Box body, energy storage equipment and power utilization system

Abstract

A box body, an energy storage device and a power utilization system, the box body comprises a fixing member, a mounting member, an adjusting member and a locking member, the mounting member and the fixing member are arranged oppositely, the fixing member and the mounting member are suitable for forming an accommodating space, the accommodating space is used for accommodating a plurality of cells arranged in sequence, the fixing member is used for abutting against one end of the plurality of cells in the arrangement direction, and the adjusting member is used for adjusting the mounting member. The adjusting part is accommodated in the accommodating space, the adjusting part is used for abutting against the other ends of the battery cells in the arrangement direction, the locking part is movably connected with the mounting part, and the locking part abuts against the adjusting part, so that the adjusting part compresses the battery cells. A plurality of battery cells are accurately restrained to the required size, the installation is simple, convenient and rapid, and the manufacturing cost is relatively low.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to a box, energy storage equipment and an electricity system. Background Art

[0002] The research and development of new and renewable energy sources, along with the search for advanced methods to improve energy efficiency, has become a primary global concern. For a major energy producer and consumer like my country, there's a need for both energy conservation and emission reduction, as well as energy growth to support economic development. This necessitates the vigorous development of the energy storage industry.

[0003] Energy storage batteries are a common new energy storage device. They convert electrical energy into chemical energy for storage through chemical cells and then convert the chemical energy back into electrical energy when needed. Battery energy storage devices offer advantages such as small size, light weight, and high energy density, making them suitable for low-power applications.

[0004] In order to fix the battery cells and improve the volume utilization of the battery pack, a common method is to compress and fix the battery cells to achieve the effect of arranging more battery cells in the same volume of space. However, most current battery packs use a pull plate and side plate method to fix multiple battery cells. Due to the large dimensional tolerances of multiple battery cells, this method cannot accurately constrain multiple battery cells to the required size, and the installation requirements are high, time-consuming, and the manufacturing cost is high. Utility Model Content

[0005] The purpose of the utility model is to provide a box, energy storage equipment and power system to solve the problem that the method of pulling plates and adding side plates cannot accurately constrain the battery cells to the required size, and has high installation requirements, long time consumption and high manufacturing costs.

[0006] In order to achieve the purpose of the present invention, the present invention provides the following technical solutions:

[0007] In the first aspect, the utility model provides a box body, comprising: a fixing part; a mounting part, which is arranged opposite to the fixing part, and the fixing part and the mounting part are suitable for forming a accommodating space, and the accommodating space is used to accommodate a plurality of battery cells arranged in sequence, and the fixing part is used to abut against one end of the arrangement direction of the plurality of battery cells; an adjusting part, which is accommodated in the accommodating space, and the adjusting part is used to abut against the other end of the arrangement direction of the plurality of battery cells; a locking part, which is movably connected to the mounting part, and the locking part abuts against the adjusting part so that the adjusting part presses the plurality of battery cells.

[0008] In one embodiment, the adjusting member is arranged between the mounting member and the fixing member, the plurality of battery cells are used to abut against the fixing member and the adjusting member, the mounting member is provided with a locking hole, and the locking member is cooperatively connected with the locking hole.

[0009] In one embodiment, there are multiple locking holes, and the multiple locking holes are arranged at intervals on the mounting member.

[0010] In one embodiment, the mounting member is further provided with a first adjustment hole, and the first adjustment hole is used for a pre-tightening member to pass through so that the pre-tightening member applies a pre-tightening force to the adjusting member.

[0011] In one embodiment, there are a plurality of first adjustment holes, and the plurality of first adjustment holes are arranged at intervals on the mounting member.

[0012] In one embodiment, the box body also includes: a bottom plate and a top plate, the bottom plate and the top plate are arranged opposite to each other; and a third side plate and a fourth side plate, the third side plate and the fourth side plate are arranged opposite to each other, the third side plate and the fourth side plate are both connected to the fixing member and the mounting member, and the bottom plate, the top plate, the fixing member, the mounting member, the third side plate and the fourth side plate form the accommodating space; after the adjusting member presses the multiple battery cells, the multiple battery cells are in contact with the fixing member, the bottom plate, the third side plate and the fourth side plate.

[0013] In one embodiment, the box body further includes: at least one layer plate, which is arranged between the bottom plate and the top plate, and the two ends of the layer plate are respectively connected to the fixing part and the mounting part, at least one of the layer plates divides the accommodating space into multiple sub-spaces, and the number of the adjusting parts is multiple, and at least one adjusting part is arranged in each of the sub-spaces.

