Soft package battery cell module and battery box

Abstract

The invention discloses a soft package battery cell module and a battery box, and relates to the technical field of soft package battery cells, the soft package battery cell module comprises a plurality of soft package battery cells, and further comprises a mounting plate, a plurality of riveting pieces and a damping device; the soft package battery cell is provided with a connecting part, and a receding groove is formed in the connecting part; a plurality of first mounting holes are formed in the connecting part, and the first mounting holes are communicated with the receding groove; a plurality of second mounting holes are formed in the mounting plate; the riveting piece enables the soft package battery cell to be fixedly connected with the mounting plate; the damping device comprises a plurality of damping assemblies, and each damping assembly comprises an elastic piece and two connecting pieces; the two connecting pieces are arranged on the two adjacent soft package battery cells respectively, and the two ends of the elastic piece are connected with the two connecting pieces respectively; and the elastic piece has elasticity. According to the application, the influence of vibration on normal energy supply of the soft package battery cell module and the battery box can be effectively reduced, so that the safety of driving the electric automobile can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of soft-pack battery cells, and in particular to a soft-pack battery cell module and a battery box. Background Art

[0002] Soft-pack batteries, also known as soft-pack lithium-ion batteries or polymer lithium-ion batteries, are thin lithium-ion batteries that use a soft aluminum-plastic composite packaging shell and lithium-ion electrolytes. Soft-pack batteries play an important role in modern social life and are widely used in portable electronic products, electric vehicles, energy storage systems and other fields.

[0003] Among them, electric vehicles, as an important new energy vehicle, are increasingly recognized by the market. They use soft-pack batteries as power sources and are usually used in the form of battery boxes. The battery box includes a box body and a plurality of soft-pack battery modules arranged inside the box body, and the soft-pack battery module includes a plurality of soft-pack batteries electrically connected to each other, and the discharge of the soft-pack batteries provides energy for the electric vehicle to travel.

[0004] However, since the multiple soft-pack battery cell modules in the box are easily affected by vibration during the driving of the electric vehicle, long-term and severe vibration can easily damage the structure of the soft-pack battery cell module itself, and can also easily cause the connection between the soft-pack battery cell module and the box to loosen, thereby affecting the normal energy supply of the battery box to the electric vehicle and may even cause traffic accidents. Summary of the invention

[0005] The present application provides a soft-pack battery cell module and a battery box, which can effectively reduce the impact of vibration on the normal energy supply of the soft-pack battery cell module and the battery box, thereby effectively improving the safety of driving an electric vehicle.

[0006] On the one hand, the present application provides a soft-pack battery cell module, which adopts the following technical solution: A soft-pack battery cell module, comprising a plurality of soft-pack battery cells, a mounting plate, a plurality of riveted parts and a shock absorbing device; One side of the soft-pack battery cell has a connecting portion, the interior of the connecting portion has a clearance groove for the multiple soft-pack battery cells to form an electrical connection, and the clearance groove runs through both sides of the connecting portion; the connecting portion is provided with a plurality of first mounting holes, and the first mounting holes are communicated with the clearance groove; A plurality of second mounting holes are provided on the mounting plate. After the plurality of soft-packed cells are arranged on one side of the mounting plate, the plurality of second mounting holes correspond to and communicate with the plurality of first mounting holes on the plurality of connecting parts one by one. After the plurality of rivets pass through a plurality of groups of corresponding first mounting holes and second mounting holes at the same time, the plurality of soft-packed cells are fixedly connected to the mounting plate. The shock absorbing device includes a plurality of shock absorbing components, and the shock absorbing components include an elastic member and two connecting members; the two connecting members are respectively arranged on the sides of two adjacent soft-pack battery cells, and the two ends of the elastic member are respectively connected to the two connecting members; the elastic member is elastic and can drive the corresponding two adjacent soft-pack battery cells to maintain a stable relative position.

