CN219989889U - Battery cell fixing device and battery production line - Google Patents

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery core fixing device and a battery production line. The cell fixing device comprises: a base and at least one hold-down mechanism; wherein, a plurality of limit grooves are formed on the base, and at least some of the limit grooves have different sizes; the limiting grooves with different sizes are used for adapting to the battery cores with different sizes, and the limiting grooves with each size are used for placing the battery cores with the same size; the compressing mechanism is arranged on the base and is used for compressing and fixing the battery cell in the limiting groove. This electric core fixing device is through seting up a plurality of spacing grooves on the base, and the size in a plurality of spacing grooves is different in at least some spacing grooves, and the different size spacing groove can adapt to the electric core of equidimension to adopt hold-down mechanism to compress tightly fixedly the electric core in the spacing groove, prevent that the electric core from appearing the pole piece dislocation in transportation, and fixing device is small, light in weight, convenient manual transport.

Description

Battery cell fixing device and battery production line

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a battery core fixing device and a battery production line.

Background

In the current industry, the transportation of the battery cells is involved in the battery production line, the dislocation of the pole pieces easily occurs in the battery cell transportation process, the situation of poor alignment of the pole pieces is caused, and a large amount of scrapping of the battery cells is finally caused. Therefore, the fixing device is required to be arranged in the battery cell transferring process to fix the battery cells, the existing battery cell fixing device is generally only suitable for battery cells of one model size, and when the battery cells of the other model size are fixed, the other fixing device suitable for the battery cells of the corresponding model size needs to be replaced, so that the operation is complex, and time and labor are wasted.

Disclosure of Invention

In view of the foregoing drawbacks or shortcomings of the prior art, it is desirable to provide a cell fixture and a battery production line.

In a first aspect of the present utility model, there is provided a cell fixing device comprising: a base and at least one hold-down mechanism; wherein,

the base is provided with a plurality of limit grooves, and at least some of the limit grooves are different in size; the limiting grooves with different sizes are used for adapting to the battery cores with different sizes, and the limiting grooves with each size are used for placing the battery cores with the same size;

the compressing mechanism is arranged on the base and is used for compressing and fixing the battery cell in the limiting groove.

According to the battery cell fixing device provided by the utility model, the plurality of limit grooves are formed in the base, at least part of the limit grooves are different in size, the limit grooves with different sizes can be matched with battery cells with different sizes, the battery cells in the limit grooves are pressed and fixed by the pressing mechanism, the dislocation of the pole pieces of the battery cells in the transferring process is prevented, and the fixing device is small in size, light in weight and convenient to carry manually.

In addition, the cell fixing device of the utility model can also have the following additional technical characteristics:

preferably, the groove top end surfaces of the plurality of limit grooves are located on the same horizontal plane.

Preferably, in the plurality of limiting grooves, at least part of groove top end faces of the limiting grooves are located on different horizontal planes, and the sizes of the limiting grooves with the groove top end faces located on the different horizontal planes are the same or/and different.

Preferably, the dimensions of the limiting grooves with the groove top end faces located at different horizontal planes gradually increase from one end close to the bottom of the base to one end far away from the bottom of the base.

Preferably, the number of the limit grooves on the same horizontal plane is 1.

Preferably, at least one of two sides of the limiting groove adjacent to the pressing mechanism is not provided with a groove wall.

Preferably, when the number of the limit grooves is plural, the number of the limit grooves having the same horizontal plane as the groove top end surface is the same, or the number of the limit grooves having the same horizontal plane as the groove top end surface is different.

Preferably, the plurality of limit grooves with the groove top end face located on the same horizontal plane are divided into at least one group of limit grooves, and when each group of limit grooves comprises a plurality of limit grooves, the plurality of limit grooves of each group of limit grooves are distributed on the base along the first direction.

Preferably, when the plurality of limit grooves with the groove top end surfaces located on the same horizontal plane are divided into a plurality of groups of limit grooves, the plurality of groups of limit grooves are arranged on the base along a second direction, and the second direction and the first direction are located on the same plane and are not overlapped.

Preferably, the pressing mechanism is provided with a plurality of pressing mechanisms, the plurality of pressing mechanisms are respectively arranged at two ends of the base along the second direction, and the plurality of pressing mechanisms are used for pressing and fixing two sides of the same battery cell or pressing and fixing one side of different battery cells.