[0014] In one embodiment, a buffer member is provided on a surface of the adjusting member facing the fixing member.

[0015] In one embodiment, an insulating film is attached to the inner wall of the accommodating space.

[0016] In one embodiment, a second side plate is further provided on a side of the mounting member facing away from the fixing member, and a second adjustment hole is opened on the second side plate, and the second adjustment hole is arranged corresponding to the first adjustment hole.

[0017] In a second aspect, the present invention further provides an energy storage device, comprising at least one energy storage device, wherein the energy storage device comprises a battery cell and a box body described in any one of the various embodiments of the first aspect, and the battery cell is disposed in the box body.

[0018] In one embodiment, there are multiple energy storage devices, each of the box is provided with at least one battery cell, the multiple energy storage devices are arranged along the first direction, and the multiple energy storage devices are electrically connected through plug-in terminals, or the multiple energy storage devices are electrically connected through wiring harnesses.

[0019] In one embodiment, a plurality of the energy storage devices are electrically connected via a wiring harness, and a gripping member is provided on the side of at least one of the energy storage devices, wherein the gripping member includes: a gripping portion, which is suitable for gripping to move the box; and a wiring harness arranging portion, which is suitable for limiting the wiring harness connecting the plurality of the energy storage devices.

[0020] In one embodiment, the battery cell comprises a soft-pack battery cell.

[0021] In a third aspect, the present invention further provides an electricity consumption system, comprising an electricity consumption device and an energy storage device as described in any one of the various embodiments of the second aspect, wherein the energy storage device is used to supply power to the electricity consumption device.

[0022] By arranging a fixing part, a mounting part, an adjusting part and a locking part, an accommodating space is formed between the fixing part and the mounting part, and the accommodating space is used to accommodate multiple battery cells arranged in sequence, the fixing part is used to abut against one end in the arrangement direction of the multiple battery cells, the adjusting part is accommodated in the accommodating space, and the adjusting part is used to abut against the other end in the arrangement direction of the multiple battery cells, the locking part is movably connected to the mounting part, and the locking part abuts against the adjusting part so that the adjusting part presses the multiple battery cells, so that the box body presses and fixes the multiple battery cells while absorbing the dimensional tolerances of the multiple battery cells, and accurately constrains the multiple battery cells to the required size. The installation is simple and quick, and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 is a cross-sectional view of an energy storage device according to an embodiment;

[0025] Figure 2 is a cross-sectional view of an energy storage device according to another embodiment;

[0026] Figure 3 is a side sectional view of an energy storage device according to an embodiment.

[0027] Description of reference numerals:

[0028] 1000-Energy storage equipment;

[0029] 100-cabinet;

[0030] 11-mounting piece, 111-locking hole, 112-first adjustment hole, 113-mounting slot, 12-fixing piece, 121-fixing hole;

[0031] 20-adjusting member, 21-buffer member;

[0032] 30-locking piece;

[0033] 40 - bottom plate, 41 - top plate, 42 - third side plate, 43 - fourth side plate, 44 - first side plate, 441 - mounting port, 442 - fixing structure, 45 - layer plate, 46 - second side plate, 461 - second adjustment hole;

[0034] 50-accommodation space, 51-subspace, 52-installation space, 53-insulating film;

[0035] 200-battery cells;

[0036] X-first direction, Y-second direction, Z-third direction. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be an intermediate component.

[0039] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meanings as commonly understood by those skilled in the art to which this utility model belongs. The terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more of the relevant listed items.

[0040] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0041] Please refer to Figure 1, an embodiment of the present invention provides an electricity consumption system (not shown), including an electricity consumption device (not shown) and an energy storage device 1000 in an embodiment of the present invention, and the energy storage device 1000 is used to supply power to the electricity consumption device. The electricity consumption device can be a vehicle, a household appliance, a commercial appliance, an industrial appliance, etc., without limitation. The energy storage device 1000 in an embodiment of the present invention realizes the storage of electrical energy and supplies power to the electricity consumption device through the conversion between chemical energy and electrical energy. The energy storage device 1000 in an embodiment of the present invention can be a power battery, a household energy storage battery, a commercial energy storage battery, an industrial energy storage battery, etc., without limitation.

