A battery, an electric device, and a method of assembling a battery

Abstract

The application discloses a battery, an electric device and an assembling method of the battery, relates to the technical field of batteries, and aims to at least solve the problems of low overcurrent capacity of the battery and high temperature during high-rate charging. The battery comprises a battery cell and a first pole, wherein the battery cell comprises at least one first pole piece and at least one second pole piece which are alternately and sequentially arranged and stacked, the first pole penetrates the battery cell along the stacking direction of the at least one first pole piece and the at least one second pole piece, the first pole is electrically connected with the at least one first pole piece, and the first pole is insulated from the at least one second pole piece. The first pole is directly electrically connected with the first pole piece, and no additional structure such as a tab is needed, thereby saving the material of the structure such as the tab. Meanwhile, the overcurrent bottleneck (tab) of the battery is eliminated, the current density is evenly distributed, the overcurrent capacity of the battery is improved, the safety hazard caused by local overheating is avoided, and the safety of the battery is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery, a power consumption device and a battery assembly method. BACKGROUND

[0002] A battery is a device that converts chemical energy into electrical energy and is widely used in various electronic devices, vehicles and energy storage systems.

[0003] In the existing battery structure, the tab (also known as the electrode lug) is a conductive part that connects the battery cell to the external circuit, usually made of metal material, responsible for guiding the current generated inside the battery to the external load. The overcurrent capacity of the tab is weak due to the space limitation and the thickness of the tab itself. When the battery is fast charged at a large rate, the temperature of the tab rises too high, which poses a safety hazard.

[0004] In the prior art, the overcurrent capacity of the battery structure is low, and the temperature is too high when fast charging at a large rate. SUMMARY

[0005] Embodiments of the present application provide a battery, a power consumption device and a battery assembly method, which solve the problems of low overcurrent capacity of the battery and high temperature when fast charging at a large rate.

[0006] To achieve the above-mentioned purpose, embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a battery is provided, the battery comprising a battery cell and a first pole, wherein the battery cell comprises at least one first pole piece and at least one second pole piece arranged alternately and stacked in sequence, the first pole penetrates the battery cell along the stacking direction of the at least one first pole piece and the at least one second pole piece, the first pole is electrically connected to the at least one first pole piece, and the first pole is insulated from the at least one second pole piece.

[0008] Through the above-mentioned technology, the first pole is directly electrically connected to the first pole piece, without the need for additional structures such as tabs, thereby saving the material of the tabs and other structural components. At the same time, the overcurrent bottleneck (tab) of the battery is eliminated, the current density is evenly distributed, the overcurrent capacity of the battery is improved, the safety hazard caused by local overheating is avoided, and the safety of the battery is improved.

[0009] In a possible implementation, the battery comprises a second pole, the second pole penetrates the battery cell along the stacking direction of the at least one first pole piece and the at least one second pole piece, the second pole is electrically connected to the at least one second pole piece, and the second pole is insulated from the at least one first pole piece.

[0010] In a possible implementation, the first pole piece is provided with a first column hole, the second pole piece is provided with a second column hole, the first pole column is arranged in the first column hole and the second column hole, and a part of the first pole column located in the first column hole is electrically connected with the first pole piece, and a part of the first pole column located in the second column hole is insulated from the second pole piece.

[0011] In a possible implementation, the second column hole has an area greater than that of the first column hole, and a part of the first pole column located in the second column hole has an insulating gap with the second pole piece.

[0012] In a possible implementation, the first pole piece is provided with a third column hole, the second pole piece is provided with a fourth column hole, the second pole column is arranged in the third column hole and the fourth column hole, and a part of the second pole column located in the third column hole is insulated from the first pole piece, and a part of the second pole column located in the fourth column hole is electrically connected with the second pole piece.

[0013] In a possible implementation, the third column hole has an area greater than that of the fourth column hole, and a part of the second pole column located in the third column hole has an insulating gap with the first pole piece.

[0014] In a possible implementation, the battery comprises conductive glue, the first pole column is electrically connected with the at least one first pole piece through the conductive glue, and the second pole column is electrically connected with the at least one second pole piece through the conductive glue.

