battery pack

Abstract

This application relates to a battery pack, specifically in the field of battery technology. The battery pack includes a housing, multiple battery packs, and a fixing assembly. The multiple battery packs are housed within the housing. The fixing assembly includes a separator and a pressing member. At least a portion of the separator is positioned between two adjacent battery packs. The pressing member is detachably connected to the separator and presses against the top or bottom wall of two adjacent battery packs. This battery pack can improve the problem of the fixing assembly easily getting stuck and causing installation difficulties during installation, thus improving installation efficiency.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery pack. Background Technology

[0002] CTP (Cell-to-Pack) is a commonly used method for assembling battery cells into battery packs, eliminating the need for intermediate modules. In module-less battery pack solutions, multiple cells within the pack form different battery modules. In practical applications, a fixing strip is used to press against adjacent battery modules, securing the cells within each module. However, in related technologies, the fixing strip is a single, integrated structure. During installation, the strip's positioning in both the width and height directions of adjacent battery modules (it needs to abut against the top wall of the battery module) must be considered, which can easily lead to installation jamming and difficulties, affecting installation efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, embodiments of this application provide a battery pack that can improve the installation efficiency by reducing the likelihood of the fixing components getting stuck or causing installation difficulties.

[0004] In a first aspect, a battery pack is provided, comprising:

[0005] Box;

[0006] Multiple battery packs are housed inside the casing;

[0007] A fixing component includes a partition and a pressing member, at least a portion of the partition being disposed between two adjacent battery packs, the pressing member being detachably connected to the partition and pressing against the top or bottom wall of the two adjacent battery packs.

[0008] According to a first aspect of this application, the partition plate is provided with a plurality of slots on the side near the pressing member;

[0009] The pressing component includes:

[0010] A pressure plate presses against the top or bottom wall of two adjacent sets of the battery packs;

[0011] Multiple buckles are provided on the side of the pressure plate near the partition; wherein, the multiple buckles are engaged with the multiple slots one by one.

[0012] According to a first aspect of this application, the pressure plate is provided with a protrusion on the side near the partition, and the protrusion is embedded between two adjacent sets of battery packs;

[0013] Among them, multiple of the buckles are provided on the protruding strip.

[0014] According to a first aspect of this application, the card slot includes a first slot segment and a second slot segment that are interconnected, wherein the width of the second slot segment is greater than the width of the first slot segment;

[0015] The buckle includes:

[0016] A connector is attached to the side of the pressure plate closest to the partition.

[0017] A protrusion is provided at the end of the connector away from the pressure plate, and the protrusion protrudes relative to the side wall of the connector;

[0018] The connector is embedded in the first groove and the second groove, and the protrusion is engaged with the second groove.

[0019] According to a first aspect of this application, the width direction of the second groove segment and the protrusion direction of the protrusion are both the same as a preset direction; wherein, the preset direction represents the length direction of the battery pack; or,

[0020] The width direction of the second groove segment and the protrusion direction of the protrusion are both perpendicular to a preset direction; wherein, the preset direction represents the length direction of the battery pack.

[0021] According to a first aspect of this application, a first adhesive layer is provided between the pressure plate and the top or bottom wall of the battery pack, and the pressure plate and the top or bottom wall of the battery pack are respectively bonded to opposite sides of the first adhesive layer;

[0022] The pressure plate has a protrusion and / or groove on the side near the first adhesive layer.

[0023] According to a first aspect of this application, the partition is provided with the pressing member on both sides, wherein the pressing member on one side abuts against the top wall of the battery pack, and the pressing member on the other side abuts against the bottom wall of the battery pack.

[0024] According to a first aspect of this application, the partition includes:

[0025] The first plate is disposed between two adjacent sets of the battery packs;

[0026] The second plate is connected to the first plate;

[0027] The second plate abuts against one of the top and bottom walls of the battery pack, and the pressing member abuts against the other of the top and bottom walls of the battery pack.

