Battery and vehicle

Abstract

The invention discloses a battery and a vehicle. The battery comprises: a box body having an accommodating cavity; the battery cell is arranged in the accommodating cavity; the expansion beam is arranged in the box body and is integrally formed with the box body, the side surface, facing the battery cell, of the expansion beam is a draft surface, and the draft surface and the bottom wall of the accommodating cavity are arranged at an angle; a wedge-shaped plate is arranged between the expansion beam and the battery cell, the wedge-shaped plate is provided with a first side face and a second side face which are opposite in the thickness direction, the first side face faces the battery cell and is perpendicular to the bottom wall of the containing cavity, and the second side face is parallel to and attached to the draft surface. Through the matching structure of the wedge-shaped plate and the draft surface, the perpendicularity requirement of the battery cell mounting surface can be met without machining the expansion beam, so that the high-difficulty and long-time cutting process is omitted, the problems of vibration, cutter breakage, step residue, manual back gouging and the like in the machining process are avoided, and the production efficiency is improved. While the use stability and the structural strength of the battery are ensured, the processing cost is reduced, the production time is shortened, the battery production efficiency is improved, and the product yield is improved.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a battery and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, the need for integrated manufacturing to reduce the number of parts and improve production efficiency is a strong demand from OEMs to increase production capacity. Integrated manufacturing can increase battery capacity, improve the torsional rigidity of the vehicle, and enhance battery safety. However, to ensure smooth demolding during die casting, a draft angle needs to be designed into the battery structure, which can lead to decreased reliability when the battery cells expand. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a battery and a vehicle that can effectively compensate for the draft angle in the battery structure, improve battery reliability, and simplify manufacturing and processing.

[0004] In a first aspect, this application provides a battery comprising:

[0005] The box-shaped enclosure has a receiving cavity; The battery cell is housed within the receiving cavity; An expansion beam is located inside the housing cavity and is integrally formed with the housing. The side of the expansion beam facing the battery cell is the draft surface, which is set at an angle to the bottom wall of the housing cavity. A wedge plate is provided between the expansion beam and the battery cell. The wedge plate has a first side and a second side facing away from each other in its thickness direction. The first side faces the battery cell and is perpendicular to the bottom wall of the receiving cavity, while the second side is parallel to and fits against the draft surface.

[0006] According to the battery of this application, the wedge plate and the draft surface are matched to meet the vertical requirements of the cell mounting surface without the need for machining the expansion beam. This eliminates the difficult and time-consuming cutting process and avoids problems such as vibration, broken tools, step residue and manual cleaning during the processing. While ensuring the stability and structural strength of the battery, it significantly reduces the processing cost, shortens the production time of a single piece, improves the overall production efficiency of the battery, and improves the product yield.

[0007] According to one embodiment of this application, the draft surface includes a plurality of draft ramps connected sequentially along its height direction, and the angles between the plurality of ramps and the bottom wall of the receiving cavity increase sequentially along the direction away from the bottom wall of the receiving cavity.

[0008] According to one embodiment of this application, the draft surface includes three draft ramps.

[0009] According to one embodiment of this application, along the direction away from the bottom wall of the receiving cavity, the three draft slopes are a root slope, a middle slope, and an upper slope, respectively. The angle between the root slope and the bottom wall of the receiving cavity is 86°-88°, the angle between the middle slope and the bottom wall of the receiving cavity is 88°-88.5°, and the angle between the upper slope and the bottom wall of the receiving cavity is 88.5°-89°.

[0010] According to one embodiment of this application, a glue storage tank is provided on one side of the second side of the wedge plate, and adhesive is provided in the glue storage tank. The wedge plate is bonded to the expansion beam by the adhesive.

[0011] According to one embodiment of this application, the second side surface includes a plurality of mating slopes that correspond one-to-one with a plurality of draft slopes, and a glue storage groove is provided at the connection of adjacent mating slopes.

[0012] According to one embodiment of this application, a snap-fit ​​groove is provided at one end of the wedge plate away from the bottom wall of the receiving cavity, and the end of the expansion beam away from the bottom wall of the receiving cavity is embedded in the snap-fit ​​groove.

[0013] According to one embodiment of this application, the length of the wedge plate is the same as the length of the expansion beam.

[0014] According to one embodiment of this application, the battery further includes a buffer plate, with the buffer plate disposed between the wedge plate and the battery cell.