[0015] In a possible implementation, the battery comprises a shell, the shell comprises a one-side-open accommodating cavity, the battery cell is accommodated in the accommodating cavity, and the shell further comprises a top wall, the top wall is provided with a first through hole and a second through hole at intervals, the first pole column is arranged in the first through hole, and the second pole column is arranged in the second through hole.

[0016] In a possible implementation, the first pole column comprises a first column head, the first column head is located on a side of the top wall away from the accommodating cavity, the battery comprises a first sealing member, the first sealing member is arranged between the first column head and the top wall and surrounds the first through hole.

[0017] In a possible implementation, the battery comprises a first fastener, the first fastener is arranged on a side of the top wall away from the first column head and is fixedly connected with the pole column.

[0018] In a possible implementation, the battery comprises a first insulating member, the first insulating member is located between the battery cell and the top wall, and the first pole column penetrates through the first insulating member.

[0019] In a possible implementation, a side of the first insulating member away from the top wall is provided with a groove, and the first fastener is accommodated in the groove.

[0020] In a possible implementation, the shell comprises a side wall connected with the top wall, and the battery comprises an insulating film, which is arranged between the side wall and the battery cell in a direction in which the first pole piece and the second pole piece are stacked vertically.

[0021] In a possible implementation, the battery comprises a second insulating member, which is arranged on two sides of the battery cell and spaced apart from the first insulating member.

[0022] In a possible implementation, the shell further comprises a bottom plate, the bottom plate covers the opening, and the bottom plate is connected with the side wall.

[0023] In a possible implementation, the battery comprises a third insulating member, which is arranged on a side of the top wall away from the battery cell and between the post head and the top wall.

[0024] In a possible implementation, the battery comprises an explosion-proof valve, which is arranged on the shell and penetrates the top wall, and the explosion-proof valve is arranged spaced apart from the first through hole and the second through hole.

[0025] In a possible implementation, the battery comprises a liquid injection hole, which is arranged on the shell and communicates with the accommodating cavity, and the liquid injection hole is arranged spaced apart from the first through hole and the second through hole.

[0026] In a possible implementation, the battery comprises an explosion-proof valve, which is arranged on the shell and penetrates the top wall, and the explosion-proof valve is arranged spaced apart from the first through hole and the second through hole.

[0027] In a possible implementation, the battery comprises an explosion-proof valve, which is arranged on the shell and penetrates the top wall, and the explosion-proof valve is arranged spaced apart from the first through hole and the second through hole.

[0028] The first pole post is provided, and the at least one first pole piece and the at least one second pole piece are sequentially and alternately sleeved on the first pole post, and the at least one first pole piece is electrically connected with the first pole post, and the at least one second pole piece is insulated from the first pole post.

[0029] In a possible implementation, the assembly method further comprises providing a second pole post, sequentially and alternately sleeving the at least one first pole piece and the at least one second pole piece on the second pole post, and insulating the at least one first pole piece from the second pole post and electrically connecting the at least one second pole piece with the second pole post.

[0030] It should be noted that the technical effects brought by any implementation of the second aspect and the third aspect can be referred to the technical effects brought by the corresponding implementation of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A structural schematic diagram of a battery provided by the embodiments of the present application;

[0032] Figure 2 A structural schematic diagram of a battery provided by the embodiments of the present application; Figure 1A partial structural schematic diagram of the battery provided;

[0033] Figure 3 For Figure 1 An exploded schematic diagram of the battery provided;

[0034] Figure 4 For Figure 1 A cross-sectional schematic diagram of the battery provided;

[0035] Figure 5 For Figure 4 An enlarged schematic diagram of A in the middle;

[0036] Figure 6 For Figure 1 A cross-sectional schematic diagram of a partial structure of the battery provided;

[0037] Figure 7 For Figure 6 An enlarged schematic diagram of B in the middle.

[0038] Reference signs: 100 - battery;

[0039] 1 - battery cell; 11 - first pole piece; 111 - first column hole; 112 - third column hole; 12 - second pole piece; 121 - second column hole; 122 - fourth column hole; 13 - diaphragm;

[0040] 2 - first pole; 21 - first column head;

[0041] 3 - second pole; 31 - second column head;

[0042] 4 - shell; 41 - opening; 42 - accommodating cavity; 43 - top wall; 431 - first through hole; 432 - second through hole; 44 - side wall; 45 - bottom plate;

[0043] 5 - first sealing member;

[0044] 6 - first fastener;

[0045] 71 - first insulating member; 711 - groove; 72 - insulating film; 73 - second insulating member; 74 - third insulating member;

[0046] 8 - explosion-proof valve;

[0047] 9 - liquid injection hole. DETAILED DESCRIPTION

[0048] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0049] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0050] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified and limited, the term "a plurality of" means two or more.

