Battery pack filling assembly, battery pack, and electric device

Abstract

An electric device, comprising a battery pack. The battery pack comprises a battery pack filling assembly. The battery pack filling assembly is suitable for filling between a battery cell group of the battery pack and a beam of a tray. The battery pack filling assembly comprises a support and a partition plate that are suitable for being sequentially arranged in a direction from the battery cell group to the beam of the tray. The partition plate is suitable for defining, together with the beam of the tray, an adhesive injection space suitable for accommodating an adhesive. The support has a first side and a second side opposite to each other. The first side is suitable for abutting against the battery cell group, and the second side abuts against the partition plate. An adhesive injection hole is formed on the support, an adhesive inlet is formed on the partition plate, and the adhesive injection hole is communicated with the adhesive injection space through the adhesive inlet.

Description

Battery pack filling assembly, battery pack and electrical equipment

[0001] Cross-reference to related applications

[0002] This disclosure claims priority to Chinese Patent Application No. 2024212389895, filed on May 31, 2024, entitled “Battery Pack Filling Assembly, Battery Pack and Electrical Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of battery pack technology, specifically to a battery pack filling assembly, a battery pack, and an electrical device. Background Technology

[0004] In related technologies, battery packs typically include a tray and cell assemblies arranged within the tray. Each cell assembly consists of multiple stacked cells. To smoothly load the cell assemblies into the tray, an assembly gap is inevitable between the tray's side beams and the cell assemblies. The cell assemblies also have movement space within the tray, resulting in gaps between the individual cells. Studies have shown that these gaps cause the cell capacity to decrease with increasing charge-discharge cycles, thus reducing the overall capacity retention of the battery pack. Therefore, filling the gaps between the tray's side beams and the cell assemblies is essential; however, the filling effect of these gaps in related technologies is not ideal. Summary of the Invention

[0005] The purpose of this 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.

[0006] To achieve the above objectives, according to a first aspect of this disclosure, a battery pack filling assembly is provided, the battery pack filling assembly being adapted to fill the gap between the cell assembly of the battery pack and the beam of the tray of the battery pack, the battery pack filling assembly comprising:

[0007] A bracket having a first side and a second side opposite to each other, the first side being adapted to abut against the battery cell assembly, and the bracket being provided with an injection hole;

[0008] A partition, the second side abutting against the partition, and an adhesive inlet provided on the partition;

[0009] The bracket and the partition are adapted to be arranged sequentially along the beam from the battery cell assembly to the tray. The partition and the beam of the tray are adapted to define a glue injection space suitable for accommodating the glue. The glue injection hole communicates with the glue injection space through the glue inlet.

[0010] Optionally, the bracket is provided with a pressure-reducing channel, which connects the glue injection hole and the glue inlet.

[0011] Optionally, the inlet of the pressure-reducing channel is connected to the outlet of the glue injection hole, and the area of ​​the inlet of the pressure-reducing channel is larger than the area of ​​the outlet of the glue injection hole.

[0012] Optionally, the cross-section at the inlet of the pressure-reducing channel is the cross-section with the smallest area among all cross-sections cut along the extension direction of the pressure-reducing channel perpendicular to the extension direction of the pressure-reducing channel.

[0013] Optionally, the cross-sectional area of ​​the pressure-reducing channel gradually increases along the direction from the inlet to the outlet of the pressure-reducing channel.

[0014] Optionally, along a direction perpendicular to the partition, the projection of the outlet of the pressure-reducing channel onto the partition is located within the area of ​​the glue inlet.

[0015] Optionally, the injection hole is located at the middle of the length direction of the bracket.

[0016] Optionally, the second side is provided with reinforcing ribs arranged in a honeycomb pattern.

[0017] Optionally, the bracket is provided with an overflow cavity, which is adapted to communicate with the upper part of the glue injection space.

[0018] Optionally, the second side is provided with a protrusion, which is adapted to enclose the overflow cavity.

[0019] Optionally, the partition is provided with an overflow port, and the overflow cavity is connected to the upper part of the glue injection space through the overflow port.

[0020] Optionally, the bracket is provided with a mounting structure suitable for accommodating components related to the battery cell assembly.

