Battery pack

Abstract

The utility model relates to a battery pack which comprises a battery module, a protection assembly, a heat-shrinkable sleeve and first waterproof pieces, the protection assembly is arranged on the outer side of the battery module, the protection assembly is sleeved with the heat-shrinkable sleeve, and the first waterproof pieces are connected to the two ends of the heat-shrinkable sleeve in a sealed mode. According to the technical scheme, the technical problems that a traditional battery pack is large in occupied space, poor in anti-collision performance and short in service life are effectively solved.

Description

Technical Field

[0001] The present application relates to the field of battery packaging technology, and in particular to a battery pack. Background Art

[0002] Traditional battery packs usually include a shell and components such as battery modules and control boards arranged inside the shell. On the one hand, the shell is used to provide waterproof performance for the battery pack to prevent external water from entering and damaging internal components; on the other hand, it is used to improve the anti-collision performance of the battery pack. When external mechanical force hits the battery pack, it will first release the force on the shell to prevent the mechanical force from directly hitting other components and causing damage to the components. Although traditional battery packs with shells have better performance, they occupy too much space and are not suitable for use in scenarios with smaller installation spaces.

[0003] In the related art, the space occupied by the battery pack can be reduced by reducing the number of cells or by setting up a battery pack without a shell. However, reducing the number of cells in the battery pack will greatly weaken the performance of the battery pack, resulting in poor market value and poor user experience; by setting up a battery pack without a shell, due to the lack of shell protection, the internal components have poor protection against external impacts, and the battery pack has a short service life. Utility Model Content

[0004] The present application provides a battery pack to solve the technical problems of traditional battery packs that they occupy a large space, have poor impact resistance, and have a short service life.

[0005] To this end, an embodiment of the present application provides a battery pack, including a battery module, a protective component, a heat shrink kit and a first waterproof component. The protective component is arranged on the outside of the battery module, the heat shrink kit is arranged on the outside of the protective component, and the first waterproof component is sealed and connected to both ends of the heat shrink kit.

[0006] In a possible implementation, the protection assembly includes at least one first protection member and a plurality of first fasteners, and the first protection member is connected to the battery module via the plurality of first fasteners.

[0007] In a possible embodiment, the battery module includes a first bracket, a second bracket and a plurality of battery cells, the first bracket is provided with a plurality of first half slots, the second bracket is provided with a plurality of second half slots, when the second bracket is connected to the first bracket, a second half slot and a first half slot are combined to form an installation chamber for accommodating at least one battery cell, and the plurality of battery cells are arranged between the first bracket and the second bracket.

[0008] In a possible embodiment, the first bracket is provided with a plurality of first connection holes extending along the width direction of the battery module, the second bracket is provided with a plurality of second connection holes extending along the width direction of the battery module, one second connection hole is arranged corresponding to one first connection hole, and the battery module also includes a plurality of second fasteners, one second fastener is passed through one first connection hole and one second connection hole to connect and fasten the first bracket and the second bracket.

[0009] In a possible embodiment, the first bracket is provided with a plurality of first fastening holes extending along the length direction of the battery module, the second bracket is provided with a plurality of second fastening holes extending along the length direction of the battery module, a second fastening hole is arranged corresponding to a first fastening hole, and the battery module also includes a plurality of locking members, a locking member is passed through a first fastening hole and a second fastening hole to connect and fasten the first bracket and the second bracket.

[0010] In a possible implementation, the battery pack further includes a main control board, which is disposed between the battery module and the protection component.

[0011] In a possible implementation, the protection assembly further includes a second protection member and a plurality of third fasteners, the second protection member is connected to the battery module via the plurality of third fasteners, and the main control board is disposed between the second protection member and the battery module.

[0012] In a possible embodiment, the battery module is provided with a mounting groove and a plurality of third connection holes arranged in the mounting groove, the third connection holes extend along the height direction of the battery module, the second protective member is provided with a plurality of fourth connection holes, a fourth connection hole is arranged corresponding to a third connection hole, the main control board is arranged in the mounting groove, the second protective member covers the outside of the main control board and is embedded in the mounting groove, and a third fastener is passed through a fourth connection hole and a third connection hole to connect and fasten the second protective member and the battery module.