[0015] Secondly, this application provides a vehicle that includes a battery according to any of the technical solutions in the first aspect, the battery being used to provide electrical energy to the vehicle.

[0016] The beneficial effects of the vehicle provided in the second aspect of this application are the same as those of the battery provided in the first aspect, and will not be repeated here.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a partial explosion structure of a battery provided in an embodiment of this application; Figure 2 This is a structural schematic diagram of the box and expansion beam provided in the embodiments of this application; Figure 3 This is a partial side view structural diagram of the expansion beam provided in an embodiment of this application; Figure 4 This is a partial side view structural diagram of the wedge plate provided in the embodiments of this application; Figure 5 This is a side view assembly diagram of the expansion beam and wedge plate provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the wedge plate provided in the embodiments of this application; Figure 7 This is a schematic diagram of the assembly of the expansion beam and the wedge plate provided in the embodiments of this application; Figure 8 This is a schematic diagram of another partial explosion structure of the battery provided in an embodiment of this application.

[0019] Figure label: 100. Battery; 110. Housing; 120. Battery cell; 130. Expansion beam; 131. Draft surface; 1311. Root slope; 1312. Middle slope; 1313. Upper slope; 140. Wedge plate; 141. First side surface; 142. Second side surface; 1421. Mating slope; 1422. Glue storage tank; 143. Snap-fit ​​groove; 150. Buffer plate. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] The following is for reference. Figures 1-8 This application describes a battery and a vehicle according to embodiments thereof.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a battery 100, which includes: a housing 110, a battery cell 120, an expansion beam 130, and a wedge plate 140.

[0023] The housing 110 has a receiving cavity; the battery cell 120 is disposed in the receiving cavity; the expansion beam 130 is disposed in the receiving cavity and is integrally formed with the housing 110, the side of the expansion beam 130 facing the battery cell 120 is a draft surface 131, the draft surface 131 is set at an angle to the bottom wall of the receiving cavity; a wedge plate 140 is provided between the expansion beam 130 and the battery cell 120, the wedge plate 140 has a first side 141 and a second side 142 facing away from each other in its thickness direction, the first side 141 faces the battery cell 120 and is perpendicular to the bottom wall of the receiving cavity, and the second side 142 is parallel to and fits against the draft surface 131.

[0024] The housing 110 serves as the external load-bearing and protective structure for the battery 100. Internally, it forms a cavity to accommodate the battery cell 120, expansion beam 130, and wedge plate 140. The housing 110 can be manufactured using an integrated die-casting process to meet the requirements of new energy vehicles for lightweight, high structural strength, and high production efficiency of the battery 100. The battery cell 120, located inside the cavity of the housing 110, is the core component for the battery 100 to store and release electrical energy. During charging and discharging, the battery cell 120 undergoes a certain degree of thickness expansion, requiring a stable and vertical support surface to ensure uniform stress during expansion.

[0025] It should be noted that the specific form of the battery cell 120 is not limited, and it can be a square hard-shell battery cell 120, a soft-pack battery cell 120, or a cylindrical battery cell 120, etc.; the number of battery cells 120 is also not limited, and it can be multiple battery cells 120 arranged sequentially in the receiving cavity, or multiple battery cells 120 combined to form a battery cell 120 module.

[0026] The expansion beam 130 is installed inside the housing 110 and is integrally formed with the housing 110. The integral forming structure can improve the overall rigidity of the housing 110, reduce welding or assembly processes, and meet the production requirements of integrated die casting. The surface of the expansion beam 130 facing the cell 120 is a draft surface 131. This draft surface 131 is designed to facilitate smooth demolding after integrated die casting. The draft surface 131 is set at a preset angle with the bottom wall of the receiving cavity. This angle can be set according to the demolding requirements of the die casting mold, for example, set to about 1°, to ensure smooth demolding without excessively occupying the internal space of the receiving cavity.

[0027] It should be noted that the battery 100's housing 110 may include an upper housing 110 and a lower housing 110. The upper end of the lower housing 110 is open, and the expansion beam 130 can be integrally formed within the lower housing 110 for easy integral forming. The upper housing 110 is fixedly installed at the top opening of the lower housing 110 to cooperate with the lower housing 110 to form a sealed receiving cavity. It should be further noted that the upper housing 110 and the lower housing 110 are only in relative positions, not in actual coordinates of up and down. For example, when the battery 100 is installed on a vehicle, the lower housing 110 can face the ground, or vice versa, the upper housing 110 can face the ground.