[0051] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. In addition, when describing pipelines or channels, the terms "connected" and "connected" used in the application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0052] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present concepts in a concrete manner. The term "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to a single embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0053] As used herein, "about", "approximately", or "around" includes the stated value and the average value within an acceptable range of deviation from the particular value, as determined by a person of ordinary skill in the art taking into account the measurement being discussed and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0054] As Figure 1 and Figure 2As shown, the battery 100 provided by the present application includes the battery cell 1 and the first pole 2, wherein the battery cell 1 includes at least one first pole piece 11 and at least one second pole piece 12 arranged alternately and stacked in sequence, the first pole 2 penetrates the battery cell along the direction in which the first pole piece 11 and the second pole piece 12 are stacked, and the first pole 2 is electrically connected with the at least one first pole piece 11.

[0055] Through the above technology, the first pole 2 is directly electrically connected with the first pole piece 11, without the need of additionally arranging a structure such as a pole tab, thereby saving the material of the structure such as the pole tab. Meanwhile, the current is conducted from the battery cell 1 to the outside through the first pole 2, which can uniform the current density and improve the overcurrent capacity of the battery, thereby avoiding the safety hazard caused by local overheating and improving the safety of the battery 100.

[0056] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, and before the embodiments of the present application are described in detail, the application scenarios of the embodiments of the present application are first introduced.

[0057] The present application provides a kind of electric equipment, and electric equipment includes electronic equipment such as battery 100, specifically, electric equipment includes but is not limited to electronic product, vehicle, electric tool, household appliance, portable device, outdoor equipment, medical equipment etc.

[0058] Specifically, vehicle includes but is not limited to vehicle, bicycle, motorcycle etc.;Electric tool includes but is not limited to electric drill, electric saw etc.;Household appliance includes but is not limited to dust collector, sweeping robot, air conditioner, refrigerator etc.;Portable device includes but is not limited to portable power bank, portable sound box, unmanned aerial vehicle etc.;Outdoor equipment includes but is not limited to mobile power supply, camping lamp etc.;Medical equipment includes but is not limited to heart rate detector etc.

[0059] Among them, vehicle can be electric vehicle using electric power as energy;Vehicle can also be hybrid vehicle using electric power and other energy simultaneously;Vehicle can also be electric power energy bus, electric power energy truck, electric power energy logistics vehicle, electric power energy car, electric power energy SUV, electric power energy unmanned vehicle, etc.

[0060] Continuing to refer to Figure 1 and Figure 2 In a possible implementation, the battery 100 includes the second pole 3, the second pole 3 penetrates the battery cell 1 along the direction in which the at least one first pole piece 11 and the at least one second pole piece 12 are stacked, the second pole 3 is electrically connected with the at least one second pole piece 12, and the second pole 3 is insulated from the at least one first pole piece 11.

[0061] Through the above technology, the second pole post 3 is directly electrically connected with the second pole piece 12, without the need to additionally set a structure such as a tab, thereby saving the material of the structure such as the tab. Meanwhile, the current is conducted from the battery cell 1 to the outside through the second pole post 3, which can uniform the current density and improve the overcurrent capacity of the battery 100, thereby avoiding the safety hazard caused by local overheating and improving the safety of the battery 100.

[0062] In a possible implementation, the first pole post 2 is a positive pole post, and the second pole post 3 is a negative pole post.

[0063] In a possible implementation, the first pole post 2 is a negative pole post, and the second pole post 3 is a positive pole post.

[0064] In a possible implementation, a plurality of the first pole pieces 11 and the second pole pieces 12 are provided, and the first pole pieces 11 and the second pole pieces 12 are alternately arranged. It should be noted that the battery 100 provided in the present application further includes a plurality of separators 13, and one separator 13 is arranged between the first pole piece 11 and the second pole piece 12. The separator 13 can isolate the positive pole piece and the negative pole piece to prevent short circuit, and at the same time, help to improve the ion conduction efficiency, thereby enhancing the overall performance of the battery 100.

