Automatic pressurizing machine for double-sided heating film of power battery module

Abstract

The present invention discloses a special automatic pressurizing machine for heating films on both sides of a power battery module, which comprises: a pressurizing unit frame; a pressurizing unit assembly connected to the pressurizing unit frame; and a battery module feeding and discharging module; wherein the pressurizing unit assembly is two symmetrically arranged, and there is a pressurizing area for accommodating the power battery module between the two pressurizing units, and the battery module feeding and discharging module drives the power battery module to enter the pressurizing area, and after the two pressurizing units clamp and pressurize both sides of the power battery module at the same time, the battery module feeding and discharging module drives the power battery module to leave the pressurizing area. The special automatic pressurizing machine for heating films on both sides of a power battery module of the present invention is a double-row flat-open structure layout, has good compatibility, can realize automatic clamping of heating films of power battery modules of different specifications, can reliably press-fit the heating films, and can greatly improve the press-fitting operation efficiency and bonding rate.

Description

Technical Field

[0001] The invention relates to an automatic pressurizing device for double-sided heating films of a power battery module, and is particularly suitable for pressurizing and correcting the double-sided heating films after the films are applied to square hard-pack power lithium battery modules, so that the double-sided heating films are closely attached to the side walls of the battery modules. Background Art

[0002] In recent years, the film laminating process for power lithium battery modules of new energy vehicles, as a new process for hard-pack battery grouping, can greatly improve the thermal conductivity, insulation performance and group strength of battery modules, which is conducive to improving the stability and reliability of power batteries and vehicles. In the process of heating film assembly, manual pressing is basically adopted, which not only has low work efficiency, but also has difficulty in ensuring the bonding rate. The consistency of products produced by this process is low, and it is easy for the battery module to be unevenly pressurized, resulting in damage to the battery cell due to overload. At present, there is a lack of special equipment on the market that can be used for automatic pressurization of double-sided heating films of power battery modules, so it cannot meet the development needs of the power battery industry.

[0003] As new materials and technologies such as servo electric cylinders, programmable controllers, and foam materials become more mature, intelligent production has penetrated into various industrial fields, including the power lithium battery industry. In particular, the cross-disciplinary integration of new-generation artificial intelligence technology, deep learning technology, and visual inspection technology has greatly promoted the technological upgrade of core unit equipment, thereby promoting the development of heating film automatic press-fitting technology towards automation, intelligence, safety, efficiency, and high precision. Summary of the invention

[0004] The purpose of the present invention is to provide a special automatic pressurizing machine for heating films on both sides of a power battery module, so as to reliably and automatically press-fit the heating films on both sides of the power battery module.

[0005] In order to achieve the above-mentioned purpose, the automatic pressurizing machine for double-sided heating film of power battery module of the present invention comprises: a pressurizing unit frame; a pressurizing machine assembly connected to the pressurizing unit frame; and a battery module feeding and discharging module; wherein, the pressurizing machine assembly is symmetrically arranged in two, and there is a pressurizing area for accommodating the power battery module between the two pressurizing machine assemblies, and the battery module feeding and discharging module drives the power battery module into the pressurizing area, and after the two pressurizing machine assemblies clamp and pressurize both sides of the power battery module at the same time, the battery module feeding and discharging module drives the power battery module to leave the pressurizing area.

[0006] In one embodiment of the above-mentioned automatic pressurizing machine for double-sided heating film of power battery module, the pressurizing machine assembly includes: a press-fitting mounting plate connected to the pressurizing unit frame; a press-fitting part connected to the press-fitting mounting plate; a pressure sensor assembly connected to the front end of the press-fitting part; and a control module connected to the pressure sensor assembly and the press-fitting part, and controlling the movement of the press-fitting part according to the pressure value detected by the pressure sensor assembly.

[0007] In one embodiment of the above-mentioned automatic pressurizing machine for double-sided heating films of power battery modules, the pressurizing machine assembly further includes: a pressure-bearing push plate connected to a side of the pressure sensor assembly facing the pressurizing area.

