Box entering auxiliary system of battery module and battery pack

Abstract

The utility model provides a boxing auxiliary system of a battery module and a battery pack. The boxing auxiliary system comprises a clamping structure and a first cushion block. A plurality of structural beams arranged in the first direction are arranged in the box body, and an installation space exists between every two adjacent structural beams. The clamping structure is provided with one or more clamping jaws in the second direction. The clamping jaws are used for clamping the end plates arranged at the two ends of the battery module, so that the battery module obtains clamping force in the first direction, and the situation that battery cells in the battery module are scattered and staggered is avoided. The multiple first cushion blocks are arranged on the structural beam in the second direction, so that a first interval exists between the structural beam and the end plate in the first direction. A second interval exists between every two adjacent first cushion blocks in the second direction. The first interval and the second interval form the accommodating space, and the accommodating space is used for avoiding the clamping jaw, so that the battery module is always in a clamped state, the assembly difficulty of the battery module is reduced, the assembly time is shortened, and the production cost of the battery pack is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery module loading assistance system and a battery pack. Background Art

[0002] A battery pack may include one or more battery modules, forming a complete energy storage and supply unit. Each battery module is composed of multiple cells connected in series, parallel, or both. The cells that make up the battery module are pre-grouped prior to assembly, allowing the battery module to be boxed as the minimum assembly unit of the battery pack. Boxing refers to the process of placing the battery module into the battery pack box and completing its installation.

[0003] In the prior art, since there are multiple battery cells in the battery module, the battery module is prone to deformation or battery cells are scattered and misplaced during the boxing process, which increases the difficulty of assembly and prolongs the assembly time, thereby increasing the production cost of the battery pack. Utility Model Content

[0004] The present application provides a battery module box-entry assistance system, which reduces the difficulty of assembling the battery module, shortens the assembly time, and thus reduces the production cost of the battery pack.

[0005] In a first aspect, the present application provides a battery module loading assistance system that cooperates with a battery pack casing to facilitate loading. The loading assistance system comprises a clamping structure and a first spacer. The casing includes multiple structural beams arranged along a first direction, with a mounting space between two adjacent structural beams. The first direction is the length of the battery pack. The clamping structure is provided with one or more clamping claws along a second direction. The second direction is the width of the battery pack and is perpendicular to the first direction. The clamping claws are used to clamp the end plates at both ends of the battery module and place the battery module within the mounting space. The direction of the line connecting the end plates at both ends of the battery module is the first direction. Multiple first spacers are arranged on the structural beams along the second direction. The first spacer includes a first surface and a second surface arranged opposite each other along the first direction. The first surface abuts the structural beam, and the second surface abuts the end plate, creating a first gap between the structural beam and the end plate in the first direction. A second gap is provided between two adjacent first spacers in the second direction. The first and second gaps form a storage space that is designed to avoid the clamping claws.

[0006] According to the first aspect, the embodiment of the present application provides a box loading assistance system comprising a clamping structure and a first spacer. The clamping claws provided on the clamping structure are used to clamp the end plates provided at both ends of the battery module, so that the battery module obtains a clamping force in a first direction, thereby preventing the battery cells in the battery module from being scattered or misplaced. Multiple first spacers are arranged on the structural beam along the second direction, with the first surface of the first spacer abutting the structural beam and the second surface opposite the first surface abutting the end plate. The second surface of the first spacer replaces the structural beam in abutting the end plate, thereby creating a first gap between the structural beam and the end plate in the first direction. Furthermore, multiple first spacers are arranged along the second direction, with a second gap in the second direction between adjacent first spacers. The first gap and the second gap form a storage space, which can be used to accommodate the clamping claws that are loaded into the box along with the battery module. This allows the battery module to remain clamped until it is fully loaded, preventing deformation of the battery module or the cells from being scattered or misplaced during the loading process. This reduces the difficulty and time of assembling the battery module, thereby reducing the production cost of the battery pack.

[0007] In one possible design, the distance of the first interval is less than or equal to 15 mm, and the distance of the first interval is greater than or equal to 5 mm, and the width of the clamping jaw in the first direction is less than the distance of the first interval.

