction Z and the first direction X are respectively less than 90°, and the two clamping components 21 are symmetrical about the first direction X, the second direction Y and the third direction Z are symmetrical about the fourth direction W, and the fourth direction W is perpendicular to the first direction X. When one of the clamping components 21 of this embodiment is along the second direction Y, the clamping component 21 has components moving along the first direction X and the fourth direction W. Similarly, when the other clamping component 21 is along the third direction Z, the clamping component 21 has components moving along the first direction X and the fourth direction W.

[0083] When the angles formed between the second direction Y and the third direction Z and the first direction X are respectively equal to 90°, the second direction X, the third direction Y and the fourth direction W are in the same direction and are perpendicular to the first direction X (this embodiment is not shown in the figure).

[0084] In some examples, optionally, the angle between the second direction Y and the first direction X can be 30-60°, for example, 30°, 40°, 45°, 50°, 55°, 60°, etc. Similarly, the angle between the third direction Z and the first direction X is 30-60°. At this time, one of the second mounting members 232 should have a mounting surface inclined along the second direction Y, and the other should have a mounting surface inclined along the third direction Z.

[0085] In this embodiment, the second direction Y and the third direction Z are designed to have an angle less than 90° with the first direction X. When the two clamping components 21 are adjusted along the second direction Y and the third direction Z respectively, the two clamping components 21 can be tilted upward or downward, and the two clamping components 21 can move downward or upward while approaching or moving away from each other, thereby achieving fine adjustment of the positions of the two clamping components 21.

[0086] In some examples, optionally, the second positioning assembly 23 of the present embodiment includes a second linear reciprocating motion mechanism 231 and a second mounting member 232, the second mounting member 232 is mounted on the piston rod of the aforementioned first linear reciprocating motion mechanism 221, and can move along the first direction X with the piston rod, the second linear reciprocating motion mechanism 231 is mounted on the second mounting member 232, and the second linear reciprocating motion mechanism 231 can also be a cylinder, an electric cylinder, a hydraulic cylinder, a motor gear set and other structures. Taking the cylinder structure shown in the figure as an example, the cylinder body of the cylinder is mounted on the second mounting member 232, and the piston rod of the cylinder is slidably mounted on the second mounting member 232, and the piston rod is directly fixedly connected to the above-mentioned first mounting member 212 to drive the clamping member 211 and the driving mechanism 213 on the first mounting member 212 to move.

[0087] Combined with Figure 8As shown in , in some examples, optionally, the frame 10 includes a base plate 11 and two support members 12 , the two support members 12 are arranged relatively to the base plate 11 along the first direction X, and the two correction units 20 are installed on the two support members 12 one by one.

[0088] The shape of the substrate 11 of the present embodiment should be understood in a broad sense. It can be a plate-like member or a block-like member, and of course it can also be a member of other shapes, not necessarily a plate-like member. The support member 12 of the present embodiment can be in the I-shape as shown in the figure, and of course it can be in other shapes, as long as it satisfies the installation of the above-mentioned first linear reciprocating motion mechanism 221. This embodiment does not impose too many restrictions on this.

[0089] In this embodiment, two correcting units 20 are installed in a one-to-one correspondence through two supporting members 12 , so that the heights of the two correcting units 20 can be increased on the frame 10 .

[0090] In some examples, optionally, the support member 12 is connected to the substrate 11 in a manner that its position along the first direction X is adjustable.

[0091] In this embodiment, “the support member 12 is adjustable in position along the first direction X” should be understood as the support member 12 can move on the substrate 11 along the first direction X and can be fixed after the movement. Similarly, the aforementioned adjustment of the correcting unit 20 in the first direction X should be understood as the correcting unit 20 can move on the frame 10 along the first direction X and can be fixed after the movement.

[0092] The present application designs the support member 12 to be adjustable along the first direction X on the substrate 11 so as to preliminarily adjust the positions of the two deviation-correcting units 20 , and then fine-tune them through the aforementioned first positioning component 22 and second positioning component 23 .

[0093] The structural form of the support member 12 of this embodiment adjusting the position on the substrate 11 along the first direction X may be the same as or different from the structural form of the adjustment of the correction unit 20 along the first direction X described above.

[0094] The substrate 11 is provided with a plurality of locking holes 111 arranged at intervals along the first direction X, and the support member 12 includes a locking portion 121 covering at least one locking hole 111, and the locking portion 121 is provided with a positioning hole 1211 and a locking member 1212, and the length of the positioning hole 1211 extends along the first direction X and is connected to the locking hole 111, one end of the locking member 1212 passes through the positioning hole 1211 and is connected to the locking hole 111, and the other end presses the locking portion 121.

