Battery and electric equipment

Abstract

The invention relates to the technical field of battery structures, and discloses a battery and electric equipment, and the battery comprises a box body, and a cross beam, a battery cell group, an elastic rubber baffle plate and a side cold plate which are all mounted in the box body; the battery cell group comprises end part end plates, and the end part end plates are provided with inserting grooves matched with the elastic rubber blocking plates or an inserting groove is formed between every two adjacent end part end plates; the elastic rubber blocking plate is provided with a sealing insertion groove, the side cold plate is in sealing insertion connection with the sealing insertion groove, the elastic rubber blocking plate is inserted into the insertion groove, and the elastic rubber blocking plate seals a gap between the side wall of the insertion groove and the side cold plate; and the two opposite side surfaces of the elastic glue baffle plate are respectively attached to the side surface of the cross beam and the battery cell in the battery cell group in a sealing manner. According to the battery and the electric equipment disclosed by the invention, the structural adhesive can be better blocked at a proper position, the outflow possibility of the structural adhesive is reduced, and the reliability of adhesive fixation can be favorably improved.

Description

Technical Field

[0001] This invention relates to the field of battery structure technology, and in particular to a battery and electrical device. Background Technology

[0002] The battery includes a casing and a cell assembly installed in the casing. The cell assembly can be fixed in different ways, such as mechanical fixing, adhesive fixing, and a combination of fixing methods.

[0003] When the battery pack is working, each individual battery cell generates heat, so side cooling plates are needed to cool the sides of the cells to prevent the battery pack from overheating. However, if the side cooling plates are installed in the enclosure and adhesive is used for fixing, the structural adhesive is likely to flow or seep out along the side of the side cooling plate, which will affect the actual adhesive fixing effect.

[0004] Therefore, it is necessary to design a battery and electrical device that can better seal the structural adhesive in the appropriate position, reduce the possibility of structural adhesive leakage, and help improve the reliability of adhesive fixation.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Summary of the Invention

[0006] This invention provides a battery and electrical device that can better seal structural adhesive in the appropriate position, reduce the possibility of structural adhesive leakage, and improve the reliability of adhesive fixation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A battery includes a housing, and a crossbeam, a cell assembly, a flexible baffle plate, and a side cooling plate, all installed in the housing. The battery cell assembly includes an end plate, and the end plate has an insertion slot that matches the elastic baffle plate or an insertion slot is formed between two adjacent end plates. The elastic baffle plate has a sealing insertion groove, the side cold plate is sealed and inserted into the sealing insertion groove, and the elastic baffle plate is inserted into the insertion groove, the elastic baffle plate seals the gap between the side wall of the insertion groove and the side cold plate. The two opposing surfaces of the elastic baffle plate are respectively sealed and attached to the side of the crossbeam and the battery cells in the battery cell assembly.

[0008] Optionally, the elastic baffle includes an elastic plate layer and a sealing foam layer; The sealing insertion groove includes a first groove section located in the elastic plate layer and a second groove section located in the sealing foam layer. The sealing foam layer protrudes from the groove wall of the first groove section to seal against the side cold plate.

[0009] Optionally, the elastic baffle plate includes two sealing arms spaced apart; In its natural state, the elastic baffle plate is V-shaped or Y-shaped under the elastic force of the elastic plate layer, and the two sealing arms are inverted V-shape. When the side cold plate is sealed and inserted into the sealing groove and the elastic baffle is inserted into the insertion groove, the two sealing arms located on opposite sides of the elastic baffle are parallel to each other.

[0010] Optionally, fastening protrusions are provided on both sides of the groove opening of the second groove section; When the side cold plate is inserted into the sealing insertion groove and the elastic baffle is inserted into the insertion groove, the fastening protrusion fastens to the top of the side cold plate to form an anti-detachment structure.

[0011] Optionally, the crossbeam is provided with a mounting groove, a collector is installed in the mounting groove, the collector is connected to the side cold plate, and the collector is fixedly connected to the crossbeam; The elastic baffle and the end plate together cover the mounting groove.

