Low-pressure module pressure maintaining structure and pressure maintaining device

Abstract

The utility model relates to the field of battery cell module pressure maintaining, in particular to a low-voltage module pressure maintaining structure and a pressure maintaining device, the low-voltage module pressure maintaining structure comprises a bottom plate, the bottom plate is provided with a pushing device and two positioning assemblies, and the two positioning assemblies are arranged at intervals to form a clamping cavity for clamping a battery cell module; the clamping cavity and the bottom plate are arranged at an interval; the pushing device is provided with a control unit and a U-shaped structural member, the pushing device is in driving connection with the U-shaped structural member, and the control unit is in control connection with the pushing device; the two ends of the U-shaped structural part are each provided with an abutting and pushing part, and the two abutting and pushing parts are arranged opposite to the two positioning assemblies correspondingly. The control unit can adjust the magnitude of pressure applied by the abutting and pushing assembly to the battery cell module, and the gap is formed between the two positioning assemblies, so that an operator can wrap the battery cell module on the positioning assemblies with a blue mold, the assembling time of the battery cell module is shortened, and the assembling efficiency of a battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the field of battery module pressure maintenance, in particular to a low-voltage module pressure maintenance structure and a pressure maintenance device. Background Art

[0002] Maintaining the pressure of the battery cell module can effectively reduce the space occupied by the battery cell module. By squeezing the battery cells, the gap between adjacent battery cells can be reduced, making adjacent battery cells fit more closely.

[0003] However, since the existing pressure-holding tooling is designed based on a single battery cell module, the pressure-holding pressure cannot be adjusted, resulting in the pressure-holding tooling being able to be used only for the corresponding designed battery cell module; moreover, since the pressure-holding operation requires clamping the battery cell module for a long time, the laminating operation at the rear stage of the pressure-holding of the battery cell module cannot be carried out in time, resulting in low assembly efficiency of the battery cell module.

[0004] Therefore, there is an urgent need for a technical solution to solve the technical problem that the current pressure-holding tooling cannot be applied to different types of battery cell modules and the laminating operation cannot be carried out in a timely manner. Utility Model Content

[0005] The purpose of the utility model is to provide a low-voltage module pressure-maintaining structure and a pressure-maintaining device to address the technical problems that the current pressure-maintaining tooling cannot be applied to different types of battery core modules and the laminating operation cannot be carried out in a timely manner.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A low-voltage module pressure-maintaining structure comprises a bottom plate, the bottom plate is provided with a push device and two positioning components, the two positioning components are spaced apart to form a holding cavity for holding a battery core module; the holding cavity is spaced apart from the bottom plate;

[0008] The push device is provided with a control unit and a U-shaped structure, the push device is driven to connect to the U-shaped structure, and the control unit controls the connection to the push device;

[0009] Both ends of the U-shaped structural member are provided with push members, and the two push members are respectively arranged opposite to the two positioning components.

[0010] The utility model discloses a low-voltage module pressure-maintaining structure, in which a holding cavity of a cell module is formed by two positioning components arranged at intervals, the cell module can be limitedly arranged in the holding cavity, and a pushing device drives a pushing member to apply pressure to the cell module, so that the cell module can reach a pressure-maintaining condition; the holding cavity is arranged at intervals from a bottom plate, and after the cell module is installed in the holding cavity, a gap is formed between the cell module and the bottom plate for coating operation, and a channel for blue film to pass through is arranged in the middle of the U-shaped structural member, so that the blue film can be arranged around the outer wall of the cell module; the two pushing members are respectively opposite to the two positioning components The arrangement enables the push member to apply force to the battery cell module at two different positions, ensuring that the battery cell module is evenly stressed, thereby ensuring the pressure-maintaining effect of the battery cell module; when using a low-voltage module pressure-maintaining structure of the utility model to perform pressure-maintaining operations, the holding cavity holds the battery cell module to keep the battery cell module away from the bottom plate, so that a gap is formed between the battery cell module and the bottom plate, and while the U-shaped structural member applies pressure-maintaining pressure to the battery cell module, the blue film can pass through the channel in the middle of the U-shaped structural member, and the two positioning components arranged at intervals expose the outer wall of the battery cell module, so that the battery cell module can be covered by the blue film.

