Battery pack, energy storage assembly and power utilization system

Abstract

The utility model discloses a battery pack, an energy storage assembly and a power utilization system. The battery pack comprises a box body, a battery cell group and filling glue, an accommodating cavity is formed in the box body, the battery cell group is arranged in the accommodating cavity, and the filling adhesive is filled between the battery cell group and the cavity wall of the accommodating cavity. According to the technical scheme, the mode that the filling glue is arranged between the cavity wall of the containing cavity and the battery cell group is adopted to replace a pulling plate structure to fix and mount the battery cell group. Therefore, the mounting structure of the battery pack is simplified, the assembly difficulty of the battery pack is reduced, the volume of the battery pack is reduced, and the energy density of the battery pack is improved.

Description

Technical Field

[0001] The present application relates to the field of battery energy storage technology, and in particular to a battery pack, an energy storage component, and an electricity consumption system. Background Art

[0002] In the related art, during the manufacturing process of a battery pack, the battery cells are usually first assembled into battery cell groups, and then the battery cell groups are tightened to each other through a pull plate structure, and finally the pull plate structures are connected together to install the battery cell groups into the accommodating cavity of the battery pack body, thereby forming a complete battery pack.

[0003] However, the battery pack of this structure is complex and inconvenient to install, and the battery pack after molding is large in volume and has low energy density. Utility Model Content

[0004] The purpose of this application is to provide a battery pack, an energy storage component, and a power system, aiming to solve the problems of complex battery pack structure, inconvenient installation, and low energy density in related technologies.

[0005] To achieve the purpose of the present application, in a first aspect, the present application provides a battery pack, comprising:

[0006] A box body, wherein the box body is formed with a containing cavity;

[0007] A battery cell group is arranged in the accommodating cavity;

[0008] Filling glue, the filling glue is filled between the battery cell group and the cavity wall of the accommodating cavity.

[0009] In a possible implementation, the filling glue includes structural glue or thermal conductive glue.

[0010] In a possible implementation, the battery pack further includes a first partition, which is disposed in the accommodating cavity to divide the accommodating cavity into at least two battery compartments;

[0011] The battery pack includes a plurality of battery cell groups, each of which is disposed in each of the battery compartments, and the filling glue is filled between the battery cell groups and the battery compartments.

[0012] In a possible implementation, the battery pack further includes a second separator, wherein the second separator is connected between the box body and the first separator;

[0013] The first partition, the second partition and the box body are jointly arranged to form the battery compartment.

[0014] In a possible implementation, the second separator includes:

[0015] A first plate body, the first plate body is connected between the box body and the first partition;

[0016] a second plate body, the second plate body being connected between the box body and the first partition and spaced apart from the first plate body;

[0017] The third plate is connected between the first plate and the second plate.

[0018] In a possible implementation, the battery pack further includes two third partitions, and the two third partitions are spaced apart and arranged in the box body;

[0019] The first partition is connected between two of the third partitions.

[0020] In a possible implementation, the third partition and the box body are arranged to form an installation cavity;

[0021] The battery pack also includes a battery management system, which is disposed in the installation cavity and electrically connected to the battery cell group.

[0022] In a possible implementation, the box body has a maintenance port, and the maintenance port is connected to the installation cavity;

[0023] The battery pack further comprises a maintenance plate, and the maintenance plate cover is arranged on the maintenance opening.

[0024] In a possible implementation, the battery pack further includes a positive connector and a negative connector, the positive connector is connected to the positive electrode of the battery cell group, and the negative connector is connected to the negative electrode of the battery cell group;

[0025] One of the positive connector and the negative connector is arranged on the box body, and the other is arranged on the maintenance plate.

[0026] In a possible implementation, the battery pack further includes an insulating shield, which is fixedly connected to the box body and covers a side of the maintenance plate away from the maintenance port.

[0027] In a possible implementation, one of the insulating shield and the box body is provided with a buckle, and the other is provided with a slot, and the insulating shield and the box body are connected via the buckle and the slot.

[0028] In a possible implementation, a heightening plate is provided in the battery compartment, and the battery cell group is arranged on the heightening plate.

[0029] In a possible implementation, the accommodating cavity is provided with an opening;

[0030] The battery pack further comprises a cover plate and a first threaded member, wherein the cover plate covers the opening and the cover plate is provided with a connection hole penetrating along a thickness direction thereof;

[0031] The first threaded member is arranged on a side of the cover plate facing the opening, and the first threaded member has a first threaded hole, which is communicated with the connecting hole.

