Battery box, battery and vehicle

Abstract

The utility model provides a kind of battery box, battery and vehicle, the battery box includes box body and box cover, box body is used to install electric core group;Box cover is covered on box body, box cover is equipped with mounting hole, mounting hole is used to install the pole of BMS component, box cover is equipped with glue groove, glue groove is set around mounting hole, glue groove is used to fill glue to be fixedly connected with BMS component with box cover.By setting glue groove on box cover, filling glue in glue groove, BMS component and box cover can be connected by glue, so as to improve the technical problem that BMS component and battery box cover exist high cost, process complex when connecting, with simple structure, processing technology.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery box cover, a battery, and a vehicle. Background Technology

[0002] A 12V battery consists of a battery box, a battery pack, and a BMS. The battery pack is installed inside the battery box, and the BMS is connected to the battery box cover by threads. Threaded connections are costly and involve complex manufacturing processes. Utility Model Content

[0003] The embodiments of this utility model provide a battery box cover, a battery, and a vehicle, which can improve the technical problems of high cost and complex process when connecting the BMS and the battery box cover.

[0004] In a first aspect, embodiments of the present invention provide a battery box, comprising: The housing is used to install the battery cell assembly; A cover is provided to fit over the housing body. The cover has mounting holes for mounting the terminals of the BMS component. The cover also has an adhesive groove surrounding the mounting holes, which are configured to mount the terminals. The adhesive groove is used to fill adhesive to securely connect the cover and the BMS component. By providing an adhesive groove on the cover and filling it with adhesive, the BMS component and the cover can be connected by adhesive, thus improving the high cost and complex manufacturing process of connecting the BMS component and the battery cover. This design is simple in structure and easy to manufacture.

[0005] In some embodiments, the lid has a glue groove on the side facing the box body, and the glue groove surrounds the mounting hole. This facilitates the processing of the glue groove, and the glue groove has a large contact area with the BMS component, thus improving the stability of the connection between the lid and the BMS component.

[0006] In some embodiments, a limiting member is provided on the side of the lid facing the box body, the limiting member being used to restrict the rotation of the electrode post. By providing a limiting member on the lid, the rotation of the electrode post is restricted, reducing the probability of deformation caused by the electrode post being rotated by external forces.

[0007] In some embodiments, the limiting member is disposed on the side of the adhesive groove away from the mounting hole. The side of the limiting member facing the mounting hole is configured to abut against the edge of the BMS assembly when the BMS assembly rotates, thereby restricting the rotation of the BMS assembly. The planar contact between the limiting member and the side of the BMS assembly forms a stable constraint, effectively limiting the rotational offset of the pole during installation and use, and improving assembly efficiency.

[0008] In some embodiments, the limiting member has a snap-fit ​​portion at one end away from the cover. The snap-fit ​​portion extends from the end of the limiting member toward the adhesive groove side and is configured to abut against the bottom surface of the BMS assembly to clamp the BMS assembly. By providing a snap-fit ​​portion at one end of the limiting member, the limiting member and the snap-fit ​​portion form an integrated structural design. This design not only makes the structure more compact but also directly fixes the BMS assembly through the snap-fit ​​portion, effectively improving its stability and reliability, reducing the use of bolts, and significantly simplifying the overall structure of the BMS assembly.

[0009] In some embodiments, the adhesive groove is an arc-shaped groove or a circular groove. The arc-shaped or circular groove design allows the adhesive to spread evenly from the center to both sides, ensuring a uniform joint surface and strong joint.

[0010] In some embodiments, the arc-shaped groove and the mounting hole are coaxially arranged. This coaxial arrangement facilitates the machining of the arc-shaped groove.

[0011] In some embodiments, the two side walls of the adhesive groove are a first rib and a second rib extending from the bottom of the lid towards the box body, with the first rib being closer to the mounting hole than the second rib. The first rib, the second rib, and the bottom surface of the lid form the adhesive groove, which simplifies the processing and forming of the adhesive groove while increasing the structural strength of the lid.

[0012] In some embodiments, the limiting member is a third rib extending from the bottom of the lid towards the box body. This simplifies the manufacturing process of the limiting member while increasing the structural strength of the lid.

[0013] In some embodiments, the third rib is a long strip structure. The shape of the third rib is simple and easy to process.

[0014] In some embodiments, the third rib is disposed on the side of the second rib away from the mounting hole, and the distance between the end face of the third rib and the bottom of the cover is greater than the distance between the end face of the first rib and the bottom of the cover. The third rib protrudes beyond the design of the first rib, and the limiting member prevents adhesive from overflowing into areas outside the limiting member, ensuring the appearance of the battery.

[0015] In some embodiments, the side of the third rib facing the mounting hole is tangent to the circle containing the side of the glue groove away from the mounting hole. One side of the limiting member is tangent to the outer edge of the glue groove. The limiting member is close to the glue groove, resulting in a compact product structure and ease of processing.

[0016] In some embodiments, the box cover has an adhesive groove on the side facing the mounting hole, and the adhesive groove communicates with the mounting hole; Alternatively, the glue groove is provided on the side of the box cover away from the box body, the glue groove is arranged around the mounting hole, and the glue groove communicates with the mounting hole.