[0021] Optionally, the mounting structure includes a wiring channel suitable for routing wire harnesses.

[0022] Optionally, the wiring channel includes a first wiring channel that extends along the length of the bracket, and the first wiring channel is disposed at the upper end of the bracket.

[0023] Optionally, the wiring channel includes a second wiring channel that extends along the length of the bracket, and the second wiring channel is disposed on the second side and located in the middle of the height direction of the bracket.

[0024] Optionally, the battery pack filling assembly further includes a seal adapted to be sandwiched between the separator and the beam of the tray, and the seal, together with the separator and the beam of the tray, defines an injection space.

[0025] Optionally, the seal is constructed as an annular element with a partial opening at the upper end.

[0026] Optionally, the seal includes a first segment and two second segments, the first ends of the two second segments are respectively connected to opposite ends of the first segment, and there is a gap between the second ends of the two second segments, wherein both second segments are set at an angle to the first segment;

[0027] The seal further includes a third segment located above the first segment, with the opposite ends of the third segment spaced apart from the second ends of the two second segments, and the opening located at the interval between the two ends of the third segment and the second ends of the two second segments.

[0028] Optionally, the battery pack includes an adhesive located within the injection space.

[0029] According to a second aspect of this disclosure, a battery pack is provided, including a tray, a cell assembly, and the aforementioned battery pack filling assembly;

[0030] The battery cell assembly is arranged within the cavity of the tray;

[0031] The battery pack filling assembly fills the gap between the cell assembly and the beam of the tray.

[0032] According to a third aspect of this disclosure, an electrical device is provided, including a device body and the aforementioned battery pack, the battery pack being mounted on the device body and adapted to supply power to the device body.

[0033] The above technical solution allows the battery pack filling assembly to fill the gap between the battery cell group and the tray beam, so that the first side of the bracket abuts against the battery cell group and the second side of the bracket abuts against the partition. The partition and the tray beam together define the injection space, and the adhesive is injected into the injection space. Utilizing the fluidity of the adhesive, the injection space is fully filled. After solidification, the adhesive provides good support for the battery cell group. Therefore, using the battery pack filling assembly provided in this application, the gap between the battery cell group and the tray beam of different battery packs can be filled, as well as the gap between the battery cell group and the tray beam at different locations within the same battery pack, providing good support for the battery cell group.

[0034] Furthermore, since the glue injection space is confined between the partition and the tray beam, it can effectively prevent the glue from contacting the battery cell assembly, thereby avoiding the glue's impact on the battery cell assembly.

[0035] Furthermore, since the bracket is equipped with a glue injection hole, and the glue injection hole is connected to the glue injection space through the glue inlet, when injecting glue into the glue injection space, the glue injection nozzle of the glue injection device can be stuck on the glue injection hole (such as partially inserting the glue injection nozzle into the glue injection hole), and glue can be injected into the glue injection space through the glue injection hole. On the one hand, this can prevent the glue injection nozzle from shaking during the glue injection process and injecting glue outside the glue injection space. On the other hand, even if the gap between the cell assembly and the tray beam is too small, that is, the gap between the partition and the tray beam is too small, the glue injection nozzle can still inject glue into the glue injection space.

[0036] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0037] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 is a top view schematic diagram of a battery pack provided in one embodiment of the present disclosure.

[0039] Figure 2 is a partial cross-sectional schematic diagram of a battery pack provided in one embodiment of the present disclosure.

[0040] Figure 3 is a three-dimensional structural diagram of a battery pack filling assembly provided in an exploded state according to an embodiment of the present disclosure.

[0041] Figure 4 is a partial cross-sectional schematic diagram of a battery pack from another perspective according to one embodiment of the present disclosure.

[0042] Figure 5 is a magnified view of part A in Figure 4.

[0043] Figure 6 is a schematic structural block diagram of an electrical device provided in one embodiment of this disclosure. Detailed Implementation

[0044] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0045] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally defined according to the drawing orientation of the corresponding figures, and are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or a specific orientation construction and operation, and therefore should not be construed as a limitation of this disclosure. "Inner" and "outer" refer to the inner and outer contours of the corresponding components. In addition, the terms "first," "second," etc., are used to distinguish one element from another and do not have sequential or importance implications.