[0007] By adopting the above technical scheme, the soft-pack battery cell is fixedly connected to the mounting plate by riveting, which can effectively improve the connection strength between the soft-pack battery cell and the mounting plate, thereby improving the structural stability of the soft-pack battery cell module, and further reducing the impact of vibration on the soft-pack battery cell module; at the same time, the shock-absorbing component can effectively improve the relative position stability of adjacent soft-pack battery cells, and disperse the impact of vibration on a single soft-pack battery cell to multiple soft-pack battery cells, which can effectively reduce the probability of damage to the soft-pack battery cell due to vibration, thereby effectively reducing the impact of vibration on the normal energy supply of the soft-pack battery cell module, and further effectively improving the safety of driving electric vehicles.

[0008] Optionally, the shock absorbing device further includes a plurality of elastic partitions, wherein the plurality of partitions are spaced apart on the mounting plate, each adjacent soft-pack battery cells are provided with a partition, and both sides of the partitions are in contact with and abut against the adjacent soft-pack battery cells.

[0009] By adopting the above technical solution, the partition between adjacent soft-pack battery cells can absorb the vibration transmitted to the soft-pack battery cells, reduce the degree to which the soft-pack battery cells are affected by the vibration, and at the same time can reduce the space for vibration of the soft-pack battery cells, effectively suppress the vibration of the soft-pack battery cells, and reduce the probability of damage to the soft-pack battery cells during vibration.

[0010] Optionally, the partition is made of heat-conducting material.

[0011] By adopting the above technical solution, the heat generated during the function of the soft-pack battery cell can be easily dissipated outward, effectively reducing the probability of the soft-pack battery cell being damaged due to excessive heating, and extending the service life of the soft-pack battery cell.

[0012] Optionally, the partition has a heat dissipation channel inside, and the heat dissipation channel has a plurality of openings formed on the peripheral side of the partition to communicate with the outside.

[0013] By adopting the above technical solution, the heat transferred from the soft-pack battery cell to the partition can be dissipated to the outside through the heat dissipation channel, thereby further improving the effect of the partition in helping the soft-pack battery cell to dissipate heat.

[0014] Optionally, when the soft-pack battery cell is affected by vibration and exerts a force on the adjacent partition, the partition is deformed and the shape of the corresponding heat dissipation channel changes.

[0015] By adopting the above technical solution, when the partition absorbs the vibration of the soft-pack battery cell, the shape of the heat dissipation channel changes accordingly, which can promote the flow of gas between the heat dissipation channel and the outside world, thereby further improving the effect of the partition in helping the soft-pack battery cell to dissipate heat.

[0016] Optionally, the elastic member is curved in an arc shape and protrudes toward the direction close to the partition between the corresponding adjacent soft-pack battery cells; when the soft-pack battery cells are not affected by vibration, the protruding portion of the elastic member contacts and abuts against the corresponding partition.

[0017] By adopting the above technical solution, when the soft-pack battery cell is affected by vibration and exerts a force on the adjacent partition, the protruding part of the elastic member will protrude further and exert a force on the partition. The forces exerted by the two on the partition drive the partition to deform in different directions and restrain each other. In this process, the elastic member can not only suppress the vibration of the corresponding soft-pack battery cell, but also further suppress the vibration of the corresponding soft-pack battery cell by suppressing the deformation of the partition caused by the force of the soft-pack battery cell.

[0018] Optionally, the protruding portion of the elastic member is fixedly connected to the corresponding partition.

[0019] By adopting the above technical solution, when the soft-pack battery cell is affected by vibration and exerts a force on the adjacent partition, the protruding portion of another adjacent elastic member will be reduced in degree, thereby further suppressing the vibration of the soft-pack battery cell.

[0020] Optionally, the soft-pack battery cell is fixedly connected to the adjacent partition.

[0021] By adopting the above technical solution, when the soft-pack battery cell is affected by vibration and exerts force on the adjacent partition, another adjacent elastic member can not only further suppress the vibration of the soft-pack battery cell, but also further suppress the vibration of the soft-pack battery cell by driving the corresponding partition to deform.

[0022] Optionally, after the partition and the soft-pack battery cell are connected to the mounting plate, a clearance space is formed between the partition and the mounting plate, and adjacent clearance grooves are connected through the corresponding clearance space.