[0017] By designing the glue groove to communicate with the mounting hole, the terminal post can be effectively fixed in the mounting hole. The glue in the glue groove fills the gap between the terminal post and the wall of the mounting hole, thereby improving the sealing performance of the battery box.

[0018] In some embodiments, the cover has a latching member on the side facing the housing, and the end of the latching member has a snap-fit ​​portion that extends from the end of the latching member toward the mounting hole. The snap-fit ​​portion is positioned to abut against the bottom surface of the electrode post to clamp the electrode post. By using the latching member and the adhesive in the glue groove to fix the electrode post, the stability and reliability of the electrode post are effectively improved, the use of bolts is reduced, and the overall structure of the BMS assembly is significantly simplified.

[0019] In some embodiments, the fastener includes a limiting portion configured to restrict rotation of the electrode post. The limiting portion extends from the side of the cover towards the box body towards the box body, and the engaging portion is located at the end of the limiting portion opposite to the cover. By forming the limiting portion on the fastener, rotation of the electrode post is now prevented. The fastener, having both a limiting portion and a engaging portion, simultaneously achieves the functions of fixing and preventing rotation of the electrode post, and its structure is simple and compact.

[0020] In some embodiments, a plurality of fastening members are provided on the side of the cover facing the box body, and the plurality of fastening members are spaced apart circumferentially along the mounting hole. The distribution of multiple fastening members circumferentially along the mounting hole disperses the clamping force between the pole and the box body to multiple points around the mounting hole, avoiding deformation or detachment caused by excessive force on a single fastener, and improving the installation stability of the pole.

[0021] Secondly, embodiments of this application provide a battery, comprising: Battery box as described in any of the above; The battery cell assembly is installed inside the battery box; The BMS assembly is connected to the battery cell assembly. The BMS assembly includes a terminal post and an electrode plate. The electrode plate is installed at one end of the terminal post located inside the battery box. The terminal post portion is located inside the mounting hole. The BMS assembly is glued to the box cover.

[0022] In some embodiments, the side of the cover facing the housing body is provided with a limiting member and the adhesive groove. A gap is formed between the side of the electrode and the side of the limiting member facing the mounting hole, and the gap communicates with the adhesive groove. Because of the gap between the side of the electrode and the side of the limiting member, and this gap communicating with the adhesive groove, adhesive in the adhesive groove can overflow through this gap, reducing adhesive overflow from the mounting hole to the outer surface of the cover and improving battery durability.

[0023] In some embodiments, the battery further includes the CCS assembly, which includes a CCS support. The CCS support has a limiting post extending from the surface of the CCS support towards the cover side. The limiting post is spaced a certain distance from the side of the electrode sheet opposite to the electrode post. The distance between the limiting post and the electrode sheet provides space in case of electrode sheet vibration or deformation, thus improving battery reliability.

[0024] In some embodiments, along the axial direction of the electrode post, the projection of the electrode post lies within the projection of the electrode sheet, and the electrode sheet is glued to the cover. The electrode sheet is located below the adhesive groove, and the large contact area between the electrode sheet and the adhesive groove is beneficial for fixing the electrode sheet.

[0025] In some embodiments, the cover is provided with a limiting member on the side facing the box body, and the side of the limiting member facing the mounting hole is configured to abut against the edge of the electrode when the BMS assembly rotates, so as to limit the rotation of the BMS assembly.

[0026] The presence of the limiting component not only effectively restricts the rotation of the electrode plates but also indirectly prevents the rotation of the electrode post. This compact design provides better layout convenience, making the overall device more space-efficient while ensuring operational stability and safety.

[0027] In some embodiments, the electrode post includes a column and a connecting portion. One end of the column, located inside the battery case, is connected to the connecting portion. Along the axial direction of the electrode post, the projection of the electrode post lies within the projection of the connecting portion. The electrode sheet is fixed to the side of the connecting portion opposite to the column. The connecting portion and / or the column are adhesively fixed to the case cover. The connecting portion increases the contact area with the electrode sheet, making the electrode sheet more stably fixed to the connecting portion and reducing contact resistance.

[0028] In some embodiments, the cover has a latching member on the side facing the box body, and the end of the latching member has a snap-fit ​​portion that extends from the end of the latching member toward the mounting hole side. The snap-fit ​​portion abuts against the bottom surface of the connecting portion to clamp the connecting portion. The connecting portion is connected to the latching member, and the connecting portion can play a certain buffering role, dispersing stress, reducing damage to the terminals and plates caused by excessive local stress, and extending the battery's service life.

[0029] In some embodiments, the latching member includes a limiting portion extending from the side of the cover towards the box body towards the box body. The locking portion is located at the end of the limiting portion opposite to the cover. The side of the limiting portion facing the mounting hole is configured to abut against the edge of the connecting portion when the pole rotates, thereby restricting the rotation of the pole. The contact between the limiting portion and the connecting portion ensures that the rotation of the pole is effectively limited, thus guaranteeing the stability of the connection between the connecting portion, the connecting piece, and the pole. This prevents the connecting piece from loosening due to the rotation of the pole, ensuring that the entire device maintains its structural integrity and functional reliability during use.

[0030] Thirdly, embodiments of the present invention provide a vehicle including any of the batteries described above.

