A handle assembly for a multi-slot charger and a multi-slot charger

Abstract

The application discloses a handle assembly for a multi-slot charger and the multi-slot charger, the handle assembly comprises a handle, a first auxiliary handle and a second auxiliary handle, the first auxiliary handle and the second auxiliary handle are symmetrically arranged on two sides of the length direction of the shell of the multi-slot charger, and are fixedly connected with the shell, two ends of the handle are fixedly connected with the first auxiliary handle and the second auxiliary handle respectively, and the middle part is fixedly connected with the shell. The first shell and the second shell of the multi-slot charger are fixedly connected with the handle through the first auxiliary handle and the second auxiliary handle of the handle assembly, and the end faces of the first shell and the second shell are surrounded and fixed, and then the handle is connected and fixed, so that the force receiving area is increased, and the whole is more solid and reliable.

Description

Technical Field

[0001] This invention belongs to the field of charger technology, specifically relating to a handle assembly for a multi-slot charger and the multi-slot charger itself. Background Technology

[0002] In recent years, with the development of battery material technology, the application scope of lithium batteries has been greatly expanded. They are now widely used in power tools. In today's power tool industry, lithium battery packs are an unstoppable force as a new power source replacing traditional energy sources. The application of lithium battery packs is becoming increasingly widespread, and the requirements for their battery life and charging time are also becoming more stringent.

[0003] However, current chargers can only charge one-to-one, which greatly affects work efficiency due to the charging time. Furthermore, when charging a large number of battery packs separately, a large storage space is required, which causes great trouble for production and processing. Traditional chargers have poor heat dissipation. In addition, the handles in traditional chargers are directly fixed to the charger housing with screws, and the force is concentrated at the screw fixing point. The force-bearing area is too small, and the housing is easily damaged.

[0004] In view of this, it is indeed necessary to improve the existing chargers to solve the above problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a handle assembly for a multi-slot charger and a multi-slot charger, thereby improving the problem that traditional chargers can only charge one-to-one, which greatly affects work efficiency due to charging time, and the problem that in traditional chargers, the handle is directly fixed to the charger housing with screws, resulting in the force being concentrated at the screw fixing point, the force-bearing area being too small, and the housing being easily damaged.

[0006] This invention proposes a handle assembly for a multi-slot charger, the handle assembly comprising:

[0007] The multi-slot charger includes a handle, a first auxiliary handle, and a second auxiliary handle. The first auxiliary handle and the second auxiliary handle are symmetrically arranged on both sides of the length direction of the housing and are fixedly connected to the housing. The two ends of the handle are fixedly connected to the first auxiliary handle and the second auxiliary handle, respectively, and the middle part is fixedly connected to the housing.

[0008] In one embodiment of the present invention, the handle includes a main body and flat structures at both ends. The main body extends into the housing to form two connecting posts. The connecting posts extend into the interior of the housing and are fixedly connected to the housing by a reinforcing plate. The flat structures are used to fixably connect to the first auxiliary handle and the second auxiliary handle.

[0009] In one embodiment of the present application, the connecting column is provided with a clamping groove and a plurality of through holes near the bottom.

[0010] In one embodiment of the present application, the reinforcing plate is provided with a clamping structure and a threaded hole, and the reinforcing plate is installed by matching the clamping structure with the clamping groove, and then fixed and connected with the connecting column by bolts passing through the through holes and the threaded hole.

[0011] In one embodiment of the present application, the reinforcing plate is provided with a clamping structure and a threaded hole, and the reinforcing plate is installed by matching the clamping structure with the clamping groove, and then fixed and connected with the connecting column by bolts passing through the through holes and the threaded hole.

[0012] In one embodiment of the present application, the first auxiliary handle includes a handle part and a mounting part, and the handle part is integrally formed with the mounting part, and the mounting part is connected with the shell.

[0013] In one embodiment of the present application, the mounting part includes an opening, one end of the shell is located in the opening, and the shell is fixedly connected with the mounting part.

[0014] In one embodiment of the present application, the mounting part is further provided with a plurality of protruding structures, and the plurality of protruding structures are symmetrically arranged on both sides of the opening and connected with the shell.

[0015] In one embodiment of the present application, the top of the first auxiliary handle is provided with a recess, the recess is located above the opening, and the flat structure at both ends of the handle is located in the recess to be fixedly connected with the first auxiliary handle.

[0016] The present application also provides a multi-slot charger, which comprises:

[0017] a shell provided with a plurality of charging slots;

[0018] a charging interface located in the charging slot and matched with a matching interface on the battery pack;

[0019] a handle assembly, the handle assembly comprising a handle, a first auxiliary handle and a second auxiliary handle, the first auxiliary handle and the second auxiliary handle being symmetrically arranged on both sides of the shell in the length direction of the multi-slot charger and fixedly connected with the shell, both ends of the handle being fixedly connected with the first auxiliary handle and the second auxiliary handle, and the middle part of the handle being fixedly connected with the shell.

[0020] In one embodiment of the present application, the handle is arranged on the top of the shell along the length direction, and the ratio between the vertical distance from the front side of the first auxiliary handle to the center line of the handle and the vertical distance from the rear side of the first auxiliary handle to the center line of the handle is between 1 and 3.

[0021] In one embodiment of the present application, the shell comprises a first shell and a second shell, the first shell and the second shell are fixedly connected, the charging slot is arranged on the first shell, and a horizontal and vertical grid-shaped reinforcing rib is arranged on the inner wall of the second shell.

[0022] In one embodiment of the present application, the multi-slot charger further comprises a plurality of power supply terminals and a plurality of circuit board assemblies, the plurality of circuit board assemblies are arranged in the shell, the power supply terminals are electrically connected with the circuit board assemblies, and the power supply terminals are partially arranged in the charging slot to connect the battery pack.

[0023] In one embodiment of the present application, a spacing is arranged between the battery packs on two adjacent charging interfaces, and the spacing is arranged in a range of 3mm to 100mm.

[0024] In one embodiment of the present application, a switch is arranged on the multi-slot charger, and the switch is used to control the switching of the charging mode of the multi-slot charger.

[0025] The present application provides a handle assembly of a multi-slot charger and a multi-slot charger. The handle assembly is arranged instead of directly fixing the handle on the first shell and / or the second shell of the multi-slot charger by screws, so as to avoid stress concentration at the screw fixing position, thereby avoiding damage to the shell due to too small stress area. The first auxiliary handle and the second auxiliary handle in the handle assembly are arranged to surround and fix the end surface of the first shell and the second shell of the multi-slot charger, and then the handle is connected and fixed. This structure increases the stress area and is more solid and reliable.