[0023] By adopting the above technical solution, it is possible to facilitate electrical connection between multiple soft-pack battery cells, and at the same time, a larger heat dissipation space can be formed in areas with dense circuits, thereby further facilitating the heat dissipation of the soft-pack battery cells.

[0024] On the other hand, the present application provides a battery box, which adopts the following technical solution: A battery box, comprising a box body and a plurality of the above-mentioned soft-pack battery cell modules, wherein the box body comprises a container, a cover body and a mounting frame; The container has a cavity inside, the mounting frame is arranged at the bottom of the cavity, and the cover is arranged at the top of the container and is detachably connected to the container; The container and the cover are both provided with a plurality of heat dissipation holes, and when the cover is connected to the container, the heat dissipation holes are in communication with the cavity; The mounting frame includes a support member and a plurality of raised members, the raised members are fixedly connected to the bottom wall of the cavity, the support member is arranged above the plurality of raised members and is fixedly connected to the plurality of raised members at the same time, and the soft-pack battery cell module is arranged above the support member and is fixedly connected to the support member; A plurality of first buffer pads are provided between the support member and the elevated member, a plurality of second buffer pads are provided between the soft-pack battery core module and the support member, and both the first buffer pads and the second buffer pads are elastic.

[0025] By adopting the above technical solution, the vibration transmitted to multiple soft-pack battery modules through the battery box can be effectively reduced, and the heat dissipation of the soft-pack battery modules can be facilitated, thereby further effectively reducing the impact of vibration on the normal energy supply of the soft-pack battery modules and the battery box, and further effectively improving the safety of driving electric vehicles.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. It can effectively reduce the impact of vibration on the normal energy supply of the soft-pack battery module and the battery box, thereby effectively improving the safety of driving electric vehicles; 2. It can effectively improve the structural stability of the soft-pack battery module, thereby effectively reducing the impact of vibration on the soft-pack battery module; 3. It can help the soft-pack battery cell module to dissipate heat, and at the same time can effectively reduce the impact of vibration on the soft-pack battery cell module, thereby effectively extending the service life of the soft-pack battery cell module. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a soft-pack battery cell module according to Example 1; Figure 2 yes Figure 1 The cross-sectional view along the AA line; Figure 3 yes Figure 1 A partial cross-sectional view along line BB; Figure 4 This is a schematic structural diagram of a battery box in Example 2; Figure 5 yes Figure 4 A cross-sectional view along the CC line in the figure (the soft-pack battery cell module is only briefly shown in the figure); Figure 6 yes Figure 5 Enlarged view of point D in the middle (the soft-pack battery cell module is only briefly shown in the figure).

[0028] Explanation of the accompanying drawings: 1. soft-pack battery cell; 11. connecting part; 111. clearance groove; 112. first mounting hole; 2. mounting plate; 21. second mounting hole; 3. rivet; 4. shock absorbing device; 41. shock absorbing assembly; 411. elastic member; 412. connecting member; 42. partition; 421. heat dissipation channel; 5. clearance space; 6. box body; 61. container; 611. cavity; 62. cover body; 63. mounting frame; 631. heightening member; 632. supporting member; 64. heat dissipation hole; 7. soft-pack battery cell module; 8. first buffer pad; 9. second buffer pad. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] Embodiment 1: The embodiment of the present application discloses a soft-pack battery cell module as a power supply unit of an electric vehicle, and multiple soft-pack battery cell modules need to be simultaneously powered during driving of the electric vehicle.

[0031] Reference Figure 1 and Figure 2 The soft-pack battery module includes a plurality of soft-pack battery cells 1, a mounting plate 2, a plurality of rivets 3 and a shock-absorbing device 4. The soft-pack battery cell 1 is the smallest unit for supplying energy to the electric vehicle; the mounting plate 2 is used to facilitate the arrangement and installation of the plurality of soft-pack battery cells 1; the rivets 3 are used to form a connection between the soft-pack battery cell 1 and the mounting plate 2; the shock-absorbing device 4 is used to provide a shock-absorbing effect on the installed soft-pack battery cell 1, which can effectively reduce the impact of vibration on the normal energy supply of the soft-pack battery module.

