Male die structure and die

Abstract

The utility model discloses a male die structure and a die. The male die structure comprises a fixing seat and a sliding part, the sliding part is arranged on the side face of the fixing seat, a first slope is arranged on the side, facing the fixing seat, of the sliding part, and a second slope is arranged on the side, facing the sliding part, of the fixing seat. The first inclined face and the second inclined face are the same in inclination degree and incline towards the direction of the fixing base from top to bottom. The sliding part is slidably connected to the fixed base in the first direction and stops sliding relative to the fixed base when sliding to a preset distance, and the first direction is the height direction of the male die structure. According to the invention, the success rate of demolding of the male die structure during punch forming of the shell of the battery monomer is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a male mold structure and a mold. Background Art

[0002] In recent years, with the rapid development of new energy technology, new energy vehicles have been used more and more widely, gradually replacing traditional fuel vehicles and becoming one of the mainstream means of transportation. As the power source of new energy vehicles, power batteries are one of the core devices of new energy vehicles.

[0003] During the preparation process of the battery cell shell, mold stamping is generally used. How to improve the success rate of demolding the punch structure is a problem that needs to be solved urgently. Utility Model Content

[0004] The embodiments of the present application provide a male mold structure and a mold, which can improve the success rate of demolding the male mold structure during stamping of the shell of a battery cell.

[0005] In the first aspect, an embodiment of the present application provides a punch structure, including a fixed seat and a sliding member, wherein the sliding member is arranged on the side of the fixed seat, a first inclined surface is arranged on the side of the sliding member facing the fixed seat, and a second inclined surface is arranged on the side of the fixed seat facing the sliding member; the inclination of the first inclined surface and the second inclined surface are the same, and the first inclined surface and the second inclined surface are both inclined toward the direction of the fixed seat from top to bottom; the sliding member is connected to the fixed seat by sliding along the first direction, and when it slides to a preset distance, the sliding member stops sliding relative to the fixed seat, and the first direction is the height direction of the punch structure.

[0006] In the above scheme, for the shell of the battery cell with the thickened upper end, the fixed seat and the sliding part are in a closed state during stamping, and there is no sliding between the fixed seat and the sliding part. The punch structure is stamped downward as a whole. After the stamping is completed, the punch structure needs to be separated from the shell. At this time, the restraint on the sliding part can be released, and the sliding part can slide downward relative to the fixed seat along the first direction. Since the first inclined surface and the second inclined surface are inclined from top to bottom in the direction of the fixed seat, the sliding part moves toward the middle during the sliding process until it stops when it slides to a preset distance, and then demolds. At this time, since the width of the punch structure becomes smaller, it interferes with the thickened part of the upper end of the shell, and can be demolded smoothly, and there will be no phenomenon such as burrs and barbs on the shell, which improves the success rate of demolding the punch structure during the stamping of the battery cell shell.

[0007] In some embodiments, the number of the sliding members is two, and the two sliding members are respectively arranged on opposite sides of the fixing seat along the second direction, and the second direction is the width direction of the male mold structure.

[0008] In the above scheme, during demoulding, the two opposite sides of the fixing seat along the second direction will not interfere with the shell, further improving the success rate of the male mold demoulding.

[0009] In some embodiments, a sliding block is provided on one side of the sliding member facing the fixing seat, and the fixing seat is provided with a groove, and the sliding block is slidably engaged with the groove.

[0010] In the above solution, the cooperation between the slider and the slide groove can provide a guiding effect when the slider slides downward.

[0011] In some embodiments, each sliding member is provided with a plurality of sliding blocks arranged at intervals along a third direction, and the third direction is the length direction of the male mold structure.

[0012] In the above solution, by arranging a plurality of sliding blocks along the third direction, the stability of the sliding member when sliding relative to the fixing seat can be improved.

[0013] In some embodiments, grooves are disposed on opposite sides of the fixing seat along the second direction, and the grooves on different sides are arranged alternately, and the second direction is the width direction of the male mold structure.