[0032] In a possible implementation, the battery pack further includes a first connecting piece and two second screw members; the first connecting piece has a first end and a second end that are oppositely disposed;

[0033] The first end is provided with a first through hole, the first through hole is connected to the connecting hole, and one of the second threaded members passes through the first through hole and the connecting hole and extends into the first threaded hole to connect the first end to the cover plate;

[0034] The second end is provided with a second through hole, and another second screw member passes through the second through hole to connect the second end with the support body.

[0035] In a possible implementation, the battery cell group includes a plurality of battery cells, and the battery cells are connected in series or in parallel to form the battery cell group.

[0036] In a second aspect, the present application further proposes an energy storage assembly, the energy storage assembly comprising a plurality of battery packs, the battery pack comprising:

[0037] A box body, wherein the box body is formed with a containing cavity;

[0038] A battery cell group is arranged in the accommodating cavity;

[0039] Filling glue, the filling glue is filled between the battery cell group and the cavity wall of the accommodating cavity.

[0040] In a possible implementation, the battery packs are stacked along a first direction;

[0041] On the opposite surfaces of each adjacent battery pack, one of them is provided with a protrusion, and the other is provided with a groove, and the protrusion extends into the groove.

[0042] In a possible implementation, at least part of the protrusions are provided with adjustment holes;

[0043] The energy storage assembly further includes a height adjustment structure, the height adjustment structure including: a mounting pad and a threaded rod, the mounting pad being used to contact the support surface;

[0044] One end of the threaded rod is connected to the mounting pad, and the other end passes through the adjustment hole to be threadedly connected to the battery pack.

[0045] In a possible implementation, the battery pack further includes a connection block, the connection block is disposed on the box body, and the connection block has a second threaded hole connected to the adjustment hole;

[0046] The threaded rod passes through the adjustment hole and is connected to the second threaded hole.

[0047] In a third aspect, the present application further proposes an electric power system, the electric power system comprising an energy storage component, the energy storage component comprising a battery pack, the battery pack comprising:

[0048] A box body, wherein the box body is formed with a containing cavity;

[0049] A battery cell group is arranged in the accommodating cavity;

[0050] Filling glue, the filling glue is filled between the battery cell group and the cavity wall of the accommodating cavity.

[0051] The technical solution of the present application fixes and installs the battery pack by setting a filling glue between the cavity wall and the battery pack instead of the pull plate structure. In this way, the installation structure of the battery pack is simplified, the difficulty of assembling the battery pack is reduced, the volume of the battery pack is reduced, and the energy density of the battery pack is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the energy storage assembly provided in this application;

[0054] Figure 2 for Figure 1 Exploded view of the battery pack;

[0055] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the middle box without the cover plate;

[0056] Figure 4 for Figure 1 Front view of the middle box without the cover;

[0057] Figure 5 This is an exploded view of the box, maintenance panel, and insulation cover;

[0058] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure of the middle maintenance plate;

[0059] Figure 7 for Figure 5 A schematic diagram of the three-dimensional structure of an embodiment of the middle insulating shield;

[0060] Figure 8 for Figure 5 A magnified image at position C;

[0061] Fig. 9 for Figure 5 A magnified view at D;

[0062] Fig.10 for Figure 5 A schematic diagram of the three-dimensional structure of another embodiment of the middle insulating shield;

[0063] Fig.11 for Figure 4 A cross-sectional view at position E;

[0064] Fig.12 for Figure 4 A magnified view at point A;

[0065] Fig.13 for Figure 4 A magnified view at position B;

[0066] Fig.14 for Figure 1 Schematic diagram of the assembly of the mid-height adjustment structure and the box;

[0067] Fig.15 for Figure 2 Schematic diagram of the three-dimensional structure of the middle cover.