[0042] The power system realizes the storage and output of electric energy by adopting the power device and the energy storage device 1000 in the embodiment of the utility model. It compresses and fixes multiple battery cells 200 while absorbing the dimensional tolerances of the multiple battery cells 200, and accurately constrains the multiple battery cells 200 to the required size. The installation is simple and quick, and the manufacturing cost is low.

[0043] Please refer to Figure 1 The present invention also provides an energy storage device 1000, comprising at least one energy storage device, the energy storage device comprising a battery cell 200 and a housing 100 in the present invention. The battery cell 200 is disposed within the housing 100. Optionally, the battery cell 200 may be a lithium iron phosphate battery cell, a ternary NCM (Ni, Co, Mn) battery cell, a lithium manganate battery cell, a lithium titanate battery cell, etc., without limitation. Optionally, there are multiple battery cells 200, and the multiple battery cells 200 are arranged sequentially within the housing 100.

[0044] Optionally, the energy storage device 1000 further includes a control system (not shown), the battery cell 200 is electrically connected to the control system, and the control system is used to control the charging and discharging of the battery cell 200 and monitor the status information of the battery cell 200. Optionally, the control system sends the status information of the battery cell 200 to the management personnel so that the management personnel can manage the energy storage device 1000. Optionally, the energy storage device 1000 further includes a temperature system (not shown), which is used to control the operating temperature of the battery cell 200 to ensure that the battery cell 200 is not damaged due to overcooling or overheating. Optionally, the temperature system includes a sensor (not shown), a controller (not shown), a heater (not shown) and a refrigerator (not shown). Optionally, the housing 100 in the embodiment of the present invention is provided with a heat dissipation channel (not shown) so that the heat generated during the operation of the battery cell 200 can be transferred to the outside world.

[0045] The energy storage device 1000 adopts the battery cells 200 and the box body 100 in the embodiment of the utility model. The battery cells 200 are arranged in the box body 100, so that the box body 100 protects the battery cells 200 and prevents the battery cells 200 from being damaged by external factors. At the same time, the box body 100 compresses and fixes the multiple battery cells 200 while absorbing the dimensional tolerances of the multiple battery cells 200, accurately constraining the multiple battery cells 200 to the required size, making installation simple and quick, and having low manufacturing costs.

[0046] Please refer to Figure 2 In the embodiment of the present invention, there are multiple energy storage devices. Each box 100 is provided with at least one battery cell 200. The multiple energy storage devices are arranged along a first direction X. The multiple energy storage devices are electrically connected via plug-in terminals (not shown), or the multiple energy storage devices are electrically connected via wiring harnesses (not shown). Optionally, the multiple energy storage devices can be connected and fixed by welding, clamping, riveting, etc., without limitation, to prevent the box 100 from shifting or even falling. The first direction X can be horizontal, vertical, or any other feasible direction, without limitation.

[0047] By providing a plurality of energy storage devices in the embodiment of the present invention, each box 100 is provided with at least one battery cell 200, and the plurality of boxes 100 are arranged along the first direction X. The plurality of energy storage devices are electrically connected via plug-in terminals, or the plurality of energy storage devices are electrically connected via wiring harnesses. This greatly improves the power storage capacity of the energy storage device 1000, improves the output capacity and reliability of the energy storage device 1000, and facilitates expansion and management.

[0048] Please refer to Figure 2 When multiple energy storage devices are electrically connected through a wiring harness, a gripping member (not shown) is provided on the side of the box 100 of at least one energy storage device. The gripping member includes a gripping portion and a wiring harness arranging portion. The gripping portion is suitable for gripping to move the box 100, and the wiring harness arranging portion is suitable for limiting the wiring harness (not shown) connected between multiple energy storage devices. Optionally, the gripping portion may be a handle, or a groove for gripping, etc., without limitation. Optionally, there may be multiple gripping portions, and the multiple gripping portions are spaced apart on the box 100. Optionally, the wiring harness arranging portion may be a wire bundle tube, a winder, a hook, etc., without limitation.

[0049] Please refer to Figure 1 The battery cell 200 includes a soft-pack battery cell. Optionally, the battery cell 200 also includes a cylindrical battery cell, a sheet battery cell, a block battery cell, a strip battery cell, etc., without limitation.

[0050] By configuring the battery cells 200 as soft-pack battery cells, the gaps between the multiple battery cells 200 and the sizes of the battery cells 200 can be precisely constrained to the required sizes under the compression of the box 100 , thereby improving the power storage capacity of the energy storage device 1000 .