[0028] According to a first aspect of this application, the first plate and the second plate are configured in a T-shape, with the second plate pressing against the top or bottom wall of two adjacent battery packs; or...

[0029] The first plate and the second plate are constructed in an L-shape, with the second plate pressing against the top or bottom wall of one of the battery packs.

[0030] According to a first aspect of this application, the partition is provided with a plurality of cooling channels, and the plurality of cooling channels are distributed along the height direction of the battery pack.

[0031] The battery pack provided in this application embodiment is detachably connected by a separator and a retaining member, which can achieve the effect of separate installation of the separator and the retaining member in different processes. When assembling the separator, the positioning of the separator in the width direction of the battery pack can be considered, so that the separator can be assembled between two adjacent battery packs. When assembling the retaining member, the positioning of the retaining member in the height direction of the battery pack can be considered, so that the retaining member can be pressed against the top or bottom wall of the battery pack. In this way, when assembling the separator and the retaining member separately, it is not necessary to consider the positioning in two directions at the same time, the installation process is smoother, and it is not easy to get stuck during installation, which can effectively improve the installation efficiency of the fixing components. Attached Figure Description

[0032] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0033] Figure 1 This is a schematic diagram of the structure of a battery pack provided for an exemplary embodiment of this application.

[0034] Figure 2 This is a schematic diagram of the structure of two adjacent battery packs and fixing components provided for an exemplary embodiment of this application.

[0035] Figure 3 An exploded view of a fixing component provided for an exemplary embodiment of this application.

[0036] Figure 4 This is a schematic diagram of the structure of a pressing member provided for an exemplary embodiment of this application.

[0037] Figure 5 for Figure 3 Enlarged diagram of point A in the middle.

[0038] Figure 6 for Figure 4 Enlarged diagram of point B in the middle.

[0039] Figure 7 A schematic diagram of the structure of a fixing component provided for another exemplary embodiment of this application.

[0040] Figure 8 A schematic diagram of the structure of a pressing member provided for another exemplary embodiment of this application.

[0041] Figure 9 for Figure 7 Enlarged diagram of point C in the middle.

[0042] Figure 10 for Figure 8 Enlarged diagram of point D in the middle.

[0043] Figure 11 This is a partial schematic diagram of a pressing member provided for an exemplary embodiment of this application.

[0044] Figure 12 A schematic diagram of the structure of the fixing component and battery pack provided for another exemplary embodiment of this application.

[0045] Figure 13 A schematic diagram of the structure of the fixing component and battery pack provided for another exemplary embodiment of this application.

[0046] Figure 14 A schematic diagram of the structure of the fixing component and battery pack provided for another exemplary embodiment of this application.

[0047] Figure 15 A schematic diagram of the structure of a battery pack provided for another exemplary embodiment of this application.

[0048] Figure 16 A schematic diagram of the structure of a fixing component provided for another exemplary embodiment of this application.

[0049] Figure 17 This is a schematic diagram of the structure of the partition and the second adhesive layer provided in an exemplary embodiment of this application.

[0050] Reference numerals: 100-Battery pack; 110-Box; 120-Battery assembly; 130-Fixing component; 131-Separator; 1311-First plate; 1312-Second plate; 1313-Cooling channel; 132-Pressure member; 1321-Pressure plate; 1322-Snap fastener; 13221-Connector; 13222-Protrusion; 1323-Protrusion; 1324-Protrusion; 1325-Groove; 133-Slot; 1331-First groove segment; 1332-Second groove segment; 134-First adhesive layer; 135-Second adhesive layer; 140-Cooling component. Detailed Implementation

[0051] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0052] Figure 1 This is a schematic diagram of the structure of a battery pack provided for an exemplary embodiment of this application. Figure 1 As shown, the battery pack 100 provided in this application embodiment may include a housing 110 and multiple battery packs 120. The multiple battery packs 120 are housed in the housing 110. Each battery pack 120 typically includes multiple battery cells. The multiple battery cells are connected in series or in parallel to form a battery pack 120. The multiple battery packs 120 can work together to achieve discharge and charging operations.