[0046] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connect," "link," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0047] As mentioned above, the filling effect of the gap between the cell pack and the tray beam in the relevant technology is not ideal. This is mainly because there are errors in the manufacturing and assembly of various components of the battery pack, which results in the gap size between different battery packs and cell packs in different positions within the battery pack and the tray beam is not fixed.

[0048] In view of this, as shown in Figures 1 to 5, according to a first aspect of the present disclosure, a battery pack filling assembly 1 is provided. The battery pack filling assembly 1 is adapted to fill the gap between the cell group 3 of the battery pack 2 and the beam 5 of the tray of the battery pack 2. The battery pack filling assembly 1 includes a support 10 and a partition 20. The support 10 and the partition 20 are adapted to be arranged sequentially along the direction from the cell group 3 to the beam 5 of the tray. The partition 20 is adapted to define, together with the beam 5 of the tray, an injection space 30 suitable for accommodating colloid 50. The support 10 has a first side 11 and a second side 12 opposite to each other. The first side 11 is adapted to abut against the cell group 3, and the second side 12 abuts against the partition 20. The support 10 is provided with an injection hole 13, and the partition 20 is provided with an inlet 21. The injection hole 13 communicates with the injection space 30 through the inlet 21.

[0049] Through the above technical solution, the battery pack filling component 1 can be filled into 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 against the cell group 3 and the second side 12 of the bracket 10 abuts against the partition 20. The partition 20 and the beam 5 of the tray together define the injection space 30, and the glue 50 is injected into the injection space 30. Utilizing the fluidity of the glue 50, the glue 50 can fully fill the injection space 30. After the glue 50 solidifies, it can provide good support for the cell group 3. Therefore, by using the battery pack filling component 1 provided in this application, the gap between the cell group 3 of different battery packs 2 and the beam 5 of the tray can be filled, and the gap between the cell group 3 at different positions in the same battery pack 2 and the beam 5 of the tray can also be filled, and the cell group 3 can be well supported.

[0050] Furthermore, since the glue injection space 30 is confined between the partition 20 and the beam 5 of the tray, it is possible to effectively prevent the glue 50 from contacting the battery cell assembly 3, thereby avoiding the influence of the glue 50 on the battery cell assembly 3.

[0051] Furthermore, since the bracket 10 is provided with a glue injection hole 13, and the glue injection hole 13 is connected to 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 device 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 can be injected into the glue injection space 30 through the glue injection hole 13. On the one hand, this can prevent the glue injection nozzle from shaking during the glue injection process and injecting the glue 50 outside the glue injection space 30. On the other hand, even if the gap between the battery cell assembly 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.

[0052] To reduce the resistance of colloid 50 being injected into the injection space 30, optionally, as shown in Figures 3 and 5, the bracket 10 can be provided with a pressure-reducing channel 14. The pressure-reducing channel 14 connects the injection hole 13 and the inlet 21. The pressure-reducing channel 14 can reduce the pressure of colloid 50 from the injection hole 13, preventing colloid 50 from overflowing from the outlet 132 of the injection hole and being unable to flow freely. This greatly reduces the resistance of colloid 50 flowing from the injection hole 13 to the inlet 21, thereby reducing the resistance of colloid 50 being injected into the injection space 30. This prevents excessive pressure from affecting the injection effect and the safety of the injection equipment. Furthermore, it also helps to increase the injection speed of colloid into the injection space 30 through the injection hole 13.

[0053] Optionally, as shown in Figure 5, the inlet 141 of the pressure reducing channel can be connected to the outlet 132 of the glue injection hole. The area of ​​the inlet 141 of the pressure reducing channel can be larger than the area of ​​the outlet 132 of the glue injection hole. This helps to reduce the resistance encountered by the colloid 50 flowing from the glue injection hole 13 into the pressure reducing channel 14.