[0008] In one embodiment of the above-mentioned automatic pressurizing machine for double-sided heating films of power battery modules, the pressurizing machine assembly further comprises: a reinforcing rib plate connected to the side of the pressure-bearing push plate facing away from the pressurizing area.

[0009] In one embodiment of the above-mentioned automatic pressurizing machine for double-sided heating film of power battery module, the pressurizing machine assembly also includes: a flexible pressure plate assembly, including a flexible pressure plate and a detachable connecting piece, and the flexible pressure plate is detachably connected to the side of the pressure-bearing push plate facing the pressurizing area through the detachable connecting piece.

[0010] In one embodiment of the above-mentioned automatic pressurizing machine for the double-sided heating film of the power battery module, the flexible pressing plate is an aerogel material piece.

[0011] In one embodiment of the above-mentioned automatic pressurizing machine for double-sided heating films of power battery modules, the pressurizing machine assembly further includes: a load-bearing plate guide connected between the pressure load-bearing push plate and the press-fitting mounting plate.

[0012] In one embodiment of the above-mentioned automatic pressurizing machine for double-sided heating films of power battery modules, the pressurizing machine assembly further includes: a material detection sensor assembly connected to the press-fit mounting plate.

[0013] In one embodiment of the above-mentioned automatic pressurizing machine for the double-sided heating film of the power battery module, the pressure sensor assembly is arranged between the pressing part and the pressure-bearing push plate, including: a first pressing plate and a second pressing plate arranged relatively parallel to each other, the first pressing plate corresponds to the pressing part, and the second pressing plate corresponds to the pressure-bearing push plate; and a pressure sensor, which is arranged between the first pressing plate and the second pressing plate.

[0014] In one embodiment of the above-mentioned automatic pressurizing machine for double-sided heating film of power battery module, the pressure sensor assembly also includes: a reset spring, which is arranged between the corners of the first pressure plate and the second pressure plate, and the pressure sensor is arranged between the middle parts of the first pressure plate and the second pressure plate; and a guide column, and the reset spring is sleeved on the guide column.

[0015] The beneficial effect of the present invention is that the automatic pressurizing machine for the double-sided heating film of the power battery module of the present invention can change the operation mode of the pressing process of the double-sided heating film of the power battery module, realize the purpose of "machine replacement" in the pressing process, and greatly improve the pressing operation efficiency and bonding rate.

[0016] The automatic pressurizing machine for double-sided heating films of power battery modules of the present invention has a double-row flat-open structure layout, has good compatibility, can realize automatic clamping of heating films of power battery modules of different specifications, and can reliably press-fit the heating films.

[0017] In actual pressing operations, the automatic pressurizing machine for double-sided heating films of power battery modules of the present invention has the advantages of double-sided synchronous pressing, small footprint, easy product switching, good compatibility, etc., and effectively solves the common problems existing in the pressing process of double-sided heating films of battery modules.

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the working state of one embodiment of the automatic pressurizing machine for double-sided heating films of a power battery module of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the pressurizing unit frame and the pressurizing machine components of the automatic pressurizing machine for the double-sided heating film of the power battery module of the present invention after being assembled;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of an embodiment of a pressurizing machine assembly of an automatic pressurizing machine for double-sided heating films of a power battery module of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of an embodiment of a battery module feeding and discharging module of an automatic pressurizing machine for double-sided heating films of a power battery module of the present invention;

[0023] Figure 5 It is a schematic diagram of the double-sided heating film of the power battery module;

[0024] Figure 6It is a schematic diagram showing that the contact surfaces of the single cells of the automatic pressurizing machine for the double-sided heating films of the power battery module of the present invention are not coplanar;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of an embodiment of a pressure sensor assembly of an automatic pressurizing machine for double-sided heating films of a power battery module of the present invention;

[0026] Figure 8 for Figure 7 Side view of.

