Battery, electric equipment and battery assembly method

Abstract

The invention discloses a battery, electric equipment and an assembly method of the battery, relates to the technical field of batteries, and is used for at least solving the problems of low over-current capability of the battery and high temperature during high-rate charging. The battery comprises a battery cell and a first pole, the battery cell comprises at least one first pole piece and at least one second pole piece which are sequentially and alternately stacked, the first pole penetrates through the battery cell in 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 second pole is electrically connected with the at least one second pole piece. And the first pole is insulated from the at least one second pole piece. And the first pole column is directly and electrically connected with the first pole piece, so that structural members such as tabs do not need to be additionally arranged, and materials of the structural members such as the tabs are saved. And meanwhile, the overcurrent bottleneck (tab) of the battery is eliminated, the current density is uniformly distributed, the overcurrent capability of the battery is improved, and potential safety hazards caused by local overheating are avoided, so that the safety of the battery is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery, an electrical device and a battery assembly method. Background Art

[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 current battery structure, the tab (or electrode tab) is the conductive part that connects the battery cell to the external circuit. It is usually made of metal material and is responsible for guiding the current generated inside the battery to the external load. Due to space limitations and the thickness of the tab itself, its current capacity is weak. When the battery is fast charged at a high rate, the temperature rise of the tab is too high, posing a safety hazard.

[0004] In the prior art, the battery structure has a low current carrying capacity and the temperature is too high during high-rate fast charging. Summary of the invention

[0005] The embodiments of the present invention provide a battery, an electric device and a battery assembly method, which solve the problems of low battery current capacity and high temperature during high rate charging.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

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

[0008] Through the above technology, the first pole is directly electrically connected to the first pole piece, and no additional structure parts such as pole ears are required, which saves materials of structure parts such as pole ears. At the same time, the overcurrent bottleneck (pole ears) of the battery is eliminated, the current density is evenly distributed, the overcurrent capacity of the battery is improved, and the safety hazards caused by local overheating are avoided, thereby improving the safety of the battery.

[0009] In a possible embodiment, the battery includes a second electrode, which penetrates the battery cell along the stacking direction of at least one first electrode sheet and at least one second electrode sheet, is electrically connected to the at least one second electrode sheet, and is insulated from the at least one first electrode sheet.

[0010] In a possible embodiment, a first column hole is provided on the first pole piece, a second column hole is provided on the second pole piece, the first pole is passed through the first column hole and the second column hole, the portion of the first pole located in the first column hole is electrically connected to the first pole piece, and the portion of the first pole located in the second column hole is insulated from the second pole piece.

[0011] In a possible implementation, the area of ​​the second column hole is greater than the area of ​​the first column hole, and an insulating gap exists between a portion of the first pole located in the second column hole and the second pole piece.

[0012] In a possible embodiment, a third column hole is provided on the first pole piece, a fourth column hole is provided on the second pole piece, the second pole is passed through the third column hole and the fourth column hole, the portion of the second pole located in the third column hole is insulated from the first pole piece, and the portion of the second pole located in the fourth column hole is electrically connected to the second pole piece.

[0013] In a possible implementation, the area of ​​the third column hole is greater than the area of ​​the fourth column hole, and an insulating gap exists between a portion of the second pole located in the third column hole and the first pole piece.

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

[0015] In a possible embodiment, the battery includes a shell, the shell includes a accommodating cavity with an opening on one side, the battery cell is accommodated in the accommodating cavity, the shell also includes a top wall, the top wall is provided with a first through hole and a second through hole at intervals, the first pole is passed through the first through hole, and the second pole is passed through the second through hole.

[0016] In a possible implementation, the first pole includes a first pole head, the first pole head is located on a side of the top wall away from the accommodating cavity, and the battery includes a first seal, the first seal is arranged between the first pole head and the top wall and around the first through hole.

[0017] In a possible implementation, the battery includes a first fastener, which is disposed on a side of the top wall away from the first column head and is fixedly connected to the pole.

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

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

[0020] In a possible implementation, the shell includes a side wall connected to the top wall, the battery includes an insulating film, and the insulating film is located between the side wall and the battery cell along a direction perpendicular to the stacking direction of the first pole sheet and the second pole sheet.

[0021] In a possible implementation, the battery includes a second insulating member, and the second insulating member is spaced apart from the first insulating member and is disposed on both sides of the battery cell.