[0065] The separator 13 is provided with a through hole for the first pole post 2 and the second pole post 3 to pass through, and the diameter of the through hole is greater than the diameter of the first pole post 2 and the second pole post 3, and the separator 13 does not contact the first pole post 2 and the second pole post 3.

[0066] As shown in FIGS. 1, 2 and 3, in a possible implementation, the first pole post 2 is arranged to pass through the first pole piece 11 and the second pole piece 12, and the first pole post 2 is electrically connected with the first pole piece 11 and insulated from the second pole piece 12. Figure 3 Figure 4 As shown in FIGS. 1, 2 and 3, in a possible implementation, the first pole post 2 is arranged to pass through the first pole piece 11 and the second pole piece 12, and the first pole post 2 is electrically connected with the first pole piece 11 and insulated from the second pole piece 12.

[0067] Through the above arrangement, the first pole post 2 passes through the first pole hole 111 and the second pole hole 121, which can avoid short circuit and form a stable ion channel, thereby improving the safety and stability of the battery 100 during operation. Meanwhile, the first pole post 2 is arranged inside the battery cell 1, which can also reduce the space occupation of the first pole post 2.

[0068] Meanwhile, it is also convenient to maintain the first pole post 2, and during maintenance, the first pole post 2 only needs to be taken out from the first pole hole 111 and the second pole hole 121 for maintenance.

[0069] ​In a possible implementation, the area of the second post hole 121 is larger than the area of the first post hole 111, and the first pole 2 has an insulation gap between the part of the second post hole 121 and the second pole piece 12. The insulation of the first pole 2 and the second pole piece 12 is realized through the physical structure, thereby enhancing the safety and reliability.

[0070] In a possible implementation, the first pole piece 11 is provided with a third post hole 112, the second pole piece 12 is provided with a fourth post hole 122, the second pole 3 passes through the third post hole 112 and the fourth post hole 122, and the second pole 3 is insulated from the first pole piece 11 at the part of the third post hole 112 and is electrically connected to the second pole piece 12 at the part of the fourth post hole 122.

[0071] Through the above arrangement, the second pole 3 passes through the third post hole 112 and the fourth post hole 122, which can avoid short circuit and form a stable ion channel, thereby improving the safety and stability of the battery 100 during operation. At the same time, the second pole 3 is located inside the cell 1, which can also reduce the space occupation of the second pole 3.

[0072] At the same time, it is also convenient to maintain the second pole 3. During maintenance, the second pole 3 only needs to be taken out of the third post hole 112 and the fourth post hole 122 for maintenance.

[0073] In a possible implementation, the area of the third post hole 112 is larger than the area of the fourth post hole 122, and the second pole 3 has an insulation gap between the part of the third post hole 112 and the first pole piece 11. The insulation of the second pole and the first pole piece 11 is realized through the physical structure, thereby enhancing the safety and reliability.

[0074] In a possible implementation, the battery 100 includes conductive glue, the first pole 2 is electrically connected to at least one first pole piece 11 through the conductive glue, and the second pole 3 is electrically connected to at least one second pole piece 12 through the conductive glue.

[0075] The conductive glue can connect the first pole 2 and the first pole piece 11 together, so that the first pole 2 and the first pole piece 11 are stably connected, thereby improving the reliability. At the same time, the conductive glue fixes the first pole 2 and the first pole piece 11 and also provides electrical connection between the first pole 2 and the first pole piece 11.

[0076] The conductive glue can connect the second pole 3 and the second pole piece 12 together, so that the second pole 3 and the second pole piece 12 are stably connected, thereby improving the reliability. At the same time, the conductive glue fixes the second pole 3 and the second pole piece 12 and also provides electrical connection between the second pole 3 and the second pole piece 12.

[0077] In a possible implementation, the first pole post 2 is connected with the first pole tab 11 in an interference fit, and the second pole post 3 is connected with the second pole tab 12 in an interference fit. The interference fit can stabilize the connection between the first pole post 2 and the first pole tab 11, and also stabilize the connection between the second pole post 3 and the second pole tab 12.

