CN109581061B - Hot-pressing resistor measuring machine for battery cell - Google Patents
Hot-pressing resistor measuring machine for battery cell Download PDFInfo
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- CN109581061B CN109581061B CN201811568812.0A CN201811568812A CN109581061B CN 109581061 B CN109581061 B CN 109581061B CN 201811568812 A CN201811568812 A CN 201811568812A CN 109581061 B CN109581061 B CN 109581061B
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- plate
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- lug
- heating copper
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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Abstract
The invention discloses a hot-pressing resistor measuring machine for an electric core, which comprises a cylinder plate and a bottom plate, wherein an upright post is connected between the cylinder plate and the bottom plate, and a pressurizing cylinder is connected on the cylinder plate; the cylinder movable rod of the pressurizing cylinder passes through the cylinder plate; the cylinder movable rod is connected with a cylinder joint; the cylinder joint is connected with a pressing plate; the bottom of the pressing plate is connected with an upper heating copper plate; an upper heating rod mounting hole for mounting a heating rod is formed in the upper heating copper plate; the bottom plate is connected with a lower heating copper plate; a lower heating rod mounting hole for mounting a heating rod is formed in the lower heating copper plate; terminal side plates are respectively connected to the left side and the right side of the pressing plate, and a lug pressing plate is connected between the two terminal side plates; a lug positioning block is arranged on the bottom plate, and a movable needle table is arranged in the lug positioning block; the movable needle table is connected with a test needle; a spring is arranged between the tab positioning block and the tab pressing plate; the invention has simple structure, can complete all work by one staff, has less operation actions, high working efficiency and stable resistance reading.
Description
Technical Field
The invention relates to the technical field of battery cell testing, in particular to a hot-pressing resistor measuring machine for a battery cell.
Background
The current method for testing the resistance of the bare cell after lamination is finished is as follows: and after the bare cell lamination is completed, the bare cell lamination is placed on a platform work table. The first operator presses the flat plate on the battery cell; and when the voltage is applied, the second operator clamps the positive electrode needle and the negative electrode needle on the resistance tester on the two positive electrodes and the negative electrodes of the battery cell respectively, and then starts a testing button on the resistance tester. After the resistance tester obtains the resistance value, a second operator records the reading. Because the resistance difference of each measurement is large, the average value is calculated after the operator tests 5 times.
The disadvantages of this method are as follows:
a. the personnel have uneven pressing force, and the fluctuation of the resistance value reading is large;
b. the environmental temperature is greatly influenced by weather, and the resistance value is also changed to a certain extent due to the temperature;
c. the number of workers is large, the labor capacity is large, the manipulations are inconsistent, and the resistance readings are different.
Disclosure of Invention
First, the technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides a thermal resistor for a battery cell.
(II) technical scheme
The hot-pressing resistor measuring machine for the battery cell comprises a cylinder plate and a bottom plate, wherein an upright post is connected between the cylinder plate and the bottom plate; the cylinder plate is connected with a pressurizing cylinder; the cylinder movable rod of the pressurizing cylinder passes through the cylinder plate; the cylinder movable rod is connected with a cylinder joint through a movable rod nut; the cylinder joint is connected with a pressing plate; the bottom of the pressing plate is connected with an upper heating copper plate; more than one upper heating rod mounting holes for mounting heating rods are formed in the upper heating copper plate; the cylinder joint connected with the pressurizing cylinder drives the pressing plate, the upper heat insulation plate and the upper heating copper plate to move up and down; the bottom plate is connected with a lower heating copper plate; more than one lower heating rod mounting holes for mounting heating rods are formed in the lower heating copper plate; the lower heating copper plate is positioned right below the upper heating copper plate; a space for placing a test cell is formed between the lower heating copper plate and the upper heating copper plate; terminal side plates are respectively connected to the left side and the right side of the pressing plate, and a lug pressing plate is connected between the two terminal side plates;
the bottom plate is provided with a tab positioning block, the tab positioning block is positioned at the side edge of the lower heating copper plate, and the tab positioning block is positioned under the tab pressing plate; a movable needle table is arranged in the lug positioning block; the movable needle platform is connected with a test needle through a connecting nut, and the upper end and the lower end of the test needle extend out of the movable needle platform; a spring is arranged between the tab positioning block and the tab pressing plate;
the test needle firstly passes through the spring and then passes through the hole of the movable needle table to form a buffering thimble structure capable of compressing and rebounding, and then is arranged in the lug positioning block; after the pressurizing cylinder is started and the lug pressing plate is driven to descend, the lug of the battery cell positioned between the lower heating copper plate and the upper heating copper plate is positioned between the test needle and the lug pressing plate, and under the combined action of the spring and the pole piece pressing plate, the lug of the battery cell is tightly contacted with the test needle, so that good contact during testing is ensured; the connecting nut is locked on the thread of the test needle, and the locking position is adjusted according to the ascending and descending range of the test needle; the threaded end parts of the test needles are clamped by tweezers of the resistance tester respectively, and the positive electrode and the negative electrode of the resistance tester are connected to perform the test.
