Battery system

Abstract

The utility model relates to a battery system, the battery system comprises a power utilization device and a battery pack, the battery pack comprises a plurality of output terminals and supplies power to the power utilization device simultaneously through the plurality of output terminals, the plurality of output terminals are connected in parallel, a main body of the power utilization device forms a battery compartment, and the battery compartment is connected with the power utilization device. The battery compartment at least partially accommodates the battery pack, a handle is arranged on the battery pack, the battery compartment for accommodating the battery pack is provided with a locking device, the battery pack is automatically locked when being placed in the battery compartment, and the battery pack is automatically unlocked when a user takes out the battery pack from the battery compartment through the handle. And the battery pack is very convenient to disassemble while high-efficiency discharging is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of outdoor garden operation equipment, in particular to a battery system. BACKGROUND

[0002] With the development of battery technology, battery packs are gradually applied to garden tools. The existing battery packs used in cooperation with outdoor garden tools generally have a locking structure on the battery pack. When the battery pack is used in cooperation with the outdoor garden tool, the user can press the locking structure of the battery pack with one hand to remove the battery pack or fix the battery pack with the garden tool. However, with the emergence of some large electric garden tools and the requirement for endurance in some scenarios, the battery pack is getting larger and larger, and the weight is much greater than that of ordinary small battery packs. The user cannot control the unlocking and removal of the battery pack with one hand, and the original battery pack locking and releasing structure is not suitable for such large battery packs. SUMMARY

[0003] The purpose of the present application is to provide a large-capacity battery pack and a battery system suitable for the battery pack.

[0004] In order to achieve the above-mentioned target, the technical scheme adopted by the present application is as follows:

[0005] A battery system includes a battery pack and a battery compartment accommodating the battery pack. The battery compartment has a cavity space and at least part of the battery pack is placed in the battery compartment. The battery pack is provided with a handle, and the side wall of the battery compartment is provided with a locking device. The user controls the unlocking of the locking device on the battery compartment through the handle on the battery pack, so as to facilitate the user to control the removal and placement of the battery pack with one hand. The battery pack can be automatically locked when placed, and automatically unlocked when removed. Specifically:

[0006] The battery pack includes a battery cell module having a plurality of battery cells, a battery pack shell accommodating the battery cell module, and an operating member movably arranged on the shell, which is preferably a handle. The side wall of the battery compartment is provided with a locking device, and the shell of the battery pack has a structure matched with the locking device. When the battery pack is placed in the battery compartment, the locking device can automatically lock the battery pack. When the user removes the battery pack through the handle, the locking device is automatically unlocked with the battery pack.

[0007] In one embodiment, the handle of the battery pack is rotatably connected to the battery pack shell through a rotating shaft, and the rotating shaft includes a first rotating shaft and a second rotating shaft, both of which rotate around a first axis. The handle rotates relative to the battery pack between a storage position and a extraction position. When the battery pack is placed in the battery compartment and the handle of the battery pack is rotated to the extraction position, the locking device on the battery compartment is unlocked. When the battery pack is placed in the battery compartment and the handle of the battery pack is in the storage position, the locking device on the battery compartment is locked with the battery pack.

[0008] In another embodiment, the handle of the battery pack is slidingly fitted with the battery pack housing to move between the storage position and the extraction position; the battery pack housing is provided with a sliding groove, at least part of the handle can move up and down along the sliding groove; when the battery pack is placed in the battery compartment, the handle moves from the storage position to the extraction position to act on the locking device to release the locking of the battery pack by the locking device.

[0009] Further, in the embodiment in which the handle rotates around the battery pack housing, the end of the handle can directly act on the locking device to unlock the locking device and the battery pack, or the rotation of the handle can drive the movement of the unlocking slider to act on the locking device; wherein the end of the handle includes a first end and a second end, when the handle is in the storage position, the second end is far away from the locking device; during the rotation or movement of the handle from the storage position to the extraction position, the second end gradually approaches the locking device, and the first end gradually moves away from the locking device, and finally the second end acts on the locking device or the unlocking slider to unlock the unlocking device.

[0010] Specifically, the second end and the first end are located on the outer surface of the end of the handle, the distance X between the second end and the first axis is greater than the distance Y between the first end and the first axis, and the difference between X and Y is greater than or equal to 8mm.

