CN110625278A - Extrusion pressure detection device of battery module - Google Patents
Extrusion pressure detection device of battery module Download PDFInfo
- Publication number
- CN110625278A CN110625278A CN201910906699.0A CN201910906699A CN110625278A CN 110625278 A CN110625278 A CN 110625278A CN 201910906699 A CN201910906699 A CN 201910906699A CN 110625278 A CN110625278 A CN 110625278A
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- CN
- China
- Prior art keywords
- extrusion
- plate
- bottom plate
- module
- battery module
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides an extrusion pressure detection device of a battery module, which comprises a top plate, a bottom plate and an extrusion mechanism, wherein the periphery of the upper surface of the bottom plate is respectively provided with a support column, and the top of each support column is respectively connected with the top plate; the extrusion mechanism comprises a cylinder and an extrusion plate, the cylinder is arranged in the center of the upper surface of the bottom plate, and a piston of the cylinder is connected to the center of the lower surface of the extrusion plate; guide pipes are arranged around the air cylinders respectively, guide columns are arranged in the guide pipes respectively, the tops of the guide columns are connected to the lower surface of the extrusion plate, and the bottoms of the guide columns extend to the lower part of the bottom plate and are connected with a fixed plate; pressure sensors are respectively arranged on the periphery of the upper surface of the extrusion plate, and a positioning jig is connected above the pressure sensors; the lower surface of the bottom plate is respectively provided with a limiting stud towards the fixing plate, and a limiting nut is arranged on the limiting stud; the fixed plate middle part is equipped with displacement sensor towards the bottom plate, and the displacement sensor top is connected to the bottom plate lower surface, has the advantage of pressure detection, cylinder stroke spacing and the different products of adaptation.
Description
Technical Field
The invention belongs to the technical field of battery module welding, and particularly relates to an extrusion pressure detection device of a battery module.
Background
The laser welding technology has wide application field and can be applied to a plurality of fields such as automobiles, electronics and the like. In the field of new energy, laser welding is also more and more widely applied, for example, welding of a battery core pole and a pole piece and welding of a bus board and the pole piece are all laser welding. However, laser welding has high requirements for focal length change and the degree of fit between the cell post and the pole piece, and poor welding is caused if a gap is generated due to a height difference between the cell post and the pole piece when the pressure is too low in the pressing process; if too big damage electric core utmost point post and pole piece easily again of pressure, consequently need the extrusion pressure detection device of a battery module.
Disclosure of Invention
The invention aims to provide a device for detecting the extrusion pressure of a battery module, which is used for detecting and controlling the pressure between a battery core pole column and a pole piece in the welding process of the battery module and ensuring the welding effect of the battery module.
The invention provides the following technical scheme:
the extrusion pressure detection device of the battery module comprises a top plate, a bottom plate and an extrusion mechanism, wherein support columns are arranged on the periphery of the upper surface of the bottom plate respectively, and the tops of the support columns are connected with the top plate respectively; the extrusion mechanism comprises an air cylinder and an extrusion plate, the air cylinder is arranged in the center of the upper surface of the bottom plate, and a piston of the air cylinder is connected to the center of the lower surface of the extrusion plate; guide pipes are arranged around the air cylinder respectively, guide columns are arranged in the guide pipes respectively, the tops of the guide columns are connected to the lower surface of the extrusion plate, the bottoms of the guide columns extend to the lower part of the bottom plate and are connected with fixed plates, and two guide columns are connected to each fixed plate respectively; pressure sensors are respectively arranged on the periphery of the upper surface of the extrusion plate, and positioning jigs are connected above the pressure sensors and used for positioning and assembling the battery module; the lower surface of the bottom plate is respectively provided with a limiting stud towards the fixing plate, a limiting nut is arranged on the limiting stud, and a through hole is formed in the fixing plate corresponding to the limiting stud; the middle part of the fixing plate faces the bottom plate and is provided with a displacement sensor, and the top of the displacement sensor is connected to the lower surface of the bottom plate.
Further, extrusion mechanism still includes controlling means, controlling means includes treater, comparator, pressure regulating module, display module, storage module, four pressure sensor is connected to four respectively the input of comparator, the output of pressure regulating module is connected to respectively the input of comparator, displacement sensor and four the output of comparator is connected to respectively the input serial ports of treater, the output serial ports of treater is connected to display module and storage module respectively.
