CN215342694U - Hot pressing tool for battery cell - Google Patents
Hot pressing tool for battery cell Download PDFInfo
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- CN215342694U CN215342694U CN202120380114.9U CN202120380114U CN215342694U CN 215342694 U CN215342694 U CN 215342694U CN 202120380114 U CN202120380114 U CN 202120380114U CN 215342694 U CN215342694 U CN 215342694U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- 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
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Abstract
The utility model relates to the technical field of batteries, and provides a hot-pressing tool for a battery core, which comprises: a first hot pressing member having a first hot pressing groove; the second hot pressing part is provided with a second hot pressing groove, is matched with the first hot pressing part and is adjustable in height relative to the first hot pressing part; and the hot-pressing inner core is used for fixing the battery cell, is arranged on the first hot-pressing piece and is at least partially positioned in the first hot-pressing groove, or is arranged on the second hot-pressing piece and is at least partially positioned in the second hot-pressing groove. According to the embodiment of the utility model, the structural deformation of the battery cell in the process of cyclic charge and discharge is avoided, so that the lithium precipitation of the battery cell in the process of cyclic charge is prevented, the energy density of the battery cell is further improved, the cyclic service life of the battery cell is prolonged, and the structure is simpler.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a hot-pressing tool for a battery core.
Background
The lithium battery has the characteristics of high voltage, high energy density, long cycle life, no memory effect, no pollution and the like. The cylinder electricity core is the electric core structure that lithium cell trade appeared earliest, at present, in the manufacturing process of cylinder box hat full utmost point ear electricity core, the flat technology is rubbed to the electricity core after convoluteing, however the electricity core does not have the hot-pressing technology after rubbing flat, the height that leads to between the aluminium utmost point ear in the high electric core of energy density and the copper utmost point ear is generally between 1mm to 6mm, and in rubbing flat technology, the structure deformation at positive pole utmost point ear position and negative pole utmost point ear position in the electricity core can appear, lead to the electricity core to take place the structure deformation at circulation charge-discharge in-process, thereby lead to the electricity core to appear analyzing lithium at circulation charge-discharge in-process, and then influenced the energy density and the cycle life of electricity core.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the hot-pressing tool for the battery cell, which avoids structural deformation of the battery cell in the process of cyclic charging and discharging, thereby preventing lithium precipitation of the battery cell in the process of cyclic charging, further improving the energy density of the battery cell, prolonging the cyclic service life of the battery cell, and having a simpler structure.
According to the embodiment of the utility model, the hot-pressing tool for the battery cell comprises:
a first hot pressing member having a first hot pressing groove;
the second hot pressing part is provided with a second hot pressing groove, is matched with the first hot pressing part and is adjustable in height relative to the first hot pressing part, and under the condition that the first hot pressing part is matched with the second hot pressing part, the first hot pressing groove and the second hot pressing groove jointly define a hot pressing space;
and the hot-pressing inner core is used for fixing the battery cell, is arranged on the first hot-pressing piece and is at least partially positioned in the first hot-pressing groove, or is arranged on the second hot-pressing piece and is at least partially positioned in the second hot-pressing groove.
According to the hot-pressing tool for the battery cell, the battery cell is pressed in the first hot-pressing groove and the second hot-pressing groove through the mutual matching of the first hot-pressing piece and the second hot-pressing piece, the positive plate and the negative plate of the battery cell can be tightly attached into a whole, and the structural deformation of the battery cell in the cyclic charging and discharging process is avoided, so that the lithium precipitation of the battery cell in the cyclic charging process is prevented, the energy density of the battery cell is further improved, and the cycle life of the battery cell is prolonged; and, the hot pressing inner core direct mount is on first hot pressing spare or second hot pressing spare, and the structure is simpler.
According to one embodiment of the utility model, the hot pressing space is a cylindrical space.
According to one embodiment of the present invention, the first hot pressing groove and the second hot pressing groove are semi-cylindrical grooves, respectively.
According to an embodiment of the present invention, in a state where the first hot press part and the second hot press part are fitted, a central axis of the hot press core coincides with a central axis of the hot press space.
According to one embodiment of the utility model, the first hot-pressing member is provided with a first heating member for heating the first hot-pressing bath.
