Battery

Abstract

The utility model relates to a battery which comprises a shell, a battery cell and a circuit board, and the shell is provided with a first accommodating cavity and a first opening which are communicated with each other; the battery cell is arranged in the first accommodating cavity and is provided with a positive current collector; the circuit board is arranged outside the shell and is provided with a first surface and a second surface which are opposite to each other, the first surface is provided with a positive pole, the second surface is provided with an electric connecting part, the positive pole is electrically connected with the electric connecting part, and at least one of the electric connecting part and the positive current collector penetrates through the first opening, so that the electric connecting part is electrically connected with the positive current collector. Compared with the prior art, the battery has the advantages that the battery cell is accommodated in the shell, and the circuit board is arranged outside the shell, so that the circuit board is prevented from influencing the arrangement layout of the battery cell in the first accommodating cavity, and the energy density of the battery is further improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of energy storage, and particularly relates to a battery. BACKGROUND

[0002] The battery has the advantages of fast charging rate and long service life, and is widely applied to the fields of electric vehicles, smart phones, notebook computers and the like. In order to ensure the stability of the battery during charging and discharging, in the traditional technology, a circuit board is usually arranged in the shell of the battery, and the circuit board is used to prevent the battery from overcharging, overdischarging, overcurrent or short circuit and the like. However, the arrangement of the circuit board affects the arrangement layout of other components such as the battery cell in the shell, and further reduces the energy density of the battery. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a battery in view of the problem that the arrangement of the circuit board in the traditional technology affects the arrangement layout of other components such as the battery cell in the shell, and further reduces the energy density of the battery.

[0004] The technical scheme is as follows:

[0005] One embodiment provides a battery, comprising:

[0006] a shell, the shell having a first accommodating cavity and a first opening in communication;

[0007] a battery cell, the battery cell being arranged in the first accommodating cavity and being provided with a positive current collector;

[0008] a circuit board, the circuit board being arranged outside the shell and having opposite first and second surfaces, the first surface being provided with a positive pole, the second surface being provided with an electrical connection part, the positive pole being electrically connected with the electrical connection part, and at least one of the electrical connection part and the positive current collector being arranged in the first opening, so that the electrical connection part is electrically connected with the positive current collector.

[0009] The battery has the advantages that the battery cell is arranged in the first accommodating cavity of the shell, the positive pole and the electrical connection part are arranged on the first and second surfaces of the circuit board respectively, the electrical connection part arranged on the second surface is electrically connected with the positive current collector of the battery cell through the first opening on the shell, and the positive current collector of the battery cell is electrically connected with the positive pole through the electrical connection part. Therefore, the battery can realize the charging and discharging function of the battery cell through the positive pole. Compared with the traditional technology, the battery is arranged in the shell, and the circuit board is arranged outside the shell, so that the arrangement of the circuit board does not affect the arrangement layout of the battery cell in the first accommodating cavity, and the energy density of the battery is improved.

[0010] In one of the embodiments, the battery further comprises a protective cover arranged in the shell and having a second accommodating cavity and a second opening, the circuit board is located in the second accommodating cavity, and the positive pole post is arranged at a position corresponding to the position of the second opening.

[0011] In one of the embodiments, the battery further comprises a limiting member arranged in the shell and located in the second accommodating cavity, and the limiting member abuts against the first surface.

[0012] In one of the embodiments, the limiting member comprises a connecting portion, a sleeve and a limiting portion, the connecting portion is arranged at one end of the sleeve, the limiting portion is arranged at the other end of the sleeve, the connecting portion is connected with the shell, the sleeve is sleeved on the outer sidewall of the circuit board, and the limiting portion abuts against the first surface.

[0013] In one of the embodiments, the connecting portion comprises a connecting ring, the inner ring wall of the connecting ring is arranged at one end of the sleeve, the limiting portion comprises a limiting ring, the outer ring wall of the limiting ring is arranged at the end of the sleeve away from the connecting ring, the inner ring wall of the limiting ring surrounds to form a first window, and the positive pole post is sequentially arranged in the first window and the second opening.

[0014] In one of the embodiments, the battery further comprises a mounting member arranged in the shell and matched with the protective cover.

