CN206098503U - A kind of pouch battery module for electric vehicle - Google Patents

Abstract

The utility model relates to an electric automobile technical field, concretely relates to laminate polymer battery module for electric automobile. The utility model provides a laminate polymer battery module for electric automobile, including aluminum plate and a plurality of module frame, all install two electric cores on every module frame, connect through the buckle between the adjacent module frame, can require nimble concatenation to go out required battery module according to the capacity and the voltage of difference, the light connection in series -parallel that realizes how electric core, simple structure, convenient operation, the commonality is strong, the integral module both ends that a plurality of module frames are linked to be all are equipped with aluminum plate, set up aluminum plate through the integral module both ends that are linked to be at a plurality of module frames to with the structure of stay bolt locking, the resistant vibration and the impact resistance of module have been strengthened, the integrality and the commonality of module have been improved. The upper end of module frame is equipped with separated first aluminum strip and the second of inlaying and inlays the aluminum strip, and two utmost point ears of electric core inlay the aluminum strip with the second and are connected with the first aluminum strip that inlays respectively simultaneously, and the electric core extremely welding of ear is more convenient.

Description

A kind of pouch battery module for electric vehicle

technical field

The utility model relates to the technical field of electric vehicles, in particular to a soft pack battery module for electric vehicles.

Background technique

my country is currently in the energy conversion period of vehicles, and new energy vehicles are increasing day by day. Lithium-ion powered vehicles are one of the representatives of new energy vehicles. The key technology of lithium-ion powered vehicles is lithium-ion batteries. Many factors need to be considered in its design. On the one hand, ensure that the performance of the battery meets the needs of the vehicle, and on the other hand, ensure that the battery has sufficient safety and reliability. The pouch battery is a high-performance battery composed of positive electrode, negative electrode, electrolyte and packaging film. It can be charged and discharged at a high rate and has a long service life, so it is widely used in the field of new energy vehicles. However, there are many problems in the soft pack battery: the aluminum-plastic film is easy to puncture, the top seal folding edge and the seal are easy to touch and leak, and the aluminum tabs of the battery cells are difficult to weld; it is difficult to connect multiple cells in series and parallel, and the welding process is complicated. While bringing potential safety hazards to the use of pouch batteries, it also greatly limits the application of pouch batteries.

Utility model content

(1) The technical problems to be solved by this utility model are: the existing soft-pack batteries have aluminum-plastic films that are easy to pierce, the top seal folds and seals are easy to touch and damage leakage, and the aluminum tabs of the batteries are difficult to weld; There are many problems such as the difficulty of connecting cores in series and parallel, and the complicated welding process.

(2) Technical solutions

In order to solve the above technical problems, the utility model provides a pouch battery module for electric vehicles, which includes an aluminum plate and a plurality of module frames, each of which is equipped with two battery cells, and the module frames The upper end of the upper end is provided with a first aluminum embedded strip and a second aluminum embedded strip, and each of the electric cores is provided with a first tab connected to the positive pole of the electric core and a second pole connected to the negative pole of the electric core ear, the first tab is connected to one of the first aluminum embedding strip and the second aluminum embedding strip, and the second pole lug is connected to the other of the first aluminum embedding strip and the second aluminum embedding strip One is connected; the adjacent module frames are connected by buckles; the two ends of the integral module formed by connecting multiple module frames are provided with the aluminum plates.

Beneficial effects of the utility model: the soft pack battery module for electric vehicles provided by the utility model includes an aluminum plate and a plurality of module frames, each of the module frames is equipped with two electric cores, and the adjacent modules The frames are connected by buckles, and the required battery modules can be spliced flexibly according to different capacity and voltage requirements, and the series and parallel connection of multiple cells can be easily realized. The structure is simple, the operation is convenient, and the versatility is strong, while reducing production costs cost; both ends of the overall module formed by multiple module frames are provided with the aluminum plate, and the aluminum plate is arranged at both ends of the integral module formed by multiple module frames, and the structure of locking with long bolts strengthens the mold The vibration and shock resistance of the group; the integrity and versatility of the module are improved. The upper end of the module frame is provided with a disjointed first aluminum inlay bar and a second aluminum inlay bar, and at the same time the two tabs of the electric core are connected to the first aluminum inlay bar and the second aluminum inlay bar respectively; The series connection and parallel connection between the pouch batteries only need to be connected with the first aluminum inlay bar and the second aluminum inlay bar, and the series connection and parallel connection between multiple pouch batteries are more convenient; Compared with the pouch battery module provided by this application, the general vibration resistance and impact resistance are better, the aluminum tabs of the battery cells are easy to weld, and the series and parallel connection of multiple battery cells is simpler.