[0011] As a preferred solution of the utility model, the bottom plate is provided with a guide device, and the guide device is connected to the U-shaped structure to avoid the position deviation of the U-shaped structure and ensure that the push member applies pressure to the battery module at the correct position; the guide device is preferably provided with two guide devices, and the two guide devices are respectively located on the opposite sides of the U-shaped structure.

[0012] As a preferred solution of the utility model, the guide device includes a slider, a guide rod and a support seat, the support seat is connected to the bottom plate, the guide rod is connected to the support seat, the slider is slidably connected to the guide rod, and the slider is connected to the U-shaped structure. The support seat supports the guide rod so that the guide rod is parallel to the pushing direction of the push device, which is convenient for guiding the U-shaped structure. The slider is a rectangular block, and the guide rod passes through the rectangular block from the middle of the rectangular block, so that the rectangular block can slide smoothly on the guide rod.

[0013] As a preferred solution of the utility model, the positioning assembly is provided with a limit block, and the limit block can abut against the slider. The limit block abuts against the slider, thereby limiting the maximum displacement of the push member, and preventing the push member from exerting excessive pressure on the battery module.

[0014] As a preferred solution of the utility model, the support seat is provided with a hydraulic buffer, and the hydraulic buffer can abut against the U-shaped structure. The hydraulic buffer can prevent the U-shaped structure from hitting the support seat and causing position deviation when it retracts; the hydraulic buffer can buffer the force on the U-shaped structure.

[0015] As a preferred solution of the utility model, the U-shaped structural member is provided with a force measuring device, and the force measuring device includes a mechanical sensor and a floating joint, the mechanical sensor is connected to the floating joint, the mechanical sensor is connected to the U-shaped structural member, and the floating joint is connected to the push device. The floating joint can buffer the pressure of the push mechanism on the battery module, so that the force on the battery module changes linearly, and the measurement data of the mechanical sensor is more stable; the mechanical sensor can measure the pressure applied to the battery module in real time, so that the operator can adjust the pressure on the battery module in time according to the pressure data.

[0016] As a preferred solution of the utility model, the positioning assembly includes a base, a first clamping block and a second clamping block, the first clamping block and the second clamping block are both connected to the base, the first clamping block is used to abut the bottom of the battery cell module, and the second clamping block is used to abut the side wall of the battery cell module, the base is connected to the bottom plate, and the first clamping block is spaced apart from the bottom plate; the second clamping block includes an L-shaped bending piece. The bottom of the battery cell is supported by the first holding block, so that a gap is left between the bottom of the battery cell module and the bottom plate, so that the blue film can be wrapped around the battery cell module through the gap during the laminating operation; the second holding block is an L-shaped structural member, and the L-shaped structural member abuts against the side of the battery cell module, and the first holding block abuts against the bottom of the battery cell module, thereby limiting the position of the battery cell module; the two positioning components arranged at intervals form a rectangular holding cavity, and the top side of the holding cavity and the side close to the U-shaped structural member can be used to put in or take out the battery cell module; the height of the L-shaped structural member is equal to the height of the battery cell module, and the pushing member is a plate-like structural member, and the height of the plate-like structural member is equal to the height of the battery cell module.

[0017] As a preferred solution of the utility model, the push device includes a driving gas circuit and a cylinder, the driving gas circuit is connected to the cylinder, and the output end of the cylinder is connected to the middle of the U-shaped structure. The cylinder drives the U-shaped structure to apply pressure to the battery module; the driving gas circuit can pass driving gas into the cylinder to make the cylinder move; the output end of the cylinder is connected to the middle of the U-shaped structure, so that the push members at both ends of the U-shaped structure apply equal pressure to the battery module.