[0032] The soft-pack battery cell 1 is a rectangular plate-shaped structure as a whole, and one side of the length direction of the soft-pack battery cell 1 has a connecting portion 11 for installation and connection with the mounting plate 2; the connection portion 11 is provided with a clearance groove 111 inside to facilitate the soft-pack battery cell 1 to form a circuit connection with other soft-pack battery cells 1, and the clearance groove 111 passes through both sides of the connection portion 11 along the thickness direction of the soft-pack battery cell 1 to form an opening; the end of the connection portion 11 away from the soft-pack battery cell 1 itself is provided with a plurality of first mounting holes 112 adapted to the rivet 3, and the first mounting holes 112 are opened in a direction parallel to the length direction of the soft-pack battery cell 1, and one end of the first mounting hole 112 is connected to the clearance groove 111 and the other end passes through the end of the connection portion 11 away from the soft-pack battery cell 1 itself to form an opening. In this embodiment, it is preferred that two first mounting holes 112 are provided on the connection portion 11, and the positions of the two first mounting holes 112 on the connection portion 11 are symmetrically distributed along the width direction of the soft-pack battery cell 1.

[0033] The mounting plate 2 is a rectangular plate-shaped structure as a whole. A plurality of second mounting holes 21 adapted to the rivet 3 are provided on the mounting plate 2 along its thickness direction. The second mounting holes 21 penetrate the mounting plate 2, and the plurality of second mounting holes 21 correspond one-to-one to the plurality of first mounting holes 112 on the plurality of connecting portions 11 on the corresponding plurality of soft-pack battery cells 1. In this embodiment, preferably, a total of four soft-pack battery cells 1 are installed on one mounting plate 2, and correspondingly, preferably, a total of eight second mounting holes 21 are provided on the mounting plate 2; and preferably, both the connecting portion 11 and the mounting plate 2 are made of copper plate material, which can effectively reduce the overall weight of the soft-pack battery cell module and reduce the overall processing cost of the soft-pack battery cell module.

[0034] The four soft-pack battery cells 1 are fixed on the mounting plate 2 by eight rivets 3. At this time, the thickness direction of the soft-pack battery cells 1 is parallel to the width direction of the mounting plate 2, and the four soft-pack battery cells 1 are evenly spaced along the width direction of the mounting plate 2. In this embodiment, the rivets 3 are preferably blind rivets. After the rivets 3 are passed through the second mounting hole 21 and the first mounting hole 112 in sequence by a corresponding rivet gun, the soft-pack battery cells 1 and the mounting plate 2 can be riveted by controlling the rivet gun; since the blind rivets and the above-mentioned operation methods are common prior arts, they will not be described in detail here, and the blind rivets are only briefly shown in the attached drawings.

[0035] Reference Figure 1 and Figure 3 The shock absorbing device 4 includes a plurality of partitions 42 and a plurality of shock absorbing components 41. The partitions 42 are used to fill the space between adjacent soft-packed cells 1 after they are installed on the mounting plate 2, and can absorb the vibration of the soft-packed cells 1 to achieve a shock absorbing effect; the shock absorbing components 41 are used to connect adjacent soft-packed cells 1, so as to facilitate the transmission and dispersion of the vibration of the soft-packed cells 1, so as to reduce the impact of the vibration on a single soft-packed cell 1.

[0036] Reference Figure 2 and Figure 3 The partition 42 is a rectangular plate-shaped structure as a whole, and the partition 42 is elastic. In this embodiment, the damping device 4 preferably includes three partitions 42 in total.

[0037] The three partitions 42 are respectively installed in the three spaces formed by the four soft-packed battery cells 1, and the two sides of the partition 42 are respectively fitted and fixedly connected with the two adjacent soft-packed battery cells 1, and the length direction and width direction of the partition 42 are respectively parallel to the length direction and width direction of the soft-packed battery cell 1. In this embodiment, the rectangular size of the partition 42 is preferably matched with the rectangular size of the soft-packed battery cell 1; in actual operation, after the four soft-packed battery cells 1 are connected to form a whole through the three partitions 42, the four soft-packed battery cells 1 are riveted and installed with the mounting plate 2.

