CN215527824U

CN215527824U - Energy storage module and battery

Info

Publication number: CN215527824U
Application number: CN202121045907.1U
Authority: CN
Inventors: 郭燕春; 韦银涛
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-01-14
Anticipated expiration: 2031-05-17

Abstract

The utility model relates to the technical field of batteries, and particularly discloses an energy storage module and a battery. The energy storage module comprises a tray, a plurality of electric cores, a bus bar and an end plate. The tray has a receiving cavity. The plurality of battery cells are arranged side by side along a first direction to form a battery cell unit. And the positive pole columns and the negative pole columns of the two adjacent battery cores are electrically connected through a busbar. The both ends of electric core unit edge first direction all are provided with the end plate to form and hold the electric core group of chamber looks adaptation, the lower extreme of electric core group inlays in holding the intracavity. A plurality of electric cores set to electric core unit side by side, and electric core group is constituteed to electric core unit, end plate and busbar, and electric core group inlays and arranges the intracavity that holds of tray in. Carry on spacingly to electric core group through the tray for need not to beat between the electric core and between electric core and the end plate and glue the processing, and saved the silica gel pad between the electric core, simplified energy storage module's assembly procedure and assembly structure, reduced manufacturing cost. The energy storage modules are assembled to form the battery cell, so that the battery cell is convenient to disassemble and assemble, and the damage to the battery cell is reduced.

Description

Energy storage module and battery

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to an energy storage module and a battery.

Background

The energy storage module, which is a core component constituting the battery, occupies a major part of the assembly cost and the production man-hour of the battery.

In the process of assembling the energy storage module, a plurality of battery cell monomers and the silica gel pad are required to form a battery cell group. Wherein need install the silica gel pad additional between the electric core monomer to at the free side coating structure of electric core and glue, so that a plurality of electric cores are installed together firmly. Moreover, structural glue is also required to be coated between the end plate and the cell monomer, so that the connection strength between the end plate and the cell is increased.

At present, the energy storage module is complex to install, consumes long time and is not beneficial to reducing the production cost. In addition, the structural adhesive inside the energy storage module causes inconvenient disassembly and assembly, and easily causes damage to the cell monomer.

SUMMERY OF THE UTILITY MODEL

One object of the present invention is to provide an energy storage module to simplify the assembly process and the assembly structure and reduce the production cost.

Another object of the present invention is to provide a battery to simplify an assembly process and an assembly structure and reduce a production cost.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

an energy storage module comprising:

a tray having a receiving cavity;

the battery cell unit comprises a plurality of battery cells, a plurality of battery cells and a plurality of battery cells, wherein the battery cells are arranged side by side along a first direction to form a battery cell unit;

the positive pole columns and the negative pole columns of two adjacent battery cells are electrically connected through the bus bar;

the end plate, electric core unit follows the both ends of first direction all are provided with the end plate to form with hold the electric core group of chamber looks adaptation, the lower extreme of electric core group is embedded in hold the intracavity.

Furthermore, the energy storage module also comprises a binding belt, and the binding belt is sleeved at the upper end of the electric core group.

Furthermore, the tray comprises a bottom plate and side plates, and the side plates are arranged at the edge of the bottom plate in a surrounding mode and form the accommodating cavity in a surrounding mode.

Furthermore, the bottom plate is provided with heat dissipation holes, and the heat dissipation holes fall into the lower end face of the electric core group towards the projection area of the electric core group.

Further, the upper parts of the two side plates oppositely arranged on the tray along a second direction extend towards the inner part of the accommodating cavity to form thickened parts, and the first direction is perpendicular to the second direction.

Further, the energy storage module further comprises a first insulating plate, and the first insulating plate is arranged between the lower end face of the electric core group and the bottom plate.

Furthermore, the energy storage module further comprises a second insulating plate located above the bus bar, and two ends of the second insulating plate are fixedly installed on the corresponding end plates respectively.

Furthermore, the end plate is a metal plate, the energy storage module further comprises a third insulating plate, and the third insulating plate is arranged between the end plate and the battery cell unit corresponding to the outer side of the battery cell unit.