[0018] As a preferred solution of the utility model, the control unit includes a pressure regulating valve and a manual valve, both of which are connected to the driving air circuit, and the manual valve is connected to the bottom plate. The pressure regulating valve can adjust the thrust applied by the cylinder to the U-shaped structural member, so that the pressure holding pressure of the battery module can be controlled; the manual valve can quickly switch the working state of the cylinder, which is convenient for operators to operate.

[0019] A pressure maintaining device, characterized in that it includes a support frame and a plurality of protective nets, and also includes the above-mentioned low-pressure module pressure maintaining structure, wherein the support frame and the protective nets are both connected to the bottom plate.

[0020] The utility model provides a pressure-maintaining device, which surrounds a push-pushing device and a positioning assembly through a plurality of protective nets, thereby preventing the battery cells from splashing and ensuring the safety of operators and the working environment; a support frame is provided to support the bottom plate to a suitable height for performing pressure-maintaining operations on the battery cell module, which is convenient for operators to operate.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] 1. A low-voltage module pressure-maintaining structure of the utility model forms a holding cavity of a cell module by spacing two positioning components. The cell module can be limitedly set in the holding cavity. The pushing device drives the pushing member to pressurize the cell module so that the cell module can reach the pressure-maintaining condition. The holding cavity and the bottom plate are spaced apart. After the cell module is installed in the holding cavity, a gap is formed between the cell module and the bottom plate for film coating. A channel for the blue film to pass through is provided in the middle of the U-shaped structural member, so that the blue film can be arranged around the outer wall of the cell module. The two pushing members are respectively connected to the two positioning components. The setting enables the push member to apply force to the battery cell module at two different positions to ensure that the battery cell module is evenly stressed, thereby ensuring the pressure-maintaining effect of the battery cell module; when using a low-voltage module pressure-maintaining structure of the utility model to perform pressure-maintaining operation, the holding cavity holds the battery cell module to keep the battery cell module away from the bottom plate, so that a gap is formed between the battery cell module and the bottom plate, and while the U-shaped structural member applies pressure-maintaining pressure to the battery cell module, the blue film can pass through the channel in the middle of the U-shaped structural member, and the two positioning components arranged at intervals expose the outer wall of the battery cell module, so that the battery cell module can be covered by the blue film;

[0023] 2. The utility model provides a low-voltage module pressure-maintaining structure, which is easy to manufacture and convenient to use. The control unit adjusts the pressure applied by the push component to the battery module, so that the low-voltage module pressure-maintaining structure can adapt to the pressure-maintaining operation of different types of battery modules; two positioning components jointly clamp the battery, and a gap is set between the two positioning components. The battery module is circumferentially exposed through the gap and the U-shaped structural member, which is convenient for laminating operation, so that the laminating operation and the pressure-maintaining operation can be carried out at the same time, shortening the assembly time of the battery module, improving the assembly efficiency of the battery pack, and having good economic value and practical value;

[0024] 3. A pressure-maintaining device of the utility model surrounds the push device and the positioning assembly through a plurality of protective nets, which can prevent the battery cells from splashing and ensure the safety of the operators and the working environment; a support frame is provided to support the bottom plate to a suitable height for the pressure-maintaining operation of the battery cell module, which is convenient for the operators to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic structural diagram of a low-pressure module pressure-maintaining structure of Example 1;

[0026] Figure 2 is a schematic structural diagram of a U-shaped structural member of Example 1;

[0027] Figure 3 is a schematic structural diagram of the guide device of Example 1;

[0028] Figure 4 is a schematic structural diagram of the positioning assembly of Example 1;

[0029] Figure 5 It is a structural schematic diagram of a pressure maintaining device.

[0030] icon:

[0031] 1-bottom plate, 2-positioning assembly, 3-holding cavity, 4-U-shaped structural member, 6-push device, 7-push member, 8-guide device, 9-force measuring device, 10-support frame, 11-protective net, 21-base, 22-first holding block, 23-second holding block, 24-limiting block, 51-manual valve, 52-pressure regulating valve, 81-support seat, 82-guide rod, 83-slider, 84-oil pressure buffer, 91-floating joint, 92-mechanical sensor. DETAILED DESCRIPTION

[0032] The utility model is described in detail below in conjunction with the accompanying drawings.