[0028] A wedge plate 140 is arranged between the expansion beam 130 and the battery cell 120 to compensate for the angular deviation caused by the draft surface 131 of the expansion beam 130. The wedge plate 140 has two opposing sides along its thickness direction: a first side 141 and a second side 142. The first side 141 faces the battery cell 120 and is perpendicular to the bottom wall of the receiving cavity. This perpendicular surface provides uniform and stable support to the battery cell 120, ensuring that the force direction of the battery cell 120 is perpendicular during expansion and preventing uneven loading or localized stress concentration. The second side 142 is parallel to the draft surface 131 of the expansion beam 130 and fits snugly against it. This snug fit ensures a tight fit between the wedge plate 140 and the expansion beam 130, eliminating gaps and improving the overall structural stability and reliability.

[0029] The height of the wedge plate 140 can be basically the same as the height of the expansion beam 130.

[0030] During assembly, the first side 141 of the wedge plate 140 can be attached to the surface of the cell 120, forming a single unit with the cell 120. This unit is then installed into the receiving cavity using a pressing fixture. The thickness variation of the wedge plate 140 offsets the tilt angle of the draft surface 131, allowing the second side 142 to perfectly fit against the surface of the expansion beam 130. This results in the first side 141 forming a flat mounting surface perpendicular to the bottom wall of the receiving cavity. During charging and discharging expansion, the vertical first side 141 provides a uniform reverse constraint force to the cell 120, ensuring its stable position and preventing displacement or uneven compression due to the tilt of the draft surface 131.

[0031] According to the battery 100 provided in the embodiments of this application, the wedge plate 140 and the draft surface 131 cooperate to meet the vertical requirements of the cell 120 mounting surface without machining the expansion beam 130. This eliminates the difficult and time-consuming cutting process and avoids problems such as vibration, broken tools, residual steps, and manual cleaning during processing. While ensuring the stability and structural strength of the battery 100, it significantly reduces processing costs, shortens the production time of a single unit, improves the overall production efficiency of the battery 100, and increases the product yield.

[0032] Please see Figure 1 and Figure 2 In some embodiments, the number of expansion beams 130 is not limited and multiple expansion beams 130 can be provided. Multiple expansion beams 130 are arranged at intervals in the receiving cavity to divide the receiving cavity into multiple receiving spaces, and multiple battery cells 120 are distributed in multiple receiving spaces.

[0033] In some embodiments, the wedge plate 140 can be made of PC sheet (Polycarbonate sheet). PC sheet has good structural strength, insulation performance, and processing performance, which can meet the electrical safety requirements of the battery 100 system. Specifically, the voltage withstand performance of the PC sheet meets the withstand voltage test requirements of 1800V AC, the leakage current is less than 10mA, and the insulation resistance is greater than 600MΩ under the test condition of applying 1000V DC. This can effectively ensure the electrical insulation between the cell 120, the expansion beam 130, and the housing 110, avoid safety hazards such as leakage and short circuit, and improve the safety and reliability of the battery 100 system.

[0034] Please see Figure 3 , Figure 4 and Figure 5 According to some embodiments of this application, the draft surface 131 may include a plurality of draft ramps connected sequentially along its height direction, and the angles between the plurality of ramps and the bottom wall of the receiving cavity increase sequentially along the direction away from the bottom wall of the receiving cavity.

[0035] The draft surface 131 is not a single inclined surface, but is composed of multiple draft inclined surfaces connected sequentially along the height direction of the expansion beam 130. Along the direction away from the bottom wall of the receiving cavity, that is, along the upward extension direction of the expansion beam 130, the included angles between the multiple draft inclined surfaces and the bottom wall of the receiving cavity increase sequentially, so that the expansion beam 130 presents a segmented inclined structure in the height direction, which can better adapt to the demolding requirements in the die casting process, while reducing the risk of tearing on the structural surface during demolding.

[0036] Multiple draft angles can be smoothly connected or connected in a stepped manner, depending on the structure of the die-casting mold. The number of draft angles is not specifically limited; it can be two, three, four, or more. When two draft angles are used, the draft angle closer to the bottom wall of the receiving cavity forms a smaller angle with the bottom wall, while the draft angle farther from the bottom wall forms a larger angle. This two-section structure satisfies the demolding requirements of die casting and facilitates the machining and fitting of the wedge plate 140.

