CN216928664U - Battery module stacking tool and battery module stacking equipment - Google Patents
Battery module stacking tool and battery module stacking equipment Download PDFInfo
- Publication number
- CN216928664U CN216928664U CN202220040362.3U CN202220040362U CN216928664U CN 216928664 U CN216928664 U CN 216928664U CN 202220040362 U CN202220040362 U CN 202220040362U CN 216928664 U CN216928664 U CN 216928664U
- Authority
- CN
- China
- Prior art keywords
- battery module
- battery
- positioning mechanism
- end plate
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The application provides a frock is piled up to battery module and battery module piles up equipment, and wherein, the battery module piles up the frock and includes positioning platform and end plate closing device, and first positioning mechanism and second positioning mechanism can be along with end plate closing device extrusion battery module's end plate and relative movement. In the process of extruding the battery and the end plate, the battery is located on the positioning platform, the bottom surface of the end plate is lower than the bottom surface of the battery, the battery and the end plate are extruded under the action of the end plate pressing device, and the first positioning mechanism and the second positioning mechanism move relatively along with the pressing of the battery and the end plate, so that the assembly precision of the battery module with the bottom surface of the end plate lower than the bottom surface of the battery is ensured, and the qualified rate of products is improved.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery module stacking tool and battery module stacking equipment.
Background
For vehicles, the energy density and the space utilization rate of the battery module play a crucial role in the performance of the whole vehicle. Because electric vehicle's loading space is limited, there is special requirement to battery module's size and group mode, battery module overall dimension's requirement when guaranteeing battery regularity, the utmost point post plane degree of battery and guaranteeing curb plate and end plate and weld if needing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery module that can realize that the bottom surface of end plate is less than the equipment of piling up frock and battery module of the bottom surface of battery piles up equipment.
In order to achieve the above object, an embodiment of the first aspect of the present application provides a battery module stacking tool, including: the positioning platform comprises a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism can move relatively along a first direction, and the positioning platform is used for supporting the battery module; and the first positioning mechanism and the second positioning mechanism can move relatively along with the pressing of the end plate pressing device on the end plate of the battery module.
Compared with the prior art, the technical scheme has the following advantages:
in the process of extruding the battery and the end plate, the battery is located on the positioning platform, the bottom surface of the end plate is lower than the bottom surface of the battery, the battery and the end plate are extruded under the action of the end plate pressing device, and the first positioning mechanism and the second positioning mechanism move relatively along with the pressing of the battery and the end plate, so that the assembly precision of the battery module with the bottom surface of the end plate lower than the bottom surface of the battery is ensured, and the qualified rate of products is improved.
An embodiment of the second aspect of the present application provides a battery module stacking apparatus, which includes the above battery module stacking tool.
Compared with the prior art, the technical scheme has the following advantages:
the battery module with the bottom surface lower than that of the battery is assembled on the bottom surface of the end plate, and the positioning accuracy of the end plate and the battery is guaranteed, so that the assembling accuracy of the battery module is guaranteed, and the qualified rate of products is improved.
Drawings
The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application. Wherein:
fig. 1 is a schematic perspective view of a battery module stacking tool according to the present application;
fig. 2 is a schematic top view of the battery module stacking tool shown in fig. 1;
fig. 3 is a partial structural view of the battery module stacking tool shown in fig. 1;
FIG. 4 is an enlarged view of the portion A of FIG. 3;
FIG. 5 is a schematic diagram of another state of the structure shown in FIG. 4;
fig. 6 is a partial schematic structural view of another embodiment of a battery module stacking tool according to the present application;
FIG. 7 is a schematic illustration in partial cross-sectional configuration of the first embodiment of the configuration shown in FIG. 3;
FIG. 8 is a schematic illustration in partial cross-sectional view of a second embodiment of the structure shown in FIG. 3;
Fig. 9 is a schematic view, partly in section, of a third embodiment of the structure shown in fig. 3.
The reference numbers illustrate:
10. positioning a platform; 20. a first positioning mechanism; 21. a slot; 22. a guide support; 23. a slideway; 24. a main supporting section; 25. a sub-support section; 30. a second positioning mechanism; 31. a first support section; 32. a second support portion; 33. a step; 34. a second slide rail; 35. a side surface; 40. a pressing device; 50. a side plate pressing device; 60. an end plate pressing device; 70. a support plate; 80. a first slide rail; 90. and (5) initially fixing the device.
