Hard-shell battery, battery module and electronic equipment

Abstract

The utility model provides a hard-shell battery, a battery module and electronic equipment. The hard-shell battery comprises a battery cell and a circuit board. And a pole in the battery cell extends out of the surface of the hard shell. And the pole is inserted into the connecting hole of the circuit board and is fixed and electrically connected with the inner wall of the connecting hole. The pole is inserted into the connecting hole of the circuit board, the space size of the battery head in the axis direction of the pole is shortened, and the space utilization rate of the battery head is improved. The length of the hard shell of the hard-shell battery can be increased, so that the capacity of the battery can be improved under the condition of the same battery length and the same top surface area, or the thickness of the battery can be reduced under the condition of the same battery capacity. The pole is inserted into the connecting hole of the circuit board, so that the pole and the inner wall of the connecting hole are welded once, the battery production and assembly process is simplified, the production efficiency and the battery reliability are improved, and the cost is saved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of hard shell batteries, and in particular to a hard shell battery, a battery module and an electronic device. Background Art

[0002] With the development of electronic devices such as terminal equipment, users have an increasing demand for the battery capacity of electronic devices. Compared with conventional soft-pack batteries, the current hard-shell battery packaging is simpler and has a smaller dimensional tolerance, which allows more available space inside the shell and higher battery capacity. How to make hard-shell batteries have a higher battery capacity is a problem that the industry needs to solve. Utility Model Content

[0003] The embodiments of the present application provide a hard shell battery, a battery module and an electronic device, so that the hard shell battery has a higher battery capacity.

[0004] The embodiment of the present application adopts the following technical solution:

[0005] In a first aspect, an embodiment of the present application provides a hard shell battery, comprising a battery cell and a circuit board. The battery cell comprises a hard shell and at least one pole, and the pole extends out of the surface of the hard shell. The circuit board has a connection hole corresponding to the pole, the connection hole extends along the thickness direction of the circuit board, the pole is at least partially inserted into the connection hole, and the pole and the inner wall of the connection hole are fixed and electrically connected.

[0006] In the hard shell battery provided in the embodiment of the present application, the pole in the battery cell extends out of the surface of the hard shell. The pole is inserted into the connection hole of the circuit board and is fixed and electrically connected to the inner wall of the connection hole. Compared with the hard shell battery 1 in the related art that connects the circuit board and the pole through a U-shaped adapter, the hard shell battery in this embodiment saves the thickness of the two arms of the U-shaped adapter. The pole is inserted into the connection hole of the circuit board, shortening the size of the battery head space in the direction of the pole axis, and improving the utilization rate of the battery head space. The hard shell length of the hard shell battery in this embodiment can be lengthened, which can increase the battery capacity under the same battery length and top surface area, or reduce the thickness of the battery under the same battery capacity. The pole is inserted into the connection hole of the circuit board, so that the pole and the inner wall of the connection hole are fixed (welded) once, saving one fixation (welding) and one bending, simplifying the battery production and assembly process, improving production efficiency and battery reliability, and saving costs.

[0007] In an optional implementation, the connection hole extends along the thickness direction of the circuit board. The axis of the connection hole can be parallel to the thickness direction of the circuit board, and a certain angle (such as ±10°) is allowed between the axis of the connection hole and the thickness direction of the circuit board.

[0008] In an optional implementation, the pole is at least partially inserted in the connection hole, the pole may be partially inserted in the connection hole, the pole may be completely inserted in the connection hole, or the pole may pass through the connection hole.

[0009] In an optional implementation, the inner wall of the connecting hole and the pole are fixed and electrically connected. The inner wall of the connecting hole may have a metal layer, and the metal layer is connected to the circuit board. The pole is fixed at the connecting hole by welding the pole and the metal layer, and the circuit board circuit, metal layer and pole are conductively connected.

[0010] In an optional implementation, the battery cell may be a lithium electron secondary battery cell, a sodium ion secondary battery cell, a potassium ion secondary battery cell, a magnesium ion secondary battery cell, a zinc ion secondary battery cell, an aluminum ion secondary battery cell, or the like.

[0011] In an optional implementation, the material of the hard shell may be stainless steel or the like.

[0012] In an optional implementation, the hard shell can be roughly rectangular, which is convenient for assembling the hard shell battery in an electronic device and occupies a small space. It is also convenient for arranging and electrically connecting multiple hard shell battery arrays to form a compact battery module.

[0013] In an optional implementation, multiple poles can be arranged on the same surface of the hard shell in the length direction, so as to make the size of the circuit board smaller and the head space size of the hard shell battery smaller. The length of the hard shell of the hard shell battery can be made longer.

[0014] In an optional implementation, the plurality of poles include a first pole and a second pole. The circuit board has a first connection hole and a second connection hole. The first pole is inserted into the first connection hole and fixed and electrically connected to the inner wall of the first connection hole, and the second pole is inserted into the second connection hole and fixed and electrically connected to the inner wall of the second connection hole. One of the first pole and the second pole can be used as a positive pole, and the other can be used as a negative pole.

[0015] In an optional implementation, the pole may be cylindrical, truncated cone, prism or truncated pyramid.

[0016] In an optional implementation, the connection hole may be a through hole or a blind hole. The shape of the connection hole may be circular, rectangular, or the like.

[0017] In an optional implementation, the circuit board includes a hard circuit board having a predetermined circuit, the connection hole is arranged on the hard circuit board, and the pole and the hard circuit board are fixed and electrically connected.

[0018] In an optional implementation, the circuit board includes a flexible-rigid combination board, the flexible-rigid combination board includes a flexible circuit board and a rigid circuit board, the flexible circuit board and the rigid circuit board both have predetermined circuits, and the flexible circuit board and the rigid circuit board are connected and conductive. The flexible circuit board has good bending properties, and the shape of the flexible circuit board is easy to adjust. The connection hole can be provided on the rigid circuit board, and the pole and the rigid circuit board are fixed and electrically connected.

[0019] In an optional implementation, the circuit board includes a flexible circuit board and a reinforcing sheet, the reinforcing sheet is stacked on the flexible circuit board, the flexible circuit board has a predetermined circuit, the connecting hole is arranged on the flexible circuit board, and the pole and the flexible circuit board are fixed and electrically connected.

[0020] In an optional implementation, an electronic device is provided on the side of the circuit board facing the hard shell, a gap is formed between the circuit board and the hard shell, and the electronic device is located in the gap. The circuit board with the electronic device installed can be used to protect the battery cell so that the battery cell can work normally in the charging state or the discharging state. The welding between the pole and the circuit board is a stable connection, and the electronic device is located between the circuit board and the hard shell, which forms a reliable protection for the electronic device.

[0021] In an optional implementation, the circuit board may not be provided with electronic devices, the circuit board is electrically connected to the pole, the circuit board has a current-passing function, and the circuit board may be connected to other circuit boards for conduction.

[0022] In an optional implementation, the side of the circuit board facing away from the hard shell has an insulating layer. The side of the circuit board facing away from the hard shell may not be provided with electronic devices and may be configured as an insulating layer, which can play a protective and supporting role.

