Rechargeable battery and electric device

Abstract

According to the rechargeable battery and the power utilization device provided by the invention, in the rechargeable battery, the battery metal shell is electrically connected with the battery metal shell and the control circuit board respectively, and the negative electrode of the control circuit board is connected with the battery metal shell, so that the battery metal shell and the charging interface serve as the negative electrode of the battery; according to the battery, the problems of the battery shell and the control circuit board caused by welding a nickel sheet in the existing battery can be avoided, the problems of false soldering, pseudo soldering and welding spots generated by welding are effectively avoided, the overall internal resistance of the battery is prevented from increasing, and the reliability of the battery is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rechargeable batteries, in particular to a rechargeable battery and an electric device. BACKGROUND

[0002] With the development of society, many electronic products are increasingly electronic and intelligent. Since lithium batteries need a special charger for charging, many electronic products currently still use traditional disposable alkaline or carbon dry batteries. Nickel-hydrogen and nickel-chromium rechargeable batteries need a special charger to charge these batteries, and the high cost of the charger increases the user's use cost.

[0003] Currently, in the production process of rechargeable batteries, a piece of nickel sheet needs to be additionally welded out from the circuit board to connect the charging PCBA and the battery shell. This process needs to manually weld or laser weld the nickel sheet and the negative electrode on the PCBA, and then the nickel sheet is crimped with the battery metal shell. This method not only has low efficiency, but also increases the overall internal resistance of the battery due to the increased connection points, and the multiple connection points increase the unreliability of the finished product due to the occurrence of false welding and virtual welding. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the present application is that rechargeable batteries need to be additionally welded with nickel sheets in the production process to connect the charging PCBA and the battery shell, and then the nickel sheet is crimped with the battery metal shell. This method not only has low efficiency, but also increases the overall internal resistance of the battery due to the increased connection points, and the multiple connection points increase the unreliability of the finished product due to the occurrence of false welding and virtual welding.

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a rechargeable battery and an electric device.

[0006] In a first aspect, the utility model discloses a rechargeable battery, which comprises a charging interface, a battery metal shell and a control circuit board, the charging interface is in contact with the battery metal shell, and the charging interface is used for connecting an external interface.

[0007] The battery metal shell is in the shape of a cylinder with one end open, the control circuit board and the charging interface are arranged in the battery metal shell, and the charging interface is connected with the control circuit board.

[0008] Preferably, a first opening is formed in the side wall of the battery metal shell, the charging interface is mounted at a position corresponding to the first opening, the shape of the first opening matches that of the charging interface, and the inner surface of the first opening is in contact with the surface of the charging interface.

[0009] Preferably, the first opening inner surface of the battery metal shell is tangent to or communicates with the open edge of the battery metal shell.

[0010] Preferably, the edge of the one end port of the charging interface is tangent to the outer surface of the battery metal shell.

[0011] Preferably, the battery metal shell comprises an electric core, the electric core is installed in the battery metal shell, the electric core is connected with the control circuit board, and the electric core is installed inside the battery metal shell.

[0012] Preferably, the electric core comprises a positive pole lug and a negative pole lug, the positive pole lug is electrically connected with the control circuit board, and the negative pole lug is electrically connected with the control circuit board.

[0013] The negative pole lug is connected with the charging interface, or the negative pole lug is connected with the battery metal shell.

[0014] Preferably, the charging interface comprises an interface metal shell, and the interface metal shell is electrically connected with the control circuit board.

[0015] Preferably, a contact piece is arranged on a surface of the control circuit board, the contact piece is arranged opposite to a mounting surface of the charging interface, and the contact piece is electrically connected with the positive pole lug.

[0016] Preferably, the battery metal shell comprises a positive pole assembly, the positive pole assembly is arranged at the open end of the battery metal shell, and the positive pole assembly is connected with the control circuit board.

[0017] Preferably, the positive pole assembly comprises an insulating piece and a positive pole piece, the positive pole piece is connected with the control circuit board, the positive pole piece penetrates through the insulating piece, the insulating piece is matched with the opening of the battery metal shell in shape, and the insulating piece is buckled on the opening of the battery metal shell.

[0018] Preferably, the insulating piece is provided with a second first opening, and the charging interface is located in position corresponding to the second first opening.

[0019] Preferably, the control circuit board is provided with a conductive hole and a contact surface, the conductive hole is arranged in a range of the contact surface, and the contact surface is in contact with the positive pole piece.

