WO2022100466A1

WO2022100466A1 - Handle, box, battery, and electrical device

Info

Publication number: WO2022100466A1
Application number: PCT/CN2021/127689
Authority: WO
Inventors: 陈彬彬; 李乐; 王庆; 陈宜锋; 任帅; 薛丹月
Original assignee: 宁德时代新能源科技股份有限公司
Priority date: 2020-11-14
Filing date: 2021-10-29
Publication date: 2022-05-19
Also published as: CN213782122U

Abstract

The present application relates to a handle used for a battery. The battery comprises a box. The handle comprises: a first end portion, the first end portion comprising a first fixing portion used for fixing the first end portion to a first surface of the box; a second end portion, the second end portion comprising a second fixing portion used for fixing the second end portion to a second surface of the box; and a flexible body portion, configured to connect the first end portion and the second end portion so as to lift and pull the battery in two directions. According to the handle of the present application, the battery can be simultaneously lifted and pulled in two directions, so that the needs of manually carrying a battery and changing the direction and position of the battery in the application scenario such as battery replacement are met. The present application further relates to a box on which the handle is mounted, a battery comprising the box, and an electrical device comprising the battery.

Description

Handles, Cases, Batteries and Electrical Devices

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of Chinese patent application CN202022630664.X, which was filed on November 14, 2020, and is entitled "Handle, Case, Battery and Electric Device", the entire contents of which are incorporated herein by reference. .

technical field

The present application relates to the technical field of batteries, and in particular, to a handle, a case, a battery and an electrical device.

Background technique

Small batteries need to be taken out of the electrical device for charging in applications such as battery replacement, and need to be put back into the electrical device after charging is complete. During this process, since it is necessary to manually transport the battery and change the direction and position of the battery, problems such as inconvenient handling and sliding of the battery box often occur. For this reason, it is currently necessary to design a structure to solve the above-mentioned problems.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a handle, which aims to solve the problems of inconvenient handling and slipping of the battery box in application scenarios such as power exchange.

Other objects of the present application are to provide a case, a battery and an electrical device.

A first aspect of the present application relates to a handle for a battery, the battery includes a case, and the handle includes:

a first end portion, the first end portion includes a first fixing portion, and the first fixing portion is used for fixing the first end portion to the first surface of the box body;

a second end portion, the second end portion includes a second fixing portion, and the second fixing portion is used for fixing the second end portion to the second surface of the box body;

The flexible body portion is configured to connect the first end portion and the second end portion to enable pulling the battery from two directions.

In some embodiments of the present application, the first fixing part includes an insert piece, and the insert piece is configured to be inserted into a corresponding slot formed on the case body, and fixed to the case body by means of a fastener.

In some embodiments of the present application, the insert piece is a straight insert piece or an L-shaped insert piece, and the insert piece includes a slit, and the flexible body portion is fixed to the insert piece through the slit.

In some embodiments of the present application, at least one of the first fixing portion and the second fixing portion includes a locking member, and the locking member is configured to be inserted into a corresponding locking groove formed on the box body along a first angle and along the second The angle is fixed to the surface of the box.

In some embodiments of the present application, the insertion length of the locking member is greater than the locking length of the locking groove.

In some embodiments of the present application, the catch has a C-shape, and the flexible body portion is fixed to the catch.

In some embodiments of the present application, the handle further includes at least one limiting portion, and the limiting portion passes through a limiting slot opened in the box body to limit at least a part of the limiting portion in the limiting slot.

In some embodiments of the present application, the limiting portion includes a step portion that is engaged with the limiting groove.

A second aspect of the present application relates to a case for mounting the handle according to the first aspect of the present application, the handle being configured to lift the case from two directions.

In some embodiments of the present application, at least the first surface and the second surface of the box body are formed with accommodating parts, the flexible main body part is located in the accommodating parts, and the flexible main body part is disposed in the accommodating parts.

A third aspect of the present application relates to a case mounted with a handle for a battery, comprising:

an accommodating part, the accommodating part is disposed at least on the first surface and the second surface of the box body, the flexible main part of the handle is configured to surround the box body and is arranged in the accommodating part;

The limiting part restricts at least a part of the flexible main body part in the accommodating part, so as to realize pulling the battery from two directions.

