CN213340632U

CN213340632U - Battery module

Info

Publication number: CN213340632U
Application number: CN202022665171.XU
Authority: CN
Inventors: 尹华浩; 杨华; 王向荣
Original assignee: Guangzhou Great Power Energy & Technology Co ltd
Current assignee: Guangzhou Great Power Energy & Technology Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-06-01
Anticipated expiration: 2030-11-17

Abstract

The utility model provides a battery module, which relates to the technical field of battery correlation technique and comprises a battery module main body, wherein the battery module main body comprises a plurality of battery cores with positive and negative electrodes, and the battery cores are sequentially connected in series; the plurality of battery cores are arranged in groups to form a plurality of battery core groups arranged side by side; a first insulating isolation plate is arranged between every two adjacent electric core groups. The utility model provides a plurality of electric cores of battery module main part of battery module can be arranged and form a plurality of electric core groups in groups to make the electric core quantity of battery module double, compare in the module of the electric core of current equal quantity in groups, improved the efficiency that the module is in groups greatly, reduced the use of spare part, the cost is reduced.

Description

Battery module

Technical Field

The utility model belongs to the technical field of the technique that the battery is correlated with and specifically relates to a battery module is related to.

Background

With the attention of the public on the environment, green and low-carbon travel begins to prevail, electric automobile products are developed day by day and vigorous, and the market shows the situation of two vigorous productions and sales. Under the countervailing policy of subsidy grade withdrawal, vehicle enterprises continuously conduct cost pressure to an upstream industrial chain, and power battery enterprises face huge cost pressure, so that on one hand, the production cost of batteries needs to be continuously reduced to promote the promotion of a new energy industry; on the other hand, the battery performance needs to be improved continuously to avoid being eliminated by the market. The essence of reducing cost and improving performance is contradictory, and thus battery enterprises need to continuously optimize the cell materials, the production process, the application of pack new materials and the pack structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery module to solve present module and organize technical problem of inefficiency.

The utility model provides a battery module, which comprises a battery module main body, wherein the battery module main body comprises a plurality of battery cores with positive and negative electrodes, and the battery cores are sequentially connected in series; the plurality of battery cores are arranged in groups to form a plurality of battery core groups arranged side by side; a first insulating isolation plate is arranged between every two adjacent electric core groups.

Furthermore, a second insulating isolation plate with a pasting layer is arranged between the adjacent electric cores of the electric core group, and the second insulating isolation plate enables the electric cores to be pasted to form a whole.

Furthermore, the device also comprises an end plate, a lower bottom plate and an upper cover plate;

the battery module comprises a battery module body and is characterized in that end plates are arranged at two ends of the length direction of the battery module body, the lower end of the battery module body is wrapped by a lower bottom plate, and an upper cover plate is arranged at the upper end of the battery module body.

Further, the adjacent electric cores are connected with a positive electrode and a negative electrode through an aluminum bar; the aluminum bar is provided with a fixing hole, the upper cover plate is provided with an insulating fixing piece connected with the fixing hole, and the insulating fixing piece is matched with the fixing hole to enable the upper cover plate to be fixed on the battery module main body.

Further, the battery module main body is sleeved with a fixing belt used for fixedly connecting the end plate with the battery module main body.

Furthermore, the corners of the two sides of the end plate in the length direction are provided with fixing grooves matched with the fixing belts.

Furthermore, the end plate comprises a front panel and a rear panel connected with the front panel, a plurality of positioning columns are arranged on the rear panel, positioning holes matched with the positioning columns are formed in the front panel, and the fixing grooves are formed in the front panel.

Further, the fixed band includes strap and insulating band, the strap with the insulating band interval sets up, just the strap cover is established outside the end plate.

Furthermore, an inner convex plate facing to the other end plate is arranged on the end plate, and the two opposite inner convex plates are used for spacing two adjacent electric core groups.

Further, the lower bottom plate is made of Mylar.

The utility model provides a plurality of electric cores of battery module main part of battery module can be arranged and form a plurality of electric core groups in groups to make the electric core quantity of battery module double, compare in the module of the electric core of current equal quantity in groups, improved the efficiency that the module is in groups greatly, reduced the use of spare part, the cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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 view of the battery module shown in fig. 1 without an upper cover plate;

FIG. 3 is a schematic diagram illustrating an arrangement of electric core assemblies of the battery module shown in FIG. 1;

fig. 4 is a schematic structural view illustrating an arrangement of first and second insulating spacers of the battery module shown in fig. 1;

fig. 5 is a schematic structural view of an end plate of the battery module shown in fig. 1;

fig. 6 is a structural view of a rear panel of the end panel shown in fig. 5.

