Battery pack and electric equipment

Abstract

The invention discloses a battery pack and electric equipment, and the battery pack comprises a tray which is provided with a structural beam; the battery cell group is arranged in the tray and comprises at least two battery cells, and every two adjacent battery cells are located on the two sides of the structural beam in the first direction respectively; the insulating part is arranged on one side, in the second direction, of the structural beam and is provided with a glue injection space, at least one side, in the first direction, of the insulating part is provided with an opening, so that glue in the glue injection space flows into the space between the structural beam and the battery cell on the corresponding side, and the first direction is perpendicular to the second direction. Therefore, the insulating part can play a role in guiding the adhesive, so that the adhesive can more stably and smoothly flow in the adhesive injection space and between the structural beam and the end face of the battery cell on the corresponding side, and the bonding area between the battery cell and the insulating part and the bonding area between the battery cell and the structural beam are ensured, so that the structural reliability of the battery pack can be improved.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Art

[0002] With the development of electric vehicles, as one of the core of electric vehicles, the power battery system is facing increasingly higher challenges in safety and reliability. Generally speaking, the battery pack equipped on electric vehicles is assembled into modules from battery packs, and then the modules are installed in the battery pack, forming a three-level assembly mode of battery pack-module-battery pack. The battery-battery pack assembly form is to directly integrate the battery into the battery pack, thereby eliminating the intermediate module structure, simplifying the structure of the battery pack, and improving space utilization.

[0003] In the related art, a battery pack is provided with a tray. For the battery-battery pack assembly form, although the space utilization of the battery pack can be improved, multiple batteries are directly arranged in the tray, the stability of the arrangement of the batteries in the tray is low, and the overall structural strength and reliability of the battery pack are low. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a battery pack whose structure is more stable and reliable.

[0005] The present invention further provides an electrical device.

[0006] A battery pack according to an embodiment of the present invention includes: a tray, which is provided with a structural beam; a battery cell group, which is arranged in the tray and includes at least two battery cells, and two adjacent battery cells are respectively located on both sides of the first direction of the structural beam; an insulating member, which is arranged on one side of the structural beam along the second direction and is provided with a glue injection space, and the insulating member is provided with an open mouth on at least one side along the first direction to allow the glue in the glue injection space to flow between the structural beam and the battery cell on the corresponding side, wherein the first direction and the second direction are perpendicular to each other.

[0007] Therefore, by setting a glue injection space on the insulating part and setting an open mouth on at least one side of the first direction of the insulating part, after the battery cell group is set on both sides of the first direction of the structural beam, it is only necessary to inject glue into the glue injection space. The insulating part can play a role in guiding the glue, so that the glue can flow more stably and smoothly in the glue injection space, and between the structural beam and the battery cell end face on the corresponding side, thereby ensuring the bonding area between the battery cell and the insulating part and the structural beam respectively, thereby improving the structural reliability of the battery pack.

[0008] In some examples of the present invention, the insulating member has a bottom wall adjacent to the structural beam along the second direction, and a glue overflow channel is provided on a surface of the bottom wall facing the glue injection space, and the glue overflow channel is connected to the open port.

[0009] In some examples of the present invention, the insulating member is provided with open openings on both sides along the first direction, and the overflow glue channel is connected to the two open openings.

[0010] In some examples of the present invention, the overflow glue flow channel includes a plurality of sub-overflow glue flow channels, and the plurality of sub-overflow glue flow channels are arranged at intervals.

[0011] In some examples of the present invention, the sub-overflow glue flow channels are all arc-shaped and are arranged at intervals in the radial direction.

[0012] In some examples of the present invention, the insulating member is provided with a plurality of limit plates spaced apart along a third direction, the limit plates are provided on the bottom wall, and the glue injection space is formed between two adjacent limit plates and the bottom wall, one end of the overflow glue channel opens toward the limit plates, and the other end opens toward the open opening, and the third direction is the extension direction of the structural beam.

[0013] In some examples of the present invention, a first clamping portion is provided on the structural beam, and a second clamping portion is provided on the insulating member, and the first clamping portion and the second clamping portion are clamped together.

[0014] In some examples of the present invention, the battery cell group includes a plurality of the battery cells, and the plurality of battery cells are located on one side of the structural beam along the first direction, and are arranged in sequence in the third direction and electrically connected to each other.

[0015] In some examples of the present invention, a connection row is electrically connected between two adjacent battery cells along the first direction and / or along the third direction, and the connection row includes a first connection portion and a second connection portion, the first connection portion is electrically connected to the pole of one of the two adjacent battery cells, and the second connection portion is electrically connected to the pole of the other of the two adjacent battery cells.

[0016] In some examples of the present invention, the first connection portion is provided with a first fixing member, and the first fixing member is connected and fixed to the second connection portion to lock the first connection portion and the second connection portion; and / or, the second connection portion is provided with a second fixing member, and the second fixing member is connected and fixed to the first connection portion to lock the first connection portion and the second connection portion.

[0017] In some examples of the present invention, the first connecting portion has a plurality of the first fixing members arranged at intervals, a first notch is provided between two adjacent first fixing members, and the second fixing member is fixed to the first notch to lock the first connecting portion and the second connecting portion; and / or, the second connecting portion has a plurality of the second fixing members arranged at intervals, a second notch is provided between two adjacent second fixing members, and the first fixing member is fixed to the second notch to lock the first connecting portion and the second connecting portion.

[0018] In some examples of the present invention, a surface of the first connection portion along the thickness direction thereof contacts a surface of the second connection portion along the thickness direction thereof.

[0019] In some examples of the present invention, one end of the first connection portion and one end of the second connection portion are bendably connected to each other.

[0020] In some examples of the present invention, along the first direction, the connection row between two adjacent battery cells is located in the glue injection space.

[0021] In some examples of the present invention, the battery cell group has an explosion-proof valve, the tray is provided with an explosion-proof ventilation valve, and the explosion-proof valve is suitable for being connected to the explosion-proof ventilation valve.

[0022] In some examples of the present invention, a flow guide cover is provided in the tray, and the flow guide cover is respectively connected to the explosion-proof valve and the explosion-proof ventilation valve.

[0023] In some examples of the present invention, the battery pack further includes a collection module, the collection module includes a collection circuit board and a sampling component, one end of the sampling component is electrically connected to the collection circuit board, and the other end is electrically connected to the battery cell group.

[0024] In some examples of the present invention, the sampling component includes a plurality of sub-sampling components, and the plurality of sub-sampling components are stacked.

[0025] In some examples of the present invention, a distribution box is provided in the tray, the distribution box is located at one end of the plurality of battery cell groups in the third direction, the distribution box has a circuit board accommodating space, and the acquisition circuit board is arranged in the circuit board accommodating space.