[0020] The positive pole piece is divided into a fixed part and a contact part, the fixed part and the contact part are integrally formed, the fixed part is connected with the conductive hole, and the contact surface is connected with the contact part.

[0021] In a second aspect, the utility model discloses a kind of electric devices, which comprises the rechargeable battery described above.

[0022] The above technical scheme provided by the application has the following advantages compared with the prior art:

[0023] The rechargeable battery and the electric device provided by the application, wherein in the rechargeable battery, the battery metal shell is electrically connected with the battery metal shell and the control circuit board respectively, the negative electrode of the control circuit board is connected with the battery metal shell, the battery metal shell and the charging interface serve as the negative electrode of the battery, the problem that the existing battery is connected with the control circuit board through welding of a nickel sheet is avoided, false welding, virtual welding and the problem of welding spots are effectively avoided, the overall internal resistance of the battery is prevented from being large, and the reliability of the battery is increased.

[0024] The structure of the rechargeable battery, the distance between the positive and negative electrodes of the battery cell is increased, the positive and negative electrodes of the battery cell are prevented from being short-circuited when the control circuit board and the battery cell are electrically connected, the safety hidden danger of battery failure and production is caused, the structure of the existing rechargeable battery is simplified, and automatic production is facilitated.

[0025] In addition, the charging interface is mounted at the first opening of the battery metal shell, the inner surface of the first opening is in contact with the surface of the charging interface, the problem that the charging interface in the battery is difficult to align with the first opening of the battery metal shell is solved, the difficulty of the action that the user inserts the charger into the charging interface of the battery is reduced, or the charging interface extends from the second opening of the positive electrode assembly, and the charging interface is in contact with the battery metal shell, the charging interface and the battery metal shell are electrically connected, the setting position of the charging interface of the battery is more diversified, and the structure of the charging interface is adapted to more types and sizes of batteries. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principle of the present application.

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 A structural schematic diagram of a rechargeable battery provided by the application is shown in the figure.

[0029] Figure 2 An explosion structural schematic diagram of a rechargeable battery provided by the application is shown in the figure.

[0030] Figure 3 A structural schematic diagram of a battery metal shell of a rechargeable battery provided by the application is shown in the figure.

[0031] Figure 4 A connection structure of an electric core, a control circuit board, and a charging interface of a rechargeable battery provided in the present application Figure 1 ;

[0032] Figure 5 A connection structure of an electric core, a control circuit board, and a charging interface of a rechargeable battery provided in the present application Figure 2 ;

[0033] Figure 6 A perspective structure of a rechargeable battery provided in the present application

[0034] Figure 7 A connection structure of a control circuit board and a charging interface of a rechargeable battery provided in the present application Figure 1 ;

[0035] Figure 8 A connection structure of a control circuit board and a charging interface of a rechargeable battery provided in the present application Figure 2 ;

[0036] Figure 9 A connection structure of a control circuit board and a charging interface of a rechargeable battery provided in the present application Figure 3 ;

[0037] Figure 10 A connection structure of a positive component of a rechargeable battery provided in the present application Figure 1 ;

[0038] Figure 11 A connection structure of a positive component of a rechargeable battery provided in the present application Figure 2 ;

[0039] Figure 12 A connection structure of a positive component, a control circuit board, and a charging interface of a rechargeable battery provided in the present application

[0040] Figure 13 A structure of a positive component of a rechargeable battery provided in the present application

[0041] Figure 14 A structure of a rechargeable battery provided in the second embodiment of the present application Figure 1 ;

[0042] Figure 15 A perspective structure of a rechargeable battery provided in the second embodiment of the present application Figure 1 ;

[0043] Figure 16An internal perspective structure of a rechargeable battery according to the second embodiment of the present application Figure 2 ;

[0044] Figure 17 An internal perspective structure of a rechargeable battery according to the second embodiment of the present application Figure 3 ;

[0045] Figure 18 An internal perspective structure of a rechargeable battery according to the second embodiment of the present application Figure 2 ;

[0046] Figure 19 An internal perspective structure of a rechargeable battery according to the second embodiment of the present application Figure 4 ;

[0047] Figure 20 An internal perspective structure of a rechargeable battery according to the second embodiment of the present application Figure 5 ;

[0048] Figure 21 An internal perspective structure of a rechargeable battery according to the second embodiment of the present application Figure 6 ;

[0049] Figure 22 A connection structure of a charging interface, a positive electrode member and a control circuit board of a rechargeable battery according to the second embodiment of the present application

