CN204793052U - Convenient series -parallel lithium ion battery module - Google Patents

Abstract

The utility model relates to a lithium ion battery group especially relates to a convenient series -parallel lithium ion battery module with battery module field. The utility model discloses a technical scheme do: convenient series -parallel lithium ion battery module, including the inner shell and the shell of inside and outside nestification, the shell is equipped with can dismantle the upper cover, establishes the two electrically conductive pole pieces that link to each other respectively with the positive negative pole of group battery between inner shell and shell, the electrically conductive tetrahedron of pole piece for getting rid of a bottom surface and a side, open the last bottom surface of electrically conductive pole piece has utmost point post hole and utmost point post mounting hole, the utmost point post hole that the electrode of group battery passed on the electrically conductive pole piece to expose, the group battery was wrapped up respectively to three sides of two electrically conductive pole pieces both sides, the electrode arch is established to the surface of three sides of pole piece of electrically conducting, two opposite flanks of shell are opened has two sets of dovetails, and the both sides face is opened in addition has a set of dovetail, and shell wall, adjacent battery module offering connector in the dovetail are had a perfect understanding to the bottom of dovetail.

Description

Lithium-ion battery modules that are conveniently connected in series and parallel

technical field

The utility model relates to the field of battery modules for lithium-ion battery packs, in particular to a convenient series-parallel lithium-ion battery module.

Background technique

With the rapid development of lithium-ion batteries, people's expectations for lithium-ion batteries to replace lead-acid batteries are more obvious. The emergence of new lithium-ion battery packs has brought dawn to the development of lithium-ion batteries. Among them, the development of lithium-ion module battery pack is more urgent. Lithium-ion module batteries are mainly used in electric vehicles and electric bicycles, and can also be used in lighting systems, base station backup power, small power systems, etc., which is the development trend of lithium-ion batteries in the future. However, the current series-parallel connection of battery modules for lithium-ion battery packs is relatively complicated, and a lot of time will be wasted for series-parallel connection, and later maintenance is also relatively difficult. A module that is relatively easy to be connected in series and parallel is indispensable for the utility model.

Contents of the invention

The purpose of the utility model is to provide a convenient series-parallel lithium-ion battery module to solve the assembly and use of large-scale battery modules.

In order to achieve the above object, the technical solution adopted by the utility model is:

A lithium-ion battery module convenient for series and parallel connection, including an inner shell and an outer shell nested inside and outside, the outer shell is provided with a detachable upper cover, and two conductive electrodes respectively connected to the positive and negative electrodes of the battery pack are arranged between the inner shell and the outer shell ;

The conductive electrode sheet is a tetrahedron with the bottom surface and one side removed. The upper bottom surface of the conductive electrode sheet is provided with a pole hole and a pole installation hole. The electrodes of the battery pack are exposed through the pole hole on the conductive electrode sheet. The three sides respectively wrap the two sides of the battery pack, and the outer surfaces of the three sides of the conductive electrode sheet are provided with electrode protrusions;

There are two sets of dovetail grooves on the two opposite sides of the shell, and a set of dovetail grooves on the other two sides. The bottom of the dovetail grooves runs through the shell wall.

Adjacent battery modules plug into the connectors within the dovetail slots.

Preferably, the connector is one of a conductive connector, an insulating connector A and/or an insulating connector B, the conductive connector is in contact with the electrode protrusion on the surface of the conductive electrode sheet, and the edge surface of the battery module is inserted into the Insulated connector B seals the sides.

Preferably, the upper cover is provided with pole installation holes and upper cover installation holes, and the upper and bottom surface of the housing is provided with housing screw holes.

Preferably, the battery pack is formed by spot welding the bracket and the bus bar.

The utility model has the advantages and effects that: the material used for the plastic shell is flame-retardant ABS with stable chemical properties, good heat resistance, and good insulation; High-current charging and discharging; the heat dissipation holes in the inner shell can also more effectively dissipate the heat of the battery cells inside the module; the biggest advantage of this utility model lies in the overall structure, which can be easily connected in series and parallel through the connector.

Description of drawings

Fig. 1 is a schematic diagram of the decomposition structure of the utility model.

Fig. 2 is a schematic diagram of the upper cover of the utility model.

Fig. 3 is a schematic diagram of the shell of the utility model.

Fig. 4 is a structural schematic diagram of the conductive electrode sheet of the present invention.

Fig. 5 is a schematic diagram of the conductive connector in the present invention.

Fig. 6 is a schematic diagram of an insulating connector A in the present invention.

Fig. 7 is a schematic diagram of the insulating connector B in the present invention.