According to one embodiment of the utility model, the second hot-pressing member is provided with a second heating member for heating the second hot-pressing bath.
According to one embodiment of the utility model, the hot press core is provided with a third heating element arranged around the outer circumference of the hot press core.
According to one embodiment of the utility model, the inner wall of the first hot pressing groove is provided with a first insulating member, the inner wall of the second hot pressing groove is provided with a second insulating member, and the outer peripheral surface of the hot pressing core is provided with a third insulating member.
According to an embodiment of the present invention, further comprising:
a drive mechanism coupled to one of the first and second thermal presses.
According to one embodiment of the present invention, one of the first thermal press and the second thermal press is provided with a positioning projection, and the other is provided with a corresponding positioning groove.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a hot-pressing tool for a battery cell provided by the present invention;
fig. 2 is a schematic structural diagram of a cell hot press assembly provided by the present invention in a situation where a first hot press part and a second hot press part are engaged with each other.
Reference numerals:
1. a first hot press part; 11. a first hot pressing tank; 2. a second hot press part; 21. a second hot pressing tank; 3. hot pressing the inner core; 4. a drive mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, 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 embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The following describes a hot-pressing tool for a battery cell according to an embodiment of the present invention with reference to the drawings.
As shown in fig. 1 and fig. 2, the hot-pressing tool for a battery cell according to an embodiment of the present invention includes: a first hot press member 1, a second hot press member 2, and a hot press core 3.
The first hot pressed part 1 has a first hot pressing groove 11; the second thermal compression element 2 has a second thermal compression groove 21 for fitting with the first thermal compression element 1 and adjustable in height relative to the first thermal compression element 1, and the first thermal compression groove 11 and the second thermal compression groove 21 together define a thermal compression space in the state where the first thermal compression element 1 and the second thermal compression element 2 are fitted; the hot-pressing inner core 3 is used for fixing the battery cell, is mounted on the first hot-pressing member 1, and is at least partially located in the first hot-pressing groove 11, or is mounted on the second hot-pressing member 2, and is at least partially located in the second hot-pressing groove 21.
According to the hot-pressing tool for the battery cell, the battery cell is pressed in the first hot-pressing groove 11 and the second hot-pressing groove 21 through the mutual matching of the first hot-pressing piece 1 and the second hot-pressing piece 2, the positive plate and the negative plate of the battery cell can be tightly attached into a whole, and the structural deformation of the battery cell in the circulating charging and discharging process is avoided, so that the lithium precipitation of the battery cell in the circulating charging process is prevented, the energy density of the battery cell is further improved, and the circulating life of the battery cell is prolonged; and, hot pressing inner core 3 direct mount is on first hot pressing spare 1 or second hot pressing spare 2, and the structure is simpler.
According to an embodiment of the present invention, the above-described "height of the second thermal press 2 relative to the first thermal press 1 is adjustable" means that the distance between the first thermal press 1 and the second thermal press 2 in the vertical direction can be adjusted. For example, the second thermal compression element 2 is arranged corresponding to the first thermal compression element 1, the first thermal compression element 1 is fixed, and the second thermal compression element 2 is arranged above the first thermal compression element 1 in a lifting manner; or the second hot pressing part 2 is fixed, and the first hot pressing part 1 is arranged above the second hot pressing part 2 in a lifting way; of course, the first thermal compression element 1 and the second thermal compression element 2 may be provided so as to be movable up and down.
According to the embodiment of the present invention, in the case where the thermo-compression core 3 is mounted on the first thermo-compression element 1, the thermo-compression core 3 may be entirely located in the first thermo-compression groove 11, or only a part thereof may be located in the first thermo-compression groove 11; in the case where the thermo-compression core 3 is attached to the second thermo-compression element 2, the thermo-compression core 3 may be entirely located in the second thermo-compression groove 21, or only a part thereof may be located in the second thermo-compression groove 21.