[0027] Among them, the reference numerals

[0028] 100: Pressurized unit rack

[0029] 200: Pressurizer assembly

[0030] 210: Press-fit mounting plate

[0031] 220: Pressed parts

[0032] 230: Pressure sensor assembly

[0033] 240: Pressure bearing push plate

[0034] 250: Reinforced rib plate

[0035] 260: Flexible pressure plate assembly

[0036] 270: Bearing plate guide

[0037] 271: Linear guide

[0038] 272: Guide rail connector

[0039] 280: Material detection sensor assembly

[0040] 231: First pressure plate

[0041] 232: Second pressure plate

[0042] 233: Pressure sensor

[0043] 234: Return spring

[0044] 235: Guide column

[0045] 300: Battery module feeding and unloading module

[0046] 310: Battery module tooling board

[0047] 320: Bottom lifting and positioning mechanism

[0048] 330: Front blocking mechanism

[0049] 340: Double-speed chain transmission mechanism

[0050] 400: Pressurized area

[0051] 10: Automatic pressurization machine

[0052] 20: Power battery module

[0053] 21: Battery

[0054] 22: Heating film DETAILED DESCRIPTION

[0055] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0056] Certain words are used in the specification and subsequent claims to refer to specific components or parts. It should be understood by those of ordinary skill in the art that technical users or manufacturers may refer to the same component or part by different nouns or terms. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in the functions of components or parts as the criteria for distinction. "Including" and "comprising" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0057] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and "about", or "approximately", "substantially", "left and right" and the like indicating directions or positional relationships or parameters are all based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description content, and do not indicate or imply that the referred device or element must have a specific direction, specific size, or be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0058] like Figures 1 to 5 As shown, Figure 1 This is a three-dimensional structural schematic diagram of the working state of an embodiment of the automatic pressurizing machine for double-sided heating films of a power battery module of the present invention. Figure 2 It is a schematic diagram of the three-dimensional structure of the pressurizing unit frame and the pressurizing machine components of the automatic pressurizing machine for the double-sided heating film of the power battery module of the present invention after being assembled, Figure 3 It is a three-dimensional structural schematic diagram of an embodiment of a pressurizing machine assembly of an automatic pressurizing machine for double-sided heating films of a power battery module of the present invention, Figure 4 It is a three-dimensional structural schematic diagram of an embodiment of a battery module feeding and discharging module of an automatic pressurizing machine for double-sided heating films of a power battery module of the present invention, Figure 5 Schematic diagram of the double-sided heating film of the power battery module.

[0059] The automatic pressurizing machine for the double-sided heating films of the power battery module of the present invention is mainly used for reliable and automatic press-fitting of the heating films on both sides of the square hard-pack power lithium battery module, solving the process problems that need to be urgently addressed, such as low adhesion rate and poor quality consistency, in the pressurizing process of the double-sided heating films of the power battery module.

[0060] The automatic pressurizing machine 10 for the double-sided heating film of the power battery module of the present invention comprises a pressurizing unit frame 100, a pressurizing unit assembly 200 and a battery module inlet and outlet module 300, wherein the pressurizing unit frame 200 is connected to the pressurizing unit frame 100, and the battery module inlet and outlet module 300 is used to drive the power battery module 20 to move. Among them, the pressurizing unit assembly 200 is symmetrically arranged, and there is a pressurizing area 400 for accommodating the power battery module 20 between the two pressurizing unit assemblies 200, and the battery module inlet and outlet module 300 drives the power battery module 20 to enter the pressurizing area 400, and the two pressurizing unit assemblies 200 clamp and pressurize both sides of the power battery module 20 at the same time. After completing the automatic pressurization of the double-sided heating film 22 of the power battery module 20, the battery module inlet and outlet module 300 drives the power battery module 20 to leave the pressurizing area 400.