[0022] In a possible implementation manner, the shell further includes a bottom plate, the bottom plate covers the opening, and the bottom plate is connected to the side peripheral wall.

[0023] In a possible implementation, the battery includes a third insulating member, the third insulating member is located on a side of the top wall away from the battery cell, and the third insulating member is disposed between the column head and the top wall.

[0024] In a possible implementation, the battery includes an explosion-proof valve, which is disposed on the housing and passes through the top wall, and is spaced apart from the first through hole and the second through hole.

[0025] In a possible implementation, the battery includes a liquid injection hole, which is opened on the shell and connected to the accommodating cavity, and the liquid injection hole is spaced apart from the first through hole and the second through hole.

[0026] In a second aspect, an electrical device is provided, comprising a battery provided by any one of the embodiments in the first aspect.

[0027] In a third aspect, a battery assembly method is provided, the assembly method comprising:

[0028] A first pole is provided, and at least one first pole piece and at least one second pole piece are alternately sleeved on the first pole in sequence, and at least one first pole piece is electrically connected to the first pole, and at least one second pole piece is insulated from the first pole.

[0029] In a possible embodiment, the assembly method also includes providing a second pole, alternately sleeved at least one first pole piece and at least one second pole piece on the second pole in sequence, and insulating at least one first pole piece from the second pole, and electrically connecting at least one second pole piece to the second pole.

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

[0031] Figure 1 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0032] Figure 2 for Figure 1A partial structural schematic diagram of a battery is provided;

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

[0034] Figure 4 for Figure 1 A schematic cross-sectional view of a battery is provided;

[0035] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0036] Figure 6 for Figure 1 A schematic cross-sectional view of a partial structure of a battery is provided;

[0037] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle.

[0038] Reference numerals: 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-housing; 41-opening; 42-accommodating cavity; 43-top wall; 431-first through hole; 432-second through hole; 44-side peripheral wall; 45-bottom plate;

[0043] 5- first seal;

[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 invention are described in detail below with reference to the accompanying drawings.

[0049] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0052] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0053] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of variation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0054] like Figure 1 and Figure 2As shown, the present application provides a battery 100, the battery 100 includes a battery cell 1 and a first pole 2, wherein the battery cell 1 includes at least one first pole sheet 11 and at least one second pole sheet 12 alternately and stacked in sequence, the first pole sheet 2 penetrates the battery cell along the direction in which the first pole sheet 11 and the second pole sheet 12 are stacked, and the first pole sheet 2 is electrically connected to the at least one first pole sheet 11.

[0055] Through the above technology, the first pole 2 is directly electrically connected to the first pole piece 11, and no additional structure parts such as pole ears are required, which saves materials of structure parts such as pole ears. At the same time, the current is conducted from the battery cell 1 to the outside through the first pole 2, which can even out the current density, improve the battery's overcurrent capacity, avoid safety hazards caused by local overheating, and thus improve the safety of the battery 100.

[0056] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, and before describing the embodiments of the present application in detail, the application scenarios of the embodiments of the present application are first described.

[0057] The present application provides an electrical device, which includes an electronic device such as a battery 100. Specifically, the electrical device includes but is not limited to electronic products, vehicles, power tools, household appliances, portable devices, outdoor equipment, medical equipment, etc.

[0058] Specifically, means of transportation include but are not limited to vehicles, bicycles, motorcycles, etc.; power tools include but are not limited to electric drills, electric saws, etc.; household appliances include but are not limited to vacuum cleaners, sweeping robots, air conditioners, refrigerators, etc.; portable devices include but are not limited to portable power banks, portable speakers, drones, etc.; outdoor equipment includes but is not limited to mobile power supplies, camping lights, etc.; medical equipment includes but is not limited to heart rate monitors, etc.

[0059] Among them, the vehicle can be an electric vehicle that uses electricity as energy; the vehicle can also be a hybrid vehicle that uses electricity and other energy at the same time; the vehicle can also be an electric energy bus, electric energy truck, electric energy logistics vehicle, electric energy sedan, electric energy SUV, electric energy unmanned vehicle, etc.