Further, the module frame includes an upper cover plate, a left side plate, a bottom plate and a right side plate which are sequentially connected, and a buckle is provided on one side of the left side plate and/or the right side plate, and the other side A card slot is provided, and two adjacent module frames are locked together through the buckle and the card slot.

Further, an installation hole for installing the battery core is enclosed between the sequentially connected upper cover plate, left side plate, bottom plate and right side plate, and a limit block is provided on the upper side of the upper cover plate, and the The first aluminum embedded strip and the second aluminum embedded strip are respectively located on both sides of the limit block, the first tab is bent at 90° and welded to the first aluminum embedded strip, and the second tab is bent 90° welded with the second aluminum insert.

Further, the upper side of the upper cover plate is provided with a collection line routing groove.

Further, silicone pads are respectively provided on the outer sides of the two aluminum plates arranged at both ends of the integral module.

Further, each of the module frames is provided with reinforcing ribs.

Further, the pouch battery module also includes a module cover, each of the upper ends of the module frame is provided with a slot, and the module cover is provided with a plurality of sockets corresponding to the slots. Tongue, the integral module formed by connecting the upper cover of the module with a plurality of module frames is engaged with the tongue through the slot.

Further, the aluminum plate is arranged between two adjacent module frames.

Further, each of the module frames and the aluminum plate is provided with a bolt hole, and the bolt passes through each of the module frame and the bolt hole on the aluminum plate and is screwed with a nut, and the plurality of module frames and the aluminum plate are screwed together. lock tight.

Further, the upper end of the aluminum plate is provided with an opening, and an insulating block is provided in the opening.

Description of drawings

The advantages of the above-mentioned and/or additional aspects of the utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of an exploded structure of a pouch battery module for an electric vehicle according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of the module frame of the embodiment of the present invention.

Among them, the corresponding relationship between reference numerals and component names in Fig. 1 and Fig. 2 is:

1. Module frame, 11. Upper cover plate, 111. Limiting block, 112. First inlay aluminum bar, 113. Second inlay aluminum bar, 114. Acquisition line routing groove, 115. Reinforcing rib, 116. Plug Slot, 117, bolt hole, 12, left side plate, 121, buckle, 13, right side plate, 14, bottom plate, 15, mounting hole, 2, battery cell, 21, first pole lug, 22, second pole Ear, 3. Aluminum plate, 4. Silicone pad, 5. Module cover, 6. Bolt, 7. Insulation block.

detailed description

In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

As shown in Figure 1 and Figure 2, the utility model provides a pouch battery module for electric vehicles, including an aluminum plate and a plurality of module frames 1, each of which is installed on the module frame 1 There are two electric cores 2, the upper end of the module frame 1 is provided with a first aluminum embedding bar 112 and a second aluminum embedding bar 113 which are not connected, each of the electric cores 2 is provided with a 2 The first tab 21 connected to the positive pole and the second tab connected to the negative pole of the cell 2, the first tab 21 is connected to one of the first aluminum inlay bar 112 and the second aluminum inlay bar 113 connected, the second tab is connected to the other of the first aluminum embedding strip 112 and the second aluminum embedding strip 113; adjacent module frames 1 are connected by buckles 121; multiple module frames 1. Both ends of the integral module are provided with the aluminum plates.

The soft-pack battery module for electric vehicles provided by the utility model includes an aluminum plate and a plurality of module frames 1, and each of the module frames 1 is equipped with two electric cores 2, and between adjacent module frames 1 Through the buckle 121 connection, the required battery modules can be spliced flexibly according to different capacity and voltage requirements, and the series and parallel connection of multiple cells 2 can be easily realized. The structure is simple, the operation is convenient, the versatility is strong, and the production cost is reduced at the same time. The two ends of the overall module formed by a plurality of module frames 1 are provided with the aluminum plates, and the aluminum plates are arranged at both ends of the integral module formed by the plurality of module frames 1, and the structure is locked with long bolts 6 to strengthen the Improve the vibration resistance and impact resistance of the module; improve the integrity and versatility of the module. The upper end of the module frame 1 is provided with a first aluminum embedding strip 112 and a second aluminum embedding strip 113 which are not connected. 113 connection; in this way, the series connection and parallel connection between multiple pouch batteries only need to be connected with the first aluminum embedding bar 112 and the second aluminum embedding bar 113, and the series connection and parallel connection between multiple pouch batteries are more convenient; Compared with the existing pouch battery modules, the pouch battery module provided by this application has better vibration resistance and impact resistance performance, and the welding of the aluminum tabs of the battery cells 2 is easy, and the series and parallel connection of multiple battery cells 2 is simpler.