[0026] In some examples of the present invention, a limiting groove is provided on at least one side of the circuit board accommodating space along the second direction, and one end of the acquisition circuit board along the second direction is limitedly engaged with the limiting groove.

[0027] In some examples of the present invention, the battery pack also includes a limit block, and the distribution box has a first surface and a second surface on both sides along the second direction, wherein the first surface is recessed toward the second surface to form the circuit board accommodating space, and the circuit board accommodating space is provided with an opening on the side facing the first surface, the limit block is arranged at the opening, and the limit groove is provided on the limit block.

[0028] In some examples of the present invention, the battery pack further includes an upper cover plate, the tray and the upper cover plate together enclose a battery cell accommodating space, the battery cell group is disposed in the battery cell accommodating space, and an adhesive layer is disposed between the battery cell group and the tray and / or the upper cover plate.

[0029] An electric device according to an embodiment of the present invention includes: the battery pack described above.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of a battery pack according to another perspective of an embodiment of the present invention;

[0034] Figure 3 is an exploded view of a battery pack according to an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of a tray according to an embodiment of the present invention;

[0036] Figure 5 is a schematic diagram of a battery cell group according to an embodiment of the present invention;

[0037] Figure 6 yes Figure 5 Schematic diagram of area A in the middle;

[0038] Figure 7 is a schematic diagram of a connection bar according to an embodiment of the present invention;

[0039] Figure 8 is a partial exploded view of a battery pack according to an embodiment of the present invention;

[0040] Fig. 9 is a partial schematic diagram of a battery pack according to an embodiment of the present invention;

[0041] Fig.10 is a partial schematic diagram of a battery pack according to an embodiment of the present invention;

[0042] Fig.11 is a schematic diagram of a collection module and a distribution box according to an embodiment of the present invention;

[0043] Fig.12 is a partial schematic diagram of a collection module and a distribution box according to an embodiment of the present invention;

[0044] Fig.13 is a schematic diagram of a collection module according to an embodiment of the present invention;

[0045] Fig.14 4 is a partial schematic diagram of a sampling member according to an embodiment of the present invention.

[0046] Reference numerals:

[0047] 100. Battery pack;

[0048] 10. tray; 11. structural beam; 111. first clamping portion; 12. explosion-proof vent valve; 13. side beam; 131. exhaust hole; 14. battery cell accommodating space;

[0049] 20. Cell group; 21. Cell; 211. Explosion-proof valve; 212. Pole; 22. Connecting bar; 221. First connecting part; 2211. First fixing member; 2212. First welding surface; 2213. First notch; 222. Second connecting part; 2221. Second fixing member; 2222. Second welding surface; 2223. Second notch; 23. Bus bar;

[0050] 30. Insulating member; 31. Glue injection space; 311. Open opening; 312. Position limiting plate; 313. Bottom wall; 32. Glue overflow channel; 321. Sub-glue overflow channel; 33. Second clamping portion;

[0051] 40. Fairing cover;

[0052] 50, acquisition module; 51, acquisition circuit board; 52, sampling component; 521, sub-sampling component; 5211, notch; 5212, sampling point;

[0053] 60. distribution box; 61. circuit board accommodating space; 62. limit groove; 63. limit block; 64. elastic buffer; 65. first surface; 66. second surface; 67. opening;

[0054] 70. Upper cover plate; 71. Cold plate; 72. Thermal insulation cotton; 73. Bottom guard plate. DETAILED DESCRIPTION

[0055] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0056] Reference below Figure 1-Figure 14 A battery pack 100 according to an embodiment of the present invention is described. The battery pack 100 may be applied to an electric device, including but not limited to a vehicle.

[0057] Please refer to Figure 1-Figure 10 As shown, in the embodiment of the present application, from the perspective of the battery pack 100, the first direction is one of the length direction and the width direction of the battery pack 100, the third direction is the other of the length direction and the width direction of the battery pack 100, and the second direction is the thickness direction or the height direction of the battery pack 100. From the perspective of the structural beam 11, the first direction is one of the length direction and the width direction of the structural beam 11, the third direction is the other of the length direction and the width direction of the structural beam 11, and the second direction is the thickness direction or the height direction of the structural beam 11. In the battery pack 100, the first direction, the second direction, and the third direction of the structural beam 11 are consistent with those of the battery pack 100.

[0058] Combination Figure 1-Figure 10 As shown, the battery pack 100 according to the present invention may mainly include: a tray 10, a battery cell group 20 and an insulating member 30, wherein a structural beam 11 is provided on the bottom wall of the tray 10, the battery cell group 20 is arranged in the tray 10, the battery cell group 20 may include at least two battery cells 21, two adjacent battery cells 21 are respectively located on both sides of the first direction of the structural beam 11, the insulating member 30 is arranged on one side of the second direction of the structural beam 11, the insulating member 30 is provided with a glue injection space 31, and the insulating member 30 is provided with an open port 311 along at least one side of the first direction so that the glue in the glue injection space 31 flows into between the structural beam 11 and the battery cell 21 on the corresponding side, wherein the first direction and the second direction are perpendicular to each other.

[0059] Specifically, by arranging the cell group 20 in the tray 10, and making the cell group 20 include at least two cells 21, and at least two cells 21 are electrically connected, a battery pack 100 can be formed by directly arranging multiple cell groups 20 in the tray 10, without modularizing and partitioning the multiple cells 21 first, thereby improving the compactness of the battery pack 100, improving the volume utilization of the battery pack 100, and reducing the number of parts. Among them, the cell 21 can be a short-blade cell, and at least two cells 21 can be electrically connected to form a long-blade battery.

[0060] Furthermore, by setting a structural beam 11 at the bottom of the tray 10, the overall structural strength of the tray 10 can be improved. By setting the insulating member 30 on one side of the structural beam 11 in the second direction, setting a glue injection space 31 in the insulating member 30, and setting an open opening 311 on at least one side of the insulating member 30 in the first direction, and locating two adjacent battery cells 21 on both sides of the first direction of the structural beam 11, the open opening 311 can avoid the battery cells 21 on both sides of the first direction of the structural beam 11, and the battery cells 21 of the two adjacent battery cells 21 can be arranged. The connection is arranged in the glue injection space 31. On the one hand, the insulating part 30 can insulate the electrical connection between two adjacent battery cells 21 to prevent short circuits between the electrical connections of multiple battery cell groups 20 arranged in a third direction. On the other hand, glue can be injected into the glue injection space 31. The insulating part 30 can guide the glue so that the electrical connection between two adjacent battery cells 21 is bonded and connected to the insulating part 30, so that the electrical connection between two adjacent battery cells 21 can be stably set at the insulating part 30, thereby improving the structural reliability of the battery pack 100.