Detailed Description
The present application is described in further detail below with reference to the figures and examples. The features and advantages of the present application will become more apparent from the description.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other. The following discussion provides a number of embodiments of the application. While each embodiment represents a single combination of applications, the various embodiments of the disclosure may be substituted or combined in any combination, and thus, the disclosure is intended to include all possible combinations of the same and/or different embodiments of what is described. Thus, if one embodiment comprises A, B, C and another embodiment comprises a combination of B and D, then this application should also be considered to include an embodiment that includes A, B, C, D of one or more of all other possible combinations, although this embodiment may not be explicitly recited in the text below. In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 3, an embodiment of the first aspect of the present application provides a battery module stacking tool, including: the platform 10 is positioned.
As shown in fig. 3 to 5, the positioning platform 10 includes a first positioning mechanism 20 and a second positioning mechanism 30, the first positioning mechanism 20 and the second positioning mechanism 30 can move relatively along a first direction F1, and the positioning platform 10 is used for supporting the battery module.
As shown in fig. 2, the battery module stacking tool further includes a pressing device 40, a side plate pressing device 50, and an end plate pressing device 60. The first positioning mechanism 20 and the second positioning mechanism 30 can move relatively as the end plate pressing device 60 presses the end plate of the battery module. In one embodiment of the present application, a battery module stacking tool includes: two end plate pressing devices 60, wherein the two end plate pressing devices 60 are symmetrically arranged on two sides of the positioning platform 10 relative to a second center line L1 arranged along a second direction F2, and the first direction F1 is perpendicular to the second direction F2. One of the two end plate pressing devices 60 is fixed to confirm the initial positioning position of the battery module, and the other end plate pressing device 60 extrudes the stacked batteries and end plates through the power cylinder (the power cylinder is a stroke-adjustable cylinder), so that the overall length of the stacked battery modules is accurately controlled. The end plate pressing device 60 may also press the stacked cells and the end plates by a hydraulic cylinder, which is not limited in the present application. Meanwhile, the output force value of the power cylinder is displayed through the pressure sensor, and the output force of the power cylinder can be controlled through the air pressure regulating valve. In a specific example of the present application, the first direction F1 is a length direction of the battery module, and the second direction F2 is a width direction of the battery module.
As shown in fig. 2, in one embodiment of the present application, a battery module stacking apparatus includes: two side plate pressing means 50, the two side plate pressing means 50 being symmetrically disposed on both sides of the positioning platform 10 with respect to a second center line L2 disposed in the first direction F1. The two side plate pressing devices 50 extrude the stacked batteries and the side plates through power cylinders (the power cylinders comprise power cylinders or hydraulic cylinders, the power cylinders are stroke-adjustable cylinders, and the hydraulic cylinders are stroke-adjustable hydraulic cylinders), so that the overall width and the relative positions of the assembled battery modules are accurately controlled. The diameters of the power cylinders of the two side plate pressing devices 50 are different, so that the relative position of the stacked batteries after the width of the batteries is ensured, specifically, the side plate pressing device on the side with the smaller cylinder diameter (with smaller driving force) moves to press the batteries, and the side plate pressing device on the side with the larger cylinder diameter (with enough driving force) does not move to position the batteries, so that the relative position of the stacked batteries after the width of the batteries is ensured.
As shown in fig. 1 and 2, when the battery modules are stacked, the pressing device 40 is located above the positioning platform 10 and is used for pressing against the top of the battery modules, and the pressing device 40 ensures the positioning accuracy of the battery modules through the cooperation with the positioning platform 10.
The main functions of the pressing device 40, the side plate pressing device 50 and the end plate pressing device 60 are: the width dimension, the length dimension and the flatness of the top of the battery module after the battery module is stacked are controlled, so that the relative position relation between the end plate and the side plate is ensured in the welding process.
In the assembling process of battery module, need to pile up the battery, curb plate and end plate are installed and are piled up the frock at battery module, because there is the clearance between the battery that piles up or need apply certain pretightning force between the battery, accessible end plate closing device compresses tightly the battery that piles up, at the in-process that the battery compressed tightly, battery and end plate can take place to remove, lead to taking place the dislocation between battery and the end plate easily, lead to the location of battery and end plate not accurate, influence the qualification rate of battery module.
The utility model provides a frock is piled up to battery module, end plate closing device installs battery and end plate on the locating platform through initial pretightning force, at the in-process of extrusion battery and end plate, the battery is located the locating platform, the bottom surface of end plate is less than the bottom surface of battery, under end plate closing device's effect, battery and end plate are extrudeed, along with compressing tightly and relative motion of battery and end plate between first positioning mechanism and the second positioning mechanism, thereby the bottom surface of having guaranteed the end plate is less than the equipment precision of the battery module of the bottom surface of battery, the qualified yield of product has been improved.