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] Example 1

[0035] like Figure 1-Figure 5 A low-voltage module pressure-maintaining structure shown includes a bottom plate 1, the bottom plate 1 is provided with a push device 6 and two positioning components 2, the two positioning components 2 are spaced apart to form a holding cavity 3 for holding the battery cell module; the holding cavity 3 is spaced apart from the bottom plate 1;

[0036] The push device 6 is provided with a control unit and a U-shaped structure 4, the push device 6 is driven to connect to the U-shaped structure 4, and the control unit controls the connection to the push device 6;

[0037] Both ends of the U-shaped structural member 4 are provided with push members 7 , and the two push members 7 are respectively arranged opposite to the two positioning components 2 .

[0038] A holding cavity 3 of the battery cell module is formed by two positioning components 2 arranged at intervals. The battery cell module can be limitedly set in the holding cavity 3, and the pushing device 6 drives the pushing member 7 to apply pressure to the battery cell module, so that the battery cell module can reach the pressure holding condition; the holding cavity 3 and the base plate 1 are arranged at intervals. After the battery cell module is installed in the holding cavity 3, a gap for coating operation is formed between the battery cell module and the base plate 1, and a channel for the blue film to pass through is arranged in the middle of the U-shaped structural member 4, so that the blue film can be arranged around the outer wall of the battery cell module; the two pushing members 7 are respectively arranged opposite to the two positioning components 2, so that the pushing member 7 can apply force to the battery cell module at two different positions, ensuring that the battery cell module is evenly stressed, thereby ensuring the pressure holding effect of the battery cell module.

[0039] Specifically, two guide devices 8 are provided on the base plate, and the two guide devices 8 are respectively located on the opposite sides of the U-shaped structure. The guide device 8 is composed of a slider 83, a guide rod 82 and a support seat 81. The support seat 81 is fixedly connected to the base plate 1, and the guide rod 82 is connected to the support seat 81. The guide rod 82 is supported by the support seat 81 so that the guide rod 82 is parallel to the movement direction of the output end of the push device 6, thereby guiding the U-shaped structure 4. The setting of the guide rod 82 can also prevent the U-shaped structure 4 from positional displacement, thereby preventing the push member 7 from being displaced; the slider 83 is slidably connected to the guide rod 82, so that the slider 83 can slide along the axial direction of the guide rod 82, and the slider 83 is fixedly connected to the U-shaped structure 4 on the side close to the U-shaped structure 4.

[0040] Specifically, the guide rod 82 is an optical axis, the slider 83 is a rectangular block, and the guide rod 82 penetrates the slider 83 from the middle of the slider 83 , so that the slider 83 can stably slide on the guide rod 82 .

[0041] Specifically, a limit block 24 is provided on one side of the positioning assembly 2 close to the U-shaped structural member 4, so that the limit block 24 can abut against the slider 83, and the push position of the push member 7 is limited by the limit block 24 to prevent the push member 7 from excessively squeezing the battery cell module.

[0042] Specifically, the support seat 81 is provided with a hydraulic buffer 84 , and the hydraulic buffer 84 can abut against the U-shaped structural member 4 . By providing the hydraulic buffer 84 on the support seat 81 , the U-shaped structural member 4 is prevented from hitting the support seat 81 when retracting.

[0043] Specifically, the U-shaped structural member 4 is provided with a force measuring device 9, which can visualize the pressure applied by the push device 6 on the battery cell module, so that the operator can adjust the thrust of the push device 6 in time according to the actual pressure; the force measuring device 9 is composed of a mechanical sensor 92 and a floating joint 91, the mechanical sensor 92 is connected to the floating joint 91, the mechanical sensor 92 is connected to the U-shaped structural member 4, and the floating joint 91 is connected to the push device 6; the mechanical sensor 92 is used to detect the pressure applied to the battery cell module by the push device 6, and the floating joint 91 can buffer the pressure applied to the battery cell module, so that the force on the battery cell module changes linearly, and the data measured by the mechanical sensor 92 is more accurate.