[0013] In a possible implementation, two first protective members are provided, the two first protective members are respectively provided on the left and right sides of the battery module, the second protective member is provided on the top or bottom of the battery module, and the first waterproof member is respectively provided on the front and rear ends of the battery module.

[0014] In a possible implementation, the first protective member includes a first protective plate and a connecting folded edge arranged at an angle to the first protective plate, and when the first protective plate abuts against an outer wall of the battery module, the connecting folded edge overlaps an adjacent outer wall of the battery module.

[0015] In a possible implementation, the first waterproof component is provided with an escape window for evading cables of the battery module, and the battery pack further includes a second waterproof component, which is sealed and connected to the escape window.

[0016] According to the battery pack provided in the embodiment of the present application, the outer shell setting in the traditional battery pack is abandoned, and the multiple components in the battery pack are wrapped by adding a heat shrink kit and a first waterproof component. In addition, the material properties of the heat shrink kit are utilized to gather the multiple components together, thereby effectively improving the compactness of the internal layout of the battery pack and reducing the space occupied by the battery pack. At the same time, the heat shrink kit cooperates with the first waterproof component to provide excellent waterproof performance for multiple components and prevent external water from entering the components and causing damage to the battery pack. In addition, a protective component is added between the battery module and the heat shrink kit, and the protective component is used to release force, thereby effectively improving the anti-collision performance of the battery pack. Specifically, the battery pack is configured to include at least a battery module, a protection component, a heat shrink kit and a first waterproof component, which are arranged in sequence from the inside to the outside. The protection component is used to protect the battery module, enhance the impact resistance of the battery module, and extend the service life of the battery module; the heat shrink kit is wrapped around the outside of the protection component and the battery module, so that the protection component and the battery module can be tightly assembled, the compactness of the layout is improved, and the occupied space is reduced; the first waterproof component is arranged on the two ends of the heat shrink kit, which effectively improves the sealing and waterproof properties at the two ends of the heat shrink kit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments that conform to the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can also be obtained based on these drawings without paying creative labor. One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a proportional limitation.

[0018] Figure 1 An exploded view of a battery pack provided in an embodiment of the present application;

[0019] Figure 2 A partial exploded view of a battery pack provided in an embodiment of the present application;

[0020] Figure 3 An assembly diagram of a battery pack provided in an embodiment of the present application;

[0021] Figure 4 An exploded view of a battery module of a battery pack provided in an embodiment of the present application;

[0022] Figure 5A partial exploded view of the battery module and protection assembly of the battery pack provided in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 100, battery module; 101, mounting sink; 110, first bracket; 111, first half-slot; 120, second bracket; 121, second half-slot; 130, battery cell; 140, second fastener; 150, cable;

[0025] 200, protection assembly; 210, first protection member; 211, first protection plate; 212, connecting fold; 220, second protection member; 221, fourth connecting hole; 230, third fastener;

[0026] 300, heat shrink kit;

[0027] 400, first waterproof part; 401, avoidance window;

[0028] 500, main control board;

[0029] X, width direction; Z, height direction; Y, length direction. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can appreciate the applicability of other processes and / or the use of other materials.

[0032] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0033] See also Figures 1 to 5 An embodiment of the present application provides a battery pack, including a battery module 100, a protection component 200, a heat shrink kit 300 and a first waterproof component 400. The protection component 200 is arranged on the outside of the battery module 100, the heat shrink kit 300 is sleeved on the outside of the protection component 200, and the first waterproof component 400 is sealed and connected to both ends of the heat shrink kit 300.

[0034] In this embodiment, the outer shell setting in the traditional battery pack is abandoned, and a heat shrink kit 300 and a first waterproof component 400 are added to wrap multiple components in the battery pack, and the material properties of the heat shrink kit 300 are used to gather the multiple components together, which effectively improves the compactness of the internal layout of the battery pack and reduces the space occupied by the battery pack; at the same time, the heat shrink kit 300 cooperates with the first waterproof component 400 to provide excellent waterproof performance for multiple components and prevent external water from entering the components and causing damage to the battery pack; in addition, a protective component 200 is added between the battery module 100 and the heat shrink kit 300, and the protective component 200 is used to release force, which effectively improves the anti-collision performance of the battery pack.