Icon: 100-a battery module main body; 200-an upper cover plate; 300-an insulating fixture; 400-fixing the belt; 401-a metal strip; 402-insulating tape; 500-end plate; 501-front panel; 5011-locating holes; 502-a back panel; 5021-a positioning column; 5022, an inner convex plate; 600-a lower bottom plate; 700-fixed groove; 800-aluminum row; 900-a first insulating separator plate; 110-a second insulating separator; and (4) 120-cell.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-6, the present invention provides a battery module, which includes a battery module main body 100, where the battery module main body 100 includes a plurality of battery cells 120 having positive and negative electrodes, and the battery cells 120 are sequentially connected in series; the plurality of battery cells 120 are arranged in groups to form a plurality of battery cell groups arranged side by side; a first insulating isolation plate 900 is arranged between two adjacent electric core groups.

In some embodiments, the battery module main body 100 of the battery module has a plurality of battery cells 120 connected in series in sequence, and the plurality of series are divided into a plurality of battery cell groups arranged side by side; the first insulating isolation plate 900 disposed between two adjacent battery cell groups can effectively prevent the adjacent battery cells 120 from contacting.

The first insulating isolation plate 900 is generally made of foamed rubber cotton, and the first insulating isolation plate 900 may also be made of other insulating materials.

As shown in fig. 3, based on the above embodiment, further, a second insulating isolation plate 110 having an adhesive layer is disposed between adjacent electric cells 120 of the electric core assembly, and the second insulating isolation plate 110 enables a plurality of electric cells 120 to be adhered to form a whole.

In order to integrate the electric core assembly and isolate the adjacent electric cores 120, a second insulating isolation plate 110 is arranged between the adjacent electric cores 120, and a structural adhesive is coated on the contact surface between the second insulating isolation plate 110 and the electric cores 120, so as to form an adhesive layer on the second insulating isolation plate 110, the plurality of electric cores 120 of the electric core assembly are integrated through the second insulating isolation plate 110 with the adhesive layer, wherein the structural adhesive is generally selected from structural adhesives capable of conducting heat, such as EV485 heat-conducting silica gel. The second insulating spacer 110 is a PC sheet, chemically named polycarbonate, which is a thermoplastic material.

Based on the above embodiments, further, the present invention further includes an end plate 500, a lower bottom plate 600 and an upper cover plate 200;

the end plates 500 are provided at both ends of the battery module main body 100 in the length direction, the lower plate 600 wraps the lower end of the battery module main body 100, and the upper cover plate 200 is provided at the upper end of the battery module main body 100.

The two ends of the length direction of the battery module main body 100 are respectively provided with the end plates 500, and the two end plates 500 clamp the electric core group of the battery module main body 100, so that the electric cores 120 of the electric core group are not separated.

The lower plate 600 is generally provided with a groove, and the lower end of the battery module main body 100 is disposed in the groove, so that the lower end of the battery cell 120 of the battery module main body 100 is isolated by the lower plate 600, and therefore, a fault caused by adhesion of metal chips to the bottom of the battery cell 120 is avoided.

As shown in fig. 1, based on the above embodiment, further, the adjacent battery cells 120 are connected to the positive electrode and the negative electrode through the aluminum bars 800; the aluminum bar 800 is provided with fixing holes, the upper cover plate 200 is provided with insulating fixing members 300 connected to the fixing holes, and the insulating fixing members 300 are engaged with the fixing holes to fix the upper cover plate 200 to the battery module main body 100.

In some embodiments, the adjacent battery cells 120 are connected in series through the aluminum row 800, a raised protrusion is disposed on the aluminum row 800, a general fixing hole is disposed on the protrusion, and a groove formed by the protrusion is used for accommodating the second insulating isolation plate 110, so as to avoid mutual influence between the aluminum row 800 and the second insulating isolation plate 110.

Based on the above embodiment, further, the fixing band 400 for fixedly connecting the end plate 500 to the battery module main body 100 is sleeved outside the battery module main body 100.

The end plates 500 at both ends of the battery module main body 100 provide mounting points for fixing the battery module main body 100, serving as a housing of the battery module main body 100, and the fixing band 400 is fitted around the outside of the battery module main body 100, and does not contact the battery module main body 100, but acts on the end plates 500, so that the two end plates 500 clamp the battery module main body 100.

In order to prevent the fixing band 400 from being easily separated from the end plate 500 of the battery module main body 100, fixing grooves 700 to be engaged with the fixing band 400 are formed at corners of both sides of the end plate 500 in the longitudinal direction.