[0078] In combination Figures 3 to 7 In a possible implementation, as shown in the drawings, the battery 100 includes a housing 4, the housing 4 includes a receiving cavity 42 with an opening 41 on one side, the battery cell 1 is received in the receiving cavity 42, and the housing 4 further includes a top wall 43, the top wall 43 is provided with a first through hole 431 and a second through hole 432 at intervals, the first pole post 2 is arranged through the first through hole 431, and the second pole post 3 is arranged through the second through hole 432.

[0079] The housing 4 provides physical protection for the internal battery cell 1, preventing external physical impact, friction, or other environmental factors from damaging the battery cell 1. At the same time, the housing 4 provides structural support, so that the various components of the battery 100 (such as the battery cell 1, the pole posts, etc.) maintain a stable position during use, preventing displacement of the components due to vibration or impact.

[0080] In a possible implementation, the housing 4 can be prepared by one-piece stamping.

[0081] In this application, the cover plate does not need to be provided, which can reduce the welding area of the battery 100, thereby improving the safety of the battery 100.

[0082] In a possible implementation, the housing 4 includes a side peripheral wall 44 connected with the top wall 43, the side peripheral wall 44 is connected with the top wall 43 to provide structural support and protection for the internal battery cell 1.

[0083] In a possible implementation, the housing 4 further includes a bottom plate 45, the bottom plate 45 covers the opening 41, and the bottom plate 45 is connected with the side peripheral wall 44.

[0084] The bottom plate 45 covers the opening 41, which can effectively seal the inside of the battery 100, preventing the invasion of dust, moisture, and other external environmental factors. It provides a stable working environment for the battery cell 1, so that the battery 100 operates stably and improves the safety of the battery 100.

[0085] The battery cell 1 can be installed in the receiving cavity 42 through the opening 41, which is convenient to operate. When the battery 100 fails, the bottom plate 45 can be removed for maintenance of the battery 100 or recycling of internal components of the battery 100 by removing the bottom plate 45.

[0086] In a possible implementation, the first pole 2 includes a first pole head 21, the first pole head 21 is located on the side of the top wall 43 away from the accommodating cavity 42, and the battery 100 includes a first sealing member 5, the first sealing member 5 is arranged between the first pole head 21 and the top wall 43 and surrounds the first through hole 431.

[0087] The first sealing member 5 is located between the first pole head 21 and the top wall 43, provides a sealing condition for the first through hole 431 of the first electrode core 1, and prevents electrolyte or chemical substances inside the battery 100 from leaking to the external environment. The first sealing member 5 can protect the environment around the battery 100 and prevent potential pollution and damage. At the same time, the sealing member can prevent moisture, dust and other external pollutants from entering the inside of the battery 100, thereby providing a stable environment for the work of the electrode core 1.

[0088] In a possible implementation, the first sealing member 5 also has an insulation performance, the first sealing member 5 can separate the first pole 2 from the top wall 43, provide an insulation performance, and reduce the risk of short circuit between the first pole head 21 and the top wall 43.

[0089] In a possible implementation, the second pole 3 includes a second pole head 31, the second pole head 31 is located on the side of the top wall 43 away from the accommodating cavity 42, and the battery 100 includes a second sealing member, the second sealing member is arranged between the second pole head 31 and the top wall 43 and surrounds the second through hole 432.

[0090] The second sealing member has the same effects and advantages as the first sealing member 5, and details are not repeated here.

[0091] For example, the first sealing member 5 or the second sealing member can be a sealing rubber, a sealing film or other devices with a sealing effect.

[0092] Continuing to refer to Figures 3 to 7 In a possible implementation, the battery 100 includes a first fastener 6 (see Figure 5 ), the first fastener 6 is arranged on the side of the top wall 43 away from the first pole head 21 and is fixedly connected with the pole.

[0093] The first fastener 6 and the first pole head 21 are located on the two sides of the top wall 43 respectively, and through the clamping action of the first fastener 6 and the first pole head 21, the first pole 2 can be limited and fixed, so as to prevent the first positive pole from being short-circuited with the second pole piece 12 and causing short circuit in the case that the battery 100 is shaken by external force.

[0094] The first fastener 6 is welded with the first pole 2 in the case that the pole head extrudes the sealing member, so as to lock the sealing ring and improve the sealing effect of the sealing member.

[0095] In a possible implementation, the battery 100 comprises a second fastener, which is arranged on the side of the top wall 43 away from the second post head 31 and is fixedly connected with the pole post.