[0026] The present application provides a handle assembly of a multi-slot charger and a multi-slot charger. A plurality of charging slots are arranged on the charger to simultaneously charge a plurality of battery packs, thereby improving the charging efficiency. Meanwhile, the multi-slot charger is configured with two different charging modes. Users can rotate different charging modes according to the needs to charge the battery packs under different conditions.

[0027] Meanwhile, a certain spacing is arranged between every two charging slots, so as to facilitate the installation of the battery packs and keep the same spacing between the battery packs installed on the charging slots, thereby serving as a safety distance for the battery packs during the charging process, avoiding collision and scratching of two adjacent battery packs during the insertion or extraction process. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0029] Figure 1 A structural schematic diagram of a multi-slot charger according to an embodiment of the present application.

[0030] Figure 2 A front view of a housing of the multi-slot charger according to an embodiment of the present application.

[0031] Figure 3 A schematic diagram of the spacing between battery packs according to an embodiment of the present application.

[0032] Figure 4 A side view of the multi-slot charger according to an embodiment of the present application.

[0033] Figure 5 A rear view of the multi-slot charger according to an embodiment of the present application.

[0034] Figure 6 A bottom view of the housing of the multi-slot charger according to an embodiment of the present application.

[0035] Figure 7 A schematic diagram of the axial side structure of the housing of the multi-slot charger according to an embodiment of the present application.

[0036] Figure 8 A schematic diagram of the multi-slot charger without the first housing according to an embodiment of the present application.

[0037] Figure 9 A schematic diagram of the circuit board and socket assembly of the multi-slot charger according to an embodiment of the present application.

[0038] Figure 10 A schematic diagram of the multi-slot charger without the second housing according to an embodiment of the present application.

[0039] Figure 11 A top view of the housing of the multi-slot charger according to an embodiment of the present application.

[0040] Figure 12 A bottom view of the housing of the multi-slot charger according to an embodiment of the present application.

[0041] Figure 13 A schematic diagram of the assembly of the multi-slot charger and battery packs according to an embodiment of the present application.

[0042] Figure 14Figure 1 is a side view of a multi-slot charger in accordance with an embodiment of the present application.

[0043] Figure 15 Figure 2 is a schematic view of a socket assembly in a multi-slot charger in accordance with an embodiment of the present application.

[0044] Figure 16 Figure 3 is an assembly view of a metal inlay and a charging interface in a multi-slot charger in accordance with an embodiment of the present application.

[0045] Figure 17 Figure 4 is an exploded view of a metal inlay and a charging interface in a multi-slot charger in accordance with an embodiment of the present application.

[0046] Figure 18 Figure 5 is a partial cross-sectional view along F-F. Figure 16

[0047] Figure 19 Figure 6 is an assembly view of a battery pack and a charging interface in a multi-slot charger in accordance with another embodiment of the present application.

[0048] Figure 20 Figure 7 is a schematic view of a charging interface in a multi-slot charger in accordance with another embodiment of the present application.

[0049] Figure 21 Figure 8 is a front view of a charging interface in a multi-slot charger in accordance with another embodiment of the present application.

[0050] Figure 22 Figure 9 is a schematic view of a battery pack in accordance with an embodiment of the present application.

[0051] Figure 23 Figure 10 is an exploded schematic view of a battery pack in accordance with an embodiment of the present application.

[0052] Figure 24 Figure 11 is a side view of a multi-slot charger and a battery pack in accordance with an embodiment of the present application.

[0053] Figure 25 Figure 12 is a schematic view of a battery pack in accordance with another embodiment of the present application.

[0054] Figure 26 Figure 13 is an exploded schematic view of a battery pack in accordance with another embodiment of the present application.

[0055] Figure 27 Figure 14 is a schematic view of a handle assembly in a multi-slot charger in accordance with an embodiment of the present application.

[0056] Figure 28 Figure 15 is an assembly view of a handle and a multi-slot charger housing in accordance with an embodiment of the present application.

[0057] Figure 29 ​Assembly view of the handle and the multi-slot charger housing from another angle in one embodiment of the present application.

[0058] Figure 30 Assembly view of the handle and the reinforcing plate in one embodiment of the present application.

[0059] Figure 31 Structure view of the handle in one embodiment of the present application.

[0060] Figure 32 Structure view of the reinforcing plate in one embodiment of the present application.

[0061] Figure 33 Assembly view of the auxiliary handle in one embodiment of the present application.

[0062] Figure 34 Top view of the multi-slot charger and the battery package after assembly in one embodiment of the present application.

[0063] Figure 35 Schematic view of the multi-slot charger placed horizontally in one embodiment of the present application.

[0064] Figure 36 Assembly view of the wall-mounted fixing bracket and the multi-slot charger in one embodiment of the present application.

[0065] Figure 37 Structure view of the wall-mounted fixing bracket in one embodiment of the present application.

[0066] Label Explanation:

[0067] Multi-slot charger 100; first shell 11; fixed column 1101; through hole 1102; second shell 12; handle assembly 20; handle 21; main body part 211; flat structure 212; connecting column 213; clamping groove 2131; through hole 2132; first auxiliary handle 22; second auxiliary handle 23; reinforcing plate 24; threaded hole 242; mounting hole 243; handle part 221; mounting part 222; inclined surface 2211; opening 2221; convex structure 2222; recess 223; bottom edge 2201; side edge 2202; first support foot 224; Second support foot 225; charging slot 101; circuit board assembly 102; power supply interface 103; switch 1031; first charging mode light 1041; second charging mode light 1042; charging slot indicator light 1043; cooling fan 106; First air vent 107; Second air vent 108; Inclined surface structure 109; Radiator 110; First charging interface 111; Groove 1111; Power supply terminal 112; Metal inlay 1113; Socket assembly 113; Connecting plate 1131; Boss 1132; Second charging interface 114; Guide rail 1141; Groove structure 1142; Battery pack 30; Upper shell 31; Handle 311; Lower shell 32; Cell support 33; Circuit board 34; Cell 35; Cell connecting sheet 36; Terminal interface 37; Matching interface 38; Battery pack 40; Upper shell 41; Lower shell 42; Cell support 43; Circuit board 44; Terminal interface 47; Matching interface 48; Wall hanging fixing bracket 115; Back plate surface 1151; Positioning hole 11501; Mounting hole 11502; Ventilation groove 11503; Bottom plate surface 1152; Second bottom surface 11504. DETAILED DESCRIPTION

[0068] The present application is described herein with reference to specific embodiments thereof which are illustrated in the attached drawings. These embodiments are described in detail to enable practitioners in the art to practice the application in various embodiments, and it is understood that the descriptions given herein are not to be taken as limiting the application. Although specific embodiments of the application can be illustrated and described herein, it is well understood that various present embodiments are not limited to the subject matter specifically described herein exemplifications of the inventive subject matter herein described are included within its spirit and scope.