[0061] The present invention designs the pressurizing machine assembly 200 as a double-row arrangement structure, which solves the problem of clamping both sides of the power battery module 20 at the same time, and has good compatibility with power battery modules of different shapes and sizes. In addition, the pressurizing machine frame 100 and the assembly of the pressurizing machine assembly 200 and the battery module feeding and discharging module 300 are nested combined structures.

[0062] Among them, the pressurizing machine assembly 200 is installed on the pressurizing unit frame 100, for example, by special aluminum profile bolts, and the pressurizing unit frame 100 is installed on the battery module input and output module 300, for example, by aluminum profile angle pieces. The main body of the pressurizing unit frame 100 adopts an aluminum profile structure, which is convenient for modular assembly and has a high cost performance. The battery module input and output module 300 adopts a double-speed chain conveyor line structure to keep the operator away from the pressurizing area 400, and the operation safety is good.

[0063] Combination Figure 4The battery module feeding and discharging module 300 includes a battery module tooling plate 310, a bottom lifting and positioning mechanism 320, a front end blocking mechanism 330, and a double-speed chain conveying mechanism 340. The present invention uses the double-speed chain conveying mechanism 340 to transport the power battery module 20 and the battery module tooling plate 310 to a specific position, and the front end blocking mechanism 330 and the bottom lifting and positioning mechanism 340 work together to realize the lifting and positioning of the power battery module 20 and the battery module tooling plate 310. The heating films 22 on both sides of the power battery module 20 are pressed and pressurized by the symmetrically arranged pressurizing machine assembly 200.

[0064] Combination Figure 3 The press assembly 200 includes a press-fitting mounting plate 210, a press-fitting part 220, a pressure sensor assembly 230 and a control module. The press-fitting mounting plate 210 is connected to the press-fitting unit frame 100, the press-fitting part 220 is connected to the press-fitting mounting plate 210, the pressure sensor assembly 230 is connected to the front end of the press-fitting part 220, that is, the pressure sensor assembly 230 is placed between the press-fitting part 220 and the pressurizing area 400, and the control module is connected to the pressure sensor assembly 230 and the press-fitting part 220. The press-fitting mounting plate 210 is used to assemble and fix with the press-fitting unit frame 100, and the entire press-fitting machine assembly 200 is fixed to the press-fitting unit frame 100 through the press-fitting mounting plate 210. Among them, the press-fitting part 220 is, for example, a press-fitting cylinder or a stepping electric cylinder.

[0065] In the present invention, both sets of pressurizing machine assemblies 200 are equipped with pressure sensor assemblies 230, which can monitor the entire pressurizing process in real time and perform closed-loop control, and have three working modes: pressurization, pressure maintenance, and pressure relief. In detail, after the power battery module 20 enters the designated position of the pressurizing area 400 through the battery module feeding and discharging module 300, the control module controls the movement of the pressurizing part 220 to maintain the pressure of the power battery module 20. When the pressure sensor assembly 230 senses the expected set pressure value, and ensures that the double-sided heating film 22 of the power battery module 20 maintains a constant pressure for a certain period of time, the double-sided heating film 22 is deformed and corrected to fit tightly with the battery 21. After the pressurization and pressure maintenance are completed, the control module controls the movement of the pressurizing part 220 to relieve the pressure on the power battery module 20, and the press-fitting process of the double-sided heating film 22 of the power battery module 20 is completed.

[0066] The press assembly 200 further includes a pressure bearing push plate 240, which is connected to the side of the pressure sensor assembly 230 facing the pressurizing area 400. The pressure sensor assembly 230 is placed between the press-fitting part 220 and the pressure bearing push plate 240. The clamping force applied by the press-fitting part 220 is transmitted to the power battery module 20 through the pressure bearing push plate 240, and the clamping force applied by the press-fitting part 220 is detected and fed back in real time through the pressure sensor assembly 230.