[0014] In the above solution, by staggering the grooves along the second direction, the overall width of the male mold structure can be reduced, which ensures to a certain extent that the male mold structure will not interfere with the shell of the battery cell during demoulding.

[0015] In some embodiments, the slider includes a protrusion and an abutment, the protrusion is convexly arranged relative to the abutment toward the direction of the fixed seat; the groove includes a step portion and a recessed portion, the recessed portion is recessed relative to the step portion toward the inside of the fixed seat, the protrusion and the recessed portion are slidably matched, the surface of the step portion facing the slider and the surface of the abutment facing the fixed seat are both vertical surfaces; before the sliding member slides relative to the fixed seat, there is a gap between the abutment and the step portion; when the sliding member stops sliding relative to the fixed seat, the abutment is in contact with the step portion.

[0016] In the above scheme, the gap between the abutment and the step portion enables the sliding member to slide smoothly relative to the fixed seat. As the sliding member gradually moves toward the middle when sliding, the surface of the abutment facing the fixed seat contacts the surface of the step portion facing the slider, and since they are both vertical surfaces, friction is generated between the abutment and the step portion, preventing the sliding member from sliding further down, and then the male mold structure is lifted, achieving smooth demoulding of the male mold structure.

[0017] In some embodiments, a third slope is provided on the side of the protrusion facing the fixed seat, and a fourth slope is provided on the side of the recessed portion facing the sliding member. The third slope and the fourth slope have the same inclination, and both are inclined away from the fixed seat from top to bottom.

[0018] In the above scheme, through the cooperation of the third inclined surface and the fourth inclined surface, when the abutting portion contacts the step portion, the fourth inclined surface of the recessed portion has an upward supporting force on the third inclined surface of the protruding portion, thereby further hindering the sliding part from continuing to slide down, thereby improving the stability of the sliding part relative to the fixed seat.

[0019] In some embodiments, each slider includes two abutment portions, and the two abutment portions are respectively arranged on opposite sides of the protrusion along a third direction, and the third direction is the length direction of the male mold structure.

[0020] In the above solution, by providing abutment portions on both sides of the protruding portion along the third direction, the stability of the sliding member when it stops sliding relative to the fixing seat is further improved.

[0021] In some embodiments, the cross-sectional area of ​​the abutting portion gradually increases in a direction from the sliding member to the fixing seat.

[0022] In the above solution, the contact area between the abutting portion and the step portion is increased, thereby increasing the friction between the abutting portion and the step portion, and further improving the stability of the sliding member when it stops sliding relative to the fixed seat.

[0023] In a second aspect, an embodiment of the present application further provides a mold comprising a male mold structure of any of the above-mentioned embodiments.

[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 these drawings without creative work.

[0026] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0027] Figure 2 An exploded view of a battery according to some embodiments of the present application;

[0028] Figure 3 A schematic diagram of the structure of a battery module according to some embodiments of the present application;

[0029] Figure 4 A schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application;

[0030] Figure 5 is a schematic structural diagram of a male mold structure in a closed state provided by some embodiments of the present application;

[0031] Figure 6 is a schematic structural diagram of a male mold structure provided in some embodiments of the present application in a demoulding state;

[0032] Figure 7 is a schematic diagram of the structure of a sliding member provided in some embodiments of the present application;

[0033] Figure 8 It is a schematic diagram of the structure of a fixing base provided in some embodiments of the present application.

[0034] Description of reference numerals:

[0035] 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, upper cover; 30, housing; 400, battery module; 20, battery cell; 22, housing; 21, end cover; 26, electrode terminal; 23, electrode assembly; 500, male mold structure; 50, fixing seat; 51, second inclined surface; 52, groove; 521, step portion; 522, recessed portion; 523, fourth inclined surface; 60, sliding member; 61, first inclined surface; 62, slider; 621, protrusion; 622, abutment portion; 623, third inclined surface; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0036] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0037] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0038] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations 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. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0039] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] In the present application, battery cells may include 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., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0041] 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 box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0042] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of 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 electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0043] The battery cells disclosed in the embodiments of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery cells and batteries disclosed in the present application can be used to form the electrical device, which is beneficial to improving the stability of battery performance and battery life.