[0023] In an optional implementation, the pole has a limiting portion, the connection hole has a port facing the hard shell, the edge of the port is abutted against the limiting portion, and the circuit board and the hard shell are spaced apart. The pole and the connection hole are aligned and the pole is inserted into the connection hole. When the limiting portion abuts against the edge of the port of the connection hole, the circuit board is limited on the pole, and the circuit board and the hard shell are limited to a predetermined distance.

[0024] In an optional implementation, the pole is in a truncated cone or prism shape, and has a large end and a small end, the large end is used as a limiter and connected to the hard shell, the large end is located outside the connection hole, and the small end is located inside the connection hole, limiting the distance between the circuit board and the hard shell battery cell.

[0025] In an optional implementation, the limiting portion may be a protrusion on the pole, the protrusion will not enter the connection hole, and the protrusion is disposed against the edge of the port of the connection hole to limit the distance between the circuit board and the hard shell battery cell.

[0026] In an optional implementation, an insulating portion is further included, and the insulating portion covers the exposed area of ​​the pole. The exposed area of ​​the pole is wrapped by the insulating portion to insulate the pole.

[0027] In an optional implementation, the insulating part is connected to the hard shell, and the insulating part is connected to the circuit board, so that the circuit board can be stably and reliably fixed on the battery cell.

[0028] In an optional implementation, the insulating part may include at least one of insulating tape and an injection molding part.

[0029] In an optional implementation, the insulating portion includes insulating tape, a portion of which is wrapped around the side of the circuit board facing away from the hard shell, and another portion of which is wrapped around the outer circumference of the pole. The circuit board and the pole are insulated from the outside, which can shorten the head space size of the battery. Furthermore, using insulating tape to insulate the battery can simplify the battery manufacturing process and improve the battery production efficiency.

[0030] In an optional implementation, the insulating part can be an insulating tape, which is affixed to the side of the circuit board away from the hard shell and to the surface of the hard shell close to the circuit board, thereby achieving insulation protection for the circuit board and the pole, and enabling the circuit board to be reliably fixed to the head of the hard shell.

[0031] In an optional implementation, the insulating part includes an injection molded part, a part of which is coated on the side of the circuit board facing away from the hard shell; another part of the injection molded part is filled between the circuit board and the hard shell and coated on the outer peripheral surface of the pole, thereby achieving insulation protection for the circuit board and the pole.

[0032] In an optional implementation, the insulating part includes an injection molding part and an insulating adhesive tape, the injection molding part is filled between the circuit board and the hard shell, and is coated on the outer peripheral surface of the pole; the insulating adhesive tape is at least coated on the side of the circuit board facing away from the hard shell, so as to achieve insulation protection for the circuit board and the pole.

[0033] In an optional implementation, the hard shell has a step surface, the step surface includes a first transverse surface, a vertical surface, and a second transverse surface connected in sequence, and the planes where the first transverse surface and the second transverse surface are located are spaced apart; the plurality of poles include a first pole and a second pole, the first pole is arranged on one of the three walls of the first transverse surface, the vertical surface, and the second transverse surface, and the second pole is arranged on the other of the three walls of the first transverse surface, the vertical surface, and the second transverse surface. Under the condition that the internal space of the electronic device is small, the hard shell battery has a large battery capacity, and the predetermined device can be arranged near the battery, thereby improving the internal space utilization of the electronic device.

[0034] In an optional implementation, the end face of the first pole away from the first lateral face and the end face of the second pole away from the second lateral face are not coplanar; the circuit board is a flexible-rigid combination board, and the flexible-rigid combination board includes a first hard board portion, a flexible board portion, and a second hard board portion connected in sequence; the first hard board portion has a first connecting hole, and the first pole and the inner wall of the first connecting hole are fixed and electrically connected; the second hard board portion has a second connecting hole, and the second pole and the inner wall of the second connecting hole are fixed and electrically connected.

[0035] In an optional implementation, the first pole is arranged on the first transverse plane, and the second pole is arranged on the second transverse plane. The circuit board can be a flexible and rigid board, and the first pole and the second pole are respectively fixed and electrically connected to the first rigid board part and the second rigid board part of the flexible and rigid board.

[0036] In an optional implementation, the first pole is arranged on the first transverse plane, and the second pole is arranged on the vertical plane. The circuit board can be a flexible and rigid board, and the first pole and the second pole are respectively fixed and electrically connected to the first rigid board part and the second rigid board part of the flexible and rigid board.

[0037] In an optional implementation, the first pole is arranged on the vertical plane, and the second pole is arranged on the second horizontal plane. The circuit board can be a flexible and rigid board, and the first pole and the second pole are respectively fixed and electrically connected to the first rigid board part and the second rigid board part of the flexible and rigid board.

[0038] In an optional implementation, the end face of the first pole away from the first transverse surface and the end face of the second pole away from the second transverse surface are coplanar; the circuit board is a hard circuit board, the first pole is arranged on the first transverse surface, and the second pole is arranged on the second transverse surface.

[0039] In an optional implementation, the hard shell has a first surface and a second surface with different orientations, and the multiple poles include a first pole and a second pole, the first pole is arranged on the first surface, and the second pole is arranged on the second surface; the circuit board is a flexible and rigid combination board, and the flexible and rigid combination board includes a first hard board part, a flexible board part and a second hard board part connected in sequence; the first hard board part has a first connecting hole, and the first pole and the inner wall of the first connecting hole are fixed and electrically connected; the second hard board part has a second connecting hole, and the second pole and the inner wall of the second connecting hole are fixed and electrically connected.

[0040] In an optional implementation, a transfer piece is further included, one end of the transfer piece is fixed and electrically connected to the hard shell, and the other end of the transfer piece is fixed and electrically connected to the circuit board. The hard shell can be used as one of the electrodes of the battery cell, and the hard shell and the circuit board are electrically connected through the transfer piece.

[0041] In an optional implementation, the hard shell is provided with a pole and a transition piece, the hard shell and the pole are insulated from each other, and the transition piece and the hard shell are conductively connected. The hard shell can be used as a negative pole, and the pole can be used as a positive pole.

[0042] In a second aspect, an embodiment of the present application provides a battery module, comprising a plurality of the above-mentioned hard shell batteries, wherein the plurality of hard shell battery arrays are arranged and electrically connected. The plurality of hard shell battery arrays are arranged and combined in series, parallel or series-parallel to form a battery module with predetermined performance. The battery module can be used as a power battery for new energy vehicles and other equipment.

[0043] In a third aspect, an embodiment of the present application provides an electronic device, comprising the hard shell battery or the battery module. The hard shell battery or the battery module is used to supply power to other electronic devices of the electronic device.

[0044] In an optional implementation, the hard shell battery may include a battery cell and a circuit board, and the battery cell and the circuit board are electrically connected. The electronic device also includes a mainboard, and the circuit board and the mainboard are electrically connected, so that the hard shell battery can supply power to the mainboard and other electronic devices of the electronic device, the mainboard can control the hard shell battery, and the signal of the hard shell battery can be fed back to the mainboard.