[0037] The second side 142 of the wedge plate 140 can also be configured as multiple mating slopes 1421 corresponding to multiple draft slopes. Each mating slope 1421 is parallel to and fits against the corresponding draft slope, so that the wedge plate 140 is stably fitted onto the draft surface 131 of the expansion beam 130, while ensuring that the first side 141 facing the cell 120 remains perpendicular to the bottom wall of the receiving cavity, providing a stable and reliable vertical support surface for the cell 120.

[0038] The segmented draft angle structure, while meeting the requirements of integrated die casting, further optimizes the structural strength of the expansion beam 130, reduces forming defects that occur when the single angle is at a high height, and facilitates precise matching with the wedge plate 140, further improving the assembly accuracy and structural stability of the battery 100.

[0039] Please see Figure 3 , Figure 4 and Figure 5 According to some embodiments of this application, the draft surface 131 may include three draft ramps.

[0040] The three draft ramps are arranged in the same direction as the height of the expansion beam 130. Starting from the end near the bottom wall of the receiving cavity, they extend upwards to the top of the expansion beam 130. Each draft ramp forms a certain angle with the bottom wall of the receiving cavity, and the angle gradually increases. This gradient angle design can adapt to the demolding trajectory of the integrated die-casting mold, further improving the smoothness of demolding, while taking into account the overall structural strength of the expansion beam 130 and avoiding local structural weakness of the expansion beam 130 due to excessively large single angle.

[0041] Correspondingly, the second side 142 of the wedge plate 140 must correspond one-to-one with the three draft slopes. That is, the second side 142 of the wedge plate 140 is also provided with three mating slopes 1421. The inclination angle of each mating slope 1421 is completely consistent with the corresponding draft slope, ensuring that each mating slope 1421 can fit tightly with the corresponding draft slope, thereby ensuring the stability of the wedge plate 140 after overall installation. At the same time, it ensures that the first side 141 of the wedge plate 140 facing the cell 120 always remains perpendicular to the bottom wall of the receiving cavity, providing uniform and stable vertical support for the cell 120 and meeting the force requirements of the cell 120 during charging and discharging expansion.

[0042] Please see Figure 3 , Figure 4 and Figure 5 According to some embodiments of this application, along the direction away from the bottom wall of the receiving cavity, the three draft slopes can be a root slope 1311, a middle slope 1312, and an upper slope 1313, respectively. The angle between the root slope 1311 and the bottom wall of the receiving cavity can be 86°-88°, the angle between the middle slope 1312 and the bottom wall of the receiving cavity can be 88°-88.5°, and the angle between the upper slope 1313 and the bottom wall of the receiving cavity can be 88.5°-89°.

[0043] Along the direction away from the bottom wall of the receiving cavity, the three draft surfaces are, in sequence, the root slope 1311, the middle slope 1312, and the upper slope 1313. The root slope 1311 is located at one end of the expansion beam 130 near the bottom wall of the receiving cavity, the middle slope 1312 is located between the root slope 1311 and the upper slope 1313, and the upper slope 1313 is located at the top of the expansion beam 130 away from the bottom wall of the receiving cavity. The three surfaces are connected sequentially along the height direction of the expansion beam 130 to form a complete draft surface 131.

[0044] The angle between the root inclined surface 1311 and the bottom wall of the receiving cavity is set between 86° and 88°. This angle range corresponds to a draft angle of 2° to 4°, which ensures that the root of the expansion beam 130 can be smoothly demolded during die casting, while also ensuring that the root structure has sufficient structural strength and avoiding insufficient root strength due to an excessively large draft angle. For example, the draft angle of the root inclined surface 1311 can be 2°, 2.5°, 3°, 3.5°, 4°, or other angles between 2° and 4°.

[0045] The angle between the middle inclined surface 1312 and the bottom wall of the receiving cavity is set between 88° and 88.5°, corresponding to a draft angle of 1.5° to 2°. This draft angle is further reduced compared to the root inclined surface 1311, which maintains the smooth demolding effect and gradually reduces the inclination of the expansion beam 130 towards the battery cell 120, providing a more regular space for the installation of the battery cell 120. For example, the draft angle of the middle inclined surface 1312 can be 1.5°, 1.6°, 1.7°, 1.8°, 1.9°, 2°, or other angles between 1.5° and 2°.