[0012] Optionally, the battery also includes a top baffle strip; The battery cell assembly includes at least two rows of battery cells, with the top baffle strip installed between two adjacent rows of battery cells, and the end of the top baffle strip abutting against the elastic baffle plate. The width of the top baffle strip is equal to the width between two adjacent rows of battery cells, and the bottom surface of the top baffle strip is attached to the top surface of the side cold plate.

[0013] Optionally, a silicone U-shaped frame is installed between the large surfaces of two adjacent battery cells, and the bottom of the silicone U-shaped frame forms an adhesive space with the bottom plate of the housing. At least part of the bottom of the silicone U-shaped frame forms a protrusion, and the bottom surface of the protrusion is flush with the bottom surface of the battery cell and adheres to the bottom plate of the housing to seal the adhesive space. An injection hole is formed between the silicone ring frame and the side cold plate. Structural adhesive is injected into the injection holes on opposite sides of the side cold plate in an alternating manner along the length of the side cold plate.

[0014] Optionally, the depth of the insertion slot is greater than the height of the elastic baffle. The bottom of the elastic baffle plate forms an insertion guide portion, and the width of the insertion guide portion decreases as it moves further away from the sealing insertion groove.

[0015] Optionally, the insertion slot is a stepped slot, which includes a first slot segment and a second slot segment arranged along the thickness direction of the end plate. The outer edge of the sealing foam layer extends beyond the outer edge of the elastic plate layer, and the sealing foam layer elastically compresses the groove wall of the first groove segment, while the elastic plate layer adheres to the groove wall of the second groove segment.

[0016] Optionally, the end plate includes an insulating layer and a heat-insulating buffer layer, the first groove is formed on the heat-insulating buffer layer, and the second groove is formed on the insulating layer.

[0017] An electrical device comprising a battery as described in any of the preceding claims.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The battery and electrical device provided by this invention, through a clever structural design, have a sealing insertion groove formed on the elastic baffle plate. The side cold plate is inserted into the sealing insertion groove, and the elastic baffle plate is inserted into the insertion groove. The elastic baffle plate seals the gap between the insertion groove and the side cold plate. The elastic baffle plate and the end plate together constitute a sealing assembly. The end plate keeps the elastic baffle plate in a proper position, reducing the possibility of structural adhesive flowing out or seeping along the outer surface of the side cold plate. This keeps the structural adhesive in a proper position and helps improve the reliability of adhesive fixation.

[0019] The present invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and following detailed description, which together serve to explain the particular principles of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a top view schematic diagram of the battery provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the middle battery along line AA; Figure 3 This is a schematic diagram of the three-dimensional assembly structure of the battery provided in an embodiment of the present invention; Figure 4 yes Figure 3 A magnified view of the battery at position A; Figure 5This is a schematic diagram of the elastic baffle plate provided in the embodiment of the present invention in its natural state; Figure 6 This is a schematic diagram of the final form of the elastic baffle plate provided in the embodiment of the present invention after installation; Figure 7 yes Figure 5 A three-dimensional structural diagram of a medium-elasticity baffle plate; Figure 8 yes Figure 6 A three-dimensional structural diagram of a medium-elasticity baffle plate; Figure 9 This is a schematic diagram of the cross-sectional structure of the insertion slot provided in an embodiment of the present invention.

[0022] Figure 10 This is a schematic diagram of the installation structure of the crossbeam, end plate, and current collector provided in an embodiment of the present invention; Figure 11 yes Figure 10 A schematic diagram of the three-dimensional structure of the middle structure from another viewpoint; Figure 12 yes Figure 3 An enlarged view of position B in the middle; Reference numerals: 1. Housing; 2. Crossbeam; 21. Mounting groove; 3. Battery cell assembly; 31. End plate; 311. Insulation layer; 312. Heat insulation buffer layer; 32. Insertion groove; 3201. First groove section; 3202. Second groove section; 4. Elastic baffle plate; 41. Elastic plate layer; 42. Sealing foam layer; 421. Fastening protrusion; 401. Sealing insertion groove; 4011. First groove section; 4021. Second groove section; 5. Side cooling plate; 6. Current collector; 7. Top baffle strip; 8. Silicone U-shaped frame; 81. Protrusion; 810. Injection hole. Detailed Implementation

[0023] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0024] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0025] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0026] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0027] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0028] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0029] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0030] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] Example 1 In view of the aforementioned defects in existing batteries, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a solution to the defects in the existing technology and make the battery more practical. After continuous research, design, and repeated prototype production and improvement, this invention with real practical value was finally created.