Preferably, the pressing mechanism includes: the pressing part and the driving part are arranged on the base; the driving part is used for driving the compressing part to move along one side close to or far away from the limiting groove.

Preferably, the driving unit includes: a connecting rod and a support; one end of the connecting rod is connected with the compressing part, the connecting rod is rotationally connected with the supporting piece, the supporting piece is arranged on the base, and when the connecting rod rotates around the supporting piece, the compressing part is driven to move along one side close to or far away from the limiting groove.

Preferably, the connecting rod and the supporting piece form a lever structure, and the pressing part is driven to move along one side close to or far away from the limiting groove by the lever structure.

Preferably, a force receiving portion is disposed at one end of the connecting rod, which is far away from the pressing portion, and the force receiving portion is a force receiving point of the lever structure.

Preferably, the force receiving part is a bearing or a roller which is rotationally connected with the connecting rod.

Preferably, the connecting rod is a telescopic rod, and the telescopic rod is driven by a first linear driving device to linearly move along the axial direction of the telescopic rod.

Preferably, the driving part further comprises an elastic member, one end of the elastic member is connected with the connecting rod, and the other end of the elastic member is connected with the supporting member or the base.

Preferably, the driving unit includes: the second linear driving device is used for driving the compressing part to linearly move along a second direction, and the third linear driving device is used for driving the second linear driving device to linearly move along a third direction so as to drive the compressing part to move along the third direction; the third direction is perpendicular to the second direction.

Preferably, the base is provided with a clearance gap at least one side of each limit groove along the first direction, and the clearance gap extends to at least the area covered by the corresponding limit groove along the first direction; the avoidance space penetrates through the top and the bottom of the base along a third direction; the first direction and the second direction are positioned on the same plane and are not coincident, and the third direction is perpendicular to the planes of the first direction and the second direction.

Preferably, a bottom of the base is provided with a bottom support, and a cavity penetrating through two ends of the base along the first direction is arranged between the bottom support and the base.

In a second aspect of the present utility model, a battery production line is provided, including the cell fixing device provided in any embodiment of the present utility model.

In the battery production line provided by the utility model, the battery cell fixing device provided by any embodiment of the utility model can be adapted to battery cells with different sizes, when the battery cells with different sizes are required to be transported and fixed, the battery cells with different sizes are fixed by using the limit grooves with different sizes in the same battery cell fixing device, the battery cell fixing device is not required to be switched, the operation is simple and convenient, and the battery cell transportation efficiency is high; and utilize hold-down mechanism to compress tightly fixedly the electric core in the spacing groove, prevent that the electric core from appearing the pole piece dislocation in transportation, fixing device is small, light in weight, convenient manual transport.

Preferably, the battery production line further comprises a first manipulator, wherein the first manipulator is used for grabbing the battery cells.

Preferably, the battery production line further comprises a second manipulator, wherein the second manipulator is used for applying pressure to the stress part to enable the stress part to move to one side close to the base.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

FIG. 1 is an exemplary block diagram of a cell fixing device according to an embodiment of the present utility model;

FIG. 2 is an exemplary block diagram of a plurality of limit slots formed in the same horizontal plane of a base according to an embodiment of the present utility model;

fig. 3 is another exemplary structure diagram of a plurality of limit grooves formed in the same horizontal plane of a base according to an embodiment of the present utility model.

In the above figures: 1, a base; 11 limit grooves; 12 avoiding gaps; 2, a compressing mechanism; 21 a pressing part; 22 connecting rods; 23 a support; 24 elastic members; 25 force receiving parts; 3 bottom support.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for convenience of description, only a portion related to the present utility model is shown in the drawings.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Throughout the specification and claims, the term "comprising" is to be interpreted as an open, inclusive meaning, i.e. "comprising, but not limited to, unless the context requires otherwise.

In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "particular examples," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.

As shown in fig. 1, an exemplary structural schematic diagram of a cell fixing device provided by an embodiment of the present utility model, where the cell fixing device provided by the embodiment of the present utility model includes: a base 1 and at least one hold-down mechanism 2; wherein,

a plurality of limit grooves 11 are formed in the base 1, and at least some limit grooves 11 in the limit grooves 11 are different in size; the limiting grooves 11 with different sizes are used for adapting to the battery cells with different sizes (namely, the battery cells with different types), and the limiting grooves 11 with each size are used for placing the battery cells with the same size;

the compressing mechanism 2 is arranged on the base 1, and the compressing mechanism 2 is used for compressing and fixing the battery cell in the limit groove 11.