[0060] Continue to see Figure 1 and Figure 2 In a possible embodiment, the battery 100 includes a second pole 3, which passes through the battery cell 1 along the stacking direction of at least one first pole piece 11 and at least one second pole piece 12, and the second pole 3 is electrically connected to 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 3 is directly electrically connected to the second pole piece 12, and no additional structure parts such as pole ears are required, which saves materials of structure parts such as pole ears. At the same time, the current is conducted from the battery cell 1 to the outside through the second pole 3, which can even out the current density, improve the overcurrent capacity of the battery 100, avoid the safety hazard caused by local overheating, and thus improve the safety of the battery 100.

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

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

[0064] In a possible implementation, the number of the first pole piece 11 and the second pole piece 12 is multiple, and the first pole piece 11 and the second pole piece 12 are alternately arranged. It should be noted that the battery 100 provided in the present application also includes multiple diaphragms 13, and one diaphragm 13 is arranged between the first pole piece 11 and the second pole piece 12. The diaphragm 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 diaphragm 13 is provided with through holes for the first pole 2 and the second pole 3 to pass through. The diameter of the through holes is larger than the diameters of the first pole 2 and the second pole 3 . The diaphragm 13 does not contact the first pole 2 and the second pole 3 .

[0066] like Figure 3 and Figure 4 As shown, in a possible embodiment, a first column hole 111 is provided on the first pole piece 11, a second column hole 121 is provided on the second pole piece 12, the first pole 2 is passed through the first column hole 111 and the second column hole 121, the portion of the first pole 2 located in the first column hole 111 is electrically connected to the first pole piece 11, and the portion of the first pole 2 located in the second column hole 121 is insulated from the second pole piece 12.

[0067] Through the above arrangement, the first pole 2 is inserted into 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. At the same time, the first pole 2 is located inside the battery cell 1, which can also reduce the space occupied by the first pole 2.

[0068] At the same time, it is also convenient to maintain the first pole 2. During maintenance, it is only necessary to take the first pole 2 out of the first pole hole 111 and the second pole hole 121 for maintenance.

[0069] In a possible implementation, the area of ​​the second column hole 121 is greater than the area of ​​the first column hole 111, and an insulating gap is provided between the portion of the first pole 2 located in the second column hole 121 and the second pole piece 12. The insulation between the first pole 2 and the second pole piece 12 is achieved through a physical structure, thereby enhancing safety and reliability.

[0070] In a possible embodiment, a third column hole 112 is provided on the first pole piece 11, a fourth column hole 122 is provided on the second pole piece 12, the second pole 3 is passed through the third column hole 112 and the fourth column hole 122, the portion of the second pole 3 located in the third column hole 112 is insulated from the first pole piece 11, and the portion of the second pole 3 located in the fourth column hole 122 is electrically connected to the second pole piece 12.

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

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

[0073] In a possible implementation, the area of ​​the third column hole 112 is greater than the area of ​​the fourth column hole 122, and an insulating gap is provided between the portion of the second pole 3 located in the third column hole 112 and the first pole piece 11. The insulation between the second pole and the first pole piece 11 is achieved through a physical structure, thereby enhancing safety and reliability.

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

[0075] The first pole 2 and the first pole piece 11 can be connected together by the conductive adhesive, so that the connection between the first pole 2 and the first pole piece 11 is stable, thereby improving reliability. At the same time, the conductive adhesive fixes the first pole 2 and the first pole piece 11 and provides electrical connection between the first pole 2 and the first pole piece 11.

[0076] The second pole 3 and the second pole piece 12 can be connected together by the conductive adhesive, so that the connection between the second pole 3 and the second pole piece 12 is stable, thereby improving reliability. At the same time, the conductive adhesive fixes the second pole 3 and the second pole piece 12 and provides electrical connection between the second pole 3 and the second pole piece 12.

[0077] In a possible implementation, the first pole 2 is connected to the first pole piece 11 by interference fit, and the second pole 3 is connected to the second pole piece 12 by interference fit. The interference fit connection can stabilize the connection between the first pole 2 and the first pole piece 11, and can also stabilize the connection between the second pole 3 and the second pole piece 12.

[0078] Combination Figures 3 to 7 As shown, in a possible embodiment, the battery 100 includes a shell 4, the shell 4 includes a accommodating cavity 42 with an opening 41 on one side, the battery cell 1 is accommodated in the accommodating cavity 42, the shell 4 also includes a top wall 43, and the top wall 43 is provided with a first through hole 431 and a second through hole 432 at intervals, the first pole 2 is passed through the first through hole 431, and the second pole 3 is passed through the second through hole 432.