[0050] BRIEF DESCRIPTION OF THE DRAWINGS

[0051] 1. A rechargeable battery

[0052] 11. A charging interface; 111. An interface metal shell

[0053] 12. A battery metal shell; 121. A first opening; 122. An open mouth

[0054] 13. A control circuit board; 131. A contact member; 132. A conductive hole; 133. A contact surface

[0055] 14. A positive electrode assembly; 141. An insulating member; 1411. A channel; 1412. A second opening; 142. A positive electrode member; 1421. A fixed part; 1422. A contact part; 1423. A positive electrode cap

[0056] 15. An electrode core; 151. A positive electrode tab; 152. A negative electrode tab

[0057] 16. An insulating layer DETAILED DESCRIPTION

[0058] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the accompanying drawings in the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0059] Embodiment one:

[0060] Referring to Figures 1-13 The present embodiment discloses a rechargeable battery 1, which can provide power supply for electronic devices and can be connected to an external power supply for charging.

[0061] Optionally, the model of the rechargeable battery 1 can be a cylindrical battery with a diameter of 13 mm or less than 13 mm, for example, a No. 6, No. 7, No. 8, or No. 9 battery. In the present embodiment, the model of the rechargeable battery 1 is No. 7, but the model of the rechargeable battery 1 is not limited to the model used in the present embodiment.

[0062] Currently, small-sized batteries such as No. 7 batteries are used, and the preparation process is complex due to the small size. Two types of No. 7 lithium batteries that use Type-C charging have appeared on the market. They reduce the voltage of the current lithium ion battery from 3.7V to 1.5V through a step-down chip. One type of battery 15 adopts a polymer cylindrical lithium ion battery, and one type of battery 15 adopts a capacitor type lithium ion battery. Since the size of the No. 7 battery is relatively small (diameter 10 mm, height 44 mm), in order to ensure that the battery has sufficient capacity, the size of the circuit board carrying the PCB function must be very small, controlled within 9 mm wide and 16 mm long. In addition, Type-C is a standard component with a width of at least 5 mm and a length of 8.9 mm. In addition to the soldering point, therefore, the PCB actually only has one side that can be used to place the chip, and in the 9 mm wide and 16 mm long area, it is necessary to place the charging core 15, the step-down chip, and the resistor, capacitor, inductor, and lamp. This requires very fine design of the PCB, and every 1 mm reduction in the length of the PCB can increase the capacity of the battery by 5%. Therefore, designing a simple and small PCB structure for No. 7 battery is an important key indicator of the performance of a rechargeable battery 1. The two existing schemes currently have their own shortcomings. The polymer battery has the following shortcomings: first, the circuit board needs to be connected to the battery metal shell 12 as the negative electrode by additional nickel sheet; second, the circuit board needs to be fixed in the insulating plastic first; third, the position of Type-C in the object is far from the center position, and fourth, the circuit board adopts a side soldering process, which is used to connect the positive electrode of the battery core 15 and the positive electrode of the battery output. This side soldering process is complex and has high cost. The circuit board structure of the capacitor type has the following shortcomings: first, the two connection points on the circuit board for electrical connection with the capacitor battery are located on the side of Type-C, and the distance from the lower edge of Type-C is very close, and the connection area is only 3.5 mm, which makes soldering very difficult, low in efficiency, and too close to Type-C, which can easily cause short circuit of the battery; second, the PCB needs to be soldered with a nickel sheet to connect with the battery metal shell 12; third, after the entire PCB is connected with the capacitor type battery core 15, the position is biased on one side, and when the positive electrode is linked, the PCB needs to be aligned with the cap. The assembly process of the traditional rechargeable battery 1 is complex, which is not conducive to automation, and has many production steps, so a rechargeable battery 1 is provided to solve the above problems.

[0063] The rechargeable battery 1 comprises a charging interface 11, a battery metal shell 12, a control circuit board 13, a battery cell 15, and a positive electrode assembly 14. The battery metal shell 12 is in the shape of a cylinder with one end open. The open end of the battery metal shell 12 is an opening 122. The positive electrode assembly 14 is installed on the opening 122. The positive electrode assembly 14 is connected with the battery metal shell 12 in a snap-fit manner, thereby improving the overall airtightness of the rechargeable battery 1. The control circuit board 13 is connected with the positive electrode assembly 14, the battery metal shell 12, and the battery cell 15, respectively. The charging interface 11 is connected with the control circuit board 13. The charging interface 11 is in contact with the battery metal shell 12.