[0053] Figure 2 This is a schematic diagram of the structure of two adjacent battery packs and fixing components provided for an exemplary embodiment of this application. Figure 1 and Figure 2 As shown, the battery pack 100 may further include a fixing component 130, which may include a separator 131. At least a portion of the separator 131 is disposed between two adjacent battery packs 120. The separator 131 can separate the two adjacent battery packs 120 from each other. On the one hand, the separator 131 prevents the two adjacent battery packs 120 from directly contacting each other, avoiding short circuit problems; on the other hand, the separator 131 can prevent the two adjacent battery packs 120 from colliding with each other, thus providing a certain degree of protection for the battery packs 120.

[0054] In one embodiment, the partition 131 may be made of insulating materials such as PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer), PA (polyamide).

[0055] In one embodiment, the partition 131 may also be made of metal materials such as aluminum or copper, and an insulating layer may be applied to the surface of the partition 131.

[0056] like Figure 2 As shown, the fixing assembly 130 may further include a pressing member 132, which is detachably connected to the partition 131. The pressing member 132 presses against the top or bottom wall of two adjacent battery packs 120. The pressing member 132 presses against the battery pack 120 in the height direction of the battery pack 120 (reference). Figure 2 Limit the movement along the Z-axis direction.

[0057] It should be noted that after the pressing member 132 is assembled on the separator 131, the pressing member 132 can apply a pressing force to the two adjacent battery packs 120, which can fix the two adjacent battery packs 120 together to form a whole. In this way, the overall rigidity of the two adjacent battery packs 120 is effectively improved, the overall vibration and impact resistance of the battery pack 100 is enhanced, and the risk of cracking of the components inside the battery pack 120 is reduced.

[0058] It should be noted that, in the actual assembly process, the separator 131 can be inserted between two adjacent battery packs 120 first, and then the pressing member 132 can be assembled on the pressing member 132. That is to say, the separator 131 and the pressing member 132 can be assembled as two components in different processes.

[0059] It should be understood that, compared to the integrated structure of the fixing strip in related technologies, the battery pack 100 provided in this application embodiment is detachably connected by the separator 131 and the pressing member 132, which can achieve the effect of separate installation of the separator 131 and the pressing member 132 in different processes; specifically, when assembling the separator 131, the width direction of the separator 131 in the battery pack 120 is considered (see reference for details). Figure 2 Positioning the separator 131 along the X-axis (as shown in the image) allows it to be assembled between two adjacent battery packs 120. When assembling the retaining member 132, consider its position along the height of the battery pack 120 (see reference for details). Figure 2 Positioning on the Z-axis direction allows the pressing member 132 to be pressed against the top or bottom wall of the battery pack 120. This way, when assembling the separator 131 and the pressing member 132 respectively, it is not necessary to consider the positioning in both directions at the same time, making the installation process smoother and less prone to jamming. This can effectively improve the installation efficiency of the fixing component 130.

[0060] In one embodiment, the pressing member 132 and the partition 131 can be detachably connected through a slot and a snap-fit ​​structure.

[0061] In one embodiment, the collateral and the partition 131 can be detachably connected by fasteners such as bolts and studs.

[0062] In one embodiment, the pressing member 132 can be made of plastic materials such as PA (nylon) and PBT (polybutylene terephthalate). These plastic materials have certain tensile properties, low density, and high insulation performance, which can improve the energy density and electrical safety of the battery pack 100, and the cost is relatively lower than that of metal materials.

[0063] In one embodiment, the pressing member 132 can be made of metal materials such as aluminum or stainless steel. Metal materials have higher yield strength and tensile strength, and the shear strength of the metal material after bonding with the first adhesive layer 134 (described later) is higher, which is beneficial to improving the overall rigidity and strength of the battery pack 100. In addition, metal materials have a high thermal conductivity, which can efficiently transfer heat, improve the heat exchange efficiency between the pressing member 132 and the battery pack 120, improve the problem of uneven temperature between adjacent battery packs 120, and improve the temperature consistency between adjacent battery packs 120.