[0051] Please refer to Figure 1 The embodiment of the present invention further provides a box 100 , which includes a mounting member 11 , a fixing member 12 , an adjusting member 20 and a locking member 30 .

[0052] The mounting member 11 and the fixing member 12 are disposed opposite each other, forming a receiving space 50 therebetween. The receiving space 50 is configured to accommodate a plurality of sequentially arranged battery cells 200. The fixing member 12 is configured to abut against one end of the plurality of battery cells 200 in the arrangement direction. The mounting member 11 and the fixing member 12 can be any feasible structure, such as a plate or a beam, without limitation.

[0053] Optionally, the box body 100 further includes a bottom plate 40, a top plate 41, a third side plate 42, and a fourth side plate 43. The bottom plate 40 and the top plate 41 are arranged opposite each other, and the third side plate 42 and the fourth side plate 43 are arranged opposite each other. The mounting member 11, the fixing member 12, the bottom plate 40, the top plate 41, the third side plate 42, and the fourth side plate 43 collectively enclose a storage space 50. Optionally, the mounting member 11 is provided with a locking hole 111, which is used to connect the storage space 50 with the outside space.

[0054] Optionally, the direction from the mounting member 11 to the fixing member 12 is the first direction X, the direction from the fourth side panel 43 to the third side panel 42 is the second direction Y, and the direction from the bottom plate 40 to the top plate 41 is the third direction Z. Optionally, the locking hole 111 is opened along the first direction X. Optionally, the mounting member 11, the fixing member 12, the bottom plate 40, the top plate 41, the third side panel 42 and the fourth side panel 43 can be connected and fixed by threaded connection, clamping, welding and magnetic attraction, without limitation. Optionally, the cross-sectional shape of the box body 100 in the first direction X can be rectangular, circular, non-circular, etc., without limitation. Optionally, the box body 100 can be made of a material that meets the structural strength requirements, is corrosion-resistant and easy to process, specifically aluminum alloy, iron alloy and fiberglass, etc., without limitation.

[0055] The multiple battery cells 200 are sequentially arranged side by side in the accommodation space 50 along the first direction X, and the battery cells 200 abut against the fixing member 12, the third side plate 42, and the fourth side plate 43. Optionally, the battery cells 200 can also be arranged side by side along the second direction Y or the third direction Z, and the mounting member 11 is correspondingly arranged between the side plates in the second direction Y or the third direction Z and the multiple battery cells 200, without limitation.

[0056] The adjusting member 20 is arranged between the mounting member 11 and the fixing member 12, specifically between the side of the multiple battery cells 200 facing away from the fixing member 12 and the mounting member 11. One side of the adjusting member 20 is used to abut against the battery cells 200, and the other side facing the mounting member 11 is used to abut against the locking member 30. Optionally, a limiting portion (not shown) is provided on the side of the adjusting member 20 facing away from the multiple battery cells 200. The limiting portion is used to abut against the locking member 30. The limiting portion can be a groove that is recessed relative to the surface of the adjusting member 20, or a rubber structure or silicone structure with anti-slip properties, so that the adjusting member 20 will not be offset or damaged when it abuts against the locking member 30 and withstands the pressure of the locking member 30. Optionally, the material used for the adjusting member 20 is similar to the material used for the aforementioned box 100, which can be used for reference only and will not be repeated. Optionally, the adjusting member 20 can be any feasible structure such as a plate, a beam, etc., without limitation.

[0057] The locking member 30 is movably connected to the mounting member 11 . Specifically, the locking member 30 is passed through the locking hole 111 and is engaged with the locking hole 111 . The locking member 30 abuts against the adjusting member 20 so that the adjusting member 20 presses the multiple battery cells 200 .

[0058] For example, the locking member 30 and the locking hole 111 can be connected and fixed by a threaded connection. By providing matching threads (not shown) on the locking member 30 and the locking hole 111, the locking member 30 and the mounting member 11 are fixed in the axial and radial directions of the locking member 30, and different pressures can be applied to the adjusting member 20, so that the adjusting member 20 can more accurately restrain the battery cell 200 to the desired size. Optionally, the relative position of the locking member 30 and the mounting member 11 can be fixed by using a nut disposed between the mounting member 11 and the adjusting member 20.

