Battery and method for manufacturing the same

Abstract

The present invention provides a battery and a method for manufacturing the same that facilitates the connection of tabs and poles. [Solution] The battery pack includes a battery cell having a first pole and a second pole at each of its opposing ends, a plurality of tabs including a first tab and a second tab, and a box body including a housing and a first box cover. The housing includes a fixedly installed cylindrical body and a partition plate, the partition plate located inside the cylindrical body and together with the cylindrical body defining a first cavity with one end open, the battery cell is installed inside the first cavity and one end of the battery cell is in contact with the partition plate. The first box cover is installed at one end of the housing and seals the first cavity. Here, a support is installed on the side of the first box cover facing the battery cell, the first tab is connected to the first pole, and the support is in contact with the first tab. Poles are cut into the partition plate, the second tab is located on the side of the partition plate away from the battery cell, the second pole passes through the pole hole and is connected to the second tab.

Description

Technical Field

[0001] This application claims priority based on a Chinese patent application with application number 202411957439.3 filed on December 27, 2024, and an international patent application with application number PCT / CN2025 / 078169 filed on February 20, 2025, and all the contents of the said applications are incorporated herein by reference.

[0002] This application relates to the field of battery technology, specifically to batteries and their manufacturing methods.

Background Art

[0003] Low-voltage (e.g., 12V) battery packs are often designed simply and highly integrated because, based on cost considerations and space constraints, their usage scenarios are not as demanding as those of power batteries.

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, it is difficult to apply a battery cell with current conduction at both ends (e.g., a large cylindrical battery cell with current conduction at both ends) equipped with pole posts and explosion-proof valves at both ends to a low-voltage battery pack. In particular, after the battery cell is placed in the battery box, the difficulty of welding with an integrated bus bar (abbreviated as Cells Contact System, CCS, composed of a flexible circuit board, plastic structural parts, copper-aluminum bars, etc.) increases.

Means for Solving the Problems

[0005] The present invention provides a battery, a battery pack comprising a battery cell having a first pole and a second pole at each of its opposing ends, a plurality of tabs including a first tab and a second tab, and a housing including a housing and a first box cover. The housing includes a fixedly installed cylindrical body and a partition plate, the partition plate located inside the cylindrical body and together with the cylindrical body defining a first cavity with one end open, the battery cell being installed in the first cavity and one end of the battery cell in contact with the partition plate. The first box cover is installed at one end of the housing and seals the first cavity. Here, a support is provided on the side of the first box cover facing the battery cell, the first tab is connected to the first pole, and the support is in contact with the first tab. The partition plate has pole hole openings, the second tab is located on the side of the partition plate away from the battery cell, the second pole passes through the pole hole and is connected to the second tab.

[0006] The present invention further provides a method for manufacturing a battery, the method comprising: a battery cell, on which a first pole and a second pole are installed at each of the opposing ends of the battery cell; and a housing, the housing comprising a fixedly installed cylindrical body and a partition plate, the partition plate being located inside the cylindrical body, the partition plate together with the cylindrical body defining a first cavity with one end open, the partition plate having pole hole holes, the battery cell being installed inside the first cavity, and the second pole being inserted through the pole hole. The invention includes: one end of the battery cell being in contact with the partition plate; a first tab being provided, the first tab being connected to the first pole; a first box cover being provided, with a support portion provided on one side of the first box cover, the first box cover being installed on one end of the housing to seal the first cavity, the support portion being in contact with the first tab; and a second tab being provided, the second tab being fixed to the partition plate on the side away from the first cavity and connected to the second pole. [Effects of the Invention]

[0007] In the battery provided in this invention, one end of the battery cell is brought into contact with a partition plate, so that the first tab is first connected to the first pole column. At this time, the partition plate provides support to the battery cell, causing the first tab to adhere to the first pole column of the battery cell, thereby facilitating connection. Next, the support portion of the first box cover is brought into contact with the first tab, and the second pole column is connected to the second tab. At this time, the support portion of the first box cover provides support to the battery cell, causing the second tab to adhere to the second pole column of the battery cell, thereby facilitating welding and reducing the force on the welded first tab, thereby lowering the probability of fracture at the weld point of the first tab. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram of the battery provided in this application, viewed from a first viewing angle. [Figure 2] This is a schematic exploded view of the battery provided in this application from a second viewing angle (the first sealing adhesive layer and the second sealing adhesive layer are not shown). [Figure 3] This is a schematic diagram of the structure of the box body provided in this application (the first and second box covers are not shown). [Modes for carrying out the invention]