[0096] The effect of the second fastener on the second pole post 3 can be referred to the effect of the first fastener 6 on the first pole post 2.

[0097] In a possible implementation, the battery 100 comprises a first insulating member 71, which is arranged between the cell 1 and the top wall 43, and the first pole post 2 and the second pole post 3 pass through the first insulating member 71. The first insulating member 71 provides physical insulation between the cell 1 and the top wall 43, which helps to reduce the risk of short circuit and ensure the safety and reliability of the battery 100.

[0098] In a possible implementation, the first insulating member 71 is provided with a recess 711 on the side away from the top wall 43, and the first fastener 6 is accommodated in the recess 711. The recess 711 facilitates the installation of the first fastener 6, so that the first fastener 6 is easy to be positioned when installed. The first insulating member 71 has a limiting effect on the first fastener 6, which can reduce the displacement of the first pole post 2 during use, thereby reducing the risk of contact between the first pole post 2 and the second pole tab 12. Thus, the safety of the battery 100 is improved.

[0099] In a possible implementation, the second insulating member 73 is provided with a recess 711 on the side away from the top wall 43, and the second fastener is accommodated in the recess 711. The effect and beneficial effects of the recess 711 on the second fastener can be referred to the effect and beneficial effects of the recess 711 on the first fastener 6.

[0100] In a possible implementation, the battery 100 comprises a second insulating member 73, which is arranged on both sides of the cell 1 in a spaced manner with the first insulating member 71. The second insulating member 73 provides physical insulation between the cell 1 and the bottom plate 45, which helps to reduce the risk of short circuit and ensure the safety and reliability of the battery 100.

[0101] The battery 100 comprises an insulating film 72, which is arranged between the side peripheral wall 44 and the cell 1 along the direction perpendicular to the stacking of the first pole tab 11 and the second pole tab 12. The insulating film 72 provides physical insulation between the cell 1 and the side peripheral wall 44 of the shell 4, which helps to reduce the risk of short circuit and ensure the safety and reliability of the battery 100.

[0102] In the production process, the insulating film 72 is connected together with the second insulating member 73 after wrapping the cell 1, and is installed in the accommodating cavity 42 together, which can save steps and make the installation simple and time-saving.

[0103] In a possible implementation, the battery 100 comprises a third insulating piece 74, which is located on the side of the top wall 43 away from the battery cell 1 and is arranged between the first post head 21 and the top wall 43.

[0104] The third insulating piece 74 is arranged between the post head and the top wall 43, which can provide physical insulation between the post head and the top wall 43 and reduce the risk of short circuit. Meanwhile, the third insulating piece 74 can reduce the exposed area of the post head, thereby reducing the risk of electric leakage caused by contact between the post head and other conductive objects in the external environment.

[0105] In a possible implementation, the battery 100 comprises an explosion-proof valve 8, which is arranged on the shell 4 and penetrates the top wall 43, and the explosion-proof valve 8 is arranged separately from the first through hole 431 and the second through hole 432.

[0106] The explosion-proof valve 8 can protect the battery 100 during charging or discharging of the battery 100 and prevent the battery 100 from being cracked or exploded due to excessive internal pressure. Therefore, the explosion-proof valve 8 can increase the safety of the battery 100.

[0107] In a possible implementation, the battery 100 comprises a liquid injection hole 9, which is arranged on the shell 4 and communicates with the accommodating cavity 42, and the liquid injection hole 9 is arranged separately from the first through hole 431 and the second through hole 432.

[0108] The liquid injection hole 9 is used for injecting electrolyte into the accommodating cavity 42, which facilitates the injection of electrolyte. This facilitates the maintenance of a proper electrolyte level during use of the battery 100.

[0109] In a possible implementation, the liquid injection hole 9 can be arranged on the top wall 43, the side peripheral wall 44, or the bottom plate 45.

[0110] The present application also provides an assembly method of the battery 100, which comprises the following steps.

[0111] The first pole 2 is provided, at least one first pole piece 11 and at least one second pole piece 12 are sequentially and alternately sleeved on the first pole 2, and the at least one first pole piece 11 is electrically connected to the first pole 2, and the at least one second pole piece 12 is insulated from the first pole 2. In this way, the pole piece is installed.