[0046] The angle between the upper inclined surface 1313 and the bottom wall of the receiving cavity is set between 88.5° and 89°, corresponding to a draft angle of 1° to 1.5°. The draft angle is minimal, closer to a vertical state, which facilitates the mating with the end of the battery cell 120, while also meeting the demolding requirements of die casting. For example, the draft angle of the upper inclined surface 1313 can be 1°, 1.1°, 1.2°, 1.3°, 1.4°, 1.5°, or other angles between 1° and 1.5°.

[0047] Understandably, the second side 142 of the wedge plate 140 is also configured with three mating surfaces, which are parallel and fit against the root inclined surface 1311, the middle inclined surface 1312, and the upper inclined surface 1313, respectively. The gradual change of the included angle cancels out the inclination of the draft angle, so that the first side 141 of the wedge plate 140 remains perpendicular to the bottom wall of the receiving cavity, providing a stable and vertical support surface for the battery cell 120.

[0048] It should be noted that the battery cell 120 generates an expansion force during the charging and discharging process. This expansion force acts perpendicularly on the first side 141 of the wedge plate 140 and is transmitted to the draft surface 131 of the expansion beam 130 through the wedge plate 140.

[0049] In a single inclined plane structure, the expansion force is decomposed into a normal force perpendicular to the draft surface 131 and a shear force parallel to the draft surface 131. The shear force is directed upward along the draft surface 131. When the shear force is greater than the interface friction force, the wedge plate 140 may slide upward or loosen.

[0050] In this application, the draft surface 131 adopts a three-section structure: a root slope 1311, a middle slope 1312, and an upper slope 1313. Along the direction away from the bottom wall, the angle between the draft surface 131 and the bottom wall increases sequentially, while the draft angle decreases sequentially. Under the same expansion force of the battery cell 120, the closer to the upper part of the expansion beam 130, the closer the draft surface 131 is to being vertical, and the smaller the shear force component. While the root slope 131, closer to the bottom, has a relatively larger draft angle, it bears a smaller proportion of the expansion force transmission, and the bottom region has higher structural stiffness and stronger constraint.

[0051] This segmented gradient draft angle arrangement can reduce the average upward shear component of the wedge plate 140 as a whole. At the same time, by bonding multiple surfaces, the contact area and frictional resistance between the wedge plate 140 and the expansion beam 130 are increased, making the wedge plate 140 less prone to upward slippage and misalignment when subjected to expansion force. This improves the assembly stability of the wedge plate 140 and ensures the long-term reliability of the battery cell 120 support structure.

[0052] Please see Figure 4 and Figure 5 According to some embodiments of this application, the wedge plate 140 may be provided with an adhesive storage tank 1422 on one side of the second side 142, and the adhesive storage tank 1422 is provided with adhesive, and the wedge plate 140 is bonded to the expansion beam 130 by the adhesive.

[0053] The adhesive storage tank 1422 can be a groove structure, providing a stable space for the adhesive and ensuring its even distribution between the wedge plate 140 and the expansion beam 130, preventing adhesive overflow or uneven distribution. The number of adhesive storage tanks 1422 is not specifically limited; it can be two, three, four, or more, or it can be a continuous elongated trough. When multiple adhesive storage tanks 1422 are used, they can be arranged at intervals along the height direction of the wedge plate 140 to further improve the uniformity and reliability of the bonding.

[0054] Adhesive is filled in the adhesive reservoir 1422 and contacts the draft surface 131 of the expansion beam 130. The adhesive force of the adhesive firmly fixes the wedge plate 140 to the expansion beam 130, forming a stable integral structure between the wedge plate 140 and the expansion beam 130. The adhesive reservoir 1422 increases the contact area between the adhesive and the wedge plate 140, while restricting the flow of the adhesive during the curing process, ensuring uniform bonding thickness at the bonding interface, and improving bonding strength and stability.

[0055] By fixing the wedge plate 140 to the expansion beam 130 by adhesive bonding, the connection reliability between the wedge plate 140 and the expansion beam 130 can be further improved. When the cell 120 expands and generates force, the adhesive can provide sufficient adhesion to resist the upward shear force on the wedge plate 140, reducing the risk of slippage or loosening of the wedge plate 140. At the same time, the structure of the adhesive reservoir 1422 can make the bonding more firm and the fit tighter, further ensuring the stability of the overall structure of the battery 100.