A fourth aspect of the present application relates to a battery, the battery comprising: the case according to the second or third aspect of the present application, where the case is used for accommodating battery cells.

A fifth aspect of the present application relates to an electrical device comprising the battery according to the fourth aspect of the present application.

The case in which the handle according to the present application is installed has the following advantages:

In the present application, the first end and the second end of the handle are respectively fixed to the first surface and the second surface of the box body, and then the flexible main body for connecting the first end and the second end is pulled by pulling The battery can be pulled from two directions at the same time, which satisfies the need to manually transport the battery and change the direction and position of the battery in application scenarios such as battery replacement. question.

Description of drawings

In order to further illustrate the handle according to the present application, the case on which the handle is installed, the battery including the case, and the electrical device including the battery, the present application will be described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, The drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from the drawings without creative efforts. in:

1 is a schematic structural diagram of a vehicle according to an embodiment of the present application;

2 is a schematic perspective view of a battery according to an embodiment of the present application;

FIG. 3 is an exploded schematic view of the battery shown in FIG. 2 , wherein a case and a handle constituting the battery are shown, but for the sake of clarity, the battery cells contained in the case are not shown;

FIG. 4 is a schematic diagram of another angle of the part circled by the circle A of the battery shown in FIG. 2 , which shows an embodiment of the first fixing part fixed to the top of the box;

FIG. 5 is a schematic diagram of the part circled by the circle B of the battery shown in FIG. 2 , and the figure shows the limiting part passing through the limiting groove opened in the box body;

Fig. 6 is the schematic diagram of the part circled by the circle C of the battery shown in Fig. 2, this figure shows one embodiment of the second fixing part that is fixed to the lower part of the case;

Fig. 7 is the schematic diagram of the limiting groove of the box body with the handle removed in Fig. 5;

Fig. 8 shows another embodiment of the first fixing part fixed to the top of the box;

Figure 9 is an exploded schematic view of the embodiment shown in Figure 8;

Fig. 10 shows another embodiment of the second fixing part fixed to the lower part of the box;

Figure 11 is an exploded schematic view of the embodiment shown in Figure 10;

Fig. 12 is the schematic diagram of the upper limit groove located above the box body;

Figure 13 is a schematic diagram of a lower limit groove located below the box body;

14 is an exploded schematic diagram of a battery according to another embodiment of the present application;

Fig. 15 is a partial schematic view of the receiving portion on the first surface of the case.

In the drawings, the figures are not drawn to actual scale.

Detailed ways

The handle, the case, the battery and the electrical device of the present application will be described below with reference to the accompanying drawings, wherein the same components are denoted by the same reference numerals.

It should be clear that the embodiments described in this specification only cover a part of the embodiments of the present patent application, but not all the embodiments. Based on the embodiments described in the specification, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the technical field of this application; the terms used in this application's specification are only for describing specific implementations The purpose of this example is not to limit the application; the terms "comprising" and "having" and any variations thereof in the description and claims of this application and the above description of the drawings are intended to cover the non-exclusive inclusion. The terms "first", "second" and the like in the description and claims of the present application or the above drawings are used to distinguish different objects, rather than to describe a specific order or primary and secondary relationship.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the embodiments of this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. ground connection; it can be installed directly or indirectly through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

Based on the same orientation understanding, in the description of this application, the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

In the present application, the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application. The battery cell may be in the form of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which are not limited in the embodiments of the present application. The battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square-shaped battery cells, and soft-pack battery cells, which are not limited in the embodiments of the present application.

The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the batteries mentioned in this application may include battery modules or battery packs, and the like. Batteries typically include a case for enclosing one or more battery cells. The box can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.

The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive and negative plates to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer, and the positive electrode active material layer is not coated. The current collector coated with the positive electrode active material layer serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer, The current collector coated with the negative electrode active material layer was used as the negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. In order to ensure that a large current is passed without fusing, the number of positive tabs is multiple and stacked together, and the number of negative tabs is multiple and stacked together. The material of the diaphragm can be PP or PE, etc. In addition, the electrode assembly may be a wound structure or a laminated structure, and the embodiment of the present application is not limited thereto.