[0064] Specifically, the control circuit board 13, the charging interface 11, and the battery cell 15 are arranged in the battery metal shell 12. The positive electrode assembly 14 is electrically connected with the positive electrode connection position on the control circuit board 13 to transmit electrical signals. The charging interface 11 is installed on one surface of the control circuit board 13. The charging interface 11 is electrically connected with the battery cell 15. The charging interface 11 is in contact with the battery metal shell 12. The outer diameter of the battery cell 15 is equal to or less than the inner diameter of the battery metal shell 12.

[0065] It can be understood that the rechargeable battery 1 provided by the present application is electrically connected with the battery metal shell 12 and the control circuit board 13, respectively. The negative electrode of the control circuit board 13 is connected with the battery metal shell 12, so that the battery metal shell 12 and the charging interface 11 serve as the negative electrode of the battery. This can avoid the problems caused by welding a nickel sheet to connect the battery shell and the control circuit board 13 in the existing battery. This effectively avoids false welding, virtual welding, and the problems caused by welding. This prevents the overall internal resistance of the battery from becoming large and increases the reliability of the battery.

[0066] In this embodiment, the charging interface 11 adopts a female seat interface of TYPE-C. Alternatively, the charging interface 11 can adopt any one of Micro-USB, Lightning, Thunderbolt, etc.

[0067] The side wall of the battery metal shell 12 is provided with a first opening 121. The shape of the first opening 121 matches the shape of the charging interface 11. The inner surface of the first opening 121 is in contact with the surface of the charging interface 11. Specifically, the first opening 121 is arranged on the battery metal shell 12. The circumference of the first opening 121 is equal to the circumference of the cross section of the outer periphery of the charging interface 11. The first opening 121 is in contact with the charging interface 11, so that the battery metal shell 12 can be directly in contact with the charging interface 11 for conduction. This avoids additional welding treatment and reduces the generation of welding points, virtual welding, and false welding. This keeps the overall internal resistance of the battery at a stable value and improves the stability of the battery.

[0068] The edge of the one end port of the charging interface 11 is tangent to the outer surface of the battery metal shell 12, so that the charging interface 11 is within the range of the first opening 121, and the port edge of the charging interface 11 is at a level with the outer surface of the battery metal shell 12, solving the problem of difficult alignment of the first opening 121 between the charging interface 11 and the battery metal shell 12. The existing battery has a misalignment between the charging interface 11 and the first opening 121 on the shell, which can easily cause the user to have difficulty inserting the charging port and can easily cause the charging interface 11 to be skewed inside. The current setting limits the setting position of the charging interface 11 through the first opening 121 to avoid displacement, making the charging action more convenient.

[0069] In addition, the charging interface 11 is close to the surface of the control circuit board 13, and there is a connected area on the charging interface 11 for mounting the charging interface 11 on the control circuit board 13. When the charging interface 11 is installed, an area with a length of at least 0.5 mm needs to be reserved, and the area is close to the port of the charging interface 11 for mounting between the charging interface 11 and the battery metal shell 12. That is, the charging interface 11 includes an area connected to the control circuit board 13 and an area connected to the battery metal shell 12. It can be understood that the charging interface 11 extends outward from one side of the control circuit board 13 by a certain length, which is at least 0.5 mm, so that the charging interface 11 contacts the battery metal shell 12. This structure can directly embed the charging interface 11 into the battery metal shell 12, use the charging interface 11 and the battery metal shell 12 to directly connect, without welding a nickel sheet on the battery connection on the shell of the charging interface 11, increasing the stability of the connection and reducing the internal resistance, and also increasing the overall connection strength. The first opening 121 on the battery metal shell 12 is used to fix the Type-C, thereby enhancing the reliability of the connection on the entire PCB.

[0070] As an embodiment, the inner surface of the first opening 121 of the battery metal shell 12 is tangent to or communicates with the edge of the opening 122 of the battery metal shell 12. It can be understood that the first opening 121 can be located away from the opening 122 on the side wall, can be tangent to the edge of the opening 122, or the inner surface of the first opening 121 can communicate with the edge of the opening 122, so that the edge of the opening 122 is open, thereby diversifying the position of the charging interface 11, which can be in the middle or at the end. When set at the end, the charging interface 11 can be closer to the opening 122, so that the space for accommodating the battery cell 15 inside the battery can be larger, and the length of the battery cell 15 can be larger.