Specifically, through offer a plurality of spacing grooves 11 on base 1, and the size of at least some spacing groove 11 in a plurality of spacing grooves 11 is different, and the different electric core of size can be adapted to spacing groove 11 to adopt hold-down mechanism 2 to compress tightly fixedly the electric core in the spacing groove 11, prevent that the electric core from appearing the pole piece dislocation in transportation.

The battery cell fixing device provided by the embodiment of the utility model adopts a mechanical structure, has a simple structure and high stability, can be provided with the limit groove 11 with the corresponding size according to the size of the actual battery cell, has strong compatibility to the battery cell, can adapt to a plurality of battery cells with different sizes (such as 2-3 sizes), firmly fixes the battery cells, and prevents the dislocation of pole pieces of the battery cells in the transferring process; when fixing the electric core of different sizes, need not to switch electric core fixing device, put into the spacing groove 11 of corresponding size with the electric core of corresponding size, can realize fixing the electric core of corresponding size, easy and simple to handle, and fixing device is small, light in weight, convenient manual transport.

In some embodiments, the groove top end surfaces of the plurality of limiting grooves 11 are located on the same horizontal plane only.

Specifically, when the groove top end surfaces of the plurality of limiting grooves 11 are located on the same horizontal plane of the base 1, that is, the groove top end surfaces of the base 1 are located on the same horizontal plane, a plurality of limiting grooves 11 with the same or/and different sizes can be formed, and at least part of the limiting grooves 11 in the plurality of limiting grooves 11 with the groove top end surfaces located on the same horizontal plane are different in size and are used for adapting to the battery cells with different sizes. As shown in fig. 2, the same horizontal plane of the base 1 is provided with three size limit grooves 11, and each size limit groove 11 is 1; as shown in fig. 3, three sizes of limiting grooves 11 are formed in the same horizontal plane of the base 1, and the number of limiting grooves 11 in each size is 2.

In some embodiments, at least some of the top end surfaces of the limiting grooves 11 are located at different levels, and the size of the limiting grooves 11 with the top end surfaces located at different levels is the same or/and different.

As shown in fig. 1, the top end surface of the slot of the base 1 is located in different horizontal planes (three horizontal planes) and is provided with three size limiting slots 11 respectively for adapting to three different sizes of battery cells.

In some embodiments, the dimensions of the limiting groove 11 with the groove top end surfaces at different levels gradually increase from one end near the bottom of the base 1 to one end far away from the bottom of the base 1.

Specifically, when the groove top end surfaces of at least part of the plurality of limiting grooves 11 are located on different horizontal planes of the base 1, the size of the limiting groove 11 on the side close to the bottom of the base 1 is smaller than that of the limiting groove 11 on the side far away from the bottom of the base 1. For example, as shown in fig. 1, the top end surface of the groove of the base 1 is provided with three size limiting grooves 11 at different horizontal planes, and the three size limiting grooves 11 integrally form a stepped structure.

In some embodiments, the number of the limit grooves 11 with groove top end faces on the same horizontal plane is 1.

Specifically, when the groove top end surfaces of at least part of the limiting grooves 11 in the plurality of limiting grooves 11 are located on different horizontal planes of the base 1, a limiting groove 11 with one size is correspondingly formed in each horizontal plane of the base 1. For example, as shown in fig. 1, the top end surface of the groove of the base 1 is provided with three sizes of limiting grooves 11 on different horizontal planes, each horizontal plane is provided with only one size of limiting groove 11, and the three sizes of limiting grooves 11 integrally form a stepped structure.

In some embodiments, at least one of the two sides of the limiting groove 11 adjacent to the pressing mechanism 2 is not provided with a groove wall.

Specifically, as shown in fig. 1, when the top end surfaces of the grooves of the plurality of limiting grooves 11 are located on different horizontal planes of the base 1, and each horizontal plane only contains one size of the limiting groove 11, when the whole limiting grooves 11 of different horizontal planes form a stepped structure, one or both sides of two adjacent sides (such as two sides in the y direction in fig. 1) of the limiting groove 11 and the pressing mechanism 2 may not be provided with groove walls, so that the manipulator can horizontally take out the battery cell from the side without the groove walls, and operation is convenient.