[0068] Description of reference numerals:

[0069] 1000 Energy storage components;

[0070] 100 battery pack;

[0071] 1 box body, 11 receiving cavity, 111 battery compartment, 112 opening, 12 maintenance port, 13 installation cavity, 14 card slot, 15 protrusion, 151 adjustment hole, 16 groove;

[0072] 2 battery packs;

[0073] 3 first separator;

[0074] 4 second separator, 41 first plate, 42 second plate, 43 third plate;

[0075] 5 third partition;

[0076] 6 insulating shield, 61 buckle, 62 notch, 63 snap buckle;

[0077] 7. Raised board;

[0078] 8 maintenance plate, 81 handle, 82 body, 83 connecting edge;

[0079] 9Battery management system;

[0080] 10 height adjustment structure, 101 mounting pad, 102 threaded rod;

[0081] 20 connecting block, 201 second threaded hole;

[0082] 30 first connecting piece;

[0083] 40 second connecting piece;

[0084] 50 cover;

[0085] 60 first threaded member;

[0086] 70 positive connector;

[0087] 80 Negative connector. DETAILED DESCRIPTION

[0088] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0089] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0090] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0091] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0092] When assembling a battery pack in the related art, the cells are usually assembled into a cell group, and then the cell group is clamped in the receiving cavity of the battery pack box to form a battery pack. Under this battery pack structure, the gap between the cell group and the receiving cavity of the box is large, the heat dissipation capacity of the cell group is poor, and in order to ensure that the receiving cavity and the cell group can fit completely, there are high requirements for the accuracy of the receiving cavity, and the production cost of the battery pack box is high.

[0093] To solve the above problems, the present application proposes an electricity system, which can be a household electricity system or an industrial electricity system, and the present application does not limit this. The electricity system includes an energy storage component and an electrical device, and the energy storage component is used to provide electricity to the electrical device to maintain the normal use of the electrical device. There can be one or more energy storage components, and the present application does not limit this. When there are multiple energy storage components, the energy storage components can be connected in series, in parallel, or in series and in parallel at the same time, and the present application does not limit this.

[0094] Please refer to Figure 1 and Figure 2 The energy storage component 1000 includes a plurality of battery packs 100, each of which is stacked and electrically connected to each other to form the energy storage component 1000. The battery pack 100 includes: a box 1, a battery cell group 2, and a filling glue. The technical solution of the present application fixes and installs the battery cell group 2 by providing a filling glue between the cavity wall of the accommodating cavity 11 and the battery cell group 2 instead of the pull plate structure. In this way, the installation structure of the battery pack 100 is simplified and the difficulty of assembling the battery pack 100 is reduced. The volume of the battery pack 100 is reduced and the energy density of the battery pack is improved.

[0095] Below, the battery pack 100 provided in the present application will be described in detail with reference to the accompanying drawings.

[0096] Please refer to Figure 3 and Figure 4 The battery pack 100 includes a box 1, which serves as a supporting frame of the battery pack 100 and is used to provide support and connection for the components of the battery pack 100. The box 1 may be square, rectangular, or other regular or irregular shapes, which is not limited in this application. The box 1 may be made of aluminum, copper, or other conductive or non-conductive materials, which is not limited in this application.

[0097] The box body 1 is formed with a receiving cavity 11, and the battery cell group 2 is installed in the receiving cavity 11. The battery cell group 2 includes a plurality of battery cells, and the battery cells are connected in parallel and in series to form the battery cell group 2. The battery cell group 2 serves as an energy storage unit of the battery pack 100, and is used to store and provide electricity to the electrical equipment to maintain normal use of the electrical equipment.

[0098] The filling glue is filled between the battery cell group 2 and the cavity wall of the accommodating cavity 11. The filling glue is used to replace the pull plate structure to install the battery cell group 2, so as to simplify the structure of the battery pack 100 and reduce the difficulty of assembling the battery pack 100. At the same time, the filling glue can also reduce the installation volume of the battery cell group 2, reduce the space occupied by the battery cell group 2 for the battery pack 100, reduce the volume of the battery pack 100, and improve the energy density of the battery pack 100. The filling glue can be a structural glue, or a thermal conductive glue, or a structural thermal conductive glue mixed with a structural glue and a thermal conductive glue. When the filling glue is a structural glue, the filling glue can be an epoxy resin structural glue or a polyurethane structural glue. The structural glue can improve the connection strength between the battery cell group 2 and the accommodating cavity 11, and improve the stability of the connection between the battery cell group 2 and the accommodating cavity 11. When the filling glue adopts thermal conductive glue, the filling glue can be acrylic thermal conductive glue, polyurethane thermal conductive glue, or epoxy resin thermal conductive glue. The thermal conductive glue can increase the thermal conductivity of the battery cell group 2 to the wall of the accommodating cavity 11, improve the heat dissipation effect of the battery cell group 2, and enhance the stability of the operation of the battery cell group 2. When the filling glue adopts structural thermal conductive glue, the structural thermal conductive glue can be thermal conductive silicone grease glue or thermal conductive silica gel. The structural thermal conductive glue can not only improve the connection strength between the battery cell group 2 and the accommodating cavity 11, but also increase the thermal conductivity of the battery cell group 2 to the wall of the accommodating cavity 11, improve the heat dissipation effect of the battery cell group 2, and improve the stability of the operation of the battery cell group 2.

