Battery pack filling assembly, battery pack and electric equipment

Abstract

The utility model relates to a battery pack filling assembly, a battery pack and electric equipment, the battery pack filling assembly is suitable for being filled in a gap between a battery cell group of the battery pack and a beam of a tray of the battery pack, the battery pack filling assembly comprises a support and a partition plate, and the support and the partition plate are suitable for being sequentially arranged in the direction from the battery cell group to the beam of the tray; the partition plate is suitable for defining a glue injection space suitable for containing glue together with a beam of the tray, the support is provided with a first side and a second side which are opposite, the first side is suitable for abutting against the battery cell set, the second side abuts against the partition plate, a glue injection hole is formed in the support, a glue inlet is formed in the partition plate, and the glue injection hole is communicated with the glue injection space through the glue inlet. By using the battery pack filling assembly provided by the invention, the gaps between the battery cell groups of different battery packs and the beams of the tray can be filled, the gaps between the battery cell groups at different positions in the same battery pack and the beams of the tray can also be filled, and the battery cell groups are well supported.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery packs, and in particular, to a battery pack filling assembly, a battery pack, and an electrical device. Background Art

[0002] The battery pack capacity retention rate affects the range of electric vehicles and is one of the important indicators for evaluating the comprehensive performance of battery packs. A battery pack usually includes a tray and a battery cell group arranged in the tray. The battery cell group is composed of multiple stacked batteries. In order to smoothly load the battery cell group into the tray of the battery pack, there must be an assembly gap between the tray side beam and the battery cell group. The battery cell group has a movable space in the tray, which causes a gap between the batteries. Studies have shown that this gap will cause the capacity of the battery cell to decrease with the increase in the number of charge and discharge cycles, thereby reducing the overall capacity retention rate of the battery pack. Therefore, it is very necessary to fill the gap between the tray side beam and the battery cell group. However, the filling effect of this gap in the related art is not ideal. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery pack filling assembly, a battery pack, and an electrical device to at least partially solve the technical problems existing in the related art.

[0004] In order to achieve the above object, according to a first aspect of the present disclosure, a battery pack filling assembly is provided, the battery pack filling assembly being suitable for filling a gap between a cell group of a battery pack and a beam of a tray of the battery pack, the battery pack filling assembly comprising a bracket and a partition;

[0005] The bracket and the partition are suitable for being arranged in sequence along the direction from the battery cell group to the beam of the tray, the partition is suitable for defining together with the beam of the tray a glue injection space suitable for accommodating the glue, the bracket has a first side and a second side opposite to each other, the first side is suitable for abutting the battery cell group, and the second side abuts against the partition;

[0006] The bracket is provided with a glue injection hole, the partition is provided with a glue inlet, and the glue injection hole is communicated with the glue injection space through the glue inlet.

[0007] Optionally, the bracket is provided with a decompression channel, and the decompression channel communicates with the glue injection hole and the glue inlet.

[0008] Optionally, the inlet of the decompression channel is communicated with the outlet of the glue injection hole, and the area of ​​the inlet of the decompression channel is larger than the area of ​​the outlet of the glue injection hole.

[0009] Optionally, the cross section at the inlet of the decompression channel is the cross section with the smallest area among all cross sections of the decompression channel cut along a direction perpendicular to the extension direction of the decompression channel.

[0010] Optionally, along the direction from the inlet to the outlet of the decompression channel, the cross-sectional area of ​​the decompression channel gradually increases.

[0011] Optionally, along a direction perpendicular to the partition, a projection of the outlet of the pressure reducing channel on the partition is located within the region where the glue inlet is located.

[0012] Optionally, the glue injection hole is located in the middle of the bracket in the length direction.

[0013] Optionally, the second side is provided with reinforcing ribs arranged in a honeycomb shape.

[0014] Optionally, the bracket is provided with a glue overflow cavity, and the glue overflow cavity is suitable for communicating with the upper part of the glue injection space.

[0015] Optionally, a protrusion is provided on the second side, and the protrusion is suitable for enclosing the glue overflow cavity.

[0016] Optionally, the partition is provided with a glue overflow port, and the glue overflow cavity is connected with the upper part of the glue injection space through the glue overflow port.