[0015] In one of the embodiments, the mounting member comprises a mounting ring and a mounting portion, the mounting ring is arranged in the shell, the inner ring wall of the mounting ring surrounds to form a second window corresponding to the position of the first opening, the circuit board is located on the side of the mounting ring away from the shell, the electric connecting portion and at least one of the positive current collectors are arranged in the second window to electrically connect the electric connecting portion with the positive current collectors, and the mounting portion is arranged in the mounting ring and matched with the protective cover.

[0016] In one of the embodiments, the mounting portion comprises a clamping protrusion arranged on the outer ring wall of the mounting ring, the inner sidewall of the second accommodating cavity is arranged with an annular groove, the inner sidewall of the second accommodating cavity is further arranged with a mounting groove located on the side of the annular groove facing the shell, the mounting groove is in communication with the annular groove, and the clamping protrusion can enter and exit the annular groove through the mounting groove.

[0017] In one of the embodiments, the shell comprises a mounting shell having the first accommodating cavity and a cover having the first opening and matched with the mounting shell.

[0018] In one of the embodiments, the mounting shell is further provided with a pressure relief part for pressure relief in the first accommodating cavity. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0020] Figure 1 The overall structure schematic diagram of the battery in the first embodiment of the present application.

[0021] Figure 2 The explosion schematic diagram of the battery in the first embodiment of the present application.

[0022] Figure 3 The explosion schematic diagram of the battery in the first embodiment of the present application.

[0023] Figure 4 The overall structure schematic diagram of the battery in the second embodiment of the present application.

[0024] Figure 5 The explosion schematic diagram of the battery in the second embodiment of the present application.

[0025] Figure 6 The explosion schematic diagram of the battery in the third embodiment of the present application.

[0026] Figure 7 The assembly schematic diagram of the circuit board in the third embodiment of the present application.

[0027] Figure 8 The explosion schematic diagram of the shell in the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 100, shell; 110, mounting shell; 111, first accommodating cavity; 112, pressure relief part; 120, cover; 121, first opening; 200, battery cell; 210, positive current collector; 211, positive pole lug; 212, positive lead-out part; 300, circuit board; 310, first surface; 311, positive pole; 320, second surface; 321, electrical connection part; 400, protective cover; 410, second accommodating cavity; 411, annular groove; 412, mounting groove; 413, assembly groove; 420, second opening; 500, limiting part; 510, connecting part; 520, sleeve; 530, limiting part; 531, first window; 600, mounting part; 610, mounting ring; 611, second window; 620, mounting part; 621, clamping protrusion. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In the present application, unless specifically defined otherwise, if there is a description of a first feature on or above or below a second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature can be above or above or above the second feature, or it can only mean that the first feature is higher in height than the second feature. The first feature can be below or below or below the second feature, or it can only mean that the first feature is lower in height than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0036] Please refer to Figures 1 to 3 One embodiment of the present application provides a battery, comprising a shell 100, a battery cell 200 and a circuit board 300, the shell 100 has a first accommodating cavity 111 and a first opening 121 in communication; the battery cell 200 is arranged in the first accommodating cavity 111 and is provided with a positive current collector 210; the circuit board 300 is arranged outside the shell 100 and has opposite first and second surfaces 310 and 320, the first surface 310 is provided with a positive pole 311 and is arranged away from the shell 100, the second surface 320 is provided with an electrical connection part 321 and is arranged towards the shell 100, the positive pole 311 is electrically connected with the electrical connection part 321, and at least one of the electrical connection part 321 and the positive current collector 210 is arranged through the first opening 121, so that the electrical connection part 321 is electrically connected with the positive current collector 210.

[0037] The battery described above, the battery cell 200 is arranged in the first accommodating cavity 111 of the shell 100, the positive pole 311 and the electric connection part 321 are arranged on the first surface 310 and the second surface 320 of the circuit board 300 respectively, the electric connection part 321 arranged on the second surface 320 is electrically connected with the positive current collector 210 of the battery cell 200 through the first opening 121 on the shell 100, and then the positive current collector 210 of the battery cell 200 is electrically connected with the positive pole 311 through the electric connection part 321, so that the battery can realize the charging and discharging function of the battery cell 200 through the positive pole 311; compared with the traditional technology, the battery described above contains the battery cell 200 through the shell 100, and the circuit board 300 is arranged outside the shell 100, so as to avoid the influence of the circuit board 300 on the arrangement of the battery cell 200 in the first accommodating cavity 111, and then improve the energy density of the battery.