[0008] Based on the description of the above embodiment, the most suitable range of the first interval is 5mm-15mm, which can be applied to most sizes of clamps on the market. The width of the clamp in the first direction is smaller than the first interval, so that the clamp can smoothly enter the accommodation space.

[0009] In a possible design, the distance of the second interval is less than or equal to 18 mm. The length of the clamping jaw in the second direction is less than the distance of the second interval.

[0010] Based on the description of the above embodiment, the maximum distance of the second interval can be 18 mm, which is applicable to most sizes of clamps on the market. The length of the clamp in the second direction is smaller than the distance of the second interval, so that the clamp can smoothly enter the accommodation space.

[0011] In a possible design, the first spacer and the structural beam may be connected by riveting.

[0012] Based on the description of the above embodiment, the first pad is riveted to the structural beam, which can ensure the connection strength between the first pad and the structural beam, so that the position of the battery module in the box will not change easily, thereby further reducing the difficulty of assembling the battery module and further reducing the production cost of the battery pack.

[0013] In a possible design, the first spacer and the end plate may be connected by a snap-fit ​​connection.

[0014] Based on the description of the above embodiment, the end plate is clamped on the first pad, so that the battery module is easy to install and disassemble while ensuring the stability of the connection with the end plate, thereby ensuring the stability of the battery module installed in the installation space.

[0015] In a possible design, the clamping structure may further include a positioning surface. The positioning surface is provided with a positioning structure for determining the installation position of the battery module in the installation space.

[0016] Based on the description of the above embodiments, the installation position of the battery module in the installation space is determined by the positioning structure provided on the clamping structure, so that the battery module can be quickly put into the box, which reduces the assembly difficulty and shortens the assembly time, thereby further reducing the production cost of the battery pack.

[0017] In a possible design, the positioning structure may include a plurality of positioning pins arranged on the positioning surface.

[0018] Based on the description of the above embodiments, providing the positioning pins on the clamping structure can avoid affecting the assembly of other components in the battery pack, reduce the difficulty of assembling the battery pack, and thus reduce the production cost of the battery pack.

[0019] In a possible design, the positioning structure may include two positioning pins, one of which is arranged at one end of the diagonal line of the positioning surface, and the other is arranged at the other end of the diagonal line of the positioning surface.

[0020] Based on the description of the above embodiment, the positioning structure includes two positioning pins respectively arranged at both ends of the diagonal of the positioning surface, so that the relative position of the clamping structure and the box body is fully defined, thereby ensuring that the battery module can accurately enter the installation position.

[0021] In a possible design, a buffer structure is provided on the first surface and / or the second surface. Alternatively, the buffer structure is nested in the first cushion block.

[0022] Based on the description of the above embodiments, the buffer structure can buffer and offset the expansion force of part of the battery module, reduce the damage to the battery caused by the expansion force, thereby extending the life of the battery pack and reducing maintenance costs.

[0023] In the second aspect, the present application provides a battery pack, which realizes the entry of the battery module into the box through the entry assistance system described in any one of the above embodiments. The battery pack includes: a battery module and a box body. The entry assistance system is provided with a plurality of positioning pins. The box body has a structural beam, and a plurality of positioning grooves corresponding to the positioning pins are provided on the structural beam. One of the positioning pins is clamped in one of the positioning grooves. The battery module has an end plate, and a plurality of process holes are provided on the end plate. The battery module is entered into the box through the entry assistance system, so that the battery module is placed in the installation space formed by the structural beam.

[0024] The beneficial effects of the battery pack provided by the second aspect can be referred to the beneficial effects brought about by the first aspect and the various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic diagram of the assembly of a box and a battery module in an embodiment of the present application.

[0027] Figure 2 This is a structural diagram of a box in an embodiment of the present application.

[0028] Figure 3 for Figure 1 A magnified partial view of part A.

[0029] Figure 4 for Figure 2 Cross-sectional view in direction B.

[0030] Figure 5 for Figure 1 A partial enlarged view of section C.

[0031] Figure 6 This is a schematic structural diagram of an end plate in an embodiment of the present application.

[0032] Figure 7 for Figure 1 Cross-sectional view in the D direction.

[0033] Figure 8 for Figure 7 A partial enlarged view of part E in the middle.

