An assembled battery module

Abstract

The utility model relates to a kind of assembled battery module in the field of battery module, the including base, insulating pad and electric core, guiding groove is formed on base, insulating pad and electric core are alternately laid along guiding groove, the both ends of base are connected with front end plate and rear end plate respectively, multiple insertion slots are opened in guiding groove, one end of insulating pad is matched with insertion slot and is inserted and positioned, the both sides of electric core are all pasted with insulating pad, the middle part of insulating pad is equipped with the through hole of conducting, the surface of insulating pad is equipped with the through ventilation slot, the setting of insertion slot realizes the accurate positioning and quick installation of insulating pad in the process of alternately laying, improves the assembly production efficiency of the alternately laid multiple electric core and multiple insulating pad, the through hole of conducting in the middle part of insulating pad and surface radial ventilation slot design, reduce the contact surface of electric core and insulating pad, and air can be guided to flow along ventilation slot, so as to improve the assembly convenience and ventilation heat dissipation effect of battery module.

Description

Technical Field

[0001] This utility model relates to the field of battery modules, specifically to an assembled battery module. Background Technology

[0002] Battery modules, as core components of new energy storage devices, are widely used in electric vehicles, energy storage power stations, and consumer electronics. They achieve high energy density and high power output by assembling multiple individual battery cells (such as lithium-ion cells) into a modular structure through series or parallel connections. In the technological field, battery module R&D focuses on improving energy efficiency, extending cycle life, ensuring safety, and optimizing production efficiency, making it one of the most technology-intensive segments in the new energy industry chain.

[0003] Currently, commercially available battery modules typically adopt a stacked assembly structure of "cell-insulating pad-cell". Specifically, multiple cells are arranged sequentially on a base along a predetermined direction, with insulating pads sandwiched between adjacent cells to achieve electrical isolation; and a front end plate and a rear end plate are connected at the ends and interconnected by bolts or welding to form a closed frame structure.

[0004] However, the existing battery module assembly structure still has the following defects: Firstly, the thickness of existing insulating pads is relatively small, and the lack of positioning structure during battery module assembly necessitates manual adjustment or the use of external tools for support. Secondly, when multiple cells and multiple insulating pads are alternately arranged, the insulating pads are difficult to position and install accurately, affecting assembly production efficiency. Thirdly, the outer surface of existing insulating pads is generally a smooth planar structure, resulting in high thermal resistance at the contact surface between the cell and the insulating pad. Furthermore, the contact surface between the insulating pad and the cell in existing battery modules is not easily ventilated, affecting the safety and reliability of the battery module. Therefore, a battery module structure that facilitates assembly and provides efficient ventilation is urgently needed. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned defects and provide an assembly battery module to solve the technical problems in the background art of how to facilitate the assembly and positioning of the insulating pad and enhance the ventilation and heat dissipation when the insulating pad is in contact with the battery cell, thereby improving the assembly convenience and ventilation and heat dissipation effect of the battery module.

[0006] The objective of this utility model is achieved through the following means:

[0007] A battery module assembly includes a base, several insulating pads, and at least two battery cells. The base has guide grooves for mating and installing the battery cells. The insulating pads and battery cells are alternately arranged along the guide grooves. A front end plate and a rear end plate are connected to both ends of the base, respectively. The front end plate and the rear end plate are mated and installed with the base. Multiple insertion slots are provided on the guide grooves. One end of each insulating pad is inserted into the guide groove and mated with the insertion slot for positioning. Multiple insulating pads are mated and inserted with multiple insertion slots. An installation gap is formed between adjacent insulating pads for mating and installing the battery cells, ensuring that both sides of the battery cell are fitted with insulating pads. A through hole is provided in the center of each insulating pad. Through ventilation slots are provided on the surface of each insulating pad, radiating from the through hole to the edge of the insulating pad. Limiting protective plates are connected to the sides of the front end plate and the rear end plate.

[0008] Furthermore, as described above, the base has raised baffles on both sides, forming a guide groove between the baffles on both sides. The baffles have mounting holes on their sides that are respectively connected to the front end plate and the rear end plate, so that the bottom ends of the front end plate and the rear end plate are paired and inserted into the guide groove, and connected to the front end plate or the rear end plate through the mounting holes by a connector.

[0009] The physical limiting structure of the retaining edge and guide groove enables precise guidance and installation of the insulating pad and the battery cell, thus providing guidance and positioning for the assembly of the battery cell and the insulating pad, allowing for alternating placement of the battery cell and the insulating pad. The mounting holes and connectors work together to achieve a rigid connection between the end plate and the base, ensuring that the insulating pad maintains a preset spacing during assembly, which is beneficial to the assembly efficiency and positioning accuracy of alternating placement of the battery cell and the insulating pad.