[0031] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional schematic diagram of a battery provided in an embodiment of this utility model; Figure 2 This is a first cross-sectional view of the battery provided in an embodiment of the present invention; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a second cross-sectional view of the battery provided in an embodiment of the present invention; Figure 5 This is a perspective view of the battery case cover provided in an embodiment of the present utility model; Figure 6 yes Figure 2 A partially enlarged view of another type of latching mechanism at point A; Figure 7 This is a cross-sectional view of a battery case cover with a glue groove provided in an embodiment of this utility model; Figure 8 This is a bottom view of the battery case cover with the terminals and plates installed, provided in an embodiment of this utility model. Figure 9 This is a schematic diagram of the structure of the BMS component of the battery provided in an embodiment of this utility model; Figure 10 This is a perspective view of another form of the battery case cover provided in an embodiment of this utility model; Figure 11 yes Figure 10 A magnified view of a section at point B in the middle; Figure 12 yes Figure 7 A partial enlarged view of point C when the middle adhesive groove is located around and connected to the mounting hole; Figure 13 yes Figure 7 A magnified view of point C when the middle adhesive groove is located on the top surface of the box cover and communicates with the mounting hole.

[0034] The labels in the attached diagram are: 100. Battery box; 110. Box body; 120. Box cover; 121. Mounting hole; 130. Glue groove; 131. First rib; 132. Second rib; 140. Limiting component; 141. Third rib; 150. Fastener; 151. Snap-fit ​​part; 152. Limiting part; 153. Groove; 200. Battery cell pack; 300. BMS assembly; 310. Pole post; 311. Column; 312. Connector; 320. Electrode plate; 330. PCB board; 340. Gap; 400 - CCS assembly; 410 - Limiting post; 420 - CCS bracket. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0036] 12V lithium batteries are widely used in consumer electronics, transportation, and energy storage systems due to their moderate voltage, high energy density, and long cycle life. A traditional 12V lithium battery structure typically includes a battery case 100, a cell assembly 200, and a BMS (Battery Management System) component 300. The BMS component plays a crucial role in the entire battery system, monitoring the voltage, temperature, and current of the cells to prevent overcharging, overcurrent, and overheating, while ensuring a balance of charge between the cells, thereby effectively extending the overall lifespan of the battery pack. For more details, see [link to relevant documentation]. Figure 4 The BMS assembly 300 consists of a PCB board 330, electrode plates 320, and terminal posts 310. The electrode plates 320 connect the terminal posts 310 and the PCB board 330, allowing the PCB board 330 and electrode plates 320 to be securely mounted within the battery box 100. The terminal posts 310 pass through the battery box 100 and connect to the electrode plates 320. The terminal posts 310 or electrode plates 320 are fixed to the battery box 100 with bolts. This method suffers from high cost and complex processes.

[0037] For these issues, see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This application provides a battery box 100, which includes a box body 110 and a box cover 120. The box body 110 is used to accommodate the battery cell assembly 200, while the box cover 120 can be securely closed onto the box body 110. To simplify the installation process of the BMS assembly 300, the box cover 120 is designed with specific mounting holes 121, which are specifically used to install the terminals 310 of the BMS assembly 300. In addition, the box cover 120 has an adhesive groove 130 on the side facing the box body 110. The adhesive groove 130 is located outside the mounting holes 121 and is designed to be filled with adhesive to fix the box cover 120 to the BMS assembly 300. By using adhesive to securely fix the BMS assembly 300 to the battery box 100, not only are the assembly steps simplified, but production input is also effectively reduced, and the overall cost is lowered. The battery box 100 of this application will be described in detail below with reference to the accompanying drawings.

[0038] In some embodiments, see Figure 1 and Figure 2The battery box 100 includes a box body 110 and a box cover 120. The battery box 100 has a cubic structure. The box body 110 is a hollow structure with one open end, facilitating the installation of the battery cell pack 200 inside and providing good protection. The battery box 100 is generally made of metal or high-strength plastic, providing physical protection against compression and expansion. The shape and size of the box cover 120 match the shape and size of the box body 110, ensuring that the box cover 120 closes onto the box body 110 to form a sealed space, preventing dust and other external factors from affecting the battery pack. The box cover 120 and the box body 110 are assembled together by snaps, screws, or other connection methods.

[0039] See Figure 5 The cover 120 has mounting holes 121, the shape of which is similar to that of the terminal post 310, and the size of which is similar to that of the terminal post 310, to ensure that the electrodes can be securely installed. The cover 120 has two mounting holes 121, for mounting the positive terminal post 310 and the negative terminal post 310 of the battery, respectively. The terminal post 310 includes a positive terminal post 310 and a negative terminal post 310. The positive terminal post 310 passes through the cover 120 and is welded to the positive electrode plate 320 inside the battery case 100, and the negative terminal post 310 passes through the cover 120 and is welded to the negative electrode plate 320 inside the battery case 100.

[0040] See Figure 5 The cover 120 has two adhesive grooves 130 on the side facing the body 110, each groove 130 corresponding to a mounting hole 121. By filling the grooves 130 with adhesive, the electrode 320 of the BMS assembly 300 can be glued and fixed to the cover 120, thereby fixing the terminal 310 in the mounting hole 121 on the cover 120. This not only increases the fixation of the terminal 310, but also improves the reliability and durability of the overall structure. This design simplifies the assembly steps and improves production efficiency during battery assembly.