[0009] In the description of this application, unless otherwise explicitly stated or limited, terms such as “connected,” “connected,” and “fixed” should be interpreted broadly, and may include, for example, fixed connections, detachable connections, or integrally formed connections; mechanical connections or electrical connections; direct connections or indirect connections via an intermediate medium; internal communication between two elements; or interaction between two elements. A person skilled in the art will be able to understand the specific meaning of these terms in this application in accordance with the specific circumstances.

[0010] In this application, unless otherwise expressly or limited, when the first feature is "above" or "below" the second feature, this includes both cases where the first and second features are in direct contact and cases where they are not in direct contact but are indirectly in contact through another feature. Furthermore, when the first feature is "above," "above," or "on the top surface" of the second feature, this includes cases where the first feature is directly above or diagonally above the second feature, and the horizontal height of the first feature is greater than the horizontal height of the second feature. When the first feature is "below," "below," or "on the bottom surface" of the second feature, this includes cases where the first feature is directly below or diagonally below the second feature, and the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0011] In this embodiment, directions or positional relationships such as "up," "down," "left," "right," "front," and "back" are based on the directions or positional relationships shown in the drawings. These are for the purpose of facilitating explanation and simplifying operation, and do not imply that the device or element has a specific direction or needs to be configured or operated in a specific direction. Also, terms such as "first," "second," etc., are for distinction purposes and have no special meaning.

[0012] Referring to Figures 1 to 3 as the first embodiment, the embodiment of the present application provides a battery, which is, A battery cell 1 having a first pole and a second pole installed at each of its opposing ends, Multiple tabs, including Tab 12 and Tab 23, The box body 4 includes the enclosure 41 and the first box cover 42.

[0013] The housing 41 includes a fixed cylindrical body 411 and a partition plate 412. The partition plate 412 is located inside the cylindrical body 411 and, together with the cylindrical body 411, defines a first cavity with one end open. The battery cell 1 is installed inside the first cavity, and one end of the battery cell 1 is in contact with the partition plate 412. A first box cover 42 is installed at one end of the housing 41 to seal the first cavity. A support portion 421 is installed on the side of the first box cover 42 facing the battery cell 1, and a first tab 2 is connected to a first pole, with the support portion 421 in contact with the first tab 2. A pole hole 4121 is made in the partition plate 412, and a second tab 3 is located on the side of the partition plate 412 away from the battery cell 1. The second pole passes through the pole hole 4121 and is connected to the second tab 3.

[0014] To make it easier to understand, when the tab and pole are welded together, the tab needs to be pressed against the pole by the welding equipment to ensure that the tab adheres to the pole. After the battery cell 1 is placed in the first cavity, the first tab 2 and the first pole are first welded together by the welding equipment, at which point one end of the battery cell 1, located at the bottom of the cavity, abuts against the partition plate 412, so that the partition plate 412 provides support to the battery cell 1, and the welding equipment can facilitate welding both by pressing the first tab 2 against the first pole to adhere. After the first tab 2 and the first pole column are connected, the second pole column and the second tab 3 are welded together by the welding equipment. At this time, the support portion 421 of the first box cover 42 comes into contact with the first tab 2, providing support force to the battery cell 1. The welding equipment then presses the second tab 3 against the second pole column, facilitating the welding of both tabs. Consequently, the support portion 421 receives a pressing force from the welding equipment, which reduces the probability of fracture at the weld point of the first tab 2.

[0015] To make it easier to understand, the partition plate 412 has pole post holes 4121 through which the second pole passes, and the second tab 3 is located on the side of the partition plate 412 away from the battery cell 1. This allows the second tab 3 and the second pole to be welded outside the first cavity after the battery cell 1 is placed in the first cavity, thereby facilitating both welding operations. Furthermore, when the battery cell 1 is brought into contact with the partition plate 412, the second pole passes through the pole post holes 4121, allowing the end faces of the battery cell 1 to be better bonded to the partition plate 412, thereby improving the support capacity of the partition plate 412 for the battery cell 1.