The applicant found that: small batteries need to be manually transported in applications such as battery replacement, and when changing the direction and position of the battery, try to set up a structure on the box that is convenient for manual transportation, such as opening on the box for hand grasping groove. However, the applicant found that when the battery is in the electrical device, it is difficult to take out the battery from the electrical device by grasping the groove provided on the box with both hands due to the shielding of other mechanisms. The applicant found through research that if the direction and position of the battery are to be converted in the battery swap application, it is necessary to be able to pull the battery from two directions at the same time. In view of this, the present application solves the above technical problem by providing a handle that can pull the battery from two directions.

The technical solutions described in the embodiments of this application are all applicable to various devices using batteries, such as mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships, and spacecraft. For example, the spacecraft includes Planes, rockets, space shuttles and spaceships, etc.

It should be understood that the technical solutions described in the embodiments of the present application are not only applicable to the above-described devices, but also applicable to all devices using batteries. However, for the sake of brevity, the following embodiments are described by taking electric vehicles as an example. As shown in FIG. 1 , which is a schematic structural diagram of a vehicle 1 according to an embodiment of the application, the vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle car etc. A drive motor 2 is attached to the front axles of the two front wheels of the vehicle 1 . In addition, the vehicle 1 is also equipped with a controller 3 and a battery 10 . The controller 3 and battery 10 are typically positioned at appropriate locations on the main shaft of the vehicle 1 to control the operation of the various components of the vehicle 1 and to provide driving power to the vehicle 1, as is well known to those of ordinary skill in the art.

As shown in FIGS. 2 and 3 , it is a three-dimensional schematic diagram and an exploded schematic diagram of a battery 10 according to a specific embodiment of the present application. The battery 10 includes a case 11 having a substantially rectangular parallelepiped shape, and at least one battery cell (not shown in the figure) is accommodated in the case 11 .

In order to meet different power requirements, the box 11 can accommodate a plurality of battery cells, wherein the plurality of battery cells can be connected in series or in parallel or in a mixed connection, and a mixed connection refers to a mixture of series and parallel connection. The battery 10 may also be referred to as a battery pack. Optionally, a plurality of battery cells can be connected in series or in parallel or mixed to form a battery module, and then a plurality of battery modules can be connected in series or in parallel or mixed to form the battery 10 . That is to say, a plurality of battery cells can directly form the battery 10 , or a battery module can be formed first, and then the battery module can form the battery 10 .

The box 11 includes a front wall 111 , a rear wall 113 , a top cover 112 , a bottom wall (covered by other walls in the drawings), and two opposite side walls. It should be noted that the terms "front wall", "rear wall", etc. used here are only determined based on the placement direction of the box body 11 shown in FIGS. wall.

Based on the direction in which the battery 10 needs to be pulled in practical applications, receiving parts are formed on at least two adjacent surfaces of the front wall 111 , the rear wall 113 , the top cover 112 , the bottom wall and the two side walls. In the embodiment shown in FIGS. 2 and 3 , the housing 11 is formed with receiving portions on both the surface of the top cover 112 as the first surface and the surface of the front wall 111 as the second surface. However, for those of ordinary skill in the art, according to the needs of the actual situation, accommodating parts can be formed on the surface of the top cover 112, the surface of the front wall 111, the surface of the bottom wall and the surface of the rear wall 113, Alternatively, a receiving portion and the like are formed on the surface of the top cover 112 , the surface of at least one side wall, and the surface of the bottom wall. Such variations should be readily apparent to those of ordinary skill in the art.

As shown in FIG. 3 , the accommodating portion includes a first accommodating groove 121 formed on the surface of the front wall 111 and a second accommodating groove 122 formed on the surface of the top cover 112 . Optionally, a first accommodating groove 121 and a second accommodating groove 122 are formed along the approximate centerlines of the front wall 111 and the top cover 112 . The first 121 and second 122 accommodating grooves are optionally flat strip grooves sized to accommodate the handle 13, eg, made of a single braided tape or other tape-like piece. When the first accommodating groove 121 and the second accommodating groove 122 are located approximately at the center of the front wall 111 and the top cover 112 , the first accommodating groove 121 and/or the second accommodating groove 122 may partially expand outward into an arc-shaped portion 124 to For the operator to put his palm into the first accommodating groove 121 and/or the second accommodating groove 122 and firmly hold the handle 13 accommodated therein. In addition, considering the thickness of the top cover 112 , the depth of the second accommodating groove 122 formed on the surface of the top cover 112 may be slightly larger than the depth of the first accommodating groove 121 formed on the surface of the front wall 111 . Of course, other accommodating parts can also be used to replace the first and second

accommodating grooves

121 and 122 . All the above modifications should fall within the protection scope of the present application.