[0061] Furthermore, considering that at least one side of the first direction of the insulating member 30 is provided with an open opening 311, that is, at least one side of the first direction of the glue injection space 31 is open toward the battery cell 21 on the corresponding side, when glue is injected into the glue injection space 31 to ensure the stable arrangement of the battery cell group 20 in the insulating member 30, the glue can flow more stably and smoothly along the open opening 311 to between the structural beam 11 and the end face of the battery cell 21 on the corresponding side under the drainage effect of the insulating member 30, thereby ensuring the bonding area between the structural beam 11 and the end face of the battery cell 21 on at least one side, and the structural beam 11 and the battery cell 21 on at least one side can be bonded, so that the battery cell group 20 and the tray 10 can be bonded into an integral structure, which can strengthen the strength of the middle position of the battery pack 100, reduce deformation in the middle, further improve the structural strength of the battery pack 100, and improve the structural reliability of the battery pack 100.

[0062] Among them, in order to adapt to the multiple battery cell groups 20 in the battery pack 100, a plurality of glue injection spaces 31 can be correspondingly set on the insulating part 30, and then an open mouth 311 is set on one side of the first direction of each glue injection space 31, and the two adjacent open mouths 311 are respectively facing the two sides of the first direction. In this way, it can be ensured that the structural beam 11 is bonded to the battery cells 21 on the corresponding side, and the distribution of the bonding force between the multiple battery cell groups 20 and the structural beam 11 in the first direction is more uniform, thereby improving the structural reliability of the battery pack 100.

[0063] Of course, open openings 311 may also be provided on both sides of the first direction of the injection space, which can not only increase the speed of injection but also allow the structural beam 11 to be bonded to the battery cells 21 on both sides of the first direction, thereby further improving the connection strength between the battery cell group 20 and the structural beam 11 and further improving the structural reliability of the battery pack 100.

[0064] Therefore, by setting a glue injection space 31 on the insulating part 30, and setting open openings 311 on both sides of the first direction of the insulating part 30, after the battery cell group 20 is set on both sides of the first direction of the structural beam 11, the electrical connection inside the battery cell group 20 can be located in the glue injection space 31, and it is only necessary to inject glue into the glue injection space 31. The insulating part 30 can play a role in guiding the glue, so that the glue can flow more stably and smoothly in the glue injection space 31, and between the structural beam 11 and the end face of the battery cell 21 on the corresponding side, thereby ensuring the bonding area of ​​the battery cell 21 with the insulating part 30 and the structural beam 11 respectively, thereby improving the structural reliability of the battery pack 100.

[0065] Combination Figure 8-Figure 10 As shown, the insulating member 30 has a bottom wall 313 adjacent to the structural beam 11 along the second direction, and a glue overflow channel 32 is provided on a surface of the bottom wall 313 facing the glue injection space 31 , and the glue overflow channel 32 is connected to the open opening 311 .

[0066] Specifically, an overflow glue channel 32 is provided on the side surface of the bottom wall 313 facing the glue injection space 31, and the overflow glue channel 32 is connected to the open port 311. In this way, glue is injected into the glue injection space 31. After the glue flows to the bottom wall 313 under the action of gravity, it can further flow into the overflow glue channel 32. The overflow glue channel 32 can limit the flow path of the glue, guide the glue to the open port 311 more quickly and reliably, and further guide the glue between the structural beam 11 and the battery cell 21 on the corresponding side, thereby enhancing the drainage effect of the insulating part 30 on the glue.

[0067] Combination Figure 8-Figure 10 As shown, the insulating member 30 is provided with open openings 311 on both sides along the first direction, and the overflow glue channel 32 is connected with the two open openings 311. With such a configuration, after injecting glue into the glue injection space 31, the glue can flow to the two open openings 311 respectively under the guiding effect of the overflow glue channel 32, and further flow to between the structural beam 11 and the end faces of the battery cells 21 on both sides, which can not only further increase the flow rate of the glue, but also ensure the uniform distribution of the glue amount on both sides of the first direction, so that the glue can bond the structural beam 11 to the battery cells 21 on both sides of the first direction, thereby further ensuring the connection strength between the structural beam 11 and the battery cells 21 on both sides, and improving the structural reliability of the battery pack 100.

[0068] Combination Fig.10 As shown, the overflow glue channel 32 may include a plurality of sub-overflow glue channels 321, and the plurality of sub-overflow glue channels 321 are arranged at intervals. Specifically, by setting a plurality of sub-overflow glue channels 321 arranged at intervals, when the adhesive flows to the bottom wall 313 of the adhesive injection space 31, it can first flow into the plurality of sub-overflow glue channels 321, and then flow out from the open openings 311 on both sides under the action of the diversion and diversion of the plurality of sub-overflow glue channels 321, and further flow to between the structural beam 11 and the battery cell 21 on the corresponding side, thereby improving the guiding effect of the overflow glue channel 32 on the adhesive, making the adhesive more evenly distributed between the structural beam 11 and the battery cell 21 on the corresponding side, ensuring the uniform amount of adhesive between the structural beam 11 and the battery cell 21 on the corresponding side, ensuring the bonding area, and further improving the structural reliability of the battery pack 100.

[0069] Furthermore, combined with Figure 8-Figure 10 As shown, the sub-overflow glue flow channels 321 are all arc-shaped, and a plurality of sub-overflow glue flow channels 321 are arranged at intervals in the radial direction.

[0070] Specifically, by making the sub-overflow glue flow channel 321 arc-shaped, the sub-overflow glue flow channel 321 can guide the glue from the gathering point to a farther distance, thereby increasing the guiding area of ​​the overflow glue flow channel 32, and allowing the glue to flow evenly into the gap between the structural beam 11 and the battery cell 21 on the corresponding side, making the amount of glue between the structural beam 11 and the battery cell 21 uniform, and making the distribution of the adhesive force between the structural beam 11 and the battery cell 21 more uniform and reliable, which can further improve the reliability of the battery pack 100.

[0071] It should be noted that the sub-overflow glue channel 321 can also be straight or wavy, so as to increase the flow rate of the glue or make the glue flow to a farther position. There is no specific limitation here, and in actual production, it can be selected according to the application scenario.

[0072] In a specific embodiment of the present invention, Fig.10 As shown, the glue overflow channel 32 may include four sub-glue overflow channels 321, and the four sub-glue overflow channels 321 are all arc-shaped. The four sub-glue overflow channels 321 are concentrically arranged and radially spaced apart, and the widths of the four sub-glue overflow channels 321 are the same. In this way, according to the size of the bottom wall 313 in the third direction, the number and width of the sub-glue overflow channels 321 can be set more reasonably, which can not only protect the glue from flowing evenly between the structural beam 11 and the battery cells 21 on the corresponding side under the guiding effect of the four sub-glue overflow channels 321, but also ensure the flow rate of the glue in the four sub-glue overflow channels 321, avoid the glue flow rate being too small, resulting in only a small amount of glue before solidification or even no glue reaching between the structural beam 11 and the battery cells 21 on the corresponding side, so as to ensure that the glue amount between the structural beam 11 and the battery cells 21 on the corresponding side meets the bonding requirements, thereby ensuring the structural reliability of the battery pack 100.