[0016] Exemplary, the battery of the present invention may include a plurality of battery cells 1, and this battery is a battery pack. The plurality of battery cells 1 may be arranged in an S-shape within the first cavity, thereby reducing the dimensions of the battery pack along the direction in which the battery cells 1 are arranged. The plurality of battery cells 1 may also be arranged linearly within the first cavity, thereby reducing the dimensions of the battery pack perpendicular to the direction in which the battery cells 1 are arranged, and consequently adjusting the dimensions of the battery pack by adjusting the arrangement method of the battery pack. The partition plate 412 is a plate-like structure installed inside the cylindrical body 411, and may be perpendicular to the axial direction of the cylindrical body 411, and the shape of the partition plate 412 may match the shape of the inner surface of the cylindrical body 411. One of the first pole column and the second pole column is the positive pole column, and the other is the negative pole column. The cylindrical body 411 and the partition plate 412 may form the housing 41 by integral molding. The shape of the cylindrical body 411 may be rectangular, circular, or other irregular shape. The support portion 421, by contacting the first tab 2, provides support force to the first tab 2, and consequently, the support portion 421 can provide support force to the battery cell 1. The support portion 421 may have any shape as long as it provides support force to the first tab 2.

[0017] In one embodiment, the partition plate 412 and the cylindrical body 411 further define a second cavity 413 which is open at one end and is independent of the first cavity. The box body 4 further includes a second box cover 43 which is installed at the other end of the housing 41 and seals the second cavity 413, and the second tab 3 is located inside the second cavity 413.

[0018] To make it easier to understand, the partition plate 412 is positioned inside the cylindrical body 411, dividing the space inside the cylindrical body 411 into a first cavity and a second cavity 413. The first cavity is used to house the battery cell 1, and the second cavity 413 is used to house other components of the battery pack, such as the battery management system module 5. Accordingly, the second tab 3 is placed inside the second cavity 413, allowing the second tab 3 to be welded to the second pole post by the second cavity 413. After the second tab 3 and the second pole post are welded, the second box cover 43 seals the second cavity 413, thereby closing off the components inside the second cavity 413.

[0019] In one embodiment, the box body 4 further includes a separating member 44, the separating member 44 is filled into a first cavity, a first housing cavity 441 is installed through the separating member 44, the battery cell 1 is housed in the first housing cavity 441 and conforms to the shape of the first housing cavity 441.

[0020] As can be understood, by matching the shape of the separation member 44 with the shape of the inner surface of the first cavity, the separation member 44 can be fixed within the first cavity. By processing the separation member 44 and the cylindrical body 411 in an integrally formed manner, the separation member 44 can be more stable within the cylindrical body 411, and the processing can be facilitated. By abutting the partition plate 412 against the separation member 44, it is made easier for the first pole to pass through the pole hole 4121 in the partition plate 412, and thus it can be made easier for the first pole to be connected to the second tab 3. By processing the partition plate 412, the separation member 44, and the cylindrical body 411 in an integrally formed manner, the stability of the battery pack can be improved and the processing can be facilitated.

[0021] In one embodiment, the first box cover 42 is hat-shaped, and a second accommodation cavity 422 communicating with the first accommodation cavity 441 is formed in the first box cover 42.

[0022] As can be understood, the first box cover 42 is hat-shaped, the cavity of the hat-shaped structure is the second accommodation cavity 422, and the support portion 421 is located within the second accommodation cavity 422. The second accommodation cavity 422 communicates with the first accommodation cavity 441. Thereby, when the second tab 3 and the second pole are connected, the support portion 421 within the second accommodation cavity 422 can provide a supporting force.