An interface 123 is formed at other positions of the top cover 112 where the second accommodating groove 122 is not provided, such as a certain corner position, for electrically connecting the battery cells accommodated in the box 11 with cables leading to the outside.

Continuing to refer to FIG. 3 , the handle 13 mounted to the box body 11 will be described below.

The handle 13 includes a first end portion 131 , a second end portion 132 , and a flexible body portion 130 connecting the first end portion 131 and the second end portion 132 . The first end portion 131 includes a first fixing portion 133 for fixing the first end portion 131 to the first surface of the box body 11 , for example, the surface of the top cover 112 of the box body 11 . Similarly, the second end portion 132 includes a second fixing portion 134 for fixing the second end portion 132 to the second surface of the box body 11 , eg, the surface of the front wall 111 of the box body 11 . The flexible body portion 130 is optionally a belt, such as a belt made of a single belt, braided belt, or other suitable flexible material, so long as it is of suitable strength and reasonable cost. The flexible body portion 130 has suitable elasticity and ductility, and can be bent at the junction of two adjacent surfaces of the box body 11.

The handle 13 can also be equipped with a rubber cover 135 for the operator to hold the battery 10 when pulling. Optionally, the rubber cover 135 is arranged in the flexible main body part 130 at a position corresponding to the arc-shaped part 124 , so as to cooperate with the arc-shaped part 124 to facilitate the operator's hand to hold the handle 13 .

In addition, the handle 13 optionally includes at least one limiting portion 136 , and the limiting portion 136 passes through a limiting slot 1361 opened in the box body 11 to limit at least a part of the limiting portion 136 in the limiting slot 1361 .

Referring to FIG. 1 , FIG. 4 and FIG. 6 , the first fixing part 133 and the second fixing part 134 surrounded by circles A and C in FIG. 1 are shown. In this example, the first fixing portion 133 is used to fix the first end portion 131 of the handle 13 to the upper portion of the case 11, and the second fixing portion 134 is used to fix the second end portion 132 of the handle 13 to the case the lower part of the body 11. However, those skilled in the art can understand that the fixing positions of the first and second fixing

parts

133 and 134 can be exchanged with each other, or one or both of the first and second fixing

parts

133 and 134 can be replaced by other fixing structures. should be regarded as falling within the scope of protection of the present application.

It can be seen that in the area enclosed by the circle A shown in FIG. 4 , the flexible main body part 130 fixes the first end part 131 to the surface of the top cover 112 of the box body 11 through the first fixing part 133 . The first fixing portion 133 includes a substantially L-shaped insert piece 1331 configured to be inserted into a corresponding slot 1335 formed on the box body 11 and fixed to the box body 11 by means of fasteners 1336 . As shown in FIG. 4 , the L-shaped tabs 1331 are integrally made of a first tab part 1332 parallel to the surface of the top cover 112 and a second tab part 1333 perpendicular to the surface of the top cover 112 .

The first tab part 1332 is formed with a slit 1334 into which the flexible main body part 130 can be inserted, and one end of the flexible main body part 130 can be fixed to the L-shape in a manner of passing through the slit 1334 and being wound around the first tab part 1332 The first insert portion 1332 of the insert 1331 .

The second insert portion 1333 is used to be inserted into the corresponding slot 1335 formed on the box body 11 . Strictly speaking, the slot 1335 includes a concave portion formed at one end of the second accommodating groove 122 of the top cover 112 , and the concave portion and the edge of the rear wall 113 of the box body 11 together constitute the slot 1335 . At least one, optionally a pair of screw holes are formed on the second insert portion 1333 , and at least one, optionally a pair of matching screw holes are also formed on the rear wall 113 of the box body 11 . The size of the mating screw holes on the rear wall 113 and the size of the screw holes on the second tab portion 1333 are adapted to each other so that at least one, optionally a pair of fasteners 1336 can pass through these screw holes to attach the first The two blade parts 1333 are fastened in the slot 1335 , so that the flexible main body part 130 fixes the first end part 131 to the surface of the top cover 112 of the box body 11 through the first fixing part 133 .