[0073] Combination Figure 2 As shown, the insulating member 30 is provided with a plurality of limit plates 312 spaced apart along a third direction, the limit plates 312 are arranged on the bottom wall 313, and a glue injection space 31 is formed between two adjacent limit plates 312 and the bottom wall 313, one end opening 67 of the overflow glue channel 32 faces the limit plate 312, and the other end opening 67 faces the open port 311, wherein the third direction is the extension direction of the structural beam 11.

[0074] Specifically, the extension direction of the structural beam 11 is defined as the third direction, and a plurality of limit plates 312 are arranged on the insulating member 30 at intervals in the third direction, and the limit plates 312 are arranged on the bottom wall 313, so that a glue injection space 31 can be formed between two adjacent limit plates 312 and the bottom wall 313. Therefore, after the electrical connection inside the battery cell group 20 is arranged in the glue injection space 31, the two sides of the electrical connection in the third direction are spaced apart from the limit plates 312. The limit plates 312 can not only limit the battery cell group 20 to ensure the orderliness of the arrangement of the multiple battery cell groups 20 in the third direction, but also insulate the adjacent battery cell groups 20 to prevent short circuits between the adjacent battery cell groups 20.

[0075] Furthermore, a glue injection space 31 is formed between two adjacent limit plates 312 and the bottom wall 313, so that when the glue is injected into the glue space from the second direction, the glue can flow in the glue injection space 31, and the limit plate 312 can block the glue, thereby reducing the overflow of the glue in the third direction, and ensuring that the glue can flow from the open mouth 311 in the first direction to between the structural beam 11 and the battery cell 21 on the corresponding side, thereby improving the accuracy of the glue injection and improving the glue injection effect.

[0076] Also, considering that the electrical connection between two adjacent battery cells 21 is located in the glue injection space 31, when the glue is injected into the glue injection space 31 from the second direction, the electrical connection between the two adjacent battery cells 21 will block the glue, so that the glue can be blocked to the gap between the electrical connection on one side and the limiting plate 312, and the glue flows to the bottom wall 313 and gathers on the bottom wall 313.

[0077] By making one end of the overflow glue channel 32 open toward the limiting plate 312 and the other end open toward the open port 311, when the glue flows to the bottom wall 313, it can first flow into the opening at one end of the overflow glue channel 32, and then flow out from the open ports 311 on both sides under the guidance of the overflow glue channel 32, and further flow to between the structural beam 11 and the battery cell 21 on the corresponding side, so as to further optimize the structural design of the overflow glue channel 32, ensure that the glue can flow between the structural beam 11 and the battery cell 21 on both sides of the first direction, and make the glue amount between the structural beam 11 and the battery cell 21 on both sides of the first direction evenly distributed.

[0078] It should be noted that after the limiting plate 312 is set on the insulating member 30, the opening 311 on the side facing the battery cell 21 can be fully open or partially open. The specific size can be determined according to the size of the connecting row 22 between the two battery cells 21, and is not specifically limited here.

[0079] Combination Figure 8 As shown, the structural beam 11 is provided with a first clamping portion 111, and the insulating member 30 is provided with a second clamping portion 33, and the first clamping portion 111 is clamped and matched with the second clamping portion 33. Specifically, by providing the first clamping portion 111 on the upper part of the structural beam 11, and providing the second clamping portion 33 in the second direction of the insulating member 30, the insulating member 30 can be provided on the structural beam 11 only by clamping and matching the first clamping portion 111 with the second clamping portion 33, so that the provision of the insulating member 30 on the structural beam 11 can be simpler and more reliable.

[0080] Furthermore, the first clamping portion 111 can be set to be multiple, and the multiple first clamping portions 111 are arranged at intervals in the third direction of the structural beam 11, and the second clamping portion 33 can be set to be multiple, and the multiple second clamping portions 33 correspond one-to-one to the multiple first clamping portions 111. In this way, multiple clamping fits can be formed between the insulating member 30 and the structural beam 11 to prevent the length of the structural beam 11 in the third direction from being too large and the clamping fit force between the insulating member 30 and the structural beam 11 from being insufficient, thereby further improving the stable and reliable connection between the insulating member 30 and the structural beam 11.

[0081] Optionally, the first clamping portion 111 can be set as a clamping slot, and the second clamping portion 33 can be set as a clamping hook. The clamping fit between the first clamping portion 111 and the second clamping portion 33 can be achieved by simply extending the clamping hook into the clamping slot, thereby optimizing the structural design of the first clamping portion 111 and the second clamping portion 33, which not only improves the fitting speed and fitting accuracy between the first clamping portion 111 and the second clamping portion 33, but also improves the stability and reliability between the first clamping portion 111 and the second clamping portion 33.

[0082] In some embodiments of the present invention, Figure 3 and Figure 5As shown, the battery cell group 20 may mainly include a plurality of battery cells 21, and the plurality of battery cells 21 are electrically connected to each other in the first direction. Specifically, the plurality of battery cells 21 may be connected in series in the first direction to form a battery cell group 20, and the plurality of battery cell groups 20 may be arranged in sequence in the third direction, and the plurality of battery cell groups 20 may be electrically connected to each other through the bus 23, that is, the battery cells 21 in the battery pack 100 are arranged in series in sequence, so that the structure of the battery pack 100 can be made simpler while improving the volume utilization of the battery pack 100. In a specific embodiment of the present invention, the battery cell group 20 includes two battery cells 21 electrically connected in the first direction, which will not be described in detail here.

[0083] In other embodiments of the present invention, the battery cell group 20 may include a plurality of battery cells 21, and the plurality of battery cells 21 are located on one side of the structural beam 11 along the first direction, and are arranged sequentially in the third direction and electrically connected to each other. Specifically, the plurality of battery cells 21 in a battery cell group 20 may be located on one side of the structural beam 11 along the first direction, and the plurality of battery cells 21 may be arranged sequentially in the third direction and electrically connected, so that the plurality of battery cells 21 may be connected in series in the third direction, so that the battery cells 21 in the battery pack 100 may also be arranged sequentially in series to ensure the normal operation of the battery pack 100. Among them, the pole 212 may be arranged on two adjacent faces of the battery cell 21, or may be arranged at the same end, that is, an end close to the structural beam 11 or an end away from the structural beam 11.