[0010] Furthermore, as described above, the base has an internal ventilation channel that extends along the length of the base and penetrates the insertion slot, forming a guide airflow duct.

[0011] The ventilation channel extends along the length of the base and connects with the insertion slot, forming a continuous airflow path. This allows external cooling airflow to directly enter the insertion slot area along the ventilation channel. Through the connection structure between the insertion slot and the ventilation slot of the insulating pad, an efficient heat dissipation airflow is constructed between adjacent cells, effectively reducing the contact thermal resistance of the cells and improving thermal management efficiency.

[0012] Furthermore, as described above, the insert slot is disposed on the bottom wall of the guide groove, the bottom wall of the insert slot is connected to the ventilation channel, and the insert slots are distributed at equal intervals along the guide groove.

[0013] The evenly spaced insertion slots ensure uniform distribution of the insulating pads among the battery cells, and, in conjunction with the guide slots, achieve precise positioning and installation. The bottom wall of the insertion slots is directly connected to the ventilation channel, allowing stable airflow through the installation gaps of each battery cell, avoiding localized heat accumulation, improving heat dissipation uniformity, and enhancing the structural reliability of the battery module.

[0014] Furthermore, as described above, one end of the ventilation groove extends through the through hole, and the other end of the ventilation hole extends outward, and the ventilation groove has a groove structure.

[0015] The ventilation slots, with their radially extending groove structure from the through-holes, form multiple airflow channels on the inner and outer surfaces of the insulating pad. This design significantly increases the air contact area, promotes rapid heat dissipation, and reduces the contact thermal resistance between the battery cell and the insulating pad, thereby further improving the thermal management control and heat dissipation efficiency between the battery cells.

[0016] Furthermore, as described above, both the front end plate and the rear end plate have internal conductive buffer channels, forming protective portions on the outer surfaces of the front end plate and the rear end plate. Both sides of the front end plate and the rear end plate have positioning holes, and both ends of the limiting protective plate are provided with connecting portions, which have connecting holes that match the positioning holes.

[0017] The internal buffer channels of the front / rear panel absorb external impact energy, forming impact-resistant protection in conjunction with the outer protective parts. The matching design of the positioning holes and the connection parts of the limiting protective plates ensures a stable connection between the front / rear panel and the limiting protective plates, forming a three-dimensional protective frame structure at both ends of the battery module, improving the overall structural reliability and stability.

[0018] Furthermore, as described above, the top of the front end plate and the rear end plate are connected to pressure plates, the two ends of which are respectively connected to the front end plate and the rear end plate, and the pressure plates can apply longitudinal restraint to the battery cell.

[0019] The pressure plate is connected to the end plate at both ends, applying longitudinal restraint force to the battery cell. This structure keeps the battery cell and the insulating pad in close contact while preventing longitudinal movement of the battery cell, improving structural compactness and safety, and reducing poor contact or failure caused by vibration.

[0020] Furthermore, as described above, the ventilation slots are arranged on the inner and outer sides of the insulating pad and the battery cell, so that a ventilation gap is formed between the ventilation slots and the battery cell.

[0021] Ventilation slots on the inner and outer sides create ventilation gaps between the battery cell and the insulating pad. This allows cooling airflow to enter the ventilation gaps through the ventilation channels, significantly reducing the contact heat between adjacent battery cells and improving ventilation and heat dissipation efficiency.

[0022] The beneficial effects of this utility model are as follows: Through the design of the guide groove and multiple insertion slots on the base, one end of the insulating pad can be inserted into the guide groove and accurately inserted into the corresponding insertion slot for positioning. This solves the problem that existing insulating pads, due to their small thickness, require manual support or external tools for adjustment during assembly. It enables precise positioning and rapid installation of the insulating pad during alternating deployment, improving the assembly production efficiency of alternating deployment of multiple cells and multiple insulating pads. The through-hole and radial ventilation groove design in the middle of the insulating pad reduces the contact area between the cell and the insulating pad. At the same time, the radial distribution of the ventilation grooves from the through-hole to the edge guides air to flow along the gap between the ventilation grooves of the insulating pad and the cell, enhancing the ventilation and heat dissipation capacity of the contact area between the insulating pad and the cell, improving the safety and reliability of the battery module, and thus improving the assembly convenience and ventilation and heat dissipation effect of the battery module.