[0034] Description of reference numerals:

[0035] 1- box; 11- structural beam; 111- positioning groove; 12- installation space;

[0036] 2-battery module; 21-end plate; 211-clip plate; 212-process hole;

[0037] 3-first pad; 31-accommodation space; 32-riveting hole;

[0038] X-first direction; Y-second direction. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0042] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0044] The directional words appearing in the following description are all directions shown in the drawings and do not limit the specific structure of this application. For example, in the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting this application.

[0045] In addition, the expressions indicating directions such as the X direction, Y direction, and Z direction used to illustrate the operation and construction of the various components of this embodiment are not absolute but relative, and although these indications are appropriate when the various components are in the positions shown in the figures, when these positions are changed, these directions should be interpreted differently to correspond to the changes.

[0046] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0047] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. "Connected" or "connected" in a circuit structure can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0049] A battery pack may include one or more battery modules, forming a complete energy storage and supply unit. Each battery module is composed of multiple cells connected in series, parallel, or both. The cells that make up the battery module are pre-grouped prior to assembly, allowing the battery module to be boxed as the minimum assembly unit of the battery pack. Boxing refers to the process of placing the battery module into the battery pack box and completing its installation.

[0050] In the prior art, since there are multiple battery cells in the battery module, the battery module is prone to deformation or battery cells are scattered and misplaced during the boxing process, which increases the difficulty of assembly and prolongs the assembly time, thereby increasing the production cost of the battery pack.

[0051] Based on this, the present application proposes a battery module boxing auxiliary system, which keeps the battery module in a clamped state before it is completely boxed, avoiding deformation of the battery module or dislocation of the battery cells during the boxing process, reducing the assembly difficulty of the battery module, shortening the assembly time, and thus reducing the production cost of the battery pack. Figure 1-8 Provide a detailed description.

[0052] First, as Figure 1-Figure 3 As shown, the present application provides a battery module 2 entry assistance system, which needs to cooperate with the battery pack box 1 to realize the entry of the battery module 2. The entry assistance system includes: a clamping structure (not shown in the figure) and a first pad 3. The box 1 includes a plurality of structural beams 11 arranged along the first direction X, and there is an installation space 12 between two adjacent structural beams 11. The first direction X is the length direction of the battery pack. One or more clamps are provided on the clamping structure along the second direction Y. The second direction Y is the width direction of the battery pack, and the second direction Y is perpendicular to the first direction X. The clamp is used to clamp the end plates 21 arranged at both ends of the battery module 2 and place the battery module 2 in the above-mentioned installation space 12. The direction of the line connecting the end plates 21 at both ends of the battery module 2 is the first direction X. Multiple first pads 3 are arranged on the structural beam 11 along the second direction Y. The first pad 3 includes a first surface and a second surface arranged opposite to each other along the first direction X. The first surface abuts the structural beam 11, and the second surface abuts the end plate 21, creating a first gap between the structural beam 11 and the end plate 21 in the first direction X. A second gap exists between two adjacent first spacers 3 in the second direction Y. The first and second gaps form an accommodation space 31, which is used to avoid the clamping claws.

[0053] Structural beams 11 are provided within the housing 1 and are used to mount and secure the battery modules 2. Structural beams 11 must provide sufficient structural strength to support the weight of the battery modules 2 and must also absorb and disperse external impact forces to ensure the safety of the battery pack. Structural beams 11 are typically made of high-strength steel, aluminum alloy, or composite materials. Furthermore, the design of structural beams 11 can include solid beams, hollow beams, or other optimized cross-sectional shapes to provide optimal mechanical properties.

[0054] Specifically, if Figure 2 As shown, there is an installation space 12 between two adjacent structural beams 11, and the installation space 12 is used to install a battery module 2. The inner wall of each installation space 12 is the side wall of the structural beam 11, which is used to abut against the side wall of the battery module 2, so that the battery module 2 is fixedly installed in the above installation space 12.

[0055] The battery pack may include one or more battery modules 2 to form a complete energy storage and supply unit. Figure 1 and Figure 2 As shown, the housing 1 may include multiple structural beams 11 arranged along a first direction X, thereby forming multiple installation spaces 12 for mounting multiple battery modules 2 in the battery pack. The first direction X is the length of the battery pack. That is, multiple battery modules 2 can be arranged and mounted in the multiple installation spaces 12 along the length of the battery pack.

