CN219801190U - Battery cell - Google Patents

Abstract

The utility model relates to the field of energy storage devices and discloses a battery which comprises a battery core, a fixing plate and a pressing device; the fixing plate is provided with a positioning slot, and the pole of the battery core is inserted into the positioning slot; the pressing device is used for applying pressure to the battery cell so that the battery cell is clamped and fixed between the pressing device and the fixing plate. The battery in the utility model optimizes the structure and can make the disassembly and assembly of the battery core simpler.

Description

Battery cell

Technical Field

The utility model relates to the field of energy storage devices, in particular to a battery.

Background

The current battery comprises a bearing box body and a plurality of electric cores, wherein the bearing box body comprises a fixing plate for bearing the electric cores; the plurality of battery cells are arranged and installed on the fixed plate, and the bottoms of the battery cells are connected with the fixed plate in an adhesive mode.

In the battery in the prior art, a plurality of battery cells are fixed on a fixed plate in an adhesive manner, after glue is condensed, a single battery cell is difficult to detach from the fixed plate, the adhesive fixing effect of adjacent battery cells is easily influenced in the process of detaching the single battery cell, the fixed plate is easily damaged in the process of detaching the single battery cell, and the maintenance of the battery is adversely affected; in addition, when the battery cell is mounted on the fixing plate, the battery cell is often difficult to fix in a set position, which leads to easy deviation of the position of the adhesively fixed battery cell, and the battery cell needs to be dismounted again and adjusted in position, so that the battery cell is complicated to mount.

In view of this, it is desirable to design a battery that allows for easier disassembly and assembly of the battery cells.

Disclosure of Invention

The utility model aims to provide a battery, which enables the disassembly and assembly of a battery core to be simpler.

To achieve the purpose, the utility model adopts the following technical scheme:

a battery comprises a battery core, a fixing plate and a pressing device;

the fixing plate is provided with a positioning slot, and the pole of the battery core is inserted into the positioning slot;

the pressing device is used for applying pressure to the battery cell so that the battery cell is clamped and fixed between the pressing device and the fixing plate.

Optionally, the battery further comprises a supporting frame, the supporting frame is fixedly connected with the fixing plate, and the pressing device is installed on the supporting frame.

Optionally, a plurality of the battery cell arrays are arranged to form a battery cell module;

the pressing device comprises at least two first pressing strips;

the two first pressing strips are respectively pressed on two opposite side edges of the top surface of the cell module.

Optionally, the pressing device comprises at least one second pressing strip; the second pressing strip presses the top surface of the cell module, which is far away from the fixed plate.

Optionally, the first pressing strip and the second pressing strip are both detachably mounted on the support frame.

Optionally, the cross section of the first pressing strip perpendicular to the extending direction of the first pressing strip is in an L shape, and the first pressing strip comprises a first pressing part and a second pressing part perpendicular to the first pressing part;

the first pressing part is pressed on the top surface, and the second pressing part is attached to the side surface of the battery cell module.

Optionally, the second pressing strip is T-shaped in a section perpendicular to the extending direction of the second pressing strip;

the cell module comprises a plurality of sub-modules which are arranged at intervals, and the second pressing strip comprises a transverse pressing part and a vertical separating part;

the vertical separation part separates two adjacent groups of sub-modules, and the transverse pressing part presses the tops of the two adjacent groups of sub-modules.

Optionally, the support frame is provided with a support beam perpendicular to the second bead, and the support beam is provided with a positioning groove for positioning the vertical partition.

Optionally, the opposite both sides of positioning groove all are provided with the supporting portion that is used for the bearing horizontal clamping part, the supporting portion is provided with the fixed orifices, correspond on the horizontal clamping part the fixed orifices is provided with the through-hole.

Optionally, the parts of the first pressing strip and the second pressing strip, which are used for being in contact with the battery cell module, are both coated with insulating layers.

Optionally, the insulating layers are coated on two opposite sides of the vertical separation part;

the vertical separation part and the insulating layer coated on the vertical separation part form a separation strip-shaped part, the section of the separation strip-shaped part perpendicular to the extending direction of the second pressing strip is trapezoid or triangle, the width of the separation strip-shaped part is smaller when the separation strip-shaped part is far away from the transverse pressing part, and the insulating layer is an elastic insulating layer.