[0023] The front and rear boards are paired and installed at both ends of the pre-base to form a module frame. Combined with the side-connected limiting and protective plates, the module as a whole is physically protected, ensuring the mechanical strength and structural reliability of the battery module during assembly and use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure from the forward-looking angle in this embodiment;

[0025] Figure 2 This is a schematic diagram of the overall structure from the rear-view angle in this embodiment;

[0026] Figure 3 This is an exploded structural diagram of this embodiment;

[0027] Figure 4 This is a cross-sectional view of this embodiment;

[0028] Figure 5 for Figure 4 A magnified view of part A in the diagram;

[0029] The reference numerals in the figure are as follows: 1-base, 2-insulating pad, 3-battery cell, 4-guide groove, 5-front end plate, 6-rear end plate, 7-insertion groove, 8-through hole, 9-ventilation groove, 10-limiting protective plate, 11-edge, 12-mounting hole, 13-ventilation channel, 14-buffer channel, 15-positioning hole, 16-connecting part, 17-connecting hole, 18-pressure plate, 19-connector. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] In this embodiment, refer to Figures 1-5The present invention relates to an assembled battery module comprising a base 1, several insulating pads 2, and at least two battery cells 3. The base 1 has guide grooves 4 for mating and installing the battery cells 3. The insulating pads 2 and battery cells 3 are alternately arranged along the guide grooves 4. A front end plate 5 and a rear end plate 6 are connected to both ends of the base 1, and the front end plate 5 and rear end plate 6 are mated and installed with the base 1. Multiple insertion slots 7 are provided on the guide grooves 4. One end of each insulating pad 2 is inserted into the guide groove 4 and mated and positioned with the insertion slot 7. Multiple insulating pads 2 are mated and inserted with multiple insertion slots 7. An installation gap is formed between adjacent insulating pads 2 for mating and installing the battery cells 3, ensuring that both sides of the battery cells 3 are fitted with insulating pads 2. A through hole 8 is provided in the middle of each insulating pad 2. Through ventilation slots 9 are provided on the surface of each insulating pad 2, radiating from the through hole 8 to the edge of the insulating pad 2. Limiting protective plates 10 are connected to the sides of the front end plate 5 and the rear end plate 6.

[0032] Specifically, in this embodiment, the battery module has seven battery cells 3 and eight insulating pads 2, with the insulating pads 2 and battery cells 3 arranged alternately in sequence. The insulating pads 2 are attached to both sides of the battery cells 3, with the insulating pads 2 separating two battery cells 3, thereby further ensuring the safety and reliability of the battery cell arrangement.

[0033] The base 1 has raised baffles 11 on both sides, forming a guide groove 4 between the baffles 11 on both sides. The baffles 11 have mounting holes 12 on their sides that are connected to the front end plate 5 and the rear end plate 6 respectively, so that the bottom ends of the front end plate 5 and the rear end plate 6 are paired and inserted into the guide groove 4, and are connected to the front end plate 5 or the rear end plate 6 through the mounting holes 12 via connectors 19.

[0034] The physical limiting structure of the retaining edge 11 and the guide groove 4 enables precise guiding and installation of the insulating pad 2 and the battery cell 3, thus providing guidance and positioning for the assembly of the battery cell 3 and the insulating pad 2, allowing them to be arranged alternately. The mounting hole 12 cooperates with the connector 19 to achieve a rigid connection between the end plate and the base 1, ensuring that the insulating pad 2 always maintains a preset spacing during the assembly process, which is beneficial to the assembly efficiency and positioning accuracy of the alternating arrangement of the battery cell 3 and the insulating pad 2.

[0035] Specifically, in this embodiment, the connector 19 is made of screws or bolts. The bolts are used to connect to the front / rear end plates 6 through the mounting holes 12 of the baffle 11. The raised baffle 11 structure can protect the side of the cell 3. The bottom of the base 1 can provide protection for the bottom of the cell 3. The front end plate 5 and the rear end plate 6 are paired and installed at both ends of the pre-base 1 to form a module frame. Combined with the limiting protection plate 10 connected to the side, it provides physical protection for the entire module and ensures the mechanical strength and structural reliability of the battery module during assembly and use.

[0036] The base 1 has a ventilation channel 13 inside, which extends along the length of the base 1 and penetrates the insertion slot 7, so that the ventilation channel 13 passes through the insertion slot 7 and forms a guide air duct with the ventilation slot 9.

[0037] The ventilation channel 13 extends along the length of the base 1 and connects with the insertion slot 7 to form a continuous flow path. This allows external cooling airflow to directly enter the insertion slot 7 area along the ventilation channel 13. Through the connection structure between the insertion slot 7 and the ventilation slot 9 of the insulating pad 2, an efficient heat dissipation airflow is constructed between adjacent cells 3, effectively reducing the contact thermal resistance of the cells 3 and improving thermal management efficiency.