[0033] Please refer to Figures 1 to 8 , Figures 10 to 12 This invention provides a battery comprising a housing 1, a crossbeam 2, a cell assembly 3, an elastic baffle plate 4, and a side cooling plate 5, all installed within the housing 1. The cell assembly 3 includes an end plate 31, which has an insertion groove 32 that matches the elastic baffle plate 4, or an insertion groove 32 is formed between two adjacent end plates 31. The elastic baffle plate 4 has a sealing insertion groove 401, and the side cooling plate 5 is sealed and inserted into the sealing insertion groove 401. The elastic baffle plate 4 is inserted into the insertion groove 32, sealing the gap between the insertion groove 32 and the side cooling plate 5. The opposite two surfaces of the elastic baffle plate 4 are respectively sealed and attached to the side of the crossbeam 2 and the cell in the cell assembly 3.

[0034] In this embodiment, the battery features a clever structural design with a sealing insertion groove 401 on the elastic baffle plate 4. The side cooling plate 5 is inserted into the sealing insertion groove 401, and the elastic baffle plate 4 is inserted into the insertion groove 32 of the end plate 31. The elastic baffle plate 4 seals the gap between the insertion groove 32 and the side cooling plate 5. The elastic baffle plate 4 and the end plate 31 together constitute a sealing assembly. The end plate 31 keeps the elastic baffle plate 4 in a suitable position, reducing the possibility of structural adhesive flowing out or seeping along the outer side of the side cooling plate 5. This keeps the structural adhesive inside and prevents leakage, which is beneficial to improving the reliability of adhesive bonding.

[0035] It should be noted that if a cell group 3 includes multiple rows of cells, with cells in one row arranged along the stacking direction (e.g., longitudinally) and multiple rows arranged along a direction perpendicular to the stacking direction (e.g., laterally), and a side cooling plate 5 is provided between two adjacent rows of cells, then the length direction of the side cooling plate 5 is the stacking direction of the cells. In this case, the end plate 31 can be provided with an insertion slot 32 for matching the elastic baffle plate 4. If the cell group 3 includes only one row of cells, and multiple cell groups 3 are arranged along a direction perpendicular to the stacking direction, then an insertion slot 32 can be formed between two adjacent end plates 31, i.e., an insertion slot 32 is formed between two adjacent cell groups 3. The elastic baffle plate 4 is inserted into the insertion slot 32, and the elastic baffle plate 4 abuts against the crossbeam 2. The elastic baffle plate 4 and the crossbeam 2 together constitute a sealing assembly, reducing the possibility of structural adhesive overflow or outflow, and the crossbeam 2 more stably maintains the position of the elastic baffle plate 4, improving the sealing reliability.

[0036] It should also be noted that the two opposite surfaces of the elastic baffle plate 4 are respectively sealed and attached to the side of the crossbeam 2 and the battery cells in the battery cell group 3. The elastic baffle plate 4 and the crossbeam 2 form a sealing structure with better sealing effect, which can effectively improve the sealing effect. At the same time, it can ensure the structural stability of the elastic baffle plate 4 itself, so as not to shift or deform, and avoid the side cold plate 5 from tilting in the battery cell stacking direction or the vertical stacking direction, thus ensuring the tightness of the side cold plate 5 and the battery cells.

[0037] Optionally, the elastic baffle 4 includes an elastic plate layer 41 and a sealing foam layer 42; the sealing insertion groove 401 includes a first groove section 4011 located in the elastic plate layer 41 and a second groove section 4021 located in the sealing foam layer 42, the sealing foam layer 42 protruding from the groove wall of the first groove section 4011 to seal against the side cold plate 5. The first groove section 4011 and the second groove section 4021 are arranged opposite to each other along the thickness direction of the elastic baffle 4, so that the side cold plate 5 can be inserted into the first groove section 4011 and the second groove section 4021 along its length, and the sealing foam layer 42 achieves a limiting seal.