Further, the energy storage module further comprises a fixing block configured to fix and support the positive output bar or the negative output bar of the battery cell unit; the top of end plate has seted up the spacing groove, the fixed block with the spacing groove joint cooperation.

A battery comprises the energy storage module

The utility model has the beneficial effects that: a plurality of electric cores set to electric core unit side by side, and electric core group is constituteed to electric core unit, end plate and busbar, and electric core group inlays and arranges the intracavity that holds of tray in. Carry on spacingly to electric core group through the tray for need not to beat between the electric core and between electric core and the end plate and glue the processing, and saved the silica gel pad between the electric core, simplified energy storage module's assembly procedure and assembly structure, reduced manufacturing cost.

In addition, the energy storage modules are assembled and formed without structural adhesive connection, so that the battery cell is convenient to disassemble and assemble, and the damage to the battery cell is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an energy storage module according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of an energy storage module according to an embodiment of the utility model;

fig. 3 is a schematic structural diagram of an end plate according to an embodiment of the present invention.

The component names and designations in the drawings are as follows:

1. a tray; 11. a base plate; 111. heat dissipation holes; 12. a side plate; 121. thickening the portion; 2. an electric core; 21. a positive post; 22. a negative pole post; 3. a bus bar; 4. an end plate; 41. a limiting groove; 42. mounting holes; 5. binding a belt; 6. a fixed block; 7. a first insulating plate; 8. a second insulating plate; 81. positioning holes; 9. and a third insulating plate.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. 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 the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment discloses a battery, and this battery includes box and energy storage module, and a plurality of energy storage module series-parallel connect to install in the box.

As shown in fig. 1 and 2, the energy storage module includes a tray 1, a plurality of battery cells 2, a bus bar 3, and an end plate 4. The tray 1 has a receiving cavity. A plurality of battery cells 2 are arranged side by side in a first direction as a cell unit. The positive electrode posts 21 and the negative electrode posts 22 of two adjacent battery cells 2 are electrically connected through the bus bar 3. Both ends along first direction of electric core unit all are provided with end plate 4 to form and hold the electric core group of chamber looks adaptation, the lower extreme of electric core group inlays in holding the intracavity. A plurality of electric cores 2 set up to electric core unit side by side, and electric core group is constituteed to electric core unit, end plate 4 and busbar 3, and electric core group inlays and arranges the intracavity that holds in tray 1.

The energy storage module of this embodiment carries on spacingly through tray 1 to electric core group for need not to beat between electric core 2 and the end plate 4 and glue the processing, and saved the silica gel pad between electric core 2, simplified energy storage module's assembly flow and assembly structure, reduced manufacturing cost.

Because energy storage module assembles the constitution, does not have the structure and glues the connection, the dismouting of being convenient for is favorable to reducing the damage to electric core 2.

As shown in fig. 2, the tray 1 includes a bottom plate 11 and side plates 12, and the side plates 12 are arranged around the bottom plate 11 and enclose an accommodating cavity.

The tray 1 of this embodiment is a rectangular tray, and the bottom plate 11 is a rectangular plate. The number of the side plates 12 is four, and the four side plates 12 are arranged in pairs. In particular, the bottom plate 11 is integrally formed with the side plates 12, which is advantageous for improving the structural strength of the tray 1.

The longitudinal direction of the tray 1 is the first direction, i.e., the arrangement direction of the cells 2. The width direction of the tray 1 is a second direction, and the first direction is perpendicular to the second direction. The width of tray 1 and the width looks adaptation of electric core 2 to avoid electric core 2 to take place to rock or offset in tray 1, be favorable to improving energy storage module's structural stability.

Preferably, upper portions of the two side plates 12 disposed oppositely in the second direction on the tray 1 extend toward the inside of the accommodation chamber with a thickened portion 121. When the cell group is embedded in the chamber that holds of tray 1, thickening portion 121 on two curb plates 12 is in the common centre gripping cell group of second direction, avoids taking place the position between electric core 2 and removes, is favorable to improving the structural strength of curb plate 12 simultaneously.

The thickened part 121 extends towards the inner side and the outer side of the accommodating cavity at the same time at the upper part of the side plate 12 of the embodiment, so that the limiting strength of the side plate 12 to the electric core group and the structural strength of the tray 1 are further improved.