[0044] In order to reduce the risk of cracking of the battery cell shell and ensure the energy density of the battery cell, the upper end of the shell is generally thickened. Since the opening of the shell is smaller than the internal size, the convex structure is easily wrapped by the upper end of the shell during demoulding, or the convex structure will cause the upper end of the shell to have burrs and barbs during demoulding, which reduces the success rate of demoulding of the convex structure during stamping of the battery cell shell.

[0045] Batteries produce certain gases, such as hydrogen, during operation. If these gases cannot be effectively discharged, the pressure inside the battery box will continue to increase. If the pressure exceeds the battery box's tolerance, it may cause the battery box to explode or leak, posing a serious threat to the surrounding environment and personal safety. The working principle of pressure relief mechanisms such as explosion-proof valves is to establish a regulated ventilation channel inside the battery box. When the pressure inside the battery box increases, the valve will open to allow gas to be released from the battery box, thereby reducing the pressure. At present, after the battery has thermal runaway, the pressure relief mechanism has not been closed after opening, resulting in the risk of water ingress and secondary short circuit during battery consignment or repair, reducing the reliability of the battery.

[0046] In order to solve the above-mentioned technical problems, the present application provides a punch structure, which includes a fixed seat and a sliding member, the sliding member is arranged on the side of the fixed seat, a first inclined surface is arranged on the side of the sliding member facing the fixed seat, and a second inclined surface is arranged on the side of the fixed seat facing the sliding member; the inclination of the first inclined surface and the second inclined surface are the same, and the first inclined surface and the second inclined surface are both inclined toward the direction of the fixed seat from top to bottom; the sliding member is connected to the fixed seat by sliding along the first direction, and when it slides to a preset distance, the sliding member stops sliding relative to the fixed seat, and the first direction is the height direction of the punch structure.

[0047] In the above scheme, for the shell of the battery cell with the thickened upper end, the fixed seat and the sliding part are in a closed state during stamping, and there is no sliding between the fixed seat and the sliding part. The punch structure is stamped downward as a whole. After the stamping is completed, the punch structure needs to be separated from the shell. At this time, the restraint on the sliding part can be released, and the sliding part can slide downward relative to the fixed seat along the first direction. Since the first inclined surface and the second inclined surface are inclined from top to bottom in the direction of the fixed seat, the sliding part moves toward the middle during the sliding process until it stops when it slides to a preset distance. At this time, the punch structure is in a demolding state, and then demolding is performed. At this time, since the width of the punch structure becomes smaller, it interferes with the thickened part of the upper end of the shell, and can be demolded smoothly, and there will be no phenomenon such as burrs and barbs on the shell, thereby improving the success rate of demolding of the punch structure during the stamping of the battery cell shell.

[0048] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0049] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0050] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0051] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0052] Please refer to Figure 2 , Figure 2 An exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a battery box and a battery cell 20. In some embodiments, the battery box may include an upper cover 10 and a box body 30, the upper cover 10 and the box body 30 cover each other, and the upper cover 10 and the box body 30 jointly define a receiving cavity for accommodating the battery cell 20. The box body 30 may be a hollow structure with one end open, and the upper cover 10 may be a plate-like structure, and the upper cover 10 covers the open side of the box body 30, so that the upper cover 10 and the box body 30 jointly define a receiving cavity; the upper cover 10 and the box body 30 may also be hollow structures with one side open, and the open side of the upper cover 10 covers the open side of the box body 30. Of course, the battery box formed by the upper cover 10 and the box body 30 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0053] Figure 3 for Figure 2 The schematic diagram of the structure of the battery module 400 shown. In the battery 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box; of course, the battery 100 can also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in mixed connection, and the multiple battery modules are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box. The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0054] Each battery cell 20 may be a secondary battery cell or a primary battery cell, or a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0055] Please refer to Figure 4 , Figure 4 The schematic diagram of the exploded structure of the battery cell 20 provided in some embodiments of the present application. The battery cell 20 refers to the smallest unit that constitutes the battery. Figure 3 The battery cell 20 includes an end cover 21, a shell 22, an electrode assembly 23 and other functional components.