Further, the treater is STM32 singlechip, the display module is used for showing displacement sensor's distance data, the storage module is used for saving displacement sensor's distance data.
Furthermore, the pressure sensor and the comparator, the displacement sensor and the processor are provided with an acquisition module, and the acquisition module comprises a filtering and amplifying circuit and an AD conversion module.
Furthermore, the limiting stud is provided with scale marks.
The invention has the beneficial effects that:
according to the extrusion pressure detection device for the battery module, the extrusion plate is pushed by the guide pipe and the guide column auxiliary cylinder, so that the extrusion pressure is stable and cannot deviate; the required extrusion pressure of the battery module can be preset by the pressure regulating module before extrusion, in the extrusion process, when the extrusion pressure detected by the pressure sensor reaches a preset value, the stroke distance of the air cylinder is recorded by the displacement sensor, then the stroke limit is carried out by the limit stud and the limit nut, in the subsequent extrusion process, the damage of the battery module caused by overlarge extrusion can be prevented, and the extrusion tightness can be ensured; meanwhile, for battery modules with different sizes, the readjustment limit nut and the limit stud can be obtained only by repeating the steps, and the adaptability is good.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the control device connections;
labeled as: 1. the battery module comprises a top plate, a bottom plate, a support column 21, an extrusion mechanism 3, an air cylinder 31, an extrusion plate 32, a guide pipe 33, a guide column 34, a fixing plate 35, a pressure sensor 36, a positioning jig 37, a limiting stud 4, a limiting nut 41, a displacement sensor 42 and a battery module 5.
Detailed Description
As shown in fig. 1, an extrusion pressure detection device for a battery module comprises a top plate 1, a bottom plate 2 and an extrusion mechanism 3, wherein pillars 21 are respectively arranged on the periphery of the upper surface of the bottom plate 2, and the tops of the pillars 21 are respectively connected with the top plate 1; the extrusion mechanism 3 comprises a cylinder 31 and an extrusion plate 32, the cylinder 31 is arranged in the center of the upper surface of the bottom plate 2, and a piston of the cylinder 31 is connected to the center of the lower surface of the extrusion plate 32; guide pipes 33 are respectively arranged on the periphery of the cylinder 31, guide posts 34 are respectively arranged in the guide pipes 33, the tops of the guide posts 34 are connected to the lower surface of the extrusion plate 32, the bottoms of the guide posts 34 extend to the lower part of the bottom plate 2 and are connected with fixing plates 35, and two guide posts 34 are respectively connected to each fixing plate 35; pressure sensors 36 are respectively arranged on the periphery of the upper surface of the extrusion plate 32, a positioning jig 37 is connected above the pressure sensors 36, and the positioning jig 37 is used for positioning and assembling the battery module 5; the lower surface of the bottom plate 2 is respectively provided with a limiting stud 4 towards the fixing plate 35, the limiting stud 4 is provided with scale marks, a limiting nut 41 is configured on the limiting stud 4, and a through hole is formed in the fixing plate 35 corresponding to the limiting stud 4; the middle of the fixing plate 35 is provided with a displacement sensor 42 toward the bottom plate 2, and the top of the displacement sensor 42 is connected to the lower surface of the bottom plate 2.
As shown in fig. 2, the squeezing mechanism 3 further comprises a control device, the control device comprises a processor, a comparator, a pressure regulating module, a display module, a storage module, four pressure sensors 36 are respectively connected to the input ends of the four comparators, the output ends of the pressure regulating module are respectively connected to the input ends of the comparators, the output ends of the displacement sensors 42 and the four comparators are respectively connected to the input serial ports of the processor, the output serial ports of the processor are respectively connected to the display module and the storage module, the processor is an STM32 single chip microcomputer, the display module is used for displaying the distance data of the displacement sensors 42, the storage module is used for storing the distance data of the displacement sensors 42, the pressure sensors 36 and the comparators, a collecting module is arranged between the displacement sensors 42 and the processor, and the collecting module comprises a filtering amplifying circuit and an.