[0069] It should be noted that the drawings illustrating the embodiments provided in the present embodiment only schematically illustrate the basic concept of the present application, and in the drawings, only the components related to the present application are shown, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be arbitrarily changed in terms of type, number and ratio, and the layout pattern of the components can be more complex.

[0070] This invention proposes a multi-slot charger 100 to solve the problems of current chargers that can only charge one battery at a time, which greatly affects work efficiency due to long charging times. Furthermore, charging a large number of battery packs separately requires significant storage space, posing a major challenge to manufacturing. Traditional chargers also suffer from poor heat dissipation. Figure 1 Figure 36 As shown, the multi-slot charger 100 includes a charger housing and a handle assembly 20. The handle assembly 20 is mounted on the charger housing 10. The charger housing is provided with a plurality of charging slots 101 for accommodating battery packs 30. A plurality of circuit board assemblies 102 are installed inside the charger housing. The circuit board assemblies 102 integrate charging circuits for charging the battery packs installed in the charging slots 101.

[0071] like Figures 1 to 6 As shown, in this embodiment, the charger housing includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fixedly installed together to form a receiving cavity. The circuit board assembly 102 is installed in the receiving cavity, and a power interface 103 is provided on the side of the charger housing 10. The power interface 103 is electrically connected to multiple circuit board assemblies 102 in the receiving cavity, and the power interface 103 is also used to connect to an external power source to provide charging power to the multi-slot charger 100. In this embodiment, a switch 1031 is also provided on the side of the charger housing 10 where the power interface 103 is provided, and the switch 1031 is located at the center line of the side of the charger housing 10. Figure 1 As shown, along Figure 1 The direction of X in the middle is the length direction of the multi-slot charger housing, along... Figure 1 The Y direction is the width direction of the multi-slot charger housing, along... Figure 1 The Z-direction is the height direction of the multi-slot charger housing. In this embodiment, the ratio between the length, width and height of the charger housing is set to (5-11):(1-2):(2-3). In this embodiment, the length, width and height of the charger housing are set to 1068mm, 159mm and 264mm, respectively.

[0072] like Figures 1 to 6As shown, it should also be noted that in this embodiment, the multi-slot charger 100 has at least two charging modes, namely a first charging mode and a second charging mode. The first charging mode starts charging from the battery pack 30 with the lowest power, and the second charging mode starts charging from the battery pack 30 with the highest power. The switching switch 1031 is used to control the switching of the charging modes of the multi-slot charger 100. In this embodiment, it is used to control the switching between the first charging mode and the second charging mode. In addition, in this embodiment, at least two charging indicator lights are also provided on the side of the charger housing 10 where the power interface 103 is located. The charging indicator lights are located on both sides of the switching switch 1031 to facilitate observation of whether the multi-slot charger 100 is connected to the power supply and is in working condition. When the charging indicator light is lit, it indicates that the power supply is connected and the multi-slot charger 100 is in working condition; when the charging indicator light is off, it indicates that the power supply is not connected and the multi-slot charger 100 is in non-working condition.

[0073] like Figures 1 to 6 As shown, specifically, the charging indicator light includes a first charging mode light 1041 and a second charging mode light 1042. When the first charging mode light 1041 is on and the second charging mode light 1042 is off, it indicates that the multi-slot charger is working in the first charging mode. When the switch 1031 is pressed again, when the second charging mode light 1042 is on and the first charging mode light 1041 is off, it indicates that the multi-slot charger is working in the second charging mode.

[0074] like Figures 1 to 6 As shown, in this embodiment, the charger housing 10 is provided with a plurality of charging slots 101, and the plurality of charging slots 101 are evenly distributed on the side of the charger housing 10 to accommodate a plurality of battery packs 30, so as to charge the plurality of battery packs 30 simultaneously. It should be noted that in this embodiment, a certain distance is provided between the plurality of charging slots 101 to avoid mutual interference between adjacent battery packs 30 when multiple battery packs 30 are installed on the multi-slot charger 100 for simultaneous charging, which would make installation inconvenient or impossible. It should also be noted that in this embodiment, the distance A between any two charging slots 101 is equal.

[0075] like Figure 1 and Figure 3As shown, in addition, in the embodiment, a spacing A is also maintained between the battery packs installed on the charging slots 101, specifically, the spacing A is the spacing between the adjacent sides of two adjacent battery packs, the spacing A is set between 3mm and 100mm, for example, as a safety distance of the battery packs during charging, to avoid collision and scratching of two adjacent battery packs during insertion or extraction, in addition, if the distance between two adjacent battery packs is too far, it is inconvenient to operate. In the embodiment, the number of the charging slots 101 can be set to 1, 2, 3, 4 or more, in the embodiment, the number of the charging slots 101 is preferably 6, and symmetrically on the side of the first shell 11 away from the second shell 12, to simultaneously charge multiple battery packs 30.

[0076] As shown in Figure 1 and Figure 7 shown, in the embodiment, the multi-slot charger 100 further comprises a plurality of charging slot indicator lights 1043, and the plurality of charging indicator lights are arranged on the top of the first shell 11 and below the handle 21 in the handle assembly 20, and the number of the charging slot indicator lights 1043 corresponds to the number of the charging slots 101 on the multi-slot charger 100, in the embodiment, the number of the charging slot indicator lights 1043 is preferably 6, and the charging slot indicator lights 1043 are divided into two groups, the two groups of charging slot indicator lights 1043 are symmetrically arranged relative to the center line O-O of the entire multi-slot charger 100, and are respectively located on the top of the second and fourth charging slots 101, when a battery pack 30 is inserted into a certain charging slot 101 and normally charged, the charging indicator light corresponding to the charging slot 101 is lit. Of course, the plurality of charging indicator lights can also be respectively located above or other positions of the corresponding charging slots 101.

[0077] As shown in Figure 1 in addition, in the embodiment, since the second shell 12 is long and thin, it is easy to deform or be damaged, therefore, a horizontal and vertical grid-shaped reinforcing rib can be arranged on the inner wall of the second shell 12 to reinforce the second shell 12 and avoid deformation or damage.