[0112] Meanwhile, such installation can improve the space utilization rate inside the battery 100, and thus more first pole pieces 11 and second pole pieces can be arranged in the same space, thereby improving the capacity of the battery 100.

[0113] Such an assembly method can also simplify the manufacturing process of the battery 100, reduce the need for a complex connection structure, reduce production costs, and improve production efficiency.

[0114] In a possible implementation, the assembling method further comprises providing the second pole post 3, sequentially and alternately sleeving the at least one first pole piece 11 and the at least one second pole piece 12 on the second pole post 3, and insulating the at least one first pole piece 11 from the second pole post 3 and electrically connecting the at least one second pole piece 12 to the second pole post 3.

[0115] When the at least one first pole piece 11 and the at least one second pole piece 12 are sequentially and alternately sleeved on the first pole post 2, the at least one first pole piece 11 and the at least one second pole piece 12 can also be sequentially and alternately sleeved on the second pole post 3. In this way, the first pole piece 11 and the second pole piece 12 are sleeved on the first pole post 2 and the second pole post 3 at the same time, which can simplify the operation process, increase the assembling speed, and thus improve the production speed of the battery 100.

[0116] Before the at least one first pole piece 11 and the at least one second pole piece 12 are sequentially and alternately sleeved on the first pole post 2 and the second pole post 3, the first pole post 2 and the second pole post 3 can be first sleeved on the shell 4, and the first insulating piece 71 can be sleeved on the first pole post 2 and the second pole post 3.

[0117] In a possible implementation, after the first insulating piece 71 is sleeved on the first pole post 2 and the second pole post 3, the first fastener 6 and the second fastener can also be sleeved on the first pole post 2 and the second pole post 3 to fix the first insulating piece 71 and fix the first pole post 2 and the second pole post 3.

[0118] After the devices in the accommodation cavity 42 are assembled, the bottom plate 45 is closed. The electrolyte is injected from the liquid injection hole 9 arranged on the shell 4.

[0119] Through the above assembling method, the welding points can be reduced, the circuit structure can be simplified, and the space utilization rate inside the battery 100 can be improved.

[0120] Although the present application is described herein in conjunction with various embodiments, other variations of the disclosed embodiments can be understood and effected by those skilled in the art in the art in the light of the foregoing description, the attached drawings and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and the indefinite article "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. Measures described in mutually different dependent claims can be combined and produce desirable results.

[0121] Although the present application has been described in connection with certain specific features and embodiments thereof, it is to be understood that it is not to be limited to the features and embodiments specifically described, but rather can be practiced with modification and alteration, which can be apparent to those skilled in the art having the benefit of this disclosure. Accordingly, it is intended to embrace all such alterations, modifications, and variations that fall within the scope of the present application. It is intended that the application embrace all alternatives, modifications and variations falling within the scope of the claims appended hereto.

[0122] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by 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 battery (100) characterized in that, The battery (100) comprises: a shell (4) comprising a containing cavity (42) with an open side (41) and a top wall (43) provided with a first through hole (431); an electric core (1) contained in the containing cavity (42), the electric core comprising at least one first pole piece (11) and at least one second pole piece (12) arranged alternately and stacked in sequence; a first pole column (2) penetrating the electric core (1) along the stacking direction of the at least one first pole piece (11) and the at least one second pole piece (12), the first pole column (2) being directly electrically connected with the at least one first pole piece (11) without additional pole tabs, and the first pole column (2) being insulated from the at least one second pole piece (12); the first pole column (2) is provided in the first through hole (431), and the first pole column (2) comprises a first column head (21) located on the side of the top wall (43) away from the containing cavity (42); the battery (100) comprises: a first fastener (6) provided on the side of the top wall (43) away from the first column head (21) and fixedly connected with the pole column; a first insulating member (71) located between the electric core (1) and the top wall (43), and the first pole column (2) penetrates the first insulating member (71); the side of the first insulating member (71) away from the top wall (43) is provided with a groove (711), and the first fastener (6) is contained in the groove (711).

2. The battery (100) according to claim 1, characterized in that The battery (100) comprises: a second pole column (3) penetrating the electric core (1) along the stacking direction of the at least one first pole piece (11) and the at least one second pole piece (12), the second pole column (3) being directly electrically connected with the at least one second pole piece (12) without additional pole tabs, and the second pole column (3) being insulated from the at least one first pole piece (11).