[0038] As a supplementary explanation, the battery cell 200 is also provided with a negative current collector, and the shell 100 also contains electrolyte, the negative current collector of the battery cell 200 is electrically connected with the shell 100, and the positive current collector 210 is electrically connected with the positive pole 311 of the circuit board 300 through the electric connection part 321, so that the shell 100 itself and the positive pole 311 respectively serve as the negative pole and the positive pole of the battery.

[0039] Further, the positive current collector 210 includes a positive pole lug 211 and a positive lead-out part 212, the positive pole lug 211 is arranged on the battery cell 200, the positive lead-out part 212 is electrically connected with the positive pole lug 211 and can lead out the positive pole of the battery cell 200 to the outside of the shell 100, the positive lead-out part 212 is electrically connected with the electric connection part 321, so as to realize the electrical connection between the electric connection part 321 and the positive pole lug 211 of the battery cell 200; the negative current collector includes a negative pole lug, which is arranged on the battery cell 200 and is electrically connected with the shell 100.

[0040] Optionally, the material of the battery cell 200 can be selected from lithium cobaltate (LiCoO2), lithium manganate (LiMn2O4), lithium iron phosphate (LiFePO4), ternary material (LiNi x Co y Mn 1-x-y O2), lithium nickel cobalt aluminum oxide (LiNi 0.8 Co 0.15 Al 0.05 O2, NCA), lithium-rich manganese-based material (xLi2MnO3·(1-x)LiMO2), etc.

[0041] Please refer to Figures 1 to 2In one embodiment, the shell 100 is a cylindrical cavity structure, the first opening 121 is arranged at one end of the cylindrical shell 100, and the circuit board 300 is arranged at the end of the shell 100 provided with the first opening 121 and is electrically connected with the positive current collector 210 through the first opening 121.

[0042] Optionally, the electric connection part 321 can be arranged through the first opening 121 and electrically connected with the positive current collector 210 of the battery cell 200 in the first accommodating cavity 111, and the positive current collector 210 of the battery cell 200 can also be arranged through the first opening 121 and electrically connected with the electric connection part 321 of the circuit board 300, which is not limited here; in some feasible embodiments, the electric connection part 321 and the positive current collector 210 of the battery cell 200 can also be arranged through the first opening 121 to be electrically connected with each other, which is not described here.

[0043] Please refer to Figure 3 In one embodiment, the electric connection part 321 includes an elastic probe made of brass and plated with gold on the surface, and the probe pressure is set to be between 0.5N and 5N, so that the electric connection part 321 can not only be electrically connected with the positive current collector 210, but also can prevent damage caused by hard contact between the electric connection part 321 and the positive current collector 210.

[0044] Further, the second surface 320 of the circuit board 300 is also provided with various electronic components, including but not limited to control chips, voltage detection circuits, current detection circuits, switching elements, temperature sensors, peripheral circuit elements, signal display elements, etc.

[0045] Specifically, the control chip integrates multiple protection function logics to monitor and control battery parameters; the voltage detection circuit is composed of a resistance voltage division network to convert battery voltage signals for the control chip to detect; the current detection circuit contains a sampling resistor and a signal amplification circuit to collect and amplify current signals for the control chip; the switching element is selected as a MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor, abbreviated as Metal-Oxide Field Effect Transistor) to control the on-off of the battery charging and discharging circuit; the temperature sensor is used to monitor the battery temperature and convert the temperature into an electrical signal to the control chip; the peripheral circuit elements include capacitors, resistors, diodes, etc., to provide power supply, filtering, signal isolation, etc.; the signal display element is used to display the working state indication of the circuit board 300, and a SMD LED display lamp is preferably used as the signal display element.

[0046] Further, the positive pole 311 is fixed to the first surface 310 of the circuit board 300 by metal welding.

[0047] Optionally, the material of the positive pole 311 can be stainless steel, iron, nickel, alloy steel, etc.

[0048] Please refer toFigures 1 to 3 In one embodiment, the battery further includes a protective cover 400, which is disposed on the housing 100 and has a second accommodating cavity 410 and a second opening 420. The circuit board 300 is located in the second accommodating cavity 410, and the position of the positive terminal 311 corresponds to the position of the second opening 420.