[0038] Specifically, in actual assembly, the side cold plate 5 is sealed and inserted into the sealing groove 401. At this time, the side cold plate 5 compresses the sealing foam layer 42, and the portion of the sealing foam layer 42 protruding from the first groove section 4011 better fits the opposite sides and bottom of the side cold plate 5, thereby achieving sealing and limiting of the side cold plate 5. Typically, the elastic plate layer 41 may or may not contact the side cold plate 5. Of course, sealing the side cold plate 5 with the elastic plate layer 41 provides better sealing and support, but it will appropriately increase the difficulty of installation. Only when the sealing foam layer 42 is in contact with the side cold plate 5 is the installation easier and the sealing effect is also better. It should be noted that, compared to the elastic plate layer 41, the sealing foam layer 42 is more prone to elastic deformation.

[0039] Optionally, the elastic baffle 4 includes two spaced-apart sealing arms 4001; in its natural state, the elastic baffle 4 is V-shaped or Y-shaped under the elastic force of the elastic plate layer 41, and the two sealing arms 4001 are inverted V-shape; when the side cold plate 5 is sealed and inserted into the sealing insertion groove 401 and the elastic baffle 4 is inserted into the insertion groove 32, the two sealing arms 4001 located on opposite sides of the elastic baffle 4 are parallel to each other. Figures 4 to 8 As shown, in its natural state, the elastic baffle 4, under the elastic force of the elastic plate layer 41, forms a V-shape or Y-shape, making it easier for the side cold plate 5 to be inserted into the sealing insertion groove 401 first, which significantly reduces the difficulty of inserting the side cold plate 5. After the side cold plate 5 is inserted into the sealing insertion groove 401, the elastic baffle 4 is inserted into the insertion groove 32. During the insertion of the elastic baffle 4 into the insertion groove 32, guided by the side wall of the insertion groove 32, the two inverted V-shaped elastic sealing arms 4001 gradually converge to form a sealing insertion groove 401 that fits the side cold plate 5, that is, the baffle 4... Figure 5 The shape gradually becomes Figure 6 The shape of the elastic baffle plate 4 and the gap between the side wall of the insertion groove 32 and the side cold plate 5 ensure the sealing and limiting effect of the side cold plate 5. In the thickness direction of the side cold plate 5, the two relatively parallel sealing arms 4001 can ensure the stability of the side cold plate 5 and prevent the side cold plate 5 from tilting between adjacent rows of cells, thus affecting the heat exchange effect with the cells. At the same time, the bottom of the first groove section 4011 and the second groove section 4021 can support the bottom of the side cold plate 5, preventing the side cold plate 5 from tilting in the cell stacking direction and ensuring heat exchange uniformity. It should be noted that the elastic baffle plate 4 can also be inserted into the insertion groove 32 first, and then the side cold plate 5 can be installed into the sealing insertion groove 401 to form the above structure. This application does not limit the installation method.

[0040] In the structure of this embodiment, the elastic baffle plate 4 and the elastic plate layer 41 are V-shaped or Y-shaped under the elastic force, which further simplifies the assembly steps and avoids the possibility that the side cold plate 5 is difficult to seal the insertion groove 401.

[0041] Optionally, fastening protrusions 421 are provided on both sides of the groove opening of the second groove section 4021. When the side cold plate 5 is inserted into the sealing insertion groove 401 and the elastic baffle plate 4 is inserted into the insertion groove 32, the fastening protrusions 421 fasten onto the top of the side cold plate 5 to form an anti-detachment structure. Specifically, the fastening protrusions 421 not only provide an anti-detachment effect after installation, but also prevent improper assembly during installation. For example, if the side cold plate 5 is not fully inserted into the sealing insertion groove 401, that is, if the bottom of the side cold plate 5 is not sealed against the bottom of the sealing insertion groove 401, the fastening protrusions 421 will abut against the side of the side cold plate 5 instead of the top, forming an assembly error that is easily noticed by the assembly personnel. Therefore, the fastening protrusions 421 also have the effect of improving the assembly yield.

[0042] Optionally, the crossbeam 2 is provided with an installation groove 21, in which a collector 6 is installed. The collector 6 is connected to the side cold plate 5 and is fixedly connected to the crossbeam 2 to ensure the installation stability of the side cold plate 5. The elastic baffle plate 4 and the end plate 31 together cover the installation groove 21.