[0056] The battery module 2 is composed of multiple cells connected in series, in parallel or in series-parallel to form an integral unit with a certain voltage and capacity. Figure 1 As shown, the battery module 2 may include multiple battery cells stacked along a first direction X. When the battery module 2 is placed in a box as a minimum assembly unit, applying a clamping force to the battery module 2 along the first direction X can clamp all battery cells stacked along the first direction X in the battery module 2, thereby preventing the battery cells from being scattered or misplaced. The direction of the line connecting the end plates 21 at both ends of the battery module 2 is the first direction X. That is, the battery cells are stacked between the two end plates 21.

[0057] Based on this, the clamping claws of the clamping structure clamp the end plates 21 provided at both ends of the battery module 2 so that the battery module 2 obtains a clamping force in the first direction X, thereby preventing the battery cells in the battery module 2 from being scattered and misplaced.

[0058] Specifically, the jaw is the portion of the clamping structure that directly contacts and secures the battery module 2. A single jaw typically consists of two or more movable arms. The jaw is driven mechanically, pneumatically, electrically, or hydraulically, causing the movable arms to open and close along a first direction X to clamp or release the battery module 2. Key design considerations for the jaw include ensuring sufficient clamping force and stability while maintaining appropriate flexibility to accommodate battery modules 2 of varying sizes and shapes. The jaw is typically constructed of high-strength, wear-resistant, high-temperature-resistant, and corrosion-resistant materials to ensure long-term durability and reliability.

[0059] Furthermore, the clamping structure is provided with one or more clamping claws along the second direction Y, so that a battery module 2 can be clamped by multiple clamping claws, thereby increasing the clamping force and reducing the possibility of the battery cells being scattered and misplaced. Figure 2 and Figure 4 As shown, the second direction Y may be the width direction of the battery pack, and the second direction Y is perpendicular to the first direction X.

[0060] Furthermore, in the related art, after the battery module 2 is placed in the box, the end plate 21 abuts against the side wall of the structural beam 11, and the clamping claws on the end plate 21 cannot be placed in the box together with the battery module 2 until the battery module 2 is completely installed, causing the battery module 2 to lose the above-mentioned clamping force before it is completely placed in the box, thereby causing the battery module 2 to be deformed or the battery cells to be scattered and misplaced during the placement process.

[0061] Based on this, Figure 3 As shown, a first spacer 3 is provided on the structural beam 11, and a first surface of the first spacer 3 is brought into contact with the structural beam 11, while a second surface opposite to the first surface is brought into contact with the end plate 21. This allows the second surface of the first spacer 3 to replace the structural beam 11 and contact the end plate 21, thereby creating a first gap between the structural beam 11 and the end plate 21 in the first direction X. Specifically, the first gap is the thickness of the end plate 21 in the first direction X.

[0062] Furthermore, multiple first spacers 3 are arranged along the second direction Y, with a second gap between two adjacent first spacers 3 in the second direction Y. The first gap in the first direction X and the second gap in the second direction Y can form a receiving space 31. The receiving space 31 can be used to accommodate the clamping claws that are placed into the box along with the battery module 2, so that the battery module 2 remains in a clamped state until it is completely placed into the box. This prevents deformation of the battery module 2 or dislocation of the battery cells during the placement process, reduces the difficulty of assembling the battery module 2, shortens the assembly time, and thus reduces the production cost of the battery pack.