[0038] After the four soft-packed cells 1 are riveted and installed on the mounting plate 2, a clearance space 5 for the multiple soft-packed cells 1 to form a circuit connection is formed between the three partitions 42 and the mounting plate 2, and the four clearance grooves 111 and the three clearance spaces 5 are connected to form a space that is convenient for the staff to connect the circuits of the multiple soft-packed cells 1. In this embodiment, since the circuit connection between the soft-packed cells 1 is a prior art in the field, it will not be described here in detail, and it is omitted in the drawings.

[0039] The partition 42 has thermal conductivity and can absorb the heat generated by the adjacent soft-pack battery core 1 during operation and transfer the heat to the outside to dissipate heat. In this embodiment, the partition 42 is preferably made of a thermally conductive elastomer composite material, that is, a composite material obtained by filling a low thermally conductive rubber matrix with a thermally conductive filler.

[0040] At this time, the electrical connection parts 11 of the four soft-pack battery cells 1 have a large enough space for heat dissipation, which can effectively reduce the probability of the soft-pack battery cell 1 being damaged due to overheating of the electrical connection parts 11 and causing failure of the soft-pack battery cell module.

[0041] Furthermore, when the soft-pack battery cell 1 vibrates due to the vibration, the adjacent partition 42 is subjected to the force exerted on it by the soft-pack battery cell 1, and can absorb part of the vibration while transmitting part of the vibration to another adjacent soft-pack battery cell 1, thereby effectively reducing the impact of the vibration on the soft-pack battery cell module.

[0042] Reference Figure 2 and Figure 3 Furthermore, in order to further improve the vibration absorption effect of the partition 42 and further improve the heat dissipation effect of the partition 42, a heat dissipation channel 421 is preferably opened inside the partition 42.

[0043] The heat dissipation channel 421 is distributed in a grid pattern inside the partition 42 , and has multiple openings communicating with the outside formed on the peripheral side of the partition 42 in the length and width directions, and the multiple openings are evenly spaced along the length and width directions of the partition 42 .

[0044] After the heat generated by the soft-pack battery cell 1 during operation is transferred to the adjacent partition 42, the heat can be transferred to the gas located in the heat dissipation channel 421, and then dissipated to the outside through the heat dissipation channel 421; at the same time, when the soft-pack battery cell 1 is affected by vibration and exerts a force on the adjacent partition 42, the heat dissipation channel 421 can provide a larger deformation margin for the partition 42 to be deformed by force, thereby further improving the effect of the partition 42 in absorbing vibration.

[0045] Reference Figure 1 and Figure 3The shock absorbing assembly 41 is installed on the side of the soft-pack battery cell 1 in the width direction, and at least one shock absorbing assembly 41 is installed between two adjacent soft-pack battery cells 1. In this embodiment, preferably, two shock absorbing assemblies 41 are installed between two adjacent soft-pack battery cells 1, and the two shock absorbing assemblies 41 are respectively located on both sides of the soft-pack battery cell 1 in the width direction, so the shock absorbing device 4 includes six shock absorbing assemblies 41 in total.

[0046] The shock absorbing assembly 41 includes an elastic member 411 and two connecting members 412. The elastic member 411 is a sheet-like structure extending along an arc, and the connecting member 412 is a rectangular sheet-like structure.

[0047] The two connectors 412 are respectively fixedly connected to the two adjacent soft-pack battery cells 1, and the two connectors 412 are located on the same side of the corresponding soft-pack battery cells 1 and are aligned along the thickness direction of the soft-pack battery cells 1; the two ends of the elastic member 411 are respectively fixedly connected to the ends of the two connectors 412 away from the corresponding soft-pack battery cells 1, and at this time, the elastic member 411 protrudes in the direction close to the partition 42 between the corresponding two soft-pack battery cells 1, and the protruding part of the elastic member 411 contacts and abuts against the corresponding partition 42 and is fixedly connected. In this embodiment, the length dimensions of the elastic member 411 and the connector 412 are preferably equal to the length dimension of the soft-pack battery cell 1; and the connector 412 is preferably made of rigid metal, and the elastic member 411 is made of flexible metal, which can be bent and deformed along the protruding direction thereof, and has a strong reset ability after bending and deformation.