3. The battery (100) according to claim 2, characterized in that The first pole piece (11) is provided with a first column hole (111), the second pole piece (12) is provided with a second column hole (121), and the first pole column (2) is provided in the first column hole (111) and the second column hole (121); the part of the first pole column (2) located in the first column hole (111) is electrically connected with the first pole piece (11), and the part of the first pole column (2) located in the second column hole (121) is insulated from the second pole piece (12).

4. The battery (100) according to claim 3, characterized in that The area of the second column hole (121) is greater than the area of the first column hole (111), and there is an insulating gap between the part of the first pole column (2) located in the second column hole (121) and the second pole piece (12).

5. The battery (100) of claim 2, wherein, The first pole piece (11) is provided with a third column hole (112), the second pole piece (12) is provided with a fourth column hole (122), and the second pole (3) is arranged in the third column hole (112) and the fourth column hole (122); the part of the second pole (3) located in the third column hole (112) is insulated from the first pole piece (11), and the part of the second pole (3) located in the fourth column hole (122) is electrically connected with the second pole piece (12).

6. The battery (100) according to claim 5, characterized in that The area of the third column hole (112) is greater than the area of the fourth column hole (122), and there is an insulation gap between the part of the second pole (3) located in the third column hole (112) and the first pole piece (11).

7. The battery (100) of claim 2, wherein, The battery (100) comprises: The first pole (2) and the at least one first pole piece (11) are electrically connected by the conductive glue, and the second pole (3) and the at least one second pole piece (12) are electrically connected by the conductive glue.

8. The battery (100) according to any one of claims 2-7, characterized in that, The top wall (43) is further provided with a second through hole (432) spaced from the first through hole (431), and the second pole (3) is arranged in the second through hole (432).

9. The battery (100) according to claim 8, characterized in that, The battery (100) comprises a first sealing member (5), which is arranged between the first column head (21) and the top wall (43) and surrounds the first through hole (431).

10. The battery (100) of claim 1, wherein, The shell (4) comprises a side peripheral wall (44) connected with the top wall (43); the battery (100) comprises: An insulating film (72) is arranged between the side peripheral wall (44) and the battery cell (1) in a direction perpendicular to the stacking direction of the first pole piece (11) and the second pole piece (12).

11. The battery (100) according to claim 10, characterized in that The battery (100) comprises: A second insulating member (73) is arranged on both sides of the battery cell (1) and spaced from the first insulating member (71).

12. The battery (100) of claim 11, characterized in that The shell (4) further comprises: A bottom plate (45) covers the opening (41), and the bottom plate (45) is connected with the side peripheral wall (44).

13. The battery (100) of claim 9, wherein, The battery (100) comprises: A third insulating member (74) is arranged between the first column head (21) and the top wall (43) on a side of the top wall (43) away from the battery cell (1).

14. The battery (100) of claim 8, wherein, The battery (100) comprises: An explosion-proof valve (8) is arranged on the shell (4) and penetrates the top wall (43), and the explosion-proof valve (8) is arranged spaced from the first through hole (431) and the second through hole (432).

15. The battery (100) of claim 8, wherein, The battery (100) comprises: An injection hole (9) is arranged on the shell (4) and communicates with the accommodating cavity (42), and the injection hole (9) is arranged spaced from the first through hole (431) and the second through hole (432).

16. An electrical device, characterized by The battery (100) according to any one of claims 1-15.

17. A method of assembling a battery (100) as claimed in any one of claims 1 to 15, characterised in that, Comprising: providing a first pole (2); sequentially and alternately sleeving at least one first pole piece (11) and at least one second pole piece (12) on the first pole (2), and directly electrically connecting the at least one first pole piece (11) with the first pole (2) without additionally setting a pole tab, and insulating the at least one second pole piece (12) from the first pole (2).

18. The method of assembling of claim 17, wherein, Further comprising: providing a second pole (3); sequentially and alternately sleeving at least one first pole piece (11) and at least one second pole piece (12) on the second pole (3), and insulating the at least one first pole piece (11) from the second pole (3), and directly electrically connecting the at least one second pole piece (12) with the second pole (3) without additionally setting a pole tab.

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