[0059] Optionally, the locking member 30 and the locking hole 111 can also be connected and fixed by a snap-fit ​​connection. A plurality of grooves (not shown) are provided at intervals along the axial direction of the locking member 30. The plurality of grooves extend along the circumference of the locking member 30 and are connected end to end. After the adjusting member 20 is adjusted to the desired position using the locking member 30, a retaining member (not shown) such as a retaining spring, a retaining ring, and an insert is snap-fitted to the groove protruding from the surface of the mounting member 11 facing the battery cell 200, thereby securing the locking member 30 to the mounting member 11 in the axial direction. Optionally, the cross-sectional shape of the locking member 30 can be rectangular, circular, non-circular, etc., without limitation.

[0060] The box body 100 provided by the present invention is provided with a mounting part 11, a fixing part 12, an adjusting part 20, a locking part 30, a bottom plate 40, a top plate 41, a third side plate 42 and a fourth side plate 43. A plurality of battery cells 200 are arranged in a accommodating space 50 formed by the mounting part 11, the fixing part 12, the bottom plate 40, the top plate 41, the third side plate 42 and the fourth side plate 43 of the box body 100. The adjusting part 20 is arranged between the side of the plurality of battery cells 200 facing away from the fixing part 12 and the mounting part 11. A locking hole 111 is opened on the mounting part 11. The locking part 30 is matched with the locking hole 111 and abuts against the adjusting part 20, so that the adjusting part 20 presses the plurality of battery cells 200, so that while pressing and fixing the plurality of battery cells 200, the dimensional tolerance of the plurality of battery cells 200 is absorbed, and the plurality of battery cells 200 are accurately constrained to the required size. The installation is simple and quick, and the manufacturing cost is low.

[0061] Please refer to Figure 3 There are multiple locking holes 111 evenly distributed on the mounting member 11. Correspondingly, there are multiple locking members 30 that are mated and connected to the multiple locking holes 111 in a one-to-one correspondence. Optionally, the multiple locking holes 111 are evenly distributed along the circumferential edge of the mounting member 11. Exemplarily, there are four locking holes 111, evenly distributed at the four corners of the mounting member 11. There are also four locking members 30 that pass through the locking holes 111 in a one-to-one correspondence and abut against the adjusting member 20.

[0062] By providing a plurality of locking holes 111 and locking members 30, the plurality of locking holes 111 are evenly distributed on the mounting member 11, and the plurality of locking members 30 pass through the plurality of locking holes 111 one by one and abut against the adjusting member 20, so that different contact positions of the adjusting member 20 with the battery cell 200 can be adjusted separately to absorb the larger tolerance caused by the uneven surface of the plurality of battery cells 200, so that the plurality of battery cells 200 can be better fitted with each other, and the plurality of battery cells 200 can be precisely constrained to the required size, the installation is simple and quick, and the manufacturing cost is low.

[0063] Please refer to Figure 1 and Figure 3The mounting member 11 is also provided with a first adjustment hole 112, which is used for a pre-tightening member (not shown) to pass through so that the pre-tightening member applies a pre-tightening force to the adjusting member 20. After the battery cell 200 is installed, the pre-tightening member passes through the first adjustment hole 112 along the first direction X and abuts against the adjusting member 20 and squeezes the adjusting member 20 to a preset position. The locking member 30 is then passed through the locking hole 111 and abuts against the adjusting member 20 to accurately adjust the position of the adjusting member 20. Finally, the pre-tightening member is removed to complete the compression and fixation of the multiple battery cells 200. Optionally, the pre-tightening member can be any feasible structure such as a bare rod or a screw rod without limitation. Optionally, the first adjustment hole 112 can be circular, rectangular, non-circular, etc. without limitation. Optionally, the adjacent hole walls of the first adjustment hole 112 are smoothly connected. Correspondingly, a chamfer can be provided between the two adjacent surfaces of the pre-tightening member to reduce the quenching stress and prevent the sharp part of the pre-tightening member from scratching the adjusting member 20.

[0064] By opening a first adjustment hole 112 on the mounting member 11, before installing the locking member 30, the pre-tightening member passes through the first adjustment hole 112 and abuts against the adjusting member 20. The pre-tightening member applies a pre-tightening force to the adjusting member 20 so that the adjusting member 20 presses the multiple battery cells 200 to a preset position, so that when the locking member 30 is installed, the locking member 30 does not need to overcome the resistance force generated by the compression of the multiple battery cells 200, thereby reducing the risk of deformation and damage of the locking member 30, improving the accuracy of the locking member 30 in fixing the adjusting member 20, and shortening the assembly time of the locking member 30.