[0084] Combination Figure 5 and Figure 6 As shown, along the first direction or along the third direction, a connection row 22 is electrically connected between two adjacent battery cells 21, and the connection row 22 can mainly include a first connection portion 221 and a second connection portion 222, the first connection portion 221 is electrically connected to the pole 212 of one of the two adjacent battery cells 21, and the second connection portion 222 is electrically connected to the pole 212 of the other of the two adjacent battery cells 21, so that the electrical connection between the two adjacent battery cells 21 can be achieved, and the electrical connection between the two adjacent battery cells 21 can be made simpler and more convenient. Among them, the connection row 22 can be connected to the pole 212 by welding.

[0085] Combination Figure 6 and Figure 7 As shown, the first connection portion 221 is provided with a first fixing member 2211 , which is connected and fixed to the second connection portion 222 , and the second connection portion 222 is provided with a second fixing member 2221 , which is connected and fixed to the first connection portion 221 .

[0086] Specifically, in order to ensure the folding design of the connecting row 22, the thickness of the connecting row 22 can be reduced, but the reduction in thickness will reduce the current flow capacity of the connecting row 22. By setting a first fixing member 2211 on the first connecting portion 221 and a second fixing member 2221 on the second connecting portion 222, after the first connecting portion 221 and the second connecting portion 222 are bent and fitted to each other, the first fixing member 2211 can be connected and fixed to the second connecting portion 222, and the second fixing member 2221 can be connected and fixed to the first connecting portion 221, so that the first connecting portion 221 and the second connecting portion 222 can be locked, and the relative fitting contact electrical connection in the first direction between the first connecting portion 221 and the second connecting portion 222 can be ensured, which can not only increase the effective flow conduction path and increase the flow conduction area, thereby improving the current flow capacity, but also maintain the state in which the first connecting portion 221 and the second connecting portion 222 are bent to each other, so that the two battery cells 21 maintain a shape parallel to each other in the first direction, which can improve the structural reliability of the battery pack 100.

[0087] It should be noted that, the first fixing member 2211 may be provided only on the first connection part 221, so that the first fixing member 2211 is connected and fixed to the second connection part 222, so as to lock the first connection part 221 and the second connection part 222; or the second fixing member 2221 may be provided only on the second connection part 222, so that the second fixing member 2221 is clamped and fixed to the first connection part 221, so as to lock the first connection part 221 and the second connection part 222. No specific limitation is made here, and production can be carried out according to actual needs.

[0088] Furthermore, combined with Figure 7 As shown, the first connection part 221 can be provided with a plurality of first fixing members 2211 arranged at intervals, with a first notch 2213 between two adjacent first fixing members 2211, and the second connection part 222 can be provided with a plurality of second fixing members 2221 arranged at intervals, with a second notch 2223 between two adjacent second fixing members 2221, so that after the first connection part 221 and the second connection part 222 are bent and fitted to each other, the first fixing member 2211 and the second fixing member 2221 can be staggered with each other, the first fixing member 2211 can be fixed to the second notch 2223, thereby locking the first connection part 221 and the second connection part 222, and the second fixing member 2221 can be fixed to the second notch 2223, thereby locking the first connection part 221 and the second connection part 222, so that the mutual locking between the first connection part 221 and the second connection part 222 can be achieved.

[0089] In some embodiments of the present invention, Figure 5-Figure 7As shown, the first fixing member 2211 is a first buckle, which can be bent relative to the first connecting portion 221 and fixed with the second connecting portion 222, and the second fixing member 2221 is a second buckle, which can be bent relative to the second connecting portion 222 and fixed with the first connecting portion 221.

[0090] Specifically, by setting the first fixing member 2211 as the first buckle, after the first connecting part 221 and the second connecting part 222 are bent and fitted together, it is only necessary to bend the first fixing member 2211 relative to the first connecting part 221 so that the first fixing member 2211 and the second connecting part 222 can be snap-fitted and fixed, thereby making the connection and fixation between the first fixing member 2211 and the second connecting part 222 simpler and more reliable.

[0091] Furthermore, after the first connection part 221 and the second connection part 222 are bent and fitted together, it is only necessary to bend the second fixing member 2221 relative to the second connection part 222 so that the second fixing member 2221 and the first connection part 221 can be snap-fitted and fixed, thereby making the connection and fixation between the second fixing member 2221 and the first connection part 221 simpler and more reliable.

[0092] Combination Figure 7 As shown, a surface of the first connection part 221 along its thickness direction contacts a surface of the second connection part 222 along its thickness direction. Specifically, a surface of the first connection part 221 along its thickness direction is defined as a first welding surface 2212, and a surface of the second connection part 222 along its thickness direction is defined as a second welding surface 2222. After the first connection part 221 and the second connection part 222 are relatively bent, the first welding surface 2212 and the second welding surface 2222 can be made to contact each other, and the first welding surface 2212 and the second welding surface 2222 are welded and fixed. Such an arrangement can further improve the current carrying capacity of the connection row 22, and can further keep the two battery cells 21 in a parallel shape in the first direction, thereby further improving the reliability of the battery pack 100 and improving the working performance of the battery pack 100.

[0093] Combination Figure 5-Figure 9 As shown, one end of the first connection portion 221 and the second connection portion 222 are bendably connected to each other, and the first connection portion 221 and the second connection portion 222 are both located in the glue injection space 31 .

[0094] Specifically, by connecting one end of the first connection part 221 and the second connection part 222 to each other in a bendable manner, after the connection row 22 electrically connects the two battery cells 21, the first connection part 221 can be bent relative to the second connection part 222, so that the first connection part 221 and the second connection part 222 are relatively close to each other in the first direction and are electrically connected, thereby achieving the first direction electrical connection between the two battery cells 21, increasing the conduction path, and ensuring the normal operation of the battery pack 100.

[0095] Furthermore, after the connecting row 22 electrically connects the two battery cells 21, the basic structure of the battery cell group 20 can be formed. The connecting row 22 and the poles 212 of the two battery cells 21 constitute the electrical connection inside the battery cell group 20. By arranging the first connecting portion 221 and the second connecting portion 222 of the connecting row 22 in the glue injection space 31, a stable connection between the connecting row 22 and the insulating member 30 can be achieved, which not only enables the insulating member 30 to position and insulate two adjacent connecting rows 22 in the third direction, but also reduces the movement of the connecting row 22 when the battery pack 100 expands, thereby avoiding poor contact, thereby further improving the reliability of the battery pack 100.

[0096] Combination Figure 5 As shown, explosion-proof valves 211 are respectively provided at both ends of the first direction of the battery cell group 20, and an explosion-proof vent valve 12 is provided on the tray 10, and the explosion-proof valve 211 is adapted to be connected to the explosion-proof vent valve 12. Specifically, the battery cell 21 generates high-pressure gas when working, and when excessive pressure is generated inside the battery cell 21, the explosion-proof valve 211 will automatically open to release the high-pressure gas into the external environment, thereby reducing the pressure inside the battery cell 21 and effectively preventing the risk of explosion of the battery cell 21.