Further, two pressing plate connectors are arranged on the pressing plate at intervals, a connecting groove matched with a flange on the air cylinder connector is formed between the two pressing plate connectors, the upper flange of the air cylinder connector is connected with the connecting groove formed by the two pressing plate connectors, so that the air cylinder connector is connected with the pressing plate, and the groove height of the connecting groove is matched with the height of the flange.
Further, the bottom of the pressing plate is connected with an upper heating copper plate through an upper heat insulation plate; and the bottom plate is connected with a lower heating copper plate through a lower heat insulation plate.
Further, the terminal side plate is provided with a waist-shaped hole for connecting the lug pressing plate.
Further, the lug positioning block is provided with more than one strip counter bore, the side edge of the lug positioning block is provided with more than one strip fastening round hole, and the strip fastening round hole is communicated with the strip counter bore; more than one abdication groove is arranged on the lug positioning block and communicated with the strip counter bore; the movable needle table is arranged in the strip counter bore and moves transversely in the strip counter bore to adjust the position, and the lower part of the test needle is positioned in the abdication groove.
Further, a guide shaft is arranged on the pressing plate, and a linear bearing matched with the guide shaft is arranged on the cylinder plate.
Further, an acrylic cover plate is arranged between the air cylinder plate and the bottom plate.
Further, the numbers of the strip counter bores, the strip fastening round holes and the giving way grooves are the same.
Further, the movable needle table is fixed on the lug positioning block through a fastening screw, and one end of the fastening screw penetrates through the strip fastening round hole to be connected with the movable needle table.
(III) beneficial effects
The beneficial effects of the invention are as follows: the structure is simple, one worker can complete all the work of alignment, compaction, reading and counting, the operation actions are few, the working efficiency is high, and the resistance reading is stable.
Drawings
FIG. 1 is a front elevational view of the structure of the present invention;
FIG. 2 is a side view of the structure of the present invention;
fig. 3 is a schematic view of a tab positioning block according to the present invention.
[ reference numerals description ]
1: a cylinder plate;
2: a column;
3: a bottom plate;
4: a pressurizing cylinder;
5: a cylinder movable rod;
6: a movable rod nut;
7: a pressing plate;
8: a heat insulation plate is arranged;
9: heating the copper plate;
10: a platen joint;
11: a cylinder joint;
12: a terminal side plate;
13: a linear bearing;
14: a guide shaft;
15: a tab press plate;
16: a tab positioning block;
17: a test needle;
18: a coupling nut;
19: a spring;
20: moving the needle table;
21: an acrylic cover plate;
81: a lower heat insulation plate;
91: lower heating copper plate;
92: an upper heating rod mounting hole;
93: a lower heating rod mounting hole;
121: waist-shaped holes;
161: a strip counter bore;
162: the strip is fastened with the round hole;
163: and (5) giving way.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples:
the hot-pressing resistor measuring machine for the battery cell comprises a cylinder plate 1 and a bottom plate 3, wherein an upright post 2 is connected between the cylinder plate 1 and the bottom plate 3, as shown in figures 1, 2 and 3; the cylinder plate 1 is connected with a pressurizing cylinder 4; the cylinder movable rod 5 of the pressurizing cylinder 4 passes through the cylinder plate 1, and the cylinder movable rod 5 faces downwards vertically; the cylinder joint 11 is connected to the cylinder movable rod 5 through the movable rod nut 6, and the distance between the cylinder joint 11 and the cylinder movable rod 5 can be adjusted through the movable rod nut 6; the cylinder joint 11 is connected with a pressing plate 7; two pressing plate connectors 10 are arranged on the pressing plate 7 at intervals, a connecting groove matched with a flange on the air cylinder connector 11 is formed between the two pressing plate connectors 10, the upper flange of the air cylinder connector 11 is connected with the connecting groove formed by the two pressing plate connectors 10, so that the air cylinder connector 11 is connected with the pressing plate 7, and the groove height of the connecting groove is matched with the height of the flange; the bottom of the pressing plate 7 is connected with an upper heating copper plate 9 through an upper heat insulation plate 8; more than one upper heating rod mounting holes 92 for mounting heating rods are formed in the upper heating copper plate 9; the cylinder joint 11 connected with the pressurizing cylinder 4 drives the pressing plate 7, the upper heat insulation plate 8 and the upper heating copper plate 9 to move up and down; the bottom plate 3 is connected with a lower heating copper plate 91 through a lower heat insulation plate 81; more than one lower heating rod mounting holes 93 for mounting heating rods are arranged in the lower heating copper plate 91; the lower heating copper plate 91 is located right below the upper heating copper plate 9; a space for placing a test cell is formed between the lower heating copper plate 91 and the upper heating copper plate 9; terminal side plates 12 are respectively connected to the left side and the right side of the pressing plate 7, and a lug pressing plate 15 is connected between the two terminal side plates 12; the terminal side plate 12 is provided with a waist-shaped hole 121 for connecting the lug pressing plate 15, so that the height of the lug pressing plate 15 can be conveniently adjusted;