[0011] Specifically, the locking device on the battery compartment includes a movable clamping piece, a first elastic piece acting on the clamping piece, and a mounting bracket mounting the clamping piece and the first elastic piece; the inner wall of the battery compartment is provided with a lock opening, the clamping piece can move left and right under the action of the force of the handle or the unlocking slider, thereby having an extended state of extending out of the inner wall of the battery compartment and a storage state of retracting into the lock opening, the clamping piece is in clamping engagement with the battery pack in the extended state to lock, and the clamping piece is in clamping engagement with the battery pack in the storage state to unlock; the first elastic piece abuts against the clamping piece to make the clamping piece have a tendency to move in the direction close to the cavity of the battery compartment; the surface of the shell of the battery pack has a protruding and / or recessed locking surface, the clamping piece of the locking assembly cooperates with the locking surface of the surface of the shell of the battery pack to form a locking assembly, when the handle is rotated in a predetermined direction, the handle and / or the unlocking slider drive the clamping piece to realize extension and retraction; the mounting bracket is fixed on the side wall of the battery compartment and includes a locking groove, the clamping piece is movably mounted in the locking groove, the first elastic piece is located between the clamping piece and the mounting bracket, the clamping piece can be rotatably located in the locking groove, the first elastic piece is a torsion spring, the clamping piece can also be slidably located in the locking groove, and the first elastic piece is a spring; in another embodiment, the mounting bracket can also not be needed, the locking groove is formed with the side wall of the battery compartment, the clamping piece is movably mounted in the locking groove, and the first elastic piece is located between the clamping piece and the side wall of the battery compartment to drive the movement of the clamping piece.

[0012] Furthermore, in an embodiment in which the movement of the unlocking slider is driven by the rotation of the handle to act on the locking device, the extension direction of the slide rail that accommodates the movement of the unlocking slider forms a certain angle with the extension direction of the first axis of rotation of the handle; preferably, the angle is 90°, that is, the extension direction of the slide rail is basically perpendicular to the extension direction of the first axis, and the rotation of the handle around the first axis drives the unlocking slider to move up and down.

[0013] Furthermore, a second elastic member is provided to abut against the unlocking slider, so that the unlocking slider has a tendency to move toward the handle end. The second elastic member is located between the battery pack shell and the unlocking slider, so that when the locking assembly does not need to be unlocked, the unlocking slider can be reset.

[0014] Furthermore, a limiting portion is provided at the fitting point of the unlocking slider and the slide rail, and the limiting portion is located on the unlocking slider and / or the slide rail to limit the slider from disengaging from the slide rail; specifically, a hook or protrusion is provided on the unlocking slider, and a stop structure that cooperates with the hook or protrusion is provided at a position of the battery pack shell near the slide rail, and the stop structure limits the unlocking slider from disengaging from the slide rail under the action of the force of the second elastic member.

[0015] Furthermore, the end of the engaging member close to the unlocking slider is wedge-shaped, and the surface of the engaging member abutting the unlocking slider or the handle end is the engaging surface; preferably, the angle between the engaging surface and the horizontal plane is 45°, and the downward displacement of the unlocking slider is basically equal to the displacement of the engaging member in the left and right directions.

[0016] Furthermore, the depth of the engagement between the engaging member and the locking surface on the battery pack is ≥8mm to ensure that the engaging member can firmly fix the battery pack in the battery compartment; the end of the engaging member is provided with a chamfer to avoid the end of the engaging member interfering with the battery pack when the battery pack is taken out.

[0017] Furthermore, due to the large size of the battery pack, in order to ensure that the battery pack is firmly locked in the battery compartment, at least two locking devices are provided on the side walls of the battery compartment, and the two locking devices are respectively provided on both sides of the length direction of the battery compartment; wherein, the distance between the locking device and the bottom surface of the battery compartment is greater than half the depth of the battery compartment, that is, the battery compartment has a first center dividing surface in the height direction perpendicular to the battery compartment, and the locking device is located above the first center dividing surface.

[0018] Furthermore, the handle is U-shaped, having a gripping portion and a pivoting portion, the gripping portion extends along the first axis, the pivoting portion is substantially perpendicular to the gripping portion, and the first end portion and the second end portion are located on the outer surface of the pivoting portion; the handle is flat, and the thickness of the handle is ≥15 mm.