[0038] The formed airflow channels can provide ventilation and heat dissipation for adjacent cells 3, further enhancing thermal management between cells 3.

[0039] The insert slot 7 is disposed on the bottom wall of the guide groove 4, and the bottom wall of the insert slot 7 is connected to the ventilation channel 13. The insert slots 7 are evenly distributed along the guide groove 4.

[0040] The evenly spaced insertion slots 7 ensure that the insulating pads 2 are evenly distributed among the battery cells 3, and work with the guide slots 4 to achieve precise positioning and installation. The bottom wall of the insertion slots 7 is directly connected to the ventilation channel 13, so that there is a stable airflow through the installation gap of each battery cell 3, avoiding local heat accumulation, improving heat dissipation uniformity, and enhancing the structural reliability of the battery module.

[0041] One end of the ventilation groove 9 extends into the through hole 8, and the other end of the ventilation hole extends outward. The ventilation groove 9 has a groove structure.

[0042] The ventilation slots 9 are radially extending groove structures from the through holes 8 outwards, forming multiple airflow channels on the inner and outer sides of the insulating pad 2. This design significantly increases the air contact area, promotes rapid heat dissipation, and reduces the contact thermal resistance between the battery cell 3 and the insulating pad 2, thereby further improving the thermal management control of heat dissipation efficiency between the battery cells 3.

[0043] The radial ventilation grooves 9 that run through the surface of the insulating pad 2 and the central through hole 8 form a three-dimensional ventilation network. When the battery cell 3 generates heat during operation, the through hole 8 and the radial ventilation grooves 9 work together to quickly exhaust hot air and introduce fresh air, thereby improving the overall performance and service life of the battery module.

[0044] Both the front end plate 5 and the rear end plate 6 have internally connected buffer channels 14, which form protective parts on the outer surfaces of the front end plate 5 and the rear end plate 6. Both sides of the front end plate 5 and the rear end plate 6 have positioning holes 15. Both ends of the limiting protective plate 10 are provided with connecting parts 16, and connecting parts 16 have connecting holes 17 that match the positioning holes 15.

[0045] The internal buffer channel 14 of the front end plate 5 and the rear end plate 6 can absorb external impact energy, forming impact-resistant protection in conjunction with the outer protective part. The matching design of the positioning hole 15 and the connection part 16 of the limiting protective plate 10 realizes a stable connection between the front / rear end plate 6 and the limiting protective plate 10, forming a three-dimensional protective frame structure at both ends of the battery module, improving the overall structural reliability and stability.

[0046] The front end plate 5 and the rear end plate 6 are connected to the top of a pressure plate 18. The two ends of the pressure plate 18 are connected to the front end plate 5 and the rear end plate 6 respectively, and the pressure plate 18 can apply longitudinal restraint to the battery cell 3.

[0047] The pressure plate 18 is connected to the end plate at both ends, applying a longitudinal constraint force to the battery cell 3. This structure keeps the battery cell 3 and the insulating pad 2 in contact while preventing longitudinal movement of the battery cell 3, improving structural compactness and safety, and reducing poor contact or failure caused by vibration.

[0048] The ventilation slots 9 are symmetrically arranged on the inner and outer sides of the insulating pad 2 and the battery cell 3. Specifically, in this embodiment, the ventilation slots 9 are arranged in a horizontal and vertical linear array, so that there are horizontal and vertical ventilation gaps between the ventilation slots 9 and the battery cell 3.

[0049] The ventilation slots 9 arranged on the inner and outer sides form a ventilation gap between the battery cell 3 and the insulating pad 2. This allows the cooling airflow to enter the ventilation gap through the ventilation channel 13, significantly reducing the contact heat between two adjacent battery cells 3 and improving the efficiency of ventilation and heat dissipation.

[0050] Specifically, the base 1 is molded into a profile, and the base 1 is cut to the corresponding length according to the number of battery cells 3, so that it can be set according to the assembly and use requirements of the battery cells 3.