[0035] Specifically, the battery pack is configured to be a composite component including at least a battery module 100, a protection component 200, a heat shrink kit 300 and a first waterproof component 400, which are arranged in sequence from the inside to the outside. The protection component 200 is used to protect the battery module 100, enhance the impact resistance of the battery module 100, and extend the service life of the battery module 100; the heat shrink kit 300 is wrapped around the outside of the protection component 200 and the battery module 100, so that the protection component 200 and the battery module 100 can be tightly assembled, improve the compactness of the layout, and reduce the occupied space; the first waterproof component 400 is arranged on the two ends of the heat shrink kit 300, which effectively improves the sealing and waterproof properties at the two ends of the heat shrink kit 300.

[0036] In one example, the heat shrink kit 300 may be a heat shrink tubing, the main material of which is plastic, including PVC, ABS, EVA, PET, etc. The heat shrink tubing is a heat shrink packaging material that shrinks when heated and has good flame retardant, insulating, anti-corrosion, heat-resistant, wear-resistant, waterproof sealing, and mechanical buffering properties. For example, but not limited to, the heat shrink tubing may be a heat shrink tubing or EVA tubing made of a special polyolefin material. When the heat shrink tubing is sleeved outside the protective component 200 and the battery module 100, the heat shrinking performance of the heat shrink tubing is utilized to press the protective component 200 and the battery module 100 tightly, so that at least the assembly gap between the heat shrink tubing and the protective component 200 and the occupied space at the assembly gap between the protective component 200 and the battery module 100 can be reduced.

[0037] In one example, the first waterproof member 400 is a waterproof foam, which is attached to both ends of the plastic package and extends outward to completely wrap the two ends of the plastic package. The outlet ends of the waterproof foam are then stacked and covered with sealing glue to make the battery pack meet the IPX7 waterproof execution standard.

[0038] See also Figure 1 In a possible implementation, the protection assembly 200 includes at least one first protection member 210 and a plurality of first fasteners (not shown in the figure), and the first protection member 210 is connected to the battery module 100 through the plurality of first fasteners. In this way, the first protection member 210 can enhance the mechanical protection of the battery module 100 and improve the anti-collision performance of the battery module 100.

[0039] In this embodiment, the specific configuration of the protection component 200 is optimized. Specifically, the first protection member 210 can be a PC insulating protection plate, which can be provided in two pieces, and the two first protection members 210 are respectively provided on the left and right sides of the battery module 100 to achieve mechanical protection of the battery module 100 in the width direction X. The first fastener can be a component such as a screw / bolt, and the first protection member 210 is connected and fastened to the battery module 100 through the first fastener. It should be understood that the first protection member 210 is provided with a through hole for the first fastener to pass through, and the battery module 100 is provided with a fixing hole corresponding to the through hole. The first fastener is sequentially inserted into the through hole and the fixing hole to achieve the connection and fastening of the first protection member 210 and the battery module 100.

[0040] Among them, PC sheet, also known as polycarbonate sheet, is an amorphous, odorless, non-toxic, highly transparent, colorless or yellow thermoplastic engineering plastic, generally with a thickness of 0.25mm to 5mm. PC sheet has good physical and mechanical properties, impact resistance, heat resistance and temperature resistance, etc. It has high tensile strength, high bending strength, high compression strength, low creep and stable size. When PC sheet is used as a protective component of battery module 100, it can effectively buffer external mechanical impact force, avoid external mechanical impact force directly acting on battery module 100, and improve the service life of battery module 100.

[0041] Of course, in other embodiments, the first fastener may not be provided, and the first protective member 210 can directly press against the battery module 100 through the extrusion force of the plastic package, thereby simplifying the overall structure of the battery pack and reducing production costs.