The working mode of the specific embodiment is as follows:
the battery module 5 to be processed is configured on the positioning jig 37, then the air cylinder 31 is driven to act, and under the pushing of the air cylinder 31, the extrusion plate 32 pushes the pressure sensor 36 and the positioning jig 37 upwards and extrudes the battery module 5 on the top plate 1; the voltage signal input into the comparator can be adjusted through the voltage adjusting module, the voltage signal can be set according to the required pressure value, when the four pressure sensors 36 have signals larger than the voltage signal in the extrusion process, the comparator outputs a high level signal, the processor receives the high level signal, reads the displacement distance signal of the displacement sensor 42, stores the displacement distance signal into the storage module and simultaneously displays the displacement distance signal through the display module, the worker obtains the displacement distance signal of the displacement sensor 42 and then adjusts the limiting nut 41 on the limiting stud 4 to enable the displacement distance signal to be matched with the displacement distance signal, and then the air cylinder 31 can be limited by the limiting nut 41 when reaching the limit extrusion pressure position in the working process, so that the battery module 5 is prevented from being crushed; if the battery modules 5 of other sizes are replaced, the above-described steps need only be repeated.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The extrusion pressure detection device of the battery module is characterized by comprising a top plate, a bottom plate and an extrusion mechanism, wherein pillars are respectively arranged on the periphery of the upper surface of the bottom plate, and the tops of the pillars are respectively connected with the top plate; the extrusion mechanism comprises an air cylinder and an extrusion plate, the air cylinder is arranged in the center of the upper surface of the bottom plate, and a piston of the air cylinder is connected to the center of the lower surface of the extrusion plate; guide pipes are arranged around the air cylinder respectively, guide columns are arranged in the guide pipes respectively, the tops of the guide columns are connected to the lower surface of the extrusion plate, the bottoms of the guide columns extend to the lower part of the bottom plate and are connected with fixed plates, and two guide columns are connected to each fixed plate respectively; pressure sensors are respectively arranged on the periphery of the upper surface of the extrusion plate, and positioning jigs are connected above the pressure sensors and used for positioning and assembling the battery module; the lower surface of the bottom plate is respectively provided with a limiting stud towards the fixing plate, a limiting nut is arranged on the limiting stud, and a through hole is formed in the fixing plate corresponding to the limiting stud; the middle part of the fixing plate faces the bottom plate and is provided with a displacement sensor, and the top of the displacement sensor is connected to the lower surface of the bottom plate.
2. The extrusion pressure detection device of the battery module as recited in claim 1, wherein the extrusion mechanism further comprises a control device, the control device comprises a processor, a comparator, a pressure regulating module, a display module and a storage module, the four pressure sensors are respectively connected to the four input ends of the comparator, the output end of the pressure regulating module is respectively connected to the input end of the comparator, the output ends of the displacement sensor and the four comparators are respectively connected to the input serial port of the processor, and the output serial port of the processor is respectively connected to the display module and the storage module.
3. The extrusion pressure detection device of a battery module as claimed in claim 2, wherein the processor is an STM32 single chip microcomputer, the display module is used for displaying the distance data of the displacement sensor, and the storage module is used for storing the distance data of the displacement sensor.
4. The extrusion pressure detection device of a battery module as claimed in claim 2, wherein collection modules are respectively disposed between the pressure sensor and the comparator, between the displacement sensor and the processor, and each collection module comprises a filter amplifying circuit and an AD conversion module.
5. The extrusion pressure detection device of a battery module as claimed in claim 1, wherein the limit stud is provided with scale marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910906699.0A CN110625278A (en) | 2019-09-24 | 2019-09-24 | Extrusion pressure detection device of battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910906699.0A CN110625278A (en) | 2019-09-24 | 2019-09-24 | Extrusion pressure detection device of battery module |
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| Publication Number | Publication Date |
|---|---|
| CN110625278A true CN110625278A (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910906699.0A Pending CN110625278A (en) | 2019-09-24 | 2019-09-24 | Extrusion pressure detection device of battery module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948039A (en) * | 2020-06-30 | 2020-11-17 | 蜂巢能源科技有限公司 | Battery module testing device |
| WO2023050859A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery component assembling method, clamp and welding device |
-
2019
- 2019-09-24 CN CN201910906699.0A patent/CN110625278A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948039A (en) * | 2020-06-30 | 2020-11-17 | 蜂巢能源科技有限公司 | Battery module testing device |
| WO2023050859A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery component assembling method, clamp and welding device |
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