[0048] At this time, when the soft-pack battery cell 1 is affected by vibration, the vibration can be transmitted to the adjacent soft-pack battery cell 1 through the shock-absorbing assembly 41, so that the impact of the vibration on the four soft-pack battery cells 1 is more dispersed, so as to effectively reduce the probability of the soft-pack battery cell 1 being damaged by vibration; when the soft-pack battery cell 1 vibrates and exerts a force on the adjacent partition 42, the distance between the two connecting parts 412 on the corresponding shock-absorbing assembly 41 will change. After the partition 42 is deformed by the force, it will drive the corresponding elastic part 411 to bend and deform. At this time, the elastic part 411 will drive the corresponding two connecting parts 412 to move and reset to restore the original spacing, thereby effectively reducing the impact of vibration on the soft-pack battery cell 1.

[0049] The implementation principle of a soft-pack battery cell module in the embodiment of the present application is: When the soft-pack battery module is affected by vibration, the partition 42 can effectively absorb the vibration of the soft-pack battery 1. The partition 42 is elastically deformed after the force exerted on it by the vibration of the soft-pack battery 1. While absorbing the vibration, it can also promote the heat dissipation generated by the soft-pack battery 1 during operation, so as to effectively extend the service life of the soft-pack battery 1. During this process, the shock absorbing component 41 can facilitate the transmission of vibration to multiple soft-pack battery cells 1, so that the impact of vibration on multiple soft-pack battery cells 1 is more dispersed. At the same time, the shock absorbing component 41 can suppress the vibration of the soft-pack battery cells 1, thereby effectively reducing the impact of vibration on the soft-pack battery cells 1.

[0050] Embodiment 2: The embodiment of the present application discloses a battery box installed inside an electric vehicle for driving the electric vehicle.

[0051] Reference Figure 4 and Figure 5 The battery box includes a box body 6 and multiple soft-pack battery cell modules according to Embodiment 1, and multiple soft-pack battery cell modules 7 are fixedly installed inside the box body 6.

[0052] The box body 6 is a rectangular parallelepiped structure as a whole, and the box body 6 includes a container 61, a cover 62 and a mounting frame 63. Among them, the container 61 provides space for the installation of multiple soft-pack battery modules 7, and protects the multiple soft-pack battery modules 7 after accommodating the multiple soft-pack battery modules 7; the cover 62 is used to cover the multiple soft-pack battery modules 7 installed inside the container 61, and further protects the soft-pack battery modules 7; the mounting frame 63 is fixedly installed inside the container 61, so as to facilitate the installation of multiple soft-pack battery modules 7 inside the container 61.

[0053] The container 61 has a cavity 611 inside, and the shape of the cavity 611 is also a rectangular parallelepiped, and the length direction and width direction of the cavity 611 are respectively parallel to the length direction and width direction of the container 61. The cavity 611 forms an opening at the top of the container 61, and the cover 62 is detachably connected to the container 61. After the cover 62 is connected to the top of the container 61, the opening of the cavity 611 can be covered, and the multiple soft-pack battery modules 7 installed in the cavity 611 are isolated from the outside world. In this embodiment, since the detachable connection between the cover 62 and the container 61 is a common prior art, it is not further limited here, and the related structure is omitted in the drawings.

[0054] In order to improve the heat dissipation effect of the soft-pack battery cell module 7 during operation, it is preferred that a plurality of heat dissipation holes 64 are provided on the container 61 and the cover 62. When the cover 62 is connected to the container 61, the heat dissipated by the soft-pack battery cell module 7 in the cavity 611 can be dissipated to the outside of the battery box through the plurality of heat dissipation holes 64.