[0045] In an optional implementation, the electronic device is a mobile phone, and the mobile phone includes a display screen, a middle frame, and a back cover. The display screen and the back cover are respectively arranged on opposite sides of the middle frame. The middle frame has a battery compartment, and the hard shell battery can be fixed in the battery compartment by means of adhesive, buckles, etc., and the back cover is arranged on the hard shell battery. A main board is arranged on the middle frame, and a circuit board of the hard shell battery is electrically connected to the main board. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1A , Figure 1B , Figure 1C They are schematic diagrams of the structure in which the pole and the circuit board in the hard-shell battery of the related art are connected by an L-shaped adapter, the U-shaped adapter is clamped on the edge of the circuit board, and the head of the hard-shell battery is injection molded;

[0047] Figure 2 A schematic diagram of the structure of a hard shell battery of another related technology;

[0048] Figure 3 A three-dimensional exploded view of a hard shell battery provided in an embodiment of the present application;

[0049] Figure 4 for Figure 3 A three-dimensional assembly diagram of a hard-shell battery;

[0050] Figure 5 An exploded schematic diagram of a hard shell battery provided in another embodiment of the present application;

[0051] Figure 6 for Figure 5 Schematic diagram of the assembly of the hard shell battery;

[0052] Figures 7 to 19 A schematic diagram of the structure of a hard shell battery provided in different embodiments of the present application;

[0053] Fig. 20 A schematic diagram of the structure of a battery module provided in an embodiment of the present application;

[0054] Fig.21 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Although the description of the present application will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to the implementation mode. On the contrary, the purpose of combining the implementation mode as an application introduction is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0056] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0057] It should be understood that in the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component 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.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0059] In the embodiments of the present application, "and / or" is only a description of the association relationship of the 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 article generally indicates that the associated objects before and after are in an "or" relationship.

[0060] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0061] Batteries can be divided into soft-pack batteries and hard-shell batteries in terms of packaging methods. The shell of a soft-pack battery can be made of polymer materials such as aluminum-plastic film. The shell of a hard-shell battery can be made of stainless steel. Compared with a soft-pack battery that is hot-pressed and plastic-sealed, the shell of a hard-shell battery is laser welded, which does not require the top and side seals of a soft-pack battery. In addition, the dimensional tolerance of a hard-shell battery is smaller, and the shell thickness of a hard-shell battery is thinner when making a thick battery. Under the same volume, the internal available space of the hard-shell battery shell is larger, and the battery capacity is higher.

[0062] The tabs of the battery cell of the soft-pack battery can be in the form of sheets. During the production process of the soft-pack battery, the tabs of the battery cell and the circuit board can be connected and conducted through adapters (such as nickel sheets), which require surface mounting technology (SMT) equipment and bending equipment. On the SMT equipment, one end of the L-shaped adapter is welded to the tab, and the other end of the L-shaped adapter is welded to the pad of the circuit board. On the bending equipment, the L-shaped adapter is bent into a U shape, so that the large surface of the circuit board and the top surface of the battery cell face each other or are perpendicular to each other, thereby achieving the fixation and conduction of the tabs, adapter, and circuit board.

[0063] See also Figure 1A , Figure 1BThe cell tab of the hard-shell battery 1 can be in the form of a pole 2, and the pole 2 is arranged on the hard shell 3. When manufacturing the hard-shell battery 1, technicians usually refer to and use the process and processing equipment of the soft-pack battery to connect the pole 2 in the hard-shell battery 1 and the circuit board 5 through the adapter 4. Figure 1A As shown, one arm 4a of the L-shaped adapter plate 4 is welded to the pole 2, and the other arm 4b of the L-shaped adapter plate 4 is welded to the pad of the circuit board 5 on the SMT device. Figure 1B As shown, the L-shaped adapter plate 4 is bent into a U-shape on the bending device, so that the large surface of the circuit board 5 and the top surface of the hard shell 3 face each other, and the U-shaped adapter plate 4 can be clamped on the edge of the circuit board 5 to achieve the fixation and conduction of the pole 2, the adapter plate 4, and the circuit board 5. In addition, as Figure 2 As shown, the U-shaped adapter sheet 4 can also be located between the circuit board 5 and the top surface of the hard shell 3 .

[0064] When manufacturing the hard shell battery 1, two welding steps and one bending step are required, and the production process and assembly process are relatively complicated. Figure 1C As shown, the height L1 of the pole 2, the thickness L2 of the two arms (4a, 4b) of the U-shaped adapter 4, and the thickness L3 of the circuit board 5 all occupy the battery head space, making the battery length L longer, the battery head space utilization rate lower, and the battery capacity lower.

[0065] The pole 2 and the circuit board 5 in the hard shell battery 1 are welded together through the adapter 4. During the movement, assembly, and disassembly of the hard shell battery 1, the adapter 4 is easy to move and damage the welding position, or the electronic device 6 on the circuit board 5 is easy to be damaged, causing safety problems for the hard shell battery 1. In order to make the circuit board 5 stable and reliable, a rubber frame or an injection molding part 7 can be set at the head of the hard shell 3 to fix the circuit board 5 on the hard shell 3, which will occupy the head space of the hard shell battery 1, have more processes, and higher costs.

[0066] In order to facilitate the description of the orientation of the hard case battery 100 in the following embodiments, the length direction of the hard case battery 100 is defined as the Y direction, the width direction is the X direction, and the thickness direction is the Z direction. The X direction, the Y direction, and the Z direction may be perpendicular to each other.

[0067] See also Figures 3 to 6 The embodiment of the present application provides a hard shell battery 100, including a battery cell 110 and a circuit board 121. The battery cell 110 includes a hard shell 111 and at least one pole 112, and the pole 112 extends out of the surface of the hard shell 111. The circuit board 121 has a connection hole 1211 corresponding to the pole 112, and the connection hole 1211 extends along the thickness direction of the circuit board 121. The pole 112 is at least partially inserted into the connection hole 1211, and the pole 112 and the inner wall of the connection hole 1211 are fixed and electrically connected.

[0068] The circuit board 121 generally has a length direction, a width direction, and a thickness direction, and the thickness of the circuit board 121 is smaller than the length and the width. Figures 3 to 6 In the illustrated embodiment, the length direction, width direction and thickness direction of the circuit board 121 are respectively the X direction, the Z direction and the Y direction. In addition, when the circuit board 121 includes multiple components, the multiple components have their own thickness directions.

[0069] The connecting hole 1211 extends along the thickness direction of the circuit board 121. The axis 1211a of the connecting hole 1211 can be parallel to the thickness direction of the circuit board 121, or a certain angle (such as ±10°) is allowed between the axis 1211a of the connecting hole 1211 and the thickness direction of the circuit board 121.