[0079] The shell 4 provides physical protection for the internal battery cell 1 to prevent external physical impact, friction or other environmental factors from causing damage to the battery cell 1. At the same time, the shell 4 provides structural support to keep the various components of the battery 100 (such as the battery cell 1, the pole, etc.) in a stable position during use to prevent the displacement of the components due to vibration or impact.

[0080] In a possible implementation, the housing 4 may be prepared by integral stamping.

[0081] In the present application, there is no need to set a cover plate, which can reduce the welding area of ​​the battery 100 and thus improve the safety of the battery 100.

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

[0084] The bottom plate 45 covers the opening 41 , which can effectively seal the interior of the battery 100 to prevent the intrusion of dust, moisture and other external environmental factors, and provide a stable working environment for the battery cell 1 , thereby enabling the battery 100 to operate stably and improving the safety of the battery 100 .

[0085] The battery cell 1 can be installed in the accommodating cavity 42 through the opening 41 for easy operation. When the battery 100 fails, the bottom plate 45 can be disassembled to maintain the battery 100 or the internal parts of the battery 100 can be recycled.

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

[0087] The first seal 5 is located between the first column 21 and the top wall 43, providing a sealing condition for the first through hole 431 for installing the first battery cell 1, and preventing the electrolyte or chemical substances inside the battery 100 from leaking into the external environment. The first seal 5 can protect the environment around the battery 100 from potential pollution and damage. At the same time, the seal can prevent moisture, dust and other external contaminants from entering the battery 100, thereby providing a stable environment for the battery cell 1 to work.

[0088] In a possible implementation, the first seal 5 also has an insulating property. The first seal 5 can separate the first pole 2 from the top wall 43 , provide insulation, and reduce the risk of a 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, which is located on a side of the top wall 43 away from the accommodating cavity 42, and the battery 100 includes a second seal, which is arranged between the second pole head 31 and the top wall 43 and around the second through hole 432.

[0090] The functions and beneficial effects of the second sealing member may refer to the functions and effects of the first sealing member 5 , and will not be elaborated here.

[0091] Exemplarily, the first sealing member 5 or the second sealing member may be a sealing pad, a sealing film or other devices having a sealing function.

[0092] Continue to see Figures 3 to 7 As shown, in a possible embodiment, 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 column head 21 and is fixedly connected to the pole.

[0093] The first fastener 6 and the first column head 21 are respectively located on both sides of the top wall 43. The first pole 2 can be limited by the clamping action of the first fastener 6 and the first column head 21, so as to fix the first pole 2 to prevent the first positive pole and the second pole piece 12 from being short-circuited when the battery 100 is vibrated by external force, thereby causing a short circuit.

[0094] The first fastener 6 is welded to the first pole 2 when the pole head squeezes the sealing member, so that the sealing ring can be locked and the sealing effect of the sealing member is improved.

[0095] In a possible implementation, the battery 100 includes a second fastener, which is disposed on a side of the top wall 43 away from the second column head 31 and is fixedly connected to the pole.

[0096] The effect of the second fastener on the second pole 3 can be seen from the effect of the first fastener 6 on the first pole 2 .

[0097] In a possible implementation, the battery 100 includes a first insulating member 71, the first insulating member 71 is located between the battery cell 1 and the top wall 43, and the first pole 2 passes through the first insulating member 71, while the second pole 3 passes through the first insulating member 71. The first insulating member 71 provides physical insulation between the battery 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, a groove 711 is provided on the side of the first insulating member 71 away from the top wall 43, and the first fastener 6 is accommodated in the groove 711. The groove 711 facilitates the installation of the first fastener 6, so that the first fastener 6 can be easily positioned during installation. The first insulating member 71 has a limiting effect on the first fastener 6, which can reduce the displacement of the first pole 2 during use, thereby reducing the risk of the first pole 2 contacting the second pole piece 12. Thereby, the safety of the battery 100 is improved.

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

[0100] In a possible implementation, the battery 100 includes a second insulating member 73, which is spaced apart from the first insulating member 71 and disposed on both sides of the battery cell 1. The second insulating member 73 provides physical insulation between the battery cell 1 and the bottom plate 45, which helps reduce the risk of short circuit and ensures the safety and reliability of the battery 100.