[0023] In one embodiment, a first explosion-proof valve 12 is further installed at each of the opposite ends of the battery cell 1, and the two first explosion-proof valves 12 communicate with the second cavity 413 and the second accommodation cavity 422 respectively. A first passage 45 penetrating through the separation member 44 and the partition plate 412 is further installed in the box body 4. The first passage 45 is independent of the first accommodation cavity 441. The second cavity 413 and the second accommodation cavity 422 communicate with each other through the first passage 45. A second explosion-proof valve 47 is further installed in the box body 4, and the second explosion-proof valve 47 communicates with the second accommodation cavity 422.

[0024] To make it easier to understand, a battery cell 1 (for example, a large cylindrical battery cell with current flowing through both ends) has first explosion-proof valves 12 at each of its opposing ends, and the two first explosion-proof valves 12 communicate with the second cavity 413 and the second housing cavity 422, respectively. If the battery cell 1 experiences thermal runaway, both of the first explosion-proof valves 12 at both ends of the battery cell 1 may vent, and the vented gas enters the second cavity 413 and the second housing cavity 422, respectively. A through-hole is provided in the partition plate 412, and the first explosion-proof valve 12 at one end of the battery cell 1 may be installed in this through-hole, thereby allowing the first explosion-proof valve 12 at one end of the battery cell 1 to communicate with the second cavity 413. The first passage 45 penetrates the separating member 44 and the partition plate 412, thereby allowing the second cavity 413 and the second housing cavity 422 to communicate. The installation of the second explosion-proof valve 47 in the enclosure 4 may also mean that the second explosion-proof valve 47 is located in the first enclosure cover 42. If the battery cell 1 experiences thermal runaway, the gas discharged from the first explosion-proof valve 12 in the second cavity 413 may be discharged from the battery pack in order through the second cavity 413, the first passage 45, the second housing cavity 422, and the second explosion-proof valve 47. The gas discharged from the first explosion-proof valve 12 in the second housing cavity 422 may be discharged outside the battery pack in order through the second housing cavity 422 and the second explosion-proof valve 47. The installation of the second explosion-proof valve 47 in the enclosure 4 may also mean that the second explosion-proof valve 47 is located in the second enclosure cover 43. If the battery cell 1 experiences thermal runaway, the gas discharged from the first explosion-proof valve 12 in the second cavity 413 may be discharged from the battery pack sequentially through the second cavity 413 and the second explosion-proof valve 47, and the gas discharged from the first explosion-proof valve 12 in the second housing cavity 422 may be discharged outside the battery pack sequentially through the second housing cavity 422, the first passage 45, the second cavity 413 and the second explosion-proof valve 47.The installation of the second explosion-proof valve 47 in the box body 4 may mean that the second explosion-proof valve 47 is located in the cylinder body 411. At this time, by installing the first passage 45 at the edge of the separation member 44 and the partition plate 412, the housing 41 will be located on one side of the first passage 45. Also, when the second explosion-proof valve 47 communicates with the second cavity 413 and the second accommodation cavity 422, when the battery cell 1 generates thermal runaway, the gas discharged from the first explosion-proof valve 12 in the second cavity 413 will be discharged from the battery pack through the second cavity 413, the first passage 45, and the second explosion-proof valve 47 in sequence. The gas discharged from the first explosion-proof valve 12 in the second accommodation cavity 422 may be discharged outside the battery pack through the second accommodation cavity 422, the first passage 45, and the second explosion-proof valve 47 in sequence. In this way, when the battery cell 1 generates thermal runaway, the gas discharged from the first explosion-proof valves 12 at both ends thereof can be effectively discharged outside the battery pack.

[0025] In one embodiment, a second passage 46 is further opened in the box body 4. The second passage 46 includes a first sub-section penetrating the side wall of the cylinder body 411 and a second sub-section opened in the separation member 44. The first sub-section communicates with the second sub-section. The second passage 46 is independent of the first accommodation cavity 441 and the first passage 45. The second sub-section communicates with the second accommodation cavity 422 and the outside, or communicates with the second cavity 413 and the outside. The second explosion-proof valve 47 is installed in the cylinder body 411 and communicates with the first sub-section.

[0026] As can be understood, the position of the second passage 46 is set as required. The second passage 46 is located in the middle of the battery pack, and the extending direction of the second passage 46 may be parallel to the axial direction of the battery cell 1. Thereby, the exhaust speed can be improved and the arrangement of the battery cells 1 can be facilitated.