[0019] Further, the handle is rotatably connected with the battery pack shell through a metal pin. In order to avoid abrasion of the battery pack shell during rotation, a metal sleeve is arranged at the pivot hole of the handle, that is, the metal sleeve is interference-fitted in the pivot hole, and the metal pin is rotatably connected with the metal sleeve, thereby prolonging the service life.

[0020] Further, the end of the metal pin is formed with a boss, and the metal pin is limited in the pivot hole by cooperation of the stop ring and the boss, thereby preventing the metal pin from being separated from the pivot hole. Meanwhile, the handle is covered with soft rubber, and the soft rubber has a shape matching the fingers. The user can operate the handle with one hand to take out the battery pack, or can operate the handle with both hands to take out the battery pack. A notch is arranged at the contact position between the battery pack shell and the holding portion of the handle, thereby facilitating the user to operate the handle to move the handle from the storage position to the extraction position.

[0021] Further, a third elastic member is arranged at the pivot hole of the handle, and the third elastic member is a torsion spring. After the user removes the force applied to the handle, the handle can be reset to the storage position.

[0022] Further, the bottom of the battery compartment is provided with an elastic device, and the elastic device includes a plurality of springs or elastic sheets. The plurality of springs are uniformly distributed along the bottom surface of the battery compartment, so as to apply an ejecting force to the battery pack after the battery pack is unlocked, thereby facilitating the taking out of the battery pack.

[0023] Further, the weight of the battery pack is greater than or equal to 10 Kg, the capacity of the battery pack is greater than or equal to 30 Ah, and the ratio of the capacity to the weight of the battery pack is greater than or equal to 2.5 Ah / kg.

[0024] Further, the battery pack is a cuboid, the handle extends along the length direction of the battery pack, the ratio of the length of the handle to the length of the battery pack is greater than or equal to 1 / 2, the ratio of the length of the battery pack to the height of the battery pack is greater than or equal to 1.5, and the ratio of the length of the battery pack to the width of the battery pack is greater than or equal to 2. The plurality of battery cells are lithium iron phosphate battery cells, and the rated voltage of the battery pack is greater than or equal to 50 V.

[0025] Further, the plurality of battery cells in the battery pack are arranged in parallel along the width direction of the battery pack in the shell of the battery pack. The battery pack further includes a BMS control board for controlling the charging and discharging of the plurality of battery cells, and a support for supporting the plurality of battery cells. The BMS control board is located above the support, and the ratio of the length of the BMS control board to the length of the battery pack is greater than or equal to 0.7.

[0026] Further, in the embodiment in which the handle is rotatably connected with the battery pack shell and rotates relative to the battery pack to switch between the storage position and the extraction position, a holding space is formed between the handle in the extraction position and the battery pack shell. The height of the holding space is greater than or equal to 20 mm. The handle is rotatably connected with the shell of the battery pack through a first rotating shaft and a second rotating shaft.

[0027] Further, the side wall of the battery pack shell is also provided with a plug-in part, which plays a guiding role when the battery pack is installed into the battery compartment, the extension direction of the plug-in part is parallel to the extension direction of the slide rail accommodating the unlocking slider, and preferably, the central axis of the plug-in part is collinear with the central axis of the slide rail.

[0028] Further, the side wall of the battery pack is also provided with an output terminal, and the inner wall of the battery compartment has an input terminal that is in butt joint with the output terminal, and the output terminal is electrically connected with the input terminal to supply power to the working tool.

[0029] Further, the battery pack is provided with at least two unlocking sliders on both sides in the length direction, and the handle controls the movement of the two unlocking sliders through the first rotating shaft and the second rotating shaft, respectively, and the unlocking sliders, the output terminal and the plug-in part on the same side wall of the battery pack are arranged in sequence from top to bottom along the same straight line.

[0030] Further, the ratio of the length of the output terminal on the battery pack to the height of the battery pack is less than or equal to 0.3; the battery pack shell forms an accommodation space for accommodating the output terminal, and the output terminal is at least partially located in the accommodation space.