[0078] As shown in Figure 1 , Figure 8 and Figure 9As shown in the embodiment, a plurality of circuit board assemblies 102 are arranged in the charger housing 10, and a set of power supply terminals 112 is installed on each charging slot 101. The power supply terminals 112 and the charging circuit on the circuit board assembly 102 form a charging loop to charge one battery pack 30. Specifically, two charging slots 101 share one circuit board assembly 102, that is, each circuit board assembly 102 forms two charging loops with the power supply terminals 112 on two charging slots 101 to simultaneously charge two battery packs 30, and the two charging loops do not interfere with each other. In addition, a cooling fan 106 is installed on each circuit board assembly 102, and a second ventilation opening is arranged on the charger housing 10 and corresponds to the cooling fan 106 to achieve the cooling effect of the circuit board assembly 102, improve the heat dissipation effect of the multi-slot charger, and prolong the service life. In other embodiments, the number of circuit board assemblies can be one, and the circuit board is arranged in the vertical direction, that is, each set of power supply terminals 112 on the multi-slot charger shares one circuit board.

[0079] As shown in the embodiment, Figure 1 , Figure 11 and Figure 12 , the charger housing 10 is provided with a plurality of first ventilation openings 107 and a plurality of second ventilation openings 108, and the number of first ventilation openings 107 and the number of second ventilation openings 108 correspond to the number of circuit board assemblies 102, that is, the number of cooling fans 106. Specifically, the first ventilation openings 107 are arranged at the bottom of the first housing 11, the second ventilation openings 108 are arranged at the top of the first housing 11, the cooling fans 106 are installed on the circuit board assemblies 102 and face the second ventilation openings 108, and are arranged close to the top of the first housing 11. In other embodiments, the number of first ventilation openings 107 is greater than the number of second ventilation openings 108.

[0080] As shown in the embodiment, Figure 1 , Figure 11 and Figure 12 , in addition, in the embodiment, the first ventilation openings 107 and the second ventilation openings 108 are in a honeycomb shape, and in other embodiments, they can be arranged in other shapes. The area ratio of the first ventilation openings 107 to the second ventilation openings 108 is set to be between 1 and 2, which can ensure sufficient airflow through the high-temperature elements on the circuit board to improve the ventilation effect and enhance the heat dissipation effect.

[0081] As shown in the embodiment, Figure 1 , Figure 4 , Figure 11 andFigure 12 As shown, specifically, in the present embodiment, the bottom surface of the charger housing 10 is in an inclined state, i.e. the bottom surface is a slope structure 109, specifically, the direction of the slope structure 109 is inclined downward from the direction of the first housing 11 to the second housing 12, and the included angle a between the slope structure 109 and the ground is in the range of 3° to 6°, and the lowest point of the slope structure 109 is away from the ground by a distance L, which is in the range of, for example, 5mm to 20mm, specifically, in the present embodiment, the included angle a between the slope structure 109 and the ground is preferably 3°, and the distance L is preferably 16mm, so that the first air vent 107 of the bottom surface of the charging housing 10 always maintains a certain distance and angle from the bottom surface, avoiding the first air vent 107 being blocked, so that the ventilation inside the multi-slot charger 100 is affected, thereby affecting the heat dissipation effect of the multi-slot charger 100, so that there is enough air volume entering the multi-slot charger 100 to achieve heat dissipation of the high-temperature components inside the multi-slot charger 100. And under this included angle a, the first housing 11 of the multi-slot charger 100 is easier to demold during injection molding.

[0082] As shown in Figure 8 and Figure 9 In some embodiments, the multi-slot charger 100 further comprises a plurality of heat sink groups, which are installed on the circuit board assembly 102, specifically, in the present embodiment, each heat sink is arranged on the circuit board assembly 102 along the vertical direction, and the heat sinks 110 form an air duct body to enhance the heat dissipation effect, in some embodiments, the flow direction of the airflow is parallel to the heat sink 100 to further enhance the heat dissipation effect.

[0083] As shown in Figure 1 and Figure 14 In the present embodiment, the multi-slot charger 100 can adopt different placement modes, including vertical, horizontal and hanging type, by adopting different placement modes, so that the battery pack 30 can be conveniently inserted into the first charging interface 111 of the multi-slot charger 100, regardless of which placement mode (vertical, horizontal or wall-mounted) the multi-slot charger 100 adopts, so that the operation is convenient, therefore, an included angle is arranged between the first charging interface 111 and the vertical line of the multi-slot charger 100, so as to facilitate the insertion or extraction between the battery pack 30 and the first charging interface 111 of the multi-slot charger 100.

[0084] As shown in Figure 1 and Figure 14As shown, specifically, taking the example of the multi-slot charger 100 being placed vertically, in this embodiment, the charging slot 101 is provided with a first charging interface 111, when the multi-slot charger 100 is placed vertically, the first charging interface 111 is arranged obliquely in the charging slot 101, the first charging interface 111 is arranged in the charging slot 101 from the top end of the multi-slot charger 100 obliquely downward to the bottom end of the multi-slot charger 100, that is, the top end of the first charging interface 111 is away from the second shell 12, and the bottom end of the first charging interface 111 is close to the second shell 12. Specifically, in this embodiment, the first charging interface 111 is provided with an included angle β with the vertical direction of the multi-slot charger 100, the range of the included angle β is set to be between 0° and 60°, further, the range of the included angle β is set to be between 0° and 45°, further, the range of the included angle β is set to be between 0° and 30°, it can also be set to be between 0° and 15°, further limited to be between 0° and 10°, so as to facilitate the cooperation and installation of the battery pack 30 and the first charging interface 111, so as to charge.

[0085] As shown in Figure 1 and Figure 2 specifically, in this embodiment, the first charging interface 111 is provided with a charging rail to cooperate with the installation of the battery pack 30, and the width B of the charging rail is set to be between 30mm and 90mm. In addition, the total length L2 of the first charging interface 111 is set to be between 100mm and 110mm, so as to cooperate with the matching interface on the battery pack 30, so that it is stably matched and charged.

[0086] As shown in Figure 1 , Figure 10 and Figure 16As shown, in addition, in the embodiment, the inside of the first charging interface 111 is in a cavity state, and the top end is concave downward to form a groove 1111, the depth L1 of the groove 1111 is set to be between 20mm and 30mm, and the bottom of the groove 1111 is provided with a power supply terminal 112 for connecting with the terminal interface of the battery pack 30. Specifically, in the embodiment, the inside of the multi-slot charger 100 is provided with a socket assembly 113, which is fixedly connected with the inner wall of the first shell 11, and corresponds to the charging slot 101 one by one, and the surfaces of the two edges of the socket assembly 113 are flush with the bottom surface of the charging slot 101, and the socket assembly 113 includes a connecting plate 1131 located at the position close to the top of the socket assembly 113, and the lower part of the connecting plate 1131 extends outward to form a boss 1132 for supporting the power supply terminal 112, and a plurality of through holes are arranged on the connecting plate 1131, and the power supply terminal 112 is connected with the socket assembly 113, so that the circuit inside the multi-slot charger 100 is connected with the power supply terminal 112.