[0099] The battery pack 100 also includes a first separator 3, which is disposed in the accommodating cavity 11 to divide the accommodating cavity 11 into at least two battery compartments, the battery cell group 2 is disposed in the battery compartment, and the filling glue is filled between the battery cell group 2 and the battery compartment. The technical solution of the present application divides the accommodating cavity 11 into multiple battery compartments 111 through the first separator 3, and integrates multiple battery cell groups 2 into the same battery pack 100 through the battery compartment, so as to increase the capacity of the battery pack 100 for the battery cell group 2, reduce the gap between the battery cell group 2 and the battery cell group 2, and improve the energy density of the battery pack 100.

[0100] The battery pack 100 also includes a second partition 4, which is connected between the case 1 and the first partition 3. The first partition 3, the second partition 4 and the case 1 are together arranged to form a battery compartment 111. There are many ways to connect the second partition 4 to the case 1 and the first partition 3. The second partition 4 can be connected between the case 1 and the first partition 3 by bonding, or fixed between the case 1 and the first partition 3 by riveting, or fixed between the case 1 and the first partition 3 by welding, and the present application does not impose any restrictions on this. The second partition 4 can be arranged perpendicularly to the first partition 3, or can be arranged obliquely, and the present application does not impose any restrictions on this. In one possible method of the present application, the second partition 4 is arranged perpendicularly to the first partition 3, so that the battery compartment 111 separated by the second partition 4 can fit the outer contour of the battery cell group 2, thereby improving the stability of the battery cell group 2 installed in the battery compartment 111. The second partition 4 can optimize the arrangement of the battery compartment 111 in the box 1. Imagine that if there is only the first partition 3, the battery compartment 111 can only be arranged in one direction. After the second partition 4 is introduced, the battery compartment 111 can be distributed in the box 1 in both the vertical direction and the horizontal direction, thereby improving the space utilization of the battery compartment 111 for the box 1. Secondly, the second partition 4 can provide support for the first partition 3, thereby improving the stability of the first partition 3 supporting the battery cell group 2.

[0101] The second partition 4 includes a first plate 41, a second plate 42 and a third plate 43. The first plate 41 is connected between the box body 1 and the first partition 3, the second plate 42 is connected between the box body 1 and the first partition 3, and the third plate 43 is connected between the first plate 41 and the second plate 42. It can be understood that compared with the solid setting of the second partition 4, there is no interval between the first plate 41 and the second plate 42, but they are directly connected. In this embodiment, the first plate 41 and the second plate 42 are arranged at intervals, and the third plate 43 is connected between the first plate 41 and the second plate 42 to strengthen the supporting strength of the first plate 41 and the second plate 42. In this way, the supporting strength of the second partition 4 can be guaranteed, and the weight of the second partition 4 can be reduced, thereby reducing the load-bearing capacity of the first partition 3 and extending the service life of the first partition 3.

[0102] The battery pack 100 also includes a third partition 5, which is spaced apart in the box body 1. The first partition 3 is connected between two third partitions 5. The third partition 5 is used to cooperate with the first partition 3 to divide the box body 1, so as to separate more functional areas in the box body 1, thereby improving the utilization rate of the space of the box body 1.

[0103] Please refer to Figure 5The battery pack 100 also includes a battery management system 9 (BMS), which is electrically connected to the battery cell group 2 and can monitor and collect the status parameters of the energy storage battery in real time, including but not limited to: battery cell group 2 voltage, battery cell group 2 pole temperature, battery cell group 2 loop current, battery cell group 2 terminal voltage, battery cell group 2 system insulation resistance, etc. In one embodiment of the present application, the third partition 5 and the box body 1 are surrounded to form an installation cavity 13, and the battery management system 9 is arranged in the installation cavity 13. The third partition 5 separates the battery management system 9 from the battery cell group 2, so as to avoid electric shock caused by the maintenance tool touching the battery cell group 2 when the operator is repairing the battery management system 9, thereby protecting the operator's safety.