[0056] The end cap 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the shell 22 to match the shell 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 21 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 26 can be provided on the end cap 21. The electrode terminal 26 can be used to electrically connect to the electrode assembly 23 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 21 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 21, and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0057] The shell 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. The formed internal environment can be used to accommodate the electrode assembly 23, the electrolyte and other components. The shell 22 and the end cap 21 can be independent components. An opening can be set on the shell 22, and the internal environment of the battery cell 20 is formed by covering the opening with the end cap 21 at the opening. In some examples, the shell 22 is a hollow structure with an opening on one side, and the end cap 21 is one and covers the opening of the shell 22. In other examples, the shell 22 is a hollow structure with openings on both sides, and there are two end caps 21, and the two end caps 21 cover the two openings of the shell 22 respectively. Without limitation, the end cap 21 and the shell 22 can also be integrated. Specifically, the end cap 21 and the shell 22 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 22, the end cap 21 covers the shell 22. The shell 22 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 22 can be determined according to the specific shape and size of the electrode assembly 23. The shell 22 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0058] The electrode assembly 23 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 23 may be included in the housing 22. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 23, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive tab and the negative tab may be located together at one end of the main body or at both ends of the main body, respectively. During the charge and discharge process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs connect the electrode terminals 26 to form a current loop.

[0059] Figure 5 is a schematic structural diagram of a male mold structure in a closed state provided by some embodiments of the present application; Figure 6 It is a structural schematic diagram of the male mold structure provided in some embodiments of the present application in a demoulding state.

[0060] Please refer to Figure 5 and Figure 6In the first aspect, the embodiment of the present application provides a male mold structure 500, which includes a fixed seat 50 and a sliding member 60. The sliding member 60 is arranged on the side of the fixed seat 50, and a first inclined surface 61 is arranged on the side of the sliding member 60 facing the fixed seat 50, and a second inclined surface 51 is arranged on the side of the fixed seat 50 facing the sliding member 60; the inclination of the first inclined surface 61 and the second inclined surface 51 are the same, and the first inclined surface 61 and the second inclined surface 51 are inclined from top to bottom toward the direction of the fixed seat 50; the sliding member 60 is slidably connected to the fixed seat 50 along a first direction X, and when it slides to a preset distance, the sliding member 60 stops sliding relative to the fixed seat 50, and the first direction X is the height direction of the male mold structure 500.

[0061] Before stamping, the stamping machine fixes the sliding member 60 and the fixing seat 50 , and the sliding member 60 and the fixing seat 50 are assembled together in a closed state and form a rectangular parallelepiped to adapt to the rectangular parallelepiped housing 22 .

[0062] Since the first inclined surface 61 of the sliding member 60 is inclined from top to bottom toward the direction of the fixed seat 50, the cross section of the sliding member 60 gradually increases from top to bottom. Since the second inclined surface 51 of the fixed seat 50 is also inclined from top to bottom toward the direction of the fixed seat 50, the cross section of the fixed seat 50 gradually decreases from top to bottom. When the stamping is completed, the stamping machine releases the sliding member 60, and the sliding member 60 slides downward, gradually moving toward the direction of the fixed seat 50, that is, moving toward the middle of the punch structure 500, and the width of the punch structure 500 becomes smaller.