[0051] The specific operating principle in this embodiment is as follows:

[0052] The bottom end of the rear end plate 6 is inserted into the guide groove 4 and connected to the base 1 with bolts to form a positioning structure. This allows the insulating pad 2 and the battery cell 3 to be alternately installed in the guide groove 4, with the bottom end of the insulating pad 2 paired and inserted into the insertion groove 7. The insertion groove 7 provides accurate positioning for the insulating pad 2. The retaining edge 11 of the base 1 serves as a guide and bottom protection for the insulating pad 2 and the battery cell 3. The design of the guide groove 4 and multiple insertion grooves 7 on the base 1 allows one end of the insulating pad 2 to pass through the guide groove 4 and be precisely inserted into the corresponding insertion groove 7 for positioning, solving the problem of existing insulating pads... The thinness of plate 2 causes the need for manual support or adjustment with external tools during assembly. To achieve precise positioning and rapid installation of insulating pad 2 during alternating deployment, the assembly production efficiency of alternating deployment of multiple battery cells 3 and multiple insulating pads 2 is improved. After the corresponding number of insulating pads 2 and battery cells 3 are assembled, the front end plate 5 is installed at the other end of the base 1 and connected to the front end plate 5 and the rear end plate 6 through the two ends of the limiting protection plate 10. There are four limiting protection plates 10, which are symmetrically distributed on both sides in pairs, so that the base 1, the front / rear end plates 6 and the limiting protection plates 10 can form a frame assembly structure for protecting the battery cells 3.

[0053] The insulating pad 2 features a through hole 8 in the center and radial ventilation grooves 9 on its inner and outer surfaces. This design reduces the contact area between the battery cell 3 and the insulating pad 2. The grooves in the ventilation grooves 9, and their radial distribution from the through hole 8 to the edge, guide air flow along the gap between the ventilation grooves 9 and the battery cell 3. A ventilation channel 13 is also provided on the base 1, connected to the insertion slot 7. This allows cooling air to pass through the insertion slot 7 and enter the ventilation grooves 9. The ventilation grooves 9 are distributed on the surface of the insulating pad 2, creating a ventilation gap between the ventilation grooves 9 and the outer surface of the battery cell 3. This allows external cool air to be introduced along the ventilation grooves 9 into the contact area between the insulating pad 2 and the battery cell 3, enhancing the ventilation and heat dissipation capacity of the contact surface and improving the safety and reliability of the battery module.

[0054] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A battery module assembly, characterized in that, The device includes a base, several insulating pads, and at least two battery cells. The base has guide grooves for mating and installing the battery cells. The insulating pads and battery cells are alternately arranged along the guide grooves. A front end plate and a rear end plate are connected to both ends of the base, and the front end plate and the rear end plate are mated and installed with the base. Multiple insertion slots are provided on the guide grooves. One end of the insulating pad is inserted into the guide groove and mated and positioned with the insertion slot. Multiple insulating pads are mated and inserted with multiple insertion slots. An installation gap is formed between two adjacent insulating pads for mating and installing the battery cells, so that the insulating pads are attached to both sides of the battery cells. A through hole is provided in the middle of the insulating pad. A through ventilation groove is provided on the surface of the insulating pad. The ventilation groove is radially distributed from the through hole to the edge of the insulating pad. Limiting protective plates are connected to the sides of the front end plate and the rear end plate.

2. The battery module assembly according to claim 1, characterized in that: The base has raised baffles on both sides, forming a guide groove between the baffles. The sides of the baffles are provided with mounting holes for connecting to the front end plate and the rear end plate respectively, so that the bottom ends of the front end plate and the rear end plate are paired and inserted into the guide groove, and connected to the front end plate or the rear end plate through the mounting holes by connectors.

3. The battery module assembly according to claim 1, characterized in that: The base has an internal ventilation channel that extends along the length of the base and penetrates the insertion slot, forming a guide airflow channel.

4. The battery module assembly according to claim 3, characterized in that: The insert slots are disposed on the bottom wall of the guide groove, and the bottom wall of the insert slots is connected to the ventilation channel. The insert slots are distributed at equal intervals along the guide groove.

5. The battery module assembly according to claim 1, characterized in that: One end of the ventilation slot extends into the through hole, and the other end of the ventilation hole extends outward. The ventilation slot has a groove structure.

6. The battery module assembly according to claim 1, characterized in that: Both the front and rear plates have internal conductive buffer channels, forming protective parts on their outer surfaces. Both the front and rear plates have positioning holes on their sides, and both ends of the limiting protective plate have connecting parts with connecting holes that match the positioning holes.

7. A battery module assembly according to any one of claims 1-6, characterized in that: The front end plate and the rear end plate are connected to a pressure plate at their top. The two ends of the pressure plate are connected to the front end plate and the rear end plate respectively, and the pressure plate can apply longitudinal restraint to the battery cell.

8. A battery module assembly according to any one of claims 1-6, characterized in that: The ventilation slots are arranged on the inner and outer sides of the insulating pad and the battery cell, so that a ventilation gap is formed between the ventilation slots and the battery cell.

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