[0054] The pressure-reducing channel 14 can be configured in any suitable form, and this disclosure does not limit it. As one embodiment, as shown in Figures 3 and 5, the cross-section at the inlet 141 of the pressure-reducing channel can be the cross-section with the smallest area among all cross-sections cut along the extension direction of the pressure-reducing channel 14 perpendicular to the extension direction of the pressure-reducing channel 14. That is, the flow area at the inlet 141 of the pressure-reducing channel is the place with the smallest flow area in the entire pressure-reducing channel 14, which helps to ensure that the resistance encountered by the colloid 50 in the flow within the pressure-reducing channel 14 is less than the resistance encountered by the colloid 50 in the flow within the injection hole 13.

[0055] In another implementation, the pressure relief channel 14 may include multiple sub-channels, the inlets of which are all connected to the outlet 132 of the glue injection hole, the outlets of which are all connected to the glue inlet 21, and the sum of the areas of the smallest cross-section among all cross-sections of the multiple sub-channels along their extension direction perpendicular to themselves is greater than the area of ​​the outlet 132 of the glue injection hole.

[0056] The pressure relief channel 14 can also be configured with any suitable shape, and this disclosure does not limit it. As one embodiment, as shown in Figures 3 and 5, the cross-sectional area of ​​the pressure relief channel 14 can be gradually increased along the direction from the inlet 141 of the pressure relief channel to the outlet 142 of the pressure relief channel, so that the resistance of the colloid 50 gradually decreases during the flow of the pressure relief channel 14.

[0057] As another implementation, the cross-sectional area of ​​the pressure-reducing channel 14 can be equal everywhere along the direction from the inlet 141 to the outlet 142 of the pressure-reducing channel, or the variation of the cross-sectional area of ​​the pressure-reducing channel 14 can be irregular.

[0058] To ensure the effect of the injection channel in reducing injection resistance, as an implementation method, as shown in Figure 5, the projection of the outlet 142 of the pressure reducing channel on the partition 20 along the direction perpendicular to the partition 20 can be located in the area where the inlet 21 is located, so that the inlet 21 will not block the outlet 142 of the pressure reducing channel, thereby ensuring the effect of the injection channel in reducing injection resistance.

[0059] To ensure that the colloid 50 is filled more evenly in the injection space 30, as one embodiment, as shown in FIG3, the injection hole 13 can be located in the middle of the length direction of the support 10 (in the middle of the left-right direction of the figure in FIG3), so that the inlet 21 can be located in the middle of the length direction of the partition 20. This facilitates the injection of the colloid 50 from a position close to the middle of the injection space 30 into other positions of the injection space 30, thereby allowing the colloid 50 to flow evenly to both ends of the length direction of the injection space 30, which in turn facilitates the more even filling of the colloid 50 in the injection space 30.

[0060] To reduce the weight of the bracket 10, as shown in FIG3, the second side 12 is provided with reinforcing ribs 15 arranged in a honeycomb pattern. By providing reinforcing ribs 15 arranged in a honeycomb pattern on the second side 12, the thickness of the bracket 10 can be increased while ensuring sufficient strength, thereby reducing the weight and cost of the bracket 10. This, in turn, helps to reduce the weight and cost of the battery pack filling assembly 1.

[0061] Because the colloid 50 is viscous, its liquid surface forms an arc as it rises within the injection space 30 (i.e., the height of the liquid surface varies at different points). To ensure the colloid 50 more fully fills the injection space 30, as shown in Figure 3, the support 10 is provided with an overflow cavity 16, which is adapted to communicate with the upper part of the injection space 30. During the injection process, the colloid 50 that rises to the upper part of the injection space 30 can flow into the overflow cavity 16. This ensures that the colloid 50 does not overflow into the battery pack filling assembly 1, while allowing the colloid 50 at all points within the injection space 30 to rise to the upper part of the injection space 30, thereby enabling the colloid 50 to more fully fill the injection space 30.

[0062] This disclosure does not limit the formation of the overflow cavity 16. As one embodiment, as shown in FIG3, a protrusion 17 is provided on the second side 12. The protrusion 17 is adapted to enclose the overflow cavity 16. That is, the area enclosed by the protrusion 17 can jointly define the overflow cavity 16 with the partition 20.

[0063] In another embodiment, the second side 12 is formed with a cavity, which together with the partition 20 defines the overflow cavity 16.