[0063] A slider 62 may be provided on the sliding member 60, and a groove 52 may be provided on the fixing seat 50, so that the sliding member 60 can slide relative to the fixing seat 50 by the cooperation between the slider 62 and the groove 52. Alternatively, a groove 52 may be provided on the sliding member 60, and a corresponding slider 62 may be provided on the fixing seat 50.

[0064] A preset gap can be set between the sliding member 60 and the fixing seat 50, and then during the sliding process, the gap is gradually reduced until the sliding member 60 and the fixing seat 50 are completely fitted together, thereby preventing the sliding member 60 from sliding further downward. Alternatively, a retractable pin can be set on either the sliding member 60 or the fixing seat 50, and a groove 52 can be set on the other. After sliding down a preset distance, the retractable pin pops out and extends into the groove 52, thereby preventing the sliding member 60 from sliding further downward.

[0065] In the above scheme, for the shell 22 of the battery cell 20 with the thickened upper end, the fixed seat 50 and the sliding member 60 are in a closed state during stamping, and there is no sliding between the fixed seat 50 and the sliding member 60. The convex mold structure 500 is stamped downward as a whole. After the stamping is completed, the convex mold structure 500 needs to be separated from the shell 22. At this time, the restraint on the sliding member 60 can be released, and the sliding member 60 can slide downward relative to the fixed seat 50 along the first direction X. Since the first inclined surface 61 and the second inclined surface 51 are inclined from top to bottom toward the direction of the fixed seat 50, during the sliding process, the sliding member 60 moves toward the middle until it stops when it slides to a preset distance, and then demolds. At this time, since the width of the convex mold structure 500 becomes smaller, it interferes with the thickened part of the upper end of the shell 22, and can be demolded smoothly, and there will be no phenomenon such as burrs and barbs on the shell 22, thereby improving the success rate of demolding of the convex mold structure 500 when stamping the shell 22 of the battery cell 20.

[0066] In some embodiments, the number of the sliding members 60 is two, and the two sliding members 60 are respectively disposed on opposite sides of the fixing seat 50 along the second direction Y, and the second direction Y is the width direction of the male mold structure 500 .

[0067] Sliders 60 are disposed on opposite sides of the fixing seat 50 along the second direction Y, and each slider 60 corresponds to a side with a larger area of ​​the housing 22 of the battery cell 20. During demoulding, the sliders 60 can be offset from the side with a larger area of ​​the housing 22 without interference.

[0068] In the above solution, during demoulding, the two opposite sides of the fixing seat 50 along the second direction Y will not interfere with the housing 22, further improving the success rate of the male mold demoulding.

[0069] In some embodiments, a sliding block 62 is disposed on one side of the sliding member 60 facing the fixing seat 50 , and the fixing seat 50 is provided with a groove 52 , and the sliding block 62 is slidably matched with the groove 52 .

[0070] The slider 62 is convexly disposed toward the fixing seat 50, and the groove 52 is concavely disposed toward the inside of the fixing seat 50. The groove 52 extends along the first direction X, and the slider 62 cooperates with the slide groove to provide a guide for the sliding member 60 when sliding downward.

[0071] In some embodiments, each sliding member 60 is provided with a plurality of sliders 62 arranged at intervals along the third direction Z, and the third direction Z is the length direction of the male mold structure 500. By providing a plurality of sliders 62 along the third direction Z, the stability of the sliding member 60 when sliding relative to the fixed seat 50 can be improved.

[0072] In some embodiments, grooves 52 are disposed on opposite sides of the fixing seat 50 along the second direction Y, and the grooves 52 on different sides are arranged in a staggered manner. The second direction Y is the width direction of the male mold structure 500 .

[0073] By staggering the grooves 52 along the second direction Y, the overall width of the male mold structure 500 can be reduced, which ensures to a certain extent that the male mold structure 500 will not interfere with the shell 22 of the battery cell 20 during demolding.

