CN217522088U

CN217522088U - Battery module

Info

Publication number: CN217522088U
Application number: CN202221226232.5U
Authority: CN
Inventors: 尚德华; 张浩然
Original assignee: Aopu Shanghai New Energy Co Ltd
Current assignee: Aopu Shanghai New Energy Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-30
Anticipated expiration: 2032-05-20

Abstract

The embodiment of the utility model discloses battery module, include: the battery comprises a battery monomer group, a fixing component, a heat conducting fin and a ventilation mounting plate; the battery monomer group is formed by arranging a plurality of battery monomers and buffer sheets arranged among the battery monomers at intervals, and is fixed on the fixing component in an inserting mode; the battery monomer group the fixed subassembly passes through the conducting strip with the ventilation mounting panel is connected, so that battery module normally works, can solve among the prior art battery module structure loose easily, and the cotton aversion scheduling problem of electric core bubble, and have advantages such as easy installation, structure are firm and with low costs.

Description

Battery module

Technical Field

The embodiment of the utility model provides a relate to battery technical field, especially relate to a battery module.

Background

The lithium ion battery is divided into a square-shell battery, a cylindrical battery and a soft package battery according to a packaging process, has the characteristics of high energy density, long cycle life, safety, environmental protection and the like, and is widely applied to various fields of new energy automobiles, energy storage, 3C and the like.

The electric core is the minimum unit of battery, and in order to obtain higher voltage, bigger energy, often connect electric core series-parallel and form the battery module, connect battery module series-parallel again and form the battery package. In an energy storage system, modules are basic units of a battery pack, and the method of grouping the modules affects the battery pack and even the whole system.

In prior art, the battery module adopts to roll the area mostly and packs into groups with fixed modes such as end plate, electric core, bubble cotton, and rolls the area often not hard up easily in production and use to lead to the loose and module in electric core bubble cotton position nonconformity requirement scheduling problem.

Disclosure of Invention

An embodiment of the utility model provides a battery module has simple structure, with low costs, easily equipment and characteristics such as structure are firm.

The embodiment of the utility model provides a battery module, this module includes: the battery comprises a battery monomer group, a fixing component, a heat conducting fin and a ventilation mounting plate; wherein,

the battery monomer group is formed by arranging a plurality of battery monomers and buffer sheets arranged among the battery monomers at intervals, and is fixed on the fixing component in an inserting mode;

the battery monomer group and the fixing assembly are connected with the ventilation mounting plate through the heat conducting fins, so that the battery module can work normally.

Optionally, the fixing assembly includes: the first end plate, second end plate, a plurality of dead lever and a plurality of nut.

Optionally, the battery module further includes:

the first end plate and the second end plate are positioned at two ends of the battery single unit group;

one end of the fixed rod is provided with a thread;

the first end plate and the four corners of the second end plate are correspondingly provided with first through holes so as to respectively penetrate through the fixing rods and are locked and attached through the nuts.

Optionally, the battery module further includes: a gasket;

the nut is locked and attached to the threads on the fixing rod through a gasket.

Optionally, the battery module further includes:

and the four corners of the buffer sheet are correspondingly provided with second through holes, and the fixing rods are respectively inserted to fix the single batteries.

Optionally, the battery module further includes:

the first end plate and the second end plate are fixedly connected with the ventilation mounting plate through bolts.

Optionally, the battery module further includes:

the bottom of first end plate with the second end plate is equipped with the third through-hole to respectively with through-hole on the ventilation mounting panel carries out fixed connection.

Optionally, a plurality of air ducts are arranged on the ventilation mounting plate to dissipate heat.

Optionally, the buffer sheet takes bakelite as a substrate, and foam is adhered to two sides of the bakelite.

Optionally, the heat conducting fin is a heat conducting silica gel pad.

The embodiment of the utility model provides an include: the battery comprises a battery monomer group, a fixing component, a heat conducting fin and a ventilation mounting plate; the battery monomer group is formed by arranging a plurality of battery monomers and buffer sheets arranged among the battery monomers at intervals, and is fixed on the fixing component in an inserting mode; the battery monomer group the fixed subassembly passes through the conducting strip with the ventilation mounting panel is connected, so that battery module normally works, can solve among the prior art battery module structure loose easily, and the cotton aversion scheduling problem of electric core bubble, and have advantages such as easy installation, structure are firm and with low costs.