In an embodiment of the utility model, the hot-pressing tool of the battery cell is used for hot-pressing the battery cell, the battery cell comprises a positive plate, a negative plate and films for connecting the positive plate and the negative plate, and the films can be adhesive-coated ceramic films. The second hot pressing member 2 is located above the first hot pressing member 1, the hot pressing core 3 is arranged on the first hot pressing member 1, the second hot pressing groove 21 is formed in the lower surface of the second hot pressing member 2, and the first hot pressing groove 11 is formed in the upper surface of the first hot pressing member 1. Before hot pressing begins, a certain distance is reserved between the second hot pressing part 2 and the first hot pressing part 1, the battery cell is firstly placed in the first hot pressing groove 11 and fixed through the hot pressing inner core 3, after hot pressing begins, the distance between the second hot pressing part 2 and the first hot pressing part 1 is adjusted, so that the second hot pressing part 2 and the first hot pressing part 1 are in contact and are matched with each other, at the moment, the battery cell is located in a hot pressing space and is pressed between the first hot pressing part 1 and the second hot pressing part 2, and under the continuous hot pressing action, the gluing ceramic film tightly attaches the positive plate and the negative plate together, so that the gap between the positive plate and the negative plate is reduced, and the structural deformation of the battery cell caused by the overlarge gap between the positive plate and the negative plate in the circulating charge and discharge process of the battery cell is avoided.
As shown in fig. 2, according to one embodiment of the present invention, in the case where the first thermal compression element 1 and the second thermal compression element 2 are mated, the first thermal compression groove 11 and the second thermal compression groove 21 together define a cylindrical hot pressing space. Like this, can adapt to the shape of cylinder electricity core, hot pressing frock is convenient carries out the hot pressing to cylinder electricity core.
As shown in fig. 1 and 2, in one embodiment of the present invention, the first heat pressing groove 11 extends along the length direction of the first heat pressing member 1, the second heat pressing groove 21 extends along the length direction of the second heat pressing member 2, and the cross-sectional shapes of the first heat pressing groove 11 and the second heat pressing groove 21 in the vertical plane are respectively circular arc shapes that fit each other, that is, the cross-section of the first heat pressing groove 11 in the vertical plane and the cross-section of the second heat pressing groove 21 in the vertical plane may be combined into a circle.
As shown in fig. 2, according to one embodiment of the present invention, the first hot-pressing groove 11 and the second hot-pressing groove 21 are semi-cylindrical grooves, respectively. Therefore, the stress of the outer surface of the battery cell in the hot pressing process is more uniform, and the hot pressing effect is improved. For example, the cross-sectional shapes of the first hot-pressing groove 11 and the second hot-pressing groove 21 in the vertical plane are respectively semicircular.
As shown in fig. 1 and 2, according to one embodiment of the present invention, with the first thermal press 1 and the second thermal press 2 mated, the central axis of the thermo-compression core 3 coincides with the central axis of the thermo-compression space. Like this, can fix electric core more steadily to can further improve the hot pressing effect of hot pressing frock. For example, the thermocompression bonding core 3 may be a cylindrical core having a size similar to that of a winding pin used in a winding process of the battery cell, and in a case where the first and second thermocompression members 1 and 2 are engaged, the battery cell is located in the thermocompression bonding space and the cylindrical core is inserted into the inside of the battery core.
According to one embodiment of the present invention, the first hot press member 1 is provided with a first heating member (not shown in the drawings) for heating the first hot press bath 11. Like this, the heating effect of first hot pressing spare 1 is better, and the hot pressing effect of hot pressing frock is better. For example, the first heating member may be a heating paint, a heating film, a heating plate, etc., and may cover the inner wall of the first hot pressing tank 11, or may be disposed inside the first hot pressing member 1 and around the inner wall of the first hot pressing tank 11. Of course, the structure and the mounting position of the first heating member are not limited thereto as long as the first hot-pressing bath 11 can be heated.
According to one embodiment of the present invention, the second hot press member 2 is provided with a second heating member (not shown in the drawings) for heating the second hot press bath 21. Like this, the heating effect of second hot pressing spare 2 is better, and the hot pressing effect of hot pressing frock is better. For example, the second heating member may be a heating paint, a heating film, a heating plate, etc., and may cover the inner wall of the second hot pressing bath 21, or may be disposed inside the second hot pressing member 2 and around the inner wall of the second hot pressing bath 21. Of course, the structure and the mounting position of the second heating member are not limited thereto as long as the second hot-pressing bath 21 can be heated.