Similarly, in the area enclosed by the circle C shown in FIG. 6 , the flexible main body part 130 fixes the second end part 132 to the surface of the front wall 111 of the box body 11 through the second fixing part 134 . Different from the first fixing portion 133 in FIG. 4 , the second fixing portion 134 includes a straight-insertion piece 1341 , the straight-insertion piece 1341 is configured to be inserted into a corresponding slot 1345 opened on the box body 11 , and is fastened by means of a Piece 1346 is fixed to case 11 . As shown in FIG. 6 , the straight-insertion piece 1341 is composed of a flat metal sheet parallel to the surface of the front wall 111 of the box body 11 , and the straight-insertion piece 1341 is formed with a slit 1344 into which the flexible main body portion 130 can be inserted, The flexible main body part 130 can be fixed to the in-line sheet 1341 in a manner of passing through the slit 1344 and being wound around the in-line sheet 1341 .

The first accommodating groove 121 formed on the surface of the front wall 111 of the box body 11 is welded with an angle steel sheet 1342 at a position where it meets the bottom wall of the box body 11 . One end of the angle steel sheet 1342 is welded to the bottom wall, and the other end and the first accommodating groove 121 together form a slot 1345. At least one, optionally a pair of screw holes are formed on the straight insert piece 1341 , and at least one, optionally a pair of matching screw holes are also formed on the angle steel sheet 1342 . The size of the mating screw holes on the angle steel sheet 1342 and the size of the screw holes on the straight insert piece 1341 are adapted to each other, so that at least one, optionally a pair of fasteners 1346 can pass through these screw holes to attach the straight insert piece. 1341 is fastened in the slot 1345 , so that the flexible body portion 130 fixes the second end portion 132 to the surface of the front wall 111 of the case 11 through the second fixing portion 134 . By arranging the angle steel sheet 1342 and connecting and fixing the straight insert sheet 1341 and the angle insert sheet 1342, it is possible to avoid punching holes in the box body 11, while ensuring that the handle is fixed on the surface of the front wall 111 of the box body 11, and the air of the box body 11 is ensured. tightness.

Optionally, a straight steel sheet welded to the front wall 111 of the box body 11 can be used to replace the angle steel sheet 1342 welded to the bottom wall as described above, and such a replacement should be easy for those skilled in the art to think of of.

Please refer to FIG. 1 , FIG. 5 and FIG. 7 , which show the limiting portion 136 surrounded by the circle B in FIG. 1 and the limiting groove 1361 opened in the box body 11 .

The position of the limiting portion 136 on the flexible main body portion 130 corresponds to the junction of two adjacent surfaces of the box body 11 , so that the limiting portion 136 can pass through the limiting groove 1361 opened in the box body 11 to At least a part of the limiting portion 136 is limited in the limiting groove 1361 . The limiting portion 136 is optionally made of a hard material such as rubber, so as to be more firmly held in the limiting groove 1361 . In this example, the limiting portion 136 includes a step portion 1362 that is engaged with the limiting groove 1361 .

Continuing to refer to FIG. 5 and FIG. 7 , the limiting groove 1361 is designed in the form of an inverted T-shaped groove. This design has the following two advantages: on the one hand, it is convenient to insert the flexible main body part 130 into the limiting groove 1361; Specifically, the operator first locally applies force to the flexible body portion 130 to stretch the flexible body portion 130 having elasticity and extensibility. Next, at least a part of the flexible main body 130 except the limiting part 136 is inserted into the limiting groove 1361 after being bent along the center line, and then the bent part is unfolded and laid flat in the limiting groove 1361 . After that, stop applying force to the flexible main body portion 130. Since the flexible main body portion 130 itself has elasticity and ductility, the flexible main body portion 130 will tend to return to its original state, so that the step portion 1362 serving as the limiting portion 136 faces the inverted T. The shaped limiting slot 1361 moves, and is finally snap-fitted and firmly held in the limiting slot 1361 .

An embodiment of the battery 10 according to the present application has been specifically described above, but for those skilled in the art, various modifications can also be made to the battery 10 based on this embodiment, and such modifications should all fall within the scope of this application. within the scope of protection.