[0064] Figure 3 An exploded view of a fixing component provided for an exemplary embodiment of this application. Figure 3 As shown, the partition 131 has multiple slots 133 on the side near the pressing member 132. The pressing member 132 may include a pressure plate 1321 and multiple buckles 1322, with the multiple buckles 1322 located on the side of the pressure plate 1321 near the partition 131.

[0065] Specifically, in the actual assembly process, the pressure plate 1321 can be used to press against the top or bottom wall of two adjacent battery packs 120, and multiple buckles 1322 can be engaged with multiple slots 133 one by one to assemble and fix the pressing part 132 and the partition 131.

[0066] It should be noted that by utilizing the snap-fit ​​structure of the buckle 1322 and the slot 133, the pressing part 132 and the partition 131 can be quickly assembled and disassembled, thereby improving the installation efficiency between the pressing part 132 and the partition 131.

[0067] It should be noted that the multiple buckles 1322 and multiple slots 133 are engaged one-to-one, which can improve the assembly stability between the pressing part 132 and the separator 131, so that the pressure plate 1321 can maintain the pressing effect on the battery pack 120 for a long time, thereby more effectively fixing the two adjacent battery packs 120.

[0068] like Figure 3 As shown, the pressure plate 1321 has a protrusion 1323 on the side near the partition 131, and multiple clips 1322 are provided on the protrusion 1323. During assembly, the protrusion 1323 is embedded between two adjacent battery packs 120. In this way, the limiting position between the protrusion 1323 and the battery pack 120 can restrict the displacement of the pressure plate 1321 during installation, and can facilitate the alignment of the multiple clips 1322 with the multiple slots 133, thereby improving the snapping accuracy and snapping efficiency between the clips 1322 and the slots 133.

[0069] In one embodiment, the buckle 1322 is located at the end of the protrusion 1323 away from the pressure plate 1321, and the slot 133 is located at the end of the partition 131 near the protrusion 1323. After the protrusion 1323 extends between two adjacent battery packs 120, the buckle 1322 and the slot 133 can more easily engage with each other.

[0070] In one embodiment, the protrusion 1323 is arranged perpendicularly to the pressure plate 1321, which can be adapted to the structure where the top wall (or bottom wall) and side wall of the battery pack 120 are perpendicular to each other, so that the pressure plate 1321 can press the top wall (or bottom wall) of the battery pack 120 more tightly.

[0071] In one embodiment, a plurality of snap fasteners 1322 are arranged along the length direction of the protrusion 1323 (see reference). Figure 3 Multiple slots 133 are spaced apart along the Y-axis direction of the partition 131 (same as the length direction of the protrusion 1323, see reference). Figure 3 The multiple buckles 1322 and multiple slots 133 are distributed at intervals along the Y-axis direction. In this way, after the multiple buckles 1322 and multiple slots 133 are engaged one by one, the protrusions 1323 and the partitions 131 can be relatively fixed at different parts along the Y-axis direction, which can improve the assembly stability between the protrusions 1323 and the partitions 131.

[0072] Figure 4 This is a schematic diagram of the structure of a pressing member provided for an exemplary embodiment of this application. Figure 5 for Figure 3 Enlarged diagram of point A in the middle. Figure 6 for Figure 4 An enlarged view of point B in the middle. (See diagram below.) Figures 3 to 6 As shown, the slot 133 may include a first slot segment 1331 and a second slot segment 1332 that are interconnected. Correspondingly, the buckle 1322 may include a connector 13221 and a protrusion 13222. The connector 13221 is connected to the side of the pressure plate 1321 near the partition 131, and the protrusion 13222 is located at the end of the connector 13221 away from the pressure plate 1321.