Figure 8 is an overall schematic diagram of the combination of multiple battery modules of the present invention

In the accompanying drawings 1. Upper cover, 2. Pole mounting hole, 3. Pole bolt, 4. Upper cover mounting hole, 5. Screw, 6. Conductive electrode mounting screw, 7. Pole fixing hole, 8. Pole Holes, 9, conductive electrodes, 10, inner shell, 11, cooling holes, 12, conductive protrusions, 13, shell, 14, dovetail groove, 15, shell screw holes, 16, conductive connector, 17, insulating connector A, 18, insulating connector B, 19, battery pack, 20, bracket, 21, bus bar.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

As shown in Figure 1-8, the utility model is a battery module for a lithium-ion battery pack that is easy to be connected in series and parallel, including an upper cover 1, an inner shell 10, an outer shell 13, a conductive electrode sheet 9, a battery pack 19, and an upper cover 1 On the casing 13, the upper cover 1 is provided with a pole hole 7, the conductive electrode sheet 9 is provided with a pole fixing hole 8, the upper cover 1 is provided with a pole installation hole 2, and the casing 13 is provided with a casing screw hole 15. The cover 1 and the outer shell 13 are screwed with screws 5 through the upper cover installation hole 4 and the outer shell screw hole 15. The material of the upper cover 1, the inner shell 10 and the outer shell 13 is flame-retardant ABS; the conductive electrode 9 is fixed by a pole Hole 8 is connected to the polarity of the battery pack by fixing; the battery module and the battery module are connected in series and parallel through the conductive connector 16, and the fastening between the modules can also be performed through the insulating connector A17 , plugged with insulating connector B18 when not in use.

The conductive electrode sheet 9 has a four-sided structure, the top surface is connected to the polarity of the battery pack, the three sides are respectively combined with series-parallel conductive electrodes, and the three sides are provided with conductive protrusions 12 . The inner shell 10 is provided with a plurality of cooling holes 11 . The battery pack 19 is assembled by spot welding the bracket 20 and the bus bar 21 . The product is novel in design, simple in structure, easy to operate and easy in daily maintenance.

The combination mode of the utility model is reasonable and the operation is flexible; the battery module for lithium-ion battery packs easily connected in series and parallel by adopting this structure combination can be applied to energy storage projects, electric vehicles, communication equipment, patrol cars, sightseeing cars, etc. The characteristics of small size, light weight, good firmness, high safety performance and easy series-parallel connection also improve the cycle performance of lithium-ion batteries, more effectively improve the efficiency of production and installation and facilitate after-sales maintenance.

Easy-to-series-parallel lithium-ion battery modules are widely used in a wide range of applications, and the market demand is relatively large. The structure of the shell largely determines the cycle performance and aesthetics of the battery and more effectively improves the series-parallel connection of battery modules. Adopting the utility model can improve and solve this problem very well. With the rise of new energy sources, whether it is the characteristics of the lithium-ion battery itself or the current status quo of our country, the development of lithium-ion power batteries will be the key to the industrialization of new energy sources in our country. The main direction, in the future power energy market, lithium-ion batteries will be thriving.

The above-mentioned embodiment is only to describe the preferred implementation of the present utility model, not to limit the design and protection scope of the present utility model. Various modifications and improvements made in the technical solution of the utility model shall fall within the scope of protection of the utility model.

Claims (5)

1. one kind facilitates series-parallel lithium ion battery module, comprise inside and outside nested inner casing (10) and shell (13), it is characterized in that, described shell (13) is provided with dismountable upper cover (1), establishes two electric conduction electrode-plates (9) be connected respectively with the both positive and negative polarity of battery pack (19) between inner casing (10) with shell (13);

Electric conduction electrode-plate (9) is the tetrahedron removing bottom surface and a side, the upper bottom surface of electric conduction electrode-plate (9) has pole column hole (8) and pole fixing hole (7), the electrode of battery pack (19) exposes through the pole column hole (8) on electric conduction electrode-plate (9), three sides of two electric conduction electrode-plates (9) wrap up the both sides of battery pack (19) respectively, and the outer surface of three sides of electric conduction electrode-plate (9) establishes conductive bumps (12);

The two relative side of described shell (13) has two groups of dovetail grooves (14), another two sides have one group of dovetail groove (14), the through shell wall in bottom of dovetail groove (14), adjacent battery modules inserts connector in dovetail groove (14).

2. according to claim 1ly facilitate series-parallel lithium ion battery module, it is characterized in that, described connector is Elecrical connector (16), insulated connectors A(17) and/or insulated connectors B(18) in one, Elecrical connector (16) contacts with the electrode protrusion (12) on electric conduction electrode-plate surface.

3. according to claim 1 and 2ly facilitate series-parallel lithium ion battery module, it is characterized in that, insulated connectors B(18 is inserted in the shell edge face of battery modules) by side seal.

4. according to claim 1ly facilitate series-parallel lithium ion battery module, it is characterized in that, upper cover (1) is provided with pole installing hole (2) and upper cover installing hole (4), and shell (13) upper bottom surface is provided with shell screw hole (15).

5. according to claim 1ly facilitate series-parallel lithium ion battery module, it is characterized in that, described battery pack (19) combines spot welding by support (20) and bus-bar (21) and forms.