[0044] Specifically, the positioning assembly 2 is composed of a base 21, a first clamping block 22 and a second clamping block 23. The first clamping block 22 and the second clamping block 23 are both connected to the base 21. The first clamping block 22 is used to abut the bottom of the battery cell module, and the second clamping block 23 is used to abut the side wall of the battery cell module. The base 21 is connected to the bottom plate 1, and the first clamping block 22 is spaced apart from the bottom plate 1. The second clamping block 23 includes an L-shaped bending piece. The bottom of the battery cell is supported by the first clamping block 22, so that a gap is left between the bottom of the battery cell module and the bottom plate 1, so that when the coating operation is performed, The blue film is wrapped around the battery cell module through intervals; the second holding block 23 is an L-shaped structural member, which abuts against the side of the battery cell module through the L-shaped structural member, and the first holding block 22 abuts against the bottom of the battery cell module, thereby limiting the battery cell module; the two positioning components 2 arranged at intervals form a rectangular holding cavity 3, and the top side of the holding cavity 3 and the side close to the U-shaped structural member 4 can be used to put in or take out the battery cell module; the height of the L-shaped structural member is equal to the height of the battery cell module, and the push member 7 is a plate-like structural member, and the height of the plate-like structural member is equal to the height of the battery cell module.

[0045] Specifically, the push device 6 includes a driving air circuit and a cylinder, the driving air circuit and the cylinder are connected, and the output end of the cylinder is connected to the middle part of the U-shaped structural member 4; the driving air circuit can provide a source of energy for the cylinder movement, so that the cylinder can drive the U-shaped structural member 4 to perform pressure maintenance operation on the battery cell module; the output end of the cylinder is connected to the middle part of the U-shaped structural member 4, so that the push members 7 arranged at both ends of the U-shaped structural member 4 exert equal force on the battery cell module, thereby ensuring that the battery cell module is subjected to balanced force.

[0046] Specifically, the control unit is composed of a pressure regulating valve 52 and a manual valve 51. The pressure regulating valve 52, the manual valve 51 and the cylinder are arranged in sequence along the air flow direction of the driving air path. The pressure regulating valve 52 adjusts the air pressure entering the cylinder, and the manual valve 51 can control the on-off state of the air source of the cylinder; the manual valve 51 is connected to the base plate 1 for easy operation by the operator.

[0047] A low-pressure module pressure-maintaining structure of the present embodiment is used. When the module is placed on two positioning components 2 according to the reference, the positioning components 2 limit the battery module; the driving air circuit is connected to the air source, the pressure regulating valve 52 is adjusted to the expected pressure value, the manual valve 51 is opened, and the output end is extended through the cylinder ventilation to drive the push member 7 on the U-shaped structural member 4 to move outward to abut against the battery module; the battery module is pressure-maintained and the pressure value on the mechanical sensor 92 is read.

[0048] Example 2

[0049] The present embodiment is a low-pressure module pressure-maintaining structure, and its structure is substantially the same as that of the first embodiment. The difference from the first embodiment is that the driving device is an electric push rod.

[0050] Specifically, the control unit is a control box, and the electric push rod is connected to the control box circuit.

[0051] The electric push rod is controlled by the control box to move, so that the electric push rod can push the U-shaped structural member 4, so that the pushing member 7 applies pressure to the battery module.

[0052] Example 3

[0053] like Figure 5 The pressure maintaining device shown includes a support frame 10 and a plurality of protection nets 11 , and also includes a low-pressure module pressure maintaining structure of Example 1 / Example 2, wherein the support frame 10 and the protection nets 11 are both connected to the base plate 1 .

[0054] Specifically, three protective nets 11 are provided to reserve some space for easy operation of the battery module.