[0064] In order to enable the overflow cavity 16 to communicate with the upper part of the glue injection space 30, as an embodiment, as shown in FIG3, the partition 20 is provided with an overflow port 22, and the overflow cavity 16 communicates with the upper part of the glue injection space 30 through the overflow port 22.

[0065] Optionally, the overflow outlet 22 can be a notch located at the upper end of the partition 20, or it can be a passage surrounded on all four sides.

[0066] As another implementation, the adhesive 50 in the injection space 30 can flow through the upper end of the partition 20 into the overflow cavity 16.

[0067] Optionally, as shown in Figure 3, the bracket 10 is provided with a mounting structure 18 suitable for accommodating components related to the battery cell assembly 3 (such as sensors, wiring harnesses connected to the battery cells, etc.). By accommodating the components related to the battery cell assembly 3 through the mounting structure 18, the gap between the battery cell assembly 3 and the beam 5 of the tray is fully utilized, which also helps to improve the neatness of the inside of the battery pack 2.

[0068] The mounting structure 18 can be configured in any suitable way depending on the components to be accommodated, and this disclosure does not limit it. As one embodiment, the mounting structure 18 includes a wiring trough 180 suitable for laying wire harnesses.

[0069] As an optional embodiment of this disclosure, as shown in FIG3, the wiring groove 180 includes a first wiring groove 181 extending along the length direction of the bracket 10, and the first wiring groove 181 is disposed at the upper end of the bracket 10.

[0070] The first wiring groove 181 allows the upper end of the bracket 10 to accommodate a wire harness arranged along the length of the bracket 10 and located at the upper end of the bracket 10.

[0071] As another alternative embodiment of this disclosure, as shown in FIG3, the wiring groove 180 includes a second wiring groove 182 extending along the length direction of the bracket 10, and the second wiring groove 182 is disposed on the second side 12 and located in the middle of the height direction of the bracket 10.

[0072] The second wiring groove 182 allows the second side 12 of the bracket 10 to accommodate a wire harness that is arranged along the length of the bracket 10 and located in the middle of the height of the bracket 10.

[0073] In this disclosure, the mounting structure 18 can also be configured as a structure capable of accommodating the sensor, such as a groove.

[0074] To prevent the colloid 50 from flowing outside the injection space 30, as one embodiment, as shown in Figures 3 and 5, the battery pack filling assembly 1 further includes a seal 40, which is adapted to be sandwiched between the separator 20 and the beam 5 of the tray, and the seal 40, together with the separator 20 and the beam 5 of the tray, defines the injection space 30.

[0075] By setting the sealing element 40, on the one hand, the sealing performance of the glue injection space 30 can be improved, preventing the glue 50 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 defined, which is beneficial to saving glue 50.

[0076] This disclosure does not limit the shape of the sealing element 40. As one embodiment, as shown in FIG3, the sealing element 40 is constructed as an annular member with a partial opening 44 at the upper end. During the process of injecting adhesive into the injection space 30, air in the injection space 30 can be discharged through the opening 44, allowing the adhesive 50 to be more fully filled into the injection space 30. In addition, the operator can observe the adhesive injection situation in the injection space 30 through the opening 44.

[0077] Optionally, as shown in FIG3, the seal 40 may include a first segment 41 and two second segments 42, the first ends 421 of the two second segments 42 being connected to opposite ends of the first segment 41 respectively, and the second ends 422 of the two second segments being spaced apart, wherein the two second segments 42 are angled relative to the first segment 41. The seal 40 may also include a third segment 43, which is located above the first segment 41, and the opposite ends of the third segment 43 are spaced apart from the second ends 422 of the two second segments respectively. The opening 44 is located at the interval between the two ends of the third segment 43 and the second ends 422 of the two second segments.

[0078] Since the opening 44 is located at the interval between the two ends of the third segment 43 and the second ends 422 of the two second segments, that is, the vent of the glue injection space 30 is located at both ends of the length direction of the glue injection space 30, the venting resistance of the glue 50 on both sides of the glue injection space 30 is the same, so that the glue 50 is filled more evenly in the glue injection space 30.