Optionally, the battery further comprises a busbar installed on the fixing plate in an insulating manner, the busbar is provided with a conducting part for conducting the pole, the conducting part is located in the positioning slot, and the busbar is fixedly connected with the fixing plate;

when the pole is inserted into the positioning slot, the conducting part conducts the pole.

Optionally, the positioning slot is a groove;

the plurality of battery cells are arranged along the extending direction of the groove, and the positions, corresponding to the battery cell polar columns, in the groove are arranged at intervals with the plurality of conducting parts.

Optionally, the fixing plate has a first strip-shaped protruding portion and a second strip-shaped protruding portion parallel to each other, and the first strip-shaped protruding portion and the second strip-shaped protruding portion form the groove;

the first strip-shaped protruding portion is internally provided with a first heat exchange flow channel, and the second strip-shaped protruding portion is internally provided with a second heat exchange flow channel.

Optionally, the first heat exchange flow channel and the second heat exchange flow channel are parallel to the groove.

Optionally, the fixing plate further includes a substrate portion, and the first strip-shaped protruding portion and the second strip-shaped protruding portion are both disposed on the substrate portion;

and a heat exchange through hole parallel to the first heat exchange flow channel is arranged in the base plate part, and the heat exchange through hole at least partially extends to the position below the bottom of the groove.

Optionally, the conducting part is in a U shape, and a U-shaped groove for being spliced with the pole is formed;

the groove walls on two opposite sides of the U-shaped groove are all raised in the middle to form a clamping protrusion for clamping the pole.

Optionally, the polar column is provided with a plurality of strip-shaped bulges in parallel;

the conducting part is correspondingly provided with a plugging groove which is in plug-in connection with the strip-shaped bulge.

Optionally, the positioning slot is a rectangular slot, a V-shaped slot, a spherical slot or a conical slot.

Optionally, the fixing plate is located at one side of the bottom of the battery cell, and the pressing device is located at one side of the top of the battery cell;

or, the fixing plate is positioned at one side of the top of the battery cell, and the pressing device is positioned at one side of the bottom of the battery cell.

Optionally, an insulating heat conducting layer is arranged on the fixing plate, and the electric core is pressed on the insulating heat conducting layer.

Compared with the prior art, the utility model has the following beneficial effects:

in this embodiment, be provided with the location slot on the fixed plate, the mounted position of electric core is located through the location slot, and makes electric core by clamping fixed between closing device and fixed plate through closing device to accomplish the fixed to electric core. In the technical scheme, the battery cell is not glued and fixed on the fixed plate, so that a single battery cell which needs to be maintained can be taken out by taking down the pressing device or the fixed plate; in addition, in the installation process of the battery, the positioning of the battery cell is more convenient and simpler.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are therefore not intended to limit the scope of the utility model, since any modification, variation in proportions, or adjustment of the size, which would otherwise be used by those skilled in the art, would not have the essential significance of the present disclosure, would still fall within the scope of the present disclosure without affecting the efficacy or achievement of the present disclosure.

Fig. 1 is a schematic view of an installation structure of a battery according to an embodiment of the present utility model;

fig. 2 is a schematic top view of a battery according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure A-A in FIG. 2;

FIG. 4 is a schematic partial cross-sectional view of FIG. 3;

FIG. 5 is an enlarged schematic view of the position A in FIG. 4;

FIG. 6 is a schematic view of an installation structure of a fixing plate, a supporting frame and a pressing device according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the B-B axis sectional structure of FIG. 6;

FIG. 8 is a schematic view of an installation structure of a pressing device and a supporting beam according to an embodiment of the present utility model;

FIG. 9 is a schematic view of another downward looking mounting structure of the hold down device and support beam provided by an embodiment of the present utility model;

FIG. 10 is an enlarged schematic view of the position B in FIG. 9;

FIG. 11 is a schematic cross-sectional view of a second molding according to an embodiment of the present utility model in a direction perpendicular to the extending direction of the second molding.