[0087] As shown in Figure 13 , Figure 16 and Figure 18 shown, in addition, it should be noted that in the embodiment, the first charging interface 111 includes a charging interface to facilitate the installation of the charging interface 111 and the battery pack, and the charging interface 111 is inlaid with a metal inlay 1113 to enhance the structural strength and prolong the service life. Specifically, during the insertion of the battery pack 30 along the first charging interface 111, the first charging interface 111 will be subjected to a certain friction, and during use, the first charging interface 111 will also be subjected to pressure exerted by the battery pack 30, therefore, the metal inlay 1113 is embedded in the first charging interface 111 to enhance the structural strength of the first charging interface 111, and in other embodiments, the structural strength of the first charging interface 111 can also be enhanced by increasing the wall thickness or adding reinforcing ribs.

[0088] As shown in Figure 14 , Figure 16 and Figure 18 shown, in the embodiment, when the battery pack is installed on the multi-slot charger 100, the ratio P between the total weight of the battery pack and the weight of the multi-slot charger 100 is set to be between 1 / 10 and 4. In the embodiment, the charging power range of the multi-slot charger is set to be between 200W and 2000W, for example, to meet the charging needs in different situations.

[0089] As shown in Figures 19 to 21As shown, in another embodiment, the present invention also provides a second charging interface 114 to replace the first charging interface 111. Similarly, when the multi-slot charger 100 is placed vertically, the second charging interface 114 is arranged obliquely in the charging slot 101. The second charging interface 114 is arranged obliquely downward from the top end of the multi-slot charger 100 to the bottom end of the multi-slot charger 100 in the charging slot 101, that is, the top end of the second charging interface 114 is away from the second housing 12, and the bottom end of the second charging interface 114 is close to the second housing 12. Specifically, in this embodiment, the second charging interface 114 is provided with an angle β with the vertical direction of the multi-slot charger 100. The angle β is set between 0° and 60°. Further, the angle β is set between 0° and 45°. Even further, the angle β is set between 0° and 30°. It can also be set between 0° and 15°, and further limited to between 0° and 10°, so as to facilitate the installation of the battery pack 30 and the second charging interface 114 for charging.

[0090] like Figures 19 to 21 As shown, in another embodiment, the second charging interface 114 is a groove structure 1142, and guide rails 1141 are provided on the two opposite inner sidewalls of the groove structure 1142 to cooperate in installing another battery pack 40. Similarly, in this embodiment, the power supply terminal 112 is installed at the bottom of the second charging interface 114 and is used to connect to the terminal interface of the battery pack 40 to charge the battery pack 40.

[0091] like Figure 1 , Figure 13 , Figure 22 and Figure 23As shown, in the embodiment, when the first charging interface 111 is arranged on the multi-slot charger 100, the battery pack 30 matched with the first charging interface 111 is a barrel-shaped battery pack, and the axis of the battery pack 30 is also at an angle β with the vertical direction of the multi-slot charger 100, and the angle β is set to be between 0° and 60°, further, the angle β is set to be between 0° and 45°, further, the angle β is set to be between 0° and 30°, and can also be set to be between 0° and 15°, and is further limited to be between 0° and 10°, so as to facilitate the installation of the battery pack 30 and the second charging interface 114 to charge. In the embodiment, the battery pack 30 comprises an upper shell 31, a lower shell 32, a cell support 33 and a circuit board 34, the upper shell 31 and the lower shell 32 are connected to form a receiving cavity, the cell support 33 and the circuit board 34 are located in the receiving cavity, and a plurality of cells 35 are installed in the cell support 33, the plurality of cells 35 are electrically connected through a cell connecting piece 36, and the circuit board 34 is electrically connected with the cells 35, and the battery pack 30 further comprises a terminal interface 37, and the terminal interface 37 is electrically connected with the circuit board 34.

[0092] As shown in Figure 1 , Figure 13 , Figure 19 and Figure 23 , specifically, in the embodiment, one side of the lower shell 32 is provided with a matching interface 38 matched with the first charging interface 111, and the terminal interface 37 is located at the top of the matching interface 38, and the power supply terminal 112 is connected with the terminal interface 37 at the top of the matching interface 38 to charge the battery pack 30. In addition, in the embodiment, the upper shell 31 is further provided with a handle 311 to facilitate the user to take or move the battery pack 30. It should be noted that when the battery pack 30 is installed on the multi-slot charger 100 for charging, the axis direction of the cells 35 in the battery pack 30 is parallel or perpendicular to the direction of the first charging interface 111, and in the embodiment, the direction is set to be perpendicular to each other.

[0093] As shown in Figure 1 , Figure 19 , Figure 25As shown in FIG. 26, in another embodiment, when the second charging interface 114 is arranged on the multi-slot charger 100, the battery pack 40 is a single-voltage battery pack, which comprises an upper shell 41, a lower shell 42, a cell holder 43 and a circuit board 44. The upper shell 41 and the lower shell 42 are connected to form a receiving cavity, and the cell holder 43 and the circuit board 44 are located in the receiving cavity. A plurality of cells (not shown) are arranged in the cell holder 43, and the cells are electrically connected by cell connecting pieces (not shown). The circuit board 44 is electrically connected with the cells. In addition, the battery pack 40 further comprises a terminal interface 47, which is electrically connected with the circuit board 44.

[0094] As Figure 1 , Figure 19 , Figure 25 As shown in FIG. 26, specifically, in this embodiment, the upper shell 41 is provided with a matching interface 48 matched with the second charging interface 114. The terminal interface 47 is located at the matching interface 48. When the battery pack 40 is matched and installed with the second charging interface 114, the power supply terminal 112 is connected with the terminal interface 47 on the matching interface 48 to charge the battery pack 40. It should also be noted that when the battery pack 40 is installed on the multi-slot charger 100 for charging, the axial direction of the cells in the battery pack 40 is parallel or perpendicular to the direction of the second charging interface 114.

[0095] As Figure 1 , Figures 27 to 33As shown, in the embodiment, the multi-slot charger 100 further comprises a handle assembly, which comprises a handle 21, a first auxiliary handle 22 and a second auxiliary handle 23. Specifically, the handle 21 is located at the top of the multi-slot charger 100 and is arranged at the top of the shell 10 along the length direction (X direction) of the shell 10. The first auxiliary handle 22 and the second auxiliary handle 23 are respectively mounted on the two sides of the multi-slot charger 100 along the length direction (X direction) and are fixedly connected with the first shell 11 and the second shell 12. In some embodiments, the two ends of the handle 21 are also fixedly connected with the first auxiliary handle 22 and the second auxiliary handle 23 respectively. Specifically, in the embodiment, the handle 21 has an arch-shaped structure, the middle main body part 211 is similar to a cylinder, and the two ends are arranged as flat structures 212 to facilitate the fixed connection with the first auxiliary handle 22 and the second auxiliary handle 22. In the embodiment, two connecting columns 213 are formed downward from the main body part 211 of the handle 21, the connecting columns 213 extend into the interior of the multi-slot charger 100 through the through holes 1102 on the first shell 11, and are fixedly connected with the multi-slot charger 100 through the reinforcing plate 24.