[0043] It should be further noted that the mounting groove 21 can accommodate the current collector 6, and the current collector 6 does not exceed the mounting groove 21, to avoid the top of the current collector 6 protruding too much and increasing the overall volume of the battery. The current collector 6 can input cooling medium to the side cold plate 5, and can also be used to output the cooled medium after it has been heated in the side cold plate 5. The elastic baffle plate 4 and the end plate 31 together cover the mounting groove 21, as shown in the reference. Figure 10 and Figure 11 As shown, there is no need to design additional special shielding components. At the same time, the shielding areas of the two are reasonably allocated. The area of ​​the end plate 31 is increased to reduce the area of ​​the elastic baffle 4. Under the premise of ensuring the shielding effect, the structural design of the elastic baffle 4 is simplified.

[0044] Optionally, the battery also includes a top baffle strip 7; the cell pack 3 includes at least two rows of cells, with a top baffle strip 7 installed between adjacent rows of cells, and the end of the top baffle strip 7 abutting against the elastic baffle plate 4; the width of the top baffle strip 7 is equal to the width between adjacent rows of cells, and the bottom surface of the top baffle strip 7 is in contact with the top surface of the side cold plate 5.

[0045] Specifically, the width of the top adhesive strip 7 is equal to the distance between two adjacent rows of cells, and the height is the vertical distance between the upper end of the side cold plate and the top cover of the cell. This can help reduce the amount of structural adhesive injected, while preventing the structural adhesive from overflowing onto the cell and contaminating the cell terminals.

[0046] Optionally, refer to Figure 2 and Figure 12 As shown, a silicone U-shaped frame 8 is installed between the large surfaces of two adjacent battery cells, and the bottom of the silicone U-shaped frame 8 forms a space for adhesive with the bottom plate of the housing 1. At least part of the bottom of the silicone U-shaped frame 8 forms a protrusion 81, and the bottom surface of the protrusion 81 is flush with the bottom surface of the battery cell and fits against the bottom plate of the housing 1 to seal the space for adhesive. An injection hole 810 is formed between the silicone U-shaped frame 8 and the side cooling plate 5. Along the length direction of the side cooling plate 5, the injection holes 810 on opposite sides of the side cooling plate 5 are staggered to inject structural adhesive, so that the injection of structural adhesive is more uniform and reasonable, which is conducive to improving the uniformity of structural adhesive.

[0047] Optionally, the depth of the insertion slot 32 is greater than the height of the elastic baffle 4; such as Figure 10As shown, the depth direction of the insertion slot 32 is the same as the height direction of the elastic baffle 4. The height of the elastic baffle 4 is its height from bottom to top. Therefore, the elastic baffle 4 does not need to completely fill the insertion slot 32. Only the elastic baffle 4, the end plate 31, and the side cooling plate 5 need to cooperate with the mounting slot 21 on the sealing beam. In this way, the part of the insertion slot 32 that is not filled with the elastic baffle 4 can accommodate structural adhesive, improving the adhesive stability. For further explanation of the height direction of the elastic baffle 4, please refer to [link to relevant documentation]. Figure 5 or Figure 6 ,exist Figure 5 or Figure 6 In the diagram, the vertical direction represents the height of the elastic baffle 4. Simultaneously, the bottom of the elastic baffle 4 is below the bottom of the mounting groove 21, ensuring effective shielding of the mounting groove 21.

[0048] The bottom of the elastic baffle 4 has an insertion guide portion 4002. The further the insertion guide portion 4002 is from the sealing insertion groove 401, the smaller its width. The insertion guide portion 4002 makes it easier for the elastic baffle 4 to be inserted into the insertion groove 32.