As shown in fig. 2, the heat dissipation holes 111 are formed in the bottom plate 11, so that the heat dissipation efficiency of the energy storage module is improved, and the weight of the tray 1 is reduced. The area of projection of louvre 111 orientation electric core group falls into the lower terminal surface of electric core group, and the open pore area of louvre 111 is less than the area of the lower terminal surface of electric core group promptly for bottom plate 11 plays spacing and supported effect to electric core group.

Specifically, the heat dissipation holes 111 are rectangular holes having the same shape as the bottom plate 11, so that the bottom wall of the tray 1 is a skirt distributed around the circumference of the heat dissipation holes 111. Of course, the heat dissipation holes 111 may also be circular holes or other polygonal holes, and the number may be one or more.

The energy storage module of this embodiment further includes first insulating plate 7, and first insulating plate 7 sets up between the lower terminal surface of electric core group and bottom plate 11. The lower end of the electric core group is kept in good insulation effect by the first insulation plate 7. In addition, the first insulating plate 7 can also function as a support for the electric core pack.

Continuing to fig. 2, the energy storage module further comprises a binding belt 5, and the binding belt 5 is sleeved on the upper end of the electric core group. The band 5 is a metal band and has a high binding force. The band 5 may be a steel band, for example. Relative setting about tray 1 and ribbon 5, tray 1 carries out spacing fixed to the lower extreme of electric core group, and ribbon 5 carries out spacing fixed to the upper end of electric core group, has strengthened energy storage module's stability and joint strength.

The number of bands 5 in this embodiment is one. Of course, it is also possible to increase the number of bands 5 adaptively according to the specific height of the electric core group. For example, the number of the bands 5 is two, one band 5 is sleeved on the upper end of the electric core group, and the other band 5 is sleeved on the middle position of the electric core group.

The end plates 4 of the energy storage module may be plastic plates or also metal plates. The end plate 4 of this embodiment is a metal plate to guarantee the structural strength of the end plate 4, and realize the stable assembly of the energy storage module.

In order to meet the insulation requirement between the battery cell 2 and the end plate 4, the energy storage module further comprises a third insulating plate 9, and the third insulating plate 9 is arranged between the end plate 4 and the battery cell 2 on the corresponding outer side of the battery cell unit.

As shown in fig. 2, a plurality of battery cells 2 are arranged side by side, and the positive electrode column 21 and the negative electrode column 22 of each battery cell 2 are located at the top end of the battery cell unit. The electric cores 2 are connected in series by a plurality of busbars 3, wherein two busbars 3 are respectively a positive output bar and a negative output bar of the electric core unit. The bus bar 3 may be an aluminum bar or a copper bar or other conductive sheet.

The energy storage module of this embodiment further includes a fixing block 6, and this fixing block 6 is used for fixing and supporting the positive output row or the negative output row of the electric core unit. Specifically, a fastening nut is embedded in the fixing block 6. When the single energy storage module is connected with an external circuit, the positive output bar or the negative output bar is electrically connected with an external wiring through a fastening nut. Or when the plurality of energy storage modules are connected in series and in parallel, the positive electrode output row and the negative electrode output row of the two energy storage modules are lapped on the fixed block 6 and are electrically connected through the fastening nuts.

The fixing block 6 of the present embodiment is mounted on the upper end of the end plate 4. As shown in fig. 2 and 3, the end plate 4 is a rectangular plate, and the top end of the end plate 4 is provided with a stopper groove 41. The number of the limiting grooves 41 is two, the two limiting grooves 41 are arranged at intervals and are respectively opposite to the positive pole 21 and the negative pole 22 of the battery cell 2, and the fixing block 6 is in clamping fit with one of the limiting grooves 41.

It should be noted that, when the positive output row and the negative output row of the energy storage module are on the same side, the two fixing blocks 6 are respectively clamped in the corresponding limiting grooves 41 on the same end plate 4. When the positive output row and the negative output row of the energy storage module are arranged on two sides of the electric core group, the two fixing blocks 6 are respectively clamped in the limiting grooves 41 on the two end plates 4.