the bottom plate 3 is provided with a tab positioning block 16, the tab positioning block 16 is positioned at the side edge of the lower heating copper plate 91, and the tab positioning block 16 is positioned right below the tab pressing plate 15; the lug positioning block 16 is provided with more than one long-strip counter bore 161, the side edge of the lug positioning block 16 is provided with more than one long-strip fastening round hole 162, and the long-strip fastening round hole 162 is communicated with the long-strip counter bore 161; more than one relief groove 163 is formed in the tab positioning block 16, and the relief groove 163 is communicated with the long counter bore 161; the number of the long-strip counter bores 161, the long-strip fastening round holes 162 and the giving-up grooves 163 is the same; a movable needle table 20 is arranged in the long-strip counter bore 161, and the movable needle table 20 transversely moves in the long-strip counter bore 161 to adjust the position; the movable needle stand 20 is fixed on the tab positioning block 16 through a fastening screw, and one end of the fastening screw passes through the strip fastening round hole 162 to be connected with the movable needle stand 20; the movable needle table 20 is connected with a test needle 17 through a connecting nut 18, the upper end and the lower end of the test needle 17 extend out of the movable needle table 20, and the lower part of the test needle 17 is positioned in the abdication groove 163, so that the test needle is conveniently connected with tweezers of a resistance tester to test the resistance of the battery cell; a spring 19 is arranged between the tab positioning block 16 and the tab pressing plate 15;
the test needle 17 passes through the spring 19 and then passes through the hole of the movable needle table 20 to form a buffering thimble structure capable of compressing and rebounding, and is arranged on the long counter bore 161; the buffer thimble structure can be adjusted in position on the long counter bore 161 to adapt to pole pieces with different sizes; after the pressurizing cylinder 4 is started and the tab pressing plate 15 is driven to descend, the tab of the battery cell positioned between the lower heating copper plate 91 and the upper heating copper plate 9 is positioned between the test needle 17 and the tab pressing plate 15, and under the combined action of the spring 19 and the pole piece pressing plate 15, the tab of the battery cell is tightly contacted with the test needle 17, so that good contact during testing is ensured; the connecting nut 18 is locked on the thread of the test needle 17, and the locking position is adjusted according to the ascending and descending range of the test needle 17; the threaded end of the test needle 17 is clamped by tweezers of the resistance tester respectively, and the positive electrode and the negative electrode of the resistance tester are connected to perform the test.
In order to make the cylinder joint 11 smoother in the moving process, the pressing plate 7 is provided with a guide shaft 14, and the cylinder plate 1 is provided with a linear bearing 13 matched with the guide shaft 14.
In order to ensure that no interference by external factors occurs during the test, an acrylic cover 21 is provided between the cylinder plate 1 and the base plate 3.
When in implementation, the specific steps are as follows: a. the working pressure value of the pressurizing cylinder 4 is adjusted to be 2.5MPa;
b. the speed regulating valve of the pressurizing cylinder 4 is controlled, and the ascending and descending speed of the pressurizing cylinder 4 is regulated, so that the pressurizing cylinder is quiet, has no loud sound and has big vibration;
c. confirming the thickness of the measured battery cell and the height of the lug pressing plate 15;
d. the main switch of the electric control cabinet connected with the pressurizing cylinder 4, the heating rod and the resistance tester is turned on, the heating rods arranged on the lower heating copper plate 91 and the upper heating copper plate 9 are heated and turned on, and the resistance tester is turned on; after the temperature of the lower heating copper plate 91 and the upper heating copper plate 9 rises to the preset temperature of the temperature controller connected with the heating rod;
e. the time counter reading of the resistance tester is adjusted to 10s, namely the pressing time of the pole piece pressing plate 15 to the tested battery cell is 10s or other appointed time;
f. then a bare cell is placed on the lower heating copper plate 91, and the bare cell is moved to contact the lug of the bare cell with the lug positioning block 16; positioning the position of the battery cell at the moment by using foam;
g. after the equipment runs and completes all actions, the resistance value on the resistance tester is read, namely the resistance value test of one cell is completed, and then the other cell needing to be measured is replaced.