[0067] The press assembly 200 further includes a reinforcing rib plate 250, which is connected to the side of the pressure bearing push plate 240 facing away from the pressurizing area 400, that is, the reinforcing rib plate 250 is connected to the side of the pressure bearing push plate 240 facing the pressure sensor assembly 230. For example, there are multiple reinforcing rib plates 250, and multiple reinforcing rib plates 115 are installed on the pressure bearing push plate 116 to improve the strength of the pressure bearing push plate 240.

[0068] The press assembly 200 further includes a flexible pressure plate assembly 260, which includes a flexible pressure plate and a detachable connector, and the flexible pressure plate is detachably connected to the side of the pressure-bearing push plate 240 facing the pressurizing area 400 through the detachable connector. The flexible pressure plate assembly 260 is used to directly contact the power battery module 20 to apply a clamping force. The flexible pressure plate assembly 260 is connected, for example, by snap connection, screw connection, bonding, etc. to support quick replacement, so as to facilitate quick replacement when it is worn or changed.

[0069] The present invention cleverly integrates the press-fitting part 220, such as the servo electric cylinder, and the flexible pressure plate assembly 260 to achieve close fitting of the double-sided heating films. The flexible pressure plate of the flexible pressure plate assembly 260 is made of a high-porosity aerogel material, which has the advantages of good elastic deformation performance and extremely light material, and can effectively solve the problem of non-coplanar contact surfaces caused by the uneven lengths of the single cells of the battery 21, such as Figure 6 As shown, Figure 6 The schematic diagram of the non-coplanar force surfaces of the single cells of the automatic pressurizing machine for the double-sided heating film of the power battery module of the present invention. Relying on the good elastic deformation performance of the flexible pressure plate assembly 260, the "leveling" of the microscopic uneven surface is achieved, ensuring that each single cell of the battery 21 and the heating film 22 are evenly pressed, thereby improving the bonding rate.

[0070] like Figure 3 As shown, the press assembly 200 further includes a bearing plate guide 270, which is connected between the pressure bearing push plate 240 and the press-fitting mounting plate 210, and is used to guide the pressure bearing push plate 240. The bearing plate guide 270 includes a linear guide rail 271 and a linear guide rail connection seat 272, and the linear guide rail connection seat 272 is installed on the press-fitting mounting plate 210. The linear guide rail 271 is connected to the pressure bearing push plate 240 and can slide along the guide rail connection seat 272. For example, there are two bearing plate guides 270, which are respectively arranged on both sides of the press-fitting part 220, so as to guide the pressure bearing push plate 240 when the press-fitting part 220 drives the pressure bearing push plate 240 to move back and forth.

[0071] The press assembly 200 further includes a material detection sensor assembly 280 , which is connected to the press mounting plate 210 for performing material shortage detection.

[0072] like Figure 7 and Figure 8 As shown, Figure 7 This is a schematic diagram of the three-dimensional structure of an embodiment of a pressure sensor assembly of an automatic pressurizing machine for double-sided heating films of a power battery module of the present invention. Figure 8 for Figure 7 The pressure sensor assembly 230 includes a first pressing plate 231, a second pressing plate 232 and a pressure sensor 233. The first pressing plate 231 and the second pressing plate 232 are arranged in parallel with each other. The first pressing plate 231 is arranged corresponding to the press-fitting member 220, and the second pressing plate 232 is arranged corresponding to the pressure-bearing push plate 240. The pressure sensor 233 is arranged between the first pressing plate 231 and the second pressing plate 232. The press-fitting member 220 transmits the pressing force to the power battery module 20 located in the pressurizing area 400 through the first pressing plate 231, the pressure sensor 233 and the second pressing plate 232.