[0063] In summary, the box entry assistance system provided in the embodiment of the present application includes a clamping structure and a first pad 3. The clamping claws provided on the clamping structure are used to clamp the end plates 21 provided at both ends of the battery module 2, so that the battery module 2 obtains a clamping force in the first direction X, thereby preventing the battery cells in the battery module 2 from being scattered and misplaced. A plurality of first pads 3 are provided on the structural beam 11 along the second direction Y, and the first surface of the first pad 3 abuts against the structural beam 11, and the second surface opposite to the first surface abuts against the end plate 21, so that the second surface of the first pad 3 replaces the structural beam 11 in abutment with the end plate 21, so that there is a first gap between the structural beam 11 and the end plate 21 in the first direction X. Furthermore, multiple first pads 3 are arranged along the second direction Y, and a second interval is provided between two adjacent first pads 3 in the second direction Y, so that the first interval and the second interval can form a accommodating space 31. The accommodating space 31 can be used to accommodate the clamping claws that are put into the box together with the battery module 2, so that the battery module 2 is always in a clamped state before the battery module 2 is completed into the box, thereby avoiding deformation of the battery module 2 or scattering and misplacement of the battery cells during the boxing process, reducing the difficulty of assembling the battery module 2, shortening the assembly time, and thus reducing the production cost of the battery pack.

[0064] Furthermore, in some embodiments, the distance of the first interval is less than or equal to 15 mm, and the distance of the first interval is greater than or equal to 5 mm, and the width of the clamping jaw in the first direction X is less than the distance of the first interval.

[0065] It can be known from the above content that the first interval and the second interval can form an accommodating space 31, and the accommodating space 31 is used to accommodate the clamping claws of the clamping structure.

[0066] Taking into account factors such as the size of the gripper, the size of the battery pack, and the influence of the limit of the gripper size on the clamping strength, and combining multiple experimental data, it can be concluded that the most suitable range of the first interval distance is 5mm-15mm, which can be applied to most sizes of grippers on the market.

[0067] Furthermore, the width of the accommodating space 31 can be the distance of the first interval, and the accommodating space 31 composed of the first interval and the second interval is used to accommodate the clamping claw. Therefore, it can be seen that the width of the clamping claw must be smaller than the distance of the first interval.

[0068] In summary, the most suitable range of the first interval is 5mm-15mm, which is applicable to most sizes of clamps on the market. The width of the clamp in the first direction X is smaller than the first interval, so that the clamp can smoothly enter the accommodating space 31.

[0069] Furthermore, in some embodiments, the distance of the second interval is less than or equal to 18 mm, and the length of the clamping jaw in the second direction Y is less than the distance of the second interval.

[0070] Taking into account factors such as the gripper size, battery pack size, and the impact of the gripper size limit on the clamping strength, and combining multiple experimental data, it can be concluded that the maximum distance of the second interval can be 18mm, which can be applied to most sizes of grippers on the market.

[0071] Furthermore, the length of the accommodation space 31 can be the distance of the second interval, and the accommodation space 31 composed of the first interval and the second interval is used to accommodate the clamping claw. Therefore, it can be seen that the length of the clamping claw must be smaller than the distance of the second interval.

[0072] In summary, the maximum distance of the second interval can be 18 mm, which is suitable for most sizes of clamps on the market. The length of the clamp in the second direction Y is less than the distance of the second interval, so that the clamp can smoothly enter the accommodating space 31.

[0073] Furthermore, in order to make the scheme clearer and more complete, the following Figure 1-Figure 3 The connection relationship between the first cushion block 3 and the structural beam 11 , and the connection relationship between the first cushion block 3 and the end plate 21 are described in detail.

[0074] In some embodiments, the first pad 3 and the structural beam 11 may be riveted.

[0075] Specifically, if Figure 4 As shown, both the first cushion block 3 and the structural beam 11 are provided with rivet holes 32 .

[0076] Riveting, as a fixed connection method, has the advantages of high connection strength, no thermal stress, and reduced vibration transmission. Riveting can form a very strong connection point, thereby ensuring the connection strength between the first pad 3 and the structural beam 11.

[0077] According to the description of the above embodiment, the first pad 3 is riveted to the structural beam 11, which can ensure the connection strength between the first pad 3 and the structural beam 11, so that the position of the battery module 2 in the box will not change easily, thereby further reducing the assembly difficulty of the battery module 2 and further reducing the production cost of the battery pack.

[0078] In some embodiments, the first cushion block 3 and the end plate 21 may be connected by a snap connection.

[0079] As a detachable connection method, the snap connection has high structural strength, which makes it easy to install and remove the battery module 2 while ensuring the stability of the connection with the end plate 21, thereby ensuring the stability of the battery module 2 installed in the installation space 12.