[0073] It should be noted that the protrusion 13222 protrudes from the side wall of the connector 13221 (the specific protrusion direction will be described later), and the width of the second groove 1332 is greater than the width of the first groove 1331. During assembly, the connector 13221 is embedded in the first groove 1331 and the second groove 1332, and the protrusion 13222 is engaged with the second groove 1332. This prevents the connector 13221 from detaching from the first groove 1331 and the second groove 1332, and improves the assembly stability between the buckle 1322 and the groove 133.

[0074] like Figure 5 and Figure 6As shown, the width direction of the second groove segment 1332 and the protrusion direction of the protrusion 13222 are both aligned with a preset direction (which can be understood as the length direction of the battery pack 120, see reference for details). Figures 3 to 6 (The Y-axis direction is the same).

[0075] In one embodiment, the first groove segment 1331 and the second groove segment 1332 may be along the thickness direction of the separator 131 (which is the same as the width direction of the battery pack 120, see reference). Figure 5 The X-axis direction of the plate penetrates through the partition 131. Thus, during disassembly, by moving the buckle 1322 along the thickness direction of the partition 131, the protrusion 13222 can be removed from the second groove 1332. In other words, by moving the pressure plate 1321 along the thickness direction of the partition 131, multiple buckles 1322 can be moved simultaneously to remove the corresponding grooves 133, which can effectively improve the disassembly efficiency between the pressing member 132 and the partition 131.

[0076] Figure 7 A schematic diagram of the structure of a fixing component provided for another exemplary embodiment of this application. Figure 8 A schematic diagram of the structure of a pressing member provided for another exemplary embodiment of this application. Figure 9 for Figure 7 Enlarged diagram of point C in the middle. Figure 10 for Figure 8 Enlarged diagram of point D in the middle. Figures 7 to 10 The illustrated embodiments and Figures 3 to 6 The difference in the illustrated embodiment is that the width direction of the second groove segment 1332 and the protrusion direction of the protrusion 13222 are both aligned with a preset direction (which can be understood as the length direction of the battery pack 120, see reference for details). Figures 7 to 10 The Y-axis direction is perpendicular to the width direction of the second groove segment 1332 and the protrusion direction of the protrusion 13222, respectively, which is perpendicular to the thickness direction of the partition 131 (see reference). Figure 9 (The X-axis direction is the same).

[0077] In one embodiment, the second groove segment 1332 is along the thickness direction of the partition 131 (refer to...). Figure 9 The X-axis direction of the partition 131 is penetrated through the partition 131. In this way, after the protrusion 13222 is engaged with the second groove 1332, the staff can contact and press the protrusion 13222 through the penetration between the second groove 1332 and the partition 131. This facilitates the rapid disassembly of the protrusion 13222 from the second groove 1332 and can effectively improve the disassembly efficiency.

[0078] In one embodiment, both the first groove segment 1331 and the second groove segment 1332 are cylindrical groove segments. The fact that the width of the second groove segment 1332 is greater than the width of the first groove segment 1331 can be understood as the inner diameter of the second groove segment 1332 being greater than the inner diameter of the first groove segment 1331.

[0079] like Figure 3 and Figure 7 As shown, a first adhesive layer 134 is provided between the pressure plate 1321 and the top wall (or bottom wall) of the battery pack 120, and the pressure plate 1321 and the top wall (or bottom wall) of the battery pack 120 are respectively bonded to the opposite sides of the first adhesive layer 134.

[0080] It should be understood that the first adhesive layer 134 can bond and fix the pressure plate 1321 to the battery pack 120. The pressure plate 1321 can fix two adjacent battery packs 120 into a whole through the first adhesive layer 134, which can improve the vibration resistance and impact resistance of the two adjacent battery packs 120.

[0081] like Figure 3 and Figure 7 As shown, when the pressure plate 1321 is provided with a protrusion 1323, the protrusion 1323 divides the pressure plate 1321 into two parts, and both parts are provided with a first adhesive layer 134. The first adhesive layer 134 on the two parts can be used to bond the top wall (or bottom wall) of two adjacent battery packs 120 respectively.