[0074] Figure 7 is a schematic diagram of the structure of a sliding member provided in some embodiments of the present application; Figure 8 It is a schematic diagram of the structure of a fixing base provided in some embodiments of the present application.

[0075] Please refer to Figure 7 and Figure 8 In some embodiments, the slider 62 includes a protrusion 621 and a butt joint 622, the protrusion 621 is convexly arranged relative to the butt joint 622 toward the direction of the fixed seat 50; the groove 52 includes a step portion 521 and a recessed portion 522, the recessed portion 522 is recessed relative to the step portion 521 toward the inside of the fixed seat 50, the protrusion 621 and the recessed portion 522 are slidably matched, the surface of the step portion 521 facing the slider 62 and the surface of the butt joint 622 facing the fixed seat 50 are both vertical surfaces; before the sliding member 60 slides relative to the fixed seat 50, there is a gap between the butt joint 622 and the step portion 521; when the sliding member 60 stops sliding relative to the fixed seat 50, the butt joint 622 contacts the step portion 521.

[0076] In the above scheme, the gap between the abutment portion 622 and the step portion 521 enables the sliding member 60 to slide smoothly relative to the fixed seat 50. As the sliding member 60 gradually moves toward the middle when sliding, the surface of the abutment portion 622 facing the fixed seat 50 contacts the surface of the step portion 521 facing the slider 62. Since they are both vertical surfaces, friction is generated between the abutment portion 622 and the step portion 521, which prevents the sliding member 60 from sliding further downward, and then the male mold structure 500 is lifted, thereby achieving smooth demoulding of the male mold structure 500.

[0077] In some embodiments, a third inclined surface 623 is provided on the side of the protrusion 621 facing the fixed seat 50, and a fourth inclined surface 523 is provided on the side of the recessed portion 522 facing the sliding member 60. The inclination of the third inclined surface 623 is the same as that of the fourth inclined surface 523, and the third inclined surface 623 and the fourth inclined surface 523 are both inclined from top to bottom in a direction away from the fixed seat 50.

[0078] The third inclined surface 623 of the protruding portion 621 is inclined in a direction opposite to the first inclined surface 61 of the sliding member 60 , and the fourth inclined surface 523 of the recessed portion 522 is inclined in a direction opposite to the second inclined surface 51 of the fixing seat 50 .

[0079] In the above scheme, through the cooperation of the third inclined surface 623 and the fourth inclined surface 523, when the abutting portion 622 contacts the step portion 521, the fourth inclined surface 523 of the recessed portion 522 has an upward supporting force on the third inclined surface 623 of the protruding portion 621, thereby further preventing the sliding member 60 from continuing to slide down, thereby improving the stability of the sliding member 60 relative to the fixed seat 50.

[0080] In some embodiments, each slider 62 includes two abutting portions 622 , and the two abutting portions 622 are respectively disposed on opposite sides of the protruding portion 621 along the third direction Z, where the third direction Z is the length direction of the male mold structure 500 .

[0081] That is to say, the slider 62 can be in a dovetail or a triangle shape, and by providing abutment portions 622 on both sides of the protrusion 621 along the third direction Z, the stability of the slider 60 when it stops sliding relative to the fixed seat 50 is further improved.

[0082] In some embodiments, the cross-sectional area of ​​the abutment portion 622 gradually increases in the direction from the slide 60 to the fixed seat 50. That is, the area of ​​the abutment portion 622 facing the fixed seat 50 is larger than the area of ​​the abutment portion 622 away from the fixed seat 50, and the slide 62 is dovetail-shaped.

[0083] In the above solution, the contact area between the abutting portion 622 and the step portion 521 is increased, thereby increasing the friction between the abutting portion 622 and the step portion 521 , further improving the stability of the sliding member 60 when it stops sliding relative to the fixing seat 50 .

[0084] In a second aspect, an embodiment of the present application further provides a mold, comprising a male mold structure 500 of any of the above-mentioned embodiments.