[0096] As Figure 1 , Figures 27 to 33 It should be noted that, in the embodiment, since the multi-slot charger 100 has an "elongated structure", the first auxiliary handle 22 and the second auxiliary handle 22 surround and fix the end faces of the first shell 11 and the second shell 12 of the multi-slot charger 100, and are then connected and fixed with the handle 21. This structure increases the stress area and makes the whole more solid and reliable. If the first auxiliary handle 22 and the second auxiliary handle 22 are removed, the handle 21 is directly fixed to the first shell 11 and / or the second shell 12 of the multi-slot charger 100 by screws, the stress is concentrated on the screw fixing points, the stress area is too small, and the shell is easy to be damaged.

[0097] As Figure 1 , Figures 27 to 33As shown, specifically, in the embodiment, the connecting column 213 is provided with a clamping groove 2131 and a plurality of through holes 2132 at the position close to the bottom, the plurality of through holes 2132 are located below the clamping groove 2131, the reinforcing plate 24 is also provided with a clamping structure 241 matched with the clamping groove 2131 and a threaded hole 242 matched with the through hole 2132, that is, the reinforcing plate 24 is installed by matching the clamping structure 241 with the clamping groove 2131, and then the connecting column 213 and the reinforcing plate 24 are fixed and connected together by bolts passing through the through hole 2132 and the threaded hole 242, in addition, in the embodiment, the reinforcing plate 24 is also provided with a mounting hole 243 at both ends, the inner wall of the first shell 11 is provided with a fixing column 1101 matched with the mounting hole 243, that is, the fixing column 1101 passes through the mounting hole 243 and is fixed by bolts to connect the reinforcing plate 24 and the multi-slot charger 100 together.

[0098] As shown in the drawings, Figure 1 , Figures 27 to 33 in addition, in the embodiment, the first auxiliary handle 22 and the second auxiliary handle 23 are symmetrically installed on both sides of the multi-slot charger 100 and are fixedly connected with the first shell 11, the second shell 12 and the handle 21, and the first auxiliary handle 22 and the second auxiliary handle 23 are the same in structure.

[0099] As shown in the drawings, Figure 1 , Figure 34As shown, in the embodiment, the first auxiliary handle 22 is taken as an example for illustration, the first auxiliary handle 22 comprises a handle part 221 and a mounting part 222. Specifically, the mounting part 222 comprises an opening 2221, the opening 2221 can accommodate the first shell 11 and the second shell 12, that is, after the first shell 11 and the second shell 12 are fixedly mounted together, one end thereof is located in the opening 2221, and a plurality of protruding structures 2222 are further arranged on the mounting part 222, and the plurality of protruding structures 2222 are respectively located on both sides of the opening 2221 and symmetrically distributed, and the protruding structures 2222 are arranged along the height direction of the multi-slot charger 100, so as to be connected with the first shell 11 and the second shell 12 by bolts. In the embodiment, the number of the protruding structures 2222 is for example 4, and 2 are respectively arranged on both sides of the opening 2221, so as to be fixedly connected with the first shell 11 and the second shell 12 by bolts, and a recess 223 is arranged at the top of the first auxiliary handle 22, the recess 223 is located above the opening 2221, and is used to be fixedly connected with the flat structures 212 at both ends of the handle 21. Specifically, the flat structures 212 at both ends of the handle 21 are located in the recess 223 and are fixedly connected by bolts. In the embodiment, the handle part 221 is fixedly connected with the mounting part 222, and can also be integrally formed, and is located on one side of the mounting part 222, so as to facilitate the staff to take or move the multi-slot charger 100. In addition, in the embodiment, an inclined surface 2211 is arranged at the top of the side of the handle part 221 away from the mounting part 222, and the included angle between the inclined surface 2211 and the vertical direction is for example 45°, so as to facilitate the operator to operate.

[0100] As Figure 1 and Figure 24As shown, it should be noted that, due to the weight of the side of the multi-slot charger 100 on which the battery pack is installed is heavier, the center of gravity is easy to deviate, so the overall multi-slot charger 100 is easy to lose balance and tilt to one side, therefore, in the present embodiment, the handle assembly 20 is arranged along the length direction (X direction) on the top of the shell, and in the width direction (Y direction) of the shell 10, the vertical distance between the two sides of the auxiliary handle and the center line G-G of the handle 21 in the handle assembly 20 is between 1 and 3, specifically, the ratio between the vertical distance between the front side of the auxiliary handle and the center line of the handle 21 and the vertical distance between the rear side of the auxiliary handle and the center line of the handle 22 is between 1 and 3, the front side of the auxiliary handle is the side of the shell 10 on which the charging slot is arranged, and the rear side of the auxiliary handle is the side of the shell 10 on which the second shell 12 is arranged. Specifically, the vertical distance between the center line of the handle 21 and the side of the auxiliary handle close to the charging slot 101 is C, the vertical distance between the axis of the handle 21 and the side of the auxiliary handle close to the second shell 12 is D, and the ratio between the vertical distance C and the vertical distance D is between 1 and 3, so as to ensure the stability of the overall multi-slot charger 100, thereby ensuring the smooth progress of the charging process.

[0101] As Figures 35 to 37 , Figure 24 , Figure 35 shown, in the present embodiment, the multi-slot charger 100 can adopt various placement modes, including Figure 36 vertical placement as shown, Figure 36 horizontal placement as shown and Figure 37When the multi-slot charger is placed in a vertical manner, the bottom surface of the auxiliary handle supports the multi-slot charger, and the bottom edge 2201 of the auxiliary handle supports the multi-slot charger. When the multi-slot charger is placed in a horizontal manner, the side edge 2202 of the auxiliary handle supports the multi-slot charger. In some embodiments, the mounting portion 222 is provided with a first supporting leg 224 on the side away from the handle portion 221, and the bottom surface of the first auxiliary handle 22 is also provided with a second supporting leg 225. The two supporting legs support the multi-slot charger 100 when the multi-slot charger 100 is placed in different manners. Specifically, when the multi-slot charger 100 is placed in a vertical manner, the second supporting leg 225 on the bottom surface of the first auxiliary handle 22 supports the multi-slot charger 100, and the worker can move the multi-slot charger 100 by using the lifting handle 21. When the multi-slot charger 100 is placed in a horizontal manner, the first supporting leg 224 on the side of the mounting portion 222 away from the handle portion 221 supports the multi-slot charger 100, and the worker can move the multi-slot charger 100 by using the handle portion 221. When placed on a wall, the multi-slot charger 100 can be hung on a vertical wall by a wall-hanging fixing bracket 115.