[0104] The housing 1 has a maintenance port 12, which is connected to the installation cavity 13. The operator can inspect the battery management system 9 in the installation cavity 13 through the maintenance port 12. The installation cavity 13 and the maintenance port 12 can be located at the front and rear sides of the housing 1, or at the left and right sides of the housing 1. The present application does not limit this. In one embodiment of the present application, the battery pack 100 is fixed to a support body along a second direction. The support body can be a wall or a bracket. The present application does not limit this. The second direction can be left and right, or front and back. The present application does not limit this. The maintenance port 12 is opened in the housing 1 along a third direction, wherein the third direction and the second direction are two intersecting directions. In this way, the installation of the battery pack 100 can be prevented from affecting the maintenance of the maintenance port 12, thereby improving the convenience of maintenance of the battery pack 100.

[0105] The battery pack 100 also includes a maintenance plate 8, which is covered on the maintenance port 12 to prevent external dust and impurities from entering the installation cavity 13 from the maintenance port 12 and affecting the normal use of the battery management system 9. A handle 81 is provided on the maintenance plate 8 to facilitate the installation and removal of the maintenance plate 8. In one embodiment of the present application, the maintenance plate 8 is fixed to the box body 1 by a first threaded member, and the control panel and electrical plug-in of the battery management system 9 are integrated on the maintenance plate 8. By removing the first thread from the maintenance plate 8, the battery management system 9 can be maintained, thereby improving the convenience of maintenance of the battery pack 100.

[0106] Please refer to Figure 6 In one embodiment of the present application, the maintenance plate 8 includes a body 82 and a connecting edge 83. The body 82 covers the maintenance opening 12. One end of the connecting edge 83 is connected to the body 82, and the other end extends to a side away from the maintenance opening 12. The setting of the connecting edge 83 can strengthen the strength of the body 82, thereby strengthening the strength of the maintenance plate 8 and improving the reliability of the maintenance plate 8.

[0107] Please refer to Figure 2The battery pack 100 further includes a positive connector 70 and a negative connector 80, one of which is disposed on the housing 1, and the other is disposed on the maintenance board 8. The positive connector 70 is connected to the positive electrode of the battery cell group 2, and the negative connector 80 is connected to the negative electrode of the battery cell group 2. The battery cell group 2 is connected to an external electrical device through the positive connector 70 and the negative connector 80. In one embodiment of the present application, the positive connector 70 is disposed on the housing 1, and the negative connector 80 is disposed on the maintenance board 8. In this way, the positive connector 70 and the negative connector 80 are disposed on different structures, thereby reducing the possibility of the positive connector 70 and the negative connector 80 being electrically connected to each other during maintenance of the battery pack 100, reducing the risk of short circuit of the battery 100, and protecting the safety of maintenance personnel.

[0108] Please refer to Figure 5 and Figure 7 The battery pack 100 also includes an insulating shield 6, which is fixed to the shell and is provided on the maintenance board 8. The maintenance board 8 is provided with an escape opening for the insulating shield 6 to extend into. The insulating shield 6 can be made of plastic, rubber, or other insulating materials, and the present application does not impose any restrictions on this. The provision of the insulating shield 6 can, on the one hand, prevent external dust from contacting the maintenance board 8 and thereby affecting the electrical plug integrated on the maintenance board 8; on the other hand, it can block the current of the maintenance board 8 to reduce the possibility of leakage of electricity from the maintenance board 8.

[0109] Please combine Figure 5 , Figures 7 to 9 , the insulating shield 6 can be connected to the box body 1 by threads, or can be attached to the box body 1 by magnetism, and the present application does not impose any restrictions on this. In one possible implementation mode of the present application, one of the insulating shield 6 and the box body 1 is provided with a buckle 61, and the other is provided with a slot 14, and the insulating shield 6 and the box body 1 are connected by the buckle 61 and the slot 14. Exemplarily, in one possible implementation mode of the present application, the slot 14 is provided on the box body 1, and the buckle 61 is provided on the insulating shield 6, and the buckle 61 of the insulating shield 6 is clamped in the slot 14 of the box body 1, so that the insulating shield 6 is connected to the box body 1. Compared with threads or other connection methods, the buckle 61 and the slot 14 have a simple structure and are quick to disassemble and assemble, which can effectively improve the assembly and disassembly efficiency of the battery pack 100.