The energy storage module of this embodiment is still including the second insulation board 8 that is located the top of busbar 3, and the both ends of second insulation board 8 are fixed mounting respectively on the end plate 4 that corresponds, have realized that energy storage module's upper end is insulating.

As shown in fig. 2 and fig. 3, the upper end of the end plate 4 has a mounting hole 42 in the middle of the two limiting grooves 41, and the second insulating plate 8 has positioning holes 81 at two ends along the length direction. The end plate 4 and the second insulating plate 8 of the present embodiment are fixedly connected by bolts. The bolts pass through the positioning holes 81 and are threadedly coupled with the corresponding mounting holes 42.

In other alternative embodiments, the end plate 4 and the second insulating plate 8 may be fastened by clamping or the like.

The specific assembly process of the energy storage module of this embodiment is:

during installation, firstly, a plurality of battery cores 2 are placed on a workbench of a production line of a production workshop, then the battery cores 2 are arranged side by side into battery core units in a series-parallel connection mode, and the first insulating plate 7, the battery core units, the third insulating plate 9 and the end plate 4 are assembled on the tray 1. And then the binding belt 5 and the fixing block 6 are installed. And then, the positive posts 21 and the negative posts 22 of the plurality of battery cells 2 are connected in series through the bus bar 3, the positive posts 21, the negative posts 22 and the bus bar 3 of the battery cells 2 are welded, and finally, the second insulating plate 8 is installed on the end plate 4 through a bolt, so that the energy storage module can be assembled.

The energy storage module of this embodiment need not to use structure to glue and silica gel pad through assembling the constitution, has simplified energy storage module's assembly procedure and assembly structure, has reduced manufacturing cost.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An energy storage module, comprising:

a tray (1), the tray (1) having a receiving cavity;

a plurality of battery cells (2), wherein the battery cells (2) are arranged side by side along a first direction to form a battery cell unit;

the bus bar (3) is used for electrically connecting the positive pole posts (21) and the negative pole posts (22) of two adjacent battery cores (2) through the bus bar (3);

end plate (4), electric core unit follows the both ends of first direction all are provided with end plate (4), in order to form with hold the electric core group of chamber looks adaptation, the lower extreme of electric core group inlay in hold the intracavity.

2. The energy storage module according to claim 1, characterized in that it further comprises a binding band (5), said binding band (5) being placed around the upper end of the group of electric cores.

3. Energy storage module according to claim 1, characterized in that the tray (1) comprises a bottom plate (11) and side plates (12), a plurality of the side plates (12) being arranged around the edge of the bottom plate (11) and enclosing the receiving cavity.

4. The energy storage module according to claim 3, wherein the bottom plate (11) is provided with heat dissipation holes (111), and the heat dissipation holes (111) fall into the lower end surface of the electric core group towards the projected area of the electric core group.

5. Energy storage module according to claim 3, characterized in that the upper parts of the two side plates (12) of the tray (1) which are arranged opposite one another in a second direction, the first direction being perpendicular to the second direction, extend towards the interior of the receiving chamber with a thickening (121).

6. The energy storage module according to claim 3, characterized in that the energy storage module further comprises a first insulating plate (7), wherein the first insulating plate (7) is arranged between the lower end face of the electric core group and the bottom plate (11).

7. Energy storage module according to any of claims 1-6, characterized in that it further comprises a second insulating plate (8) located above the busbars (3), the two ends of the second insulating plate (8) being fixedly mounted on the corresponding end plates (4), respectively.

8. Energy storage module according to any of claims 1-6, characterized in that the end plate (4) is a metal plate, the energy storage module further comprising a third insulating plate (9), the third insulating plate (9) being arranged between the end plate (4) and the cell (2) on the corresponding outer side of the cell unit.

9. The energy storage module according to any of claims 1-6, characterized in that the energy storage module further comprises a fixing block (6), the fixing block (6) being configured to fix and support a positive output row or a negative output row of the cell units; spacing groove (41) have been seted up on the top of end plate (4), fixed block (6) with spacing groove (41) joint cooperation.

10. A battery comprising the energy storage module of any one of claims 1-9.