[0102] As shown in Figure 36 and Figure 37 In this embodiment, the wall-hanging fixing bracket 115 is fixedly installed on the multi-slot charger 100, and the wall-hanging fixing bracket 115 surrounds the multi-slot charger 100 from four sides. Specifically, the wall-hanging fixing bracket 115 includes a back plate surface 1151 for wrapping the second housing 12 on the multi-slot charger 100, and the back plate surface 1151 is provided with positioning holes 11501 near the upper positions on the two sides, and the two positioning holes 11501 are located on the same straight line. The positioning holes 11501 are used to fix and limit the multi-slot charger 100, so as to ensure the accurate positioning of the multi-slot charger 100 on the wall-hanging fixing bracket 115, thereby facilitating installation. In addition, since the back plate surface 1151 is long and thin, a plurality of reinforcing ribs are formed on the back plate surface 1151 to increase the strength of the back plate surface 1151. In this embodiment, the reinforcing ribs are integrally formed with the back plate surface 1151.

[0103] As shown in Figure 36 and Figure 37As shown in the drawings, in the embodiment, the back plate surface 1151 is also provided with a plurality of mounting holes 11502 for fixing the wall-hanging fixing support 115 to a vertical wall, and in the embodiment, the plurality of mounting holes 11502 are uniformly distributed on the back plate surface 1151 to ensure uniformity of force received by the wall-hanging fixing support 115 during hanging, thereby ensuring stability of hanging.

[0104] As shown in the drawings, Figure 36 and Figure 37 As shown in the drawings, in the embodiment, the wall-hanging fixing support 115 further includes a bottom plate surface 1152 for supporting and wrapping the bottom surface of the multi-slot charger 100, the bottom plate surface 1152 is in close contact with the bottom surface of the multi-slot charger 100 to better support the multi-slot charger 100, and since the angle α between the bottom surface of the multi-slot charger 100 and the horizontal plane is in the range of 3° to 6°, the angle between the bottom plate surface 1152 and the back plate surface 1151 is correspondingly in the range of 94° to 97° to better fit the bottom surface of the multi-slot charger 100.

[0105] As shown in the drawings, Figure 36 and Figure 37 As shown in the drawings, in the embodiment, the bottom plate surface 1152 is further provided with a plurality of ventilation grooves 11503 spaced apart, and the plurality of ventilation grooves 11503 are one-to-one corresponding to the first ventilation openings 107 at the bottom of the multi-slot charger 100, so that the ventilation inside the multi-slot charger 100 is not affected, thereby avoiding affecting the heat dissipation effect.

[0106] As shown in the drawings, Figure 35 and Figure 37 As shown in the drawings, in the embodiment, the wall-hanging fixing support 115 further includes a first side plate surface and a second side plate surface for wrapping the first auxiliary handle 22 and the second auxiliary handle 23 on the multi-slot charger 100, respectively, and the first side plate surface and the second side plate surface extend inwards, i.e. towards the direction of the bottom plate surface 1152, to form a second bottom surface 11504, and the second bottom surface 11504 is perpendicular to the back plate surface 1151, and the second bottom surface 11504 is used for supporting the first auxiliary handle 22 and the second auxiliary handle 23. In the embodiment, the bottom plate surface 1152 and the second bottom surface 11504 are both rigid force receiving surfaces to better support the multi-slot charger 100, specifically, the weight of the battery pack 30 is transmitted to the multi-slot charger 100 through the first charging interface 111, the weight of the multi-slot charger 100 is transmitted to the wall-hanging fixing support 115 through the first auxiliary handle 22, the second auxiliary handle 23, the first shell 11 and the second shell 12, and the wall-hanging fixing support 115 is fixed to a vertical wall through the mounting holes 11502 on the wall-hanging fixing support 115 and by using screws.

[0107] As shown in Figure 35 and Figure 37 In the embodiment, the back plate surface 1151, the bottom plate surface 1152, the first side plate surface, the second side plate surface and the second bottom surface 11504 can be integrally formed to further enhance the strength of the wall-mounted fixing support 115. In the embodiment, the wall-mounted fixing support 115 is made of metal, and can also be made of aluminum or its alloy, as long as the structural strength is met. In the embodiment, the ratio of the weight of the wall-mounted fixing support 115 to the weight of the multi-slot charger 100 is in the range of 0.1 to 0.5, so that it is more labor-saving during moving or installation. It should be noted that, in order to facilitate moving and installation, the wall-mounted fixing support 115 is preferably made of light material under the condition that the structural strength is met.

[0108] As shown in ​ and ​ In the embodiment, the installation process is as follows: first, the wall-mounted fixing support 115 is fixed on a vertical wall by screwing through the mounting hole 11502 on the back plate surface 1151, then the multi-slot charger 100 is placed on the wall-mounted fixing support 115, so that the bottom surface of the multi-slot charger 100 and the bottom plate surface 1152 of the wall-mounted fixing support 115 are attached to each other, and the first housing 11 and the back plate surface 1151 are attached to each other, and finally the multi-slot charger 100 is fixed on the wall-mounted fixing support 115 by screwing through the positioning hole 11501 on the back plate surface 1151 and connecting with the mounting hole 11502 on the back plate surface 1151. In another embodiment of the application, the wall-mounted fixing support 115 can be omitted, and a plurality of clamping grooves or openings are provided on the first housing 11 for clamping and fixing with the bolts fixed on the wall.

[0109] The application provides a multi-slot charger, which is configured with a plurality of charging slots to simultaneously charge a plurality of battery packs, thereby improving the charging efficiency. Meanwhile, the multi-slot charger is configured with two different charging modes, and the user can rotate the different charging modes according to the needs in different situations to charge the battery packs. Meanwhile, a certain spacing is provided between every two charging slots to facilitate the installation of the battery packs and avoid the interference between the adjacent two battery packs.

[0110] The application provides a multi-slot charger, which is configured with a plurality of charging slots to simultaneously charge a plurality of battery packs, thereby improving the charging efficiency. Meanwhile, the multi-slot charger is configured with two different charging modes, and the user can rotate the different charging modes according to the needs in different situations to charge the battery packs. Meanwhile, a certain spacing is provided between every two charging slots to facilitate the installation of the battery packs and avoid the interference between the adjacent two battery packs.