Drawings

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

fig. 2 is a schematic structural diagram of a first end plate according to an embodiment of the present invention;

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

fig. 4 is a schematic structural view illustrating a connection between a fixing rod and a nut according to an embodiment of the present invention;

fig. 5 is a partial side view of a battery module according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a ventilation mounting plate according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present invention, the battery module includes: a battery cell group 10, a fixing member (not shown), a heat conductive sheet 30, and a ventilation mounting plate 40; wherein,

the battery cell group 10 is formed by arranging a plurality of battery cells 110 and buffer sheets 120 arranged at intervals among the plurality of battery cells 110, and is fixed on the fixing component in an inserting manner; the battery cell group 10 and the fixing assembly are connected with the ventilation mounting plate 40 through the heat-conducting sheet 30, so that the battery module normally works.

In an embodiment of the present invention, the fixing assembly includes: a first end plate 210, a second end plate 220, a plurality of securing rods 230, and a plurality of nuts 240.

The battery cell 110 is a basic unit constituting a battery pack, and is generally a lithium ion battery. The buffer sheet 120 is used as a buffer structure between the single batteries, has an area larger than that of the single batteries, and can effectively reduce the wear of the single batteries.

Specifically, the battery cell group 10 is formed by sequentially arranging a plurality of battery cells 110 and a plurality of buffer sheets 120, and the battery cell group 10 is a main structure for supplying power to the battery module.

Fig. 2 is a schematic structural diagram of a first end plate 210 according to an embodiment of the present invention, which includes a first through hole 2110 and a third through hole 2120. Fig. 3 is a schematic structural diagram of a second end plate 220 according to an embodiment of the present invention, which includes a first through hole 2210 corresponding to the first end plate 210, and a bottom third through hole 2220. Fig. 4 is a schematic structural diagram of the connection between the fixing rod 230 and the nut 240 according to an embodiment of the present invention, wherein the fixing rod 230 includes a fixing head 2310, a rod main body 2320, and a thread (not shown) corresponding to the nut 240.

In this embodiment, the battery module further includes: the first end plate 210 and the second end plate 220 are located at two ends of the battery cell pack 10; one end of the fixing rod 230 is provided with a thread; the first end plate 210 and the second end plate 220 are provided with first through holes at four corners thereof, so as to respectively penetrate through the fixing rods and be locked and attached by the nuts.

Specifically, the first end plate 210 and the second end plate 220 are located at two ends of the battery cell pack 10, and are used for wrapping and fixing the battery cell pack 10. The first end plate 210 has first through holes 2110 at four corners thereof for fixedly connecting with one end of the fixing rod 230, for example, the fixing head 2310 of the fixing rod 230. Specifically, for example, the first through hole 2110 of the first end plate 210 may have a diameter larger than that of the fixing head 2310 and be nested outside the fixing head 2310. The second end plate 220 has first through holes 2210 at four corners for fixedly connecting to the other end of the fixing rod 230, for example, by means of the screw threads of the nut 240 and the fixing rod 230. In the embodiment, the fixing rods 230 are respectively inserted through the first through holes of the first end plate 210 and the second end plate 220 for fixing, and are locked and attached by the nuts 240.

Fig. 5 is a partial side view of a battery module according to an embodiment of the present invention, as shown in fig. 5, including a gasket 250; the nut 240 is lockingly attached to the threads on the fixation rod 230 by a washer 250. The gasket 250 has elasticity, so that the nut 240 and the fixing rod 230 are fixed more tightly, and the pretightening force can be set at 3000N by adjusting the position of the nut 240, wherein the pretightening force can be adjusted and controlled by the torque locked by the bolt.

In an embodiment of the present invention, the battery module further includes: the four corners of the buffer sheet 120 are correspondingly provided with second through holes, which are respectively inserted into the fixing rods 230 to fix the battery cells 110.

Specifically, the area of the buffer sheet 120 in this embodiment is greater than the area of the battery cell 110, and the four corners of the buffer sheet 120 are provided with the second through holes, so that the fixing rod 230 can be inserted into the second through holes to fix the battery cell 110, and such a structural arrangement can make the position of the battery cell 110 more firm.