[0041] As a key component connecting the battery cell and the circuit, the stability of the battery terminal 310 is crucial for the normal operation of the device. To prevent the terminal 310 from rotating or deforming during use, which could affect the circuit connection or circuit safety, [see...]. Figure 3 and Figure 5 The battery box 100 provided in this embodiment includes a limiting member 140, which is disposed on the side of the box cover 120 facing the box body 110. The limiting member 140 is used to restrict the rotation of the terminal post 310.

[0042] In this embodiment, the rotation of the electrode post 310 is restricted by the limiting member 140, which can effectively prevent the electrode post 310 from rotating due to external force, thereby ensuring that the connection between the electrode and the electrode plate 320, wires, battery cells, etc. is always in the correct position, preventing circuit failures caused by poor contact, loosening, etc., and ensuring the stability and reliability of the power supply of the device.

[0043] Based on the above embodiments, the limiting member 140 is disposed on the side of the glue groove 130 away from the mounting hole 121, and the side of the limiting member 140 is configured to contact the plane of the side of the BMS when the BMS assembly 300 rotates, so as to limit the rotation of the pole post 310.

[0044] This design establishes a stable constraint between the limiting component 140 and the plane on the side of the BMS assembly 300, effectively limiting the rotational displacement of the pole post 310 during installation and use, thus improving overall assembly efficiency. Furthermore, this limiting component 140 design not only enhances the stability of the assembly but also reduces the risk of malfunctions due to rotational displacement, ensuring the reliability and safety of the equipment during long-term use. This design considers various possible scenarios during installation, making the installation of the BMS assembly 300 simpler and more efficient, while also extending the equipment's lifespan and performance.

[0045] In some embodiments, see Figure 5 The glue groove 130 is an arc-shaped groove. An arc-shaped groove refers to the shape of the glue groove 130 projected onto the cover body as an arc. The arc-shaped structure has no sharp edges, and the flow resistance of the glue is small when it flows in the arc-shaped groove. The groove wall of the arc-shaped groove has a streamlined guiding effect, which helps the glue to spread evenly to both sides after being pressed in the middle of the arc-shaped groove, making the sealing interface uniform and easy to control.

[0046] In some embodiments, see Figure 5 The arc-shaped groove and the mounting hole 121 are coaxially arranged. The mounting hole 121 is circular, and the center of curvature of the arc-shaped groove coincides perfectly with the axis of the mounting hole 121. The mounting hole 121 and the arc-shaped groove are coaxially arranged, and the circumferential load formed by the glue in the arc-shaped groove around the pole post 310 is symmetrically distributed along the axis, ensuring that the pole post 310 and the cover form a stable connection.

[0047] In some embodiments, see Figure 5 The glue groove 130 is an annular groove.

[0048] In the embodiments of this application, glue is filled into the annular groove to achieve adhesive bonding between the BMS component 300 and the cover from the circumference of the pole post 310, thereby making the connection force between the cover and the BMS component 300 symmetrically distributed and enhancing the strength of the mechanical connection.

[0049] In other embodiments, the adhesive groove 130 includes a plurality of sub-grooves arranged around the mounting hole 121. Adjacent sub-grooves may be connected or not connected. For example, the adhesive groove 130 includes two sub-grooves, a first sub-groove and a second sub-groove, located on opposite sides of the mounting hole 121.

[0050] In the embodiments of this application, the pole post 310 is installed in the mounting hole 121, and correspondingly, the first sub-groove and the second sub-groove are located on both sides of the pole post 310. Adhesive is filled into these two sub-grooves to adhesively bond the BMS assembly 300 to the cover from both sides of the pole post 310, thereby achieving a symmetrical distribution of the connection force between the cover and the BMS assembly 300 and enhancing the strength of the mechanical connection.

[0051] In other embodiments, the first and second sub-slots form a two-section structure, allowing excess adhesive to overflow into the area between them. This design not only prevents adhesive from overflowing outside the battery case 100, but also ensures the aesthetics of the battery.

[0052] In some embodiments, see Figure 2 , Figure 3 and Figure 5 The two side walls of the glue groove 130 extend from the bottom of the box cover 120 to the box body 110 to form a first rib 131 and a second rib 132. The first rib 131 is closer to the mounting hole 121 than the second rib 132.

[0053] In this embodiment, the first rib 131 and the second rib 132 can be integrally molded with the cover 120 by injection molding, simplifying the processing and molding of the glue groove 130. In addition, the first rib 131 and the second rib 132 are equivalent to the reinforcing ribs of the cover 120, increasing the structural strength of the cover 120 around the mounting hole 121.

[0054] In other embodiments, the glue groove 130 is a recess 153 formed on the bottom surface of the lid 120.

[0055] In some embodiments, see Figure 3 The limiting member 140 extends from the bottom of the cover 120 to the side of the box body 110 to form a third protruding rib 141, which restricts the rotation of the pole post 310. The cross-sectional shape of the third protruding rib 141 is arc-shaped or rectangular.

[0056] In this embodiment, the third rib 141 and the lid 120 can be integrally formed by injection molding, simplifying the manufacturing process. Furthermore, the third rib 141 acts as a reinforcing rib of the lid 120, increasing its structural strength.