[0017] Optionally, the bracket is provided with a mounting structure suitable for accommodating components related to the battery cell group.

[0018] Optionally, the mounting structure comprises a wiring trough suitable for routing a wiring harness.

[0019] Optionally, the wiring groove includes a first wiring groove penetrating along the length direction of the bracket, and the first wiring groove is arranged at the upper end of the bracket.

[0020] Optionally, the wiring groove includes a second wiring groove penetrating along the length direction of the bracket, and the second wiring groove is arranged on the second side and located in the middle of the bracket in the height direction.

[0021] Optionally, the battery pack filling assembly further includes a seal, which is suitable for being sandwiched between the partition and the beam of the tray, and the seal can define a glue injection space together with the partition and the beam of the tray.

[0022] Optionally, the sealing member is constructed as an annular member with an opening partially at the upper end.

[0023] Optionally, the sealing member comprises a first section and two second sections, the first ends of the two second sections are respectively connected to opposite ends of the first section, and there is a gap between the second ends of the two second sections, wherein the two second sections are arranged at an angle to the first section;

[0024] The seal also includes a third section, which is located above the first section, and the opposite ends of the third section are respectively spaced apart from the second ends of the two second sections, and the opening is located at the interval between the two ends of the third section and the second ends of the two second sections.

[0025] Optionally, the battery pack includes a colloid located in the glue injection space.

[0026] According to a second aspect of the present disclosure, there is provided a battery pack, comprising a tray, a battery cell group and the above-mentioned battery pack filling assembly;

[0027] The battery cell group is arranged in the cavity of the tray;

[0028] The battery pack filling assembly is filled in the gap between the battery cell group and the beam of the tray.

[0029] According to a third aspect of the present disclosure, there is provided an electrical device, comprising a device body and the above-mentioned battery pack, wherein the battery pack is installed on the device body and is suitable for supplying power to the device body.

[0030] Through the above technical scheme, the battery pack filling assembly can be filled in the gap between the battery cell group of the battery pack and the beam of the tray, so that the first side of the bracket abuts the battery cell group, and the second side of the bracket abuts the partition, the partition and the beam of the tray jointly define a glue injection space, and the glue is injected into the glue injection space. The fluidity of the colloid is used to make the colloid fully fill the glue injection space, and the colloid can provide good support for the battery cell group after solidification. Therefore, the battery pack filling assembly provided in the present application can be used to fill the gap between the battery cell groups of different battery packs and the beam of the tray, and can also fill the gap between the battery cell groups at different positions in the same battery pack and the beam of the tray, and provide good support for the battery cell groups.

[0031] Furthermore, since the glue injection space is limited between the partition plate and the beam of the tray, the contact between the glue and the battery cell group can be effectively avoided, thereby avoiding the influence of the glue on the battery cell group.

[0032] In addition, since the bracket is provided with a glue injection hole, and the glue injection hole is connected with the glue injection space through the glue inlet, when injecting glue into the glue injection space, the glue injection nozzle of the glue injection equipment can be stuck on the glue injection hole (such as partially inserting the glue injection nozzle into the glue injection hole), and glue is injected into the glue injection space through the glue injection hole. On the one hand, it can prevent the glue injection nozzle from shaking during the glue injection process and injecting the glue outside the glue injection space. On the other hand, when the gap between the battery cell group and the beam of the tray is too small, that is, the gap between the partition and the beam of the tray is too small, the glue injection nozzle can still inject glue into the glue injection space.

[0033] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0035] Figure 1 is a schematic top view of a battery pack provided in one embodiment of the present disclosure;

[0036] Figure 2 is a partial cross-sectional schematic diagram of a battery pack provided in one embodiment of the present disclosure;

[0037] Figure 3 is a schematic diagram of a three-dimensional structure of a battery pack filling assembly in an exploded state provided by an embodiment of the present disclosure;

[0038] Figure 4 is a partial cross-sectional schematic diagram of a battery pack from another perspective provided by an embodiment of the present disclosure;

[0039] Figure 5 yes Figure 4 A local enlarged schematic diagram of point A in the middle.