[0070] The connection holes 1211 of the circuit board 121 and the poles 112 can be arranged in a one-to-one correspondence. The poles 112 are at least partially inserted into the connection holes 1211, and the poles 112 can be partially inserted into the connection holes 1211 (such as Figure 6 As shown), the pole 112 may be completely inserted into the connection hole 1211, or the pole 112 may pass through the connection hole 1211 (as shown Figure 7 shown).

[0071] The inner wall of the connection hole 1211 and the pole 112 are fixed and electrically connected. The inner wall of the connection hole 1211 may have a metal layer (e.g., copper plating), and the metal layer is connected to the circuit of the circuit board 121. The pole 112 is fixed to the connection hole 1211 by welding the pole 112 and the metal layer (e.g., laser spot welding), and the circuit of the circuit board 121, the metal layer and the pole 112 are conductively connected. In addition, the inner wall of the connection hole 1211 and the pole 112 may also be fixed and electrically connected by other means.

[0072] In the hard shell battery 100 provided in the embodiment of the present application, the pole 112 in the battery cell 110 extends out of the surface of the hard shell 111. The pole 112 is inserted into the connection hole 1211 of the circuit board 121 and is fixed and electrically connected to the inner wall of the connection hole 1211. Figure 1C , Figure 2The related art shown is a hard shell battery 1 that connects the circuit board 121 and the pole 2 through a U-shaped adapter 4. The hard shell battery 100 of this embodiment saves the thickness L2 of the two arms (4a, 4b) of the U-shaped adapter 4. The pole 112 is inserted into the connection hole 1211 of the circuit board 121, shortening the battery head space size (Y direction size) in the direction of the pole axis 112a, and improving the battery head space utilization rate. The length L10 of the hard shell 111 of the hard shell battery 100 of this embodiment (the size of the hard shell 111 in the Y direction) can be made longer, and the battery capacity can be increased under the same battery length and top surface 111a area, or the battery thickness L11 (Z direction size) can be reduced under the same battery capacity. The pole 112 is inserted into the connection hole 1211 of the circuit board 121, so that the pole 112 and the inner wall of the connection hole 1211 are fixed (welded) once, saving one fixation (welding) and one bending, simplifying the battery production and assembly process, improving production efficiency and battery reliability, and saving costs.

[0073] The battery top surface 111 a is a surface on the hard shell 111 that is perpendicular to the length direction (Y direction) of the battery.

[0074] For example, compared to Figure 1C , Figure 2 The related technology shown in the figure connects the circuit board 5 and the hard shell battery 1 of the pole 2 through the U-shaped adapter plate 4. The head space size (Y direction size) of the hard shell battery 100 of this embodiment can be shortened. Under the same battery length and top surface 111a area, the length L10 of the hard shell 111 of the hard shell battery 100 of this embodiment (the size of the hard shell 111 in the Y direction) can be extended by more than 0.5%, and the battery capacity can be increased by more than 0.5%.

[0075] When the battery cell 110 is provided, the battery cell 110 may be a lithium electron secondary battery cell, a sodium ion secondary battery cell, a potassium ion secondary battery cell, a magnesium ion secondary battery cell, a zinc ion secondary battery cell, an aluminum ion secondary battery cell, or the like.

[0076] When the hard shell 111 is provided, the material of the hard shell 111 may be stainless steel or the like. The hard shell 111 may be roughly rectangular, which facilitates the assembly of the hard shell battery 100 in the electronic device 1000 and occupies a small space. It is also convenient for multiple hard shell batteries 100 to be arranged in an array and electrically connected to form a compact battery module. In addition, the hard shell 111 may also be provided in other shapes.

[0077] When setting pole 112, refer to Figures 3 to 6, multiple poles 112 can be arranged on the same surface of the hard shell 111 in the length direction (i.e., the Y direction). This makes it easy to make the size of the circuit board 121 smaller, so that the head space size (Y direction size) of the hard shell battery 100 is smaller. The length L10 of the hard shell 111 of the hard shell battery 100 can be made longer, which can increase the battery capacity under the same battery length and top surface 111a area, or reduce the battery thickness (Z direction size) under the same battery capacity.

[0078] Exemplarily, the plurality of poles 112 include a first pole 112b and a second pole 112c. The circuit board 121 has a first connection hole 1211e and a second connection hole 1211f. The first pole 112b is inserted into the first connection hole 1211e and fixed and electrically connected to the inner wall of the first connection hole 1211e, and the second pole 112c is inserted into the second connection hole 1211f and fixed and electrically connected to the inner wall of the second connection hole 1211f. One of the first pole 112b and the second pole 112c can be used as a positive pole, and the other can be used as a negative pole.

[0079] When setting the shape of the pole 112 , the pole 112 may be cylindrical, truncated cone, prism or prism-shaped, which can be set as required.

[0080] When the connection hole 1211 is provided, the connection hole 1211 may be a via hole 1211b (eg Figure 5 , Figure 6 , Figure 7 As shown), it can also be a blind hole 1211c (as shown Figure 8 As shown in FIG. 1 ). The through hole 1211b is a hole that passes through the circuit board 121 in the thickness direction of the circuit board 121. The blind hole 1211c is a hole that does not pass through the circuit board 121. The shape of the connection hole 1211 can be circular, rectangular, etc. The pole 112 is inserted into the connection hole 1211, so that the pole 112 and the inner wall of the connection hole 1211 are fixed and electrically connected, and the size of the battery head in the direction of the pole axis 112a is reduced.

[0081] There are multiple optional implementations when setting the circuit board 121. Three implementations are given below as examples.

[0082] The first implementation of the circuit board 121: Figures 3 to 6 The circuit board 121 includes a hard circuit board 121a, that is, a printed circuit board (PCB). The hard circuit board 121a has a predetermined circuit, the connection hole 1211 is provided on the hard circuit board 121a, and the pole 112 and the hard circuit board 121a are fixed and electrically connected.

[0083] Second implementation of the circuit board 121: Fig.14The circuit board 121 includes a flexible-rigid combination board, which includes a flexible printed circuit (FPC) and a rigid circuit board. Both the flexible printed circuit board and the rigid circuit board have predetermined circuits, and the flexible printed circuit board and the rigid circuit board are connected and conductive. The flexible circuit board has good bending properties, which facilitates the adjustment of the shape of the flexible circuit board. The connecting hole 1211 can be provided on the rigid circuit board, and the pole 112 and the rigid circuit board are fixed and electrically connected. The rigid circuit board can be a first rigid board portion 121b1 and a second rigid board portion 121b3, and the flexible circuit board can be a flexible board portion 121b2, and the first rigid board portion 121b1, the flexible board portion 121b2 and the second rigid board portion 121b3 are connected in sequence.

[0084] The third implementation of the circuit board 121: Fig. 9 The circuit board 121 includes a flexible circuit board 121c and a reinforcing sheet 121d, wherein the reinforcing sheet 121d is stacked on the flexible circuit board 121c. The flexible circuit board 121c has a predetermined circuit, the connecting hole 1211 is provided on the flexible circuit board 121c, and the pole 112 and the flexible circuit board 121c are fixed and electrically connected.