According to one embodiment of the present invention, the hot press core 3 is provided with a third heating member (not shown in the drawings) disposed around the outer peripheral surface of the hot press core 3. Like this, the heating effect of hot pressing inner core 3 is better, and the hot pressing effect of hot pressing frock is better. For example, the third heating member may be a heating paint, a heating film, a heating plate, etc., and may cover the outer circumferential surface of the hot-pressing core 3, or may be provided inside the hot-pressing core 3. Of course, the structure and the mounting position of the third heating member are not limited thereto as long as the thermo-compression core 3 can be heated.
According to an embodiment of the present invention, the inner wall of the first hot-pressing bath 11 is provided with a first insulating member (not shown), the inner wall of the second hot-pressing bath 21 is provided with a second insulating member (not shown), and the outer circumferential surface of the hot-pressing core 3 is provided with a third insulating member (not shown). Therefore, interference to the hot pressing process of the battery cell can be prevented, and the performance of the battery cell is ensured. For example, the first insulating member, the second insulating member, and the third insulating member may be an insulating film, an insulating plate, an insulating paint, or the like. Of course, the structures of the first insulating member, the second insulating member, and the third insulating member are not limited thereto as long as they can perform an insulating function.
As shown in fig. 1, according to an embodiment of the present invention, further includes: a drive mechanism 4. The driving mechanism 4 is connected to one of the first thermal pressing member 1 and the second thermal pressing member 2. In this way, the driving mechanism 4 can control the height of one of the first thermal pressing member 1 and the second thermal pressing member 2 to be adjustable with respect to the other, and is simple in structure. For example, the driving mechanism 4 may be a cylinder, a hydraulic cylinder, a motor, etc., and the present invention is not particularly limited thereto as long as the driving mechanism 4 can perform a driving function.
According to one embodiment of the present invention, one of the first thermal press 1 and the second thermal press 2 is provided with positioning projections, and the other is provided with corresponding positioning grooves. Thus, the positioning protrusion and the positioning groove can play a positioning role, and the first hot pressing member 1 and the second hot pressing member 2 can be conveniently matched. For example, the upper surface of the first thermal pressing member 1 is provided with positioning projections, and the lower surface of the second thermal pressing member 2 is provided with corresponding positioning grooves, and the first thermal pressing member 1 and the second thermal pressing member 2 are fitted to each other with the positioning projections fitted into the positioning grooves.
The following describes a specific structure of a hot-pressing tool for a battery cell according to an embodiment of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the first thermal pressing member 1 and the second thermal pressing member 2 are thermal pressing plates, respectively, the first thermal pressing member 1 is located directly below the second thermal pressing member 2, and the first thermal pressing groove 11 is located directly below the second thermal pressing groove 21, and the first thermal pressing groove 11 and the second thermal pressing groove 21 are semi-cylindrical grooves, respectively. The driving mechanism 4 is a cylinder, and the driving end of the cylinder is connected with the upper surface of the second hot pressing part 2. The first hot pressing part 1 plays a role in supporting the battery cell, and one end of the first hot pressing part 1 is provided with a hot pressing inner core 3. The hot pressing core 3 is an elongated cylindrical stainless steel needle which is parallel to the first hot pressing member 1 and extends along the length direction of the first hot pressing groove 11, and a part of the stainless steel needle is located in the first hot pressing groove 11.
The heating temperature of the first heating member and the second heating member is 60 ° to 80 °. The first insulating member and the second insulating member are respectively a PET (polyethylene terephthalate) insulating film, the thickness of the PET insulating film is less than 100um, and the PET insulating film is respectively bonded to the first hot pressing member 1 and the second hot pressing member 2 through teflon tapes.