[0040] Description of Reference Numerals

[0041] 1-battery pack filling assembly; 2-battery pack; 3-cell group; 4-tray; 5-tray beam; 10-bracket; 11-first side; 12-second side; 13-glue injection hole; 14-pressure relief channel; 15-reinforcement rib; 16-glue overflow cavity; 17-protrusion; 18-installation structure; 181-first wiring groove; 182-second wiring groove; 20-partition; 21-glue inlet; 22-glue overflow port; 30-glue injection space; 40-seal; 41-first section; 42-second section; 43-third section; 44-opening. DETAILED DESCRIPTION

[0042] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0043] In the present disclosure, unless otherwise stated, the directional words used, such as "upper, lower, top, bottom", are usually defined by the drawing direction of the corresponding drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. "Inside and outside" refer to the inside and outside of the corresponding component outline. In addition, the terms "first", "second", etc., are used to distinguish one element from another, and do not have order and importance.

[0044] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0045] As mentioned above, the filling effect of the gap between the battery cell group and the beam of the tray in the related art is not ideal, mainly because there are errors in the manufacturing and assembly of various components of the battery pack, resulting in the gap size between different battery packs and battery cell groups at different positions in the battery pack and the beam of the tray being non-fixed.

[0046] In view of this, if Figures 1 to 5 As shown, according to the first aspect of the present disclosure, a battery pack filling assembly 1 is provided, and the battery pack filling assembly 1 is suitable for filling in the gap between the battery cell group 3 of the battery pack 2 and the beam 5 of the tray of the battery pack 2, and the battery pack filling assembly 1 includes a bracket 10 and a partition 20, and the bracket 10 and the partition 20 are suitable for being arranged in sequence along the direction from the battery cell group 3 to the beam 5 of the tray, and the partition 20 is suitable for jointly defining with the beam 5 of the tray a glue injection space 30 suitable for accommodating the colloid, and the bracket 10 has a first side 11 and a second side 12 opposite to each other, the first side 11 is suitable for abutting the battery cell group 3, and the second side 12 abuts against the partition 20, and a glue injection hole 13 is arranged on the bracket 10, and a glue inlet 21 is arranged on the partition 20, and the glue injection hole 13 is connected with the glue injection space 30 through the glue inlet 21.

[0047] Through the above technical scheme, the battery pack filling component 1 can be filled in the gap between the cell group 3 of the battery pack 2 and the beam 5 of the tray, so that the first side 11 of the bracket 10 abuts the cell group 3, and the second side 12 of the bracket 10 abuts the partition 20. The partition 20 and the beam 5 of the tray jointly define a glue injection space 30, and a colloid is injected into the glue injection space 30. By utilizing the fluidity of the colloid, the colloid can fully fill the glue injection space 30. After solidification, the colloid can provide good support for the cell group 3. Therefore, using the battery pack filling component 1 provided in the present application, it is possible to fill the gap between the cell group 3 of different battery packs 2 and the beam 5 of the tray, and it is also possible to fill the gap between the cell group 3 at different positions in the same battery pack 2 and the beam 5 of the tray, and provide good support for the cell group 3.

[0048] Furthermore, since the glue injection space 30 is defined between the partition plate 20 and the beam 5 of the tray, the contact between the glue and the battery cell group 3 can be effectively avoided, thereby avoiding the influence of the glue on the battery cell group 3 .

[0049] In addition, since the bracket 10 is provided with a glue injection hole 13, and the glue injection hole 13 is connected with the glue injection space 30 through the glue inlet 21, when injecting glue into the glue injection space 30, the glue injection nozzle of the glue injection equipment can be stuck on the glue injection hole 13 (such as partially inserting the glue injection nozzle into the glue injection hole 13), and glue is injected into the glue injection space 30 through the glue injection hole 13. On the one hand, it can prevent the glue injection nozzle from shaking during the glue injection process and injecting the glue outside the glue injection space 30. On the other hand, when the gap between the battery cell group 3 and the beam 5 of the tray is too small, that is, the gap between the partition 20 and the beam 5 of the tray is too small, the glue injection nozzle can still inject glue into the glue injection space 30.