[0085] In some embodiments, see Figure 4 , Figure 6 An electronic device 122 is disposed on a side of the circuit board 121 facing the hard shell 111 , a gap 123 is formed between the circuit board 121 and the hard shell 111 , and the electronic device 122 is located in the gap 123 .

[0086] The circuit board 121 with the electronic device 122 installed thereon can form a circuit board assembly 120, and the circuit board assembly 120 can be used to protect the battery cell 110 so that the battery cell 110 can work normally in a charging state or a discharging state. For example, the circuit board 121 can provide overcharge protection, over-discharge protection, over-current protection, and over-temperature protection to the battery cell 110. The electronic device 122 can be a battery encryption chip, a current sensing resistor, a thermistor, a conventional resistor required for a peripheral circuit, a capacitor device, and the like.

[0087] The electronic device 122 is arranged on the side of the circuit board 121 facing the hard shell 111, making full use of the space between the circuit board 121 and the battery cell 110, shortening the battery head space size (Y direction size) in the direction of the pole axis 112a. The welding between the pole 112 and the circuit board 121 is a stable connection, and the electronic device 122 is located between the circuit board 121 and the hard shell 111, which forms a reliable protection for these electronic devices 122, reducing the extrusion and collision damage of the electronic device 122 and the battery compartment 401 during the assembly, disassembly and use of the battery.

[0088] In other embodiments, the circuit board 121 may not be provided with the electronic device 122, the circuit board 121 is electrically connected to the pole 112, and the circuit board 121 has a current-passing function. The circuit board 121 may be connected to other circuit boards for conduction.

[0089] When setting up the circuit board 121, refer to Figure 4 , Figure 6 The circuit board 121 has an insulating layer 1212 on a side facing away from the hard shell 111 .

[0090] The side of the circuit board 121 facing away from the hard shell 111 may not be provided with the electronic device 122 and may be configured as an insulating layer 1212, which can play a protective and supporting role, without the need for Figure 1C , Figure 2 The hard shell battery 1 of the related art shown uses a plastic frame or an injection molding part 7 to fix the circuit board 5 and the head of the battery cell 3. The insulating layer 1212 can be formed by applying insulating oil (such as green oil) on the surface of the circuit board 121 and forming the insulating layer 1212 after the insulating oil is cured.

[0091] In order to maintain a predetermined distance between the circuit board 121 and the hard shell 111, in some embodiments, refer to Fig.10 The pole 112 has a limiting portion 1121 , the connecting hole 1211 has a port 1211 d facing the hard shell 111 , the edge of the port 1211 d is abutted against the limiting portion 1121 , and the circuit board 121 and the hard shell 111 are spaced apart.

[0092] When assembling the circuit board 121 on the pole 112, align the pole 112 and the connecting hole 1211 and insert the pole 112 into the connecting hole 1211. When the limiting portion 1121 and the edge of the port 1211d of the connecting hole 1211 abut against each other, the circuit board 121 is limited on the pole 112, so that the circuit board 121 cannot continue to approach the hard shell 111, and the circuit board 121 and the hard shell 111 are limited to a predetermined distance, thereby reducing the extrusion damage of the electronic components 122 on the circuit board 121 and the hard shell 111 during the assembly process, and facilitating the subsequent welding of the pole 112 and the inner wall of the connecting hole 1211.

[0093] There are multiple optional implementations when setting the limiting portion 1121. Two implementations are given as examples below.

[0094] The first implementation method of the limiting portion 1121 is as follows: the pole 112 is in the shape of a truncated cone or a prism, and the pole 112 has a large end 1122 and a small end 1123. The large end 1122 serves as the limiting portion 1121 and is connected to the hard shell 111. The large end 1122 is located outside the connecting hole 1211, and the small end 1123 is located inside the connecting hole 1211.

[0095] The pole 112 is configured to have a large end 1122 and a small end 1123, the cross-sectional area of ​​the large end 1122 is larger than the cross-sectional area of ​​the small end 1123, and in the process of inserting the pole 112 into the connection hole 1211, the small end 1123 can extend into the connection hole 1211, and the outer peripheral surface of the large end 1122 and the edge of the port 1211d of the connection hole 1211 are abutted and matched, thereby limiting the spacing between the circuit board 121 and the hard shell battery cell 110. The cross-sectional area of ​​the large end 1122 and the cross-sectional area of ​​the small end 1123 are the cross-sectional areas of the large end 1122 and the small end 1123 in the direction perpendicular to the axis 112a of the pole 112, respectively.

[0096] The second implementation of the limiting portion 1121: The limiting portion 1121 can be a protrusion on the pole 112, which will not enter the connection hole 1211, and the protrusion is set against the edge of the port 1211d of the connection hole 1211, thereby limiting the distance between the circuit board 121 and the hard shell battery cell 110. The protrusion can be a bump or other forms.

[0097] In order to reduce the risk of short circuit caused by contact with other conductive devices when the pole 112 is exposed, in some embodiments, refer to Figures 11 to 13 , and further includes an insulating portion 130, the insulating portion 130 covers the exposed area of ​​the pole 112. The exposed area of ​​the pole 112 may include the end surface of the pole 112 away from the hard shell 111, and the outer peripheral surface of the pole 112 not connected to the circuit board 121.

[0098] The exposed area of ​​the pole 112 is wrapped by the insulating part 130, which insulates the pole 112, reduces the risk of short circuit caused by contact between the pole 112 and other conductive devices, and improves the reliability of the battery. When the hard shell battery 100 is installed in the battery compartment of an electronic device, the setting of the insulating part 130 reduces the risk of contact and conduction between the pole 112 and the surrounding metal structure of the battery compartment.

[0099] In order to stably connect the circuit board 121 to the battery cell 110, in some embodiments, refer to Figures 11 to 13 The insulating portion 130 is connected to the hard shell 111 , and the insulating portion 130 is connected to the circuit board 121 .

[0100] The insulating part 130 is connected to the hard shell 111 and the circuit board 121 respectively, so that the circuit board 121 can be stably and reliably fixed on the battery cell 110. During the movement, assembly, and disassembly of the hard shell battery 100, the circuit board 121 and the pole 112 are reliably connected, and the electronic device 122 on the circuit board 121 is difficult to be damaged, thereby improving the safety of the hard shell battery 100.

[0101] When setting the insulating portion 130, refer to Figures 11 to 13The insulating part 130 may include at least one of an insulating tape 131 and an injection molding part 132. Fig.11 As shown, the insulating tape 131 is attached to a predetermined position by bonding to form the insulating portion 130. This can simplify the battery manufacturing process and improve the battery production efficiency. Fig.12 As shown, the injection molding part 132 is to fill the molten material at a predetermined position by injection molding, and after the molten material is cooled and solidified, the insulating part 130 is formed. The specific method of the above insulating part 130 is set as needed.

[0102] There are multiple optional implementations when providing the insulating portion 130. Three implementations are given below as examples.