[0071] It can be understood that, when the battery is in use, the charging interface 11 and the battery metal shell 12 are negative, the positive assembly 14 is positive, the charging interface 11 and the positive assembly 14 are respectively connected to the control circuit board 13, and the charging interface 11 is in contact with the battery metal shell 12. Therefore, the battery metal shell 12 can serve as the negative of the battery, and the positive assembly 14 is located at one end of the battery metal shell 12, so that the positive and negative of the battery are respectively located at two ends of the battery, facilitating the battery to supply power in the electronic device.

[0072] The battery cell 15 includes a positive tab 151 and a negative tab 152. The negative tab 152 is in conductive communication with the charging interface 11, and the positive tab 151 is connected to the control circuit board 13. The battery cell 15 is clamped by the positive tab 151 and the negative tab 152, and is in conductive communication with the control circuit board 13, the charging interface 11, and the battery metal shell 12.

[0073] The control circuit board 13 has a contact piece 131 on one surface. The positive tab 151 is connected to the contact piece 131, and the charging interface 11 is directly mounted on the control circuit board 13. The contact piece 131 and the charging interface 11 are respectively arranged on two opposite surfaces of the control circuit board 13.

[0074] Alternatively, the positive tab 151 can be mounted on the contact piece 131 by any one of welding, direct contact, and plug-in connection. In this embodiment, the positive tab 151 is mounted on the contact piece 131 by direct contact.

[0075] Alternatively, the charging interface 11 can be mounted on the control circuit board 13 by any one of welding, direct connection, clamping, and plug-in connection. In this embodiment, the charging interface 11 is mounted on the control circuit board 13 by plug-in connection.

[0076] The charging interface 11 includes an interface metal shell 111. The interface metal shell 111 is electrically connected to the negative tab 152 and the control circuit board 13, respectively. The interface metal shell 111 is directly in contact with the battery metal shell 12, so that the interface metal shell 111 can directly conduct electricity with the battery metal shell 12. It can be understood that the positive tab 151 is connected to the contact piece 131 to transmit electrical signals, and the negative tab 152 is connected to the interface metal shell 111 to transmit electrical signals.

[0077] As an embodiment, as shown in Figures 4-5 The positive tab 151 and the negative tab 152 are parallelly arranged, and are arranged at the same end of the battery cell 15. The control circuit board 13 and the charging interface 11 are inserted between the positive tab 151 and the negative tab 152. The distance between the positive tab 151 and the negative tab 152 is equal to the sum of the thickness of the control circuit board 13 and the width of the charging interface 11. The thickness of the control circuit board 13 includes the thickness of the contact piece 131, and the width of the charging interface 11 is the size of the port (e.g., the width of the charging interface 11 is equal to the width of the port). Figure 9a) in the presence of a base.

[0078] Specifically, since the distance between the positive tab 151 and the negative tab 152 is less than or equal to the sum of the thickness of the control circuit board 13 and the width of the charging interface 11, the control circuit board 13 and the charging interface 11 can be stably clamped by the positive tab 151 and the negative tab 152, ensuring the electrical connection of the battery cell 15 with the control circuit board 13 and the charging interface 11, thereby meeting the requirement of installing the battery cell 15 with the positive and negative tabs 152 at the same end.

[0079] As an embodiment, as shown in Figure 6 the positive tab 151 and the negative tab 152 are arranged at the two ends of the battery cell 15, i.e., the positive tab 151 and the negative tab 152 are arranged at different ends, the negative tab 152 is connected with the battery metal shell 12, the battery metal shell 12 is connected with the interface metal shell 111, and the negative electrode is transmitted through the battery metal shell 12 and the interface metal shell 111 and the control circuit board 13, so that the battery metal shell 12 serves as the negative electrode, the positive tab 151 is connected with the control circuit board 13, the control circuit board 13 is in communication with the positive assembly 14, thereby enabling the battery to communicate with external devices, meeting the requirement of installing the battery cell 15 with the positive and negative tabs 152 at different ends, and the negative tab 152 is directly connected with the battery metal shell 12.

[0080] The positive assembly 14 includes an insulating piece 141 and a positive piece 142, the positive piece 142 is connected with the control circuit board 13, the positive piece 142 penetrates through the insulating piece 141, the insulating piece 141 matches the opening 122 of the battery metal shell 12 in shape, and the insulating piece 141 is buckled on the opening 122 of the battery metal shell 12.