[0049] The protective cover 400 can provide a certain degree of protection for the circuit board 300 located in the second accommodating cavity 410, preventing external objects from bumping and damaging the circuit board 300. The positive terminal 311 located on the first surface 310 of the circuit board 300 can be led out to the outside of the protective cover 400 through the second opening 420 of the protective cover 400, so as to realize the charging and discharging function of the battery cell 200 through the positive terminal 311.

[0050] Optionally, the positive electrode post 311 can be inside the second opening 420 or protrude from the second opening 420, which is not specifically limited here; preferably, the positive electrode post 311 protrudes from the second opening 420 and is disposed outside the protective cover 400 so as to facilitate the lead-out of the positive electrode.

[0051] In the first embodiment of this application, the protective cover 400 can also provide a certain limiting effect for the circuit board 300, preventing the circuit board 300 from moving at will and affecting the electrical connection effect between the electrical connection part 321 and the positive current collector 210 of the battery cell 200; the second and third embodiments of this application use other methods to limit the circuit board 300, please refer to the following.

[0052] Furthermore, the protective cover 400 is a semi-enclosed structure that runs vertically through the top and bottom. The protective cover 400 is located on the side of the housing 100 where the first opening 121 is provided, so as to surround the circuit board 300.

[0053] Alternatively, the material of the protective cover 400 can be plastic, carbon fiber, ABS (acrylonitrile-butadiene-styrene copolymer), PC (polycarbonate), PP (polypropylene), PA (polyamide, commonly known as nylon), metal, etc., without specific limitations.

[0054] Figure 5 and Figure 6 The assembly methods of the battery in two different embodiments of this application (i.e., the second embodiment and the third embodiment) are shown respectively. Please continue to refer to the following text.

[0055] Please see Figure 5 In one embodiment, the battery further includes a limiting member 500, which is disposed in the housing 100 and located in the second accommodating cavity 410, and the limiting member 500 abuts against the first surface 310.

[0056] The limiting piece 500 is arranged on the shell 100 and can abut against the first surface 310 of the circuit board 300 to prevent the circuit board 300 from moving randomly in the second accommodating cavity 410 and affecting the electrical connection effect between the electrical connection part 321 and the positive current collector 210 of the battery cell 200.

[0057] Please refer to Figure 5 In one embodiment, the limiting piece 500 includes a connecting part 510, a sleeve 520, and a limiting part 530. The connecting part 510 is arranged at one end of the sleeve 520, the limiting part 530 is arranged at the other end of the sleeve 520, the connecting part 510 is connected with the shell 100, the sleeve 520 is sleeved on the outer side wall of the circuit board 300, and the limiting part 530 abuts against the first surface 310.

[0058] The connecting part 510 is arranged at one end of the sleeve 520 and connected with the shell 100 to fix the limiting piece 500. The sleeve 520 is sleeved on the outer side wall of the circuit board 300, and the limiting part 530 abuts against the first surface 310 of the circuit board 300 to wrap and fix the circuit board 300, further preventing the circuit board 300 from moving randomly in the second accommodating cavity 410 and affecting the electrical connection effect between the electrical connection part 321 and the positive current collector 210 of the battery cell 200.

[0059] Please refer to Figure 5 In one embodiment, the connecting part 510 includes a connecting ring, the inner ring wall of the connecting ring is arranged at one end of the sleeve 520, the limiting part 530 includes a limiting ring, the outer ring wall of the limiting ring is arranged at the other end of the sleeve 520 away from the connecting ring, the inner ring wall of the limiting ring surrounds to form a first window 531, and the positive pole 311 passes through the first window 531 and the second opening 420 in sequence.

[0060] The connecting ring is used to connect the sleeve 520 and the shell 100, the connecting area is larger and the connection effect is more reliable. The outer ring wall of the limiting ring is arranged at the other end of the sleeve 520 away from the connecting ring, the abutting area between the limiting ring and the circuit board 300 is larger, thereby further improving the limiting effect on the circuit board 300. The positive pole 311 can pass through the first window 531 and the second opening 420 in sequence. In this way, the charging and discharging function of the positive pole 311 is not affected, and the limiting effect on the circuit board 300 is more reliable.