[0082] In one embodiment, the first adhesive layer 134 can be made of thermally conductive structural adhesive. This can both fix the pressure plate 1321 and the battery pack 120 and provide good thermal conductivity, thereby improving the heat exchange efficiency between the battery pack 120 and the pressure plate 1321 and preventing the battery pack 120 from operating at too high a temperature.

[0083] Figure 11 This is a partial schematic diagram of a pressing member provided for an exemplary embodiment of this application. (See attached diagram.) Figure 11 As shown, the pressure plate 1321 has a protrusion 1324 and / or a groove 1325 on the side near the first adhesive layer 134. In this way, the protrusion 1324 and / or the groove 1325 can increase the surface area of ​​the pressure plate 1321 near the first adhesive layer 134, thereby increasing the bonding area between the first adhesive layer 134 and the pressure plate 1321 and improving the bonding stability.

[0084] In one embodiment, a plurality of protrusions 1324 may be provided on the side of the pressure plate 1321 near the first adhesive layer 134 to increase the bonding area between the pressure plate 1321 and the first adhesive layer 134.

[0085] In one embodiment, a plurality of grooves 1325 may be provided on the side of the pressure plate 1321 near the first adhesive layer 134 to increase the bonding area between the pressure plate 1321 and the first adhesive layer 134.

[0086] In one embodiment, a plurality of protrusions 1324 and a plurality of grooves 1325 may be provided on the side of the pressure plate 1321 near the first adhesive layer 134 to increase the bonding area between the pressure plate 1321 and the first adhesive layer 134.

[0087] Figure 12 A schematic diagram of the structure of the fixing component and battery pack provided for another exemplary embodiment of this application. (See attached diagram.) Figure 12 As shown, both sides of the separator 131 are provided with abutment members 132. It should be noted that the aforementioned "both sides" of the separator 131 can be understood as the separator 131 along the height direction of the battery pack 120 (refer to...). Figure 12 The two opposite sides on the Z-axis direction.

[0088] like Figure 12 As shown, one side of the pressing member 132 abuts against the top wall of the battery pack 120, and the other side of the pressing member 132 is connected to the bottom wall of the battery pack 120. In this way, the pressing members 132 provided on opposite sides of the partition 131 can press against the battery pack 120 from different directions, thereby fixing the two adjacent battery packs 120 more firmly, making the two adjacent battery packs 120 form a more stable whole, which is conducive to further improving the vibration resistance and impact resistance of the two adjacent battery packs 120.

[0089] In one embodiment, the separator 131 is provided with slots 133 on both sides of the battery pack 120 along the height direction. The pressing members 132 on both sides of the separator 131 are T-shaped structures. The pressing member 132 is provided with a buckle 1322 on the side of the pressing member 132 near the separator 131. A part of the pressing member 132 extends into the space between two adjacent battery packs 120, so that the buckle 1322 engages with the slot 133.

[0090] Figure 13 A schematic diagram of the structure of the fixing component and battery pack provided for another exemplary embodiment of this application. (See attached diagram.) Figure 13 As shown, the partition 131 may include a first plate 1311 and a second plate 1312. The first plate 1311 is disposed between two adjacent battery packs 120, and the second plate 1312 is connected to the first plate 1311.

[0091] In practical applications, when the pressing member 132 presses against the top wall of the battery pack 120, the second plate 1312 can press against the bottom wall of the battery pack 120. Thus, under the combined pressing action of the pressing member 132 and the second plate 1312, adjacent battery packs 120 can be more securely fixed into a single unit. Similarly, when the pressing member 132 presses against the bottom wall of the battery pack 120, the second plate 1312 can press against the top wall of the battery pack 120, thereby also more securely fixing adjacent battery packs 120 into a single unit.

[0092] like Figure 13 As shown, the first plate 1311 and the second plate 1312 are constructed in an L-shape. In two adjacent battery packs 120, the second plate 1312 can be used to press against the top or bottom wall of one of the battery packs 120, which can provide a better fixing effect for the pressed battery pack 120.