[0081] Specifically, the insulating piece 141 is provided with a channel 1411 for mounting the positive piece 142, the positive piece 142 penetrates through the channel 1411, one end of the positive piece 142 is connected with the control circuit board 13, and the other end is exposed outside the battery shell and serves as the positive electrode of the battery. In the existing rechargeable battery 1, the contact between the circuit board and the positive electrode of the battery is made by separately forming two modules and assembling and producing by crimping. This production method needs to assemble the positive electrode and the insulating cap together first when preparing the positive electrode, then crimp the positive electrode module and the positive contact point of the PCBA, and finally assemble a complete battery. This structure design has some defects. First, the process is complex and needs multiple assembly, which is not conducive to automatic production. Second, the stability of the crimping part of the battery positive electrode module and the circuit board is poor. Third, the PCBA is prone to misalignment during assembly and needs to be aligned to prevent the circuit board and the positive electrode module from being connected in the wrong position.

[0082] In the embodiment, the rechargeable battery 1 adopts the structure that the positive tab 151 contacts the contact piece 131, the positive piece 142 is connected with the control circuit board 13, the positive piece 142 penetrates the insulating piece 141, one end of the positive piece 142 is exposed outside, the insulating piece 141 can isolate the positive piece 142 from the battery metal shell 12, so as to avoid the direct conduction of the positive and negative poles of the battery, the control circuit board 13 is provided with a conductive hole 132, that is, the positive connection position mentioned above, the positive piece 142 is embedded in the conductive hole 132, the positive piece 142 of the battery directly contacts the control circuit board 13 and transmits the electrical signal with the control circuit board 13, so as to reduce the welding spot generated by welding, effectively simplify the production process and reduce the internal resistance of the battery.

[0083] As an embodiment, the insulating piece 141 can be made by injection molding or glue filling, and the insulating piece 141 can be directly made by glue filling at the opening 122 of the battery metal shell 12 after the positive tab 151 and the elements inside the battery metal shell 12 are installed. The manufacturing method can fix the positive tab 151 and seal the battery metal shell 12, so as to improve the sealing performance of the battery, the stability when the charging port is inserted into the battery, and the waterproof performance of the battery.

[0084] The positive piece 142 includes a fixed part 1421 and a contact part 1422, the width of the fixed part 1421 matches the inner diameter of the conductive hole 132 on the control circuit board 13, the fixed part 1421 is used for being inserted into the conductive hole 132, the control circuit board 13 is provided with a conductive contact surface 133 on the surfaces at the position of the conductive hole 132, that is, the surface is provided with a tin layer, the contact part 1422 contacts the contact surface 133, so as to make the positive piece 142 conduct with the control circuit board 13. Specifically, the fixed part 1421 is inserted into the conductive hole 132, due to the size matching, the fixed part 1421 is clamped at the position of the conductive hole 132, and the whole positive piece 142 is made of metal, so that the contact part 1422 directly contacts the contact surface 133, thereby completing the conduction between the positive piece 142 and the control circuit board 13.

[0085] Embodiment two:

[0086] Reference Figures 14-21The rechargeable battery 1 of the present embodiment is different from the first embodiment in that the control circuit board 13 is placed parallel to the battery cell 15, the charging interface 11 is arranged perpendicular to the control circuit board 13, the connecting end of the charging interface 11 faces the opening 122 of the battery metal shell 12, the positive electrode assembly 14 is arranged on the same side of the opening 122 as the charging interface 11, the second opening 1412 is arranged on the insulating member 141, and the second opening 1412 penetrates the insulating member 141, and the charging interface 11 can extend out of the second opening 1412 when the charging interface is arranged vertically. Alternatively, the charging interface 11 is arranged on the side wall of the battery metal shell 12, the charging interface 11 is exposed from the first opening 121 of the battery metal shell 12, the charging interface 11 is arranged parallel to the control circuit board 13, and the interface metal shell 111 is in contact with the control circuit board 13.

[0087] As shown in Figure 22 , the positive electrode assembly 14 is mounted in the middle region of the control circuit board 13, and the center of the pole cap of the positive electrode member and the center of the control circuit board 13 can not be on the same straight line, so as to pull apart the positive electrode member 142 and the charging interface 13 by a certain distance, avoid the two from colliding together to cause a circuit, and improve the safety of the battery. In the present example, the model of the rechargeable battery 11 can be a cylindrical battery with a diameter greater than 13 mm, such as a No. 1, No. 2, No. 5 battery, a 18650 battery, and a 21700 battery.

[0088] It can be understood that due to the diameter greater than 13 mm, the radius of the battery is greater than the length of the charging interface 11, so that the charging interface 11 can be directly arranged on the side wall of the battery, and at the same time, the charging interface 11 and the positive electrode assembly 14 can be arranged at the opening of the battery metal shell 12, and the opening exposed by the charging interface 11 can be arranged on the side wall of the battery metal shell 12 or the positive electrode assembly 14 in correspondence with the arrangement position of the charging interface 11.