For example, FIGS. 8 to 11 show another alternative to the first fixing portion 233 and the second fixing portion 234 of the handle 13 . This alternative method introduces an inverted T-shaped groove for the limiting groove into the fixing portion to replace the fastener-type fixing structure adopted in the previous specific embodiment. In this way, when the handle 13 is assembled on the battery 10 , the time for tightening the fastener can be saved, thereby improving the assembly efficiency of the handle 13 .

Specifically, referring to FIGS. 1 , 8 and 9 , the first fixing part 233 for fixing one end of the flexible body part 130 to the upper part of the box body 11 is shown; with reference to FIGS. 1 , 10 and 11 , the A second fixing part 234 for fixing the other end of the flexible body part 130 to the lower part of the box body 11 is provided, wherein the structures of the first fixing part 233 and the second fixing part 234 are basically the same.

As shown in FIGS. 1 , 8 , 9 and 11 , one end of the flexible body portion 130 is wrapped around and fixed to a catch 2331 , which is usually made of metal or other hard material. The catch 2331 optionally has a substantially C-shaped shape, in other words, the catch 2331 is made in the form of a rectangular collar, having a first long side with a notch and a second long side without a notch that are substantially parallel to each other. A long side and a first short side and a second short side that are substantially parallel to each other. The length of the second long side of the locking piece 2331 without a notch is defined as the "insertion length L1 of the locking piece 2331". The insertion length L1 of the locking piece 2331 should not be less than or slightly larger than the width of the flexible main body part 130 , so that the flexible main body part 130 is wrapped around the second long side of the locking piece 2331 .

Alternatively, the first fixing part 233 or the second fixing part 234 may further include a flexible sleeve part 2332 integrally formed at one end of the flexible main body part 130 .

Referring to FIGS. 9 and 11 , a locking groove 2333 is formed on the top of the rear wall 112 of the box body 11 , and the locking length L2 of the locking groove 2333 along the box body 11 is smaller than the insertion length L1 of the locking piece 2331 . With the above design, the operator can insert the locking member 2331 into the locking groove 2333 by inclining the locking member 2331 by a first angle, and restore the locking member 2331 to be parallel to the locking groove 2333 or the rear wall 112 of the box 11 after insertion. second angle. Since the insertion length L1 of the locking member 2331 is greater than the locking length L2 of the locking groove 2333, that is, the length of the side where the locking member 2331 abuts against the box body 11 is greater than the locking length L2 of the locking groove 2333, the locking The stopper 2331 cannot withdraw out of the box body 11 through the locking groove 2333 , and is thus fixed on the surface of the box body 11 . Compared with the previous embodiment, this embodiment avoids operations such as bolting or welding, which improves the assembly efficiency of the battery.

In order to accommodate the locking member 2331 entering into the box body 11 , a punching structure 2334 for accommodating the locking member 2331 needs to be formed in the box body 11 . The punching structure 2334 can be clearly seen in FIG. 11 . As mentioned earlier, the size of the punching structure 2334 is completely determined by the size of the locking piece 2331 and the distance between the locking groove 2333 and the edge of the rear wall 113 of the box body 11 . high.

Those skilled in the art can understand that, in the handle 13 used in the battery 10 according to the present application, both the first and second fixing

parts

133 and 134 can be designed as fasteners used in specific embodiments. The fixing structure, the first and second fixing

parts

233 and 234 can both be designed as a snap-fit type fixing structure used in an alternative way, and one of the two fixing parts can also be designed as a fastener type fixing structure, and the other can be designed as a fastener type fixing structure. One is designed as a snap-fit fixing structure. For those of ordinary skill in the art, any one of the above-mentioned structures for the fixing portion according to different requirements should fall within the protection scope of the present application.

In addition, Figures 12 and 13 also show a variety of alternatives to the

limit portions

236 and 336.

For example, the limiting groove 1361 formed on the box body 11 may be provided on the top cover 112 of the box body 11 . As shown in FIG. 12 , a T-shaped groove into which the flexible main body part 130 can be inserted is formed at a substantially central position of at least one edge of the top cover 112 , and the T-shaped groove can be used as an upper limit groove for limiting the position of the flexible main body part 130 2361.