[0079] Regarding the embodiment mentioned above where the injection hole 13 is located in the middle of the length direction of the support 10, since the liquid level of the colloid 50 is higher near the middle of the length direction of the injection space 30, the vent at the upper end of the injection space 30 is located at both ends of the length direction of the injection space 30. The highest point of the liquid level of the colloid 50 will first contact the third segment 43, and then be pushed aside to both sides by the obstruction of the third segment 43, so that the lowest point of the liquid level of the colloid 50 will finally rise to the vent of the injection space 30, which is conducive to the full filling of the injection space 30 with the colloid 50.

[0080] In addition, since the colloid 50 has a certain flow rate and pressure during the injection process into the injection space 30, the third section 43 can block the colloid 50 from splashing out of the injection space 30, which can not only reduce the waste of colloid 50, but also prevent colloid 50 from contaminating the inside of the battery pack 2.

[0081] In order to enable the sealant 40 to provide a good seal for the glue injection space 30, as one embodiment, the sealant 40 can be an elastic member. The sealant 40 is configured to be in a compressed state when it is assembled between the battery cell assembly 3 and the tray beam 5, so that the sealant 40 can fit more tightly with the partition 20 and the tray beam 5, thereby facilitating the sealant 40 to provide a good seal for the glue injection space 30.

[0082] Optionally, the seal 40 can be vacuum-compressed foam, making it easier for the battery pack filling assembly 1 provided in this application to be inserted into the gap between the cell assembly 3 and the tray beam 5. After the battery pack filling assembly 1 is inserted into the gap, the vacuum bag is punctured, causing the foam to expand and fit against the separator 20 and the tray beam 5, and together define the glue injection space 30.

[0083] Optionally, the battery pack 2 may include an adhesive 50 located within the adhesive injection space 30.

[0084] According to a second aspect of this disclosure, a battery pack 2 is provided, including a tray 4, a cell assembly 3, and the aforementioned battery pack filling assembly 1.

[0085] The battery cell assembly 3 is arranged within the cavity 60 of the tray 4.

[0086] The battery pack filling assembly 1 fills the gap between the cell assembly 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; this disclosure does not limit this to either.

[0087] According to a third aspect of this disclosure, an electrical device 100 is provided, including a device body 101 and the aforementioned battery pack 2, wherein the battery pack 2 is installed in the device body 101 and is adapted to supply power to the device body 101.

[0088] Here, electrical equipment 100 can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This disclosure does not limit the scope of these.

[0089] Optionally, when the electrical device 100 is a vehicle, the battery pack can be installed on the vehicle body.

[0090] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0091] 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, this disclosure will not describe the various possible combinations separately.

[0092] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A battery pack filling assembly (1) characterized by, The battery pack filling assembly (1) is adapted to fill into the gap between the cell group (3) of a battery pack (2) and the beam (5) of the tray of the battery pack (2), and the battery pack filling assembly (1) comprises: a bracket (10) having opposite first and second sides (11, 12), the first side (11) being adapted to abut against the cell group (3), the bracket (10) being provided with a glue injection hole (13); a partition plate (20) against which the second side (12) abuts, the partition plate (20) being provided with a glue inlet (21); wherein the bracket (10) and the partition plate (20) are adapted to be arranged in sequence in the direction from the cell group (3) to the beam (5) of the tray, and the partition plate (20) is adapted to define, together with the beam (5) of the tray, a glue injection space (30) adapted to accommodate glue (50), and the glue injection hole (13) communicates with the glue injection space (30) through the glue inlet (21).

2. The battery pack filling assembly (1) according to claim 1, characterized in that, The bracket (10) is provided with a pressure reduction channel (14) communicating the glue injection hole (13) with the glue inlet (21).

3. The battery pack filling assembly (1) according to claim 2, characterized in that, The inlet (141) of the pressure reduction channel communicates with the outlet (132) of the glue injection hole, and the area of the inlet (141) of the pressure reduction channel is greater than the area of the outlet (132) of the glue injection hole.

4. The battery pack filling assembly (1) according to claim 3, characterized in that The cross section where the inlet (141) of the pressure reduction channel is located is the cross section with the smallest area among all cross sections of the pressure reduction channel (14) taken along a direction perpendicular to the extension direction of the pressure reduction channel (14).

