CN214099752U - Soft-package battery cell battery module - Google Patents

Abstract

The utility model aims to provide a soft package battery cell module which can avoid expansion, has good heat dissipation and is easy to assemble; the technical means is characterized in that: the soft-package battery cell module comprises a battery assembly, a fan assembly and a cover plate assembly; the battery component comprises an electric core component and a conductive sheet group; the cell assembly is stacked and pressed, and is provided with a plastic frame body, a heat dissipation sheet body, a soft-packaged cell and an insulating heat conduction sheet body, wherein the plastic frame body is hollow and is provided with an air duct hole and a buckling part, the heat dissipation sheet body is formed in the plastic frame body in an injection-coated mode and is provided with through holes and heat dissipation fins, the soft-packaged cell body is located on one side of the plastic frame body and is provided with a tab, and the insulating heat conduction sheet body is arranged on the heat dissipation sheet body and is in contact with the soft-packaged cell; the conducting plate group is arranged at the buckling part; the fan component is provided with a first cover plate, an air guide cover and a fan which are sequentially arranged on one side of the battery component, and the first cover plate is provided with a first air guide hole and a first buckling part; the cover plate component is provided with a second cover plate which is provided with a second air guide hole and a second buckling part.

Description

Soft-package battery cell battery module

Technical Field

The utility model relates to a modular battery structure that cooperation laminate polymer core was used indicates a laminate polymer core battery module especially.

Background

The single energy density of the soft-package battery cell is improved in the three common lithium battery packaging methods, but the consideration of the overall safety of the product is most important when the module planning layer is reached.

Present traditional laminate polymer core battery module, some advantages are small, and the equipment cost is low, but the problem lies in that the heat planning is not enough, and the heat dissipation is bad, leads to cycle life to hang down on the low side, and some advantages have taken into account the heat dissipation and have compeled tight design with electric core, have prolonged the high C Rate cycle life of electric core, but the equipment process can become complicated, and is with high costs, and the fin is exposed, has the worry of electric core bonding short circuit.

In view of the above, the present invention provides a flexible package battery module capable of solving the above problems, and it is an object of the present invention to improve the flexible package battery module.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can avoid inflation, the heat dissipation good, assemble easy laminate polymer core battery module.

In order to solve the above problems and achieve the purpose of the present invention, the technical means of the present invention is to provide a battery module with a soft package core, which is characterized in that: the soft package battery cell module comprises a battery assembly, a fan assembly and a cover plate assembly; the battery component comprises a plurality of battery core components and a conductive sheet group; the battery pack assembly is stacked and pressed in a clamped manner, and is provided with a plastic frame body, a heat dissipation sheet body, at least one soft package battery cell and two insulating heat conduction sheet bodies, wherein the plastic frame body is arranged in a hollow manner, two vertical edges and bottom edges are arranged at intervals, a plurality of air duct holes are distributed at intervals, a clamping part which can be used for positioning the battery cell group is concavely arranged at the top edge, the heat dissipation sheet body is formed in the plastic frame body in an injection manner, the edge of the heat dissipation sheet body corresponds to each air duct hole, a plurality of through holes and at least one heat dissipation fin which is arranged corresponding to the through holes are distributed, the soft package battery cell is positioned at one side of the plastic frame body and is close to the heat dissipation sheet body, the top end of the soft package battery cell is provided with two polar lugs which can penetrate out the corresponding battery cell group and bend into the corresponding clamping part, and the insulating heat conduction sheet bodies are correspondingly arranged on two vertical side surfaces of the heat dissipation sheet body, and is contacted with the adjacent soft package battery cell; the conducting sheet group is arranged at the buckling part and can supply power to connect the electric core assembly so as to lead out and lead in electric power; the fan assembly is provided with a first cover plate, an air guide cover and a fan, the first cover plate is arranged on one side of the battery assembly and clamped with the battery assembly, two vertical edges and a bottom edge of the first cover plate correspond to the air duct hole, at least one first air guide hole is correspondingly arranged, a first clamping part for positioning the conducting sheet set is also concavely arranged on the top edge, the air guide cover is arranged on the other side of the first cover plate, one end of the air guide cover covers the first cover plate, and the fan is arranged at the other end of the air guide cover; the cover plate component is provided with a second cover plate, the second cover plate is arranged on the other side of the battery component and clamped with the battery component, the two vertical edges and the bottom edge correspond to the air duct hole, at least one second air guide hole is correspondingly arranged, and the top edge is also concavely provided with a second clamping part for positioning the conducting strip group.

More specifically, the buckling portion, the first buckling portion and the second buckling portion all include two groove portions, two barbs and two horizontal blocking walls, the groove portions are arranged side by side, the barb surfaces are arranged towards the inner side and are respectively arranged at one side end of the groove portions which are far away from each other, the horizontal blocking walls are arranged back to back and are respectively arranged at one side end of the groove portions which are close to each other, and the cross section of the horizontal blocking walls is in an inverted triangle shape.

More specifically, the edges of two side faces of the hollow part of the plastic frame body, the first cover plate and the second cover plate are respectively provided with a first positioning sheet, a first groove, an L-shaped positioning sheet, an L-shaped groove, a second positioning sheet and a second groove which are mirror images and can be used for clamping; the first positioning sheet is arranged at the top end of one side edge and can be matched with the second groove of one of the adjacent plastic frame body, the first cover plate and the second cover plate; the first groove is arranged at the bottom end of the first positioning sheet and can be matched with the second positioning sheet corresponding to one of the adjacent plastic frame body, the first cover plate and the second cover plate; the L-shaped positioning piece is arranged at the bottom end of the first groove and can be matched with the L-shaped groove corresponding to one of the adjacent plastic frame body, the first cover plate and the second cover plate; the L-shaped groove is arranged on the other side of the L-shaped positioning piece and can be matched with the L-shaped positioning piece corresponding to one of the adjacent plastic frame body, the first cover plate and the second cover plate; the second positioning piece is arranged at the top end of the L-shaped groove and can be matched with the first groove corresponding to one of the adjacent plastic frame body, the first cover plate and the second cover plate; the second groove is formed in the top end of the second positioning piece and can be matched with the first positioning piece corresponding to one of the adjacent plastic frame body, the first cover plate and the second cover plate.

More specifically, the conducting strip group further comprises at least one first L-shaped conducting strip, at least one connecting conducting strip and at least one second L-shaped conducting strip, the first L-shaped conducting strip is arranged on one side end of the first cover plate and the corresponding side end of the battery assembly and is electrically connected with the battery assembly, the connecting conducting strip is arranged on the battery assembly and can be used for electrically connecting the battery core assemblies, and the L-shaped conducting strip is spanned on one side end of the second cover plate and the corresponding side end of the battery assembly and is electrically connected with the battery assembly; the first L-shaped conducting plate, the connecting conducting plate and the second L-shaped conducting plate are all provided with at least one through hole which can correspond to the electric core component, and the through holes can be used for the corresponding lugs to penetrate out.

More specifically, the insulating heat-conducting sheet body also occupies 80% of the area of the vertical side face of the heat-radiating sheet body correspondingly arranged; the heat dissipation sheet body is also a heat dissipation aluminum alloy sheet body; the insulating heat-conducting sheet body is also a heat-conducting silica gel sheet body.

More specifically, the plastic frame, again made of engineering plastic, is also UL 94V-0 in flame resistance rating.

Compared with the prior art, the utility model discloses an effect as follows:

the first point is as follows: the utility model discloses soft-packaged electrical core battery module, battery pack can the storehouse compress tightly, effectively avoids the cooperation of inflation, plastics framework, heat dissipation lamellar body and insulating heat conduction lamellar body, provides good heat dissipation condition to soft-packaged electrical core can also obtain effectively insulating, and holistic cyclic life can obtain the extension, and above all, the adjustment voltage and the capacity of can being convenient for are designed to the modularization.

And a second point: the fan assembly and the cover plate assembly are matched and used, heat is dissipated by air cooling, and the purposes of considering the stack clamping application of the cell assemblies and the insulation of the cells and effectively dissipating heat of the soft package cells are achieved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective exploded view of the present invention.

Fig. 3 is an exploded view of the electric core assembly of the present invention.

Fig. 4 is another exploded view of the electric core assembly of the present invention.

Fig. 5 is an enlarged view of section ii in fig. 3.

Fig. 6 is an enlarged schematic view of part iii of fig. 3.

Fig. 7 is a schematic perspective sectional view of the battery cell assembly of the present invention engaged with another battery cell assembly.

Fig. 8 is a front view of the battery cell fixing base of the present invention.

Fig. 9 is a front view of the battery cell holder cooperating with the heat sink.

Fig. 10 is a schematic perspective view of the present invention.

FIG. 11 is a schematic view of an embodiment of the I-I surface of FIG. 1.

Fig. 12 is a schematic perspective view of the present invention when the electric core assembly is expanded.

Description of reference numerals:

1 first groove of battery assembly 20

11 electric core subassembly 30L shape spacer

12 conducting strip group 40L-shaped groove

121 first L-shaped conductive sheet 50 second positioning sheet

122 connecting the second groove of the conducting strip 60

123 second L-shaped conducting strip a groove part

124 piercing b barb

2 fan assembly c horizontal retaining wall

21 first cover plate A plastic frame

211 first air guiding hole A1 air duct hole

212 first catch A2 catch

22 wind scooper B heat dissipation sheet body

23 Fan B1 through hole

3 cover plate component B2 radiating fin

31 second cover plate C soft package battery cell

311 second air guiding hole C1 tab

312 second fastening part D insulation heat-conducting sheet body

10 first positioning sheet 100 soft package battery cell battery module

Detailed Description

As shown in fig. 1 to 6, a soft-package-cell battery module is disclosed, wherein the soft-package-cell battery module 100 includes a battery assembly 1, a fan assembly 2, and a cover plate assembly 3; the battery assembly 1 comprises a plurality of battery assembly components 11 and a conducting strip group 12; and the said electric core assembly 11, its stack each other is compressed the joint, and have a plastic frame A, a heat-dissipating sheet body B, a soft-packaged electrical core C and two insulating heat-conducting sheet bodies D at least, the said plastic frame A is the hollow setting, two vertical and bottom edges, several wind channel holes A1 have been laid at the interval, and the concave buckle part A2 that can supply to fix a position the said conducting strip group 12 uses of top edge, the said heat-dissipating sheet body B package is injected and shaped in the said plastic frame A, and the edge is correspondent to each the said wind channel hole A1 department, lay several through-holes B1 and at least a heat-dissipating fin B2 that is correspondent to the said through-hole B1 and set up, the said soft-packaged electrical core C is positioned in the said plastic frame A one side, and paste in the said heat-dissipating sheet body B, the top is equipped with and can wear out the corresponding said conducting strip group 12, and bend into the two poles of the ears C1 of the said buckle part A2 corresponding, the said insulating heat-conducting sheet body D is set up correspondingly on two vertical sides of the said heat-dissipating sheet body B, and is contacted with the adjacent soft package battery cell C; the conducting strip group 12 is arranged at the buckling part A2 and can supply power to the electric core assembly 11 for leading out and leading in power; the fan assembly 2 is provided with a first cover plate 21, an air guiding cover 22 and a fan 23, the first cover plate 21 is arranged on one side of the battery assembly 1 and clamped with the battery assembly, two vertical edges and a bottom edge correspond to the air duct hole A1, at least one first air guiding hole 211 is correspondingly arranged, a first clamping part 212 for positioning the conducting sheet group 12 is also concavely arranged on the top edge, the air guiding cover 22 is arranged on the other side of the first cover plate 21, one end covers the first cover plate 21, and the fan 23 is arranged at the other end of the air guiding cover 22; the cover plate assembly 3 has a second cover plate 31, the second cover plate 31 is disposed on the other side of the battery assembly 1 and clamped thereto, and two vertical and bottom edges corresponding to the air duct hole a1 are respectively provided with at least one second air guiding hole 311, and the top edge is also concavely provided with a second fastening portion 312 for positioning the conducting strip group 12.

Wherein, through battery pack 1, fan unit 2 and apron subassembly 3's cooperation, constitute the utility model discloses laminate polymer core battery module 100, battery pack 1's electric core subassembly 11 can the storehouse each other and compress tightly to effectively avoid the inflation, fan unit 2 and apron subassembly 3 use, let the utility model discloses laminate polymer core battery module 100 can adopt the air cooling side to dispel the heat.

Secondly, modular electric core subassembly 11 can freely increase or reduce according to needs, reaches the effect of adjustment battery pack 1 voltage and capacity, and the overall space rate of utilization is high.

Furthermore, plastics framework A, the cooperation of heat dissipation lamellar body B and insulating heat conduction lamellar body D, soft-packaged electrical core C can be effectively fixed a position by plastics framework A, avoid the equipment to slide, prevent in the equipment process, produce the slide position because of losing, let soft-packaged electrical core C be damaged, improve holistic security, if soft-packaged electrical core C is damaged, still can cause the inside short circuit of soft-packaged electrical core C and make the conflagration when serious, heat dissipation lamellar body B and insulating heat conduction lamellar body D, cooperation plastics framework A's wind channel hole A1, provide good radiating condition, and obtain insulating effectively, make soft-packaged electrical core C's cycle life can obtain the extension.

In addition, the radiating sheet body B is matched with the plastic frame body A in an injection molding mode, so that the assembling and positioning can be facilitated, and the production difficulty is reduced.

Furthermore, the conductive sheet set 12 is used in cooperation with the fastening portion a2, the first fastening portion 212 and the second fastening portion 312, so that the installation and adjustment are facilitated, the reduction of the production man-hour is reduced, and the auxiliary heat dissipation effect can be achieved while the conductive sheet set is conductive.

Referring to fig. 3 to 6, the fastening portion a2, the first fastening portion 212 and the second fastening portion 312 all further include two groove portions a, two barbs b and two horizontal blocking walls c, the groove portions a are arranged side by side, the barbs b face inward and are respectively disposed at a side end of the groove portions a away from each other, the horizontal blocking walls c are back-to-back and are respectively disposed at a side end of the groove portions a close to each other, and the cross section is inverted triangle.

The conducting sheet group 12 is accommodated through the groove portion a, the conducting sheet group 12 can be positioned by the horizontal blocking wall c, and the conducting sheet group 12 can be buckled by the barb b, so that the fixing and the dismounting can be facilitated.

Secondly, the design of the fastening portion a2, the first fastening portion 212 and the second fastening portion 312, through the two sets of the groove portions a, the barbs b and the horizontal blocking walls c, can facilitate the installation of the conductive sheet set 12, reduce the assembly difficulty and the working hours, and effectively control the cost.

Referring to fig. 3 to 7, the plastic frame a, the first cover plate 21 and the second cover plate 31 are further provided with a first positioning piece 10, a first groove 20, an L-shaped positioning piece 30, an L-shaped groove 40, a second positioning piece 50 and a second groove 60, which are mirror images and are used for clamping, at the edges of two side surfaces of the hollow portion of the plastic frame a, the first cover plate 21 and the second cover plate 31; the first positioning piece 10 is arranged at the top end of one side edge and can be matched with the second groove 60 of one of the adjacent plastic frame body a, the first cover plate 21 and the second cover plate 31; the first groove 20 is disposed at the bottom end of the first positioning piece 10, and can be matched with the second positioning piece 50 corresponding to one of the adjacent plastic frame body a, the first cover plate 21 and the second cover plate 31; the L-shaped positioning plate 30 is disposed at the bottom end of the first groove 20, and can be matched with the L-shaped groove 40 corresponding to one of the adjacent plastic frame a, the first cover plate 21 and the second cover plate 31; the L-shaped groove 40 is disposed on the other side of the L-shaped positioning piece 30, and can be matched with the L-shaped positioning piece 30 corresponding to one of the adjacent plastic frame body a, the first cover plate 21 and the second cover plate 31; the second positioning piece 50 is arranged at the top end of the L-shaped groove 40 and can be matched with the first groove 20 corresponding to one of the adjacent plastic frame body a, the first cover plate 21 and the second cover plate 31; the second groove 60 is disposed at the top end of the second positioning piece 50, and can be matched with the first positioning piece 10 corresponding to one of the adjacent plastic frame body a, the first cover plate 21 and the second cover plate 31.

Wherein, plastics framework A, first apron 21 and second apron 31, through first spacer 10, first recess 20, L shape spacer 30, L shape recess 40, the application of second spacer 50 and second recess 60, let between electric core subassembly 11 and the electric core subassembly 11, between first apron 21 and the electric core subassembly 11, between second apron 31 and the electric core subassembly 11, can both stabilize the equipment connection, can prevent the assembling-process, artificially dredge, produce the slide position with soft-packaged electric core C, cause soft-packaged electric core C to be pressed from both sides the damage, the equipment degree of difficulty effectively improves with the security performance.

Secondly, the design of first spacer 10, first recess 20, L shape spacer 30, L shape recess 40, second spacer 50 and second recess 60 can all obtain effective location effect in X axle, Y axle, three axial directions of Z axle, and can also reach one and prevent slow-witted effect, avoid the equipment mistake.

Referring to fig. 1, fig. 2, fig. 11 and fig. 12, the conductive sheet group 12 further includes at least one first L-shaped conductive sheet 121, at least one connecting conductive sheet 122 and at least one second L-shaped conductive sheet 123, the first L-shaped conductive sheet 121 is disposed on one side end of the first cover plate 21 and the corresponding side end of the battery assembly 1, and is electrically connected to the battery assembly 1, the connecting conductive sheet 122 is disposed on the battery assembly 1, and is capable of electrically connecting the battery assemblies 11 to each other, and the L-shaped conductive sheet 123 spans one side end of the second cover plate 31 and the corresponding side end of the battery assembly 1, and is electrically connected to the battery assembly 1; the first L-shaped conductive sheet 121, the connecting conductive sheet 122 and the second L-shaped conductive sheet 123 are all provided with at least one through hole 124 corresponding to the electric core assembly 11, and the through hole 124 can be used for the corresponding tab C1 to pass through.

Wherein, the application of the first L-shaped conductive sheet 121, the connecting conductive sheet 122 and the second L-shaped conductive sheet 123 improves the laser welding construction yield of the tab C1 when the electric core assembly 11 is connected in series and in parallel, reduces the welding low impedance and the heat source,

secondly, the design of perforation 124 can facilitate the location of tab C1, and can also assist in confirming whether core assembly 11 is correctly installed and connected.

Moreover, the conductive sheet set 12 is a metal product, and can conduct electricity and also can be used as a supplement for heat dissipation to avoid overheating.

On the other hand, although not shown in the drawings, the larger the number of parallel connection of the electric core assemblies 11, the more the length of the connecting conductive sheet 122 and the number of the through holes 124 can be adjusted, which is very convenient.

In the above, the insulating heat-conducting sheet body D also occupies 80% of the area of the vertical side surface of the heat-dissipating sheet body B; the heat dissipation sheet body B is also a heat dissipation aluminum alloy sheet body; the insulating heat-conducting sheet body D is also a heat-conducting silica gel sheet body.

Wherein, through the insulating heat conduction lamellar body D of large tracts of land setting, can have maximize contact soft package electricity core C, let the heat can be derived smoothly.

Secondly, the application of the heat dissipation aluminum alloy sheet body can provide the heat dissipation sheet body B with better strength at lower cost, and the application of the heat conduction silica gel sheet body is that the material is softer, the compression performance is good, the heat conduction insulating performance is good, the adjustable range of the thickness is larger, the gap of the contact surface can be filled well, the two surfaces have natural viscosity, the operability and the maintainability are strong, and the thermal contact resistance generated between the heat source surface and the contact surface of the heat dissipation device is effectively reduced by the insulation heat conduction sheet body D.

In the above, the plastic frame body a is made of engineering plastic, and the flame-retardant rating is also UL 94V-0.

Wherein, through engineering plastics's application, the implementation of UL 94V-0 resistant fire grade in the cooperation can be ensured the utility model discloses laminate polymer core battery module 100 security in using, when strengthening the radiating to compromise the optimization of cost and equipment process.

As shown in fig. 10 and fig. 11, the soft package battery module 100 of the present invention utilizes the stack of the core assembly 11 to press the clamped core assembly, the air channel formed by the air channel hole a1, the fan 23 sucks air into the wind scooper 22, and is blocked by the first cover plate 21 and the second cover plate 31, and because the first wind guiding hole 211, the wind channel hole a1, and the second wind guiding hole 311 are mutually corresponding and communicated, the first cover plate 21, the core assembly 11, and the second cover plate 31 are also clamped to each other, which can cause the air channel sealing effect, so that a plurality of air channels are formed, and thus, air can be sucked into the wind scooper 22 from the second wind guiding hole 311, the wind channel hole a1, and the first wind guiding hole 211, and sucked out by the fan 23, and in the process, can flow through the heat dissipation sheet body B of each sheet assembly 11, so that the heat of the soft package battery C is transferred to the heat dissipation sheet body B through the insulating heat conduction sheet body D, and is transferred from the heat dissipation fin B2 at the through hole B1, the air is cooled to reduce the temperature, thereby achieving the effect of effective heat dissipation.

Although not shown in the drawings, the fan 23 can be rotated reversely according to the application requirement, so that the fan 23 blows air into the air guiding cover 22, and the air is blown from the air guiding cover 22 to the first air guiding holes 211, passes through the air passage holes a1, and is blown out from the second air guiding holes 311, thereby forming another effective heat dissipation manner.

As shown in fig. 12, the flexible-package-cell battery module 100 of the present invention, as a result of modularization, can easily achieve the effect of expanding or changing the voltage and capacity of the battery assembly 1 by increasing or decreasing the number of the cell assemblies 11 [ not shown in the figure ] in cooperation with the conductive sheet group 12, and has good industrial applicability.

Although the present invention has been described in detail by way of examples as described above, the present invention is not limited to these embodiments. It should be understood and appreciated by those of ordinary skill in the art to which this disclosure pertains: various changes and modifications can be made without departing from the spirit and scope of the present disclosure; for example, the technical contents exemplified in the above embodiments are combined or changed to new embodiments, and such embodiments are also regarded as the subject of the present disclosure. Accordingly, the protection sought herein includes the claims set forth below and any claims that fall within the scope of the claims.

Claims (6)

1. The utility model provides a laminate polymer battery cell battery module which characterized in that:

the soft package battery cell module (100) comprises a battery component (1), a fan component (2) and a cover plate component (3);

the battery assembly (1) comprises a plurality of battery assembly parts (11) and a conductive sheet group (12);

the battery pack (11), its stack sticiss the joint each other, and has a plastics framework (A), a heat dissipation lamellar body (B), an at least soft packet of electricity core (C) and two insulating heat conduction lamellar body (D), plastics framework (A) is the setting of cavity form, and two perpendicular and bottom edge have laid several wind channel hole (A1) at the interval, and the concave buckle portion (A2) that can supply the location of topside reason group (12) usefulness, heat dissipation lamellar body (B) package shoot type in plastics framework (A), and the edge is corresponding to each wind channel hole (A1) department has laid several through-hole (B1) and is corresponding to through-hole (B1) and at least a heat radiation fin (B2) that set up, soft packet of electricity core (C) is located plastics framework (A) one side, and be close to heat dissipation lamellar body (B), the top be equipped with can wear out correspondingly conductive lamellar group (12), The heat dissipation sheet body (B) is provided with a buckling part (A2), and is bent into two tabs (C1) at the corresponding buckling part (A2), and the insulating heat conduction sheet body (D) is correspondingly arranged on two vertical side surfaces of the heat dissipation sheet body (B) and is contacted with the adjacent soft package battery cell (C);

the conducting sheet group (12) is arranged at the buckling part (A2) and can supply power to the electric core assembly (11) for leading out and leading in power;

the fan assembly (2) is provided with a first cover plate (21), an air guide cover (22) and a fan (23), the first cover plate (21) is arranged on one side of the battery assembly (1) and clamped with the battery assembly, two vertical edges and bottom edges of the first cover plate correspond to the air duct hole (A1), at least one first air guide hole (211) is correspondingly arranged, a first buckling part (212) for positioning the conducting strip group (12) is also concavely arranged on the top edge of the first cover plate, the air guide cover (22) is arranged on the other side of the first cover plate (21), one end of the air guide cover covers the first cover plate (21), and the fan (23) is arranged at the other end of the air guide cover (22);

the cover plate component (3) is provided with a second cover plate (31), the second cover plate (31) is arranged on the other side of the battery component (1) and is clamped with the battery component, the two vertical parts and the bottom edge of the second cover plate are corresponding to the air duct hole (A1), at least one second air guide hole (311) is correspondingly arranged, and a second buckling part (312) capable of positioning the conducting sheet group (12) is concavely arranged on the top edge.

2. The pouch cell battery module of claim 1, wherein: buckling part (A2), first buckling part (212) and second buckling part (312), its three all still including two concave part (a), two barb (b) and two levels keep off wall (c), concave part (a) is and sets up side by side form, barb (b) face inboard, locate respectively a lateral part department that concave part (a) kept away from each other, level keeps off wall (c) and is to leaning against the form, locates respectively a lateral part department that concave part (a) pressed close to each other, the section is the triangle-shaped that falls.

3. The pouch cell battery module of claim 2, wherein: the edges of two side faces of the hollow part of the plastic frame body (A), the first cover plate (21) and the second cover plate (31) are respectively provided with a first positioning sheet (10), a first groove (20), an L-shaped positioning sheet (30), an L-shaped groove (40), a second positioning sheet (50) and a second groove (60) which are arranged in a mirror image manner and can be used for clamping;

the first positioning sheet (10) is arranged at the top end of one side edge and can be matched with the second groove (60) of one of the adjacent plastic frame body (A), the first cover plate (21) and the second cover plate (31);

the first groove (20) is arranged at the bottom end of the first positioning sheet (10) and can be matched with the second positioning sheet (50) corresponding to one of the adjacent plastic frame body (A), the first cover plate (21) and the second cover plate (31);

the L-shaped positioning piece (30) is arranged at the bottom end of the first groove (20) and can be matched with the L-shaped groove (40) corresponding to one of the adjacent plastic frame body (A), the first cover plate (21) and the second cover plate (31);

the L-shaped groove (40) is arranged on the other side of the L-shaped positioning piece (30) and can be matched with the L-shaped positioning piece (30) corresponding to one of the adjacent plastic frame body (A), the first cover plate (21) and the second cover plate (31);

the second positioning piece (50) is arranged at the top end of the L-shaped groove (40) and can be matched with the first groove (20) corresponding to one of the adjacent plastic frame body (A), the first cover plate (21) and the second cover plate (31);

the second groove (60) is arranged at the top end of the second positioning sheet (50) and can be matched with the first positioning sheet (10) corresponding to one of the adjacent plastic frame body (A), the first cover plate (21) and the second cover plate (31).

4. The pouch cell battery module of claim 3, wherein: the conductive sheet group (12) further comprises at least one first L-shaped conductive sheet (121), at least one connecting conductive sheet (122) and at least one second L-shaped conductive sheet (123), the first L-shaped conductive sheet (121) is arranged on one side end of the first cover plate (21) and the corresponding side end of the battery assembly (1) and is electrically connected with the battery assembly (1), the connecting conductive sheet (122) is arranged on the battery assembly (1) and can be used for electrically connecting the battery assemblies (11) with each other, and the L-shaped conductive sheet (123) is spanned on one side end of the second cover plate (31) and the corresponding side end of the battery assembly (1) and is electrically connected with the battery assembly (1);

the first L-shaped conducting strip (121), the connecting conducting strip (122) and the second L-shaped conducting strip (123) are all provided with at least one through hole (124) which can correspond to the electric core assembly (11), and the through hole (124) can be used for enabling the corresponding tab (C1) to penetrate out.

5. The pouch cell battery module of claim 4, wherein: the insulating heat-conducting sheet body (D) also occupies 80% of the area of the vertical side face of the corresponding heat-radiating sheet body (B);

the heat dissipation sheet body (B) is a heat dissipation aluminum alloy sheet body;

the insulating heat-conducting sheet body (D) is a heat-conducting silica gel sheet body.

6. The pouch cell battery module of claim 5, wherein: the plastic frame body (A) is made of engineering plastics, and the flame-retardant rating is also UL 94V-0.

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