Illustration of: 1. a battery cell; 11. a bar-shaped protrusion; 2. a fixing plate; 201. a first bar-shaped protrusion; 202. a second bar-shaped protrusion; 203. a first heat exchange flow path; 204. a second heat exchange flow path; 205. a substrate portion; 206. a heat exchange through hole; 21. positioning the slot; 3. a compacting device; 31. a first batten; 311. a first pressing portion; 312. a second pressing part; 32. a second pressing bar; 321. a lateral pressing portion; 322. a vertical partition; 4. a support frame; 41. a support beam; 411. a positioning groove; 412. a support part; 5. a busbar; 51. a conduction part; 6. an insulating heat conducting layer.

Detailed Description

In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions in the embodiments of the present utility model are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

The embodiment of the utility model provides a battery, which can facilitate the disassembly and assembly of a battery core.

Referring to fig. 1 to 10, the battery includes a cell 1, a fixing plate 2, and a pressing device 3. Wherein, the fixed plate 2 is provided with a positioning slot 21, and the pole of the battery core 1 can be inserted into the positioning slot 21; the pressing device 3 is used for applying pressure to the battery cell 1 so that the battery cell 1 is clamped and fixed between the pressing device 3 and the fixing plate 2.

In this embodiment, when the battery cell 1 is installed, the pole of the battery cell 1 can be better positioned through the positioning slot 21, so that the battery cell 1 is easier to be positioned at a position required to be installed, which is beneficial to improving the installation speed of the battery cell 1; in addition, when a single cell 1 on the fixed plate 2 needs to be removed, the fixed plate 2 or the pressing device 3 can be removed, and then the cell which needs to be maintained or replaced is taken out independently, and other adjacent cells 1 are not influenced in the process of taking out the cell 1; in addition, the fixing plate 2 is not easy to deform in the process of removing the single battery cell 1, namely, the fixing plate 2 is not easy to damage.

Optionally, the battery further comprises a support frame 4, the support frame 4 is fixedly connected with the fixing plate 2, and the pressing device 3 is mounted on the support frame 4. The support frame 4 is used for supporting the fixed plate 2 and the pressing device 3, and when the pressing device 3 presses, the battery cell is pressed between the fixed plate 2 and the pressing device 3.

It should be noted that the compressing device 3 may be a telescopic device mounted on the supporting frame 4, and a compression plate is disposed on a telescopic shaft of the telescopic device, and the telescopic device drives the compression plate to be close to or far away from the electric core 1, so as to clamp and fix the electric core 1 or loosen the clamping of the electric core 1. It should be added that the specific structure of the pressing device 3 is not limited in this solution, as long as the pressing device 3 can clamp and fix the battery cell between the pressing device 3 and the fixing plate 2.

In a specific implementation, a plurality of cells 1 are arranged in an array to form a cell module. The cell module may comprise a plurality of columns of cells formed by a number of cells 1 or a column of cells formed by a number of cells 1. When the cell module consists of a row of cells, the pressing device 3 comprises at least two first pressing strips 31 for realizing the fixation of the cell module; the two first pressing strips 31 are respectively pressed on two opposite side edges of the top surface of the battery cell module, and the first pressing strips 31 are parallel to the arrangement direction of the battery cells 1. At this time, the opposite side edges of the cell module are compressed, so that the cell module is compressed and fixed between the two first pressing strips 31 and the fixing plate 2. It should be further added that a first pressing strip 31 pressed at the middle position of the top of the battery cell module may be disposed between two first pressing strips 31, so as to improve the effect of pressing and fixing the battery cell module, i.e. the number of the first pressing strips 31 may be three, four or more.

Optionally, as shown in fig. 1 to 4, when the cell module is composed of a plurality of rows of cells, the pressing device 3 further includes at least one second pressing bar 32; the second bead 32 presses against the top surface of the cell module remote from the fixed plate 2. The shape of the first pressing bar 31 may be the same as or different from the shape of the second pressing bar 32 due to different positions of the pressing and fixing. In the present embodiment, the shape of the second bead 32 is different from the shape of the first bead 31.

Alternatively, the first bead 31 and the second bead 32 are both detachably mounted on the support frame 4. When the first pressing strip 31 and the second pressing strip 32 are fixed on the supporting frame 4, the first pressing strip 31 and the second pressing strip 32 both press the battery cell 1, so that the battery cell 1 is clamped and fixed between the pressing device 3 and the fixing plate 2. When the first pressing strip 31 and the second pressing strip 32 are detached, the battery cell 1 to be maintained can be easily taken out, and the fixing plate 2 plays a role in supporting the battery cell 1.