[0061] Further, the inner ring wall of the connecting ring is arranged at one end of the sleeve 520, and the outer ring wall of the limiting ring is arranged at the other end of the sleeve 520, so that the limiting piece 500 has a stepped structure. The shape of the stepped structure matches the shape of the inner wall of the protective cover 400, so that the protective cover 400 can be connected with the limiting piece 500, thereby realizing the assembly between the protective cover 400 and the limiting piece 500.

[0062] In one embodiment, the circuit board 300 is fixed with the limiting member 500 by means of soldering.

[0063] Optionally, the limiting member 500 can be made of metal materials such as rust steel, iron, and aluminum.

[0064] Referring to Figure 6 In one embodiment, the battery further includes a mounting member 600, which is arranged on the shell 100 and is assembled with the protective cover 400.

[0065] The mounting member 600 on the shell 100 can be assembled with the protective cover 400, thereby realizing the assembly between the protective cover 400 and the shell 100.

[0066] Referring to Figure 6 In one embodiment, the mounting member 600 includes a mounting ring 610 and a mounting portion 620. The mounting ring 610 is arranged on the shell 100, and an inner ring wall of the mounting ring 610 is arranged to form a second window 611 corresponding to the position of the first opening 121. The circuit board 300 is located on the side of the mounting ring 610 away from the shell 100, and the electrically connecting portion 321 and at least one of the positive current collectors 210 pass through the second window 611 to electrically connect the electrically connecting portion 321 and the positive current collectors 210. The mounting portion 620 is arranged on the mounting ring 610 and is assembled with the protective cover 400.

[0067] The second window 611 of the mounting ring 610 corresponds to the position of the first opening 121. In this way, the second window 611 can be used for the electrically connecting portion 321 and at least one of the positive current collectors 210 to pass through, so as to realize the electrical connection between the electrically connecting portion 321 and the positive current collectors 210. The mounting portion 620 on the mounting ring 610 is assembled with the protective cover 400, so as to mount the protective cover 400 on the shell 100. In this way, the electrical connection effect between the electrically connecting portion 321 and the positive current collectors 210 is not affected, and the mounting reliability between the protective cover 400 and the shell 100 is ensured.

[0068] Referring to Figure 7 In one embodiment, the mounting portion 620 includes a clamping protrusion 621 arranged on the outer ring wall of the mounting ring 610. The inner side wall of the second accommodating cavity 410 is arranged with an annular groove 411. The inner side wall of the second accommodating cavity 410 is further arranged with a mounting groove 412 located on the side of the annular groove 411 facing the shell 100. The mounting groove 412 is in communication with the annular groove 411, and the clamping protrusion 621 can enter and exit the annular groove 411 through the mounting groove 412.

[0069] The clamping protrusion 621 on the outer wall of the mounting ring 610 can enter the annular groove 411 through the mounting slot 412 of the inner side wall of the second accommodating cavity 410, and then the mounting ring 610 is rotated to make the clamping protrusion 621 abut against the groove wall of the annular groove 411, so that the assembly of the protective cover 400 and the shell 100 is realized; when it is needed to disassemble the protective cover 400 from the shell 100, the mounting ring 610 is rotated so that the position of the clamping protrusion 621 corresponds to the position of the mounting slot 412, at this time, the clamping protrusion 621 can be taken out from the annular groove 411 through the mounting slot 412, so that the protective cover 400 is disassembled from the shell 100; in this way, the installation reliability between the protective cover 400 and the shell 100 is ensured, and at the same time, the disassembly between the protective cover 400 and the shell 100 is facilitated, and the overall assembly process of the battery is simplified.

[0070] Please refer to Figure 7 In an embodiment, the bottom wall of the second accommodating cavity 410 is further provided with an assembly slot 413, the bottom wall of the assembly slot 413 is communicated with the second opening 420, and the assembly slot 413 is used for mounting the circuit board 300.

[0071] Further, the shape of the assembly slot 413 matches the shape of the circuit board 300, so as to prevent the circuit board 300 from moving in the assembly slot 413.

[0072] Further, the shape of the assembly slot 413 is different from the shape of the circuit board 300, so as to prevent the circuit board 300 from rotating in the assembly slot 413.