[0057] In some embodiments, see Figure 5The third rib 141 is a long strip structure. Understandably, the projection of the third rib 141 onto the lid 120 is rectangular.

[0058] In this embodiment, the third rib 141 is a long strip structure, which is simple in structure and easy to process. In addition, the reinforcing rib of the long strip structure helps to improve the overall strength around the mounting hole 121 on the cover 120.

[0059] In other embodiments, the projection shape of the third rib 141 on the cover 120 may also be arc-shaped. The center of curvature of the arc of the third rib 141 coincides with the center of the mounting hole 121.

[0060] In some embodiments, see Figure 3 and Figure 5 The third rib 141 is located on the side of the second rib 132 away from the mounting hole 121. The distance between the end face of the third rib 141 and the bottom of the cover 120 is greater than the distance between the end face of the first rib 131 and the bottom of the cover 120.

[0061] In this embodiment, the second rib 132 is located inside the third rib 141, and the height of the third rib 141 is greater than the height of the second rib 132. When the adhesive in the adhesive groove 130 overflows from the second rib 132, the third rib 141 prevents the adhesive from spreading again. This prevents the adhesive from overflowing into areas outside the limiting member 140, thus ensuring the appearance of the battery.

[0062] In some embodiments, see Figure 3 and Figure 5 The third rib 141 has a first side and a second side that are arranged opposite to each other. The first side is closer to the mounting hole 121 than the second side, and the first side is tangent to the circumference of the side of the glue groove 130 that is away from the mounting hole 121. The first side of the limiting member 140 is shared with part of the inner wall of the glue groove 130. The limiting member 140 and the glue groove 130 are in close proximity, resulting in a compact product structure and convenient processing.

[0063] In some embodiments, see Figure 6 and Figure 8 The limiting member 140 has a locking portion 151 at its end away from the cover 120, and the locking portion 151 extends from the end of the limiting member 140 toward the adhesive groove 130. The locking portion 151 abuts against the bottom of the BMS assembly 300 to fix the BMS assembly 300. It can be understood that a portion of the end face of the groove wall forming the adhesive groove 130 forms a clamping cavity with the locking portion 151, and the locking portion 151 is configured to abut against the bottom surface of the BMS assembly 300 to fix the BMS assembly 300 in the clamping cavity.

[0064] By providing a snap-fit ​​portion 151 at one end of the limiting member 140, the limiting member 140 and the snap-fit ​​portion 151 form an integrated structural design, thereby making the overall structure more compact. The snap-fit ​​portion 151 directly secures the BMS component 300, significantly improving its stability and reliability. This design reduces the need for bolts, simplifies the overall structure of the BMS component 300, and reduces production costs and installation difficulty.

[0065] In some embodiments, see Figure 12 The cover 120 has a glue groove 130 on the side facing the mounting hole 121. The glue groove 130 communicates with the mounting hole 121, which facilitates the provision of support and sealing functions during the installation of the cover 120 and the BMS component 300, thereby ensuring a tight fit between the cover 120 and the BMS component 300 and improving the stability and durability of the overall structure.

[0066] In some embodiments, see Figure 7 and Figure 13 The cover 120 has a glue groove 130 on the side opposite to the housing 110. This groove 130 surrounds and communicates with the mounting hole 121. This design not only facilitates the filling of glue into the groove 130 but also provides necessary support and sealing during the installation of the cover 120 and the BMS assembly 300. When glue is poured into the groove 130, it acts as an adhesive, ensuring a stable connection between the cover 120 and the BMS assembly 300, while also preventing any external substances from entering the assembly.

[0067] In some embodiments, see Figure 7 , Figure 8 , Figure 10 and Figure 11 The cover 120 has a latching member 150 on the side facing the body 110, and the end of the latching member 150 has a snap-fit ​​portion 151. The snap-fit ​​portion 151 extends from the end of the latching member 150 toward the mounting hole 121, forming a clamping cavity with the side of the cover 120 facing the body 110. The snap-fit ​​portion 151 is designed to abut against the bottom surface of the pole post 310, thereby fixing the pole post 310 within the clamping cavity. Through the combined action of the latching member 150 and the adhesive in the adhesive groove 130, the stability and reliability of the pole post 310 are effectively improved. This design reduces the use of bolts and significantly simplifies the installation structure of the BMS assembly 300. It improves assembly efficiency, reduces production costs, and makes the BMS assembly 300 more efficient and economical in practical applications.

[0068] In some embodiments, see Figure 7 , Figure 8 , Figure 10 and Figure 11The latching component 150 includes a limiting part 152, which is configured to restrict the rotation of the pole post 310. The limiting part 152 extends from the side of the cover 120 toward the body 110 towards the body 110. A locking part 151 is provided at the end of the limiting part 152 opposite to the cover 120. The limiting part 152 effectively fixes the rotation of the pole post 310. The latching component 150 has the dual functions of limiting and locking, not only fixing the pole post 310 but also preventing its rotation. The overall structure is simple and compact, convenient for installation and use, and improves the reliability and service life of the equipment.

[0069] Specifically, see Figure 10 and Figure 11 The limiting part 152 extends from the bottom of the lid 120 to the box body 110 to form a third protruding rib 141, which restricts the rotation of the pole post 310. The cross-sectional shape of the third protruding rib 141 is arc-shaped or rectangular.