[0056] Please see Figure 4 and Figure 5 According to some embodiments of this application, the second side surface 142 includes a plurality of mating slopes 1421 corresponding one-to-one with a plurality of draft slopes, and a glue storage groove 1422 is provided at the connection of adjacent mating slopes 1421.

[0057] The second side 142 of the wedge plate 140 is provided with multiple mating inclined surfaces 1421. The multiple mating inclined surfaces 1421 correspond one-to-one with the multiple draft inclined surfaces on the expansion beam 130. The inclination angle of each mating inclined surface 1421 is consistent with the corresponding draft inclined surface, so that the mating inclined surface 1421 can be parallel to each other and fit tightly with the draft inclined surface, ensuring the mating accuracy and fitting stability between the wedge plate 140 and the expansion beam 130.

[0058] A glue storage groove 1422 is provided at the connection of adjacent mating inclined surfaces 1421. The glue storage groove 1422 extends along the junction of the mating inclined surfaces 1421. This position can fully accommodate the adhesive without damaging the mating surface between the mating inclined surface 1421 and the draft angle, ensuring that the mating area between the two is not affected. The glue storage groove 1422 can be a long strip-shaped groove structure, and the number corresponds to the connection position between the mating inclined surfaces 1421. When there are three mating inclined surfaces 1421, two glue storage grooves 1422 can be provided at the connection between adjacent mating inclined surfaces 1421. In some examples, the cross-section of the glue storage groove 1422 can be semi-circular.

[0059] The adhesive is contained inside the adhesive reservoir 1422. When the wedge plate 140 is assembled to the draft surface 131 of the expansion beam 130, the adhesive in the adhesive reservoir 1422 can fill the gap between the adjacent mating inclined surface 1421 and the draft inclined surface, making the adhesive distribution more uniform. At the same time, it increases the contact area between the adhesive and the expansion beam 130 and the wedge plate 140, thereby improving the bonding strength. The mating structure of the mating inclined surface 1421 and the draft inclined surface can position and limit the wedge plate 140, reducing the offset during the assembly process, while the mating of the adhesive reservoir 1422 and the adhesive can further improve the connection firmness.

[0060] Please see Figure 6 and Figure 7 According to some embodiments of this application, the end of the wedge plate 140 away from the bottom wall of the receiving cavity may be provided with a snap-fit ​​groove 143, and the end of the expansion beam 130 away from the bottom wall of the receiving cavity is embedded in the snap-fit ​​groove 143.

[0061] The overall height of the wedge plate 140 is basically the same as the height of the expansion beam 130. The end of the wedge plate 140 away from the bottom wall of the receiving cavity is the top position, and a snap-fit ​​groove 143 is provided at this top position. The opening of the snap-fit ​​groove 143 is set towards the bottom wall of the receiving cavity. The snap-fit ​​groove 143 can be extended outward from the top of the wedge plate 140 near the second side 142 to form an extension structure. The extension structure downward surrounds the main body of the wedge plate 140 to form the snap-fit ​​groove 143. The structure is simple and easy to form.

[0062] The end of the expansion beam 130 furthest from the bottom wall of the receiving cavity can be embedded into the locking groove 143. Through the engagement between the locking groove 143 and the end of the expansion beam 130, the wedge plate 140 is positioned in the height direction, restricting the movement of the wedge plate 140 in the Z direction and ensuring the accuracy of the wedge plate 140's assembly position. The locking groove 143 and the end of the expansion beam 130 can adopt a clearance fit or a transition fit, which facilitates assembly and ensures reliable positioning.

[0063] During assembly, the snap-fit ​​groove 143 can quickly position the wedge plate 140 axially, reducing assembly difficulty and improving assembly efficiency. When the cell 120 expands and generates force, the snap-fit ​​engagement between the snap-fit ​​groove 143 and the end of the expansion beam 130 can further restrict the upward movement of the wedge plate 140. Combined with the adhesive effect, they jointly resist the shear force brought about by the expansion of the cell 120, avoiding problems such as slippage or loosening of the wedge plate 140, further improving the stability and reliability of the wedge plate 140 installation, and ensuring the overall structural stability of the battery 100.