[0050] In order to reduce the resistance of the colloid being injected into the glue injection space 30, optionally, as Figure 3 and Figure 5 As shown, the bracket 10 can be provided with a pressure reducing channel 14, which connects the glue injection hole 13 and the glue inlet 21. The pressure reducing channel 14 can reduce the pressure of the colloid from the glue injection hole 13, so as to prevent the colloid from flowing out of the outlet of the glue injection hole 13 and being unable to disperse, so that the resistance of the colloid flowing from the glue injection hole 13 to the glue inlet 21 is greatly reduced, thereby reducing the resistance of the colloid injected into the glue injection space 30, avoiding excessive pressure from affecting the glue injection effect and the safety of the glue injection equipment, and also helping to increase the speed of glue injection into the glue injection space 30 through the glue injection hole 13.

[0051] Alternatively, if Figure 5 As shown, the inlet of the pressure reducing channel 14 can be connected to the outlet of the injection hole 13, and the area of ​​the inlet of the pressure reducing channel 14 can be larger than the area of ​​the outlet of the injection hole 13, so as to reduce the resistance encountered by the colloid flowing from the injection hole 13 into the pressure reducing channel 14.

[0052] The decompression channel 14 can be configured in any suitable form, which is not limited in the present disclosure. As an implementation example, Figure 3 and Figure 5 As shown, the cross-section at the inlet of the decompression channel 14 can be the cross-section with the smallest area among all the cross-sections of the decompression channel 14 cut along the extension direction perpendicular to the decompression channel 14, that is, the flow area at the inlet of the decompression channel 14 is the place with the smallest flow area in the entire decompression channel 14, which is conducive to ensuring that the resistance encountered by the colloid flowing in the decompression channel 14 is smaller than the resistance encountered by the colloid flowing in the injection hole 13.

[0053] As another embodiment, the pressure reducing channel 14 may include multiple sub-channels, the inlets of the multiple sub-channels are connected to the outlet of the glue injection hole 13, the outlets of the multiple sub-channels are connected to the glue inlet 21, and the sum of the areas of the smallest cross-sections among all the cross-sections cut along the extension direction perpendicular to the multiple sub-channels themselves is greater than the area of ​​the outlet of the glue injection hole 13.

[0054] The decompression channel 14 can also be configured in any suitable shape, which is not limited in the present disclosure. As an implementation mode, Figure 3 and Figure 5 As shown, along the direction from the inlet to the outlet of the decompression channel 14 , the cross-sectional area of ​​the decompression channel 14 may gradually increase, so that the resistance of the colloid in the process of flowing in the decompression channel 14 gradually decreases.

[0055] As another embodiment, along the direction from the inlet to the outlet of the decompression channel 14 , the cross-sectional area of ​​the decompression channel 14 may be equal everywhere, or the cross-sectional area of ​​the decompression channel 14 may vary irregularly.

[0056] In order to ensure the effect of the injection channel on reducing the injection resistance, as an implementation method, Figure 5 As shown, along the direction perpendicular to the partition 20, the projection of the outlet of the pressure reducing channel 14 on the partition 20 can be located in the area where the glue inlet 21 is located, so that the glue inlet 21 will not block the outlet of the pressure reducing channel 14, thereby ensuring the effect of the glue injection channel on reducing the glue injection resistance.

[0057] In order to make the colloid fill the injection space 30 more uniformly, as an implementation method, Figure 3 As shown, the injection hole 13 can be located in the middle of the length direction of the bracket 10 (such as Figure 3 The glue inlet 21 can be located in the middle of the length direction of the partition 20, which is conducive to the injection of the colloid from a position close to the middle of the glue injection space 30 to other positions of the glue injection space 30, so that the colloid can flow evenly to the two ends of the length direction of the glue injection space 30, which is conducive to the colloid filling in the glue injection space 30 more evenly.

[0058] In order to reduce the weight of the bracket 10, as an implementation method, Figure 3 As shown, the second side 12 is provided with reinforcing ribs 15 arranged in a honeycomb shape. By providing the reinforcing ribs 15 arranged in a honeycomb shape on the second side 12, the thickness of the bracket 10 can be increased while ensuring that the bracket 10 has sufficient strength, thereby reducing the weight of the bracket 10 and reducing the cost of the bracket 10, which is beneficial to reducing the weight of the battery pack filling assembly 1 and reducing the cost of the battery pack filling assembly 1.