[0070] In this embodiment, the third rib 141 and the lid 120 can be integrally formed by injection molding, simplifying the manufacturing process. Furthermore, the third rib 141 acts as a reinforcing rib of the lid 120, increasing its structural strength.

[0071] See Figure 5 , Figure 6 and Figure 11 The third rib 141 is a long strip structure. Understandably, the projection of the third rib 141 onto the lid 120 is rectangular.

[0072] In this embodiment, the third rib 141 is a long strip structure, which is simple in structure and easy to process. In addition, the reinforcing rib of the long strip structure helps to improve the overall strength around the mounting hole 121 on the cover 120.

[0073] See Figure 6 , Figure 10 and Figure 11 The snap-fit ​​portion 151 is located in the middle area of ​​the end of the third rib 141 away from the cover 120. The third rib 141 also has two grooves 153. The two grooves 153 are located on both sides of the snap-fit ​​portion 151. The snap-fit ​​portion 151 and the third rib 141 are integrally formed for easy processing. The material of the snap fastener 150 can be a plastic with elastic recovery capability. The grooves 153 on both sides of the snap-fit ​​portion 151 on the third rib 141 reduce the resistance when the snap-fit ​​portion 151 deforms, ensuring smooth installation of the BMS component 300.

[0074] The snap-fit ​​portion 151 is located in the middle area of ​​the end of the third rib 141 furthest from the cover 120. Its design prioritizes ease of processing, employing an integral molding structure with the third rib 141. This simplifies the manufacturing process and ensures the overall stability of the component. The snap-fit ​​part 150 is made of elastically recoverable plastic, effectively coping with deformation during use and quickly returning to its original shape, ensuring the snap-fit ​​portion 151 maintains its functionality and durability. The third rib 141 has two grooves 153 located on both sides of the snap-fit ​​portion 151, further reducing resistance during deformation and making the installation of the BMS component 300 smoother. Especially during the installation of the BMS component 300, this design significantly improves installation efficiency, ensuring precise positioning and secure installation of the component.

[0075] In some embodiments, see Figure 11 On one side of the cover 120, near the body 110, there are multiple fasteners 150, which are distributed circumferentially around the mounting holes 121. Specifically, two fasteners 150 are provided, located on both sides of the mounting holes 121. Two fastening ribs form a limit from both sides of the pole post 310 to ensure that the pole post 310 is securely installed.

[0076] In the embodiments of this application, multiple snap fasteners 150 are distributed circumferentially along the mounting hole 121. Therefore, the snapping force between the pole post 310 and the housing 110 is distributed to multiple points around the mounting hole 121, avoiding deformation or detachment caused by excessive force on a single snap fastener, thereby improving the installation stability of the pole post 310.

[0077] Secondly, see Figures 1 to 5 This application provides a battery comprising: a battery case 100 as described above; a cell assembly 200; and a BMS assembly 300. The cell assembly 200 is installed within the battery case 100. The BMS assembly 300 includes terminals 310 and electrode plates 320. The terminals 310 are located within mounting holes 121 and are fixedly connected to the electrode plates 320. The BMS assembly 300 is adhesively fixed to the case cover 120. The battery in this application embodiment has the same technical effects as the battery case 100 described above, and will not be repeated here.

[0078] In some embodiments, see Figure 3 The lid 120 is provided with a limiting member 140 on the side facing the box body 110. A gap 340 is formed between the side of the electrode 320 and the limiting member 140, and the gap 340 is connected to the glue groove 130.

[0079] For example, see Figure 3 and Figure 5The sidewalls of the glue groove 130 are formed by a first rib 131 and a second rib 132, and the limiting member 140 is formed by a third rib 141. The height of the third rib 141 is higher than that of the first rib 131 and the second rib 132. The first rib 131 and the second rib 132 extend to the upper surface of the electrode 320. The portion of the third rib 141 extending beyond the first rib 131 is located on the side of the electrode 320, forming a gap 340 between it and the side of the electrode 320. Excess glue can overflow from this gap 340, preventing excess glue from overflowing outside the cover 120 and ensuring the battery's aesthetic appearance.

[0080] In some embodiments, see Figure 3 The width of the gap 340 is D, and the size of D can be designed according to the flowability of the adhesive. In the embodiment of this application, D=0.3mm to ensure successful adhesive overflow.

[0081] In some embodiments, see Figure 3 The groove depth of the glue tank 130 is H, where H = 2 mm.

[0082] In some embodiments, see Figure 3 and Figure 4 The system also includes a CCS assembly 400, which comprises a CCS bracket 420 and a limiting post 410. The CCS bracket 420 is mounted on top of the cell. The CCS bracket 420 has a limiting post 410 extending from the side of the housing cover 120 on the surface of the CCS bracket 420. The end face of the limiting post 410 is spaced a certain distance from the side of the electrode 320 away from the limiting post 310. This reduces the probability of the electrode 320 deforming and coming into contact with the limiting post 410, which could affect the performance of the electrode 320, thus improving the reliability of the battery.

[0083] In some embodiments, see Figure 3 The distance between the end face of the limiting post 410 and the lower surface of the electrode 320 is L, where L = 0.5 mm. This dimension is reasonably designed to avoid a large distance that would prevent the electrode 320 from being properly supported.