Alternatively, as shown in fig. 8, the first molding 31 has an L-shaped cross section perpendicular to the extending direction of the first molding 31, and includes a first pressing portion 311 and a second pressing portion 312 perpendicular to the first pressing portion 311; the first pressing portion 311 presses on the top surface, and the second pressing portion 312 is attached to the side surface of the battery cell module. It should be noted that, the first pressing portion 311 applies pressure from the top surface, so that the cell module is clamped and fixed between the pressing device 3 and the fixing plate 2, and the second pressing portion 312 is attached to the side surface of the cell module, so that the arrangement direction of the plurality of cells is standardized, and therefore, the deflection of the positions of the cells in the cell module can be effectively avoided, and the plurality of cells 1 are arranged in a more regular manner. The number of the technical proposal is more than two.

Alternatively, as shown in fig. 7 and 8, the second bead 32 has a T-shape in cross section perpendicular to the extending direction of the second bead 32; the cell module comprises a plurality of sub-modules arranged at intervals, and the second pressing strip 32 comprises a transverse pressing part 321 and a vertical separating part 322. It should be noted that, a plurality of cells 1 arranged in a linear direction form a sub-module. The vertical separation portion 322 separates two adjacent component modules, and two ends of the lateral pressing portion 321 are pressed on top of the two adjacent component modules. The opposite side edges of the plurality of battery cells 1 in each column are pressed, so that each battery cell 1 can obtain a good fixing effect. Preferably, the sides of the cells in the module block abut the sides of the vertical partitions 322.

In another specific implementation, the support frame 4 is provided with a support beam 41 perpendicular to the second bead 32, the support beam 41 being provided with a positioning groove 411 for positioning the vertical partition 322. The supporting beam 41 can effectively support the second pressing bar 32, the second pressing bar 32 is prevented from being bent due to the overlong length, and the positioning groove 411 enables the vertical separation portion 322 to be accurately installed at a set position, so that the installation of the second pressing bar 32 is further simplified. Wherein the support beams 41 may be provided with two, three or even more at intervals.

Alternatively, the opposite sides of the positioning groove 411 are provided with a supporting portion 412 for supporting the transverse pressing portion 321, the supporting portion 412 is provided with a fixing hole, and the transverse pressing portion 321 is provided with a through hole corresponding to the fixing hole.

Specifically, when the vertical partition 322 is fitted into the positioning groove 411, the screw fastener sequentially passes through the through hole and the fixing hole, thereby fixing the lateral pressing portion 321 to the bearing portion 412. When the lateral pressing portion 321 is fixed to the supporting portion 412, the lateral pressing portion 321 presses the battery cell 1 at this time, so that the battery cell 1 is fixed between the lateral pressing portion 321 and the fixing plate 2.

Optionally, in order to avoid the occurrence of the leakage short circuit phenomenon, the parts of the first pressing strip 31 and the second pressing strip 32, which are used for being in contact with the battery cell module, are both coated with the insulating layer 323, so that the safety performance of the battery is effectively improved. Preferably, the insulating layer 323 entirely covers the first molding 31, and the insulating layer 323 entirely covers the second molding 32.

Alternatively, as shown in fig. 11, two opposite sides of the vertical separation portion 322 are covered with an insulating layer 323 to separate two adjacent columns of cells in an insulating manner. The vertical separation portion 322 and the insulating layer 323 coated on the vertical separation portion 322 form a separation strip portion, the section of the separation strip portion perpendicular to the extending direction of the second pressing strip 32 is trapezoid or triangle, and the width of the separation strip portion is smaller as the separation strip portion is far away from the transverse pressing portion 321, namely, the end portion of the separation strip portion far away from the transverse pressing portion 321 is a trapezoid top or triangle top. The width here refers to a dimension parallel to the lateral pressing portion 321. Specifically, the cross section of the separation strip portion perpendicular to the extending direction of the second pressing strip 32 is trapezoidal or triangular, so that the separation strip portion can be more easily inserted into the gap between two adjacent rows of electric cells, and the insulating layers 323 on two opposite sides of the vertical separation portion 322 respectively abut against the side surfaces of one row of electric cells, so as to better fix the electric cells 1. The insulating layer 323 is made of elastic material, and the insulating layer 323 is coated on two opposite sides of the vertical separation portion 322 to separate two adjacent rows of cells in an insulating manner. The elastic insulating layer 323 on the vertical separation part 322 can abut against the side surface of each cell 1 so as to achieve good fixing effect on all the cells 1. Preferably, the cross section of the separation strip portion perpendicular to the extending direction of the second pressing strip 32 is isosceles trapezoid or isosceles triangle, that is, the separation strip portion is inserted between the two rows of electric cores, so that the separation strip portion can well abut against the side surfaces of the two rows of electric cores, and a better effect of fixing the electric cores 1 is achieved.