[0049] Optionally, such as Figure 9 As shown, the insertion groove 32 is a stepped groove, which includes a first groove segment 3201 and a second groove segment 3202 arranged along the thickness direction of the end plate 31. The outer edge of the sealing foam layer 42 extends beyond the outer edge of the elastic plate layer 41, and the sealing foam layer 42 elastically presses against the groove wall of the first groove segment 3201, while the elastic plate layer 41 adheres to the groove wall of the second groove segment 3202. The stepped groove design of the insertion groove 32, combined with the elastic pressing of the sealing foam layer 42 against the groove wall of the first groove segment 3201 and its adherence to the insulating layer 311 under the pressure of the structural adhesive, further enhances the sealing effect. In the width direction of the elastic baffle 4, both sides of the sealing foam layer 42 extend beyond the outer side of the elastic plate layer 41 to fit the first groove section 3201 and the second groove section 3202 of the end plate 31. Utilizing the elastic deformation characteristics of the sealing foam layer 42, it tightly squeezes the groove wall of the first groove section 3201, while the elastic plate layer 41 fits against the groove wall of the second groove section 3202, providing rigid support. This eliminates the gaps between the sections of the stepped groove, forming a double seal that prevents structural adhesive leakage and isolates external moisture and impurities from entering the cell area. At the same time, it ensures an interference fit between the sealing foam layer 42 and the groove wall of the insertion slot, preventing the elastic baffle 4 from loosening or shifting under vibration and impact conditions, thus ensuring the installation stability and heat exchange effect of the side cooling plate 5.

[0050] Optionally, such as Figure 11As shown, the end plate 31 includes an insulating layer 311 and a heat-insulating buffer layer 312. A first groove 3201 is formed on the heat-insulating buffer layer 312, and a second groove 3202 is formed on the insulating layer 311. During actual assembly, the elastic plate layer 41 and the insulating layer 311 are sealed together. The elastic plate layer 41 possesses a certain degree of rigidity and elasticity, while the insulating layer 311 is a rigid insulating component of the end plate. Their sealed connection forms a tight fit of rigidity and semi-rigidity, ensuring precise positioning of the insertion point and filling small gaps through slight deformation of the elastic plate layer, blocking the leakage path of structural adhesive along the contact surface. The insulating layer 311 provides insulation, and the sealed connection between it and the elastic plate layer 41 further enhances the insulation performance of this area, preventing short circuits between the battery cell and metal components such as the end plate and crossbeams, ensuring battery safety. The sealing foam layer 42 and the heat-insulating buffer layer 312 are also sealed together. The sealing foam layer 42 has high elasticity and is easily deformable. The heat-insulating buffer layer 312... As a flexible thermal insulation component, the two sealed plug-in joints utilize the elastic compression of the foam to fill the space of the first slot section, forming an elastic sealing barrier. This not only enhances the sealing effect but also buffers the stress caused by battery vibration and impact, preventing the slot wall from cracking. The thermal insulation buffer layer 312 provides thermal insulation and buffering effects, and the sealing foam layer 42 is sealed and plugged into it, forming a double thermal insulation buffer structure. On the one hand, it can prevent the heat generated by the cell during operation from being transferred to other components of the end plate, preventing the structural adhesive from softening and failing due to high temperature; on the other hand, it can absorb the volume shrinkage stress during the curing of the structural adhesive, preventing the end plate from deforming due to stress concentration and maintaining the integrity of the sealing structure. The layered plug-in design of two different materials avoids the problem of uneven stress caused by contact of a single material, and also avoids problems such as local wear caused by large differences in material hardness when rigid and flexible components are in contact. This application ensures precise positioning by matching rigid to rigid and flexible to flexible, while allowing stress to be evenly distributed on the contact surface, extending the service life of the components and reducing the risk of sealing failure.

[0051] Example 2 This embodiment discloses an electrical device, including a battery as described in any one of Embodiment 1.

[0052] Batteries are used to power electrical devices, which can be cars, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, medical devices, and power tools, among others.

[0053] Among them, automobiles can be fuel-powered automobiles, natural gas-powered automobiles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0054] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A battery, characterized in that, Includes a housing (1), and a crossbeam (2), a battery cell assembly (3), an elastic baffle plate (4), and a side cooling plate (5) all installed in the housing (1); The battery cell assembly (3) includes an end plate (31), which has an insertion slot (32) that matches the elastic baffle plate (4) or an insertion slot (32) is formed between two adjacent end plates (31). The elastic baffle plate (4) has a sealing insertion groove (401), the side cold plate (5) is sealed and inserted into the sealing insertion groove (401), and the elastic baffle plate (4) is inserted into the insertion groove (32), the elastic baffle plate (4) seals the gap between the side wall of the insertion groove (32) and the side cold plate (5). The two opposing surfaces of the elastic baffle (4) are respectively sealed and attached to the side of the crossbeam (2) and the battery cells in the battery cell assembly (3).