[0031] Further, the shell of the battery pack is composed of an upper shell and a lower shell, the upper shell and the lower shell enclose an accommodation cavity for accommodating the battery cell module in the height direction of the battery pack, the output terminal is arranged on the lower shell, and the locking surface cooperating with the locking structure is arranged on the upper shell; the ratio of the height of the upper shell to the height of the lower shell is greater than or equal to 1 / 2.

[0032] Further, the ratio of the plug-in part on the side wall of the battery pack to the height of the battery pack is greater than or equal to 1 / 2 and less than or equal to 2 / 3, so as to ensure the smoothness and stability when the battery pack is inserted into the battery compartment; the plug-in part is provided with a sliding groove on both sides, and the thickness of the sliding groove is gradually changed, so as to facilitate the butt joint when the battery pack is inserted into the battery compartment; the output terminal of the battery pack is located between the sliding grooves, and the output terminal is electrically connected with the BMS control board of the battery pack; the BMS control board of the battery pack includes a total positive lead terminal and a total negative lead terminal, the total positive lead terminal is electrically connected with the positive terminal of each output terminal of the battery pack, and the total negative lead terminal is electrically connected with the negative terminal of each output terminal of the battery pack; the output terminal of the battery pack is at least two, and the at least two output terminals are symmetrically arranged on the opposite sides of the battery pack, and the output terminal is located above the plug-in part; for some electric tools, in order to prolong the endurance time, a plurality of small battery packs are configured, the battery pack of the application has two output terminals, which can supply power to the tool at the same time, so that the electric tool can use the original small pack and the large pack of the application, making the configuration of the battery pack of the electric tool more flexible.

[0033] Further, the upper surface of the shell of the battery pack is provided with a boss to limit the rotation amplitude of the handle, the height of the boss is ≥10mm.

[0034] Further, in the embodiment of the battery pack of the present application, the handle is in sliding fit with the shell of the battery pack, the shell of the battery pack is provided with a sliding groove, at least part of the handle can move up and down along the sliding groove, the handle is U-shaped, having a holding portion and a sliding portion, the sliding portion is in fit with the sliding rail on the shell of the battery pack.

[0035] Specifically, the sliding portion has a protruding end, when the handle is moved to the extraction position, the protruding end of the sliding portion acts on the engaging member of the locking assembly, causing the engaging member to move away from the battery pack to release the locking of the battery pack by the locking device; wherein the battery compartment is provided with an unlocking device on both sides along the length direction, the handle unlocks at least two locking devices during the movement from the storage position to the extraction position.

[0036] Further, the ratio of the length of the sliding rail accommodating the sliding portion to the height of the battery pack is less than or equal to 1 / 3, the length of the sliding portion is substantially the same as the length of the sliding rail accommodating the sliding portion; wherein the weight of the battery pack is about 15Kg. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0038] Figure 1 The structure diagram of the battery pack when the handle is in the storage position in the embodiment of the present application;

[0039] Figure 2 The structure diagram of the battery pack when the handle is in the extraction position in the embodiment of the present application;

[0040] Figure 3 The exploded view of the battery pack in the embodiment of the present application;

[0041] Figure 4 The structure diagram of the battery compartment in the embodiment of the present application;

[0042] Figure 5 The structure diagram of the battery compartment in the embodiment of the present application;

[0043] Figure 6 The cross-sectional view of the battery pack fixed in the battery compartment in the embodiment of the present application;

[0044] Figure 7A sectional view of the battery pack being taken out of the battery compartment in the embodiment of the present application;

[0045] Figure 8 A structural schematic diagram of the handle of the battery pack in the embodiment of the present application;

[0046] Figure 9 A structural schematic diagram of Figure 6 a partial enlarged view thereof;

[0047] Figure 10 A partial enlarged view of Figure 7 ;

[0048] Figure 11 A structural schematic diagram of the battery pack charger in the embodiment of the present application;

[0049] Figure 12 A structural schematic diagram of the battery pack charger in the embodiment of the present application;

[0050] Figure 13 A structural schematic diagram of the inverter main body in the embodiment of the present application;

[0051] Figure 14 A top view of the inverter main body in the embodiment of the present application;

[0052] Figure 15 A structural schematic diagram of the portable power supply in the embodiment of the present application;