[0097] Taking into account that two adjacent battery cells 21 in the battery cell group 20 are arranged in series, by arranging two types of battery cells 21, the explosion-proof valve 211 of one battery cell 21 is arranged at the positive terminal surface, and the explosion-proof valve 211 of the other battery cell 21 is arranged at the negative terminal surface, and the two types of battery cells 21 are arranged in a first direction at intervals from each other and connected in series, the battery cell group 20 can be provided with explosion-proof valves 211 at both ends of the first direction, respectively. In this way, after the battery cell group 20 is set on the tray 10, the explosion-proof valve 211 of the battery cell 21 can be distributed close to the side beam 13 of the tray 10, and the explosion-proof valve 211 of the battery cell 21 is connected to the explosion-proof ventilation valve 12 on the tray 10, so that the exhaust path of the battery cell 21 can be shortened, the exhaust efficiency of the battery pack 100 can be improved, and the safety of the battery pack 100 can be improved.

[0098] Combination Figure 3 and Figure 4 As shown, a flow guide cover 40 is arranged in the tray 10, and the flow guide cover 40 is respectively connected to the explosion-proof valve 211 and the explosion-proof air-permeable valve 12.

[0099] Specifically, a flow guide 40 is provided between the two ends of the battery cell group 20 in the first direction and the side beams 13 of the tray 10, and the flow guide 40 is extended in the third direction, so that the flow guide 40 is connected to the explosion-proof valve 211 at one end of the first direction of the multiple battery cell groups 20, so that the high-pressure gas released by the multiple battery cells 21 can enter the flow guide 40.

[0100] Furthermore, explosion-proof ventilation valves 12 are provided at both ends of the first direction of the pallet 10, and an exhaust channel and a plurality of exhaust holes 131 arranged at intervals are provided in the side beams 13 on both sides of the first direction of the pallet 10, the plurality of exhaust holes 131 are connected to the air guide cover 40, and the exhaust channel is connected to the plurality of exhaust holes 131 and the explosion-proof ventilation valve 12, so that the high-pressure gas entering the air guide cover 40 can further flow into the exhaust channel through the exhaust holes 131 under the guiding effect of the air guide cover 40, and then flow out from the explosion-proof ventilation valve 12.

[0101] In this way, the high-pressure gas in the battery cell 21 can be released to ensure the normal operation of the battery cell 21, so that the exhaust of the battery cell 21 can be directional, thereby achieving electrical separation, avoiding arcing and fire, and preventing other battery cells 21 from thermal runaway. In addition, different from the solution of achieving electrical separation by exhausting at the bottom of the battery cell in the prior art, the structure of the battery cell 21 of the present application is simpler, without increasing the cost and manufacturing difficulty of the battery cell 21.

[0102] Combination Figure 3 and Fig.13 As shown, the battery pack 100 may further include a collection module 50 , which may mainly include a collection circuit board 51 and a sampling component 52 , wherein one end of the sampling component 52 is electrically connected to the collection circuit board 51 , and the other end is electrically connected to the battery cell group 20 .

[0103] Specifically, when the battery pack 100 is in operation, it is necessary to sample and monitor the voltage and temperature of the battery cells 21. Considering that a plurality of spaced-apart battery cell groups 20 are directly arranged in the battery pack 100, by providing two sampling pieces 52 and electrically connecting them to the two ends of the first direction of the collection circuit board 51 respectively, and making one end of each sampling piece 52 electrically connected to the collection circuit board 51, and the other end electrically connected to the battery cell group 20, the sampling piece 52 can collect the voltage and temperature of the battery cells 21 on both sides of the first direction of the structural beam 11, and transmit them to the collection circuit board 51, thereby facilitating the monitoring of the voltage and temperature of each battery cell 21.

[0104] In some embodiments of the present invention, one end of the sampling component 52 is welded and fixed to the acquisition circuit board 51. This not only improves the connection stability and reliability between the sampling component 52 and the acquisition circuit board 51, and improves the reliability of the acquisition module 50, but also enables the sampling component 52 and the acquisition circuit board 51 to form a whole, thereby achieving a high degree of integration of the acquisition module 50.

[0105] It should be noted that in some other embodiments of the present invention, one end of the sampling component 52 can also be plugged and fixed to the acquisition circuit board 51. In this way, while ensuring the high integration of the acquisition module 50, the sampling component 52 or the acquisition circuit board 51 can be easily replaced separately, which can reduce maintenance costs.

[0106] Combination Figure 3 As shown, the collection circuit board 51 is spaced apart on one side of the battery cell group 20 in the third direction, one end of the sampling member 52 is electrically connected to the end of the collection circuit board 51 in the first direction, and the other end is electrically connected to the end of the battery cell group 20 in the first direction.

[0107] Specifically, multiple battery cell groups 20 are arranged at intervals in the third direction. By arranging the collection circuit board 51 at intervals on one side of the battery cell group 20 in the third direction, not only can the collection circuit board 51 avoid the multiple battery cell groups 20 and make full use of the space on one side of the third direction of the battery cell group 20, but also it can facilitate the arrangement of the sampling component 52 on both sides of the first direction of the battery cell group 20, so that one end of the sampling component 52 is electrically connected to the end of the collection circuit board 51 in the first direction, and the other end is electrically connected to the end of the battery cell group 20 in the first direction, thereby reducing the number of components of the collection module 50, reducing the space occupied by the collection module 50, and improving the integration of the collection module 50.

[0108] Combination Fig.14 As shown, the sampling member 52 is provided with a plurality of notches 5211 arranged at intervals, a sampling point 5212 is provided at the position of the sampling member 52 corresponding to the notch 5211, a sampling point 5212 is provided at the position between two adjacent notches 5211 of the sampling member 52, and the sampling point 5212 is electrically connected to the battery cell group 20. In this way, a sampling member 52 can have a plurality of sampling points 5212, so that a sampling member 52 can collect voltages and temperatures of a plurality of battery cells 21, reduce the number of components of the collection module 50, reduce the occupied space of the collection module 50, and further improve the integration of the collection module 50.

[0109] It should be noted that the sampling point 5212 can be set only at the position of the sampling piece 52 corresponding to the notch 5211, or the sampling point 5212 can be set only at the position between two adjacent notches 5211 of the sampling piece 52. This is not limited here. In actual production, the selection can be made according to the application scenario and the number of battery cells 21 that need to be sampled.

[0110] Combination Fig.14 As shown, the sampling member 52 may include a plurality of sub-sampling members 521 , and the plurality of sub-sampling members 521 are stacked.