2. The battery according to claim 1, characterized in that, The elastic baffle (4) includes an elastic plate layer (41) and a sealing foam layer (42). The sealing insertion groove (401) includes a first groove section (4011) located on the elastic plate layer (41) and a second groove section (4021) located on the sealing foam layer (42). The sealing foam layer (42) protrudes from the groove wall of the first groove section (4011) to seal against the side cold plate (5).

3. The battery according to claim 2, characterized in that, The elastic baffle (4) includes two sealing arms (4001) spaced apart. In its natural state, the elastic baffle (4) is V-shaped or Y-shaped under the elastic force of the elastic plate layer (41), and the two sealing arms (4001) are inverted V-shape. When the side cold plate (5) is sealed and plugged into the sealing insertion groove (401) and the elastic baffle plate (4) is inserted into the insertion groove (32), the two sealing arms (4001) located on opposite sides of the elastic baffle plate (4) are parallel to each other.

4. The battery according to claim 2, characterized in that, The second groove section (4021) has fastening protrusions (421) on both sides of the groove opening; When the side cold plate (5) is inserted into the sealing insertion groove (401) and the elastic baffle plate (4) is inserted into the insertion groove (32), the fastening protrusion (421) fastens to the top of the side cold plate (5) to form an anti-detachment structure.

5. The battery according to claim 1, characterized in that, The crossbeam (2) is provided with an installation groove (21), and a collector (6) is installed in the installation groove (21). The collector (6) is connected to the side cold plate (5), and the collector (6) is fixedly connected to the crossbeam (2). The elastic baffle (4) and the end plate (31) together cover the mounting groove (21).

6. The battery according to claim 1, characterized in that, It also includes a top rubber strip (7); The battery cell assembly (3) includes at least two rows of battery cells, with the top baffle strip (7) installed between adjacent rows of battery cells, and the end of the top baffle strip (7) abutting against the elastic baffle plate (4). The width of the top baffle strip (7) is equal to the width between two adjacent rows of cells, and the bottom surface of the top baffle strip (7) is attached to the top surface of the side cold plate (5).

7. The battery according to claim 1, characterized in that, A silicone spiral frame (8) is installed between the large surfaces of two adjacent battery cells, and the bottom of the silicone spiral frame (8) forms a glue-containing space with the bottom plate of the housing (1). At least part of the bottom of the silicone spiral frame (8) forms a protrusion (81), and the bottom surface of the protrusion (81) is flush with the bottom surface of the battery cell and adheres to the bottom plate of the housing (1) to seal the glue-containing space. A glue injection hole (810) is formed between the silicone ring frame (8) and the side cold plate (5). Structural glue is injected into the glue injection holes (810) on opposite sides of the side cold plate (5) in an alternating manner along the length direction of the side cold plate (5).

8. The battery according to claim 1, characterized in that, The depth of the insertion slot (32) is greater than the height of the elastic baffle (4); The bottom of the elastic baffle (4) forms an insertion guide (4002), and the wider the insertion guide (4002) is, the further away it is from the sealing insertion groove (401).

9. The battery according to claim 2, characterized in that, The insertion slot (32) is a stepped slot, which includes a first slot section (3201) and a second slot section (3202) arranged along the thickness direction of the end plate (31). The outer edge of the sealing foam layer (42) extends beyond the outer edge of the elastic plate layer (41), and the sealing foam layer (42) elastically presses the groove wall of the first groove segment (3201), while the elastic plate layer (41) adheres to the groove wall of the second groove segment (3202).

10. The battery according to claim 9, characterized in that, The end plate (31) includes an insulating layer (311) and a heat insulation buffer layer (312), the first groove (3201) is formed on the heat insulation buffer layer (312), and the second groove (3202) is formed on the insulating layer (311).

11. An electrical appliance, characterized in that, It includes the battery as described in any one of claims 1 to 10.

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