[0053] Figure 16 A structural schematic diagram of the outdoor work vehicle in the embodiment of the present application;

[0054] BRIEF DESCRIPTION OF DRAWINGS: battery pack-1; shell-11; cell module-12; handle-13; gripping portion-131; pivoting portion-132; first axis-10; unlocking slider-14; output terminal-15; plug-in portion-16; locking surface 101; sliding groove-100; second elastic member 141; first end portion-1321; second end portion-1322; first centering surface-A; gripping space-B; limiting portion-1110; contact surface-140; BMS control panel-18; sliding portion-133; battery compartment-2; elastic device-21; input terminal-22; locking opening-20; locking device-3; mounting bracket-30; clamping member-31; first elastic member-32; clamping surface-310; mounting portion-36; charger-6; portable power supply-5; outdoor work vehicle-4. DETAILED DESCRIPTION

[0055] For the purposes of promoting an understanding of the principles of the application, reference will now be made to the embodiments illustrated in the drawings. The embodiments shown are intended to be illustrative only and not limiting of the present application. The present application will become more fully understood from the detailed description and the accompanying drawings.

[0056] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0057] The preferred embodiments of the battery pack release structure, the battery pack and the outdoor tool comprising the battery pack release structure will be described below in conjunction with the accompanying drawings.

[0058] Embodiment 1:

[0059] Please refer to Figures 1-3 The present application provides a battery pack 1 comprising a cell module 12 having a plurality of cells, a housing 11 accommodating the cell module 12, and a handle 13 rotatable around the battery pack 1, the handle 13 being U-shaped and having a gripping portion 131 and pivot portions 132 at both ends of the gripping portion 131, the gripping portion 131 extending substantially along the length direction of the battery pack 1, and the handle 13 being rotationally connected to the battery pack 1 around a first axis 10. The weight of the battery pack 1 is greater than or equal to 15 Kg, and the shape of the handle 13 is flat, and the thickness of the handle 13 is greater than or equal to 15 mm.

[0060] The housing 11 of the battery pack 1 is composed of an upper housing and a lower housing, a plurality of bolt holes are formed along the inner walls of the upper housing and the lower housing, and the upper housing and the lower housing are fixedly connected along the height direction of the battery pack 1 through the bolt holes. The length ratio of the upper housing and the lower housing along the height direction is greater than or equal to 1 / 2, which ensures that the cell module 12 is more easily placed in the accommodating cavity of the housing 11. As shown in the drawings, the battery pack 1 is a cube, the capacity of the battery pack 1 is greater than 40 Ah, the capacity to weight ratio of the battery pack 1 is greater than or equal to 2.5 Ah / kg, the handle 13 extends along the length direction of the battery pack 1, and the length of the handle 13 is substantially the same as the length of the battery pack 1. In this embodiment, the length of the battery pack 1 is about 400 mm, the width of the battery pack 1 is about 180 mm, the height of the battery pack 1 is about 241 mm, the cells in the battery pack 1 are lithium iron phosphate cells, and the rated voltage of the battery pack 1 is greater than 50 V.

[0061] Please refer to Figures 1-2 The outer wall opposite to the length direction of the battery pack 1 is provided with a movable unlocking slider 14, and the end of the handle 13 abuts against the unlocking slider 14. During the rotation of the handle 13, the unlocking slider 14 moves in the height direction of the battery pack 1. The outer wall of the shell 11 of the battery pack 1 is further provided with an output terminal 15 and a plug-in part 16. In the embodiment, the battery pack 1 has two output terminals 15 and two plug-in parts 16, and the unlocking slider 14, the output terminal 15 and the plug-in part 16 are arranged in sequence from top to bottom along the height direction of the battery pack 1.