For another example, when the number of the limiting grooves 11 with the groove top end face located at the same horizontal plane is plural, among the plurality of limiting grooves 11 with the groove top end face located at the same horizontal plane, at least one limiting groove 11 close to two sides of the base 1 in the first direction is not provided with a groove wall, and the side limiting groove 11 is not provided with a groove wall on one side close to the side wall of the base 1 in the first direction. As shown in fig. 2, the first direction may be the y direction of the three-dimensional coordinate system in fig. 2, when the limiting grooves 11 with three dimensions sequentially arranged along the y direction are included in the limiting groove 11 with the top end surface of the groove located on the same horizontal plane, the limiting grooves are the first dimension limiting groove, the second dimension limiting groove and the third dimension limiting groove respectively, and at least one of the first dimension limiting groove and the third dimension limiting groove located on two sides of the base 1 is not provided with a groove wall, for example, the first dimension limiting groove is not provided with a groove wall on one side of the y direction, which is close to the side wall of the base 1, or/and the third dimension limiting groove is not provided with a groove wall on one side of the y direction, which is close to the side wall of the base 1, so that the battery core of the first dimension limiting groove or/and the third dimension limiting groove can be conveniently and horizontally taken out along the y direction in the three-dimensional coordinate system by the manipulator, and the middle second dimension limiting groove can be grasped by the manipulator to take the battery core along the z direction in the three-dimensional coordinate system.

In some embodiments, when the number of the limit grooves 11 with the groove top end faces at the same level is plural, the sizes of the plurality of limit grooves 11 with the groove top end faces at the same level are the same, or the sizes of at least some of the limit grooves 11 in the plurality of limit grooves 11 with the groove top end faces at the same level are different.

Specifically, when the top end surfaces of the plurality of limiting grooves 11 are located on different horizontal planes of the base 1, each horizontal plane may be provided with a plurality of limiting grooves 11 with the same size or/and different sizes, and at least some of the limiting grooves 11 are different in size and are used for adapting to the battery cells with different sizes.

In some embodiments, when the plurality of limiting grooves 11 with the groove top end surfaces at the same horizontal plane are divided into at least one group of limiting grooves 11, and each group of limiting grooves 11 includes a plurality of limiting grooves 11, the plurality of limiting grooves 11 of each group of limiting grooves 11 are arranged on the base 1 along the first direction.

Specifically, the plurality of limiting grooves 11 located on the same horizontal plane are divided into groups, and are divided into at least one group of limiting grooves 11, each group of limiting grooves 11 comprises a plurality of limiting grooves 11 with the same or/and different sizes, and the plurality of limiting grooves 11 included in each group of limiting grooves 11 are distributed on the base 1 along a first direction (equidistant or non-equidistant). For example, as shown in fig. 2, the first direction may be the y direction of the three-dimensional coordinate system in fig. 2, and a set of limiting grooves 11 are formed on the same horizontal plane of the base 1, where the set of limiting grooves 11 includes three sizes of limiting grooves 11 distributed at equal intervals along the first direction.

In some embodiments, when the plurality of limiting grooves 11 with the groove top end surface located on the same horizontal plane are divided into a plurality of groups of limiting grooves 11, the plurality of groups of limiting grooves 11 are arranged on the base 1 along a second direction, and the second direction is located on the same plane as the first direction and is not coincident with the first direction.

Specifically, when the plurality of limiting grooves 11 with the groove top end surfaces located on the same horizontal plane are divided into a plurality of groups of limiting grooves 11, the plurality of groups of limiting grooves 11 are arranged on the base 1 along the second direction (symmetrical or asymmetrical).

The first direction may be a y direction in the three-dimensional coordinate system, and the second direction may be an x direction in the three-dimensional coordinate system, so that the first direction and the second direction are located on the same horizontal plane and are vertically disposed. The first direction and the second direction may be located on the same horizontal plane and intersect at a certain angle, for example, the included angle between the first direction and the second direction is 30 °, 60 °.

For example, as shown in fig. 3, two sets of limiting grooves 11 are formed on the same horizontal plane of the base 1, each set of limiting grooves includes three sizes of limiting grooves 11, and the two sets of limiting grooves 11 are symmetrically distributed on the base 1 along a second direction (such as an x direction of a three-dimensional coordinate).

In some embodiments, the pressing mechanism 2 is provided with a plurality of pressing mechanisms, the plurality of pressing mechanisms 2 are respectively arranged at two ends of the base 1 along the second direction, the plurality of pressing mechanisms 2 are used for pressing and fixing two sides of the same electric core, or the plurality of pressing mechanisms 2 are respectively used for pressing and fixing one sides of different electric cores.