[0027] To make it clearer, the installation of the second explosion-proof valve 47 in the cylindrical body 411 and its communication with the first subsection may also mean that the second explosion-proof valve 47 is installed within the first subsection. If the battery cell 1 experiences thermal runaway, the second subsection may communicate with the second housing cavity 422 and the outside, and the gas discharged from the first explosion-proof valve 12 in the second cavity 413 may be discharged outside the battery pack through the second cavity 413, the first passage 45, the second housing cavity 422, the second subsection and the second explosion-proof valve 47 in that order, while the gas discharged from the first explosion-proof valve 12 in the second housing cavity 422 may be discharged outside the battery pack through the second housing cavity 422, the second subsection and the second explosion-proof valve 47 in that order. Because the second sub-section communicates with the second cavity 413 and the outside, if the battery cell 1 experiences thermal runaway, the gas discharged from the first explosion-proof valve 12 in the second cavity 413 may be discharged from the battery pack sequentially through the second cavity 413, the second sub-section, and the second explosion-proof valve 47, and the gas discharged from the first explosion-proof valve 12 in the second housing cavity 422 may be discharged outside the battery pack sequentially through the second housing cavity 422, the first passage 45, the second cavity 413, the second sub-section, and the second explosion-proof valve 47. Thus, the second explosion-proof valve 47 may be located in the cylindrical body 411, and the first passage 45 may be located in the middle of the battery pack. Because the second sub-section communicates with the second housing cavity 422 and the outside, it is possible to prevent the gas discharged from the first explosion-proof valve 12 from affecting the elements in the first cavity.

[0028] In one embodiment, the first tab 2 is connected to the first pole column, and the support portion 421 is in contact with the connection between the first tab 2 and the first pole column.

[0029] To make it easier to understand, the first tab 2 may be welded to the first pole column, and the support portion 421 abuts against the connection between the first tab 2 and the first pole column, thereby providing support to the connection and reducing the probability of the connection being subjected to force and breaking. The welding point between the first tab 2 and the first pole column is often circular, and the shape of the support portion 421 may be cylindrical to match the welding point.

[0030] In one embodiment, the second tab 3 is integrally installed with the partition plate 412.

[0031] To facilitate welding between the second tab 3 and the second pole post, the second tab 3 may be fixed to the partition plate 412 by heat scribing.

[0032] In one embodiment, the first tab 2 is welded to the first pole column.

[0033] In one embodiment, the second tab 3 is welded to the second pole column.

[0034] In one embodiment, the battery further includes a battery management system module 5, which is installed in a second cavity 413 and electrically connected to the battery cell 1.

[0035] To make it clear, the battery management system module 5 includes a battery management system (BMS), which is primarily used to intelligently manage and maintain each battery cell 1, prevent overcharging and over-discharging of the battery cells 1, extend the service life of the battery cells 1, and monitor the status of the battery cells 1. The battery management system module 5 includes a control module, a data collection wire harness used to collect data from the battery cells 1, an NTC thermistor, and a connecting device used to connect the data collection wire harness to the control module. By installing the battery management system module 5 in the second cavity 413, the battery management system module 5 and the battery cells 1 are isolated, thereby facilitating the installation of the battery cells 1. The data collection wire harness, the NTC thermistor, and the connecting device connecting the data collection wire harness to the control module may be integrated into the partition plate 412, thereby reducing the number of fixing brackets, reducing material usage, and simplifying the battery assembly process.

[0036] In one embodiment, the first box cover 42 is inserted into the first cavity, and a first sealing adhesive layer 6 is placed between the first box cover 42 and the cylindrical body 411.

[0037] To make it easier to understand, the presence of a first sealing adhesive layer 6 between the first box cover 42 and the cylindrical body 411 enables sealing between the first box cover 42 and the cylindrical body 411.

[0038] In one embodiment, the second box cover 43 is inserted into the second cavity 413, and a second sealing adhesive layer 7 is placed between the second box cover 43 and the cylindrical body 411.

[0039] To make it easier to understand, a second sealing adhesive layer 7 is placed between the second box cover 43 and the cylindrical body 411, thereby achieving sealing between the second box cover 43 and the cylindrical body 411.