[0089] As an embodiment, refer to Figures 14-17, the interface metal shell 111 of the charging interface 11 is tangent to and in contact with the battery metal shell 12, wherein the two side surfaces of the interface metal shell 111 are in contact with the inner wall of the battery metal shell 12, so that the interface metal shell 111 is in electrical conduction with the battery metal shell 12, the positive pole piece 142 of the positive pole assembly 14 is connected with the conductive hole 132 of the control circuit board 13, the control circuit board 13 is installed in the battery metal shell 12 in a parallel manner to the cross section of the battery metal shell 12, the electric core 15 of the rechargeable battery 1 is arranged with the positive pole ear 151 and the negative pole ear 152 at different ends, the positive pole ear of the electric core 15 faces the opening 122, the positive pole ear 151 of the electric core 15 is connected with the control circuit board 13, and the negative pole ear 152 of the electric core 15 is connected with the battery metal shell 12, so that the battery metal shell 12, the charging interface 11 and the control circuit board 13 are in conduction.

[0090] When the electric core 15 of the rechargeable battery 1 is arranged with the positive pole ear 151 and the negative pole ear 152 at the same end (as shown in Figure 17 ), the positive pole ear 151 of the electric core 15 faces the opening 122 and is connected with the control circuit board 13, and the negative pole ear 152 is bent to be in contact with the inner side wall of the battery metal shell 12, so that the negative pole ear 152, the battery metal shell 12, the charging interface 11 and the control circuit board 13 are in conduction, and the internal short circuit of the battery is avoided, in addition, in the existing battery, the PCBA board needs to be pre-set with two connection holes corresponding to the pole ears, and the pole ear needs to be inserted into the connection hole when the pole ear is connected with the needle, and the positive and negative poles need to be aligned with the two holes for electrical connection when being inserted, which is easy to be misaligned and cause the positive and negative pole connecting needles to be bent and short-circuited, and in order to facilitate insertion, the diameter of the connection hole is set to be large, which causes the connection to be complex and the overall internal resistance to be increased, and the bending of the negative pole ear 152 to be in contact with the battery metal shell 12 effectively solves the current problems, makes the installation more convenient and safe, and makes the production process more convenient and safe.

[0091] As an embodiment, referring to Figures 18-21 , the side wall of the battery metal shell 12 is provided with a first opening 121 matched with the charging interface 11, and the interface metal shell 111 of the charging interface 11 is connected with the control circuit board 13, before being installed into the battery metal shell 12, the charging interface 11 and the control circuit board 13 can be fixed by welding, and then installed into the battery metal shell 12, the charging interface 11 is matched with the position of the first opening 121, and the charging interface 11 is in contact with the edge of the first opening 121, so that the charging interface 11 and the first opening 121 are in electrical conduction.

[0092] The electric core 15 can be arranged with positive and negative pole ears at different ends or at the same end, which can meet the needs of the battery to use different types of electric cores 15.

[0093] When the battery cell 15 uses a configuration with opposite positive and negative tabs, the positive tab 151 of the battery cell 15 is connected to the control circuit board 13, the negative tab 151 is connected to the battery metal casing 12, and the charging interface 11 is in contact with the battery metal casing 12; when the battery uses a configuration with the same positive and negative tabs (e.g.) Figure 21 As shown, the positive tab 151 of the battery cell 15 is connected to the control circuit board 13, and the negative tab 152 is bent and contacts the metal casing 12 of the battery.

[0094] Optionally, an insulating layer 16 is provided between the battery cell 15 and the control circuit board 13. The positive electrode tab 151 of the battery cell 15 passes through the insulating layer 16, which can fix the positive electrode tab 151 of the battery cell 15 and prevent the positive electrode tab 151 from changing position inside the battery. Especially when the battery cell 15 uses positive and negative electrodes at the same end, the fixing of the positive electrode tab 151 and the negative electrode tab 152 by the insulating layer 16 can prevent them from coming into contact and prevent short circuits inside the battery.

[0095] Optionally, the positive electrode 142 can be in any shape, such as bent or curved (e.g., Figure 15 , 16 (As shown in Figure 21). It can be understood that the fixing portion 1421 of the positive electrode 142 is inserted into the conductive hole 132 of the control circuit board 13. The contact portion 1422 is bent to create a distance between it and the charging interface 11, preventing contact between the positive and negative electrodes. The contact portion 1422 contacts the contact surface 133 of the control circuit board 13, thereby enabling the positive electrode 142 to conduct electricity with the control circuit board 13. Furthermore, since the contact portion 1422 and the fixing portion 1421 are integrally formed, they can be bent into an arc shape to further separate the positive electrode 142 from the charging interface 11.