Optionally, the battery further includes a busbar 5 mounted on the fixing plate 2 in an insulating manner, the busbar 5 has a conducting portion 51 for conducting the pole, the conducting portion 51 is located in the positioning slot 21, and the busbar 5 is fixedly connected with the fixing plate 2; when the pole is inserted into the positioning slot 21, the conducting part 51 conducts the pole.

Note that, the conductive portion 51 is located in the positioning slot 21, but other portions of the bus bar 5 may not be located in the positioning slot 21. The conducting part 51 only needs to achieve the conducting effect with the pole, and the conducting part 51 can be arranged in various shapes, such as a column shape, a strip shape, a block shape, a cone shape and the like. Preferably, the conducting part 51 is provided with a plugging slot, and when the pole of the battery core 1 is plugged into the positioning slot 21, the conducting part 51 is connected with the pole in a plugging manner through the plugging slot, and the conducting part 51 also has the function of positioning the pole.

Optionally, the positioning slot 21 is a groove; the plurality of battery cells 1 are arranged along the extending direction of the groove, and a plurality of conducting parts 51 are arranged at intervals in the groove corresponding to the positions of the battery cell 1 poles. When a plurality of electric cores 1 are installed on the fixed plate 2, one pole of each electric core 1 is at least conducted with one conducting part 51.

Alternatively, the fixing plate 2 has a first strip-shaped protrusion 201 and a second strip-shaped protrusion 202 parallel to each other, the first strip-shaped protrusion 201 and the second strip-shaped protrusion 202 forming a groove; the first heat exchange flow channel 203 is arranged inside the first strip-shaped protruding portion 201, and the second heat exchange flow channel 204 is arranged inside the second strip-shaped protruding portion 202.

Here, the shapes of the first and second bar-shaped protrusions 201 and 202 may be specifically set according to the shape of the bus bar 5 so that the bus bar 5 can be more conveniently mounted on the fixing plate 2. Further, the shape of the first strip-shaped protrusion 201 may be the same as the shape of the second strip-shaped protrusion 202, and the shape of the first strip-shaped protrusion 201 may be different from the shape of the second strip-shaped protrusion 202. Preferably, the first and second strip-shaped protrusions 201 and 202 are rectangular in cross section perpendicular to the extending direction of the groove.

In addition, the first heat exchange flow channel 203 is provided, so that the heat exchange effect of the first strip-shaped protruding portion 201 can be effectively improved; the second heat exchange flow channel 204 is arranged, so that the heat exchange effect of the second strip-shaped protruding portion 202 can be effectively improved. It should be further noted that, the first heat exchange flow channel 203 and the second heat exchange flow channel 204 are both used for circulating a heat exchange medium, and the heat exchange medium may be a liquid medium or a gaseous medium. For example, when the battery core 1 needs to be cooled, a liquid medium with a lower temperature, such as water, can be circulated in the first heat exchange flow channel 203 and the second heat exchange flow channel 204; when the heating core 1 is needed, a liquid medium with higher temperature, such as hot water, flows through the first heat exchange flow channel 203 and the second heat exchange flow channel 204.

Optionally, the first heat exchange flow channel 203 and the second heat exchange flow channel 204 are parallel to the grooves, so that the cooling effect of the plurality of electric cells 1 arranged along the grooves is more uniform.

Optionally, the fixing plate 2 further includes a base plate portion 205, where the first strip-shaped protruding portion 201 and the second strip-shaped protruding portion 202 are disposed on the base plate portion 205, and a portion of a side plate surface of the base plate portion 205 forms a groove bottom of the groove.