[0080] Specifically, if Figure 6 As shown, a snap-on piece 211 is provided on the end plate 21. Figure 7It can be seen that after the battery module 2 is placed in the box, the clamping piece 211 can be clamped on the first cushion block 3 .

[0081] According to the description of the above embodiment, the end plate 21 is clamped on the first pad 3, so that the battery module 2 can be easily installed and disassembled while ensuring the stability of the connection with the end plate 21, thereby ensuring the stability of the battery module 2 installed in the installation space 12.

[0082] On the other hand, there may be inaccurate positioning problems during the process of placing the battery module 2 into the box, which may result in the battery module 2 not being able to be quickly placed into the box, increasing the difficulty of assembly and increasing the assembly time. In order to solve the above problems, this solution also makes the following improvements:

[0083] In some embodiments, the clamping structure may further include a positioning surface on which a positioning structure is provided for determining the installation position of the battery module 2 in the installation space 12 .

[0084] The positioning surface is the surface of the clamping structure facing the structural beam 11 when the clamping structure clamps the battery module 2 into the box.

[0085] According to the description of the above embodiments, the installation position of the battery module 2 in the installation space 12 is determined by the positioning structure provided on the clamping structure, so that the battery module 2 can be quickly put into the box, which reduces the assembly difficulty and shortens the assembly time, thereby further reducing the production cost of the battery pack.

[0086] In some embodiments, the positioning structure may include a plurality of positioning pins (not shown) disposed on the positioning surface.

[0087] The locating pins work together with the holes to limit the linear movement and rotation of the parts. The locating pins can provide precise position control and ensure the accuracy of positioning.

[0088] In related art, positioning pins on the structural beam 11 can affect the assembly of other components in the battery pack. For example, the cell connection system (CCS) is positioned above the battery module 2 along the first direction X during assembly. Positioning pins on the structural beam 11 can affect assembly of the CCS and even damage it.

[0089] Based on this, setting the positioning pin on the clamping structure can avoid affecting the assembly of other components in the battery pack, reduce the difficulty of assembling the battery pack, and thus reduce the production cost of the battery pack.

[0090] Specifically, in some embodiments, the positioning structure may include two positioning pins, one of which is disposed at one end of a diagonal line of the positioning surface, and the other of which is disposed at the other end of the diagonal line of the positioning surface.

[0091] By using two points on the diagonal line as positioning points, the relative position of the clamping structure and the box body 1 is completely defined, thereby ensuring that the battery module 2 can be accurately installed.

[0092] According to the description of the above embodiment, the positioning structure includes two positioning pins respectively arranged at both ends of the diagonal of the positioning surface, so that the relative position of the clamping structure and the box body 1 is completely defined, thereby ensuring that the battery module 2 can accurately enter the installation position.

[0093] In order to realize the positioning function of the positioning pin, the present application has made corresponding improvements on the structural beam 11 of the battery pack:

[0094] In some embodiments, as Figure 8 As shown, a plurality of positioning grooves 111 corresponding to the positioning pins are provided on the structural beam 11. One positioning pin is clamped in one positioning groove 111.

[0095] The positioning groove 111 is a recessed portion for receiving a positioning pin. The positioning pin is engaged in the positioning groove 111 to limit the movement of the battery module 2.

[0096] According to the description of the above embodiment, a positioning groove 111 corresponding to the positioning pin is provided on the structural beam 11 so that the positioning pin can realize the function of positioning the battery module 2 .

[0097] On the other hand, the battery modules 2 in the battery pack will generate expansion force during the charging and discharging process. The expansion force can cause battery damage, performance degradation, and even safety risks. To solve the above problems, this solution also makes the following improvements:

[0098] In some embodiments, a buffer structure (not shown in the figure) may be provided on the first cushion block 3. The connection method between the first cushion block 3 and the buffer structure may include but is not limited to the following two methods:

[0099] Connection method 1: A buffer structure is provided on the first surface and / or the second surface.

[0100] Connection method two: the buffer structure is nested in the first cushion block 3 .

[0101] Specifically, the buffer structure may use elastic materials, special chemical mixtures, or physical partitions to absorb or disperse the force generated when the battery cell expands, thereby protecting the integrity and safety of the battery unit and the entire battery module 2.