[0101] The battery 100 includes an insulating film 72, which is located between the side wall 44 and the battery cell 1 along a direction perpendicular to the stacking of the first pole piece 11 and the second pole piece 12. The insulating film 72 provides physical insulation between the battery cell 1 and the side wall 44 of the housing 4, which helps reduce the risk of short circuit and ensures the safety and reliability of the battery 100.

[0102] During the production process, the insulating film 72 covers the battery cell 1 and is connected to the second insulating member 73 , and they are installed together in the accommodating cavity 42 , which can save steps, simplify the installation and save time.

[0103] In a possible implementation, the battery 100 includes a third insulating member 74 . The third insulating member 74 is located on a side of the top wall 43 away from the battery cell 1 . The third insulating member 74 is disposed between the first column head 21 and the top wall 43 .

[0104] The third insulating member 74 is disposed between the column head and the top wall 43, which can provide physical insulation between the column head and the top wall 43, thereby reducing the risk of short circuit. At the same time, the third insulating member 74 can reduce the exposed area of ​​the column head, thereby reducing the risk of leakage caused by the column head contacting other conductive objects outside.

[0105] In a possible implementation, the battery 100 includes an explosion-proof valve 8 , which is disposed on the housing 4 and passes through the top wall 43 , and is spaced apart from the first through hole 431 and the second through hole 432 .

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

[0107] In a possible implementation, the battery 100 includes a liquid injection hole 9 , which is opened on the shell 4 , connected to the accommodating cavity 42 , and spaced apart from the first through hole 431 and the second through hole 432 .

[0108] The injection hole 9 is used to inject electrolyte into the accommodating chamber 42, which facilitates the injection of electrolyte and helps the battery 100 maintain a suitable electrolyte level during use.

[0109] In a possible implementation, the liquid injection hole 9 may be disposed 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 a battery 100, the assembly method comprising:

[0111] Provide a first pole 2, and alternately sleeve at least one first pole piece 11 and at least one second pole piece 12 on the first pole 2, and make at least one first pole piece 11 electrically connected to the first pole 2, and at least one second pole piece 12 insulated from the first pole 2. In this way, pole piece installation is facilitated.

[0112] At the same time, such installation can improve the space utilization inside the battery 100 , and 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 complex connection structures, reduce production costs, and improve production efficiency.

[0114] In a possible embodiment, the assembly method also includes providing a second pole 3, alternately sleeved at least one first pole piece 11 and at least one second pole piece 12 on the second pole 3 in sequence, and insulating at least one first pole piece 11 from the second pole 3, and electrically connecting at least one second pole piece 12 to the second pole 3.

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

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

[0117] In a possible implementation, after the first insulating member 71 is sleeved on the first pole 2 and the second pole 3, the first fastener 6 and the second fastener may also be sleeved on the first pole 2 and the second pole 3 to fix the first insulating member 71 and fix the first pole 2 and the second pole 3 at the same time.

[0118] After all the devices in the accommodating chamber 42 are assembled, the bottom plate 45 is closed. The electrolyte is injected from the injection hole 9 provided on the housing 4.

[0119] Through the above-mentioned assembly method, 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, in the process of implementing the present application for which protection is claimed, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprise" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0121] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0122] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A battery (100), characterized in that: include: A battery cell (1) comprising at least one first pole piece (11) and at least one second pole piece (12) which are alternately and stacked in sequence; A first pole (2), the first pole (2) passing through the battery cell (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 (2) being electrically connected to the at least one first pole piece (11), and the first pole (2) being insulated from the at least one second pole piece (12).

2. The battery (100) according to claim 1, characterized in that: The battery (100) comprises: A second pole (3), wherein the second pole (3) penetrates the battery cell (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 (3) is electrically connected to the at least one second pole piece (12), and the second pole (3) is 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 (2) is passed through the first column hole (111) and the second column hole (121); the portion of the first pole (2) located in the first column hole (111) is electrically connected to the first pole piece (11), and the portion of the first pole (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 an insulating gap exists between a portion of the first pole (2) located in the second column hole (121) and the second pole piece (12).