[0095] The adjustment hole 1211 of this embodiment can be a waist-shaped through hole as shown in the figure or a through hole structure of other shapes with an extended length in the first direction X. The locking member 1212 can be a bolt or a rivet. When the locking member 1212 is a bolt, the locking hole 111 of this embodiment is a screw hole.

[0096] In addition, a slide rail 112 may be provided on the base plate 11 of the present embodiment, and the support member 12 is slidably connected to the slide rail 112 to improve the stability of the support member 12 during the adjustment process.

[0097] The support member 12 is positioned and locked on the substrate 11 by configuring the locking member 1212, the positioning hole 1211 and the locking hole 111. When the position of the support member 12 is adjusted along the first direction X, the connection between the locking member 1212 and the locking hole 111 can be released, and then the support member 12 is moved to the desired position, and then the locking member 1212 and the locking hole 111 are connected to complete the locking and fixation of the support member 12 and the substrate 11. The structure is simple and easy to operate.

[0098] Based on the above-mentioned pole correcting device 100, this embodiment also provides a battery production system, which includes the pole correcting device 100 as the above-mentioned technical solution. In addition, the battery production system can also include a covering device for welding the end cover and the battery shell. The pole correcting device 100 can be used as a part of the covering device, or the pole correcting device 100 and the covering device are independent of each other.

[0099] Finally, please see the attached Figure 1-8As shown in , this embodiment provides a pole correction device 100, including a frame 10 and two correction units 20; the two correction units 20 are relatively arranged on the frame 10 along a first direction X, and are configured to be able to approach or move away from each other along the first direction X, and the first direction X is the extension direction of the frame 10; each correction unit 20 includes at least one clamping assembly 21, and the clamping assembly 21 is configured to move between a clamping state and an open state, and in the clamping state, a correction hole 2101 for clamping and fixing the pole of the battery is formed. The clamping assembly 21 includes a plurality of clamping members 211 for clamping the pole, at least one clamping member 211 can move between a clamping state and an open state, and one end of each clamping member 211 is provided with a clamping edge 2111, and in the clamping state, the clamping edges 2111 of the plurality of clamping members 211 surround the correction hole 2101. The plurality of clamping members 211 are arranged along the circumferential direction R, and the clamping edge 2111 is located at one end of the clamping member 211 close to the center of the circle in the circumferential direction R. The clamping assembly 21 also includes a driving mechanism 213, one driving mechanism 213 is respectively connected to the plurality of clamping members 211, and is used to drive the plurality of clamping members 211 to form a deviation correction hole 2101, or the plurality of driving mechanisms 213 are connected one by one to the plurality of clamping members 211, and are used to drive the plurality of clamping members 211 to form a deviation correction hole 2101. The driving mechanism 213 includes a parallel opening and closing cylinder 2131, and the parallel opening and closing cylinder 2131 includes a plurality of moving members 21311, and the plurality of moving members 21311 are connected one by one to the plurality of clamping members 211, and are used to drive the plurality of clamping members 211 to move between a clamping state and an open state. The clamping member 211 has a first surface 2112 and a second surface 2113 opposite to each other. The first surface 2112 is arranged facing another deviation correction unit 20. The first surface 2112 is provided with a guide surface 21121 at the clamping edge 2111. Along the direction from one end of the clamping member 211 away from the deviation correction hole 2101 to the other end close to the deviation correction hole 2101, the distance between the guide surface 21121 and the second surface 2113 in the first direction X gradually increases. The first surface 2112 is provided with a limiting step 21122 adjacent to the clamping edge 2111. In the clamping state, the limiting steps 21122 of the plurality of clamping members 211 surround a limiting groove 21123, and the limiting groove 21123 is used to accommodate the end cover of the battery. The deviation correction unit 20 also includes a first positioning assembly 22, which is connected between the frame 10 and the clamping assembly 21 and is used to drive the clamping assembly 21 to move along the first direction X. The correcting unit 20 also includes a second positioning component 23, which is connected between the first positioning component 22 and the clamping component 21. The second positioning component 23 of one correcting unit 20 is used to drive the clamping component 21 connected thereto to move along the second direction Y, and the second positioning component 23 of the other correcting unit 20 is used to drive the clamping component 21 connected thereto to move along the third direction Z. The second direction Y and the third direction Z are respectively at an angle less than or equal to 90° with the first direction X.The frame 10 includes a base plate 11 and two support members 12. The two support members 12 are arranged relative to the base plate 11 along a first direction X. Two correcting units 20 are installed one by one on the two support members 12. The support members 12 are connected to the base plate 11 in a positionally adjustable manner along the first direction X. The base plate 11 is provided with a plurality of locking holes 111 arranged at intervals along the first direction X. The support member 12 includes a locking portion 121 covering at least one locking hole 111. The locking portion 121 is provided with a position adjustment hole 1211 and a locking member 1212. The length of the position adjustment hole 1211 extends along the first direction X and is connected to the locking hole 111. One end of the locking member 1212 passes through the position adjustment hole 1211 and is connected to the locking hole 111, and the other end presses the locking portion 121.