[0059] Since the colloid is viscous, the liquid surface of the colloid presents an arc surface during the rising process in the injection space 30 (that is, the height of the liquid surface of the colloid is different at different places). In order to make the colloid fill the injection space 30 more fully, as an implementation method, Figure 3 As shown, the bracket 10 is provided with an overflow cavity 16, which is suitable for communicating with the upper part of the glue injection space 30. During the glue injection process, the colloid that first rises to the upper part of the glue injection space 30 can flow into the overflow cavity 16, while ensuring that the colloid does not overflow into the battery pack filling assembly 1, so that the colloid in various places in the glue injection space 30 rises to the upper part of the glue injection space 30, so that the colloid can more fully fill the glue injection space 30.

[0060] The present disclosure does not limit the formation method of the overflow glue cavity 16. As an implementation method, Figure 3 As shown, the second side 12 is provided with a protrusion 17 , and the protrusion 17 is suitable for enclosing the overflowing glue cavity 16 , that is, the area enclosed by the protrusion 17 can define the overflowing glue cavity 16 together with the partition plate 20 .

[0061] As another embodiment, a concave cavity is formed on the second side 12 , and the concave cavity and the partition plate 20 can define a glue overflow cavity 16 together.

[0062] In order to make the overflow cavity 16 communicate with the upper part of the glue injection space 30, as an implementation method, Figure 3 As shown, the partition plate 20 is provided with a glue overflow port 22 , and the glue overflow cavity 16 is connected with the upper part of the glue injection space 30 through the glue overflow port 22 .

[0063] Here, optionally, the glue overflow port 22 may be a notch located at the upper end of the partition 20 , or may be a through opening surrounded on all sides.

[0064] As another implementation, the glue in the glue injection space 30 can flow into the glue overflow cavity 16 through the upper end of the partition 20 .

[0065] Alternatively, if Figure 3As shown, the bracket 10 is provided with a mounting structure 18 suitable for accommodating components related to the battery pack 3 (such as sensors, wiring harnesses connected to the battery cells, etc.). By accommodating the components related to the battery pack 3 through the mounting structure 18, the gap between the battery pack 3 and the beam 5 of the tray is fully utilized, which is also conducive to improving the neatness of the interior of the battery pack 2.

[0066] The mounting structure 18 may be constructed into any suitable structure according to the components to be accommodated, and the present disclosure does not limit this. As an embodiment, the mounting structure 18 includes a wiring groove suitable for laying a wiring harness.

[0067] Among them, as an optional implementation mode of the present disclosure, as Figure 3 As shown, the wiring groove includes a first wiring groove 181 penetrating along the length direction of the bracket 10 , and the first wiring groove 181 is arranged at the upper end of the bracket 10 .

[0068] The first wiring groove 181 allows the upper end of the bracket 10 to accommodate a wire harness arranged along the length direction of the bracket 10 and located at the upper end of the bracket 10 .

[0069] As another optional implementation of the present disclosure, Figure 3 As shown, the wiring groove includes a second wiring groove 182 penetrating along the length direction of the bracket 10 , and the second wiring groove 182 is arranged on the second side 12 and located in the middle of the bracket 10 in the height direction.

[0070] The second wiring groove 182 allows the second side 12 of the bracket 10 to accommodate a wiring harness arranged along the length direction of the bracket 10 and located in the middle of the height direction of the bracket 10 .

[0071] In the present disclosure, the mounting structure 18 may also be configured as a structure capable of accommodating a sensor, such as a groove.

[0072] In order to prevent the colloid from flowing out of the glue injection space 30, as an implementation method, Figure 3 and Figure 5 As shown, the battery pack filling assembly 1 also includes a seal 40 , which is suitable for being sandwiched between the partition 20 and the beam 5 of the pallet, and the seal 40 can define a glue injection space 30 together with the partition 20 and the beam 5 of the pallet.

[0073] By providing the seal 40 , on the one hand, the sealing of the glue injection space 30 can be improved to prevent the glue from flowing out of the glue injection space 30 ; on the other hand, the shape and size of the glue injection space 30 can be further limited, which is beneficial to saving glue.

[0074] The present disclosure does not limit the shape of the sealing member 40. As an implementation method, Figure 3As shown, the seal 40 is constructed as a ring-shaped member with an opening 44 at a part of the upper end. During the process of injecting glue into the glue injection space 30, the air in the glue injection space 30 can be discharged through the opening 44, so that the glue is more fully filled in the glue injection space 30. In addition, the staff can also observe the glue injection situation in the glue injection space 30 through the opening 44.