Fixing grooves 700 are formed at corners of both sides of the end plate 500 in the length direction, and the length direction of the end plate 500 is the same as the width direction of the battery module main body 100; when the fixing band 400 is fitted over the battery module main body 100, the battery module main body 100 is pressed by a relevant production tool, and after the battery module main body 100 is pressed by a predetermined length, the fixing band 400 is fitted over the battery module main body 100 and is snapped into the fixing groove 700; when the related production tool is loosened, the battery module main body 100 is expanded to some extent after being separated from the constraint, so that the fixing band 400 is completely locked in the fixing groove 700, and the whole battery module main body 100 is formed into a whole.

As shown in fig. 5 and 6, based on the above embodiment, further, the end plate 500 includes a front panel 501 and a rear panel 502 connected to the front panel 501, a plurality of positioning posts 5021 are disposed on the rear panel 502, a positioning hole 5011 matched with the positioning posts 5021 is disposed on the front panel 501, and the fixing groove 700 is disposed on the front panel 501.

The end plate 500 has a front panel 501 and a rear panel 502, generally, the front panel 501 is made of metal material, such as stainless steel, and the rear panel 502 is made of insulating material, such as plastic, in order to increase the strength of the whole end plate 500, a mode of combining the front panel 501 and the rear panel 502 is adopted, so that the strength is increased, and the problem of insulation is solved.

In order to increase the strength of the fixing band 400, further, the fixing band 400 includes a metal band 401 and an insulating band 402, the metal band 401 is disposed at an interval from the insulating band 402, and the metal band 401 is sleeved outside the end plate 500.

The fixing band 400 includes a metal band 401, such as a metal band 401 using a stainless steel material; an insulating tape 402, the insulating tape 402 is generally made of pvc material; the metal tape 401 is in direct contact with the end plate 500, and the insulating tapes 402 are located on both sides of the battery module main body 100 in the length direction, and generally do not contact with the battery module main body 100, and are made of an insulating material, so that there is no influence even if the metal tape contacts with the battery cell 120 exposed from the battery module main body 100.

Based on the above embodiment, further, an inner convex plate 5022 facing the other end plate 500 is disposed on the end plate 500, and two opposite inner convex plates 5022 are used for spacing two adjacent electric core groups.

In order to keep the adjacent groups of electric cores spaced, the end plate 500 is provided with an inner projection plate 5022, the inner projection plate 5022 keeps the groups of electric cores spaced and avoids the adjacent groups of electric cores from contacting.

Based on the above embodiments, further, the lower plate 600 is made of mylar.

The Mylar film is the plastic foil, can wrap up the lower extreme of battery module main part 100 to there is the metal fillings to glue in electric core 120 bottom, arouses insulation fault.

The utility model provides a plurality of electric cores 120 of battery module main part 100 of battery module can be arranged and form a plurality of electric core groups in groups to make the electric core 120 quantity of battery module double, compare in the module of the electric core 120 of current equal quantity in groups, improved the efficiency of module in groups greatly, reduced the use of spare part, the cost is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A battery module is characterized by comprising a battery module main body, wherein the battery module main body comprises a plurality of battery cores with positive and negative electrodes, and the battery cores are sequentially connected in series; the plurality of battery cores are arranged in groups to form a plurality of battery core groups arranged side by side; a first insulating isolation plate is arranged between every two adjacent electric core groups.

2. The battery module according to claim 1, wherein a second insulating separator plate with an adhesive layer is arranged between adjacent cells of the cell pack, and the second insulating separator plate enables the cells to be adhered to form a whole.

3. The battery module according to claim 1, further comprising end plates, a lower base plate, and an upper cover plate;

4. The battery module according to claim 3, wherein the adjacent cells are connected with a positive electrode and a negative electrode through an aluminum bar; the aluminum bar is provided with a fixing hole, the upper cover plate is provided with an insulating fixing piece connected with the fixing hole, and the insulating fixing piece is matched with the fixing hole to enable the upper cover plate to be fixed on the battery module main body.

5. The battery module according to claim 3, wherein the battery module main body is externally sleeved with a fixing band for fixedly connecting the end plate with the battery module main body.

6. The battery module according to claim 5, wherein fixing grooves to be engaged with fixing bands are provided at corners of both sides of the end plates in a length direction.

7. The battery module as claimed in claim 6, wherein the end plate comprises a front plate and a rear plate connected to the front plate, wherein a plurality of positioning posts are disposed on the rear plate, positioning holes engaged with the positioning posts are disposed on the front plate, and the fixing grooves are disposed on the front plate.

8. The battery module according to claim 7, wherein the fixing band comprises a metal band and an insulating band, the metal band is spaced apart from the insulating band, and the metal band is sleeved outside the end plate.

9. The battery module according to claim 3, wherein the end plates are provided with inner convex plates facing the other end plate, and two opposite inner convex plates are used for spacing two adjacent electric core groups.

10. The battery module according to claim 3, wherein the lower plate is made of Mylar.