[0111] The application provides a multi-slot charger, by setting an included angle beta between the charging interface and the vertical direction of the multi-slot charger, and setting the included angle beta in a reasonable range, the cooperation and installation between the battery pack and the charging interface are very convenient.

[0112] The application provides a multi-slot charger, which uses a plurality of different placement modes, so that different placement modes are used in different use scenarios, so that the multi-slot charger is more reasonably used.

[0113] The application provides a multi-slot charger, by setting a handle assembly instead of directly fixing the handle on the first shell and / or the second shell of the multi-slot charger by screws, avoiding stress concentration at the screw fixing point, so as to avoid that the shell is easily damaged due to too small stress area, the first auxiliary handle and the second auxiliary handle in the handle assembly are connected with the area of the multi-slot charger, the end faces of the first shell and the second shell of the multi-slot charger are surrounded and fixed, and then the handle is connected and fixed, the structure increases the stress area, and the whole is more solid and reliable.

[0114] The above description is only the preferred embodiment of the application and the explanation of the applied technical principles, and those skilled in the art should understand that the scope involved in the application is not limited to the technical solutions formed by the specific combination of the above technical features, and also covers other technical solutions formed by the combination of the above technical features or equivalent features without departing from the inventive concept, for example, the technical solutions formed by the mutual replacement of the above features and the technical features disclosed in the application (but not limited to) having similar functions.

[0115] In addition to the technical features described in the specification, the remaining technical features are known to those skilled in the art, and in order to highlight the innovative features of the application, the remaining technical features will not be described here.

Claims

1. A handle assembly for a multi-slot charger, comprising: a handle, a first auxiliary handle and a second auxiliary handle, the first auxiliary handle and the second auxiliary handle being symmetrically arranged on both sides of a length direction of a housing of the multi-slot charger and fixedly connected with the housing, two ends of the handle being fixedly connected with the first auxiliary handle and the second auxiliary handle respectively, and a middle portion of the handle being fixedly connected with the housing, a main body portion of the handle extending out of the housing to form two connecting columns, the connecting columns extending into an interior of the housing and being fixedly connected with the housing through a reinforcing plate; a clamping groove and a plurality of through holes being formed on the connecting columns near a bottom portion, the plurality of through holes being located below the clamping groove; the reinforcing plate being provided with a clamping structure and a threaded hole, the reinforcing plate being installed through cooperation of the clamping structure and the clamping groove, and the connecting columns and the reinforcing plate being fixedly connected together through bolts passing through the through holes and the threaded hole; the reinforcing plate being further provided with mounting holes at both ends thereof, the housing being provided with fixing columns corresponding to the mounting holes on an inner wall thereof, the fixing columns passing through the mounting holes and being fixed through bolts to connect the reinforcing plate with the multi-slot charger. The handle comprises a main body portion and flat structures at both ends thereof, and the flat structures are used for fixedly connecting with the first auxiliary handle and the second auxiliary handle. The first auxiliary handle comprises a handle portion and a mounting portion, the handle portion being integrally formed with the mounting portion, and the mounting portion being connected with the housing. The mounting portion comprises an opening, one end of the housing being located in the opening and being fixedly connected with the mounting portion. The mounting portion is further provided with a plurality of protruding structures, and the plurality of protruding structures are symmetrically arranged on both sides of the opening and connected with the housing.

2. The handle assembly for a multi-cell charger of claim 1, wherein, A recess is arranged on a top portion of the first auxiliary handle, the recess being located above the opening, and the flat structures at both ends of the handle being located in the recess to be fixedly connected with the first auxiliary handle.

3. The handle assembly for a multi-cell charger of claim 1, wherein, The handle assembly comprises a handle, a first auxiliary handle and a second auxiliary handle, the first auxiliary handle and the second auxiliary handle being symmetrically arranged on both sides of a length direction of a housing of the multi-slot charger and fixedly connected with the housing, two ends of the handle being fixedly connected with the first auxiliary handle and the second auxiliary handle respectively, and a middle portion of the handle being fixedly connected with the housing, a main body portion of the handle extending out of the housing to form two connecting columns, the connecting columns extending into an interior of the housing and being fixedly connected with the housing through a reinforcing plate; a clamping groove and a plurality of through holes being formed on the connecting columns near a bottom portion, the plurality of through holes being located below the clamping groove; the reinforcing plate being provided with a clamping structure and a threaded hole, the reinforcing plate being installed through cooperation of the clamping structure and the clamping groove, and the connecting columns and the reinforcing plate being fixedly connected together through bolts passing through the through holes and the threaded hole; the reinforcing plate being further provided with mounting holes at both ends thereof, the housing being provided with fixing columns corresponding to the mounting holes on an inner wall thereof, the fixing columns passing through the mounting holes and being fixed through bolts to connect the reinforcing plate with the multi-slot charger.

4. The handle assembly for a multi-cell charger of claim 3, wherein, ​ 5. The handle assembly for a multi-cell charger of claim 4, wherein, ​ 6. The handle assembly for a multi-cell charger of claim 4, wherein, ​ 7. A multi-slot charger characterized by, ​ ​ ​ ​ ​ The reinforcing plate is provided with a clamping structure and a threaded hole, the reinforcing plate is installed through the cooperation of the clamping structure and the clamping groove, and then the connecting column and the reinforcing plate are fixed and connected together through bolts passing through the through hole and the threaded hole. Both ends of the reinforcing plate are also provided with mounting holes, the inner wall of the shell is provided with fixing columns matched with the mounting holes, the fixing columns pass through the mounting holes and are fixed through bolts to connect the reinforcing plate and the multi-slot charger together.

8. The multi-slot charger of claim 7, wherein, The handle is arranged along the length direction on the top of the shell, and the ratio between the vertical distance between the front side of the first auxiliary handle and the center line of the handle and the vertical distance between the rear side of the first auxiliary handle and the center line of the handle is between 1 and 3.

9. The multi-slot charger of claim 7, wherein, The shell comprises a first shell and a second shell, the first shell and the second shell are fixedly connected, the charging slot is located on the first shell, and the inner wall of the second shell is provided with reinforcing ribs in a horizontal and vertical grid shape.

10. The multi-slot charger of claim 7, wherein, The multi-slot charger further comprises a plurality of power supply terminals and a plurality of circuit board assemblies, the plurality of circuit board assemblies are located in the shell, the power supply terminals are electrically connected with the circuit board assemblies, and the power supply terminals are partially located in the charging slot to connect the battery pack.

11. The multi-slot charger of claim 10, wherein, The battery packs on two adjacent charging interfaces are provided with a spacing, and the spacing is arranged in a range of 3mm to 100mm.

12. The multi-slot charger of claim 7, wherein, The multi-slot charger is provided with a switch, which is used to control the switching of the charging mode of the multi-slot charger.

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