[0084] In some embodiments, see Figure 3 Along the axial direction of the pole post 310, the projection of the pole post 310 is located within the projection of the pole piece 320, and the pole piece 320 is glued to the cover 120. The pole piece 320 is located below the glue groove 130, and the large contact area between the pole piece 320 and the glue groove 130 is beneficial to the fixation of the pole piece 320.

[0085] In some embodiments, see Figure 3 ,and Figure 5 The lid 120 is provided with a limiting member 140 on the side facing the box body 110. When the pole post 310 rotates, the limiting member 140 contacts the plane of the side of the pole piece 320 to limit the rotation of the pole post 310.

[0086] The presence of the limiting component 140 not only effectively restricts the rotation of the electrode 320, but also indirectly prevents the rotation of the electrode post 310. This design is compact, provides better layout convenience, makes the overall device more space-efficient, and ensures operational stability and safety.

[0087] In some embodiments, see Figure 7 , Figure 8 and Figure 9 The terminal post 310 includes a post body 311 and a connecting portion 312. One end of the post body 311, located inside the battery box 100, is connected to the connecting portion 312. Along the axial direction of the terminal post 310, the projection of the terminal post 310 lies within the projection of the connecting portion 312. The electrode plate 320 is fixed to the side of the connecting portion 312 facing away from the post body 311. A glue groove 130 is provided on the cover 120 around the mounting hole 121. The glue groove 130 is filled with glue. Alternatively, the glue groove 130 is provided on the side of the cover 120 facing away from the box body 110. The glue groove 130 communicates with the mounting hole 121 and is filled with glue, so that the post body 311 is glued and fixed to the cover 120. Alternatively, the glue groove 130 is provided on the side of the cover 120 facing the box body 110 and is filled with glue, so that the cover 120 is fitted and connected to the connecting portion 312. In this application, the connection portion 312 of the pole post 310 increases the contact area between the pole post 310 and the electrode 320, making the electrode 320 more stably fixed on the connection portion 312 and reducing the contact resistance.

[0088] In some embodiments, see Figure 7 The cover 120 has a latching member 150 on the side facing the body 110. The end of the latching member 150 has a latching portion 151 extending from the end of the latching member 150 towards the mounting hole 121. The latching portion 151 and the side of the cover 120 facing the body 110 form a clamping cavity, and the connecting portion 312 is clamped and fixed within the clamping cavity. The connecting portion 312 is connected to the latching member 150, and the connecting portion 312 can provide a certain buffering effect, dispersing stress and reducing damage to the terminal post 310 and electrode sheet 320 caused by excessive local stress, thus extending the battery's lifespan.

[0089] In some embodiments, see Figure 7The latching component 150 includes a limiting part 152, which extends from the side of the cover 120 near the body 110 toward the body 110. A locking part 151 is provided at the end of the limiting part 152 opposite to the cover 120. The limiting part 152 contacts the plane of the side of the connecting part 312 to restrict the rotation of the pole post 310. Through the contact between the limiting part 152 and the connecting part 312, the rotation of the pole post 310 is effectively restricted, thereby ensuring the stability of the connection between the connecting part 312, the connecting piece, and the pole post 310. This prevents the connecting piece from loosening due to the rotation of the pole post 310, ensuring the structural integrity and functional reliability of the entire device during use.

[0090] Thirdly, embodiments of this application provide a vehicle that includes a battery as described above.

[0091] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0092] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0093] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery box (100), characterized in that, include: The housing (110) is used to install the battery cell assembly (200); A cover (120) is fitted onto the box body (110). The cover (120) has a mounting hole (121) and a glue groove (130) surrounding the mounting hole (121). The mounting hole (121) is configured as a pole post (310) for mounting the BMS component (300). The glue groove (130) is used to fill glue to fix the cover (120) to the BMS component (300).

2. The battery box (100) according to claim 1, characterized in that, The box cover (120) has a glue groove (130) on the side facing the box body (110), and the glue groove (130) is arranged around the mounting hole (121).

3. The battery box (100) according to claim 1, characterized in that, The lid (120) is provided with a limiting member (140) on the side facing the box body (110), and the limiting member (140) is used to restrict the rotation of the pole post (310).

4. The battery box (100) according to claim 3, characterized in that, The limiting member (140) is disposed on the side of the adhesive groove (130) away from the mounting hole (121). The side of the limiting member (140) facing the mounting hole (121) is configured to abut against the edge of the BMS assembly (300) when the BMS assembly (300) rotates, so as to restrict the rotation of the BMS assembly (300).

5. The battery box (100) according to claim 4, characterized in that, The limiting member (140) has a snap-fit ​​portion (151) at one end away from the cover (120). The snap-fit ​​portion (151) extends from the end of the limiting member (140) toward the glue groove (130). The snap-fit ​​portion (151) is configured to abut against the bottom surface of the BMS assembly (300) to clamp the BMS assembly (300).

6. The battery box (100) according to any one of claims 1 to 5, characterized in that, The glue groove (130) is an arc-shaped groove or a circular groove.

7. The battery box (100) according to claim 6, characterized in that, The glue groove (130) is coaxially arranged with the mounting hole (121).