[0103] The first implementation method of the insulating portion 130: Fig.11 The insulating portion 130 includes an insulating tape 131 , a portion of the insulating tape 131 is wrapped around a side of the circuit board 121 facing away from the hard shell 111 , and another portion of the insulating tape 131 is wrapped around an outer peripheral surface of the pole 112 .

[0104] The insulating tape 131 is coated on the outer peripheral surface of the pole 112 , and may be coated on the area between the circuit board 121 and the hard shell 111 , so that the pole 112 is insulated and isolated from the outside by the insulating tape 131 .

[0105] The insulating tape 131 is used to cover the side of the circuit board 121 away from the hard shell 111 and cover the outer peripheral surface of the pole 112, so that the circuit board 121 and the pole 112 are insulated from the outside, without the need for Figure 1C , Figure 2 The hard shell battery 1 of the related art shown uses a rubber frame or injection molding part 7 to fix the circuit board 5 and the battery cell 3, which can shorten the head space size of the battery (dimension in the Y direction) and has a low cost. The length of the hard shell 111 of the hard shell battery 100 (dimension of the hard shell 111 in the Y direction) can be made longer, which can increase the battery capacity under the same battery length and top surface area, or reduce the thickness of the battery under the same battery capacity. The circuit board 121 and the battery cell 110 are easy to disassemble, which is convenient for device maintenance and reuse.

[0106] It should be noted that covering means being in direct contact with the object to be covered and being located above the object to be covered; or, covering means not being in direct contact with the object to be covered and being located above the object to be covered, and only needs to play a shielding role.

[0107] For example, see Fig.11The insulating portion 130 may be an insulating tape 131, which is attached to a side of the circuit board 121 away from the hard shell 111, and to a surface of the hard shell 111 close to the circuit board 121, thereby achieving insulation protection for the circuit board 121 and the pole 112, and enabling the circuit board 121 to be reliably fixed to the head of the hard shell 111.

[0108] Compared to Figure 1C , Figure 2 The circuit board 5 and the head of the battery cell 3 of the hard shell battery 1 of the related art shown are fixed by a plastic frame or an injection molding part 7. The head space size (Y direction size) of the hard shell battery 100 of this embodiment can be further shortened. Under the same battery length and top surface area, the length of the hard shell 111 of the hard shell battery 100 of this embodiment can be further increased by more than 0.5%, and the battery capacity can be further increased by more than 0.5%. The top surface 111a of the battery is a surface perpendicular to the length direction of the battery.

[0109] Second implementation method of the insulating portion 130: Fig.12 The insulating portion 130 includes an injection molded portion 132 , a portion of the injection molded portion 132 is coated on the side of the circuit board 121 facing away from the hard shell 111 ; another portion of the injection molded portion 132 is filled between the circuit board 121 and the hard shell 111 , and coated on the outer peripheral surface of the pole 112 .

[0110] The injection molding part 132 is used to cover the side of the circuit board 121 away from the hard shell 111 and the outer peripheral surface of the pole 112, so as to achieve insulation protection for the circuit board 121 and the pole 112.

[0111] The third implementation method of the insulating portion 130: Fig.13 The insulating part 130 includes an injection molding part 132 and an insulating tape 131. The injection molding part 132 is filled between the circuit board 121 and the hard shell 111, and is coated on the outer peripheral surface of the pole 112; the insulating tape 131 is at least coated on the side of the circuit board 121 facing away from the hard shell 111.

[0112] The injection molding part 132 is used to cover the outer peripheral surface of the pole 112 , and the insulating tape 131 is used to cover the circuit board 121 , so that insulation protection of the circuit board 121 and the pole 112 can be achieved.

[0113] In order to facilitate the arrangement of predetermined components near the battery and improve the internal space utilization of the electronic device 1000, in some embodiments, refer to Figures 14 to 17The hard shell 111 has a step surface 111c, and the step surface 111c includes a first transverse surface 111d, a vertical surface 111e and a second transverse surface 111f connected in sequence, and the first transverse surface 111d and the second transverse surface 111f are arranged at an interval in the plane where the first transverse surface 111d and the second transverse surface 111f are located; the multiple poles 112 include a first pole 112b and a second pole 112c, and the first pole 112b is arranged on one of the three walls of the first transverse surface 111d, the vertical surface 111e and the second transverse surface 111f, and the second pole 112c is arranged on the other wall of the three walls of the first transverse surface 111d, the vertical surface 111e and the second transverse surface 111f.

[0114] The hard shell 111 is set to be a special shape, and one side of the hard shell 111 is set to a step surface 111c, so that the first pole 112b and the second pole 112c are respectively set at different positions of the step surface 111c. An escape area 111g can be formed on the step surface 111c, and a camera or other predetermined devices can be set in the escape area 111g. Under the condition that the internal space of the electronic device 1000 is small, the hard shell battery 100 has a large battery capacity, and the predetermined devices can be arranged near the battery, thereby improving the internal space utilization of the electronic device 1000.

[0115] The hard shell battery 100 also has a bottom surface 111b opposite to the step surface 111c, and the distance between the first transverse surface 111d and the bottom surface 111b can be smaller than the distance between the second transverse surface 111f and the bottom surface 111b, or the distance between the first transverse surface 111d and the bottom surface 111b can be greater than the distance between the second transverse surface 111f and the bottom surface 111b.

[0116] In order to connect two poles with non-coplanar end faces to the circuit board 121, in some embodiments, see Fig.14 , the end face of the first pole 112b away from the first lateral surface 111d and the end face of the second pole 112c away from the second lateral surface 111f are not coplanar; the circuit board 121 is a flexible-rigid combination board 121b, and the flexible-rigid combination board 121b includes a first hard board portion 121b1, a flexible board portion 121b2 and a second hard board portion 121b3 connected in sequence; the first hard board portion 121b1 has a first connecting hole 1211e, and the first pole 112b and the inner wall of the first connecting hole 1211e are fixed and electrically connected; the second hard board portion 121b3 has a second connecting hole 1211f, and the second pole 112c and the inner wall of the second connecting hole 1211f are fixed and electrically connected.

[0117] The rigid-flexible board 121b can be connected to the two poles 112 whose end faces are not coplanar, so as to fix and electrically connect the first pole 112b to the inner wall of the first connection hole 1211e, and fix and electrically connect the second pole 112c to the inner wall of the second connection hole 1211f. The first hard board portion 121b1 and the second hard board portion 121b3 are fixed and electrically connected via the flexible board portion 121b2. When the rigid-flexible board 121b is connected to the mainboard of the electronic device, the hard shell battery 100 can supply power to the mainboard and other electronic devices of the electronic device, the mainboard can control the hard shell battery 100, and the signal of the hard shell battery 100 can be fed back to the mainboard. The axial direction of the first connection hole 1211e can be the thickness direction of the first hard board portion 121b1, and the axial direction of the second connection hole 1211f can be the thickness direction of the second hard board portion 121b3.

[0118] For example, see Fig.14 The first pole 112b is arranged on the first transverse surface 111d, and the second pole 112c is arranged on the second transverse surface 111f. The circuit board 121 may be a flexible and rigid board 121b, and the first pole 112b and the second pole 112c are respectively fixed and electrically connected to the first rigid board portion 121b1 and the second rigid board portion 121b3 of the flexible and rigid board 121b.