In the embodiment of the present utility model, as shown in fig. 1, two pressing mechanisms 2 are symmetrically disposed along the left-right horizontal direction at two ends of the base 1, and the left-right horizontal direction of the base 1 is defined as the second direction (e.g. the x direction of the three-dimensional coordinate system in fig. 1), and then the front-back horizontal direction of the base 1 is the first direction of the three-dimensional coordinate system (e.g. the y direction of the three-dimensional coordinate system in fig. 1). The two pressing mechanisms 2 on the base 1 can also be arranged at two ends of the base 1 in a staggered manner along the second direction.

The plurality of pressing mechanisms 2 are arranged in the second direction of the base 1, the plurality of pressing mechanisms 2 are used for pressing and fixing two sides of the same battery cell, and the battery cell is fixed more firmly; or a plurality of pressing mechanisms 2 respectively press and fix one sides of different battery cells. 1-2, two pressing mechanisms 2 symmetrically arranged on the base 1 are used for pressing and fixing two sides of the same battery cell, so that the battery cell with the same size is fixed more firmly; as shown in fig. 3, the pressing mechanism 2 on one side of the base 1 respectively presses and fixes one sides of different electric cores, so that the electric cores with different sizes can be pressed and fixed simultaneously, and the electric core transferring efficiency is improved.

The number of the pressing mechanisms 2 is not particularly limited in the embodiment of the present utility model, and those skilled in the art may set any number according to actual requirements, such as 3, 4, 5, etc.

In some embodiments, the hold-down mechanism 2 comprises: a pressing portion 21 and a driving portion provided on the base 1; the driving part is used for driving the pressing part 21 to move along one side close to or far from the limit groove 11.

Specifically, the connection manner of the driving portion and the pressing portion 21 may be: detachable connection, hinged connection or integrally formed connection. The driving part is used for driving the compressing part 21 to move along one side close to or far away from the limiting groove 11, and when the driving part drives the compressing part 21 to move along one side close to the limiting groove 11, the compressing part 21 can be pressed on the surface of the battery cell in the limiting groove 11, so that the battery cell is fixed; when the driving part drives the pressing part 21 to move along one side far away from the limiting groove 11, the fixation of the battery cell is released, so that the battery cell can be taken out conveniently.

In some embodiments, the driving part includes: a connecting rod 22 and a support 23; one end of the connecting rod 22 is connected with the compressing part 21, the connecting rod 22 is rotatably connected with the supporting piece 23, the supporting piece 23 is arranged on the base 1, and when the connecting rod 22 rotates around the supporting piece 23, the compressing part 21 is driven to move along one side close to or far away from the limiting groove 11.

Specifically, as shown in fig. 1, the driving part includes a connecting rod 22 and a supporting member 23, one end of the connecting rod 22 is connected with the compressing part 21 (detachable, hinged, integrally formed, etc. connection modes), and the middle part of the connecting rod 22 is rotationally connected with the supporting member 23, for example, the connecting rod 22 is connected with the supporting member 23 by adopting a rotating shaft; the support 23 may be a support frame. When the connecting rod 22 rotates around the supporting piece 23, the pressing part 21 is driven to move along one side close to or far from the limiting groove 11.

In some embodiments, the connecting rod 22 and the supporting member 23 form a lever structure, and the pressing portion 21 is driven to move along a side close to or far from the limit groove 11 by using the lever structure.

Specifically, the connecting rod 22 and the supporting member 23 form a lever structure, and a pressure is applied to one end of the connecting rod 22, which is far away from the compressing portion 21, by using the lever principle, so that when the connecting rod 22 rotates around the supporting member 23 and moves to a side close to the limiting groove 11, the compressing portion 21 moves to a side far away from the limiting groove 11, and the discharge core is convenient to take out. When the pressure is stopped to be applied to the connecting rod 22, the pressing part 21 moves towards one side close to the limiting groove 11 under the action of dead weight and is attached to the surface of the battery cell, so that the battery cell is pressed and fixed.

In some embodiments, a force receiving portion 25 is disposed at an end of the connecting rod 22 away from the pressing portion 21, and the force receiving portion 25 is a force receiving point of the lever structure.

Specifically, by applying pressure to the force receiving portion 25 of the connecting rod 22, the connecting rod 22 is moved toward the side close to the limit groove 11, and the pressing portion 21 is driven to move toward the side far from the limit groove 11.