As shown in fig. 4 and 5, in one embodiment of the present application, the second positioning mechanism 30 includes a first support portion 31 and a second support portion 32.
The first support part 31 is to support a battery of the battery module.
The second support part 32 serves to support the end plates of the battery modules.
The intersection of the first support part 31 and the second support part 32 forms a step 33, and the height of the first support part 31 is greater than that of the second support part 32.
When the bottom of the end plate is lower than the bottom of the battery, the battery is supported on the first supporting part 31 through the step 33 between the first supporting part 31 and the second supporting part 32, the end plate is supported on the second supporting part 32 and is abutted against and pressed on the step 33 (the side surface of the first supporting part 31), in the process of pressing the battery, the end plate drives the second positioning mechanism 30 to move relative to the first positioning mechanism 20 through friction force and/or abutting pressure between the end plate and the first supporting part 31, and due to the limiting effect of the step, the end plate cannot move relative to the second positioning mechanism in the pressing process, so that the assembly of the battery module with the bottom surface of the end plate lower than the bottom surface of the battery is completed, the positioning accuracy of the end plate and the battery is ensured, the assembly accuracy of the battery module is further ensured, and the qualified yield of the product is improved.
As shown in fig. 6, in an embodiment of the present application, the battery module stacking tool further includes an initial fixing device 90, the initial fixing device 90 is disposed on one side of the second positioning mechanism 30, the battery is mounted on the second positioning mechanism 30 during the process of pressing the battery and the end plate, the end plate is mounted on the initial fixing device 90, and the end plate is pressed against the side surface 35 of the second positioning mechanism 30, at this time, the bottom surface of the end plate is lower than the bottom surface of the battery, the battery and the end plate are pressed under the action of the end plate pressing device, the end plate drives the second positioning mechanism 30 to move relative to the first positioning mechanism through the pressing force between the end plate and the second positioning mechanism 30, due to the restriction of the second positioning mechanism 30, the end plate does not move relative to the positioning platform during the pressing process, the positioning accuracy of the end plate and the battery is ensured, thereby ensuring the assembly accuracy of the battery module in which the bottom surface of the end plate is lower than the bottom surface of the battery, the qualified rate of the product is improved.
As shown in fig. 1 to 3, in one embodiment of the present application, the battery module stacking tool further includes a support plate 70.
The first positioning mechanism 20 is fixed to the support plate 70.
In the process of battery compaction, one end plate of two end plates keeps motionless through initial positioning mechanism, consequently, it is less to guarantee to remove at the extrusion in-process with the battery of motionless end plate contact, in order to guarantee the positioning accuracy of end plate and battery, consequently, first positioning mechanism 20 is fixed and is kept motionless in backup pad 70, it is less to make the battery that supports on first positioning mechanism 20 remove at the extrusion in-process, the positioning accuracy of end plate and battery has been guaranteed, thereby the assembly precision of battery module has been guaranteed, the qualification rate of product has been improved.
As shown in fig. 3 and 7, in an embodiment of the present application, a first slide rail 80 is disposed on the supporting plate 70, the second positioning mechanism 30 is slidably mounted on the first slide rail 80, and the second positioning mechanism 30 can slide along the first slide rail 80, so that the second positioning mechanism 30 can move along the first direction F1.
The first slide rail 80 supports the second positioning mechanism 30, and the battery and the end plate can be effectively prevented from being deviated in the height direction under the action of the pressing device 40, so that the positioning accuracy of the end plate and the battery is ensured, the assembly accuracy of the battery module is ensured, and the qualified rate of products is improved.
As shown in fig. 4 and 5, in one embodiment of the present application, the first supporting surface of the first positioning mechanism 20 and the second supporting surface of the first supporting portion 31 are located in the same plane.
The first supporting surface and the second supporting surface jointly form a supporting surface for supporting the battery, the battery can be well supported in the moving process of the second positioning mechanism 30, the deviation of the battery in the extrusion process is avoided, and the positioning accuracy of the battery and the end plate is guaranteed, so that the assembly accuracy of the battery module is guaranteed, and the qualified rate of products is improved.
As shown in fig. 4 and 5, in one embodiment of the present application, the first positioning mechanism 20 includes a main supporting portion 24 and two sub-supporting portions 25, the two sub-supporting portions 25 are located on the same side of the main supporting portion 24, and a space is provided between the two sub-supporting portions 25; the main support part 24 and the two sub-support parts 25 define a slot 21, and the first support part is inserted into the slot 21 when the battery modules are stacked.