[0119] For example, see Fig.15 The first pole 112b is arranged on the first transverse surface 111d, and the second pole 112c is arranged on the vertical surface 111e. The circuit board 121 may be a flexible and rigid board 121b, and the first pole 112b and the second pole 112c are respectively fixed and electrically connected to the first rigid board portion 121b1 and the second rigid board portion 121b3 of the flexible and rigid board 121b.

[0120] For example, see Fig.16 The first pole 112b is arranged on the vertical surface 111e, and the second pole 112c is arranged on the second horizontal surface 111f. The circuit board 121 may be a flexible and rigid board 121b, and the first pole 112b and the second pole 112c are respectively fixed and electrically connected to the first rigid board portion 121b1 and the second rigid board portion 121b3 of the flexible and rigid board 121b.

[0121] In order to connect the two poles with coplanar end faces to the circuit board 121, in some embodiments, see Fig.17 The end surface of the first pole 112b away from the first transverse surface 111d and the end surface of the second pole 112c away from the second transverse surface 111f are coplanar; the circuit board 121 is a hard circuit board 121a, the first pole 112b is arranged on the first transverse surface 111d, and the second pole 112c is arranged on the second transverse surface 111f.

[0122] The hard circuit board 121a can be connected to the two poles 112 with coplanar end faces. The hard circuit board 121a has a first connection hole 1211e and a second connection hole 1211f, so that the first pole 112b is fixed and electrically connected to the inner wall of the first connection hole 1211e, and the second pole 112c is fixed and electrically connected to the inner wall of the second connection hole 1211f. When the hard circuit board 121a is connected to the mainboard of the electronic device, the hard shell battery 100 can supply power to the mainboard and other electronic devices of the electronic device, the mainboard can control the hard shell battery 100, and the signal of the hard shell battery 100 can be fed back to the mainboard.

[0123] In order to make the solution of inserting the pole into the connection hole applicable to the scenario where the two poles face different directions, in some embodiments, refer to Fig.18 The hard shell 111 has a first surface 111h and a second surface 111i with different orientations, and the multiple poles 112 include a first pole 112b and a second pole 112c, the first pole 112b is arranged on the first surface 111h, and the second pole 112c is arranged on the second surface 111i; the circuit board 121 is a flexible and rigid board 121b, and the flexible and rigid board 121b includes a first rigid board part 121b1, a flexible board part 121b2 and a second rigid board part 121b3 connected in sequence; the first rigid board part 121b1 has a first connecting hole 1211e, and the first pole 112b and the inner wall of the first connecting hole 1211e are fixed and electrically connected; the second rigid board part 121b3 has a second connecting hole 1211f, and the second pole 112c and the inner wall of the second connecting hole 1211f are fixed and electrically connected.

[0124] The rigid-flexible board 121b can be connected to two poles 112 with different orientations, so as to fix and electrically connect the first pole 112b to the inner wall of the first connection hole 1211e, and fix and electrically connect the second pole 112c to the inner wall of the second connection hole 1211f, so that the orientation arrangement of the plurality of poles 112 is more flexible. The first hard board portion 121b1 and the second hard board portion 121b3 are fixed and electrically connected by the flexible board portion 121b2. When the rigid-flexible board 121b is connected to the mainboard of the electronic device, the hard shell battery 100 can supply power to the mainboard and other electronic devices of the electronic device, the mainboard can control the hard shell battery 100, and the signal of the hard shell battery 100 can be fed back to the mainboard. The axial direction of the first connection hole 1211e can be the thickness direction of the first hard board portion 121b1, and the axial direction of the second connection hole 1211f can be the thickness direction of the second hard board portion 121b3.

[0125] For example, see Fig.18 The first pole 112b extends along the X direction, and the second pole 112c extends along the Y direction. The first pole 112b and the second pole 112c are respectively arranged on two adjacent surfaces of the hard shell 111.

[0126] In some embodiments, see Fig.19 , also includes an adapter 140, one end of the adapter 140 is fixed and electrically connected to the hard shell 111, and the other end of the adapter 140 is fixed and electrically connected to the circuit board 121. The hard shell 111 can be used as one of the electrodes of the battery cell 110, and the hard shell 111 and the circuit board 121 are conductively connected through the adapter 140. The adapter 140 can be a conductive structure such as a nickel sheet. The adapter 140 can be U-shaped or sheet-shaped or in other shapes. The adapter 140 and the hard shell 111, and the adapter 140 and the circuit board 121 can be fixed and electrically connected by welding or other means.

[0127] Exemplarily, the hard shell 111 is provided with a pole 112 and an adapter 140, the hard shell 111 and the pole 112 are insulated from each other, and the adapter 140 is conductively connected to the hard shell 111. The hard shell 111 can be used as a negative pole, and the pole 112 can be used as a positive pole.

[0128] See also Fig. 20 , an embodiment of the present application provides a battery module 100a, comprising a plurality of the above-mentioned hard shell batteries 100, wherein the plurality of hard shell batteries 100 are arranged in an array and electrically connected.

[0129] A plurality of hard shell batteries 100 are arranged in an array and combined in series, parallel or series-parallel mode to form a battery module 100a with predetermined performance. The battery module 100a can be used as a power battery for new energy vehicles and other equipment.

[0130] See also Fig.21 The embodiment of the present application provides an electronic device 1000, comprising the hard shell battery 100 or the battery module 100a. The hard shell battery 100 or the battery module 100a is used to supply power to other electronic devices of the electronic device 1000.

[0131] Combination Figure 4 , Figure 6 The hard shell battery 100 may include a battery cell 110 and a circuit board 121, and the battery cell 110 and the circuit board 121 are electrically connected. The electronic device 1000 also includes a mainboard 200, and the circuit board 121 and the mainboard 200 are electrically connected, so that the hard shell battery 100 can supply power to the mainboard 200 and other electronic devices of the electronic device 1000, the mainboard 200 can control the hard shell battery 100, and the signal of the hard shell battery 100 can be fed back to the mainboard 200. The circuit board 121 and the mainboard 200 can be connected and conducted by a connector or the like.

[0132] The electronic device 1000 may be a consumer electronic product, a home electronic product, a vehicle-mounted electronic product, a financial terminal product, a communication electronic product, a mobile device, etc. Among them, the consumer electronic product may be a mobile phone, a tablet computer (pad), a laptop computer, an e-reader, a personal computer (PC), a personal digital assistant (PDA), a desktop display, a smart wearable product (such as a smart watch, a smart bracelet), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a drone, etc. The home electronic product may be a smart door lock, a television, a remote control, a refrigerator, a charging small household appliance (such as a sweeping robot), etc. The vehicle-mounted electronic product may be a vehicle-mounted navigator, a vehicle-mounted high-density digital video disc (DVD), etc. The financial terminal product may be an automated teller machine (ATM), a terminal for self-service handling of business, etc. The communication electronic product may be a communication device such as a server, a memory, a radar, a base station, etc. The mobile device may be a vehicle, an electric skateboard, an electric bicycle, etc.