In some embodiments, the force receiving portion 25 is a bearing or roller rotatably coupled to the connecting rod 22.

Specifically, the force receiving portion 25 is a bearing or a roller rotatably connected to the connecting rod 22, so that wear of the force receiving portion 25 can be reduced.

In some embodiments, the connecting rod 22 is a telescopic rod that is driven by a first linear drive device to move linearly along its own axis.

Specifically, the connecting rod 22 is a telescopic rod, and the first linear driving device may be an electric push rod, a pneumatic cylinder, a screw motor, or the like. As shown in fig. 1, the limiting grooves 11 of the base 1 in different horizontal planes integrally form a stepped structure, when the electric cores of different sizes are fastened and fixed by utilizing the lever principle, the compression positions of the compression parts 21 on the electric cores of different sizes are different because the lengths of the connecting rods 22 are fixed, and the larger the sizes of the electric cores are, the closer the compression positions of the compression parts 21 are to the middle part of the surface of the electric core; the smaller the size of the cell, the closer the pressing position of the pressing portion 21 is to the surface side of the cell, and the cell of the corresponding size may not be pressed. In this example, the connecting rod 22 is a telescopic rod, so that the position of the pressing part 21 pressed on the surface of the battery cell with the corresponding size can be adjusted according to actual requirements, and the battery cells with each size can be pressed and fixed.

In some embodiments, the driving part further includes an elastic member 24, one end of the elastic member 24 is connected to the connection rod 22, and the other end of the elastic member 24 is connected to the support member 23 or the base 1.

Specifically, the elastic member 24 may be a torsion spring, a tension spring, or the like. One end of the spring is connected to the inside of the connecting rod 22 and the other end is connected to the support 23 or the base 1. When the pressure is stopped to be applied to the connecting rod 22, the pressing part 21 moves towards one side close to the limiting groove 11 under the action of self gravity and the restoring force of the elastic piece 24 and is attached to the surface of the battery cell, so that the battery cell is pressed and fixed.

In some embodiments, the pressing part 21 has a pressing surface that is in contact with the surface of the battery cell when the pressing surface acts on the battery cell.

Specifically, in the embodiment of the present utility model, the structure of the pressing portion 21 and the connection manner of the pressing portion 21 and the connecting rod 22 are not particularly limited, so long as the pressing surface of the pressing portion 21 is guaranteed to be attached to the surface of the battery cell when the pressing portion 21 presses against the surface of the battery cell, so as to prevent the surface of the battery cell from being pressed. The pressing portion 21 is of a bump structure, the pressing portion 21 is connected with the connecting rod 22 in a hinged mode, the area of a pressing surface of the bump structure is large, the pressing surface can be perpendicularly pressed to the surface of the battery cell and is attached to the surface of the battery cell, and indentation on the surface of the battery cell is avoided.

In some embodiments, the driving part includes: a second linear driving device and a third linear driving device, where the second linear driving device is used to drive the compressing part 21 to linearly move along a second direction, and the third linear driving device is used to drive the second linear driving device to linearly move along a third direction, so as to drive the compressing part 21 to move along the third direction; the third direction is perpendicular to the second direction.

Specifically, the second linear driving device drives the compressing portion 21 to linearly move along the second direction (such as the x direction of the three-dimensional coordinate system in fig. 1), so as to facilitate the taking and placing of the battery cells, and meanwhile, the compressing positions of the battery cells with different sizes in the limiting groove 11 can be adjusted according to actual requirements, so that the compressing and fixing of the battery cells with different sizes can be applied. The third linear driving device drives the second linear driving device to linearly move along a third direction (such as the z direction of the three-dimensional coordinate system in fig. 1), so as to drive the compressing part 21 to move along the third direction, and the compressing and fixing of the battery core are facilitated.

It will be appreciated that the second and third linear drive devices may be electric push rods, pneumatic cylinders, lead screw motors, etc.

In some embodiments, the base 1 is provided with a avoidance space 12 on at least one side of each limit groove 11 along the first direction, and the avoidance space 12 extends at least to the area covered by the corresponding limit groove 11 along the first direction; the avoidance space 12 penetrates through the top and the bottom of the base 1 along a third direction; the first direction and the second direction are positioned on the same plane and are not coincident, and the third direction is perpendicular to the planes of the first direction and the second direction.