As shown in Figure 2, the module frame 1 includes an upper cover plate 11, a left side plate 12, a bottom plate 14 and a right side plate 13 connected in sequence, and on the left side plate 12 and/or the right side plate 13 There is a buckle 121 on one side, and a card slot on the other side. The two connected module frames 1 are connected by the buckle 121 and the card slot, and can be spliced flexibly according to different capacity and voltage requirements. The required battery module can be easily realized in series and parallel connection of multi-cells 2 , the structure is simple, the operation is convenient, the versatility is strong, and the production cost is reduced at the same time.

As shown in Figure 2, the mounting hole 15 for installing the electric core 2 is surrounded between the upper cover plate 11, the left side plate 12, the bottom plate 14 and the right side plate 13 connected in sequence, and the upper cover plate 11 A limiting block 111 is provided on the upper side of the upper side, the first aluminum embedding strip 112 and the second aluminum embedding strip 113 are respectively located on both sides of the limiting block 111, and the first tab 21 is bent at 90° to the The first aluminum embedding strip 112 is welded, and the second tab is bent at 90° and welded to the second aluminum embedding strip 113, because the first aluminum embedding strip 112 and the second aluminum embedding strip 112 are arranged on the upper cover of the module frame 1 Aluminum embedded strip 113, so the first tab 21 and the second tab on the pouch battery are respectively connected to the first aluminum embedded strip 112 and the second aluminum embedded strip 113 by welding; for example, the first tab 21 and the second An aluminum inlay bar 112 is welded, the second tab is welded to the second aluminum inlay bar 113, or the first tab 21 is welded to the second aluminum inlay bar 113, and the first tab 21 is welded to the first aluminum inlay bar 112; The welding of the tabs of the battery cells 2 is easier, and the series or parallel connection between multiple battery cells 2 can only be achieved by connecting the first aluminum embedded strips 112 or the second aluminum embedded strips 113 on different module frames 1 to each other. Therefore, it is more convenient to connect in series and parallel among multiple battery packs 2 .

As shown in Figure 2, the upper side of the upper cover plate 11 is provided with a collection line wiring groove 114, and the data wires for collecting parameters such as battery voltage and temperature are placed in the wiring groove so that the low-voltage wiring harness and the battery cell 2. The high-voltage connectors are completely isolated, and the battery information collection wiring harness can be arranged in an orderly manner, which improves the safety of the module, and is also conducive to standardized production operations, making the wiring of the battery information collection wiring harness more standardized and ensuring line safety. Improve the production efficiency of battery module assembly. Further, as shown in FIG. 2 , each of the module frames 1 is provided with reinforcing ribs 115 , preferably, the upper cover plate 11 , the left side plate 12 , the bottom plate 14 and the right side of the module frame 1 Ribs 115 are provided on the boards 13, and the strength of the entire module frame 1 is improved by setting the ribs 115, and the weight of the module frame 1 is also reduced to improve the quality of the entire battery module. Preferably, as shown in Figure 1, the outer sides of the two aluminum plates arranged at both ends of the integral module are respectively provided with silica gel pads, and the entire pouch battery module is protected by the silica gel pads, and the silica gel pads can also play a role. The function of cushioning the impact force can further improve the vibration resistance and impact resistance performance of the module, and can improve the reliability of the entire pouch battery.

As shown in Figure 1, the pouch battery module also includes a module upper cover, and the upper end of each module frame 1 is provided with a slot 116, and the module upper cover is provided with the slot 116. Cooperating tongue, the integral module formed by the module upper cover and a plurality of module frames 1 is engaged with the tongue through the slot 116, and the entire pouch battery is protected by the module upper cover , to avoid the risk of short circuit caused by direct contact of conductive parts of high voltage components. As shown in Figure 1, the aluminum plate is provided between the two adjacent module frames 1, and the aluminum plate is arranged between the two adjacent module frames 1 for isolation, which can prevent the battery cell 2 from leaking. Adjacent battery cells 2 cause pollution; of course, in this application, ventilation grooves can also be provided on the module frame 1 to prevent the high-pressure gas generated during the use of the power battery from spraying out between the gaps and causing secondary damage to the battery cells 2. Short circuit; As shown in Figure 1, the upper end of described aluminum plate is provided with opening, is provided with insulating block in described opening, can prevent the problem of circuit from appearing by the insulating block that is made of insulating material; Simultaneously several batteries 2 are connected in series or There is also a high-voltage isolation block between the parallel modules, and the short-circuit problem can be prevented by setting the high-voltage isolation block; and the design of the output pole protection cover of the module and the 2-pole separator of the cell avoids the possibility of high-voltage components Risk of short circuit due to direct contact of conductive parts.