[0062] Please refer to Figures 4-7 The battery pack releasing structure comprises the battery pack 1 and a battery compartment 2 accommodating the battery pack 1. The battery compartment 2 has an accommodating space, and at least part of the battery pack 1 is located in the accommodating space. The side of the battery compartment 2 is provided with a locking device 3, and a clamping piece 31 is movably installed in the locking device 3. When the handle 13 of the battery pack 1 is rotated, the unlocking slider 14 moves up and down to drive the clamping piece 31 to move away from the battery pack 1. The locking device 3 comprises a mounting bracket 30, which is fixed to the outer wall of the battery compartment 2 by screws. The mounting bracket 30 comprises a locking groove, and the clamping piece 31 is movably installed in the locking groove and abuts against the mounting bracket 30 through a first elastic piece 32. The side wall of the battery compartment 2 is provided with a lock opening 20, and the clamping piece 31 extends out of the lock opening 20 under the action of the first elastic piece 32. The clamping piece 31 retracts into the lock opening 20 under the action of the unlocking slider 14. The clamping piece 31 is locked with the battery pack 1 in the extended state, and the clamping piece 31 is unlocked with the battery pack 1 in the retracted state. The surface of the shell 11 of the battery pack 1 has a locking surface 101 matched with the clamping piece 31. The clamping piece 31 and the locking surface 101 constitute a lock assembly to lock the battery pack 1 in the battery compartment 2.

[0063] Please refer to Figure 8 The end of the handle 13 has a first end 1321 and a second end 1322, and the distance between the second end 1322 and the first axis 10 is greater than the distance between the first end 1321 and the first axis 10. When the handle 13 is in the lying storage position, the first end 1321 of the handle 13 is in contact with the unlocking slider 14. When the handle 13 is in the extraction position, the second end 1322 of the handle 13 is in contact with the unlocking slider 14. Please refer to Figures 1-2The unlocking slider 14 moves along the surface of the battery pack 1 in a direction substantially perpendicular to the direction of extension of the first axis 10. When the handle 13 is rotated from the storage position to the extraction position, the unlocking slider 14 moves downward along the height of the battery pack 1 under the action of the end of the handle 13. The distance X between the second end 1322 of the handle 13 and the first axis 10 is greater than the distance Y between the first end 1321 and the first axis 10, and the difference in distances XY is ≥ 8 mm.

[0064] Please refer to Figures 6-7 The unlocking slider 14 has a bent portion near the handle 13. The battery pack 1 housing 11 has a sliding groove 100 that matches the unlocking slider 14. A second elastic member 141 is provided between the battery pack 1 housing 11 and the bent portion. Under the force of the second elastic member 141, the unlocking slider 14 always maintains contact with the end of the handle 13. Specifically, a hook is provided at the bent portion, and the battery pack 1 housing 11 has a slot that matches the hook. The slot and hook cooperate to prevent the unlocking slider 14 from disengaging from the sliding groove 100 under the action of the second elastic member 141.

[0065] Please refer to Figures 9-10 The locking member 31 of the locking device 3 has a locking surface 310. The end of the unlocking slider 14 abuts against the locking surface 310 of the locking member 31, allowing the locking member 31 to move left and right. The locking surface 310 has an angle with the horizontal direction of 45°, and the unlocking slider 14 has a contact surface 140 adapted to the locking surface 310. This configuration makes the downward displacement of the unlocking slider 14 substantially equal to the horizontal displacement of the locking member 31. The locking member 31 has a depth that matches the locking surface 101 on the surface of the battery pack 1. The depth is ≥8mm, which is approximately equal to the downward distance of the unlocking slider 14. In order to prevent the edge of the locking member 31 from contacting the locking surface 101 when it is in the retracted state, causing the battery pack 1 to be removed unsmoothly, the end of the locking member 31 is chamfered.

[0066] Please refer to Figures 6-7 Two locking devices 3 are provided along the lengthwise sides of the battery compartment 2. The engaging members 31 of the locking devices 3 are positioned at a distance from the bottom of the battery compartment 2 that is greater than half the depth of the battery compartment 2. That is, the battery compartment 2 has a first center plane A perpendicular to its height, and the locking devices 3 are located above this first center plane A. This arrangement shortens the travel distance of the unlocking slider 14 when unlocking the battery pack 1, while also providing greater stability within the battery compartment 2. Similarly, the locking surface 101 on the battery pack 1, which engages with the engaging members 31, is also positioned at a distance from the bottom of the battery pack 1 that is greater than half its height.