Specifically, the first direction may be a y direction in the three-dimensional coordinate system, the second direction may be an x direction in the three-dimensional coordinate system, and the third direction may be a z direction in the three-dimensional coordinate system. Thus, the third direction is perpendicular to the plane in which the first direction and the second direction intersect. The base 1 is located one side or both sides of each limiting groove 11 along the first direction and is provided with a clearance gap 12, and the arrangement of the clearance gap 12 facilitates the grabbing and putting down of the battery cell by a mechanical arm, and is easy to operate and implement. In the present embodiment, the number of the avoidance spaces 12 may be set according to actual requirements, such as 2, 4, 6, etc. As shown in fig. 1, three sets of avoidance holes 12 are symmetrically arranged on the base 1 along a first direction of a three-dimensional coordinate system (such as a y direction of the three-dimensional coordinate system in fig. 1), each avoidance hole 12 penetrates through the top and the bottom of the base 1 along a third direction (such as a z direction of the three-dimensional coordinate system in fig. 1), and each avoidance hole 12 extends at least to an area covered by a limit slot 11 with a minimum size along the first direction, so as to facilitate grabbing cells with corresponding sizes from two sides of the limit slot 11.

In some embodiments, the bottom of the base 1 is provided with a bottom bracket 3, and a cavity penetrating through two ends of the bottom bracket 3 along the first direction is arranged between the bottom bracket 1 and the base 1.

Specifically, the base 1 and the bottom support 3 can be fixedly connected or detachably connected, the bottom support 3 can be in a regular rectangular structure, and two ends of the base 1 and the bottom support 3 along a first direction (such as the y direction of a three-dimensional coordinate system in fig. 1) are utilized to penetrate through the cavity, so that a manipulator can conveniently grasp and put down the battery cell.

It should be noted that, the battery core fixing device provided by any embodiment of the present utility model is not only suitable for transferring bare battery cores, but also suitable for transferring finished battery cores; the method is applicable to both laminated battery cells and winding battery cells; the stacked type bare cell is particularly suitable for being used in carrying or logistics line tray operation, and dislocation between each layer of pole piece and the diaphragm can be prevented.

In a second aspect of the present utility model, a battery production line is provided, including the cell fixing device provided in any embodiment of the present utility model.

In the battery production line provided by the utility model, the battery cell fixing device provided by any embodiment of the utility model can be adapted to battery cells with different sizes, when the battery cells with different sizes are required to be transported and fixed, the battery cells with different sizes are fixed by using the limit grooves 11 with different sizes in the same battery cell fixing device, the battery cell fixing device is not required to be switched, the operation is simple and convenient, and the battery cell transportation efficiency is high; and utilize hold-down mechanism 2 to compress tightly fixedly the electric core in the spacing groove 11, prevent that the electric core from appearing the pole piece dislocation in transportation, fixing device is small, light in weight, convenient manual transport.

The battery production line provided by the embodiment of the utility model can be a full-automatic or semi-automatic battery production line, and when the battery cells are transported in the battery production line, the battery cell fixing device provided by any embodiment of the utility model can be utilized to realize the compaction and fixation of the battery cells with different sizes, prevent the dislocation of pole pieces of the battery cells in the transportation process, improve the battery cell transportation efficiency and improve the production efficiency and quality of the battery.

It will be appreciated that the battery of the battery production line is composed of a process of from a cell to a module and from a module to a battery pack, wherein the smallest unit is a cell, a group of cells can form a module, and several modules can form a battery pack. The specific type of the battery in the present utility model is not particularly limited, and the battery may be a lithium battery, for example.

In some embodiments, the battery production line further comprises a first robot for gripping the battery cells.

Specifically, the first manipulator is utilized to grasp the battery cell, intelligent operation of battery cell fixation is realized, and the fixation and transportation efficiency of the battery cell is improved.

In some embodiments, the battery production line further includes a second manipulator for applying pressure to the force receiving portion 25 to move the force receiving portion 25 to a side close to the base 1.

Specifically, the second manipulator is used for applying pressure to the stress part 25, so that the stress part 25 moves to the side close to the base 1, the pressing part 21 moves along the side far away from the limiting groove 11, the automatic control of the lever structure is realized through the second manipulator, and the fixing and transferring efficiency of the battery cell is improved.

The above description is only illustrative of the preferred embodiments of the present utility model and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in the present utility model is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present utility model (but not limited to) having similar functions are replaced with each other.