[0065] Please refer to Figure 1 and Figure 3 There are multiple first adjustment holes 112, which are spaced apart on the mounting member 11 and can be evenly distributed. Correspondingly, there are multiple pre-tightening members, which pass through the multiple first adjustment holes 112 and abut different positions of the adjustment member 20. Optionally, the multiple first adjustment holes 112 can have the same structure or different structures, without limitation.

[0066] By providing a plurality of first adjustment holes 112 and pre-tightening members, the plurality of first adjustment holes 112 are spaced apart on the mounting member 11, and the plurality of pre-tightening members pass through the plurality of first adjustment holes 112 one by one and abut against the adjusting member 20, so that the different pre-tightening forces applied by the plurality of pre-tightening members to different positions of the adjusting member 20 can be adjusted separately, so that the adjusting member 20 is closer to the desired position when in the preset position, thereby shortening the assembly time of the locking member 30.

[0067] Please refer to Figure 1 and Figure 2 The box body 100 further includes a first side plate 44 , which is disposed on a side of the aforementioned fixing member 12 facing away from the plurality of battery cells 200 , and the third side plate 42 and the fourth side plate 43 are both connected and fixed to the first side plate 44 .

[0068] Optionally, the third side panel 42, the fourth side panel 43, the fixing member 12, the mounting member 11, and the first side panel 44 may be detachably connected or may be an integral structure, without limitation. Optionally, the first side panel 44 may be provided with a mounting opening 441 for mounting the aforementioned gripping member to facilitate movement of the energy storage device 1000. Optionally, multiple mounting openings 441 may be evenly distributed on the first side panel 44.

[0069] Optionally, the first side panel 44 and the bottom panel 40 are provided with a plurality of spaced apart fixing structures 442, the mounting member 11 and the fixing member 12 are provided with a plurality of spaced apart fixing holes 121, and the third side panel 42 is provided with a plurality of mounting holes (not shown) corresponding one-to-one to the plurality of fixing structures 442 and the plurality of fixing holes 121. The plurality of mounting holes are fixed to the plurality of fixing structures 442 and the plurality of fixing holes 121 via threaded connections to enclose the accommodating space 50. Optionally, the connection method between the bottom panel 40, the top panel 41, the fourth side panel 43 and the fixing member 12, the mounting member 11 and the first side panel 44 is similar to the connection method between the third side panel 42 and the fixing member 12, and the first side panel 44 and the bottom panel 40, which can be used for reference only and will not be described in detail.

[0070] By setting the bottom plate 40, the top plate 41, the third side plate 42 and the fourth side plate 43 to be connected to the fixing member 12, the installation member 11 and the first side plate 44, after the adjusting member 20 presses the multiple battery cells 200, the multiple battery cells 200 are in contact with the fixing member 12, the bottom plate 40, the third side plate 42 and the fourth side plate 43, so that the multiple battery cells 200 can be fixed in the box body 100, and when the multiple battery cells 200 are pressed, they will not be separated from the box body 100 due to forces in other directions, so that the multiple battery cells 200 can be accurately constrained to the required size, which simplifies the installation process and reduces the safety risks of the installation process.

[0071] Please refer to Figure 1 and Figure 2 The box body 100 also includes at least one layer plate 45, which is arranged between the bottom plate 40 and the top plate 41. The two ends of the layer plate 45 are respectively connected to the fixing member 12 and the installation member 11. At least one layer plate 45 divides the accommodating space 50 into multiple sub-spaces 51. There are multiple adjusting members 20, and the multiple adjusting members 20 are arranged in the multiple sub-spaces 51 in a one-to-one correspondence.

[0072] Optionally, the layer plate 45 abuts against both the third side plate 42 and the fourth side plate 43. Optionally, the layer plate 45 and the fixing member 12 can be connected and fixed by means of snap connection, thread connection and welding, without limitation. Optionally, the mounting member 11 is provided with a mounting groove 113, the mounting groove 113 is used to cooperate with the layer plate 45 for connection, and the layer plate 45 extends into the accommodating space 50 through the mounting groove 113 and is connected to the fixing member 12. Optionally, the layer plate 45 and the fixing member 12 can be connected and fixed by means of welding, snap connection and thread connection, without limitation. Optionally, multiple mounting members 11 are arranged in a one-to-one correspondence in multiple subspaces 51.