Before hot pressing begins, a certain distance is kept between the first hot pressing part 1 and the second hot pressing part 2, the cylindrical battery core subjected to the kneading and flattening process is placed in the first hot pressing groove 11, the stainless steel needle extends into a hole of the cylindrical battery core to fix the cylindrical battery core, after the second hot pressing part 2 is heated by the second heating part and rises to a certain temperature, the hot pressing process is started, the second hot pressing part 2 moves downwards under the driving of the cylinder, and the cylindrical battery core is hot pressed under the condition that the first hot pressing part 1 and the second hot pressing part 2 are in contact, wherein the hot pressing time range is 20 s-40 s, the hot pressing pressure range is 1.0T-4.0T, and it can be understood that hot pressing parameters can be changed according to the size of the cylindrical battery core. After the hot pressing is finished, the cylinder drives the second hot pressing part 2 to move upwards, the hot pressing process is finished, and the cylindrical battery cell after the hot pressing is taken out.
According to the hot-pressing tool for the battery cell, disclosed by the embodiment of the utility model, the cylindrical battery cell is hot-pressed to a specified size under the heating action and the pressurizing action of the first hot pressing piece 1 and the second hot pressing piece 2, and the positive plate and the negative plate of the cylindrical battery cell are tightly attached together by the gluing ceramic diaphragm, so that lithium precipitation of the cylindrical battery cell in the circulating charge and discharge process is prevented, the energy density of the cylindrical battery cell is improved, and the circulating life of the cylindrical battery cell is prolonged.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a hot pressing frock of electric core which characterized in that includes:
a first hot pressing member having a first hot pressing groove;
the second hot pressing part is provided with a second hot pressing groove, is matched with the first hot pressing part and is adjustable in height relative to the first hot pressing part, and under the condition that the first hot pressing part is matched with the second hot pressing part, the first hot pressing groove and the second hot pressing groove jointly define a hot pressing space;
the second hot pressing part is positioned above the first hot pressing part;
the hot-pressing tool further comprises a driving mechanism, the driving mechanism is connected with the second hot-pressing part, and the driving mechanism is used for driving the second hot-pressing part to ascend or descend;
the hot-pressing inner core is used for fixing the battery cell, is arranged on the first hot-pressing piece and is at least partially positioned in the first hot-pressing groove, or is arranged on the second hot-pressing piece and is at least partially positioned in the second hot-pressing groove;
the first heat press groove extends along a length direction of the first heat press member, and the second heat press groove extends along a length direction of the second heat press member.
2. The tool for hot-pressing the battery cell according to claim 1, wherein the hot-pressing space is a cylindrical space.
3. The tool for hot-pressing the battery cell according to claim 2, wherein the first hot-pressing groove and the second hot-pressing groove are semi-cylindrical grooves respectively.
4. The tool for hot-pressing the battery cell according to claim 2, wherein a central axis of the hot-pressing core coincides with a central axis of the hot-pressing space when the first hot-pressing member and the second hot-pressing member are engaged.
5. The tool for hot-pressing the battery cell according to claim 1, wherein the first hot-pressing member is provided with a first heating member for heating the first hot-pressing groove.
6. The tool for hot-pressing the battery cell according to claim 1, wherein the second hot-pressing member is provided with a second heating member for heating the second hot-pressing groove.
7. The tool for hot-pressing the battery cell according to claim 1, wherein the hot-pressing inner core is provided with a third heating member, and the third heating member is arranged around the outer peripheral surface of the hot-pressing inner core.
8. The tool for hot-pressing the battery cell according to claim 1, wherein a first insulating member is arranged on an inner wall of the first hot-pressing groove, a second insulating member is arranged on an inner wall of the second hot-pressing groove, and a third insulating member is arranged on an outer peripheral surface of the hot-pressing inner core.
9. The tool for hot-pressing the battery cell according to any one of claims 1 to 8, wherein one of the first hot-pressing member and the second hot-pressing member is provided with a positioning protrusion, and the other one of the first hot-pressing member and the second hot-pressing member is provided with a corresponding positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120380114.9U CN215342694U (en) | 2021-02-19 | 2021-02-19 | Hot pressing tool for battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120380114.9U CN215342694U (en) | 2021-02-19 | 2021-02-19 | Hot pressing tool for battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215342694U true CN215342694U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120380114.9U Active CN215342694U (en) | 2021-02-19 | 2021-02-19 | Hot pressing tool for battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215342694U (en) |
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2021
- 2021-02-19 CN CN202120380114.9U patent/CN215342694U/en active Active
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