Claims (16)

1. A cell fixing device, comprising: a base (1) and at least one pressing mechanism (2); wherein,

a plurality of limit grooves (11) are formed in the base (1), and at least part of the limit grooves (11) in the limit grooves (11) are different in size; the limiting grooves (11) with different sizes are used for adapting to the battery cores with different sizes, and the inside of each limiting groove (11) with each size is used for placing the battery cores with the same size;

the compressing mechanism (2) is arranged on the base (1), and the compressing mechanism (2) is used for compressing and fixing the battery cell in the limit groove (11).

2. The cell fixing device according to claim 1, wherein the groove top end surfaces of the plurality of limit grooves (11) are located only on the same horizontal plane.

3. The cell fixing device according to claim 1, wherein, among the plurality of limit grooves (11), at least part of groove top end surfaces of the limit grooves (11) are located at different horizontal planes, and the size of the limit grooves (11) with the groove top end surfaces located at the different horizontal planes is the same or/and different.

4. A cell fixing device according to claim 3, characterized in that the dimensions of the limit grooves (11) with groove top faces at different levels increase gradually from the end close to the bottom of the base (1) to the end far from the bottom of the base (1).

5. The cell fixing device according to claim 3 or 4, wherein the number of limit grooves (11) on the same horizontal plane of the groove top end surface is 1.

6. The cell fixing device according to claim 5, characterized in that at least one of the two sides of the limiting groove (11) adjacent to the pressing mechanism (2) is not provided with a groove wall.

7. A cell fixing device according to claim 3, wherein when the number of the limit grooves (11) of which the groove top end faces are located at the same level is plural, the sizes of the plurality of the limit grooves (11) of which the groove top end faces are located at the same level are the same, or the sizes of at least part of the limit grooves (11) of the plurality of the limit grooves (11) of which the groove top end faces are located at the same level are different.

8. The cell fixing device according to claim 2 or 7, wherein when a plurality of the limit grooves (11) having groove top end surfaces at the same level are divided into at least one group of limit grooves, and each group of limit grooves includes a plurality of limit grooves (11), the plurality of limit grooves (11) of each group of limit grooves are arranged on the base (1) along a first direction.

9. The cell fixing device according to claim 8, wherein when the plurality of limit grooves (11) having the groove top end surfaces on the same horizontal plane are divided into a plurality of sets of limit grooves, the plurality of sets of limit grooves are arranged on the base (1) along a second direction, and the second direction is on the same plane as the first direction and is not coincident with the first direction.

10. The cell fixing device according to any one of claims 1 to 4, wherein a plurality of pressing mechanisms (2) are provided, the plurality of pressing mechanisms (2) are respectively arranged at two ends of the base (1) along the second direction, the plurality of pressing mechanisms (2) are used for pressing and fixing two sides of the same cell, or the plurality of pressing mechanisms (2) are respectively used for pressing and fixing one sides of different cells.

11. The cell fixation device according to claim 10, characterized in that the compression mechanism (2) comprises: a pressing part (21) and a driving part, wherein the driving part is arranged on the base (1); the driving part is used for driving the pressing part (21) to move along one side close to or far away from the limiting groove (11).

12. The cell fixture of claim 11, wherein the driving portion comprises: a connecting rod (22) and a support (23); one end of the connecting rod (22) is connected with the compressing part (21), the connecting rod (22) is rotationally connected with the supporting piece (23), the supporting piece (23) is arranged on the base (1), and when the connecting rod (22) rotates around the supporting piece (23), the compressing part (21) is driven to move along one side close to or far away from the limiting groove (11).

13. The cell fixture according to claim 12, wherein the connecting rod (22) is a telescopic rod which is driven by a first linear driving device to linearly move along its own axis.

14. The cell fixing device according to claim 10, wherein the base (1) is provided with a clearance space (12) on at least one side of each limit slot (11) along a first direction, and the clearance space (12) extends at least to an area covered by the corresponding limit slot (11) along the first direction; the avoidance space (12) penetrates through the top and the bottom of the base (1) along a third direction; the first direction and the second direction are positioned on the same plane and are not coincident, and the third direction is perpendicular to the planes of the first direction and the second direction.

15. The cell fixing device according to claim 14, wherein a bottom of the base (1) is provided with a bottom bracket (3), and a cavity penetrating through two ends of the first direction is arranged between the bottom bracket (3) and the base (1).

16. A battery production line comprising a cell fixture according to any one of claims 1-15.