The above embodiments are only for illustrating the specific implementation principle and effect of the present invention, and are not intended to limit the present invention. Any modification or variation of the method described herein can be made by those skilled in the art, and it is intended to cover such equivalent modifications or variations of the invention as would be included within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A hot-pressing resistor measuring machine for an electric core is characterized in that: the device comprises a cylinder plate (1) and a bottom plate (3), wherein an upright post (2) is connected between the cylinder plate (1) and the bottom plate (3); the cylinder plate (1) is connected with a pressurizing cylinder (4); the cylinder movable rod (5) of the pressurizing cylinder (4) penetrates through the cylinder plate (1); the cylinder movable rod (5) is connected with a cylinder joint (11) through a movable rod nut (6); the cylinder joint (11) is connected with a pressing plate (7); the bottom of the pressing plate (7) is connected with an upper heating copper plate (9); more than one upper heating rod mounting holes (92) for mounting heating rods are formed in the upper heating copper plate (9); a cylinder joint (11) connected with the pressurizing cylinder (4) drives the pressing plate (7), the upper heat insulation plate (8) and the upper heating copper plate (9) to move up and down; the bottom plate (3) is connected with a lower heating copper plate (91); more than one lower heating rod mounting holes (93) for mounting heating rods are formed in the lower heating copper plate (91); the lower heating copper plate (91) is positioned right below the upper heating copper plate (9); a space for placing a test cell is formed between the lower heating copper plate (91) and the upper heating copper plate (9); terminal side plates (12) are respectively connected to the left side and the right side of the pressing plate (7), and a lug pressing plate (15) is connected between the two terminal side plates (12);
a lug positioning block (16) is arranged on the bottom plate (3), the lug positioning block (16) is positioned at the side edge of the lower heating copper plate (91), and the lug positioning block (16) is positioned under the lug pressing plate (15); a movable needle table (20) is arranged in the lug positioning block (16); the movable needle table (20) is connected with a test needle (17) through a connecting nut (18), and the upper end and the lower end of the test needle (17) extend out of the movable needle table (20); a spring (19) is arranged between the lug positioning block (16) and the lug pressing plate (15);
the test needle (17) firstly passes through the spring (19) and then passes through the hole of the movable needle table (20) to form a buffering thimble structure capable of compressing and rebounding, and then is arranged in the lug positioning block (16); after the pressurizing cylinder (4) is started to drive the lug pressing plate (15) to descend, the lug of the battery cell positioned between the lower heating copper plate (91) and the upper heating copper plate (9) is tightly contacted with the test needle (17) under the combined action of the spring (19) and the pole piece pressing plate (15) between the test needle (17) and the lug pressing plate (15), so that good contact is ensured during testing; the connecting nut (18) is locked on the thread of the test needle (17), and the locking position is adjusted according to the ascending and descending range of the test needle (17); the threaded end parts of the test needles (17) are clamped by tweezers of the resistance tester respectively, and the positive electrode and the negative electrode of the resistance tester are connected to perform the test.
2. The thermal resistor-measuring machine for electric cells according to claim 1, wherein: two pressing plate connectors (10) are arranged on the pressing plate (7) at intervals, connecting grooves matched with flanges on the air cylinder connectors (11) are formed between the two pressing plate connectors (10), the upper flanges of the air cylinder connectors (11) are connected with the connecting grooves formed by the two pressing plate connectors (10), the air cylinder connectors (11) are connected with the pressing plate (7), and the groove heights of the connecting grooves are matched with the heights of the flanges.
3. The thermal resistor-measuring machine for electric cells according to claim 1, wherein: the bottom of the pressing plate (7) is connected with an upper heating copper plate (9) through an upper heat insulation plate (8); the bottom plate (3) is connected with a lower heating copper plate (91) through a lower heat insulation plate (81).
4. The thermal resistor-measuring machine for electric cells according to claim 1, wherein: the terminal side plate (12) is provided with a waist-shaped hole (121) for connecting the lug pressing plate (15).