[0067] Please refer to Figures 6-7The end of the handle 13 of the battery pack 1 has a pivot hole, the battery pack 1 shell 11 has a through hole corresponding to the pivot hole, and a metal pin passes through the pivot hole and the through hole to rotationally connect the handle 13 and the battery pack 1 shell 11. Among them, a metal sleeve is also arranged in the pivot hole and / or the through hole, and the metal sleeve is interference-fitted in the pivot hole and / or the through hole. In this way, the metal pin is prevented from causing wear to the handle 13 and / or the battery pack 1 shell 11 during rotation, and the strength of the handle 13 is improved. At least one end of the metal pin is formed with a boss, and the metal pin is limited in the pivot hole by the cooperation of the stop washer and the boss, thereby preventing the metal pin from coming off. The handle 13 of the battery pack 1 is also coated with soft glue, and the soft glue has a shape matching the fingers, so that the user can take out the battery pack 1 with one hand or take out the battery pack 1 with both hands. Optionally, a third elastic member is arranged at the rotation shaft of the handle 13, and the third elastic member is a torsion spring. When the battery pack 1 does not need to be taken out, the handle 13 is automatically reset to the storage position under the action of the torsion spring.

[0068] Please refer to Figure 3 A plurality of battery cells in the battery pack 1 are arranged in parallel along the width direction of the battery pack 1 in the battery pack 1 shell 11, the battery pack 1 includes a BMS control board 18 for controlling the charging and discharging of the plurality of battery cells and a support for supporting the plurality of battery cells, the BMS control board 18 is located above the support, the BMS control board 18 is located above the battery cell module and is fixed to the support of the battery cell, the ratio of the length of the BMS control board 18 to the length of the battery cell support is greater than or equal to 1 / 2, and preferably the ratio of the length of the BMS control board 18 to the length of the battery cell support is greater than or equal to 0.7.

[0069] Please refer to Figure 2 When the handle 13 is rotated to the extraction position, a holding space B is formed between the handle 13 and the upper surface of the battery pack 1 shell 11, the height of the holding space B is greater than or equal to 20 mm, a limiting portion 1110 is formed on the upper surface of the battery pack 1 shell 11, the limiting portion 1110 accommodates the handle 13 in a groove formed on the upper surface of the battery pack 1, and the limiting portion 1110 is used to limit the rotation amplitude of the handle 13. In the embodiment, the height of the limiting portion 1110 is greater than or equal to 10 mm.

[0070] Please refer to Figures 1-2, the battery pack 1 is provided with two unlocking sliders 14 on both sides in the length direction, the unlocking sliders 14, the output terminals 15 and the plug-in parts 16 are arranged in sequence from top to bottom along the same straight line; wherein the ratio of the length of the output terminal 15 of the battery pack 1 to the height of the battery pack 1 is less than or equal to 0.3, and the shell 11 of the battery pack 1 has a containing space for containing the output terminal 15. The plug-in part 16 is located on the lower side of the battery pack 1, and the ratio of the length of the plug-in part 16 to the height of the battery pack 1 is greater than or equal to 1 / 2, so as to ensure the smoothness and stability when the battery pack 1 is inserted into the battery compartment 2, and the plug-in part 16 is provided with a sliding groove 100 on both sides, and the thickness of the sliding groove 100 is gradually changed, so as to facilitate the butt joint when the battery pack 1 is inserted into the battery compartment 2, and the inner wall of the battery compartment 2 is provided with a mounting part 36 matched with the plug-in part 16.

[0071] Please refer to Figure 4 , Figure 7 and Figure 14 , the bottom of the battery compartment 2 is provided with an elastic device 21, the elastic device 21 includes a plurality of elastic members, and the plurality of elastic members are uniformly distributed on the bottom surface of the battery compartment 2, and after the locking device 3 on the battery compartment 2 is unlocked, the battery pack 1 is popped up upward under the action of the elastic members. In this embodiment, the elastic device 21 includes six elastic members, and three elastic members are arranged on both sides along the length direction of the battery compartment 2.

[0072] Embodiment 2:

[0073] Please refer to Figures 11-16 , the present embodiment provides a battery system, which comprises a power consuming device and the battery pack 1 in the above-mentioned embodiments. The power consuming device can be a charger 6 for charging the battery pack, a portable power supply 5 with the battery pack, or an outdoor garden operation equipment 4. The main body of the power consuming device has a battery compartment 2, the battery compartment 2 at least partially contains the battery pack 1, the battery pack 1 has a plurality of output terminals 15, and the power consuming device is supplied with power by at least two output terminals 15 at the same time, and the plurality of output terminals 15 are connected in parallel.