[0042] See also Figure 1 , Figure 4 and Figure 5 In a possible embodiment, the battery module 100 includes a first bracket 110, a second bracket 120 and a plurality of battery cells 130. The first bracket 110 is provided with a plurality of first half grooves 111, and the second bracket 120 is provided with a plurality of second half grooves 121. When the second bracket 120 is connected to the first bracket 110, a second half groove 121 and a first half groove 111 are combined to form an installation chamber for accommodating at least one battery cell 130. The plurality of battery cells 130 are arranged between the first bracket 110 and the second bracket 120.

[0043] In this embodiment, the specific configuration of the battery module 100 is optimized. Specifically, the battery module 100 is configured as a composite component including at least a first bracket 110, a second bracket 120 and a plurality of battery cells 130. The first bracket 110 may be a rectangular parallelepiped frame, on which a plurality of first half-slots 111 arranged in an array are provided, and the first half-slots 111 may be cylindrical and extend along the width direction X of the battery module 100; the second bracket 120 may be a rectangular parallelepiped frame, on which a plurality of second half-slots 121 arranged in an array are provided, and the second half-slots 121 may be cylindrical and extend along the width direction X of the battery module 100; when the second bracket 120 is assembled on the first bracket 110, the second half-slots 121 are connected to the first half-slots 111, and enclose a cylindrical installation chamber for accommodating the battery cells 130, and the cylindrical battery cells 130 are assembled in the installation chamber. In this way, by providing the first bracket 110 and the second bracket 120 , on the one hand, the integrated accommodation of the plurality of battery cells 130 is achieved, and on the other hand, the anti-collision performance of the battery module 100 is improved by the two bracket structures.

[0044] In one example, one installation chamber is equipped with one battery cell 130 to prevent interference between adjacent battery cells 130 and affect battery performance. Of course, in other embodiments, one installation chamber can be equipped with multiple battery cells 130, and two adjacent battery cells 130 are separated by a partition, so as to improve the space utilization of the battery module 100, and more battery cells 130 can be accommodated in a limited space, thereby improving power supply performance.

[0045] In one example, the first bracket 110 and the second bracket 120 can be assembled together under the extrusion of the external heat shrink kit 300 to improve the utilization rate of the thermoplastic kit. Of course, the first bracket 110 and the second bracket 120 can also be connected together by bonding or welding to improve the connection tightness of the two brackets and improve the anti-collision ability.

[0046] See also Figure 4 and Figure 5 In a possible embodiment, the first bracket 110 is provided with a plurality of first connection holes extending along the width direction X of the battery module 100, and the second bracket 120 is provided with a plurality of second connection holes extending along the width direction X of the battery module 100, and one second connection hole is arranged corresponding to one first connection hole. The battery module 100 also includes a plurality of second fasteners 140, and one second fastener 140 is passed through one first connection hole and one second connection hole to connect and fasten the first bracket 110 and the second bracket 120.

[0047] In this embodiment, the specific configuration of the battery module 100 is further optimized. Specifically, the battery module 100 is configured as a composite component including at least a first bracket 110, a second bracket 120, a plurality of battery cells 130, and a plurality of second fasteners 140. The second fasteners 140 may be components such as long screws / long bolts. The second fasteners 140 are sequentially inserted into the first connection hole of the first bracket 110 and the second connection hole of the second bracket 120 to achieve a detachable connection between the first bracket 110 and the second bracket 120, so as to facilitate subsequent maintenance and replacement of the battery cells 130 by operators.

[0048] In a possible embodiment, the first bracket 110 is provided with a plurality of first fastening holes extending along the length direction Y of the battery module 100, and the second bracket 120 is provided with a plurality of second fastening holes extending along the length direction Y of the battery module 100, and a second fastening hole is arranged corresponding to a first fastening hole. The battery module 100 also includes a plurality of locking members (not shown in the figure), and a locking member is passed through a first fastening hole and a second fastening hole to connect and fasten the first bracket 110 and the second bracket 120.