[0040] In one embodiment, the first box cover 42 is cap-shaped, and a first protrusion 423 is provided on the edge of the first box cover 42, extending toward the cylindrical body 411. The cylindrical body 411, the first box cover 42, and the first protrusion 423 define a first housing groove, and the first sealing adhesive layer 6 is located within the first housing groove.

[0041] To make it easier to understand, the first protrusion 423 extending toward the cylindrical body 411 is provided as a protrusion on the edge of the cap-shaped first box cover 42. After the first box cover 42 is inserted into the cylindrical body 411, a first receiving groove is formed between the first protrusion 423 and the cylindrical body 411, which is used to accommodate the first sealing adhesive layer 6. This reduces the probability of the sealing adhesive leaking into the cylindrical body 411 from between the edge of the first box cover 42 and the cylindrical body 411, ensuring that the sealing adhesive completely fills the first receiving groove and improving the sealing performance between the first box cover 42 and the cylindrical body 411. The side of the first protrusion 423 facing the cylindrical body 411 is aligned with the cylindrical body 411 with a gap.

[0042] In one embodiment, the second box cover 43 is cap-shaped, and a second protrusion 431 extending toward the cylindrical body 411 is provided on the edge of the second box cover 43. The cylindrical body 411, the second box cover 43, and the second protrusion 431 define a second housing groove, and the second sealing adhesive layer 7 is located within the second housing groove.

[0043] To make it easier to understand, the second protrusion 431 extending toward the cylindrical body 411 is provided as a protrusion on the edge of the cap-shaped second box cover 43. After the second box cover 43 is inserted into the cylindrical body 411, a second receiving groove is formed between the second protrusion 431 and the cylindrical body 411, which is used to accommodate the second sealing adhesive layer 7. Consequently, the probability of the sealing adhesive leaking into the cylindrical body 411 from between the edge of the second box cover 43 and the cylindrical body 411 is reduced, ensuring that the sealing adhesive completely fills the second receiving groove and improving the sealing performance between the second box cover 43 and the cylindrical body 411. The side of the second protrusion 431 facing the cylindrical body 411 is aligned with the cylindrical body 411 with a gap.

[0044] In one embodiment, the cylindrical body 411 is further provided with a first position limiting portion 4111 located within a second cavity 413, and the second box cover 43 is in contact with the first position limiting portion 4111.

[0045] To make it easier to understand, the first position limiting portion 4111 is installed in the second cavity 413 and the first position limiting portion 4111 is in contact with the second box cover 43, thereby limiting the position of the second box cover 43 when it is inserted into the second cavity 413, preventing the second box cover 43 from pressing against the elements in the second cavity 413, and facilitating the installation of the second box cover 43. The first position limiting portion 4111 may be installed on the edge of the second cavity 413 in order to contact the second protrusion 431 of the second box cover 43. The number of first position limiting portions 4111 may be set to be multiple, and they may be arranged at equal intervals around the second cavity 413, thereby more effectively limiting the depth to which the second box cover 43 is inserted into the second cavity 413.

[0046] In one embodiment, the edge of the first box cover 42 is in contact with the separating member 44.

[0047] To make it easier to understand, the edge of the first box cover 42 abuts against the separating member 44, thereby restricting the position of the first box cover 42 when it is inserted into the cylindrical body 411, and facilitating the installation of the first box cover 42. The first box cover 42 is cap-shaped, and a second protrusion 431 extending toward the cylindrical body 411 is provided on its edge, so that the second protrusion 431 abuts against the separating member 44, thereby more effectively limiting the depth to which the second box cover 43 is inserted into the second cavity 413.