5. The thermal resistor-measuring machine for electric cells according to claim 1, wherein: more than one long-strip counter bore (161) is formed in the lug positioning block (16), more than one long-strip fastening round hole (162) is formed in the side edge of the lug positioning block (16), and the long-strip fastening round hole (162) is communicated with the long-strip counter bore (161); more than one abdication groove (163) is arranged on the lug positioning block (16), and the abdication groove (163) is communicated with the long counter bore (161); a movable needle table (20) is arranged in the long counter bore (161), the movable needle table (20) transversely moves in the long counter bore (161) to adjust the position, and the lower part of the test needle (17) is positioned in the abdication groove (163).
6. The thermal resistor-measuring machine for electric cells according to claim 1, wherein: the pressure plate (7) is provided with a guide shaft (14), and the cylinder plate (1) is provided with a linear bearing (13) matched with the guide shaft (14).
7. The thermal resistor-measuring machine for electric cells according to claim 1, wherein: an acrylic cover plate (21) is arranged between the air cylinder plate (1) and the bottom plate (3).
8. The thermal resistor-measuring machine for electric cells according to claim 5, wherein: the number of the strip counter bores (161), the strip fastening round holes (162) and the relief grooves (163) is the same.
9. The thermal resistor-measuring machine for electric cells according to claim 5, wherein: the movable needle table (20) is fixed on the lug positioning block (16) through a fastening screw, and one end of the fastening screw penetrates through the strip fastening round hole (162) to be connected with the movable needle table (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568812.0A CN109581061B (en) | 2018-12-21 | 2018-12-21 | Hot-pressing resistor measuring machine for battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568812.0A CN109581061B (en) | 2018-12-21 | 2018-12-21 | Hot-pressing resistor measuring machine for battery cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109581061A CN109581061A (en) | 2019-04-05 |
| CN109581061B true CN109581061B (en) | 2023-09-19 |
Family
ID=65930408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811568812.0A Active CN109581061B (en) | 2018-12-21 | 2018-12-21 | Hot-pressing resistor measuring machine for battery cell |
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| Country | Link |
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| CN (1) | CN109581061B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU737872A1 (en) * | 1977-07-25 | 1980-05-30 | Предприятие П/Я А-7229 | Electric resistance measuring device |
| DE102004020282A1 (en) * | 2003-04-24 | 2006-07-20 | Roman Koller | Impedance or admittance circuit ohmic loss measuring method, involves feeding current portion into measuring impedance/admittance of circuit as power source to reduce ideal conductive value that refers to circuit inductivity/capacitance |
| CN204330936U (en) * | 2014-12-08 | 2015-05-13 | 中航锂电（洛阳）有限公司 | A kind of lithium ion battery short-circuit test device |
| CN105353219A (en) * | 2015-11-25 | 2016-02-24 | 佛山市广工大数控装备技术发展有限公司 | Step resistor detection system for battery module |
| CN106025372A (en) * | 2016-08-10 | 2016-10-12 | 中山市世豹新能源有限公司 | Lithium battery plastic-aluminum membrane packaging machine having on-line insulation detection function |
| CN107845766A (en) * | 2017-11-30 | 2018-03-27 | 苏州三屹晨光自动化科技有限公司 | A kind of hot pressing apparatus for shaping |
| WO2018192072A1 (en) * | 2017-04-17 | 2018-10-25 | 安普能源科技有限公司 | Lithium-ion power battery thermal protection connection structure and connection method therefor |
-
2018
- 2018-12-21 CN CN201811568812.0A patent/CN109581061B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU737872A1 (en) * | 1977-07-25 | 1980-05-30 | Предприятие П/Я А-7229 | Electric resistance measuring device |
| DE102004020282A1 (en) * | 2003-04-24 | 2006-07-20 | Roman Koller | Impedance or admittance circuit ohmic loss measuring method, involves feeding current portion into measuring impedance/admittance of circuit as power source to reduce ideal conductive value that refers to circuit inductivity/capacitance |
| CN204330936U (en) * | 2014-12-08 | 2015-05-13 | 中航锂电（洛阳）有限公司 | A kind of lithium ion battery short-circuit test device |
| CN105353219A (en) * | 2015-11-25 | 2016-02-24 | 佛山市广工大数控装备技术发展有限公司 | Step resistor detection system for battery module |
| CN106025372A (en) * | 2016-08-10 | 2016-10-12 | 中山市世豹新能源有限公司 | Lithium battery plastic-aluminum membrane packaging machine having on-line insulation detection function |
| WO2018192072A1 (en) * | 2017-04-17 | 2018-10-25 | 安普能源科技有限公司 | Lithium-ion power battery thermal protection connection structure and connection method therefor |
| CN107845766A (en) * | 2017-11-30 | 2018-03-27 | 苏州三屹晨光自动化科技有限公司 | A kind of hot pressing apparatus for shaping |
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| CN109581061A (en) | 2019-04-05 |
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