CN217641626U - Electricity core module - Google Patents

Abstract

The utility model discloses an electric core module. It includes a left end plate, a right end plate, a middle end plate, a busbar assembly and a plurality of short modules, each short module includes a plurality of single cells, and the plurality of short modules are installed on the left Between the side end plate and the right end plate, the middle end plate is arranged between adjacent short modules, and the busbar assembly is installed on the top of a plurality of short modules to connect all the single cells in series. Under the condition of limited vehicle mass and space, the utility model combines a plurality of short modules into a long module by adding an intermediate end plate and a series-designed busbar assembly, thereby realizing a long module with high energy. The solution reduces the number of parts and saves space, which greatly saves product costs.

Description

A battery module

technical field

The utility model belongs to the technical field of power batteries, in particular to a battery core module.

Background technique

In the market, electric vehicles with high mileage are generally more favored by the market, so battery packs with higher energy density are usually pursued in the design stage, that is, the battery pack can have a higher energy reserve under the same weight. , The conventional design idea is to incorporate more modules into the battery pack to pursue higher energy reserves. However, it is often limited by vehicle mass and space constraints, and it is impossible to directly add more modules to the battery pack. For example, when two short modules are merged, each short module has two end plates, a total of four end plates, occupying a large space; at the same time, in order to connect the two short modules in series, additional copper is added in the middle. Row connection, more bolts are tightened, which further increases the space, resulting in an increase in the overall volume of the battery pack that cannot meet the vehicle space design requirements.

Utility model content

The purpose of the present invention is to solve the above-mentioned deficiencies of the background technology, and to provide a battery cell module consisting of a plurality of short modules and growing modules, which effectively reduces the number of parts, saves space, and greatly saves product costs.

The technical scheme adopted by the utility model is: an electric core module, comprising a left end plate, a right end plate, a middle end plate, a busbar assembly and a plurality of short modules, each short module comprising a plurality of A single cell, a plurality of short modules are installed between the left end plate and the right end plate, the middle end plate is arranged between adjacent short modules, and the bus bar assembly is installed in the multiple The top of each short module connects all the single cells in series.

Further, the busbar assembly includes an isolation plate, a flexible circuit board and a plurality of bars, the isolation plate is arranged on the top of a plurality of short modules, and a plurality of bar placement slots are arranged on the isolation plate, so The plurality of bars are respectively arranged in a plurality of bar placement slots, the poles of the single cell are connected to the bottom of the bars through the via holes in the bar placement slot, the flexible circuit board is arranged on the top of the isolation plate, and the flexible circuit A number of connecting pins protrude from both sides of the board to be connected to a number of bars respectively.

Further, the bar placement slot includes a double-hole placement slot, and the double-hole placement slot is provided with a positive pole via hole for the positive pole of one cell to pass through and a negative pole for another adjacent cell. A negative pole through hole through which the column passes, the positive pole of one cell and the negative pole of another adjacent cell pass through the positive pole through hole, and the negative pole through hole is connected to both ends of the bottom of the bar.

Further, the bar placement slot includes a single-hole placement slot, and the single-hole placement slot is provided with a via hole for a pole post of the power core to pass through, and a pole post of the battery core passes through the via hole and the bottom of the bar plate. connect.

Further, the plurality of short modules, the left end plate, the right end plate and the middle end plate form a long module structure, and the long module structure is locked by a horizontally surrounding fixing belt.

Further, a protective cover is also included, and the protective cover is installed on the top of the bus bar assembly.

Further, an insulating sheet is also included, and the insulating sheet is fixed on the bottom of the plurality of short modules.

Further, the middle end plate is an integral plate-like structure, the middle end plate is provided with connecting holes penetrating up and down, and the side surface of the middle end plate is provided with a weight reduction groove.

Further, the sides of the left end plate and the right end plate away from the short module are both provided with weight-reducing grating grooves.

Under the condition of limited vehicle mass and space, the utility model combines a plurality of short modules into a long module by adding a middle end plate and a series-designed busbar assembly, thereby realizing a long module with high energy. Therefore, the effect of 1+1>2 is achieved, the number of parts is reduced, the space is saved, and the product cost is greatly saved.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic diagram of another perspective of the present invention.