[0110] Please refer to Figure 7 In one embodiment of the present application, a notch 62 is provided on the insulating shield 6, and the notch 62 is used to provide leverage for the tool for disassembling the insulating shield 6 when the insulating shield 6 is disassembled, so as to facilitate the disassembly of the insulating shield 6.

[0111] Please refer to Fig.10It can be understood that in other possible implementations of the present application, the insulating shield 6 may not be provided with the notch 62, and the insulating shield 6 may also be connected to the box body 1 through the spring buckle 63. Specifically, in this embodiment, the insulating shield 6 is provided with a spring buckle 63, and the spring buckle 63 and the insulating shield 6 are surrounded to form a snap groove, and the box body 1 is snapped into the snap groove, so as to realize the connection between the insulating shield 6 and the box body 1.

[0112] Please refer to Fig.11 The battery pack 100 also includes a heightening plate 7, which is arranged in the battery compartment 111. One heightening plate 7 can be provided, two heightening plates 7 can be provided, or multiple heightening plates 7 can be provided. The present application does not limit this. In one embodiment of the present application, two heightening plates 7 are provided, and the two ends of the battery cell group 2 are respectively mounted on two heightening plates 7. It can be understood that if the battery cell group 2 leaks, the leakage of the battery cell group 2 will accumulate to the bottom of the battery compartment 111 under the action of gravity. The provision of the heightening plate 7 can separate the battery cell group 2 from the bottom of the battery compartment 111, thereby preventing the battery leakage from affecting other intact battery cell groups 2 and extending the service life of the battery pack 100. On the other hand, the provision of the heightening plate 7 can also increase the strength of the battery compartment 111, reduce the possibility of deformation of the box body 1 when the battery pack 100 is stacked up and down, and extend the stacking time of the battery pack 100.

[0113] Please refer to Figure 1 In the energy storage assembly 1000, the battery packs 100 may be arranged separately or stacked on each other, and the present application does not impose any restrictions on this. In one possible implementation of the present application, the battery packs 100 are stacked on each other along a first direction, so as to reduce the distance between the battery packs 100 and the battery packs 100, reduce the volume of the energy storage assembly 1000, and improve the energy density of the energy storage assembly 1000. The first direction may be the front-to-back direction, the left-to-right direction, or the up-to-down direction, and the present application does not impose any restrictions on this. For example, in one possible implementation of the present application, the first direction is set to the up-and-down direction, so as to reduce the occupation of the left-to-right or the front-to-back space by the energy storage assembly 1000.

[0114] Please refer to Figure 4 , Fig.12 and Fig.13 In one possible implementation mode of the present application, on the opposite surfaces of each adjacent battery pack 100 or each adjacent box 1, one of them is provided with a protrusion 15 and the other is provided with a groove 16, and the protrusion 15 extends into the groove 16, so as to provide guidance for the mutual stacking of each adjacent battery pack 100, thereby improving the installation efficiency of the energy storage assembly 1000.

[0115] Please refer to Figure 1The energy storage assembly 1000 also includes a height adjustment structure 10, which includes: a mounting pad 101 and a threaded rod 102. The mounting pad 101 is used to contact the support surface to support the battery pack 100 on the support surface. The support surface can be the ground or a platform bracket, and this application does not limit this. The threaded rod 102 is threadedly connected to the battery pack 100, so as to adjust the height of the battery pack 100 from the support surface to avoid the impact of ground water on the battery pack 100.

[0116] Please refer to Fig.14 In one possible implementation of the present application, at least part of the protrusions 15 are provided with adjustment holes 151, and the adjustment holes 151 are used for the height adjustment structure 10 to pass through. Specifically, the battery packs 100 are stacked in the up-down direction, and the bottom of the box 1 of the battery pack 100 close to the support surface is provided with a protrusion 15, and the protrusion 15 is provided with an adjustment hole 151. One end of the threaded rod 102 is connected to the mounting pad 101, and the other end passes through the adjustment hole 151 to be threadedly connected to the battery pack 100. In this way, the energy storage assembly 1000 is supported on the support surface to avoid water accumulation or other situations on the support surface, which may affect the use of the energy storage assembly 1000.