In order to further increase the cooling effect of the fixing plate 2 on the battery cells, heat exchange through holes 206 parallel to the first heat exchange flow channels 203 are arranged in the base plate part 205, and the heat exchange through holes 206 extend at least partially below the bottoms of the grooves. The heat exchange through holes 206 may be circulated with a liquid heat exchange medium or a gaseous heat exchange medium.

Optionally, the conducting part 51 is in a U shape, and forms a U-shaped groove for plugging with the pole; the groove walls on two opposite sides of the U-shaped groove are all convex in the middle to form clamping protrusions for clamping the pole, so that the conducting connection effect of the pole and the conducting part 51 is more stable.

Optionally, in order to further improve the connection effect of the pole and the conducting part 51, a plurality of strip-shaped protrusions 11 are arranged on the pole in parallel, the conducting part 51 is correspondingly provided with a plugging slot in plug connection with the strip-shaped protrusions 11, and the strip-shaped protrusions 11 are inserted into the plugging slots, so that the conducting connection of the pole and the conducting part 51 is realized. In addition, the larger the number of the strip-shaped protrusions 11 is, the more the area of the conductive connection is facilitated to be increased, the better the conductive effect between the pole and the conductive portion 51 is, and the heat productivity of the battery is facilitated to be reduced.

Alternatively, the positioning slot 21 is used for positioning the electrical core, and the shape of the positioning slot 21 can be specifically set according to the shape of the pole of the electrical core. For example, the positioning slot 21 may be provided as a rectangular groove, a V-groove, a spherical groove, or a conical groove.

Optionally, the fixing plate 2 is positioned at one side of the bottom of the battery cell 1, and the pressing device 3 is positioned at one side of the top of the battery cell 1; when the fixing plate 2 is positioned at the bottom side of the battery cell 1, the battery cell is kept in a state of being inserted into the positioning slot 21 due to the self gravity, and the pressing device 3 presses the battery cell from the top.

The fixed plate 2 is located at one side of the top of the battery cell 1, and the pressing device 3 is located at one side of the bottom of the battery cell 1. When the fixing plate 2 is positioned on the top side of the battery cell 1, the pressing device 3 presses the battery cell from the bottom of the battery cell, so that the pole is kept in a state of being inserted into the positioning slot 21, and the battery cell is clamped and fixed between the pressing device 3 and the fixing plate 2.

Optionally, an insulating and heat conducting layer 6 is arranged on the fixing plate 2, and the battery cell 1 is pressed on the insulating and heat conducting layer 6. The insulating heat conducting layer 6 insulates and separates the battery cell 1 and the fixed plate 2. The fixing plate 2 can be a metal plate or a non-metal plate, and preferably an aluminum plate or a copper plate with better heat conduction effect is adopted.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (21)

1. A battery is characterized by comprising an electric core (1), a fixing plate (2) and a pressing device (3);

the fixing plate (2) is provided with a positioning slot (21), and the pole of the battery cell (1) is inserted into the positioning slot (21);

the pressing device (3) is used for applying pressure to the battery cell (1) so that the battery cell (1) is clamped and fastened between the pressing device (3) and the fixing plate (2).

2. The battery according to claim 1, further comprising a support frame (4), wherein the support frame (4) is fixedly connected to the fixing plate (2), and wherein the pressing device (3) is mounted on the support frame (4).

3. The battery according to claim 2, wherein a plurality of the cells (1) are arranged in an array to form a cell module;

the pressing device (3) comprises at least two first pressing strips (31);

the two first pressing strips (31) are respectively pressed on two opposite side edges of the top surface of the cell module.

4. A battery according to claim 3, characterized in that the compression means (3) comprise at least one second bead (32); the second pressing strip (32) presses on the top surface of the cell module, which is far away from the fixed plate (2).

5. The battery according to claim 4, characterized in that the first bead (31) and the second bead (32) are both detachably mounted on the support frame (4).

6. A battery according to claim 3, wherein the first bead (31) has an L-shaped cross section perpendicular to the extending direction of the first bead (31), and comprises a first pressing portion (311) and a second pressing portion (312) perpendicular to the first pressing portion (311);

the first pressing part (311) is pressed on the top surface, and the second pressing part (312) is attached to the side surface of the battery cell module.