[0100] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0101] 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 make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A pole correction device, used for fixing the pole of a battery, wherein two opposite sides of the battery are provided with one pole respectively, characterized in that: It includes a frame and two guiding units; The two deviation-correcting units are arranged relatively to the frame along a first direction, and are configured to be able to approach or move away from each other along the first direction, wherein the first direction is an extension direction of the frame; Each of the deviation-correcting units comprises at least one clamping assembly, wherein the clamping assembly is configured to move between a clamping state and an open state, and in the clamping state, a deviation-correcting hole for clamping and fixing the pole is formed.

2. The pole deviation correction device according to claim 1, characterized in that: The clamping assembly includes a plurality of clamping members for clamping the pole, at least one of the clamping members is capable of moving between the clamping state and the open state, a clamping edge is provided at one end of each of the clamping members, and in the clamping state, the clamping edges of the plurality of clamping members surround the deviation correction hole.

3. The pole deviation correction device according to claim 2, characterized in that: The plurality of clamping members are arranged along a circumferential direction, and the clamping edge is located at one end of the clamping member close to the center of the circle in the circumferential direction.

4. The pole deviation correction device according to claim 2, characterized in that: The clamping assembly also includes a driving mechanism, one of the driving mechanisms is connected to the multiple clamping members respectively, and is used to drive the multiple clamping members to move between the clamping state and the open state, or multiple driving mechanisms are connected to the multiple clamping members one by one, and are used to drive the multiple clamping members to move between the clamping state and the open state.

5. The pole deviation correction device according to claim 4, characterized in that: The driving mechanism comprises a parallel opening and closing cylinder, and the parallel opening and closing cylinder comprises a plurality of moving parts, and the plurality of moving parts are connected to the plurality of clamping parts one by one, and are used to drive the plurality of clamping parts to move between the clamping state and the opening state.

6. The pole deviation correction device according to claim 2, characterized in that: The clamping member has a first surface and a second surface in opposite directions, the first surface is arranged to face the other correcting unit, and the first surface is provided with a guide surface at the clamping edge, and the distance between the guide surface and the second surface in the first direction gradually decreases along the direction from one end of the clamping member away from the correcting hole to the other end close to the correcting hole.

7. The pole deviation correction device according to claim 6, characterized in that: The first surface is provided with a limiting step adjacent to the clamping edge. In the clamping state, the limiting steps of the plurality of clamping members form a limiting groove, and the limiting groove is used to accommodate the end cover of the battery.

8. The pole deviation correction device according to claim 1, characterized in that: The deviation-correcting unit further includes a first position-adjusting component, which is connected between the frame and the clamping component and is used to drive the clamping component to move along the first direction.

9. The pole deviation correction device according to claim 8, characterized in that: The correcting unit also includes a second positioning component, which is connected between the first positioning component and the clamping component. The second positioning component of one of the correcting units is used to drive the clamping component connected thereto to move in a second direction, and the second positioning component of the other correcting unit is used to drive the clamping component connected thereto to move in a third direction. The second direction and the third direction respectively form an angle less than or equal to 90° with the first direction.

10. The pole deviation correction device according to claim 1, characterized in that: The frame includes a base plate and two supporting members, the two supporting members are arranged opposite to the base plate along the first direction, and the two deviation correcting units are installed on the two supporting members one by one.

11. The pole deviation correction device according to claim 10, characterized in that: The support member is connected to the base plate in a positionally adjustable manner along the first direction.

12. The pole deviation correction device according to claim 11, characterized in that: The substrate is provided with a plurality of locking holes arranged at intervals along a first direction, the support member includes a locking portion covering at least one of the locking holes, the locking portion is provided with an adjusting hole and a locking member, the length of the adjusting hole extends along the first direction and is connected to the locking hole, one end of the locking member passes through the adjusting hole and is connected to the locking hole, and the other end presses the locking portion.

13. A battery production system, characterized in that: It comprises a pole deviation correction device as described in any one of claims 1 to 12.

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