[0055] The mounting frame 63 includes a support member 632 and a plurality of elevating members 631. The support member 632 is used for mounting a plurality of soft-pack battery modules 7 and supports the plurality of soft-pack battery modules 7; the elevating member 631 is used for elevating the support member 632 so that the soft-pack battery module 7 maintains a certain distance from the bottom of the cavity 611, so as to facilitate ventilation and heat dissipation at the bottom of the soft-pack battery module 7.

[0056] Reference Figure 5 and Figure 6 , multiple elevated members 631 are fixedly installed on the cavity wall at the bottom of the cavity 611, and are evenly spaced along the length direction of the container 61; the support member 632 is installed in the cavity 611 and is located above the multiple elevated members 631, and is fixedly connected to the multiple elevated members 631; an elastic first buffer pad 8 is also installed between the support member 632 and the elevated member 631, which can reduce the vibration of the battery box transmitted to the support member 632 through the elevated member 631 after being affected by the vibration. In this embodiment, the first buffer pad 8 is preferably made of rubber material; and the support member 632 is preferably connected to the elevated member 631 by bolts and nuts. At this time, the first buffer pad 8 is clamped and fixed between the support member 632 and the elevated member 631; since the above-mentioned connection method is a common prior art, it will not be described here, and the related structure of the connection is omitted in the attached drawings.

[0057] The support member 632 is in the form of a frame structure as a whole, and its hollow design facilitates the heat at the bottom of the soft-pack battery module 7 installed above it to be dissipated to the space below the support member 632, thereby further facilitating the heat dissipation of the soft-pack battery module 7.

[0058] The soft-pack battery cell module 7 is installed and fixed on the support member 632 with the mounting plate 2 located at the bottom, and after installation, the bottom surface of the mounting plate 2 will be in contact with the top surface of the support member 632; a second elastic buffer pad 9 is also installed between the mounting plate 2 and the support member 632, which can reduce the vibration of the battery box transmitted to the soft-pack battery cell module 7 through the support member 632 after the vibration. In this embodiment, the second buffer pad 9 is preferably made of rubber material, and four second buffer pads 9 are installed between each mounting plate 2 and the support member 632, respectively located at the four corners of the mounting plate 2; and the mounting plate 2 is preferably connected to the support member 632 by bolts and nuts located at the four corners of itself, and the second buffer pad 9 is clamped and fixed between the mounting plate 2 and the support member 632; since the above-mentioned connection method is a common prior art, it will not be described in detail here, and the related structures of the connection are omitted in the attached drawings.

[0059] The implementation principle of a battery box in the embodiment of the present application is: After the multiple soft-pack battery cell modules 7 are installed inside the battery box, during the energy supply process of the battery box, the heat generated by the multiple soft-pack battery cell modules 7 inside the battery box can be dissipated to the outside through the multiple heat dissipation holes 64 in the cavity 611, thereby improving the heat dissipation effect and extending the service life of the soft-pack battery cell modules 7; When the battery box is affected by vibration, the vibration will be transmitted to the multiple soft-pack battery cell modules 7 through the multiple elevated parts 631 and the support parts 632 in sequence. The multiple first buffer pads 8 and the multiple second buffer pads 9 will absorb the vibration in turn, effectively playing a shock-absorbing effect, thereby effectively reducing the impact of the vibration on the multiple soft-pack battery cell modules 7.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A soft-pack battery cell module, comprising a plurality of soft-pack battery cells (1), characterized in that: It also includes a mounting plate (2), a plurality of riveted parts (3) and a shock absorbing device (4); One side of the soft-pack battery cell (1) has a connecting portion (11), the interior of the connecting portion (11) has a clearance groove (111) for electrically connecting a plurality of the soft-pack battery cells (1), and the clearance groove (111) runs through both sides of the connecting portion (11); a plurality of first mounting holes (112) are formed on the connecting portion (11), and the first mounting holes (112) are in communication with the clearance groove (111); The mounting plate (2) is provided with a plurality of second mounting holes (21); after the plurality of soft-packed battery cells (1) are arranged on one side of the mounting plate (2), the plurality of second mounting holes (21) correspond one-to-one with and communicate with the plurality of first mounting holes (112) on the plurality of connecting parts (11); after the plurality of rivets (3) simultaneously pass through a plurality of groups of corresponding first mounting holes (112) and second mounting holes (21), the plurality of soft-packed battery cells (1) are fixedly connected to the mounting plate (2); The shock absorbing device (4) comprises a plurality of shock absorbing components (41), wherein the shock absorbing components (41) comprise an elastic member (411) and two connecting members (412); the two connecting members (412) are respectively arranged on the sides of two adjacent soft-pack battery cells (1), and the two ends of the elastic member (411) are respectively connected to the two connecting members (412); the elastic member (411) is elastic and can drive the corresponding two adjacent soft-pack battery cells (1) to maintain a stable relative position.