[0111] Specifically, the battery pack 100 is provided with a plurality of battery cell groups 20 arranged in sequence in the third direction. By making the sampling component 52 include a plurality of sub-sampling components 521, one sub-sampling component 521 can collect part of a plurality of battery cell groups 20, so that the sampling component 52 can monitor the battery cells 21 in the plurality of battery cell groups 20.

[0112] Furthermore, a positioning post can be set on one of two adjacent sub-sampling components 521, and a positioning hole can be set on the other one, so that the assembly positioning between the two adjacent sub-sampling components 521 can be formed by the positioning post and the positioning hole, and the positioning post can be fixed by hot melting to achieve a stacked arrangement of multiple sub-sampling components 521. In this way, the sampling component 52 can have a large number of sampling strings but a small surface area, which can further improve the integration of the collection module 50 and improve the structural compactness of the collection module 50.

[0113] Combination Fig.11 and Fig.12 As shown, a distribution box 60 is disposed in the tray 10 , and the distribution box 60 is located at one end of the plurality of battery cell groups 20 in the third direction. A circuit board accommodating space 61 is disposed in the distribution box 60 , and the collection circuit board 51 is disposed in the circuit board accommodating space 61 .

[0114] Specifically, by arranging the distribution box 60 at one end of the third direction of the plurality of battery cell groups 20, and providing a circuit board accommodating space 61 in the distribution box 60, when the acquisition module 50 is arranged in the battery pack 100, the acquisition circuit board 51 can be arranged in the circuit board accommodating space 61, thereby not only ensuring the stable arrangement of the acquisition circuit board 51 and even the acquisition module 50 in the battery pack 100, but also the distribution box 60 can cover and protect the acquisition circuit board 51, thereby avoiding structural damage to the acquisition circuit board 51.

[0115] Combination Fig.11 and Fig.12 As shown, at least one side of the circuit board accommodating space 61 along the second direction is provided with a limiting groove 62 , and one end of the acquisition circuit board 51 along the second direction is limitedly matched with the limiting groove 62 .

[0116] Specifically, by setting a limiting groove 62 on at least one side of the circuit board accommodating space 61 along the second direction, after the collection circuit board 51 is set in the circuit board accommodating space 61, one end of the collection circuit board 51 along the second direction can correspond to the limiting groove 62 for limiting cooperation, thereby preventing the collection circuit board 51 from moving in the circuit board accommodating space 61, causing the sampling piece 52 to be driven, affecting the collection module 50's sampling of the battery cell 21 voltage and temperature.

[0117] Among them, an elastic buffer 64 can be set in the limiting groove 62, and the end of the acquisition circuit board 51 is located in the elastic buffer 64, so that the elastic buffer 64 can buffer the impact force and avoid hard contact between the acquisition circuit board 51 and the distribution box 60, thereby further avoiding structural damage to the acquisition circuit board 51.

[0118] Combination Fig.11 and Fig.12 As shown, the battery pack 100 may further include a limit block 63, and the distribution box 60 has a first surface 65 and a second surface 66 on both sides along the second direction, wherein the first surface 65 is recessed toward the second surface 66 to form a circuit board accommodating space 61, and an opening 67 is provided on the side of the circuit board accommodating space 61 facing the first surface 65, and the limit block 63 is arranged at the opening 67, and a limit groove 62 is provided on the limit block 63.

[0119] Specifically, the first surface 65 is recessed toward the second surface 66, and a limiting groove 62 can be directly formed on the side of the circuit board accommodating space 61 facing the second surface 66, and by setting a limiting block 63 at the opening of the circuit board accommodating space 61, the limiting groove 62 is set in the limiting block 63. In this way, during the assembly process of the battery pack 100, the acquisition circuit board 51 can be first set in the circuit board accommodating space 61, so that one end of the acquisition circuit board 51 in the second direction is limited and matched with the limiting groove 62 of the circuit board accommodating space 61, and then the limiting block 63 is set at the opening of the circuit board accommodating space 61, so that the other end of the acquisition circuit board 51 in the second direction is limited and matched with the limiting groove 62 in the limiting block 63, so that not only can both ends of the acquisition circuit board 51 in the second direction be limited, further improving the stable setting of the acquisition circuit board 51 in the circuit board accommodating space 61, but also the installation of the acquisition circuit board 51 in the circuit board accommodating space 61 can be facilitated.

[0120] Combination Figure 3 As shown, the battery pack 100 may further include an upper cover plate 70 , the tray 10 and the upper cover plate 70 together enclose a battery cell accommodating space 14 , the battery cell group 20 is disposed in the battery cell accommodating space 14 , and an adhesive layer is disposed between the battery cell group 20 and the tray 10 , and between the battery cell group 20 and the upper cover plate 70 .

[0121] Specifically, a cold plate 71, thermal insulation cotton 72 and a bottom guard plate 73 are sequentially stacked at the bottom of the tray 10, which can support and protect the battery cell group 20. Glue can be evenly coated on the bottom of the battery cell group 20, and then the tray 10 is turned upside down on the battery cell 21. After flipping, the tooling increases the pre-tightening force for pressure-maintaining and curing, so that a glue layer can be provided between the battery cell group 20 and the tray 10, and a stable and reliable connection between the bottoms of multiple battery cell groups 20 and the tray 10 can be achieved.

[0122] Furthermore, the upper side of the tray 10 is open, and the upper cover 70 is provided to cover the upper side of the tray 10, so that the tray 10 and the upper cover 70 can together enclose a battery cell accommodating space 14, and the battery cell group 20 is located in the battery cell accommodating space 14. The upper cover 70 and the tray 10 can provide a cover and protection for the battery cell group 20 to prevent the erosion of foreign matter or the impact of external force from damaging the structure of the battery cell 21, thereby ensuring that the battery cell 21 can work normally, and by providing a glue layer between the upper cover 70 and the top of the plurality of battery cell groups 20, a stable and reliable connection between the top of the plurality of battery cell groups 20 and the upper cover 70 can be achieved.

[0123] In this way, the battery cell 21 can form a whole with the tray 10 and the upper cover 70 , thereby ensuring the structural strength of the upper, lower and middle parts of the battery pack 100 and improving the structural reliability of the battery pack 100 .

[0124] It should be noted that the type of the glue injected into the glue injection space 31 is different from the type of glue coated on the bottom and top of the battery cell group 20. The glue injected into the glue injection space 31 can be aerogel or glue, and the glue coated on the bottom and top of the battery cell group 20 is thermally conductive glue. In actual production, it can be selected according to actual needs, and is not specifically limited here.

[0125] The electric device according to the present invention may mainly include: the above-mentioned battery pack 100. Specifically, by applying the battery pack 100 to the electric device, the safety and reliability of the electric device can be improved, and the cost of the electric device can be reduced, thereby improving the product competitiveness of the electric device.

[0126] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as limiting the present invention.