[0048] In a second aspect, the embodiment of the present application provides a method for manufacturing a battery, and this method for manufacturing a battery is: The step of providing a battery cell 1 having a first pole and a second pole installed at each of its opposing ends, The present invention provides a housing 41, which includes a cylindrical body 411 and a partition plate 412 to which the housing 41 is fixedly installed, the partition plate 412 being located inside the cylindrical body 411, the partition plate 412 together with the cylindrical body 411 defining a first cavity with one end open, a pole hole 4121 being made in the partition plate 412, a battery cell 1 being installed inside the first cavity, a second pole being inserted through the pole hole 4121, and one end of the battery cell 1 being in contact with the partition plate 412, and The steps include providing the first tab 2 and connecting the first tab 2 to the first pole pole, A first box cover 42 is provided, a support portion 421 is installed on one side of the first box cover 42, the first box cover 42 is installed at one end of the housing 41 to seal the first cavity, and the support portion 421 is in contact with the first tab 2, The steps include providing a second tab 3, fixing the second tab 3 to the side of the partition plate 412 away from the first cavity, and connecting it to a second pole column.

[0049] To make it easier to understand, when the battery is manufactured, first, the battery cell 1 is placed in the first cavity, and if a separator member 44 is installed in the first cavity, the battery cell 1 is placed in the first housing cavity 441 within the separator member 44, the second pole is inserted through the pole hole 4121 in the partition plate 412, the end of the battery cell 1 closest to the partition plate 412 abuts against the partition plate 412, at which point the first tab 2 and the first pole are welded together by a welding machine, and the partition plate 412 is subjected to the pressure of the welding machine. Then, the first box cover 42 is placed inside the cylindrical body 411 and connected with sealing adhesive, at which point the support portion 421 of the first box cover 42 abuts against the first tab 2. Next, the second tab 3 and the second pole are welded together by a welding machine, and the first box cover 42 is subjected to the pressure of the welding machine. In order to more stably secure the battery cell 1 within the first housing cavity 441, structural adhesive may be applied to the battery cell 1 and the first housing cavity 441 after the battery cell 1 has been placed in the box 4.

[0050] In one embodiment, the partition plate 412 and the cylindrical body 411 further define a second cavity 413 with one end open, and the second cavity 413 is independent of the first cavity, and the method for manufacturing the battery is as follows: The steps include providing the second box cover 43 and the battery management system module 5, The steps include installing the battery management system module 5 in the second cavity 413 and connecting it to the battery cell 1, The process further includes the step of installing the second box cover 43 on the other end of the housing 41 to seal the second cavity 413.

[0051] To make it understandable, the battery management system module 5 includes a control module, a data collection wire harness used to collect data from the battery cell 1, an NTC thermistor, and a connecting device used to connect the data collection wire harness to the control module. The data collection wire harness for collecting data from the battery cell 1, the NTC thermistor, and the connecting device for connecting the data collection wire harness to the control module may be assembled on the partition plate 412 before the battery cell 1 is placed in the enclosure 4, or after the second tab 3 and the second pole are connected. The control module may be placed in the second cavity 413 after the second tab 3 and the second pole are connected, thereby facilitating the connection of the second tab 3 and the second pole. Finally, the second box cover 43 and the housing 41 are connected to achieve sealing within the enclosure 4. [Explanation of Symbols]

[0052] 1: Battery cell 12: First explosion-proof valve 2: First tab 3: Second tab 4: Box body 41: Cabinet 411: Cylinder 4111: First position restriction section 412: Partition plate 4121: Pole hole 413: Second Cavity 42: Box cover #1 421: Support part 422: Second containment cavity 423: First protrusion 43: Box cover #2 431: Second protrusion 44: Separation member 441: First containment cavity 45:1st aisle 46:Second aisle 47: Second explosion-proof valve 5: Battery management system module 6: First sealing adhesive layer 7:Second sealing adhesive layer

Claims

1. A battery cell having a first pole and a second pole installed at each of its opposing ends, Multiple tabs, including the first tab and the second tab, The box includes the enclosure and the first box cover, The housing includes a fixedly installed cylindrical body and a partition plate, the partition plate being located inside the cylindrical body and defining a first cavity with one end open together with the cylindrical body, the battery cell being installed inside the first cavity, one end of the battery cell being in contact with the partition plate, and the first box cover being installed at one end of the housing to seal the first cavity. A support portion is provided on the side of the first box cover facing the battery cell, the first tab is connected to the first pole, the support portion abuts against the first tab, the partition plate has pole hole cut into it, the second tab is located on the side of the partition plate away from the battery cell, the second pole passes through the pole hole and is connected to the second tab. battery.