8. The battery box (100) according to any one of claims 3 to 5, characterized in that, The two side walls of the glue groove (130) are a first rib (131) and a second rib (132) extending from the bottom of the box cover (120) to the side of the box body (110), and the first rib (131) is closer to the mounting hole (121) than the second rib (132).

9. The battery box (100) according to claim 8, characterized in that, The limiting member (140) extends from the bottom of the lid (120) to the side of the box body (110) to form a third rib (141).

10. The battery box (100) according to claim 9, characterized in that, The third rib (141) is a long strip structure.

11. The battery box (100) according to claim 10, characterized in that, The third rib (141) is disposed on the side of the second rib (132) away from the glue groove (130), and the distance between the end face of the third rib (141) and the bottom of the box cover (120) is greater than the distance between the end face of the first rib (131) and the bottom of the box cover (120).

12. The battery box (100) according to claim 10, characterized in that, The side of the third rib (141) facing the mounting hole (121) is tangent to the outer edge of the glue groove (130).

13. The battery box (100) according to claim 1, characterized in that, The box cover (120) has a glue groove (130) on the side facing the mounting hole (121), and the glue groove (130) communicates with the mounting hole (121); Alternatively, the box cover (120) may have a glue groove (130) on the side opposite to the box body (110), the glue groove (130) may be arranged around the mounting hole (121), and the glue groove (130) may be connected to the mounting hole (121).

14. The battery box (100) according to claim 13, characterized in that, The cover (120) has a latching member (150) on the side facing the box body (110). The end of the latching member (150) has a snap-fit ​​part (151). The snap-fit ​​part (151) extends from the end of the latching member (150) toward the mounting hole (121). The snap-fit ​​part (151) is configured to abut against the bottom surface of the pole post (310) to clamp the pole post (310).

15. The battery box (100) according to claim 14, characterized in that, The fastener (150) includes a limiting part (152), which is configured to restrict the rotation of the pole post (310). The limiting part (152) extends from the side of the cover (120) toward the box body (110) toward the box body (110). The locking part (151) is provided at the end of the limiting part (152) away from the cover (120).

16. The battery case (100) according to claim 14 or 15, characterized in that, The lid (120) is provided with a plurality of fasteners (150) on the side facing the box body (110), and the plurality of fasteners (150) are arranged at intervals along the circumference of the mounting hole (121).

17. A battery, characterized in that, include: The battery box (100) as described in any one of claims 1 to 16; The battery cell assembly (200) is installed inside the battery box (100); The BMS assembly (300) is connected to the battery cell assembly (200). The BMS assembly (300) includes a terminal post (310) and an electrode plate (320). The electrode plate (320) is installed at one end of the terminal post (310) located inside the battery box (100). The terminal post (310) is partially located inside the mounting hole (121). The BMS assembly (300) is glued to the box cover (120).

18. The battery according to claim 17, characterized in that, The box cover (120) is provided with a limiting member (140) and the glue groove (130) on the side facing the box body (110). A gap (340) is formed between the side of the electrode (320) and the side of the limiting member (140) facing the mounting hole (121). The gap (340) communicates with the glue groove (130).

19. The battery according to claim 17, characterized in that, It also includes a CCS assembly (400), which includes a CCS bracket (420) and a limiting post (410) extending from the surface of the CCS bracket (420) toward the cover (120). The limiting post (410) is spaced a certain distance from the side of the electrode (320) away from the electrode post (310).

20. The battery according to claim 17, characterized in that, Along the axial direction of the pole post (310), the projection of the pole post (310) is located within the projection of the electrode plate (320), and the electrode plate (320) is glued to the cover (120).

21. The battery according to claim 20, characterized in that, The cover (120) has a limiting member (140) on the side facing the box body (110). The side of the limiting member (140) facing the mounting hole (121) is configured to abut against the edge of the electrode (320) when the BMS assembly (300) rotates, so as to restrict the rotation of the BMS assembly (300).

22. The battery according to claim 17, characterized in that, The pole post (310) includes a column (311) and a connecting part (312). One end of the column (311) located inside the battery box (100) is connected to the connecting part (312). Along the axial direction of the pole post (310), the projection of the pole post (310) is located within the projection of the connecting part (312). The electrode plate (320) is fixed to the side of the connecting part (312) away from the column (311). The connecting part (312) and / or the column (311) are glued to the box cover (120).

23. The battery according to claim 22, characterized in that, The lid (120) has a buckle (150) on the side facing the box body (110). The end of the buckle (150) has a snap-fit ​​part (151). The snap-fit ​​part (151) extends from the end of the buckle (150) toward the mounting hole (121). The snap-fit ​​part (151) abuts against the bottom surface of the connecting part (312) to clamp the connecting part (312).

24. The battery according to claim 23, characterized in that, The buckle (150) includes a limiting part (152) that extends from the side of the cover (120) toward the box body (110) toward the box body (110). The end of the limiting part (152) facing away from the cover (120) is provided with the snap-fit ​​part (151). The side of the limiting part (152) facing the mounting hole (121) is configured to abut against the edge of the connecting part (312) when the pole post (310) rotates, so as to restrict the rotation of the pole post (310).

25. A vehicle, characterized in that, Includes the battery as described in any one of claims 17 to 24.

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