[0049] In this embodiment, the specific configuration of the battery module 100 is further optimized. Specifically, the battery module 100 is configured as a composite component including at least a first bracket 110, a second bracket 120, a plurality of battery cells 130 and a plurality of locking members, wherein the locking member may be a member such as a long screw / long bolt, the length of which is greater than the length of the second fastener 140, and is used to lock the first bracket and the second bracket in the length direction Y of the battery module 100. In this way, the connection gap between the first bracket 110 and the second bracket 120 can be covered by the protective component 200, thereby improving the aesthetics of the battery module 100. In addition, the assembled protection component 200 and battery module 100 are nested together in the heat shrink kit 300, and the heat shrink kit 300 is wrapped around the protection component 200 and the battery module 100, so that the protection component 200 and the battery module 100 fit more closely, thereby improving the drop / shock resistance and reducing the occupied space; at the same time, the two ends of the heat shrink kit 300 are shrunk and wrapped tightly, so that the fit between the first bracket 110 and the second bracket 120 is tighter, further improving the connection stability of the battery module 100.

[0050] In a possible implementation, the battery pack further includes a main control board 500, which is disposed between the battery module 100 and the protection component 200. In this configuration, the protection component 200 provides mechanical protection for the main control board 500, thereby improving the anti-impact performance of the main control board 500.

[0051] like Figure 1 and Figure 5As shown, the battery pack is configured as a composite component including at least a battery module 100, a protection component 200, a heat shrink kit 300, a first waterproof component 400 and a main control board 500. The main control board 500 can be a BMS board, which is arranged between the battery module 100 and the protection component 200. The BMS board is electrically connected to the battery module 100, and the BMS board is powered by the battery module 100. The protection component 200 is arranged on the outside of the BMS board. When an external mechanical impact force acts on the battery pack, most of the external force is buffered and consumed on the heat shrink kit, and most of the remaining external force is consumed and released on the protection component 200. Finally, the remaining small part of the external force acts on the BMS board or the battery module 100. This part of the external force can be ignored, and the impact on the BMS board or the battery module 100 can be ignored.

[0052] See also Figure 1 and Figure 5 In a possible implementation, the protection component 200 further includes a second protection member 220 and a plurality of third fasteners 230 , the second protection member 220 is connected to the battery module 100 via the plurality of third fasteners 230 , and the main control board 500 is disposed between the second protection member 220 and the battery module 100 .

[0053] In this embodiment, the specific configuration of the protection component 200 is optimized. Specifically, the protection component 200 is configured as a composite component including at least a second protection member 220 and a plurality of third fasteners 230, wherein the second protection member 220 may be a protection plate, and the third fasteners 230 may be components such as screws or bolts, and the third fasteners 230 are inserted between the second protection member 220 and the battery module 100 to achieve the connection and fastening of the second protection member 220 and the battery module 100, and the main control board 500 is sandwiched between the second protection member 220 and the outer wall of the battery module 100.

[0054] See also Figure 1 and Figure 5 In a possible embodiment, the battery module 100 is provided with a mounting groove 101 and a plurality of third connection holes arranged in the mounting groove 101, the third connection holes extend along the height direction Z of the battery module 100, the second protective member 220 is provided with a plurality of fourth connection holes 221, one fourth connection hole 221 is arranged corresponding to one third connection hole, the main control board 500 is arranged in the mounting groove 101, the second protective member 220 covers the outside of the main control board 500 and is embedded in the mounting groove 101, and a third fastener 230 is passed through one fourth connection hole 221 and one third connection hole to connect and fasten the second protective member 220 and the battery module 100. In this way, the main control board 500 and the second protective member 200 are accommodated in the side wall space of the battery module 100, which ensures the anti-impact performance of the battery pack and further reduces the occupied space of the battery pack.