[0074] Specifically, as described in the above-mentioned embodiments, the output terminals 15 are distributed on opposite sides of the battery pack 1, and the inner wall of the battery compartment 2 is provided with input terminals 22 matched with the output terminals 15. The battery pack 1 comprises a BMS control board 18, the BMS control board 18 has a total positive lead terminal and a total negative lead terminal, the output terminals 15 have positive terminals and negative terminals, the total positive lead terminal is electrically connected with the positive terminal of each output terminal respectively, and the total negative lead terminal is electrically connected with the negative terminal of each output terminal respectively.

[0075] The side wall of the battery compartment 2 also has a locking device 3 which cooperates with the surface of the shell of the battery pack 1 to form a locking assembly, thereby fixing the battery pack 1 in the battery compartment 2; the locking device 3 is arranged adjacent to the output terminal 15.

[0076] Specifically, if the power consuming device is a charger 6, the charger 6 has an inverter module which can convert the AC current input from outside into DC current for charging the battery pack; if the power consuming device is a portable power source 5, the portable power source at least has an inverter module which can convert the DC current of the battery pack into AC output current. Of course, the power consuming device can also be designed to receive the power of the battery pack through two input terminals, or to receive the power of the battery pack through one output terminal, and the power consuming device can also receive a small pack with a single output terminal, thereby expanding the use scenarios of the battery pack.

[0077] In another embodiment, the battery pack 1 includes a plurality of battery cell modules 12, and each output terminal 15 is electrically connected to a different battery cell module 12, and the discharge voltage of each output terminal 15 is controlled by the BMS control board 18.

[0078] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes to the technical solution and the application concept of the present application within the technical scope disclosed by the present application, and all of them should be covered within the protection scope of the present application.

Claims

1. A battery system comprising an electrical device and a battery pack, characterized in that: The electrical device includes a battery compartment having a cavity space and at least a portion of a battery pack is placed within the compartment; the battery pack is provided with a handle, and a locking device is provided on a side wall of the battery compartment. A user controls the unlocking of the locking device on the battery compartment via the handle on the battery pack, and the battery pack is automatically locked when inserted and automatically unlocked when removed; The battery comprises a plurality of output terminals, and supplies power to the electrical device simultaneously through at least two output terminals; The electrical device includes a battery compartment, which at least partially accommodates the battery pack.

2. The battery system according to claim 1, wherein: The plurality of output terminals are identical output terminals and are electrically connected.

3. The battery system according to claim 2, wherein: The output terminals are distributed on opposite sides of the battery pack, and the inner wall of the battery compartment is provided with input terminals that are docked with the output terminals.

4. The battery system according to claim 2, wherein: The output terminals are distributed on the same side of the battery pack, and the inner wall of the battery compartment is provided with input terminals that mate with the output terminals.

5. The battery system according to claim 2, wherein: The battery pack includes a BMS control board, which has a total positive lead terminal and a total negative lead terminal. The output terminal has a positive terminal and a negative terminal. The total positive lead terminal is electrically connected to the positive terminal of each output terminal, and the total negative lead terminal is electrically connected to the negative terminal of each output terminal.

6. The battery system according to claim 3 or 4, characterized in that: The side wall of the battery compartment also has a locking device, which cooperates with the shell surface of the battery pack to form a locking assembly, thereby fixing the battery pack in the battery compartment; the locking device is arranged adjacent to the output terminal.

7. The battery system according to claim 6, wherein: The battery compartment has a center plane in a direction perpendicular to the height of the battery compartment, and the distance between the locking device and the bottom surface of the battery compartment is greater than the distance between the center plane and the bottom surface of the battery compartment.

8. The battery system according to claim 1, wherein: The power-consuming device includes an inverter module, which converts input AC current into DC current that can charge the battery pack, or converts the DC current of the battery pack into AC current for output.

9. The battery system according to claim 1, wherein: The power-consuming device has a control circuit, and the control circuit is selectively electrically connected to at least one output terminal of the battery pack.

10. The battery system according to claim 1, wherein: The battery pack includes a plurality of battery cell modules, and each of the output terminals is electrically connected to a different battery cell module.

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