At the part that first positioning mechanism 20 and second positioning mechanism 30 overlap, vice supporting part 25 supports the both ends at the battery, second positioning mechanism 30 supports the middle part at the battery, in extrusion process, first positioning mechanism 20 that the battery received distributes at the both ends of battery evenly, second positioning mechanism 30 that the battery received distributes at the middle part of battery evenly, even the atress between battery and the locating platform is even, the condition that the battery takes place the skew in extrusion process has been avoided, the positioning accuracy of battery and end plate has been guaranteed, thereby the equipment precision of battery module has been guaranteed, the qualified yield of product has been improved.
As shown in fig. 8, in an embodiment of the present application, a plurality of guiding support members 22 are respectively disposed on two corresponding slot walls of the slot 21, and two corresponding side walls of the second positioning mechanism 30 respectively press against the plurality of guiding support members 22. In one embodiment of the present application, the guide supports 22 are balls.
The guide support member 22 plays a role in guiding and supporting the second positioning mechanism 30, and prevents the second positioning mechanism 30 from shifting in the sliding process in the second direction F2, so that the end plate and the battery are prevented from moving relatively in the pressing process, the positioning accuracy of the end plate and the battery is ensured, the assembly accuracy of the battery module is ensured, and the qualified rate of the product is improved.
As shown in fig. 9, in an embodiment of the present application, the two groove walls correspondingly disposed in the insertion groove 21 are respectively provided with a slideway 23, the two side walls correspondingly disposed in the second positioning mechanism 30 are provided with a second sliding rail 34, the two second sliding rails 34 are respectively inserted into the two slideways 23, and the second sliding rail 34 can slide in the slideways 23.
The slide 23 is located the cell wall of slot 21, second slide 34 of second positioning mechanism 30 inserts in the spout, because second slide 34 is to second positioning mechanism 30's supporting role, prevent that second positioning mechanism 30 from taking place the condition emergence of skew on second direction F2 at the slip in-process, thereby guaranteed that end plate and battery can not take place relative movement at the process that compresses tightly, the positioning accuracy of end plate and battery has been guaranteed, and then the equipment precision of having guaranteed battery module, the qualification rate of product has been improved.
In one embodiment of the present application, the third supporting surface of the second supporting portion is a rough surface. At a microscopic angle, the surface of the rough surface has small intervals and tiny peak-valley unevenness; the distance between two peaks or two valleys (the pitch of the waves) is small (below 1 mm).
Above-mentioned structure has increased the frictional force between end plate and the second supporting part, consequently, the end plate portion need break through great static frictional force and just can slide on the second supporting part, at the in-process that the battery compressed tightly, has reduced the probability that end plate and battery take place to remove for the second supporting part, has guaranteed the positioning accuracy of end plate and battery to the equipment precision of battery module has been guaranteed, has improved the qualification rate of product.
The embodiment of the second aspect of the present application provides a battery module stacking apparatus, including the above battery module stacking tool.
The application provides a battery module piles up equipment has realized that the bottom surface of end plate is less than the equipment of the battery module of the bottom surface of battery, has guaranteed the positioning accuracy of end plate and battery to guarantee the equipment precision of battery module, improved the qualified yield of product.
In the description of the present application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, it is to be noted that unless otherwise explicitly specified or limited.
In the description of the present application, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and limited. The term "plurality" means two or more unless expressly limited otherwise. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The present application has been described above in connection with preferred embodiments, which are intended to be exemplary only and illustrative only. On the basis of the above, the present application can be subjected to various substitutions and improvements, and the substitutions and the improvements are all within the protection scope of the present application.
Claims (10)
1. The utility model provides a frock is piled up to battery module which characterized in that includes:
the positioning platform comprises a first positioning mechanism and a second positioning mechanism, the first positioning mechanism and the second positioning mechanism can move relatively along a first direction, and the positioning platform is used for supporting the battery module; and
the first positioning mechanism and the second positioning mechanism can move relatively along with the end plate pressing device extruding the end plate of the battery module.
2. The battery module stacking tooling of claim 1, wherein,
the second positioning mechanism comprises a first supporting part and a second supporting part, the first supporting part is used for supporting the battery of the battery module, and the second supporting part is used for supporting the end plate of the battery module; the crossing department of first supporting part with the second supporting part forms the step, the height of first supporting part is greater than the height of second supporting part.