[0075] Alternatively, if Figure 3 As shown, the seal 40 may include a first section 41 and two second sections 42, wherein the first ends of the two second sections 42 are respectively connected to the opposite ends of the first section 41, and there is a gap between the second ends of the two second sections 42, wherein the two second sections 42 are both arranged at an angle to the first section 41, and the seal 40 also includes a third section 43, which is located above the first section 41, and the opposite ends of the third section 43 are respectively arranged to be spaced from the second ends of the two second sections 42, and the opening 44 is located at the gap between the two ends of the third section 43 and the second ends of the two second sections 42.

[0076] Since the opening 44 is located at the interval between the two ends of the third section 43 and the second ends of the two second sections 42, that is, the exhaust port of the glue injection space 30 is located at the two ends in the length direction of the glue injection space 30, the exhaust resistance of the glue on both sides of the glue injection space 30 can be made the same, so that the glue can be filled more evenly in the glue injection space 30.

[0077] Regarding the implementation method mentioned above in which the injection hole 13 is located in the middle of the length direction of the bracket 10, since the liquid level of the colloid is higher near the middle of the length direction of the injection space 30, the exhaust port at the upper end of the injection space 30 is located at both ends of the injection space 30 in the length direction. The highest point of the liquid level of the colloid will first contact the third section 43, and then be discharged to both sides under the obstruction of the third section 43, so that the lowest point of the liquid level of the colloid will finally rise to the exhaust port of the injection space 30, which is conducive to the full filling of the colloid in the injection space 30.

[0078] In addition, since the colloid has a certain flow rate and pressure when being injected into the injection space 30 , the third section 43 can block the colloid splashing out of the injection space 30 , which can not only reduce the waste of colloid, but also prevent the colloid from contaminating the interior of the battery pack 2 .

[0079] In order to ensure that the seal 40 can well seal the glue injection space 30, as an embodiment, the seal 40 can be an elastic member, and the seal 40 is constructed to be in a compressed state when assembled between the battery cell group 3 and the beam 5 of the tray, so that the seal 40 can fit more closely with the partition 20 and the beam 5 of the tray, thereby facilitating the seal 40 to well seal the glue injection space 30.

[0080] Optionally, the seal 40 can be foam compressed by a vacuum bag, so that the battery pack filling assembly 1 provided in the present application can be inserted more easily into the gap between the battery cell group 3 and the beam 5 of the pallet. After the battery pack filling assembly 1 is inserted into the gap, the vacuum bag is cut to allow the foam to expand and fit with the partition 20 and the beam 5 of the pallet, and together define the glue injection space 30.

[0081] Optionally, the battery pack 2 may include a glue in the glue injection space 30 .

[0082] According to a second aspect of the present disclosure, a battery pack 2 is provided, comprising a tray 4, a battery cell group 3 and the above-mentioned battery pack filling assembly 1.

[0083] The battery pack 3 is arranged in the cavity of the tray 4.

[0084] The battery pack filling assembly 1 is filled in the gap between the battery cell group 3 and the beam 5 of the tray. The beam 5 can be a side beam of the tray 4 or a partition beam of the tray 4, which is not limited in the present disclosure.

[0085] According to a third aspect of the present disclosure, there is provided an electrical device, comprising a device body and the above-mentioned battery pack 2, wherein the battery pack 2 is installed in the device body and is suitable for supplying power to the device body.

[0086] Here, the electrical equipment may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, electric tools, etc. The vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle, etc., the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc., the electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc., the electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc., and the present disclosure does not limit this.

[0087] Optionally, when the electrical device is a vehicle, the battery pack may be installed on the body of the vehicle.

[0088] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0089] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0090] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery pack filling assembly, characterized in that: The battery pack filling assembly is suitable for filling the gap between the battery cell group of the battery pack and the beam of the tray of the battery pack, and the battery pack filling assembly includes a bracket and a partition; The bracket and the partition are suitable for being arranged in sequence along the direction from the battery cell group to the beam of the tray, the partition is suitable for defining together with the beam of the tray a glue injection space suitable for accommodating the glue, the bracket has a first side and a second side opposite to each other, the first side is suitable for abutting the battery cell group, and the second side abuts against the partition; The bracket is provided with a glue injection hole, the partition is provided with a glue inlet, and the glue injection hole is communicated with the glue injection space through the glue inlet.