Alternatively, as shown in FIG. 13 , a T-shaped groove may also be formed at the lower edge of the box body 11 as a lower limit groove 3361 for limiting the position of the flexible main body 130 .

FIG. 14 is an exploded schematic view of a battery according to another embodiment of the present application, and FIG. 15 is a partial schematic view of a receiving part located on the first surface of the case body. It can be seen that the case is mounted with a handle 13 for the battery 10, including at least receiving portions formed on the front wall 111 and the rear wall 113 of the case, and the flexible body portion 130 of the handle 13 is configured to surround the case and accommodated in the accommodating portion. The box body further includes at least one upper limit slot 2361 , the upper limit slot 2361 confines at least a part of the flexible main body part 130 in the accommodating part, so as to realize pulling the battery 10 from two directions.

More specifically, a pair of upper limit grooves 2361 are provided on opposite edges of the top cover 112 of the battery 10 , and accommodating portions are provided on the front wall 111 and the rear wall 113 of the battery 10 , wherein the accommodating portions formed in the front wall 111 It is the first accommodating groove 121 , and the accommodating portion formed on the rear wall 113 is the second accommodating groove 122 . Thus, the flexible main body 130 of the handle 13 can pass through the upper limit groove 2361 and be accommodated in the first accommodating groove 121 and the second accommodating groove 122 on the front wall 111 and the rear wall 113 . Compared with the previous embodiment, the handle 13 of this embodiment adopts a four-sided surrounding design, and is limited by the top cover 112 , the first accommodating groove 121 and the second accommodating groove 122 , and its structure is more concise.

Although the handle, the case, the battery and the electrical device of the present application have been described above with reference to several embodiments, those skilled in the art should realize that the above examples are only for illustration, but not as a LIMITATIONS ON THIS APPLICATION. For example, in addition to the fastener type fixing structure and the snap fit type fixing structure described in the specification, other types of fixing parts and the like can also be designed based on common knowledge in the art. Therefore, modifications and variations of the present application may be made within the essential spirit of the claims, and these modifications and variations will fall within the scope required by the claims of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A handle is used for a battery, the battery includes a box, and the handle includes:

a first end portion, the first end portion includes a first fixing portion, and the first fixing portion is used for fixing the first end portion to the first surface of the box body;

a second end portion, the second end portion includes a second fixing portion, and the second fixing portion is used for fixing the second end portion to the second surface of the box body;

A flexible body portion configured to connect the first end portion and the second end portion to enable pulling of the battery from two directions.
The handle according to claim 1, wherein the first fixing part comprises a tab, the tab is configured to be inserted into a corresponding slot opened on the box body, and fixed by means of a fastener to the box.
The handle of claim 2, wherein the insert is a straight insert or an L-shaped insert, and the insert includes a slit through which the flexible body portion is secured to the insert piece.
The handle according to any one of claims 1 to 3, wherein the first fixing part comprises a locking piece, and the locking piece is configured to be inserted into a hole opened on the box body along a first angle. It corresponds to the locking groove and is fixed on the surface of the box body along the second angle.
The handle according to claim 4, wherein the insertion length of the locking member is greater than the locking length of the locking groove.
5. The handle of claim 4, wherein the catch has a C-shape and the flexible body portion is secured to the catch.
The handle according to any one of claims 1-6, wherein the handle further comprises at least one limiting portion, and the limiting portion passes through a limiting groove opened in the box body to At least a part of the limiting portion is limited in the limiting groove.
The handle according to claim 7, wherein the limiting portion comprises a step portion that is engaged with the limiting groove.
A case body for mounting a handle according to any one of claims 1 to 8, the handle being configured to lift the case body from two directions.
The case body according to claim 9, wherein the case body is formed with accommodating parts at least on the first surface and the second surface, and the flexible main body part is provided in the accommodating parts.
A case configured to mount a handle for a battery, comprising:

an accommodating part, the accommodating part is provided at least on the first surface and the second surface of the box body, the flexible main part of the handle is configured to surround the box body and is arranged in the accommodating part;

a limiting part, which limits at least a part of the flexible main body part in the accommodating part, so as to realize pulling the battery from two directions.
A battery comprising:

The case according to any one of claims 9 to 11, which is used for accommodating battery cells.
An electrical device comprising the battery according to claim 12.