As shown in Figure 1, each of the module frame 1 and the aluminum plate is provided with a bolt hole 117, and the bolt 6 passes through each of the module frame 1 and the bolt hole 117 on the aluminum plate and is screwed into a nut, Lock multiple module frames 1 and aluminum plates, and lock all module frames 1 and aluminum plates through long bolts 6, which further enhances the vibration resistance and impact resistance of the module; improves the integrity and universality of the module sex.

In summary, the soft-pack battery module for electric vehicles provided by the utility model includes an aluminum plate and a plurality of module frames, each of which is equipped with two battery cells, and one of the adjacent module frames The required battery modules can be spliced flexibly according to different capacity and voltage requirements, and the series and parallel connection of multiple cells can be easily realized. The structure is simple, the operation is convenient, the versatility is strong, and the production cost is reduced at the same time; The aluminum plates are provided at both ends of the overall module formed by connecting multiple module frames, and the aluminum plates are arranged at both ends of the integral module formed by connecting multiple module frames, and the structure is locked with long bolts, which enhances the stability of the module. Vibration and shock resistance; improves module integrity and versatility. The upper end of the module frame is provided with a disjointed first aluminum inlay bar and a second aluminum inlay bar, and at the same time the two tabs of the electric core are connected to the first aluminum inlay bar and the second aluminum inlay bar respectively; The series connection and parallel connection between the pouch batteries only need to be connected with the first aluminum inlay bar and the second aluminum inlay bar, and the series connection and parallel connection between multiple pouch batteries are more convenient; Compared with the pouch battery module provided by this application, the general vibration resistance and impact resistance are better, the aluminum tabs of the battery cells are easy to weld, and the series and parallel connection of multiple battery cells is simpler.

In the description of the present utility model, it should be noted that the orientations or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. a kind of soft package battery module used for electric vehicle, it is characterised in that：Including aluminium sheet and multiple module frameworks, each described mould Two battery cores are mounted on framing, the upper end of the module framework is provided with the first embedding aluminum strip and the second embedding aluminum strip, each institute State and in battery core, be equipped with the first lug being connected with the battery core positive pole and the second lug being connected with the battery core negative pole, it is described First lug is connected with the described first embedding aluminum strip and the second embedding aluminum strip, second lug and the described first embedding aluminum strip It is connected with another in the second embedding aluminum strip；By snapping connection between adjacent module framework；What multiple module frameworks were linked to be Integral module two ends are equipped with the aluminium sheet.

2. soft package battery module used for electric vehicle according to claim 1, it is characterised in that：The module framework includes suitable The upper cover plate of secondary connection, left plate, base plate and right plate, are provided with buckle in the side of the left plate and/or right plate, another Side is provided with draw-in groove, by the buckle and draw-in groove phase clamping between two adjacent module frameworks.

3. soft package battery module used for electric vehicle according to claim 2, it is characterised in that：The upper cover plate that is sequentially connected with, Surround between left plate, base plate and right plate for installing the installing hole of the battery core, on the upside of the upper cover plate, be provided with spacing Block, the first embedding aluminum strip and the second embedding aluminum strip are respectively positioned at the both sides of the limited block, 90 ° of first lug bending and institute The first embedding aluminum strip welding is stated, 90 ° of second lug bending is welded with the described second embedding aluminum strip.

4. soft package battery module used for electric vehicle according to claim 2, it is characterised in that：Set on the upside of the upper cover plate There is gathering line trough.

5. soft package battery module used for electric vehicle according to claim 1, it is characterised in that：Located at the integral module two Silicagel pad is respectively equipped with the outside of two aluminium sheets at end.

6. soft package battery module used for electric vehicle according to claim 1, it is characterised in that：In each described module framework It is equipped with reinforcement.

7. soft package battery module used for electric vehicle according to claim 1, it is characterised in that：The soft package battery module is also Cover including in module, the upper end of each module framework is equipped with slot, in the module lid be provided with it is multiple respectively with institute The tongue of slot corresponding matching is stated, by the slot between the integral module that lid and multiple module frameworks are linked to be in the module With the tongue phase clamping.

8. soft package battery module used for electric vehicle according to claim 1, it is characterised in that：Two adjacent module frameworks Between be provided with the aluminium sheet.

9. the soft package battery module used for electric vehicle according to any one of claim 1 to 8, it is characterised in that：Described in each Be equipped with bolt hole in module framework and the aluminium sheet, bolt through the bolt hole in each described module framework and aluminium sheet and with Nut is screwed, and multiple module frameworks and aluminium sheet are locked.

10. soft package battery module used for electric vehicle according to claim 9, it is characterised in that：The upper end of the aluminium sheet sets There is opening, in the opening, be provided with collets.