[0085] According to some embodiments of the present application, the present application provides a male mold structure 500, which includes a fixed seat 50 and a sliding member 60, wherein the sliding member 60 is arranged on the side of the fixed seat 50, and a first inclined surface 61 is arranged on the side of the sliding member 60 facing the fixed seat 50, and a second inclined surface 51 is arranged on the side of the fixed seat 50 facing the sliding member 60; the first inclined surface 61 and the second inclined surface 51 have the same inclination, and the first inclined surface 61 and the second inclined surface 51 are inclined from top to bottom toward the direction of the fixed seat 50; the sliding member 60 is slidably connected to the fixed seat 50 along a first direction X, and when sliding to a preset distance, the sliding member 60 stops sliding relative to the fixed seat 50, and the first direction X is the height direction of the male mold structure 500. A slider 62 is arranged on the side of the sliding member 60 facing the fixed seat 50, and the fixed seat 50 is provided with a groove 52, and the slider 62 is slidably matched with the groove 52.

[0086] 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 them; 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 by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A male mold structure, characterized in that: include: Fixed seat; A sliding member is arranged on the side of the fixed seat, and a first inclined surface is arranged on the side of the sliding member facing the fixed seat, and a second inclined surface is arranged on the side of the fixed seat facing the sliding member; the first inclined surface and the second inclined surface have the same inclination, and the first inclined surface and the second inclined surface are inclined toward the direction of the fixed seat from top to bottom; the sliding member is connected to the fixed seat by sliding along a first direction, and when it slides to a preset distance, the sliding member stops sliding relative to the fixed seat, and the first direction is the height direction of the punch structure.

2. The male mold structure according to claim 1, characterized in that: The number of the sliding members is two, and the two sliding members are respectively arranged on opposite sides of the fixing seat along the second direction, and the second direction is the width direction of the male mold structure.

3. The male mold structure according to claim 1, characterized in that: A sliding block is arranged on one side of the sliding member facing the fixing seat, and the fixing seat is provided with a groove, and the sliding block is slidably matched with the groove.

4. The male mold structure according to claim 3, characterized in that: Each of the sliding members is provided with a plurality of sliding blocks arranged at intervals along a third direction, and the third direction is the length direction of the male mold structure.

5. The male mold structure according to claim 3, characterized in that: The fixing seat is provided with the grooves on two opposite sides along the second direction, and the grooves on different sides are arranged alternately, and the second direction is the width direction of the male mold structure.

6. The male mold structure according to claim 3, characterized in that: The sliding block comprises a protruding portion and an abutting portion, wherein the protruding portion is arranged to protrude relative to the abutting portion in a direction toward the fixing seat; The groove includes a step portion and a recessed portion, the recessed portion is recessed toward the inside of the fixed seat relative to the step portion, the protrusion is slidably matched with the recessed portion, the surface of the step portion facing the slider and the surface of the abutment portion facing the fixed seat are both vertical surfaces; before the sliding member slides relative to the fixed seat, there is a gap between the abutment portion and the step portion; when the sliding member stops sliding relative to the fixed seat, the abutment portion contacts the step portion.

7. The male mold structure according to claim 6, characterized in that: The protrusion is provided with a third inclined surface on the side facing the fixed seat, and the recessed portion is provided with a fourth inclined surface on the side facing the sliding member. The third inclined surface and the fourth inclined surface have the same inclination, and both the third inclined surface and the fourth inclined surface are inclined from top to bottom in a direction away from the fixed seat.

8. The male mold structure according to claim 6, characterized in that: Each of the sliding blocks includes two abutting portions, and the two abutting portions are respectively arranged on opposite sides of the protruding portion along a third direction, and the third direction is the length direction of the male mold structure.

9. The male mold structure according to claim 6, characterized in that: In a direction from the sliding member to the fixing seat, the cross-sectional area of ​​the abutting portion gradually increases.

10. A mold, characterized in that: Comprising the male mold structure as described in any one of claims 1-9.

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