[0055] Specifically, the bottom plate 1 is connected to the top of the support frame 10, and four guide wheels are arranged at the bottom of the support frame 10, so as to facilitate the movement of the pressure-maintaining device.

[0056] The push device 6 and the positioning assembly 2 are surrounded by a number of protective nets 11, which can prevent the battery cells from splashing and ensure the safety of the operators and the working environment; a support frame 10 is provided to support the bottom plate 1 to a suitable height for the pressure maintenance operation of the battery cell module, which is convenient for the operators to operate.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-pressure module pressure-maintaining structure, characterized in that: It comprises a bottom plate (1), the bottom plate (1) being provided with a push device (6) and two positioning components (2), the two positioning components (2) being arranged at intervals to form a holding cavity (3) for holding a battery core module; the holding cavity (3) being arranged at intervals from the bottom plate (1); The push-pushing device (6) is provided with a control unit and a U-shaped structural member (4), the push-pushing device (6) is driven to be connected to the U-shaped structural member (4), and the control unit controls the connection of the push-pushing device (6); Both ends of the U-shaped structural member (4) are provided with push members (7), and the two push members (7) are respectively arranged opposite to the two positioning assemblies (2).

2. A low-pressure module pressure-maintaining structure as claimed in claim 1, characterized in that: The bottom plate (1) is provided with a guide device (8), and the guide device (8) is connected to the U-shaped structural member (4).

3. A low-pressure module pressure-maintaining structure as claimed in claim 2, characterized in that: The guide device (8) comprises a slider (83), a guide rod (82) and a support seat (81); the support seat (81) is connected to the base plate (1); the guide rod (82) is connected to the support seat (81); the slider (83) is slidably connected to the guide rod (82); and the slider (83) is connected to the U-shaped structural member (4).

4. A low-pressure module pressure-maintaining structure as claimed in claim 3, characterized in that: The positioning assembly (2) is provided with a limit block (24), and the limit block (24) is capable of abutting against the sliding block (83).

5. A low-pressure module pressure-maintaining structure as claimed in claim 3, characterized in that: The support seat (81) is provided with an oil pressure buffer (84), and the oil pressure buffer (84) is capable of abutting against the U-shaped structural member (4).

6. A low-pressure module pressure-maintaining structure as claimed in claim 1, characterized in that: The U-shaped structural member (4) is provided with a force measuring device (9), the force measuring device (9) comprising a mechanical sensor (92) and a floating joint (91), the mechanical sensor (92) being connected to the floating joint (91), the mechanical sensor (92) being connected to the U-shaped structural member (4), and the floating joint (91) being connected to the thrust device (6).

7. A low-pressure module pressure-maintaining structure as claimed in claim 1, characterized in that: The positioning assembly (2) comprises a base (21), a first clamping block (22) and a second clamping block (23); the first clamping block (22) and the second clamping block (23) are both connected to the base (21); the first clamping block (22) is used to abut against the bottom of the battery cell module; the second clamping block (23) is used to abut against the side wall of the battery cell module; the base (21) is connected to the bottom plate (1); the first clamping block (22) and the bottom plate (1) are spaced apart; and the second clamping block (23) comprises an L-shaped bending piece.

8. A low-pressure module pressure-maintaining structure according to any one of claims 1 to 7, characterized in that: The thrust device (6) comprises a driving air circuit and a cylinder, the driving air circuit is connected to the cylinder, and the output end of the cylinder is connected to the middle part of the U-shaped structural member (4).

9. A low-pressure module pressure-maintaining structure as claimed in claim 8, characterized in that: The control unit comprises a pressure regulating valve (52) and a manual valve (51), wherein the pressure regulating valve (52) and the manual valve (51) are both connected to the driving air circuit, and the manual valve (51) is connected to the base plate (1).

10. A pressure-maintaining device, characterized in that: It comprises a support frame (10) and a plurality of protective nets (11), and also comprises a low-pressure module pressure-maintaining structure according to any one of claims 1 to 9, wherein the support frame (10) and the protective nets (11) are both connected to the bottom plate (1).

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