[0117] There are many ways to adjust the height of the battery pack 100 by the threaded rod 102. A nut can be set inside the threaded rod 102, and the box 1 can be held on the threaded rod 102 by the nut. The height of the battery pack 100 can be adjusted by adjusting the position of the nut on the threaded rod 102. In one embodiment of the present application, the battery pack 100 also includes a connecting block 20, which is arranged on the box 1. The connecting block 20 has a second threaded hole 201 connected to the adjustment hole 151, and the threaded rod 102 passes through the adjustment hole 151 and is connected to the second threaded hole 201. By changing the relative position of the connecting block 20 to the threaded rod 102, the height of the battery pack 100 can also be adjusted. Moreover, compared with the use of nuts, the adjustment reliability of the connecting block 20 is higher, and the structural reuse of the protrusion 15 can be achieved (that is, the protrusion 15 can be used as a connection height adjustment structure 10 in addition to positioning), which is conducive to the optimization of the structure of the battery pack 100.

[0118] Please refer to Figure 1 The energy storage assembly 1000 further includes a first connecting piece 30, which has a first end and a second end arranged opposite to each other, the first end is connected to the battery pack 100, and the second end is connected to the support body, so that the battery pack 100 is fixed on the support body, thereby improving the stability of the battery pack 100. It should be noted that the support body can be a wall or other supporting structure, and this application does not limit this.

[0119] There are many ways to connect the first connecting piece 30 and the battery pack 100. The first connecting piece 30 and the battery pack 100 can be connected by welding or by threading. Figure 2 and Fig.15 In one embodiment of the present application, the first end of the first connecting piece 30 is provided with a first through hole, and the second end of the first connecting piece 30 is provided with a second through hole. The accommodating cavity 11 is provided with an opening 112, and the battery pack 2 can be placed into the accommodating cavity 11 from the opening 112. The battery pack 100 also includes a cover plate 50, a first threaded member 60 and two second threaded members. The cover plate 50 is covered on the opening 112. The cover plate 50 is used to seal the accommodating cavity to prevent dust or water vapor from entering the accommodating cavity through the opening and affecting the normal use of the battery pack in the accommodating cavity. The cover plate 50 is provided with a connecting hole that penetrates along its thickness direction. The first threaded member 60 is provided on the side of the cover plate 50 facing the opening. The first threaded member 60 can be welded to the cover plate 50 or bonded to the cover plate 50, and the present application does not limit this. The first threaded member 60 has a first threaded hole, and the first threaded hole is connected to the connecting hole. The first threaded member 60 can be a riveted nut or a flat head nut, and the present application does not limit this.

[0120] Among the two second threaded members, one of the second threaded members passes through the first through hole, and the connecting hole extends into the first threaded hole to connect the first connecting piece 30 to the cover plate 50, and the other second threaded member passes through the second through hole to connect the first connecting piece 30 to the support body, so as to achieve the connection between the battery pack 100 and the support body. Compared with other connection methods, the present application can effectively reduce the difficulty of connecting the cover plate 50 and the first connecting piece 30 by reserving the first threaded member 60 on the cover plate 50 and connecting the cover plate 50 and the first connecting piece 30 through the first threaded member 60, improve the stability of the connection between the cover plate 50 and the first connecting piece 30, improve the stability of the connection between the battery pack 100 and the support body, and improve the impact resistance of the battery pack 100.

[0121] Please refer to Figure 1The energy storage assembly 1000 also includes a second connecting piece 40. When the battery pack 100 is arranged in a stacked manner, the second connecting piece 40 is connected between each adjacent battery pack 100 to achieve the connection of the battery pack 100. The second connecting piece 40 can be arranged in the front and rear direction of the battery pack 100, can be arranged in the left and right direction of the battery pack 100, and can also be arranged in the upper and lower directions of the battery pack 100. This application does not limit this. In one embodiment of the present application, the setting direction of the second connecting piece 40 avoids the installation direction of the battery pack 100 and is the same as the setting direction of the maintenance port 12, so as to facilitate the connection of the battery pack 100. In another possible implementation mode of the present application, the second connecting piece 40 is disposed in the insulating shield 6, and is passed through the insulating shields 6 through the notch 62 provided on the insulating shield 6. When the battery packs 100 are connected to each other, the insulating shield 6 can be removed from the box body 1 first, and after the second connecting piece 40 is connected to the battery pack 100, the insulating shield 6 can be installed on the box body 1. In this way, the space for installing the battery pack 100 can be saved, and the aesthetics of the battery pack 100 can be improved.