[0073] The pressure sensor assembly 230 also includes a reset spring 234 and a guide column 235. The reset spring 234 is arranged between the corners of the first pressing plate 231 and the second pressing plate 232. The pressure sensor 233 is arranged between the middle parts of the first pressing plate 231 and the second pressing plate 232. The reset spring 234 is sleeved on the guide column 235. One end of the guide column 235 can be fixed on the first pressing plate 231 corresponding to the pressing member 220, and the second pressing plate 232 passes through the guide column 235. In actual operation, the pressing member 220 drives the pressure bearing push plate 240 forward. Before the formal clamping, the pressure sensor 233 can be free from pressure by virtue of the elasticity of the reset spring 234. When the pressure sensor 233 is formally clamped, the reset spring 234 contracts, and the pressure sensor 233 is formally under pressure, so as to realize the real-time detection of the clamping force.

[0074] The automatic pressurizing machine for the double-sided heating film of the power battery module of the present invention integrates servo drive, programmable control, and precision sensing technology, which ensures the feasibility and advancement of the special equipment and can promote major changes in the assembly operation mode of the double-sided heating film of the power battery module.

[0075] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An automatic pressurizing machine for double-sided heating films of power battery modules, characterized in that: include: Pressurized unit rack; A pressurizing machine assembly, connected to the pressurizing machine frame; as well as Battery module loading and unloading module; There are two pressurizing machine assemblies symmetrically arranged, and a pressurizing area for accommodating the power battery module is provided between the two pressurizing machine assemblies. The battery module feeding and discharging module drives the power battery module into the pressurizing area. After the two pressurizing machine assemblies clamp and pressurize both sides of the power battery module at the same time, the battery module feeding and discharging module drives the power battery module to leave the pressurizing area. The press assembly comprises: A press-fit mounting plate connected to the frame of the pressurizing unit; A press-fit part connected to the press-fit mounting plate; A pressure sensor assembly connected to the front end of the press-fit part; and The control module is connected to the pressure sensor assembly and the press-fitting component, and controls the movement of the press-fitting component according to the pressure value detected by the pressure sensor assembly.

2. The automatic pressurizing machine for double-sided heating films of power battery modules according to claim 1, characterized in that: The press assembly also includes: A pressure bearing push plate is connected to a side of the pressure sensor assembly facing the pressurized area.

3. The automatic pressurizing machine for double-sided heating films of power battery modules according to claim 2, characterized in that: The press assembly also includes: A reinforcing rib plate is connected to a side of the pressure-bearing push plate facing away from the pressurizing area.

4. The automatic pressurizing machine for double-sided heating films of power battery modules according to claim 2, characterized in that: The press assembly also includes: The flexible pressing plate assembly comprises a flexible pressing plate and a detachable connecting piece, wherein the flexible pressing plate is detachably connected to a side of the pressure-bearing push plate facing the pressurizing area through the detachable connecting piece.

5. The automatic pressurizing machine for double-sided heating films of power battery modules according to claim 4, characterized in that: The flexible pressing plate is made of aerogel material.

6. The automatic pressurizing machine for double-sided heating films of power battery modules according to claim 2, characterized in that: The press assembly also includes: The load-bearing plate guide is connected between the pressure load-bearing push plate and the press-fitting installation plate.

7. The automatic pressurizing machine for double-sided heating films of power battery modules according to claim 2, characterized in that: The press assembly also includes: The material detection sensor assembly is connected to the press-fit mounting plate.

8. The automatic pressurizing machine for double-sided heating films of power battery modules according to any one of claims 2 to 7, characterized in that: The pressure sensor assembly is arranged between the press-fitting part and the pressure bearing push plate, and includes: A first pressing plate and a second pressing plate arranged in parallel with each other, the first pressing plate corresponds to the press-fitted part, and the second pressing plate corresponds to the pressure-bearing push plate; and The pressure sensor is arranged between the first pressing plate and the second pressing plate.

9. The automatic pressurizing machine for double-sided heating films of power battery modules according to claim 8, characterized in that: The pressure sensor assembly further comprises: a return spring disposed between corners of the first pressing plate and the second pressing plate, and the pressure sensor disposed between middle portions of the first pressing plate and the second pressing plate; and A guide column, wherein the return spring is sleeved on the guide column.

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