[0064] Please see Figure 1 , Figure 2 and Figure 7According to some embodiments of this application, the length of the wedge plate 140 may be the same as the length of the expansion beam 130.

[0065] The length of the wedge plate 140 is consistent with the length of the expansion beam 130, so that the wedge plate 140 can completely cover the draft surface 131 of the expansion beam 130 facing the cell 120, forming a continuous and complete vertical support surface along the entire length of the expansion beam 130, providing uniform and stable support for the cell 120.

[0066] The wedge plate 140 is fitted with the corresponding position of the expansion beam 130 at each position along its own length direction, and the edges of the two are aligned with each other in the length direction. There is no local protrusion or depression, which can ensure the neatness of the appearance after assembly and avoid problems such as weak local support and excessive gap due to inconsistent length.

[0067] During the charging and discharging expansion of the cell 120, the consistent length setting can ensure that the expansion force is evenly transmitted along the entire length of the expansion beam 130, avoiding local stress concentration. At the same time, it further improves the stability of the fit between the wedge plate 140 and the expansion beam 130, preventing the wedge plate 140 from shifting or shaking in the length direction, and ensuring the reliability and consistency of the overall structure of the battery 100.

[0068] Please see Figure 8 According to some embodiments of this application, the battery 100 may also include a buffer plate 150, and the buffer plate 150 may be provided between the wedge plate 140 and the cell 120.

[0069] The buffer plate 150 is arranged between the wedge plate 140 and the cell 120 to buffer the expansion force generated during the charging and discharging of the cell 120, protect the structure of the cell 120 and the wedge plate 140, and further improve the reliability and service life of the battery 100.

[0070] In some examples, the buffer plate 150 can be made of MPP sheet (Microporous Polypropylene Foam Sheet), which has excellent toughness, corrosion resistance, and buffering performance. It is also thin and lightweight, without adding to the overall weight of the battery 100, thus meeting the lightweight requirements of new energy vehicle batteries 100. Furthermore, it has good chemical stability and will not react chemically with the cell 120 or the wedge plate 140, ensuring long-term stable buffering performance. The thickness of the MPP sheet can be flexibly set according to buffering requirements, preferably using a thin structure to ensure buffering effect without excessively occupying internal space of the cavity, thus avoiding affecting the installation layout of the cell 120. In some examples, the thickness of the MPP sheet can be 2mm.

[0071] A buffer plate 150 is attached to the first side 141 of the wedge plate 140 and is in contact with the surface of the battery cell 120, forming a buffer layer between the wedge plate 140 and the battery cell 120. During charging and discharging, the battery cell 120 will undergo periodic expansion and contraction. The impact force generated during expansion will first act on the buffer plate 150. The buffer plate 150 absorbs part of the impact force through its own elastic deformation, preventing the impact force from being directly transmitted to the wedge plate 140 and the expansion beam 130, reducing the stress load between the wedge plate 140 and the expansion beam 130, and also preventing the surface of the battery cell 120 from being worn or damaged due to direct contact with the rigid wedge plate 140, thus protecting the structural integrity of the battery cell 120.

[0072] In addition, the buffer plate 150 can fill the tiny gap between the first side 141 of the wedge plate 140 and the cell 120, further ensuring that the cell 120 is subjected to uniform force. At the same time, it helps to fix the position of the wedge plate 140. Together with the adhesive, snap-fit ​​groove 143 and other structures, it improves the installation stability of the wedge plate 140, reduces the risk of slippage of the wedge plate 140, and comprehensively optimizes the structural reliability and safety of the battery 100.

[0073] It should be noted that during assembly, the buffer plate 150 can be clamped between the wedge plate 140 and the battery cell 120, and together they are assembled into the receiving cavity as a whole by the extrusion tool.

[0074] Based on the same considerations, this application also provides a vehicle that includes a battery 100 as described in any of the above technical solutions, the battery 100 being used to provide electrical energy to the vehicle.

[0075] It should be noted that, since the vehicle provided in this application embodiment includes a battery 100 as described in any of the above technical solutions, it has the technical features and effects of a battery 100 as described in any of the above technical solutions.

[0076] As a core power supply component for vehicles, the battery 100 provides stable power support for vehicle operation and the operation of onboard electronic equipment, meeting the needs of new energy vehicles.