2. A soft-pack battery cell module according to claim 1, characterized in that: The shock absorbing device (4) further comprises a plurality of elastic partitions (42), wherein the plurality of partitions (42) are arranged at intervals on the mounting plate (2), each of the adjacent soft-pack battery cells (1) is provided with a partition (42), and both sides of the partition (42) are in contact with and abut against the adjacent soft-pack battery cells (1).

3. A soft-pack battery cell module according to claim 2, characterized in that: The partition (42) is made of a heat-conducting material.

4. A soft-pack battery cell module according to claim 3, characterized in that: The partition (42) has a heat dissipation channel (421) inside, and the heat dissipation channel (421) has a plurality of openings formed on the peripheral side of the partition (42) to communicate with the outside.

5. The soft-pack battery cell module according to claim 4, characterized in that: When the soft-pack battery core (1) is affected by vibration and exerts a force on the adjacent partition (42), the partition (42) is deformed and the shape of the corresponding heat dissipation channel (421) changes.

6. The soft-pack battery cell module according to claim 2, characterized in that: The elastic member (411) is curved in an arc shape and protrudes in a direction close to the partition (42) between the corresponding adjacent soft-pack battery cells (1); when the soft-pack battery cells (1) are not affected by vibration, the protruding portion of the elastic member (411) contacts and abuts against the corresponding partition (42).

7. The soft-pack battery cell module according to claim 6, characterized in that: The protruding portion of the elastic member (411) is fixedly connected to the corresponding partition plate (42).

8. The soft-pack battery cell module according to claim 7, characterized in that: The soft-pack battery core (1) is fixedly connected to the adjacent partition (42).

9. The soft-pack battery cell module according to claim 2, characterized in that: After the partition (42) and the soft-pack battery cell (1) are connected to the mounting plate (2), a clearance space (5) is formed between the partition (42) and the mounting plate (2), and adjacent clearance grooves (111) are connected via the corresponding clearance space (5).

10. A battery box, comprising a box body (6) and a plurality of soft-pack battery cell modules according to any one of claims 1 to 9, characterized in that: The box body (6) comprises a container (61), a cover body (62) and a mounting frame (63); The container (61) has a cavity (611) inside, the mounting frame (63) is arranged at the bottom of the cavity (611), and the cover (62) is arranged at the top of the container (61) and is detachably connected to the container (61); The container (61) and the cover (62) are both provided with a plurality of heat dissipation holes (64); when the cover (62) is connected to the container (61), the heat dissipation holes (64) are in communication with the cavity (611); The mounting frame (63) comprises a support member (632) and a plurality of elevated members (631), the elevated member (631) being fixedly connected to the bottom cavity wall of the cavity (611), the support member (632) being arranged above the plurality of elevated members (631) and being fixedly connected to the plurality of elevated members (631) at the same time, and the soft-pack battery cell module (7) being arranged above the support member (632) and being fixedly connected to the support member (632); A plurality of first buffer pads (8) are provided between the support member (632) and the elevated member (631), and a plurality of second buffer pads (9) are provided between the soft-pack battery cell module (7) and the support member (632), and both the first buffer pads (8) and the second buffer pads (9) are elastic.

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