7. The battery according to claim 4, wherein the second bead (32) has a T-shape in a cross section perpendicular to the extending direction of the second bead (32);

the cell module comprises a plurality of sub-modules which are arranged at intervals, and the second pressing strip (32) comprises a transverse pressing part (321) and a vertical separation part (322);

the vertical separation part (322) separates two adjacent groups of sub-modules, and the transverse pressing part (321) presses the tops of the two adjacent groups of sub-modules.

8. The battery according to claim 7, characterized in that the support frame (4) is provided with a support beam (41) perpendicular to the second bead (32), the support beam (41) being provided with a positioning groove (411) for positioning the vertical partition (322).

9. The battery according to claim 8, wherein the two opposite sides of the positioning groove (411) are respectively provided with a supporting portion (412) for supporting the transverse pressing portion (321), the supporting portion (412) is provided with a fixing hole, and the transverse pressing portion (321) is provided with a through hole corresponding to the fixing hole.

10. The battery according to claim 7, wherein the first bead (31) and the second bead (32) are both coated with an insulating layer at a portion for contact with the cell module.

11. The battery according to claim 10, wherein the insulating layer (323) is coated on opposite sides of the vertical partition (322);

the vertical separation part (322) and the insulating layer (323) coated on the vertical separation part (322) form a separation strip-shaped part, the section of the separation strip-shaped part perpendicular to the extending direction of the second pressing strip (32) is trapezoid or triangle, the width of the separation strip-shaped part which is far away from the transverse pressing part (321) is smaller, and the insulating layer is an elastic insulating layer.

12. The battery according to claim 1, further comprising a busbar (5) mounted on the fixing plate (2) in an insulating manner, the busbar (5) having a conducting portion (51) for conducting the pole, the conducting portion (51) being located in the positioning slot (21), and the busbar (5) being fixedly connected to the fixing plate (2);

when the pole is inserted into the positioning slot (21), the conducting part (51) conducts the pole.

13. The battery according to claim 12, characterized in that the positioning slot (21) is a groove;

the electric cores (1) are arranged along the extending direction of the groove, and the positions, corresponding to the poles of the electric cores (1), in the groove are arranged at intervals with the conducting parts (51).

14. The battery according to claim 13, characterized in that the fixing plate (2) has a first strip-shaped protrusion (201) and a second strip-shaped protrusion (202) parallel to each other, the first strip-shaped protrusion (201) and the second strip-shaped protrusion (202) forming the groove;

the first strip-shaped protruding portion (201) is internally provided with a first heat exchange flow channel (203), and the second strip-shaped protruding portion (202) is internally provided with a second heat exchange flow channel (204).

15. The battery according to claim 14, wherein the first heat exchange flow channel (203) and the second heat exchange flow channel (204) are parallel to the grooves.

16. The battery according to claim 14, wherein the fixing plate (2) further includes a base plate portion (205), the first and second strip-shaped protruding portions (201, 202) being each provided on the base plate portion (205);

a heat exchange through hole (206) parallel to the first heat exchange flow channel (203) is arranged in the base plate part (205), and the heat exchange through hole (206) at least partially extends below the bottom of the groove.

17. The battery according to claim 12, characterized in that the conducting portion (51) is U-shaped, forming a U-shaped groove for plugging with the terminal;

the groove walls on two opposite sides of the U-shaped groove are all raised in the middle to form a clamping protrusion for clamping the pole.

18. The battery according to claim 12, characterized in that the polar columns are provided in parallel with several strip-shaped projections (11);

the conducting part (51) is correspondingly provided with a plugging groove which is in plugging connection with the strip-shaped bulge (11).

19. The battery according to claim 1, wherein the positioning slot (21) is a rectangular slot, a V-shaped slot, a spherical slot or a conical slot.

20. The battery according to claim 1, characterized in that the fixing plate (2) is located at the bottom side of the cell (1), and the pressing device (3) is located at the top side of the cell (1);

or, the fixing plate (2) is positioned at one side of the top of the battery cell (1), and the pressing device (3) is positioned at one side of the bottom of the battery cell (1).

21. The battery according to claim 1, characterized in that an insulating and heat conducting layer (6) is provided on the fixing plate (2), and the electric core (1) is pressed on the insulating and heat conducting layer (6).