In an embodiment of the present invention, the battery module further includes: the first end plate 210 and the second end plate 220 are fixedly connected to the ventilation mounting plate by bolts 50 (shown in fig. 5). The bottoms of the first end plate 210 and the second end plate 220 are provided with third through holes to be respectively fixedly connected with the through holes on the ventilation mounting plate.

Specifically, the first end plate 210 and the second end plate 220 may be configured as a hollow structure, and third through holes are provided at the bottoms of the first end plate 210 and the second end plate 220, and are fixedly connected by bolts.

Fig. 6 is a schematic structural diagram of a ventilation mounting plate according to an embodiment of the present invention, which includes an air duct 410 and a through hole 420. In the embodiment of the present invention, the ventilation mounting plate is provided with a plurality of air channels 410 for heat dissipation.

In the embodiment of the present invention, the buffer sheet 120 uses bakelite as a base body, and foam is adhered to both sides of the bakelite. In the embodiment of the present invention, the heat conducting fin is a heat conducting silica gel pad.

Specifically, the buffer sheet base body can be selected from bakelite, the thickness is 1 to 2mm, and foam is adhered to two sides of the bakelite base body. The bakelite in the embodiment provides certain strength, has heat resistance, and can avoid thermal runaway. The heat conduction silica gel pad in this embodiment directly pastes on battery monomer group and the ventilation mounting panel through the viscose mode.

Specifically, the present embodiment mainly comprises the following components: the end plate A (first end plate), the end plate B (second end plate), a fixed rod, an electric core (single battery), a special buffer sheet, a ventilation mounting plate, a heat-conducting silica gel sheet (heat-conducting sheet), a nut, a gasket and the like. The installation mode is that four fixing rods with bolts penetrate through the end plate A, special buffer plates penetrate through the fixing rods to be positioned, and the battery cell is arranged between the buffer plates. One end of the fixing rod is provided with a stud, and the other end of the fixing rod is provided with threads. The end plate B penetrates through the fixing rod, and the battery cores are tightly compressed and fixed under the locking of the nuts. The lower surface of the end plate is provided with a through hole which is fixed with the ventilation mounting plate. The heat-conducting silica gel sheet is placed below the battery core and is in contact with the ventilation mounting plate.

The dead lever in this embodiment is tightly fixed together with two end plates and electric core, considers that there is better life-span under the electric core circulation charge-discharge uses, and the pretightning force is set at 3000N usually, and the size of pretightning force can be regulated and control by the moment that the bolt lock attaches. In order to make the more complete laminating electric core of buffer chip, special matter buffer chip can be lived electric core parcel according to the unanimous position under the dead lever constraint. Electric core can produce certain heat when charge-discharge, for the messenger avoid electric core to take place the thermal runaway and prolong its life, the module needs better heat dissipation. The heat that electricity core produced transmits the ventilation mounting panel below under the conduction of heat conduction silica gel pad, and wherein the ventilation mounting panel is aluminium system, and is equipped with a plurality of wind channels in the ventilation mounting panel, can make the battery module go out the better transmission of heat under the fan drives.

The battery module in this embodiment has the characteristics of simple structure, low cost, easy assembly and high reliability. Such a module is more stable than conventional roll strapping. In addition, because under external factors, the pretightning force can change, so the pretightning force of battery module in this embodiment can suitably be regulated and control to keep the pretightning force invariable, and be equipped with the ventilation mounting panel that has the wind channel and can better dispel the heat, guarantee battery module normal efficiency work.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A battery module, comprising: the battery unit comprises a battery unit group, a fixing assembly, a heat conducting fin and a ventilation mounting plate; wherein,

2. The battery module according to claim 1, wherein the fixing member comprises: the first end plate, second end plate, a plurality of dead lever and a plurality of nut.

3. The battery module according to claim 2, further comprising:

one end of the fixed rod is provided with a thread;

4. The battery module according to claim 3, further comprising: a gasket;

5. The battery module according to claim 4, further comprising:

6. The battery module according to claim 5, further comprising:

7. The battery module according to claim 6, further comprising:

8. The battery module according to claim 7, wherein a plurality of air ducts are provided on the ventilation mounting plate to dissipate heat.

9. The battery module according to claim 8, wherein the buffer sheet is formed by using bakelite as a base body and foam adhered to both sides of the bakelite.

10. The battery module according to claim 9, wherein the heat-conducting sheet is a heat-conducting silicone pad.