[0096] Optionally, the positive electrode 142 includes a positive electrode cap 1423 (e.g., Figure 20 As shown, the contact portion 1422 is positioned close to the edge of the positive terminal cap 1423, thereby lengthening the distance between the contact portion 1422 and the charging interface 11 and avoiding contact with the charging interface 11.

[0097] It is understandable that, based on the above-mentioned structural configuration of the positive electrode 151, the positive electrode 151 can be used in different ways to increase the distance between itself and the charging interface 11, so as to prevent the positive and negative electrodes of the battery from touching each other and causing a short circuit, thereby improving the safety of the battery.

[0098] Example 3:

[0099] This utility model discloses an electrical device, which includes the aforementioned rechargeable battery 1. The rechargeable battery 1 is installed inside the electrical device to provide power to the electrical device, thereby improving the portability of the electrical device.

[0100] In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0101] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0102] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0103] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be connected, or it can be detachable, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0104] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through other features between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and inclined upper of the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical and inclined lower of the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0105] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0106] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the claims of the present application and equivalents thereof. Therefore, the present application is intended to include these modifications and variations.

[0107] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rechargeable battery, characterized by The rechargeable battery comprises a charging interface, a battery metal shell, and a control circuit board, wherein the charging interface is in contact with the battery metal shell and is used for connecting an external interface. The battery metal shell is in a cylindrical shape with one end open, and the control circuit board and the charging interface are arranged in the battery metal shell, and the charging interface is connected with the control circuit board.

2. The rechargeable battery of claim 1, wherein, A first opening is arranged on the side wall of the battery metal shell, and the charging interface is arranged at a position corresponding to the first opening, the shape of the first opening matches the shape of the charging interface, and the inner surface of the first opening is in contact with the surface of the charging interface.

3. The rechargeable battery of claim 2, wherein, The inner surface of the first opening of the battery metal shell is tangent to or communicates with the open edge of the battery metal shell.

4. The rechargeable battery of claim 1, wherein, The edge of the port of one end of the charging interface is tangent to the outer surface of the battery metal shell.

5. The rechargeable battery of claim 1, wherein, The rechargeable battery comprises a battery core, wherein the battery core is arranged in the battery metal shell, and the battery core is connected with the control circuit board.

6. The rechargeable battery of claim 5, wherein, The battery core comprises a positive electrode tab and a negative electrode tab, wherein the positive electrode tab is electrically connected with the control circuit board, and the negative electrode tab is electrically connected with the control circuit board. The negative electrode tab is connected with the charging interface or the negative electrode tab is connected with the battery metal shell.

7. The rechargeable battery of claim 6, wherein, The charging interface comprises an interface metal shell, and the interface metal shell is electrically connected with the control circuit board.

8. The rechargeable battery of claim 6, wherein, One surface of the control circuit board is provided with a contact piece, the contact piece is arranged opposite to the mounting surface of the charging interface, and the contact piece is electrically connected with the positive electrode tab.

9. The rechargeable battery of claim 1, wherein, The rechargeable battery comprises a positive electrode assembly, wherein the positive electrode assembly is arranged at the open end of the battery metal shell, and the positive electrode assembly is connected with the control circuit board.

10. The rechargeable battery of claim 9, wherein, The positive electrode assembly comprises an insulating piece and a positive electrode piece, wherein the positive electrode piece is connected with the control circuit board, the positive electrode piece penetrates through the insulating piece, the shape of the insulating piece matches the opening of the battery metal shell, and the insulating piece is buckled on the opening of the battery metal shell.

11. The rechargeable battery of claim 10, wherein, The insulating piece is provided with a second opening, and the charging interface is arranged at a position corresponding to the second opening.

12. The rechargeable battery of claim 10, wherein, The control circuit board is provided with a conductive hole, and a contact surface is arranged on one surface of the control circuit board, the conductive hole is arranged in the range of the contact surface, and the contact surface is in contact with the positive electrode piece. The positive electrode piece is divided into a fixed part and a contact part, the fixed part and the contact part are integrally formed, the fixed part is connected with the conductive hole, and the contact surface is connected with the contact part.

13. An electrical device, characterized by The rechargeable battery comprises the rechargeable battery according to any one of claims 1-12.

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