3. The battery module stacking tooling of claim 2, wherein,
the first positioning mechanism is fixed on the supporting plate.
4. The battery module stacking tooling of claim 3, wherein,
a first sliding rail is arranged on the supporting plate, and the second positioning mechanism is slidably mounted on the first sliding rail.
5. The battery module stacking tooling of claim 3, wherein,
the first supporting surface of the first positioning mechanism and the second supporting surface of the first supporting part are positioned in the same plane.
6. The battery module stacking tooling of claim 5, wherein,
the first positioning mechanism comprises a main supporting part and two auxiliary supporting parts, wherein the two auxiliary supporting parts are positioned on the same side of the main supporting part, and a gap is formed between the two auxiliary supporting parts;
The main supporting part and the two auxiliary supporting parts form a slot, and when the battery modules are stacked, the first supporting part is inserted into the slot.
7. The battery module stacking tooling of claim 6, wherein,
the two groove walls of the slot are respectively provided with a plurality of guiding supporting pieces, and the two side walls of the second positioning mechanism are respectively pressed on the plurality of guiding supporting pieces.
8. The battery module stacking tooling of claim 7,
the guide support is a ball.
9. The battery module stacking tooling of claim 6, wherein,
the two groove walls of the corresponding arrangement of the slot are respectively provided with a slide way, the two side walls of the corresponding arrangement of the second positioning mechanism are respectively provided with a second slide way, the two second slide ways are respectively inserted into the two slide ways, and the second slide ways can slide in the slide ways.
10. A battery module stacking apparatus comprising the battery module stacking tool according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220040362.3U CN216928664U (en) | 2022-01-07 | 2022-01-07 | Battery module stacking tool and battery module stacking equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220040362.3U CN216928664U (en) | 2022-01-07 | 2022-01-07 | Battery module stacking tool and battery module stacking equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928664U true CN216928664U (en) | 2022-07-08 |
Family
ID=82256827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220040362.3U Active CN216928664U (en) | 2022-01-07 | 2022-01-07 | Battery module stacking tool and battery module stacking equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274948A (en) * | 2023-05-17 | 2023-06-23 | 深圳市韦宏达科技有限公司 | Full-automatic demolding mechanism |
-
2022
- 2022-01-07 CN CN202220040362.3U patent/CN216928664U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274948A (en) * | 2023-05-17 | 2023-06-23 | 深圳市韦宏达科技有限公司 | Full-automatic demolding mechanism |
| CN116274948B (en) * | 2023-05-17 | 2023-08-15 | 深圳市韦宏达科技有限公司 | Full-automatic demolding mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216928664U (en) | Battery module stacking tool and battery module stacking equipment | |
| US9318730B2 (en) | Tray for holding pouch-type batteries | |
| CN110998906B (en) | Battery module and vehicle equipped with same | |
| CN105406099A (en) | Fuel Cell Stack Assembly - Datum Design For Fuel Cell Stacking And Collision Protection | |
| CN215070102U (en) | Median septum positioner and battery module rigging equipment | |
| CN111816805B (en) | Battery module for a motor vehicle and method for the production thereof | |
| CN101752593B (en) | Secondary battery, battery assembly, and vehicle equipped with the secondary battery | |
| CN110814609A (en) | Accurate welding method and device for power battery | |
| CN212967778U (en) | Battery module assembly tool | |
| CN109244519B (en) | Shell frock structure is gone into to electric core | |
| KR20180032043A (en) | Deep Drawing Apparatus for Laminated Sheet Capable of Adjusting Tension and Method for Deep Drawing Using the Same | |
| EP4389408A1 (en) | Rolling apparatus and measuring device | |
| CN212907944U (en) | Battery frame and battery module | |
| CN220172175U (en) | Cell module extrusion bundling device | |
| CN212221844U (en) | Simple storage rack | |
| CN111564653A (en) | Automatic stacking and mold-entering method for battery cells | |
| CN215680752U (en) | Square battery module positive pile tray | |
| KR20130018334A (en) | Pitch change device and pitch change method | |
| CN220821653U (en) | Battery cell pack extrusion mechanism and CTP battery pack box-in mechanism | |
| CN219497866U (en) | Outside movable extrusion device of stacking tool | |
| CN211966466U (en) | Battery module welding jig and battery module welding set | |
| CN216642793U (en) | Linear guide rail pair | |
| CN219180563U (en) | Battery module stacks extrusion device | |
| CN220592177U (en) | Battery core shell-entering press-fitting mechanism | |
| CN220811016U (en) | Pitch-variable battery cell storage device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |