Battery module and battery system

Abstract

The utility model discloses a battery module and a battery system. The battery module comprises a battery module main body, the battery module main body comprises a plurality of battery cells; supporting end plates are respectively arranged on the left and right sides of the battery module main body; an insulating end plate is arranged between each supporting end plate and the battery module main body; a packing belt is sleeved on the peripheral side surface of an integral structure consisting of the battery module main body and the two supporting end plates in a surrounding manner; a cell connecting assembly is arranged at the top of the battery module main body; two electrode welding columns are arranged at the top of each battery cell; the plurality of battery cells are connected in series through the battery cell connecting assembly; two high-voltage leading-out supports are arranged at the top of the supporting end plate on the right side; and the two high-voltage lead-out supports are respectively connected with two output aluminum bars in the battery cell connecting assembly. According to the utility model, a plurality of battery cells can be safely and reliably connected together, the connection strength and the connection reliability are ensured, and the anti-vibration performance of the battery module is improved. And meanwhile, the space utilization rate of the battery module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery module and a battery system. Background Art

[0002] With the development of the lithium battery industry, lithium batteries are widely used not only in the vehicle field but also in other fields such as AGV (Automated Guided Vehicle), forklifts, and energy storage.

[0003] To meet customer requirements, multiple battery cells (such as square battery cells) need to be connected together (in series and parallel) to form a battery module.

[0004] However, in the existing battery modules, the connection structure between multiple battery cells is relatively weak, the connection is not firm enough, and the anti-vibration performance is poor, which affects the overall service life of the battery module.

[0005] In addition, the structure design of the existing conventional battery modules is unreasonable, the space utilization rate is low, and the grouping efficiency is low. Due to the space size limitations of battery installations in various industries, it is often difficult for the space utilization rate of conventional battery modules to meet customer requirements.

[0006] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a battery module and a battery system in view of the technical defects existing in the prior art.

[0008] To this end, the utility model provides a battery module, which includes a battery module main body;

[0009] The battery module main body includes a plurality of battery cells arranged longitudinally in parallel;

[0010] On the left and right sides of the battery module main body, a support end plate is respectively arranged;

[0011] An insulating end plate is respectively arranged between each support end plate and the battery module main body;

[0012] A rectangular packing belt is sleeved around the four side surfaces of the overall structure composed of the battery module main body and the two support end plates;

[0013] On the top of the battery module main body, a battery cell connection component is arranged;

[0014] Two electrode welding posts are arranged on the top of each battery cell;

[0015] The plurality of battery cells are connected in series through the battery cell connection component;

[0016] On the top of the supporting end plate on the right side, there are two high-voltage lead-out supports distributed at intervals before and after.

[0017] The two high-voltage lead-out supports are respectively connected to the two output aluminum buses in the cell connection assembly.

[0018] In addition, the present utility model also provides a battery system, including the battery module as described above.

[0019] As can be seen from the technical solutions provided by the present utility model above, compared with the prior art, the present utility model provides a battery module and a battery system, the structural design of which is scientific, which can safely and reliably connect a plurality of cells together, ensure the connection strength and the reliability of the connection, is beneficial to improving the anti-vibration performance of the battery module, and prolonging the overall service life of the battery module, and has great practical significance.

[0020] By applying the present utility model, it is beneficial to improve the space utilization rate of the battery module, ensure the grouping efficiency, and better meet the assembly requirements of customers in a limited installation space. Description of the Drawings

[0021] Figure 1 It is a three-dimensional structure schematic diagram of a battery module provided by the present utility model;

[0022] Figure 2 It is a three-dimensional structure schematic diagram of a battery module provided by the present utility model, with the cell connection (CCS) assembly installed on its upper part;

[0023] Figure 3 It is a three-dimensional structure schematic diagram of a battery module provided by the present utility model, with the remaining components except the cell connection (CCS) assembly installed on its upper part;

[0024] Figure 4 It is a three-dimensional exploded structure schematic diagram of a battery module provided by the present utility model. Detailed Embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more unless otherwise clearly and specifically defined.

[0029] See Figures 1 to 4 , the present utility model provides a battery module, which includes a battery module main body;

[0030] The battery module main body includes a plurality of longitudinally arranged in parallel battery cells 2;

[0031] On the left and right sides of the battery module main body, a support end plate 1 is respectively arranged;

[0032] Between each support end plate 1 and the battery module main body, an insulating end plate 6 is respectively arranged;

[0033] Around the four side surfaces of the overall structure composed of the battery module main body and the two support end plates 1, a rectangular packing belt 3 (specifically a steel belt) is sleeved;

[0034] On the top of the battery module main body, a cell connection (CCS) component 4 is arranged;

[0035] On the top of each battery cell 2, two electrode welding posts 201 are arranged (specifically including a positive electrode welding post and a negative electrode welding post);

[0036] It should be noted that the positive welding posts and negative welding posts at the top of the battery cell 2 are used for series connection welding of the series rows.

[0037] Multiple battery cells 2 are connected in series through a cell connection (CCS) component 4;

[0038] On the top of the right support end plate 1, two high-voltage lead-out supports 5 are arranged at intervals in the front and back;

[0039] The two high-voltage lead-out supports 5 are respectively connected to two output aluminum buses 402 in the cell connection (CCS) component 4.

[0040] In the present utility model, specifically, around the four sides of the overall structure composed of the battery module main body and the two support end plates 1, one strapping band 3 is sleeved at the upper and lower ends respectively.

[0041] In the present utility model, specifically, the high-voltage lead-out support 5 is an insulating plastic part, and two nuts are embedded inside it;

[0042] The two nuts are used for threadedly fixing and connecting to two output aluminum buses 402 in the cell connection (CCS) component 4 through bolts.

[0043] Specifically, at the positions corresponding to each nut on the output aluminum bus 402, an output aluminum bus round hole 4022 is respectively arranged;

[0044] After the bolt passes through the output aluminum bus round hole 4022 on the output aluminum bus 402, it is threadedly fixed and connected to the nut.

[0045] In the present utility model, specifically, two insulating end plates 6 are respectively pasted on one side of the two support end plates 1 opposite to each other.

[0046] Furthermore, at the lower parts of the two insulating end plates 6 on the opposite sides, bent edges distributed horizontally are respectively arranged;

[0047] On the bent edges, three insulating end plate positioning round holes 601 are arranged at equal intervals from front to back;

[0048] The insulating end plate positioning round holes 601 are arranged corresponding to the through holes 103 in the support end plate 1.

[0049] It should be noted that the insulating end plate positioning round holes 601 are used to match with the through holes 103 in the support end plate 1 for positioning. The insulating end plate 6 has single-sided adhesive, and it is pasted on the support end plate 1 for insulation.

[0050] In the present utility model, specifically, the battery module main body includes two cell combinations distributed front and back;

[0051] Each battery cell combination is horizontally distributed and includes multiple battery cells 2 arranged longitudinally in parallel;

[0052] In the longitudinal gap between two battery cell combinations, there is a horizontally distributed insulating plate 8 between battery cells;

[0053] Specifically, the two battery cell combinations include the same number of battery cells 2;

[0054] The top and bottom surfaces of the multiple battery cells 2 in each battery cell combination are respectively on the same horizontal plane.

[0055] Specifically, the horizontal length of the insulating plate 8 between battery cells is equal to the horizontal length of each battery cell combination;

[0056] The vertical height of the insulating plate 8 between battery cells is equal to the vertical height of each battery cell combination;

[0057] Specifically, the two battery cell combinations are symmetrically distributed front and back.

[0058] Specifically, for each battery cell combination, between any two adjacent battery cells 2, there is a buffer foam block 7 arranged;

[0059] Further, for each battery cell combination, between any two adjacent battery cells 2, there are two longitudinally distributed buffer foam blocks 7 arranged, and the two buffer foam blocks 7 are arranged in parallel and symmetrically distributed up and down.

[0060] Further, the buffer foam block 7 is adhesively bonded to the adjacent battery cell 2.

[0061] It should be noted that the buffer foam block 7 is single-sided adhesive, used for pasting on the battery cell 2, for playing a buffering role and absorbing the thickness tolerance of the battery cell;

[0062] The insulating PC 8 between battery cells is placed between two rows of battery cells 2 for insulation;

[0063] Further, the buffer foam block 7 is specifically a buffer block made of PU foam (polyurethane foam).

[0064] In the present utility model, on the front and back sides of the support end plate 1, there are respectively provided with a plurality of threaded holes 101, for fixedly connecting external heating or liquid cooling components (such as a heating plate or a liquid cooling plate) through screws;

[0065] Further, on the front and back sides of the support end plate 1, there are respectively provided with four threaded holes 101 with a nominal diameter of M5.

[0066] Specifically, on the opposite sides of the two support end plates 1, there are respectively provided with two first reinforcing beams 102 distributed vertically;

[0067] The two first reinforcing beams 102 are symmetrically distributed front and back.

[0068] It should be noted that at the center positions of the front and rear ends of the support end plate 1, two first reinforcing beams 102 are symmetrically arranged to strengthen the strength of the support end plate.

[0069] Furthermore, at the longitudinal middle part of the first reinforcing beam 102, a reinforcing beam notch 1021 is provided for connecting with the sling of an external hoisting device to realize the hoisting and positioning of the entire battery module;

[0070] Specifically, the support end plate 1 is provided with three through holes 103 distributed at equal intervals from front to back;

[0071] Each through hole 103 vertically penetrates the support end plate 1.

[0072] It should be noted that the three through holes 103 are used for module fixation, for example, by screwing with the threaded holes reserved on the external battery module placement platform through fastening bolts.

[0073] Specifically, at the upper and lower ends of the support end plate 1, two wire harness tie holes 104 are respectively provided for fixing the sampling wire through tie straps.

[0074] Specifically, at the upper and lower ends of the support end plate 1, four notches 105 are respectively provided;

[0075] The notches 105 are used for placing the high-voltage lead-out support 5.

[0076] Specifically, at the upper and lower ends of the back sides of the two support end plates 1, second reinforcing beams 106 are longitudinally arranged to strengthen the strength of the support end plate.

[0077] Specifically, the support end plate 1 is a sheet metal end plate, and its material is preferably SPCC steel or Q235 steel, which has reliable strength and is beneficial to the safety protection of the battery cells in the battery module.

[0078] In the present utility model, specifically, at the center position of the top of the battery cell 2, a breather valve 202 is provided for relieving pressure inside the battery when the battery undergoes thermal runaway.

[0079] In the present utility model, specifically, the strapping 3 is a steel strip, preferably a steel strip made of stainless steel.

[0080] Specifically, a heat shrinkable film 301 (specifically, heat shrinkable films are provided on both the inner and outer sides) is sleeved on the outer surface of the strapping 3 for achieving insulation and anti-scratch effects.

[0081] In the present utility model, specifically, the insulating end plate 6 is a end plate made of insulating PC (polycarbonate) material. The insulating plate 8 between the battery cells is an insulating plate made of PC (polycarbonate) material.

[0082] In the present utility model, as shown in Figure 2 FIG. 5, the battery cell connection (CCS) assembly 4 includes an insulating carrier plate (such as a polycarbonate PC plate) 401, an output aluminum bar 402, a first series aluminum bar 403, and a second series aluminum bar 404;

[0083] At positions corresponding to the electrode welding posts 201 at the top of each battery cell 2, the insulating carrier plate 401 is respectively provided with a vertically penetrating welding post exposure hole 4013;

[0084] It should be noted that the welding post exposure hole 4013 is a round hole, which is used to match with the positive electrode welding post and the negative electrode welding post for positioning;

[0085] The first series aluminum bar 403 is used to connect the electrode welding posts 201 with different polarities (including a positive electrode welding post and a negative electrode welding post) on any two adjacent battery cells in each battery cell combination in the battery module main body;

[0086] The second series aluminum bar 404 is respectively connected to two battery cell combinations in the battery module main body, and is used to connect two battery cell combinations in the battery module main body in series. For example, a specific connection method in one embodiment is: welding the positive electrode welding post of the leftmost battery cell in the rear battery cell combination to the negative electrode welding post of the leftmost battery cell in the front battery cell combination.

[0087] At the right end of the insulating carrier plate 401, two output aluminum bars 402 are provided;

[0088] After the bottoms of the two output aluminum bars 402 respectively pass through a welding post exposure hole 4013, they are welded to the two electrode welding posts 201 with different polarities (specifically including a positive electrode welding post and a negative electrode welding post) on two battery cells in two battery cell combinations in the battery module main body. For example, a specific connection method in one embodiment is: the negative electrode welding post of the rightmost battery cell in the rear battery cell combination and the positive electrode welding post of the rightmost battery cell in the front battery cell combination are respectively welded and fixed to the bottoms of the two output aluminum bars 402.

[0089] It should be noted that for the battery module, the specific arrangement method and the arrangement order of the battery cells for series connection are conventional well-known technologies in the prior art, and will not be elaborated here.

[0090] Specifically, the material of the output aluminum bar 402 is 1060AL, and its surface is nickel-plated (that is, a layer of nickel is plated on the surface) to reduce the contact resistance.

[0091] In specific implementation, a first positioning round hole 4021 is provided on the output aluminum row 402 for matching and positioning with the electrode welding post 201 to ensure the relative position of welding.

[0092] In specific implementation, two output aluminum row round holes 4022 are provided on the output aluminum row 402 for installing bolts and matching and positioning with the nuts in the high-voltage lead-out support 5; through the bolts, the output aluminum row 402 is fixedly connected to the nuts in the high-voltage lead-out support 5.

[0093] In specific implementation, one second positioning round hole 4031 is respectively provided at both ends of the first series-connected aluminum row 403 for matching and positioning with the electrode welding post 201 to ensure the relative welding position.

[0094] In specific implementation, two first lead-out claws 4032 are provided in the middle of the first series-connected aluminum row 403 for welding sampling wires or temperature sensors (i.e., temperature transducers) to collect information.

[0095] In specific implementation, the materials of the first series-connected aluminum row 403 and the second series-connected aluminum row 404 are 1060AL.

[0096] In specific implementation, two second lead-out claws 4041 are provided in the middle of the second series-connected aluminum row 404 for welding sampling wires or temperature sensors (i.e., temperature transducers) to collect information.

[0097] One third positioning round hole 4042 is respectively provided at both ends of the second series-connected aluminum row 404 for matching and positioning with the electrode welding post 201 to ensure the relative welding position.

[0098] In specific implementation, the top surface of the insulating carrier board 401 is a back-glued surface coated with a layer of adhesive.

[0099] It should be noted that the insulating carrier board 401 is single-sided back-glued for bonding the output aluminum row 402, the first series-connected aluminum row 403, and the second series-connected aluminum row 404. It can not only achieve preliminary positioning during assembly, but also enhance the connection strength and reliability of the output aluminum row 402, the first series-connected aluminum row 403, and the second series-connected aluminum row 404, and enhance the anti-vibration performance of these aluminum rows.

[0100] In specific implementation, one vertically penetrating breather valve exposure hole 4011 is respectively provided at the position of the insulating carrier board 401 corresponding to the breather valve 202 on the top of each battery cell 2.

[0101] It should be noted that the breather valve exposure hole 4011 is an oval hole, and its shape and size correspond to and match the breather valve 202 for matching with the breather valve 202 to avoid blocking the breather valve 202.

[0102] Specifically, a plurality of square holes 4012 are distributed on the insulating carrier board 401 for fixing the sampling wire harness;

[0103] Specifically, a fourth positioning round hole 4014 is distributed on the insulating carrier board 401 for matching and positioning with an existing battery module assembly tool outside, facilitating assembly;

[0104] There is 1 positioning waist-shaped round hole 4015 distributed on the insulating carrier board 401 for matching tool positioning with an existing battery module assembly tool outside, facilitating assembly;

[0105] The positioning waist-shaped round hole 4015 and the fourth positioning round hole 4014 are respectively located at the left and right ends of the insulating carrier board 401.

[0106] To more clearly understand the technical solution of the present invention, the assembly process of the present invention will be described below.

[0107] During installation, first, place the adhesive side of the insulating carrier board 401 upward, and limit it through the fourth positioning round hole 4014 and the positioning waist-shaped round hole 4015 (specifically, it can be limited by two external positioning pins, and the shapes and sizes of the two positioning pins respectively correspond to and match the fourth positioning round hole 4014 and the positioning waist-shaped round hole 4015, and are respectively inserted into the fourth positioning round hole 4014 and the positioning waist-shaped round hole 4015).

[0108] Then, refer to Figure 2 As shown, place the output aluminum row 402, the first series aluminum row 403, and the second series aluminum row 404 in sequence on the adhesive side at the top of the insulating carrier board 401, and the first positioning round hole 4021, the second positioning round hole 4031, and the third positioning round hole 4042 are respectively positioned with the welding post exposed holes 4013 of the insulating carrier board 401.

[0109] Then, the sampling wire harness can be welded on the first lead-out claw 4032 and the second lead-out claw 4041 and fixed through cable ties and the square holes 4012.

[0110] Then, as Figure 3As shown, the insulating end plate 6 is pasted on the supporting end plate 1. The positioning round hole 601 of the insulating end plate is matched with the through hole 103 on the supporting end plate 1 for positioning, and the above components are placed in the tooling and limited by the notch 1021 in the middle of the first reinforcing beam 102. Then, the buffer foam blocks 77 are centrally pasted on the large surface of the battery cell 2, one on the top and one on the bottom. According to the series-parallel requirements, these components are sequentially placed in the tooling. Then, after placement, the above components are extruded to the specified size by the tooling, and then the packing belt 3 is put on. The position of the heat shrinkable film 301 on the packing belt 3 contacts the battery cell 2, and the position without the heat shrinkable film 301 contacts the second reinforcing beam 106 of the sheet metal end plate 1, and the extrusion tooling is released. The high-voltage lead-out support 5 is placed in the notch 105.

[0111] Then, as Figure 4 shown, the Figure 2 assembled components (i.e., the battery cell connection assembly 4) are placed on the Figure 3 assembled components. The first positioning round hole 4021, the second positioning round hole 4031, and the third positioning round hole 4042 are respectively arranged corresponding to the electrode welding posts 201 at the top of the battery cell 2. At this time, the waist-shaped hole (i.e., the air vent valve exposing hole 4011) of the insulating carrier plate 401 is exactly corresponding to the air vent valve 202 at the top of the battery cell 2. Bolts are used to pre-fix through the output aluminum row round hole 4022 on the output aluminum row 402 and the insert (i.e., nut) inside the high-voltage lead-out support 5. At this time, laser welding can be used to fix the output aluminum row 402, the first series-connected aluminum row 403, and the second series-connected aluminum row 404 to the electrode welding posts 201 of multiple battery cells 2 respectively to form a circuit. The sampling main wire can be fixed on the wire harness tie-down hole 104 of the supporting end plate 1;

[0112] Through the above installation and fixation, the utility model can realize a module structure for multiple series connections of battery cells. Compared with the existing module structure, it is beneficial to improve the space utilization rate of the battery module. All square battery cells can adopt this scheme for layout, reducing the mold opening requirements and improving the manufacturability. For the battery module assembly (PACK) requirements in the niche market, it can achieve rapid response.

[0113] It should be noted that currently, conventional modules have parts such as side plates or steel belts in the width direction of the battery cells for limiting. For single-row modules (i.e., modules composed of single-row battery cells), a total of 2 dimensional spaces are occupied on both sides, and a certain installation space still needs to be reserved between two modules. However, the battery module of the present utility model is a single-module double-row battery cell. Just in terms of the layout of 2 rows of battery cells, 2 dimensional spaces and 1 installation gap can be saved. The space utilization rate in the PACK (battery pack, i.e., battery system) can be improved. In addition, for the present utility model, while improving the space utilization rate, the grouping efficiency of the entire battery pack can be indirectly improved. Generally, multiple modules need to be connected in series in the PACK (battery pack). From the perspective of the assembly process, no matter how many modules are placed in the PACK, the number of assembly times of the module of the present utility model is half less than that of the conventional module. Fewer parts are used in the module assembly and PACK packing processes.

[0114] Based on the battery module provided by the above-mentioned present utility model, the present utility model also provides a battery system, including at least one battery module as described above.

[0115] In specific implementation, when the battery system includes multiple battery modules, the multiple battery modules are connected in parallel, in series, or in series-parallel.

[0116] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A battery module, characterized in that: including a battery module body; The battery module body comprises a plurality of battery cells (2) arranged in parallel in a longitudinal direction; A supporting end plate (1) is provided on the left and right sides of the battery module body respectively; An insulating end plate (6) is provided between each supporting end plate (1) and the battery module body; The four sides of the overall structure consisting of the battery module body and the two supporting end plates (1) are surrounded by rectangular packing tapes (3); A battery cell connection assembly (4) is provided on the top of the battery module body; Two electrode welding posts (201) are arranged on the top of each battery cell (2); A plurality of battery cells (2) are connected in series via a battery cell connection assembly (4); Two high-voltage lead-out supports (5) are arranged at intervals in front and behind on the top of the right support end plate (1); The two high-voltage lead-out supports (5) are respectively connected to the two output aluminum bars (402) in the battery cell connection assembly (4).

2. The battery module according to claim 1, characterized in that: Two nuts are embedded inside the high-voltage lead-out support (5); The two nuts are used to be threadedly fixedly connected to two output aluminum bars (402) in the battery cell connection assembly (4) through bolts.

3. The battery module according to claim 2, characterized in that: The output aluminum bar (402) is provided with an output aluminum bar circular hole (4022) at a position corresponding to each nut; After the bolt passes through the output aluminum bar round hole (4022) on the output aluminum bar (402), it is threadedly fixedly connected with the nut.

4. The battery module according to claim 1, characterized in that: Two insulating end plates (6) are respectively adhered to opposite sides of the two supporting end plates (1); The lower parts of the two insulating end plates (6) are respectively provided with horizontally distributed bent edges on opposite sides; On the bent edge, three insulating end plate positioning circular holes (601) are arranged in sequence from front to back and are distributed at equal intervals; The insulating end plate positioning circular hole (601) is arranged correspondingly to the through hole (103) in the supporting end plate (1).

5. The battery module according to claim 1, characterized in that: The battery module body includes two battery cells arranged front and back; Each battery cell combination is distributed transversely and includes a plurality of battery cells (2) arranged longitudinally and in parallel; In the longitudinal gap between the two battery cell assemblies, there is a transversely distributed inter-battery cell insulating plate (8).

6. The battery module according to claim 5, characterized in that: The two battery cell combinations include the same number of battery cells (2); and / or, The top surfaces and bottom surfaces of the plurality of battery cells (2) in each battery cell combination are respectively on the same horizontal plane; and / or, The transverse length of the insulating plate (8) between the battery cells is equal to the transverse length of each battery cell combination; The vertical height of the insulating plate (8) between the battery cells is equal to the vertical height of each battery cell assembly; and / or, For each battery cell combination, two buffer foam blocks (7) are arranged longitudinally between any two adjacent battery cells (2), and the two buffer foam blocks (7) are arranged in parallel and symmetrically distributed up and down; The buffer foam block (7) is bonded to the adjacent battery core (2).

7. The battery module according to claim 1, characterized in that: Two first reinforcement beams (102) distributed vertically are respectively arranged on opposite sides of the two supporting end plates (1); The two first reinforcement beams (102) are symmetrically distributed front and back; and / or, Two wire harness tie holes (104) are respectively provided at the upper and lower ends of the support end plate (1); and / or, Four notches (105) are respectively provided at the upper and lower ends of the supporting end plate (1); The notch (105) is used to place the high voltage lead-out support (5); and / or, The upper and lower ends of the two supporting end plates (1) on opposite sides are respectively provided with second reinforcing beams (106) distributed longitudinally; and / or, The upper and lower ends of the four sides of the overall structure composed of the battery module body and the two supporting end plates (1) are respectively covered with a packing belt (3); and / or, The outer surface of the packing belt (3) is covered with a heat shrink film (301).

8. The battery module according to claim 1, characterized in that: A cell connection (CCS) assembly (4), comprising an insulating carrier plate (401), an output aluminum bar (402), a first series aluminum bar (403), and a second series aluminum bar (404); The insulating carrier plate (401) is provided with a vertically penetrating welding column exposure hole (4013) at a position corresponding to the electrode welding column (201) at the top of each battery cell (2); A first series aluminum row (403) is used to connect electrode welding posts (201) with different polarities on any two adjacent battery cells of each battery cell combination in the battery module body; The second series aluminum bar (404) has two ends connected to the two battery cell combinations in the battery module body, respectively, for connecting the two battery cell combinations in the battery module body in series; Two output aluminum bars (402) are provided at the right end of the insulating carrier plate (401); The bottoms of the two output aluminum bars (402) respectively pass through a welding column exposure hole (4013) and are then welded to two electrode welding columns (201) of different polarities on two battery cells (2) of the two battery cell combinations.

9. The battery module according to claim 8, characterized in that: A first positioning circular hole (4021) is provided on the output aluminum bar (402); The output aluminum row (402) is provided with two output aluminum row circular holes (4022); and / or, Two ends of the first series-connected aluminum bar (403) are respectively provided with a second positioning circular hole (4031); Two first lead-out claws (4032) are arranged in the middle of the first series aluminum row (403); and / or, Two second lead-out claws (4041) are arranged in the middle of the second series-connected aluminum row (404); A third positioning circular hole (4042) is respectively provided at both ends of the second series-connected aluminum bar (404); and / or, The insulating carrier plate (401) is provided with a vertically penetrating air valve exposure hole (4011) at a position corresponding to the air valve (202) at the top of each battery cell (2).

10. A battery system, characterized in that: Comprising the battery module according to any one of claims 1 to 9.

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