FIG. 3 is a schematic diagram of the present invention without a protective cover.

Fig. 4 is the exploded schematic diagram of the utility model.

5 is a schematic diagram of the left (right) side end plate of the present invention.

FIG. 6 is a schematic diagram of the middle end plate of the present invention.

FIG. 7 is a partial schematic view of the isolation plate of the present invention.

FIG. 8 is a partial schematic diagram of the flexible circuit board of the present invention.

Fig. 9 is the schematic diagram of the pad of the present invention.

In the figure: 1- the first short module; 2- the second short module; 3- the left end plate; 4- the right end plate; 5- the middle end plate; 6- bus bar assembly; 7- protection cover ;8-fixing tape;9-insulation sheet;10-isolation plate;11-flexible circuit board;12-bar sheet;13-bar sheet placement slot;14-via hole;15-connection pin;16-double hole placement slot; 17-single hole placement slot; 18-connection hole; 19-weight reduction slot; 20-grid slot; 21-weight reduction hole; 22-limiting protrusion.

Detailed ways

The specific embodiments of the present utility model will be further described below with reference to the accompanying drawings. It should be noted here that the description of these embodiments is used to help the understanding of the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

As shown in Figures 1-9, the present invention provides a cell module, including a left end plate 3, a right end plate 4, a middle end plate 5, a busbar assembly 6 and a plurality of short modules. The number of short modules is preferably two or three short modules. In this embodiment, there are two short modules, which are the first short module 1 and the second short module 2 respectively. Each short module includes a plurality of short modules. A single cell, the first short module 1 and the second short module 2 are installed side by side between the left end plate 3 and the right end plate 4, and the middle end plate 5 is arranged in the first short module 1 Between the second short module 2 and the second short module 2, the bus bar assembly 6 is installed on the top of the first short module 1 and the second short module 2 to connect all the single cells in series.

In the above solution, the busbar assembly 6 is located between the protective cover 7 and the first short module 1 and the second short module 2, and is used for connecting the cells in series, while integrating the voltage and temperature of the cells and outputting the function. The assembly 6 includes an isolation plate 10 , a flexible circuit board (FPC) 11 and a plurality of bars 12 . The isolation plate 10 is used for fixing the bars 12 and the flexible circuit board 11 , and the bars 12 are used for connecting the cells in series. The isolation plate 10 is arranged on the top of the first short module 1 and the second short module 2, a number of weight-reducing holes 21 are arranged in the middle of the isolation plate 10, and a number of bar placement slots are arranged on both sides of the isolation plate 10 13. The plurality of bars 12 are respectively arranged in the plurality of bar placement slots 13, the poles of the single cell are connected to the bottom of the bars 12 through the vias 14 in the bar placement slot 13, and the flexible circuit board 11 is arranged on the top of the isolation board 10 , and a plurality of connecting pins 15 protruding from both sides of the flexible circuit board 11 are respectively connected to the top of a plurality of bars 12 .

According to the different positions of the battery cells, the bar placement slot 13 includes a plurality of double-hole placement slots 16 and two single-hole placement slots 17. The double-hole placement slot 16 is provided with a positive pole for a battery cell to pass through. A positive pole via hole and a negative pole via hole for passing through the negative pole of another adjacent cell, the positive pole of one cell and the negative pole of the other adjacent cell pass through the positive pole via, The negative pole via hole is connected to both ends of the bottom of the bar. The single-hole placement slot 17 is provided with a via hole for passing one pole of the cell, and one pole of the cell is connected to the bottom of the bar through the via hole. A limiting protrusion 22 is arranged in the middle of the bar piece 12 placed in the double-hole placement groove 16. After the protective cover is installed, the limiting protrusion 22 contacts the protective cover to play a limiting role.

In the above scheme, the first short module 1, the second short module 2, the left end plate 3, the right end plate 4 and the middle end plate 5 form a long module structure, and the long module structure passes through the horizontal One or more fixing belts 8 arranged around are locked, and the material of the fixing belt 8 is stainless steel or plastic steel.

In the above solution, a protective cover 7 is also included. The protective cover 7 is installed on the top of the bus bar assembly 6. The protective cover 7 is made of PC. The protective cover is used to protect the module and can achieve dustproof and insulating effects.