[0055] In this embodiment, the connection method of the battery module 100, the main control board 500 and the second protective member 220 is optimized. Specifically, a mounting groove 101 is provided on the battery module 100, and the mounting groove may be a square groove for accommodating the main control board 500 and the second protective member 220. The main control board 500 may be a square circuit board, and the second protective member 220 may be a square protective board. The plane size of the main control board 500 may be slightly smaller than the size of the mounting groove 101, so that the main control board 500 may be placed at the bottom of the mounting groove 101; the size of the second protective member 220 is adapted to the size of the mounting groove 101, so that one side of the second protective member 220 may be inserted into the mounting groove 101 and pressed against the main control board 500; and then, the third fastener 230 is sequentially inserted into the fourth connection hole 221 and the third connection hole to achieve the connection and fastening of the second protective member 220 and the battery module 100. The main control board 500 and the second protective member 220 are accommodated in the side wall space of the battery module 100 , which reduces the space occupied by the battery pack and improves the stability and anti-collision performance of the main control board 500 .

[0056] In one example, a through hole corresponding to the third connection hole is provided on the main control board 500. When the second protective member 220 is embedded in the mounting recess 101, the fourth connection hole 221 corresponds to the through hole and the third connection hole, and the third fastener 230 is sequentially inserted into the fourth connection hole 221, the through hole and the third connection hole to achieve the connection and fastening of the second protective member 220, the main control board 500 and the battery module 100. At this time, the main control board 500 is connected between the battery module 100 and the second protective member 220 through the third fastener 230, and will not shift or misalign with the shaking of the battery pack, and has better stability.

[0057] In a possible embodiment, two first protective members 210 are provided, and the two first protective members 210 are respectively provided on the left and right sides of the battery module 100, the second protective member 220 is provided on the top or bottom of the battery module 100, and the first waterproof member 400 is respectively provided on the front and rear ends of the battery module 100.

[0058] As shown in Figure 1 and Figure 5, two first protective members 210 are provided to achieve mechanical protection for the left and right sides of the battery module 100. At the same time, a second protective member 220 and a main control board 500 are provided at the top or bottom of the battery module 100, which can not only achieve the storage, fastening and mechanical protection of the main control board 500, but also achieve mechanical protection of the top or bottom of the battery module 100 through the second protective member 220. A first waterproof member 400 is provided at the front and rear ends of the battery module 100, which can achieve the sealing of the two ends of the thermoplastic kit through the first waterproof member 400, enhance the waterproof performance of the thermoplastic kit, and achieve mechanical protection of the front and rear ends of the battery module 100. In this way, the mechanical protection of the battery module 100 can be strengthened by arranging different components at different positions of the battery module 100, and its impact resistance to external mechanical impact can be improved.

[0059] See also Figure 1 In a possible embodiment, the first protective member 210 includes a first protective plate 211 and a connecting fold 212 arranged at an angle to the first protective plate 211. When the first protective plate 211 abuts against the outer wall of the battery module 100, the connecting fold 212 overlaps the adjacent outer wall of the battery module 100.

[0060] In this embodiment, the specific configuration of the first protective member 210 is optimized. Specifically, the first protective member 210 is configured as a composite member including at least a first protective plate 211 and a connecting fold 212, the connecting fold 212 is a long sheet structure, vertically connected to the first protective plate 211, and the first protective plate 211 and the connecting fold 212 both extend along the length direction Y of the battery module 100, and are used to protect the edges of the battery module 100 in the length direction Y.

[0061] In one example, there is one connection fold 212, which is arranged on the side of the first protective plate 211 facing the second protective member 220, and the end face of the connection fold 212 is arranged opposite to the end face of the second protective member 220, and the outer surface of the connection fold 212 can be flush with the outer surface of the second protective member 220 to reduce the wall thickness at the connection between the connection fold 212 and the second protective member 220, thereby reducing the occupied space. Of course, in other embodiments, the connection fold 212 can also be set to two or more, and the two or more connection folds 212 are respectively arranged on different side edges of the first protective plate 211 to achieve mechanical protection of different edges of the battery module 100.

[0062] See also Figures 1 to 3 and Figure 5 In a possible implementation, a first waterproof component 400 is provided with an escape window 401 for escaping the cable 150 of the battery module 100 , and the battery pack further includes a second waterproof component (not shown in the figure), and the second waterproof component is sealed and connected to the escape window 401 .