[0093] Figure 14 A schematic diagram of the structure of the fixing component and battery pack provided for another exemplary embodiment of this application. Figure 14 The illustrated embodiments and Figure 13 The difference in the embodiment shown is that the first plate 1311 and the second plate 1312 are constructed in a T-shape. The second plate 1312 can press against the top wall (or bottom wall) of the two adjacent battery packs 120, thus providing a better fixing effect for the two pressed battery packs 120.

[0094] Figure 15 A schematic diagram of the structure of a battery pack provided for another exemplary embodiment of this application. (See diagram below.) Figure 15 As shown, the battery pack 100 may also include a cooling assembly 140, which can be used to cool the battery pack 120 and prevent the battery pack 120 from operating at an excessively high temperature.

[0095] Figure 16 A schematic diagram of the structure of a fixing component provided for another exemplary embodiment of this application. (See diagram below.) Figure 15 and Figure 16 As shown, a cooling channel 1313 is provided in the partition 131. The cooling channel 1313 is connected to the cooling assembly 140, and the coolant output by the cooling assembly 140 can flow through the cooling channel 1313.

[0096] In practical applications, the separator 131 is in contact with the side wall of the battery pack 120. The heat generated by the battery pack 120 can be transferred to the separator 131, while the coolant in the cooling channel 1313 can absorb the heat from the separator 131. That is, by introducing coolant into the cooling channel 1313, the operating temperature of the battery pack 120 can be reduced.

[0097] like Figure 16 As shown, there are multiple cooling channels 1313, which are arranged along the height direction of the battery pack 120 (reference). Figure 16 The coolant is distributed along the Z-axis direction. In this way, the coolant in the multiple cooling channels 1313 can cool different parts of the battery pack 120 in the height direction, making the temperature of the battery pack 120 more uniform in different parts in the height direction and less likely to cause local overheating.

[0098] like Figure 16As shown, the cooling channel 1313 runs along the length of the battery pack 120 (reference). Figure 16 The Y-axis direction of the cooling channel 131 passes through the partition 131. The two ends of the cooling channel 1313 can be used to connect the inlet and outlet of the cooling component 140 respectively. In this way, the coolant can circulate between the cooling channel 1313 and the cooling component 140 to achieve continuous cooling of the battery pack 120.

[0099] like Figure 16 As shown, a second adhesive layer 135 is provided between the separator 131 and the battery pack 120. The separator 131 and the battery pack 120 are respectively bonded to the opposite sides of the second adhesive layer 135. In this way, two adjacent battery packs 120 can be bonded into a whole through the separator 131, which can further improve the vibration resistance and impact resistance of the two adjacent battery packs 120.

[0100] In one embodiment, the second adhesive layer 135 is made of thermally conductive structural adhesive. This not only serves to fix the separator 131 and the battery pack 120, but also provides good thermal conductivity, improving the heat exchange efficiency between the battery pack 120 and the separator 131, and preventing the battery pack 120 from operating at too high a temperature.

[0101] Figure 17 This is a schematic diagram of the structure of the partition and the second adhesive layer provided in an exemplary embodiment of this application. Figure 17 As shown, the second adhesive layer 135 can be S-shaped. This can, on the one hand, increase the bonding area between the separator 131 and the battery pack 120, thereby improving the bonding stability between the separator 131 and the battery pack 120; on the other hand, the increased adhesive area helps to expel gas between the separator 131 and the battery pack 120 during the bonding process, preventing the formation of cavities in the bonding area that would affect the fixing effect between the separator 131 and the battery pack 120.

[0102] Specifically, the second adhesive layer 135 is S-shaped, which reduces the distance between the edge of the second adhesive layer 135 (including the upper and lower edges of the second adhesive layer 135 along the Z-axis) and the edge of the separator 131 (including the upper and lower edges of the separator 131 along the Z-axis). This allows the air between the separator 131 and the battery pack 120 to travel along a shorter path along the height direction of the battery pack 120 during the bonding process. Figure 17 The material is discharged in the Z-axis direction to prevent the formation of cavities in the bonding area, which would affect the fixing effect between the separator 131 and the battery pack 120.