In the above solution, an insulating sheet 9 is also included, and the insulating sheet 9 is fixed on the bottom of the plurality of short modules. The insulating sheet material is PC, which plays the role of insulation.

In the above solution, the middle end plate 5 is an integral plate-like structure, and both sides of the first short module 1 and the second short module 2 are flat, and the middle end plate 5 is provided with up and down penetrations for The connecting holes 18 of the connecting bolts and the front and rear sides of the middle end plate 5 are provided with weight-reducing grooves 19 . The side of the left end plate 3 and the right end plate 4 away from the short module is provided with a weight-reducing grill groove 20 . The grating grooves and the weight-reducing grooves are arranged on the left end plate 3 , the right end plate 4 and the middle end plate 5 , which can reduce the weight and cost of the product.

In the utility model, a middle end plate is added between the adjacent short modules, and then the two short modules are extruded by the end plates on both sides, and a plastic-steel belt and two steel belts (that is, three fixing belts) are installed for bundling at the same time. In order to ensure that it is not easy to disperse, the busbar assembly is finally welded to the battery core and the entire battery core is connected in series, thus realizing the solution of turning two short modules into long modules, and the number of end plates is only 3 The number of installation bolts is reduced by 2, which reduces the number of parts and saves space, and greatly saves product costs.

The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present utility model. All should be covered within the protection scope of the present invention. Contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims (9)

1. A cell module, characterized in that it comprises a left end plate (3), a right end plate (4), a middle end plate (5), a busbar assembly (6) and a plurality of short modules , each short module includes a plurality of single cells, and the plurality of short modules are installed between the left end plate (3) and the right end plate (4), and the middle end plate (5) is provided with Between adjacent short modules, the bus bar assembly (6) is installed on the top of a plurality of short modules to connect all the single cells in series. 2. The battery module according to claim 1, characterized in that: the busbar assembly (6) comprises an isolation plate (10), a flexible circuit board (11) and a plurality of bars (12), the The isolation plate (10) is arranged to fit the tops of the plurality of short modules, the isolation plate (10) is provided with a plurality of bar placement grooves (13), and the plurality of bars (12) are respectively arranged on a plurality of bars for placement In the slot (13), the pole of the single cell is connected to the bottom of the bar (12) through the via hole (14) in the bar placement slot (13), and the flexible circuit board (11) is arranged on the isolation plate (10) On the top, a plurality of connecting pins (15) protruding from both sides of the flexible circuit board (11) are respectively connected to the tops of a plurality of bars (12). 3. The battery module according to claim 2, characterized in that: the bar placement slot (13) comprises a double-hole placement slot (16), and the double-hole placement slot (16) is provided with The positive pole via hole for the positive pole of one cell to pass through and the negative pole via for the negative pole of another adjacent cell to pass through, the positive pole of one cell and the negative pole of the other adjacent cell pass through respectively. The via hole of the positive pole and the via hole of the negative pole are connected to both ends of the bottom of the bar. 4. The battery module according to claim 2, characterized in that: the bar placement slot (13) comprises a single-hole placement slot (17), and the single-hole placement slot (17) is provided with a power supply core A via hole for a pole to pass through, and a pole of the battery core is connected to the bottom of the bar through the via hole. 5. The battery module according to claim 1, wherein the plurality of short modules, the left end plate (3), the right end plate (4) and the middle end plate (5) form a long A modular structure, the long modular structure is locked by a horizontally surrounding fixing belt (8). 6 . The battery module according to claim 1 , further comprising a protective cover ( 7 ), the protective cover ( 7 ) being mounted on the top of the bus bar assembly ( 6 ). 7 . 7 . The battery core module according to claim 1 , further comprising an insulating sheet ( 9 ), and the insulating sheet ( 9 ) is fixed on the bottoms of the plurality of short modules. 8 . 8 . The battery module according to claim 1 , wherein the intermediate end plate ( 5 ) has an integral plate-like structure, and the intermediate end plate ( 5 ) is provided with connecting holes ( 18 ) penetrating up and down, The side of the middle end plate (5) is provided with a weight reduction groove (19). 9. The battery module according to claim 1, characterized in that: the side of the left end plate (3) and the right end plate (4) away from the short module is provided with a weight-reducing grille slot (20).

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