2. The partition plate and the cylindrical body further define a second cavity with one end open, the second cavity being independent of the first cavity, the box body further includes a second box cover, the second box cover being installed at the other end of the housing and sealing the second cavity, and the second tab being located within the second cavity. The battery according to claim 1.

3. The box further includes a separating member, the separating member is filled into the first cavity, a first housing cavity is installed through the separating member, the battery cell is housed in the first housing cavity and conforms to the shape of the first housing cavity. The battery according to claim 2.

4. The first box cover is cap-shaped, and the first box cover has a second housing cavity that communicates with the first housing cavity. The battery according to claim 3.

5. A first explosion-proof valve is further installed at each of the opposing ends of the battery cell, and the two first explosion-proof valves communicate with the second cavity and the second housing cavity, respectively. A first passage is provided in the box body that penetrates the separating member and the partition plate, and the first passage is independent of the first housing cavity. The second cavity and the second housing cavity communicate with each other via the first passage. A second explosion-proof valve is further installed in the box body, and the second explosion-proof valve communicates with the second housing cavity. The battery according to claim 4.

6. The box body has a second passage further opened, the second passage including a first subsection penetrating the side wall of the cylindrical body and a second subsection opened within the separating member, the first subsection communicating with the second subsection, the second passage being independent of the first housing cavity and the first passage, the second subsection communicating with the second housing cavity and the outside, or the second cavity and the outside, and the second explosion-proof valve being installed in the cylindrical body and communicating with the first subsection. The battery according to claim 5.

7. The first tab is connected to the first pole column, and the support portion abuts against the connection between the first tab and the first pole column, and / or The second tab is integrally installed with the partition plate, and / or The first tab is welded to the first pole column and / or, The second tab is welded to the second pole column. The battery according to claim 1.

8. The battery further includes a battery management system module, which is installed in the second cavity and electrically connected to the battery cell. The battery according to claim 2.

9. The first box cover is inserted into the first cavity, and a first sealing adhesive layer is provided between the first box cover and the cylindrical body. The second box cover is inserted into the second cavity, and a second sealing adhesive layer is provided between the second box cover and the cylindrical body. The battery according to claim 2.

10. The first box cover is cap-shaped, and a first protrusion is provided on the edge of the first box cover extending toward the cylindrical body, the cylindrical body, the first box cover, and the first protrusion define a first housing groove, and the first sealing adhesive layer is located within the first housing groove. The second box cover is cap-shaped, and a second protrusion extending toward the cylindrical body is provided on the edge of the second box cover, the cylindrical body, the second box cover, and the second protrusion define a second housing groove, and the second sealing adhesive layer is located within the second housing groove. The battery according to claim 9.

11. The cylindrical body is further provided with a first position limiting portion located within the second cavity, and the second box cover abuts against the first position limiting portion and / or, The edge of the first box cover is in contact with the separating member. The battery according to claim 3.

12. The step of providing a battery cell in which a first pole and a second pole are installed at each of the opposing ends, A housing is provided, the housing includes a cylindrical body and a partition plate to which the housing is fixedly installed, the partition plate is located inside the cylindrical body, the partition plate together with the cylindrical body defines a first cavity with one end open, a pole hole is made in the partition plate, the battery cell is installed inside the first cavity, the second pole is inserted through the pole hole, and one end of the battery cell abuts against the partition plate, The steps include providing a first tab and connecting the first tab to the first pole pole, A first box cover is provided, a support portion is installed on one side of the first box cover, the first box cover is installed at one end of the housing to seal the first cavity, and the support portion is in contact with the first tab, The steps include providing a second tab, fixing the second tab to the side of the partition plate away from the first cavity, and connecting it to the second pole column, Battery manufacturing method.

13. The partition plate and the cylindrical body further define a second cavity with one end open, the second cavity being independent of the first cavity, and the method for manufacturing the battery is as follows: The second step is to provide the box cover and the battery management system module, The steps include installing the battery management system module in the second cavity and connecting it to the battery cell, The process further includes the step of installing the second box cover on the other end of the housing to seal the second cavity, A method for manufacturing a battery according to claim 12.

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