[0102] According to the description of the above embodiment, the buffer structure can buffer and offset part of the expansion force of the battery module 2, reducing the damage to the battery caused by the expansion force, thereby extending the life of the battery pack and reducing maintenance costs.

[0103] Furthermore, in order to address the safety risks caused by the expansion force, the present application may also make the following improvements on the end plate 21 of the battery module 2:

[0104] In some embodiments, as Figure 6 As shown, a plurality of process holes 212 are provided on the end plate 21 .

[0105] Specifically, the multiple process holes 212 provided on the end plate 21 can have the following two effects:

[0106] Effect 1: Reduce the weight of the end plate 21 and reduce production costs.

[0107] Effect 2: The multiple process holes 212 provide the end plate 21 with a cavity that can absorb expansion force, thereby further reducing battery damage caused by the expansion force.

[0108] In a second aspect, embodiments of the present application provide a battery pack, which may include a battery module and a structural beam. The battery module is loaded into a box using the loading assistance system described in any of the above embodiments, so that the battery module is placed in the installation space formed by the structural beam.

[0109] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0110] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery module loading assistance system, characterized in that: The battery module needs to be placed in the box in cooperation with the box of the battery pack. The placing-in-box auxiliary system includes: a clamping structure and a first cushion block; The box body includes a plurality of structural beams arranged along a first direction, and there is an installation space between two adjacent structural beams; Wherein, the first direction is the length direction of the battery pack; The clamping structure is provided with one or more clamping claws along the second direction; Wherein, the second direction is the width direction of the battery pack, and the second direction is perpendicular to the first direction; The clamping claws are used to clamp the end plates provided at both ends of the battery module and place the battery module in the installation space; The direction of the line connecting the end plates at both ends of the battery module is the first direction, and the length direction of the end plates is the second direction; A plurality of the first pads are arranged on the structural beam along the second direction; The first spacer includes a first surface and a second surface arranged opposite to each other along the first direction; The first surface abuts against the structural beam, and the second surface abuts against the end plate, so that a first gap exists between the structural beam and the end plate in the first direction; There is a second interval between two adjacent first pads in the second direction; The first interval and the second interval form an accommodating space, and the accommodating space is used to avoid the clamping claw.

2. The box loading assistance system according to claim 1, characterized in that: The distance of the first interval is less than or equal to 15 mm; Furthermore, the distance of the first interval is greater than or equal to 5 mm; The width of the clamping jaw in the first direction is smaller than the distance of the first interval.

3. The box loading assistance system according to claim 1, characterized in that: The distance of the second interval is less than or equal to 18 mm; The length of the clamping jaws in the second direction is smaller than the distance of the second interval.

4. The box loading assistance system according to claim 1, characterized in that: The first pad and the structural beam are connected by riveting.

5. The box loading assistance system according to claim 1, characterized in that: The first cushion block and the end plate are connected by a snap connection.

6. The box loading assistance system according to any one of claims 1 to 5, characterized in that: The clamping structure may further include a positioning surface; A positioning structure is provided on the positioning surface for determining the installation position of the battery module in the installation space.

7. The box loading assistance system according to claim 6, characterized in that: The positioning structure may include a plurality of positioning pins arranged on the positioning surface.

8. The box loading assistance system according to claim 7, characterized in that: The positioning structure may include two positioning pins; One of the positioning pins is arranged at one end of the diagonal line of the positioning surface; Another positioning pin is arranged at the other end of the diagonal line of the positioning surface.

9. The box loading assistance system according to claim 1, characterized in that: A buffer structure is provided on the first surface and / or the second surface; or, The buffer structure is nested in the first cushion block.

10. A battery pack, characterized in that: The battery module is put into a box by the box-entry assistance system according to any one of claims 1 to 9, wherein the battery pack comprises: the battery module and the box body; The box entry assist system is provided with a plurality of positioning pins; The box body has a structural beam, and the structural beam is provided with a plurality of positioning grooves corresponding to the positioning pins; One of the positioning pins is clamped in one of the positioning slots; The battery module has an end plate, and a plurality of process holes are provided on the end plate; The battery module is put into the box by the box-entry auxiliary system, so that the battery module is placed in the installation space formed by the structural beams.

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