5. The battery (100) according to claim 2, characterized in that: 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 passed through the third column hole (112) and the fourth column hole (122); the portion of the second pole (3) located in the third column hole (112) is insulated from the first pole piece (11), and the portion of the second pole (3) located in the fourth column hole (122) is electrically connected to 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 an insulating gap exists between a portion of the second pole (3) located in the third column hole (112) and the first pole piece (11).

7. The battery (100) according to claim 2, characterized in that: The battery (100) comprises: Conductive glue, the first pole (2) and the at least one first pole piece (11) are electrically connected through the conductive glue; the second pole (3) and the at least one second pole piece (12) are electrically connected through the conductive glue.

8. The battery (100) according to any one of claims 2 to 7, characterized in that: The battery (100) comprises: The shell (4) comprises a housing cavity (42) with an opening (41) on one side, and the battery cell (1) is accommodated in the housing cavity (42); the shell (4) also comprises a top wall (43), and a first through hole (431) and a second through hole (432) are arranged on the top wall (43) at intervals, and the first pole (2) is passed through the first through hole (431), and the second pole (3) is passed through the second through hole (432).

9. The battery (100) according to claim 8, characterized in that: The first pole (2) comprises a first pole head (21), wherein the first pole head (21) is located on a side of the top wall (43) away from the accommodating cavity (42); The battery (100) comprises a first sealing member (5), wherein the first sealing member (5) is arranged between the first column head (21) and the top wall (43), and is arranged around the first through hole (431).

10. The battery (100) according to claim 9, characterized in that: The battery (100) comprises: A first fastener (6), the first fastener (6) is arranged on a side of the top wall (43) away from the first column head (21) and is fixedly connected to the pole.

11. The battery (100) according to claim 10, characterized in that: The battery (100) comprises: A first insulating member (71), wherein the first insulating member (71) is located between the battery core (1) and the top wall (43), and the first pole (2) passes through the first insulating member (71).

12. The battery (100) according to claim 11, characterized in that: A groove (711) is provided on a side of the first insulating member (71) facing away from the top wall (43), and the first fastening member (6) is accommodated in the groove (711).

13. The battery (100) according to claim 12, characterized in that: The housing (4) comprises a side peripheral wall (44) connected to the top wall (43); the battery (100) comprises: An insulating film (72) is located between the side peripheral wall (44) and the battery cell (1) along a direction perpendicular to the stacking direction of the first pole piece (11) and the second pole piece (12).

14. The battery (100) according to claim 13, characterized in that: The battery (100) comprises: The second insulating member (73) is arranged at two sides of the battery core (1) at a distance from the first insulating member (71).

15. The battery (100) according to claim 14, characterized in that: The housing (4) further comprises: A bottom plate (45), the bottom plate (45) covers the opening (41), and the bottom plate (45) is connected to the side peripheral wall (44).

16. The battery (100) according to claim 9, characterized in that: The battery (100) comprises: A third insulating member (74), the third insulating member (74) is located on a side of the top wall (43) away from the battery core (1), and the third insulating member (74) is arranged between the first column head (21) and the top wall (43).

17. The battery (100) according to claim 8, characterized in that: The battery (100) comprises: An explosion-proof valve (8), the explosion-proof valve (8) is arranged on the shell (4), and the explosion-proof valve (8) passes through the top wall (43), and the explosion-proof valve (8) is arranged at intervals from the first through hole (431) and the second through hole (432).

18. The battery (100) according to claim 8, characterized in that: The battery (100) comprises: A liquid injection hole (9), the liquid injection hole (9) is opened on the shell (4), the liquid injection hole (9) is connected to the accommodating cavity (42), and the liquid injection hole (9) is spaced apart from the first through hole (431) and the second through hole (432).

19. An electrical equipment, characterized in that: A battery (100) comprising any one of claims 1 to 18.

20. A method for assembling a battery (100), characterized in that: include: Providing a first pole (2); At least one first pole piece (11) and at least one second pole piece (12) are alternately sleeved on the first pole column (2) in sequence, and the at least one first pole piece (11) is electrically connected to the first pole column (2), and the at least one second pole piece (12) is insulated from the first pole column (2).

21. The assembly method according to claim 20, characterized in that: Also includes: Providing a second pole (3); At least one first pole piece (11) and at least one second pole piece (12) are alternately sleeved on the second pole column (3) in sequence, and the at least one first pole piece (11) is insulated from the second pole column (3), and the at least one second pole piece (12) is electrically connected to the second pole column (3).

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