[0073] By setting a layer plate 45, the layer plate 45 is set between the bottom plate 40 and the top plate 41, and the two ends of the layer plate 45 are respectively connected to the fixing part 12 and the installation part 11. At least one layer plate 45 divides the accommodating space 50 into multiple sub-spaces 51, so that multiple battery cells 200 can be set in a single or multiple sub-spaces 51 to meet the energy storage requirements. At the same time, arranging multiple battery cells 200 in layers can reduce the relative size of the battery cells 200 and thus reduce the adverse effects of dimensional tolerances, which is conducive to compacting and fixing the multiple battery cells 200 to the required size.

[0074] Please refer to Figure 2 The surface of the adjusting member 20 facing the fixing member 12 is provided with a buffer member 21, and the adjusting member 20 abuts against the multiple battery cells 200 through the buffer member 21. Optionally, the buffer member 21 on a single adjusting member 20 can be a single buffer member 21 that completely covers the surface of the adjusting member 20 facing the fixing member 12, or multiple buffer members 21 can be evenly arranged on the surface of the adjusting member 20 facing the fixing member 12, without limitation. Optionally, the buffer member 21 can be made of foam, rubber, silicone, etc., without limitation.

[0075] By providing a buffer member 21 on the surface of the adjusting member 20 facing the fixing member 12, the adjusting member 20 abuts against the multiple battery cells 200 through the buffer member 21, so that the buffer member 21 can absorb the dimensional tolerance of the multiple battery cells 200, so that the adjusting member 20 and the buffer member 21 can accurately restrain the multiple battery cells 200 to the required size, and the buffer member 21 has a low hardness and can prevent the battery cells 200 from being damaged by vibration, impact and hard objects, thereby improving the safety of the energy storage device 1000.

[0076] Please refer to Figure 1 and Figure 2 The inner wall of the accommodation space 50 is provided with an insulating film 53, which covers the fixing member 12, the third side plate 42, the fourth side plate 43, the bottom plate 40, the top plate 41, and the layer plate 45. Optionally, the insulating film 53 is made of a material with high resistivity and strong breakdown field, specifically silicon oxide, silicon nitride, aluminum oxide, polyimide, polyethylene, etc., without limitation.

[0077] Please refer to Figure 1 and Figure 2A second side plate 46 is further provided on the side of the mounting member 11 facing away from the fixing member 12. The second side plate 46 is provided with a second adjustment hole 461. The second adjustment hole 461 is arranged corresponding to the first adjustment hole 112. The second side plate 46, the bottom plate 40, the top plate 41, the third side plate 42, the fourth side plate 43 and the mounting member 11 are enclosed to form an installation space 52. The installation space 52 is connected to the accommodating space 50. The installation space 52 is used to install the aforementioned preload member and the locking member 30.

[0078] Optionally, the connection method between the second side panel 46 and the bottom panel 40, the top panel 41, the third side panel 42 and the fourth side panel 43 is similar to the connection method between the third side panel 42 and the first side panel 44 and the bottom panel 40, which can be referred to and will not be repeated.

[0079] In one embodiment, the first side panel 44, the third side panel 42, the fourth side panel 43, the bottom panel 40, the top panel 41, the fixing member 12, the mounting member 11, the adjusting member 20 and the layer panel 45 are all connected to form an installation space 52 with an opening toward the second side panel 46. The pre-tightening member extends into the first adjustment hole 112 from the opening and pushes the adjusting member 20 to a preset position. The locking member 30 is then installed and the pre-tightening member is removed. Finally, the second side panel 46 is installed to close the installation space 52.

[0080] In another embodiment, the openings of the accommodating space 50 and the installation space 52 both face the third side panel 42. The preload member extends from the openings into the second adjustment hole 461 and the first adjustment hole 112, respectively, and pushes the adjustment member 20 to a preset position. The locking member 30 is then installed, the preload member is removed, and finally, the third side panel 42 is installed to seal the accommodating space 50 and the installation space 52. Optionally, the openings of the accommodating space 50 and the installation space 52 may also face the fourth side panel 43, the top panel 41, the bottom panel 40, etc., without limitation.