[0127] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0128] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A pallet (10), wherein the pallet (10) is provided with a structural beam (11); A battery cell group (20), the battery cell group (20) being arranged in the tray (10) and comprising at least two battery cells (21), wherein two adjacent battery cells (21) are respectively located on two sides of the structural beam (11) in a first direction; An insulating member (30), the insulating member (30) being arranged on one side of the structural beam (11) along a second direction and being provided with a glue injection space (31), the insulating member (30) being provided with an open opening (311) on at least one side along the first direction so that the glue in the glue injection space (31) can flow into between the structural beam (11) and the battery cell (21) on the corresponding side, wherein the first direction and the second direction are perpendicular to each other.

2. The battery pack according to claim 1, characterized in that: The insulating member (30) has a bottom wall (313) adjacent to the structural beam (11) along the second direction, and a glue overflow channel (32) is provided on a surface of the bottom wall (313) facing the glue injection space (31), and the glue overflow channel (32) is connected to the open opening (311).

3. The battery pack according to claim 2, characterized in that: The insulating member (30) is provided with open openings (311) on both sides along the first direction, and the overflow glue channel (32) is connected to the two open openings (311).

4. The battery pack according to claim 2 or 3, characterized in that: The overflow glue flow channel (32) comprises a plurality of sub-overflow glue flow channels (321), and the plurality of sub-overflow glue flow channels (321) are arranged at intervals.

5. The battery pack according to claim 4, characterized in that: The sub-overflow glue flow channels (321) are all arc-shaped and are arranged at intervals in the radial direction.

6. The battery pack according to claim 2 or 3, characterized in that: The insulating member (30) is provided with a plurality of limit plates (312) arranged at intervals along a third direction, the limit plates (312) are arranged on the bottom wall (313), and the glue injection space (31) is formed between two adjacent limit plates (312) and the bottom wall (313), one end of the overflow glue channel (32) opens toward the limit plate (312), and the other end opens toward the open opening (311), wherein the third direction is the extension direction of the structural beam (11).

7. The battery pack according to claim 1, characterized in that: The structural beam (11) is provided with a first clamping portion (111), and the insulating member (30) is provided with a second clamping portion (33), and the first clamping portion (111) and the second clamping portion (33) are clamped and matched.

8. The battery pack according to claim 1, characterized in that: The battery cell group (20) comprises a plurality of battery cells (21), wherein the plurality of battery cells (21) are located on one side of the structural beam (11) along the first direction, and are arranged in sequence in the third direction and electrically connected to each other.

9. The battery pack according to claim 8, characterized in that: Along the first direction and / or along the third direction, a connection row (22) is electrically connected between two adjacent battery cells (21), and the connection row (22) comprises a first connection portion (221) and a second connection portion (222), the first connection portion (221) being electrically connected to a pole (212) of one of the two adjacent battery cells (21), and the second connection portion (222) being electrically connected to a pole (212) of the other of the two adjacent battery cells (21).

10. The battery pack according to claim 9, characterized in that: The first connecting portion (221) is provided with a first fixing member (2211), and the first fixing member (2211) is connected and fixed to the second connecting portion (222) so as to lock the first connecting portion (221) and the second connecting portion (222); And / or, the second connecting portion (222) is provided with a second fixing member (2221), and the second fixing member (2221) is connected and fixed to the first connecting portion (221) to lock the first connecting portion (221) and the second connecting portion (222).

11. The battery pack according to claim 10, characterized in that: The first connecting portion (221) has a plurality of first fixing members (2211) arranged at intervals, a first notch (2213) is provided between two adjacent first fixing members (2211), and the second fixing member (2221) is fixed to the first notch (2213) to lock the first connecting portion (221) and the second connecting portion (222); And / or, the second connecting portion (222) has a plurality of second fixing members (2221) arranged at intervals, a second notch (2223) is provided between two adjacent second fixing members (2221), and the first fixing member (2211) is fixed to the second notch (2223) to lock the first connecting portion (221) and the second connecting portion (222).

12. The battery pack according to claim 11, characterized in that: A surface of the first connection portion (221) along the thickness direction thereof contacts a surface of the second connection portion (222) along the thickness direction thereof.

13. The battery pack according to any one of claims 9 to 12, characterized in that: One end of the first connection portion (221) and one end of the second connection portion (222) are connected to each other in a bendable manner.

14. According to the battery pack according to any one of claims 9 to 12, along the first direction, the connecting row (22) between two adjacent battery cells (21) is located in the glue injection space (31).

15. The battery pack according to claim 1, characterized in that: The battery cell group (20) has an explosion-proof valve (211), the tray (10) is provided with an explosion-proof vent valve (12), and the explosion-proof valve (211) is suitable for being connected to the explosion-proof vent valve (12).

16. The battery pack according to claim 15, characterized in that: A flow guide cover (40) is arranged inside the tray (10), and the flow guide cover (40) is respectively connected to the explosion-proof valve (211) and the explosion-proof air-permeable valve (12).

17. The battery pack according to claim 1, characterized in that: It also comprises a collection module (50), the collection module (50) comprising a collection circuit board (51) and a sampling piece (52), one end of the sampling piece (52) being electrically connected to the collection circuit board (51), and the other end of the sampling piece (52) being electrically connected to the battery cell group (20).

18. The battery pack according to claim 17, characterized in that: The sampling component (52) comprises a plurality of sub-sampling components (521), and the plurality of sub-sampling components (521) are stacked.

19. The battery pack according to claim 17, characterized in that: A distribution box (60) is arranged in the tray (10), the distribution box (60) is located at one end of the plurality of battery cell groups (20) in the third direction, the distribution box (60) has a circuit board accommodating space (61), and the acquisition circuit board (51) is arranged in the circuit board accommodating space (61).

20. The battery pack according to claim 19, characterized in that: At least one side of the circuit board accommodating space (61) along the second direction is provided with a limiting groove (62), and one end of the acquisition circuit board (51) along the second direction is limitedly matched with the limiting groove (62).

21. The battery pack according to claim 20, characterized in that: The distribution box (60) further comprises a limit block (63); the distribution box (60) has a first surface (65) and a second surface (66) on both sides along the second direction; the first surface (65) is recessed toward the second surface (66) to form the circuit board accommodating space (61); an opening (67) is provided on one side of the circuit board accommodating space (61) facing the first surface (65); the limit block (63) is arranged at the opening (67); and the limit groove (62) is provided on the limit block (63).

22. The battery pack according to claim 1, characterized in that: It also includes an upper cover plate (70), wherein the tray (10) and the upper cover plate (70) together enclose a battery cell accommodating space (14), the battery cell group (20) is arranged in the battery cell accommodating space (14), and an adhesive layer is arranged between the battery cell group (20) and the tray (10) and / or the upper cover plate (70).

23. An electrical equipment, characterized in that: A battery pack (100) comprising any one of claims 1-22.

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