[0073] Please refer to Figure 8 In an embodiment, the shell 100 comprises a mounting shell 110 and a cover 120, the mounting shell 110 is provided with a first accommodating cavity 111, and the cover 120 is provided with a first opening 121 and is assembled with the mounting shell 110.

[0074] The cover 120 is assembled with the mounting shell 110 to form the shell 100, in this way, the mounting shell 110 and the cover 120 can be separately processed and produced, and then the mounting shell 110 and the cover 120 which are processed and produced are assembled, so that the production efficiency is improved and the production cost is reduced.

[0075] In an embodiment, the cover 120 and the mounting shell 110 are connected by laser welding.

[0076] Please refer to Figure 8 In an embodiment, the mounting shell 110 is further provided with a pressure relief portion 112, and the pressure relief portion 112 is used for pressure relief in the first accommodating cavity 111.

[0077] When the internal pressure of the first accommodating cavity 111 exceeds a set threshold, the pressure relief portion 112 can timely discharge the medium in the first accommodating cavity 111, prevent the installation shell 110 from exploding or leaking due to the excessively high internal pressure, and ensure the use safety of the battery.

[0078] Further, the pressure relief portion 112 comprises a pressure relief valve, which is arranged on the side of the installation shell 110 away from the first opening 121.

[0079] Specifically, the battery in the above embodiments is a lithium battery.

[0080] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

[0081] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A battery, characterized by, The battery comprises: a shell having a first accommodating cavity and a first opening in communication; an electric core arranged in the first accommodating cavity and provided with a positive current collector; a circuit board arranged outside the shell and having opposite first and second surfaces, the first surface being provided with a positive pole and arranged away from the shell, the second surface being provided with an electric connection part and arranged towards the shell, the positive pole being electrically connected with the electric connection part, and at least one of the electric connection part and the positive current collector being arranged through the first opening to electrically connect the electric connection part with the positive current collector.

2. The battery of claim 1, wherein, The battery further comprises a protective cover arranged in the shell and having a second accommodating cavity and a second opening, the circuit board being arranged in the second accommodating cavity, and the positive pole being arranged at a position corresponding to the position of the second opening.

3. The battery of claim 2, wherein, The battery further comprises a limiting member arranged in the shell and located in the second accommodating cavity, and abutting against the first surface.

4. The battery of claim 3, wherein, The limiting member comprises a connecting part, a sleeve and a limiting part, the connecting part being arranged at one end of the sleeve, the limiting part being arranged at the other end of the sleeve, the connecting part being connected with the shell, the sleeve being sleeved on the outer sidewall of the circuit board, and the limiting part abutting against the first surface.

5. The battery of claim 4, wherein, The connecting part comprises a connecting ring, the inner ring wall of the connecting ring being arranged at one end of the sleeve, the limiting part comprises a limiting ring, the outer ring wall of the limiting ring being arranged at the other end of the sleeve away from the connecting ring, the inner ring wall of the limiting ring being arranged to form a first window, and the positive pole being arranged through the first window and the second opening in sequence.

6. The battery of claim 2, wherein, The battery further comprises a mounting member arranged in the shell and matched with the protective cover.

7. The battery of claim 6, wherein, The mounting member comprises a mounting ring and a mounting part, the mounting ring being arranged in the shell, the inner ring wall of the mounting ring being arranged to form a second window corresponding to the position of the first opening, the circuit board being located on the side of the mounting ring away from the shell, at least one of the electric connection part and the positive current collector being arranged through the second window to electrically connect the electric connection part with the positive current collector, and the mounting part being arranged in the mounting ring and matched with the protective cover.

8. The battery of claim 7, wherein, The mounting part comprises a clamping protrusion arranged on the outer ring wall of the mounting ring, the inner sidewall of the second accommodating cavity is arranged with an annular groove, and the inner sidewall of the second accommodating cavity is further provided with a mounting groove located on the side of the annular groove towards the shell, the mounting groove being in communication with the annular groove, and the clamping protrusion being capable of entering and exiting the annular groove through the mounting groove.

9. The battery of claim 1, wherein, The shell comprises a mounting shell having the first accommodating cavity and a cover having the first opening and matched with the mounting shell.

10. The battery of claim 9, wherein, The mounting shell is further provided with a pressure relief part for relieving pressure in the first accommodating cavity.

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