[0063] In this embodiment, the first waterproof component 400 may be a waterproof foam, and the second waterproof component may be a waterproof glue. The first waterproof component 400 is pasted on both ends of the plastic kit and extends outward to completely wrap the two ends of the plastic kit; at the same time, the outlet end of the first waterproof component 400 is stacked and covered with sealing glue, so as to achieve the first layer of waterproof sealing of the thermoplastic kit. The second waterproof component is stacked and covered at the avoidance window 401 of the first waterproof component 400 to achieve the second layer of waterproof sealing of the thermoplastic kit. In this way, the battery pack can expose the cable 150 of the battery module 100 and be electrically connected to external electrical devices; it can also make the battery pack meet the waterproof IPX7 implementation standard and improve the market value of the battery pack.

[0064] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0065] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0066] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A battery pack, characterized in that: It includes a battery module, a protection component, a heat shrink kit and a first waterproof component. The protection component is arranged on the outside of the battery module, the heat shrink kit is sleeved on the outside of the protection component, and the first waterproof component is sealed and connected to both ends of the heat shrink kit.

2. The battery pack according to claim 1, characterized in that: The protection assembly includes at least one first protection member and a plurality of first fasteners, and the first protection member is connected to the battery module through the plurality of first fasteners.

3. The battery pack according to claim 2, characterized in that: The battery module includes a first bracket, a second bracket and a plurality of battery cells. The first bracket is provided with a plurality of first half-slots, and the second bracket is provided with a plurality of second half-slots. When the second bracket is connected to the first bracket, one of the second half-slots and one of the first half-slots are combined to form an installation chamber for accommodating at least one of the battery cells. The plurality of battery cells are arranged between the first bracket and the second bracket.

4. The battery pack according to claim 3, characterized in that: The first bracket is provided with a plurality of first connection holes extending along the width direction of the battery module, and the second bracket is provided with a plurality of second connection holes extending along the width direction of the battery module, and one second connection hole is arranged corresponding to one first connection hole. The battery module also includes a plurality of second fasteners, and one second fastener is passed through one first connection hole and one second connection hole to connect and fasten the first bracket and the second bracket.

5. The battery pack according to claim 3, characterized in that: The first bracket is provided with a plurality of first fastening holes extending along the length direction of the battery module, and the second bracket is provided with a plurality of second fastening holes extending along the length direction of the battery module, and one second fastening hole is arranged corresponding to one first fastening hole. The battery module also includes a plurality of locking members, and one locking member is passed through one of the first fastening holes and one of the second fastening holes to connect and fasten the first bracket and the second bracket.

6. The battery pack according to claim 2, characterized in that: The battery pack further includes a main control board, which is arranged between the battery module and the protection component.

7. The battery pack according to claim 6, characterized in that: The protection assembly further includes a second protection member and a plurality of third fasteners, the second protection member is connected to the battery module via the plurality of third fasteners, and the main control board is disposed between the second protection member and the battery module.

8. The battery pack according to claim 7, characterized in that: The battery module is provided with a mounting groove and a plurality of third connection holes arranged in the mounting groove, the third connection holes extend along the height direction of the battery module, the second protective member is provided with a plurality of fourth connection holes, one fourth connection hole is arranged corresponding to one third connection hole, the main control board is arranged in the mounting groove, the second protective member covers the outside of the main control board and is embedded in the mounting groove, and a third fastener is passed through one of the fourth connection holes and one of the third connection holes to connect and fasten the second protective member and the battery module.

9. The battery pack according to claim 7, characterized in that: There are two first protective members, which are respectively arranged at the left and right sides of the battery module, the second protective member is arranged at the top or bottom of the battery module, and the first waterproof member is respectively arranged at the front and rear ends of the battery module.

10. The battery pack according to claim 2, characterized in that: The first protective member includes a first protective plate and a connecting folded edge arranged at an angle to the first protective plate. When the first protective plate abuts against the outer wall of the battery module, the connecting folded edge overlaps the adjacent outer wall of the battery module.

11. The battery pack according to claim 1, characterized in that: The first waterproof component is provided with an escape window for escaping the cables of the battery module, and the battery pack further comprises a second waterproof component, and the second waterproof component is sealed and connected to the escape window.

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