5. The battery pack filling assembly (1) according to any one of claims 2-4, characterized in that, In the direction from the inlet (141) of the pressure reduction channel to the outlet (142) of the pressure reduction channel, the area of the cross section of the pressure reduction channel (14) gradually increases.

6. The battery pack filling assembly (1) according to any one of claims 2-5, characterized in that, In a direction perpendicular to the partition plate (20), the projection of the outlet (142) of the pressure reduction channel on the partition plate (20) is located in the area where the glue inlet (21) is located.

7. The battery pack filling assembly (1 ) according to any one of claims 1 -6, characterized in that, The glue injection hole (13) is located in the middle of the length direction of the bracket (10).

8. The battery pack filling assembly (1) according to any one of claims 1-7, characterized in that, The second side (12) is provided with reinforcing ribs (15) arranged in a honeycomb shape.

9. The battery pack filling assembly (1 ) according to any of claims 1 -8, characterized in that, The bracket (10) is provided with a glue overflow cavity (16) adapted to communicate with the upper part of the glue injection space (30).

10. The battery pack filling assembly (1) according to claim 9, characterized in that The second side (12) is provided with a protruding portion (17) adapted to enclose the glue overflow cavity (16).

11. The battery pack filling assembly (1) according to claim 9 or 10, characterized in that The partition plate (20) is provided with a glue overflow port (22), and the glue overflow cavity (16) communicates with the upper part of the glue injection space (30) through the glue overflow port (22).

12. The battery pack filling assembly (1 ) according to any one of claims 1 -1 1, characterized in that, The bracket (10) is provided with a mounting structure (18) adapted to accommodate components related to the cell group (3).

13. The battery pack filling assembly (1) according to claim 12, characterized in that The mounting structure (18) comprises a wiring groove (180) adapted to arrange wiring harnesses.

14. The battery pack filling assembly (1) according to claim 13, characterized in that, The wiring groove (180) comprises a first wiring groove (181) extending through the length direction of the bracket (10), and the first wiring groove (181) is arranged at the upper end of the bracket (10).

15. The battery pack filling assembly (1) according to claim 13 or 14, characterized in that, The wiring slot (180) comprises a second wiring slot (182) extending along the length direction of the bracket (10), and the second wiring slot (182) is arranged on the second side (12) and located at the middle part in the height direction of the bracket (10).

16. The battery pack filling assembly (1 ) according to any one of claims 1 - 15, characterized in that, The battery pack filling assembly (1) further comprises a sealing member (40) adapted to be clamped between the partition plate (20) and the beam (5) of the tray, and the sealing member (40) can cooperatively define a glue injection space (30) with the partition plate (20) and the beam (5) of the tray.

17. The battery pack filling assembly (1) according to claim 16, characterized in that The sealing member (40) is configured as an annular member with an opening (44) at the upper end.

18. The battery pack filling assembly (1) according to claim 17, characterized in that The sealing member (40) comprises a first segment (41) and two second segments (42), the first ends (421) of the two second segments are respectively connected to the opposite ends of the first segment (41), and the second ends (422) of the two second segments are spaced apart, wherein the two second segments (42) are arranged at an angle with the first segment (41). The sealing member (40) further comprises a third segment (43) located above the first segment (41), and the opposite ends of the third segment (43) are respectively arranged at intervals with the second ends (422) of the two second segments, and the opening (44) is located at the interval between the two ends of the third segment (43) and the second ends (422) of the two second segments.

19. The battery pack filling assembly (1 ) according to any one of claims 1 - 18, characterized in that, The battery pack (2) comprises a glue body (50) located in the glue injection space (30).

20. A battery pack (2) characterized by The battery pack (2) comprises a tray (4), a cell group (3) and the battery pack filling assembly (1) according to any one of claims 1-19. The cell group (3) is arranged in the cavity (60) of the tray (4). The battery pack filling assembly (1) is filled in the gap between the cell group (3) and the beam (5) of the tray.

21. An electrical consumer (100), characterized in that The device body (101) and the battery pack (2) according to claim 20, wherein the battery pack (2) is installed on the device body (101) and is adapted to supply power to the device body (101).

Images