[0077] The vehicle can be any type of new energy vehicle that relies on electric power, such as a pure electric vehicle or a hybrid electric vehicle. The vehicle's body structure and the assembly method of the battery 100 can be flexibly adjusted according to the vehicle model design. It is only necessary to ensure that the battery 100 can be stably installed in the vehicle's preset installation position (such as the vehicle chassis area) and that the power output terminal of the battery 100 is electrically connected to the vehicle's drive system, control system, etc., so as to achieve effective power transmission.

[0078] Because the battery 100 used in this vehicle, through the cooperation of the wedge plate 140 and the draft surface 131 of the expansion beam 130, effectively compensates for the contradiction between the draft surface 131 of the expansion beam 130 and the vertical installation requirement of the battery cell 120 in the integrated die-cast housing 110, there is no need to perform complex machining on the expansion beam 130, which reduces the production and processing cost and time of the battery 100, and improves the production efficiency and product yield of the battery 100. At the same time, through the cooperation of multi-segment draft slope, glue storage tank 1422 bonding, and snap-fit ​​groove 143 positioning, the problem of easy slippage of the wedge plate 140 is effectively solved, ensuring the stability and reliability of the battery 100 structure. The setting of the buffer plate 150 further protects the battery cell 120, extends the service life of the battery 100, and comprehensively improves the overall performance of the battery 100.

[0079] Therefore, vehicles integrating this battery 100 not only receive a stable and sufficient power supply, ensuring normal driving range and operational stability, but also indirectly improve the overall structural rigidity, lightweighting, and safety of the vehicle by leveraging the structural advantages of the battery 100. Simultaneously, this reduces production costs and enhances the vehicle's market competitiveness. Furthermore, the integrated die-cast structure of the battery 100 aligns with the trend of integrated vehicle manufacturing, further reducing the number of vehicle parts and improving production efficiency.

[0080] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0081] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0082] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0083] In the description of this application, "multiple" means two or more.

[0084] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0085] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0087] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that, include: The box-shaped enclosure has a receiving cavity; The battery cell is disposed within the receiving cavity; An expansion beam is disposed within the receiving cavity and integrally formed with the housing. The side of the expansion beam facing the battery cell is a draft surface, and the draft surface is set at an angle to the bottom wall of the receiving cavity. A wedge plate is provided between the expansion beam and the battery cell. The wedge plate has a first side and a second side facing away from each other in its thickness direction. The first side faces the battery cell and is perpendicular to the bottom wall of the receiving cavity. The second side is parallel to and fits against the draft surface.

2. The battery according to claim 1, characterized in that, The draft surface includes a plurality of draft ramps connected sequentially along its height direction, and the angles between the plurality of ramps and the bottom wall of the receiving cavity increase sequentially along the direction away from the bottom wall of the receiving cavity.

3. The battery according to claim 2, characterized in that, The draft surface includes three draft ramps.

4. The battery according to claim 3, characterized in that, Along the direction away from the bottom wall of the receiving cavity, the three draft slopes are a root slope, a middle slope, and an upper slope. The angle between the root slope and the bottom wall of the receiving cavity is 86°-88°, the angle between the middle slope and the bottom wall of the receiving cavity is 88°-88.5°, and the angle between the upper slope and the bottom wall of the receiving cavity is 88.5°-89°.

5. The battery according to claim 2, characterized in that, The wedge plate has an adhesive reservoir on one side of the second side, and the adhesive reservoir contains adhesive. The wedge plate is bonded to the expansion beam through the adhesive.

6. The battery according to claim 5, characterized in that, The second side includes multiple mating slopes that correspond one-to-one with the multiple draft slopes, and the glue storage groove is provided at the connection of adjacent mating slopes.

7. The battery according to any one of claims 1-6, characterized in that, The wedge plate has a snap-fit ​​groove at one end away from the bottom wall of the receiving cavity, and the end of the expansion beam away from the bottom wall of the receiving cavity is embedded in the snap-fit ​​groove.

8. The battery according to any one of claims 1-6, characterized in that, The length of the wedge plate is the same as the length of the expansion beam.

9. The battery according to any one of claims 1-6, characterized in that, It also includes a buffer plate, which is provided between the wedge plate and the battery cell.

10. A vehicle, characterized in that, Includes a battery as described in any one of claims 1-9, the battery being used to provide electrical energy to the vehicle.

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