[0122] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0123] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A battery pack, characterized in that: include: A box body, wherein the box body is formed with a containing cavity; A battery cell group is arranged in the accommodating cavity; Filling glue, the filling glue is filled between the battery cell group and the cavity wall of the accommodating cavity; The battery pack further includes a first partition, which is disposed in the accommodating cavity to divide the accommodating cavity into at least two battery compartments; The battery pack includes a plurality of battery cell groups, each of which is disposed in each of the battery compartments, and the filling glue is filled between the battery cell groups and the battery compartments.

2. The battery pack according to claim 1, characterized in that: The filling glue is structural glue or thermal conductive glue.

3. The battery pack according to claim 1, wherein: The battery pack further includes a second separator connected between the box and the first separator; The first partition, the second partition and the box body are jointly arranged to form the battery compartment.

4. The battery pack according to claim 3, characterized in that: The second separator comprises: A first plate body, the first plate body is connected between the box body and the first partition; a second plate body, the second plate body being connected between the box body and the first partition and spaced apart from the first plate body; The third plate is connected between the first plate and the second plate.

5. The battery pack according to claim 1, wherein: The battery pack further comprises two third partitions, and the two third partitions are arranged in the box body at intervals; The first partition is connected between two of the third partitions.

6. The battery pack according to claim 5, characterized in that: The third partition and the box body are arranged to form a mounting cavity; The battery pack also includes a battery management system, which is disposed in the installation cavity and electrically connected to the battery cell group.

7. The battery pack according to claim 6, characterized in that: The box body has a maintenance port, and the maintenance port is connected to the installation cavity; The battery pack further comprises a maintenance plate, and the maintenance plate cover is arranged on the maintenance opening.

8. The battery pack according to claim 7, characterized in that: The battery pack further comprises a positive connector and a negative connector, wherein the positive connector is connected to the positive electrode of the battery cell group, and the negative connector is connected to the negative electrode of the battery cell group; One of the positive connector and the negative connector is arranged on the box body, and the other is arranged on the maintenance plate.

9. The battery pack according to claim 7, characterized in that: The battery pack further comprises an insulating shield, which is fixedly connected to the box body and covers a side of the maintenance plate away from the maintenance port.

10. The battery pack according to claim 9, characterized in that: One of the insulating shield and the box body is provided with a buckle, and the other is provided with a slot, and the insulating shield and the box body are connected via the buckle and the slot.

11. The battery pack according to claim 1, wherein: A heightening plate is provided in the battery compartment, and the battery cell assembly is arranged on the heightening plate.

12. The battery pack according to claim 1, wherein: The accommodating cavity is provided with an opening; The battery pack further comprises a cover plate and a first threaded member, wherein the cover plate covers the opening and the cover plate is provided with a connection hole penetrating along a thickness direction thereof; The first threaded member is arranged on a side of the cover plate facing the opening, and the first threaded member has a first threaded hole, which is communicated with the connecting hole.

13. The battery pack according to claim 12, characterized in that: The battery pack further includes a first connecting piece and two second threaded members; the first connecting piece has a first end and a second end that are oppositely disposed; The first end is provided with a first through hole, the first through hole is connected to the connecting hole, and one of the second threaded members passes through the first through hole and the connecting hole and extends into the first threaded hole to connect the first end to the cover plate; The second end is provided with a second through hole, and another second screw member passes through the second through hole to connect the second end with the support body.

14. The battery pack according to claim 1, wherein: The battery cell group includes a plurality of battery cells, and the battery cells are connected in series or in parallel to form the battery cell group.

15. An energy storage assembly, characterized in that: Comprising a plurality of battery packs according to any one of claims 1 to 14.

16. The energy storage assembly according to claim 15, characterized in that: The battery packs are stacked along a first direction; On the opposite surfaces of each adjacent battery pack, one of them is provided with a protrusion, and the other is provided with a groove, and the protrusion extends into the groove.

17. The energy storage assembly according to claim 16, characterized in that: At least some of the protrusions are provided with adjustment holes; The energy storage assembly further includes a height adjustment structure, the height adjustment structure including: a mounting pad and a threaded rod, the mounting pad being used to contact the support surface; One end of the threaded rod is connected to the mounting pad, and the other end passes through the adjustment hole to be threadedly connected to the battery pack.

18. The energy storage assembly according to claim 17, characterized in that: The battery pack further includes a connecting block, which is disposed on the box body and has a second threaded hole connected to the adjustment hole; the threaded rod passes through the adjustment hole and is connected to the second threaded hole.

19. An electricity system, characterized in that: Comprising the energy storage assembly as described in any one of claims 15 to 18.

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