[0081] By providing a second side plate 46, the second side plate 46 is provided on the side of the mounting member 11 facing away from the fixing member 12 and is enclosed with the bottom plate 40, the top plate 41, the third side plate 42, the fourth side plate 43 and the mounting member 11 to form an installation space 52, so that the pre-tightening member and the locking member 30 can be installed in the installation space 52, which simplifies the installation process of the pre-tightening member and the locking member 30 and shortens the installation time. In addition, the connection between the installation space 52 and the accommodating space 50 can improve the heat dissipation performance of the energy storage device 1000.

[0082] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" is based on the orientation or positional relationship described in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0083] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A box, characterized in that: include: Fixings; A mounting member, arranged opposite to the fixing member, the fixing member and the mounting member are adapted to form a receiving space, the receiving space is used to accommodate a plurality of sequentially arranged battery cells, and the fixing member is used to abut against one end of the plurality of battery cells in the arrangement direction; An adjusting member, accommodated in the accommodation space, and configured to abut against the other end of the plurality of battery cells in the arrangement direction; A locking member is movably connected to the mounting member, and the locking member abuts against the adjusting member so that the adjusting member presses the plurality of battery cells.

2. The box according to claim 1, characterized in that: The adjusting member is arranged between the mounting member and the fixing member, the plurality of battery cells are used to abut against the fixing member and the adjusting member, the mounting member is provided with a locking hole, and the locking member is matched and connected with the locking hole.

3. The box according to claim 2, characterized in that: There are a plurality of locking holes, and the plurality of locking holes are arranged at intervals on the mounting member.

4. The box according to any one of claims 1 to 3, characterized in that: The mounting member is further provided with a first adjustment hole, and the first adjustment hole is used for a pre-tightening member to pass through so that the pre-tightening member applies a pre-tightening force to the adjusting member.

5. The box according to claim 4, characterized in that: There are a plurality of the first adjustment holes, and the plurality of the first adjustment holes are arranged at intervals on the mounting member.

6. The box according to any one of claims 1 to 3, characterized in that: The box also includes: a bottom plate and a top plate, the bottom plate and the top plate being arranged opposite to each other; and a third side plate and a fourth side plate, the third side plate and the fourth side plate are arranged opposite to each other, the third side plate and the fourth side plate are both connected to the fixing member and the mounting member, and the bottom plate, the top plate, the fixing member, the mounting member, the third side plate and the fourth side plate form the accommodation space; After the adjusting member presses the plurality of battery cells, the plurality of battery cells abut against the fixing member, the bottom plate, the third side plate and the fourth side plate.

7. The box according to claim 6, characterized in that: The box also includes: At least one layer plate is arranged between the bottom plate and the top plate, and two ends of the layer plate are respectively connected to the fixing member and the mounting member, at least one layer plate divides the accommodating space into a plurality of sub-spaces, and there are a plurality of adjusting members, and at least one adjusting member is arranged in each of the sub-spaces.

8. The box according to any one of claims 2 to 7, characterized in that: A buffer is provided on the surface of the adjusting member facing the fixing member.

9. The box according to any one of claims 2 to 7, characterized in that: An insulating film is attached to the inner wall of the accommodation space.

10. The box according to any one of claims 4 to 5, characterized in that: A second side plate is further provided on a side of the mounting member facing away from the fixing member. A second adjustment hole is opened on the second side plate. The second adjustment hole is arranged corresponding to the first adjustment hole.

11. An energy storage device, characterized in that: The invention comprises at least one energy storage device, wherein the energy storage device comprises a battery cell and a box body as claimed in any one of claims 1 to 10, wherein the battery cell is arranged in the box body.

12. The energy storage device according to claim 11, characterized in that: There are multiple energy storage devices, each of which is provided with at least one battery cell, and the multiple energy storage devices are arranged along a first direction. The multiple energy storage devices are electrically connected through plug-in terminals, or the multiple energy storage devices are electrically connected through wiring harnesses.

13. The energy storage device according to claim 12, characterized in that: The plurality of energy storage devices are electrically connected through a wiring harness, and a gripping member is provided on the side of a box of at least one of the energy storage devices, and the gripping member comprises: a gripping portion adapted to grip to move the box; and A wire harness arranging portion, wherein the wire harness arranging portion is suitable for limiting the position of the wire harnesses connected between the plurality of energy storage devices.

14. The energy storage device according to claim 11, characterized in that: The battery cell comprises a soft-pack battery cell.

15. An electricity system, characterized in that: It comprises an electric device and an energy storage device as claimed in any one of claims 11 to 14, wherein the energy storage device supplies power to the electric device.

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