2. The battery pack filling assembly according to claim 1, characterized in that: The bracket is provided with a decompression channel, and the decompression channel is connected with the glue injection hole and the glue inlet.

3. The battery pack filling assembly according to claim 2, characterized in that: The inlet of the decompression channel is communicated with the outlet of the glue injection hole, and the area of ​​the inlet of the decompression channel is larger than the area of ​​the outlet of the glue injection hole.

4. The battery pack filling assembly according to claim 3, characterized in that: The cross section at the inlet of the decompression channel is the cross section with the smallest area among all cross sections of the decompression channel cut along a direction perpendicular to the extension direction of the decompression channel.

5. The battery pack filling assembly according to claim 2, characterized in that: Along the direction from the inlet to the outlet of the decompression channel, the cross-sectional area of ​​the decompression channel gradually increases.

6. The battery pack filling assembly according to claim 2, characterized in that: Along a direction perpendicular to the partition, a projection of the outlet of the pressure reducing channel on the partition is located within the region where the glue inlet is located.

7. The battery pack filling assembly according to claim 1, characterized in that: The glue injection hole is located in the middle of the length direction of the bracket.

8. The battery pack filling assembly according to claim 1, characterized in that: The second side is provided with reinforcing ribs arranged in a honeycomb shape.

9. The battery pack filling assembly according to any one of claims 1 to 8, characterized in that: The bracket is provided with a glue overflow cavity, and the glue overflow cavity is suitable for being communicated with the upper part of the glue injection space.

10. The battery pack filling assembly according to claim 9, characterized in that: The second side is provided with a protrusion, and the protrusion is suitable for enclosing the overflow glue cavity.

11. The battery pack filling assembly according to claim 9, characterized in that: The partition is provided with a glue overflow port, and the glue overflow cavity is communicated with the upper part of the glue injection space through the glue overflow port.

12. The battery pack filling assembly according to any one of claims 1 to 8, characterized in that: The bracket is provided with a mounting structure suitable for accommodating components related to the battery cell group.

13. The battery pack filling assembly according to claim 12, characterized in that: The mounting structure includes a wiring groove suitable for routing a wiring harness.

14. The battery pack filling assembly according to claim 13, characterized in that: The wiring groove includes a first wiring groove penetrating along the length direction of the bracket, and the first wiring groove is arranged at the upper end of the bracket.

15. The battery pack filling assembly according to claim 13, characterized in that: The wiring groove includes a second wiring groove penetrating along the length direction of the bracket, and the second wiring groove is arranged on the second side and located in the middle of the bracket in the height direction.

16. The battery pack filling assembly according to any one of claims 1 to 8, characterized in that: The battery pack filling assembly also includes a seal, which is suitable for being sandwiched between the partition and the beam of the tray, and the seal can jointly define a glue injection space with the partition and the beam of the tray.

17. The battery pack filling assembly according to claim 16, characterized in that: The sealing member is configured as an annular member with an opening partially formed at the upper end.

18. The battery pack filling assembly according to claim 17, characterized in that: The sealing member comprises a first section and two second sections, wherein the first ends of the two second sections are respectively connected to the opposite ends of the first section, and there is a gap between the second ends of the two second sections, wherein the two second sections are arranged at an angle to the first section; The seal also includes a third section, which is located above the first section, and the opposite ends of the third section are respectively spaced apart from the second ends of the two second sections, and the opening is located at the interval between the two ends of the third section and the second ends of the two second sections.

19. The battery pack filling assembly according to any one of claims 1 to 8, characterized in that: The battery pack includes a colloid located in the colloid injection space.

20. A battery pack, characterized in that: Comprising a tray, a battery cell group and a battery pack filling assembly according to any one of claims 1 to 19; The battery cell group is arranged in the cavity of the tray; The battery pack filling assembly is filled in the gap between the battery cell group and the beam of the tray.

21. An electrical equipment, characterized in that: It comprises a device body and the battery pack according to claim 20, wherein the battery pack is mounted on the device body and is suitable for supplying power to the device body.

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