[0103] In one embodiment, the second adhesive layer 135 may also be wavy, have multiple parallel lines, or have other shapes.

[0104] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0105] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0106] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0107] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0108] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A battery pack, characterized by, include: Box (110); Multiple battery packs (120) are disposed inside the housing (110); The fixing assembly (130) includes a partition (131) and a pressing member (132), at least a portion of the partition (131) being disposed between two adjacent sets of the battery packs (120), the pressing member (132) being detachably connected to the partition (131), and the pressing member (132) pressing against the top or bottom wall of the two adjacent sets of the battery packs (120).

2. The battery pack of claim 1, wherein, The partition (131) has multiple slots (133) on the side near the pressing member (132); The pressing member (132) includes: The pressure plate (1321) presses against the top or bottom wall of two adjacent sets of battery packs (120); Multiple buckles (1322) are provided on the side of the pressure plate (1321) near the partition plate (131); wherein the multiple buckles (1322) are engaged with the multiple slots (133) one by one.

3. The battery pack of claim 2, wherein, The pressure plate (1321) has a protrusion (1323) on the side near the partition (131), and the protrusion (1323) is embedded between two adjacent battery packs (120); Among them, a plurality of the buckles (1322) are provided on the protrusion (1323).

4. The battery pack of claim 2, wherein, The slot (133) includes a first slot segment (1331) and a second slot segment (1332) that are connected to each other, wherein the width of the second slot segment (1332) is greater than the width of the first slot segment (1331); The buckle (1322) includes: The connector (13221) is connected to the side of the pressure plate (1321) near the partition (131); A protrusion (13222) is provided at one end of the connector (13221) away from the pressure plate (1321), and the protrusion (13222) protrudes relative to the side wall of the connector (13221); The connector (13221) is embedded in the first groove (1331) and the second groove (1332), and the protrusion (13222) is engaged with the second groove (1332).

5. The battery pack of claim 4, wherein, The width direction of the second groove segment (1332) and the protrusion direction of the protrusion (13222) are both the same as the preset direction; wherein, the preset direction represents the length direction of the battery pack (120); or, The width direction of the second groove segment (1332) and the protrusion direction of the protrusion (13222) are both perpendicular to a preset direction; wherein, the preset direction represents the length direction of the battery pack (120).

6. The battery pack of claim 2, wherein, A first adhesive layer (134) is provided between the pressure plate (1321) and the top or bottom wall of the battery pack (120), and the pressure plate (1321) and the top or bottom wall of the battery pack (120) are respectively bonded to the opposite sides of the first adhesive layer (134). The pressure plate (1321) has a protrusion (1324) and / or a groove (1325) on the side near the first adhesive layer (134).

7. The battery pack of any one of claims 1-6, wherein, The partition (131) is provided with the pressing member (132) on both sides, wherein the pressing member (132) on one side abuts against the top wall of the battery pack (120), and the pressing member (132) on the other side abuts against the bottom wall of the battery pack (120).

8. The battery pack of any one of claims 1-6, wherein, The partition (131) includes: The first plate (1311) is disposed between two adjacent sets of the battery packs (120); The second plate (1312) is connected to the first plate (1311); The second plate (1312) presses against one of the top and bottom walls of the battery pack (120), and the pressing member (132) presses against the other of the top and bottom walls of the battery pack (120).

9. The battery pack of claim 8, wherein, The first plate (1311) and the second plate (1312) are constructed in a T-shape, with the second plate (1312) pressing against the top or bottom wall of two adjacent sets of battery packs (120); or, The first plate (1311) and the second plate (1312) are constructed in an L-shape, with the second plate (1312) pressing against the top or bottom wall of one of the battery packs (120).

10. The battery pack of any one of claims 1-6, wherein, The partition (131) is provided with a plurality of cooling channels (1313), which are distributed along the height direction of the battery pack (120).

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