[0133] For example, see Fig.21 , the electronic device 1000 is a mobile phone, and the mobile phone includes a display screen 300, a middle frame 400 and a back cover 500. The display screen 300 and the back cover 500 are respectively arranged on opposite sides of the middle frame 400. The middle frame 400 and the back cover 500 can be an assembled structure or an integrally formed structure. The middle frame 400 has a battery compartment 401, and the hard shell battery 100 can be fixed in the battery compartment 401 by means of a back glue 140, a buckle, etc., and the back cover 500 is covered on the hard shell battery 100. A main board 200 is provided on the middle frame 400, and the circuit board 121 of the hard shell battery 100 is electrically connected to the main board 200. The middle frame 400 is also provided with a camera 600, a speaker and other devices.

[0134] When confirming the use of the hard shell battery 100, the battery module 100a and the electronic device 1000 of the embodiment of the present application, the hard shell battery 100 can be disassembled and analyzed, and it can be confirmed by visual inspection or electronic computed tomography (CT) that the pole 112 is inserted into the connecting hole 1211 of the circuit board 121, and the pole 112 and the inner wall of the connecting hole 1211 are welded.

[0135] Finally, it should be noted that the above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hard shell battery, characterized in that: include: Battery cells and circuit boards; The battery core comprises a hard shell and at least one pole, wherein the pole extends out of the surface of the hard shell; The circuit board has a connection hole corresponding to the pole, the connection hole extends along the thickness direction of the circuit board, the pole is at least partially inserted in the connection hole, and the pole and the inner wall of the connection hole are fixed and electrically connected.

2. The hard shell battery according to claim 1, characterized in that: An electronic device is arranged on a side of the circuit board facing the hard shell, a gap is formed between the circuit board and the hard shell, and the electronic device is located in the gap.

3. The hard shell battery according to claim 1, characterized in that: The invention also includes an insulating portion, wherein the insulating portion covers the exposed area of ​​the pole.

4. The hard case battery according to claim 3, characterized in that: The insulating part is connected to the hard shell, and the insulating part is connected to the circuit board.

5. The hard case battery according to claim 3, characterized in that: The insulating part includes at least one of insulating tape and an injection molding part.

6. The hard case battery according to claim 5, characterized in that: The insulating portion includes insulating tape, a portion of the insulating tape is coated on a side of the circuit board facing away from the hard shell, and another portion of the insulating tape is coated on the outer circumference of one or more poles; Or, the insulating part includes an injection molded part, a part of the injection molded part is coated on the side of the circuit board facing away from the hard shell; another part of the injection molded part is filled between the circuit board and the hard shell, and coated on the outer peripheral surface of one or more of the poles; Alternatively, the insulating part includes an injection molding part and insulating tape, the injection molding part is filled between the circuit board and the hard shell, and is coated on the outer peripheral surface of one or more of the poles; the insulating tape is at least coated on the side of the circuit board facing away from the hard shell.

7. The hard case battery according to any one of claims 1 to 6, characterized in that: The pole has a limiting portion, the connecting hole has a port facing the hard shell, the edge of the port is against the limiting portion, and the circuit board and the hard shell are spaced apart.

8. The hard case battery according to claim 7, characterized in that: The pole is in a truncated cone or a prism shape, and has a large end and a small end. The large end serves as the limiting portion and is connected to the hard shell. The large end is located outside the connecting hole, and the small end is located inside the connecting hole.

9. The hard case battery according to any one of claims 1 to 6, characterized in that: The hard shell is in the shape of a cuboid, and the plurality of poles are arranged on the same surface of the hard shell in the length direction.

10. The hard case battery according to any one of claims 1 to 6, characterized in that: The connecting hole is a through hole or a blind hole.

11. The hard case battery according to any one of claims 1 to 6, characterized in that: The circuit board includes a hard circuit board, the connection hole is provided on the hard circuit board, and the pole and the hard circuit board are fixed and electrically connected; Or, the circuit board includes a flexible-rigid combination board, the flexible-rigid combination board includes a flexible circuit board and a rigid circuit board, the flexible circuit board and the rigid circuit board are connected and conducted, the connection hole is provided on the rigid circuit board, and the pole and the rigid circuit board are fixed and electrically connected; Alternatively, the circuit board includes a flexible circuit board and a reinforcing sheet, the reinforcing sheet is stacked on the flexible circuit board, the connecting hole is provided on the flexible circuit board, and the pole and the flexible circuit board are fixed and electrically connected.

12. The hard case battery according to any one of claims 1 to 6, characterized in that: The hard shell has a step surface, which includes a first transverse surface, a vertical surface and a second transverse surface connected in sequence, and the planes where the first transverse surface and the second transverse surface are located are arranged at an interval; the multiple poles include a first pole and a second pole, the first pole is arranged on one of the three walls of the first transverse surface, the vertical surface and the second transverse surface, and the second pole is arranged on the other wall of the three walls of the first transverse surface, the vertical surface and the second transverse surface.

13. The hard case battery according to claim 12, characterized in that: The end surface of the first pole away from the first transverse surface and the end surface of the second pole away from the second transverse surface are not coplanar; the circuit board is a flexible-rigid combination board, and the flexible-rigid combination board includes a first hard board part, a flexible board part and a second hard board part connected in sequence; the first hard board part has a first connecting hole, and the first pole is fixed and electrically connected to the inner wall of the first connecting hole; the second hard board part has a second connecting hole, and the second pole is fixed and electrically connected to the inner wall of the second connecting hole; Or, the end face of the first pole away from the first transverse surface and the end face of the second pole away from the second transverse surface are coplanar; the circuit board is a hard circuit board, the first pole is arranged on the first transverse surface, and the second pole is arranged on the second transverse surface.

14. The hard case battery according to any one of claims 1 to 6, characterized in that: The hard shell has a first surface and a second surface with different orientations, the plurality of poles include a first pole and a second pole, the first pole is arranged on the first surface, and the second pole is arranged on the second surface; The circuit board is a flexible and rigid board, which includes a first rigid board portion, a flexible board portion, and a second rigid board portion connected in sequence; the first rigid board portion has a first connecting hole, and the first pole and the inner wall of the first connecting hole are fixed and electrically connected; the second rigid board portion has a second connecting hole, and the second pole and the inner wall of the second connecting hole are fixed and electrically connected.

15. The hard case battery according to any one of claims 1 to 6, characterized in that: It also includes a conversion component, one end of which is fixed and electrically connected to the hard shell, and the other end of which is fixed and electrically connected to the circuit board.

16. A battery module, characterized in that: It comprises a plurality of hard shell batteries as claimed in any one of claims 1 to 15, wherein the plurality of hard shell batteries are arranged in an array and electrically connected.

17. An electronic device, characterized in that: It comprises a hard shell battery as described in any one of claims 1 to 15 or a battery module as described in claim 16.

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