CN107994247A - A kind of cylindrical battery assembling and Insulation test component and insulating test set - Google Patents
A kind of cylindrical battery assembling and Insulation test component and insulating test set Download PDFInfo
- Publication number
- CN107994247A CN107994247A CN201711286867.8A CN201711286867A CN107994247A CN 107994247 A CN107994247 A CN 107994247A CN 201711286867 A CN201711286867 A CN 201711286867A CN 107994247 A CN107994247 A CN 107994247A
- Authority
- CN
- China
- Prior art keywords
- battery core
- welding
- battery
- test component
- anode
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000009413 insulation Methods 0.000 title claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 77
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- 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
-
- 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
Abstract
The present invention provides a kind of cylindrical battery assembling and Insulation test component and insulating test set, in cylindrical battery assembling and Insulation test component, form welding post on the pedestal with the corresponding part of anode of the cathode or the battery core of the battery core, the welding post is placing the weldment being connected with the anode of the cathode of battery core or battery core.By welding post, directly weldment can be welded in battery core, so as to complete the welding operation of battery core.At the same time, the battery core cathode is connected with positive terminal, anode is connected with negative terminal, the cathode hole passed through for the positive terminal is formed on the pedestal, and the anode hole for supplying the negative terminal to pass through, by positive terminal, negative terminal, it can be done directly in pedestal and insulation short-circuit test is carried out to the battery core after welding.Test structure overall structure provided by the invention is simple, has been provided simultaneously with the function of battery core welding and insulation short-circuit test, has used manpower and material resources sparingly, has improved production efficiency.
Description
Technical field
The present invention relates to cylindrical battery Insulation test technical field, and in particular to a kind of cylindrical battery assembling and Insulation test
Component and the insulating test set for including it.
Background technology
The continuous improvement and development of power battery technology, make the application scale of new-energy automobile greatly be extended.It is but dynamic
Power battery can not be ignored as high-voltage electricity energy storage system, its high voltage electrical isolation safe design.Therefore will be in assembling process
Battery carry out more minor insulation short-circuit tests, traditional test method for after assembling by battery core be put into subsequent processing insulate it is short
Drive test examination, due to battery core assembling and battery core insulation short-circuit test is independent of one another, it is necessary to which single station and testing staff, expend people
Power material resources, and there are risk in the transportational process after battery core welding.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome battery core assembling of the prior art and battery core insulation short circuit
The defects of test is separated from each other, spends human and material resources.
For this reason, the present invention provides a kind of cylindrical battery assembling and Insulation test component, including：Pedestal, on the pedestal into
Type has the accommodating chamber for placing battery core；Battery core be embedded in the accommodating chamber in, the cathode of battery core is connected with positive terminal, anode and
Negative terminal connects, and the cathode hole passed through for the positive terminal is formed on the pedestal, and wear for the negative terminal
The anode hole crossed, by positive terminal, negative terminal, can be done directly in pedestal the battery core after welding insulate it is short
Drive test tries.Test structure overall structure is simple, has been provided simultaneously with the function of battery core welding and insulation short-circuit test, has saved manpower thing
Power；Meanwhile the corresponding part of anode on the pedestal with the cathode or the battery core of the battery core forms welding post,
The welding post, can be straight by welding post to place the weldment being connected with the anode of the cathode of battery core or battery core
Connect and weldment is welded in battery core, so as to complete the welding operation of battery core, the stability of weldment welding process, improves production
Efficiency.
Clamping part is formed at the welding post, the clamping part is provided with welding fixture, and the weldment is arranged on
Between the welding fixture and the negative or positive electrode of the battery core, by setting clamping part, welding fixture can be improved and clamped
Stability inside portion, prevents that welding fixture shakes in welding process.
The positive terminal of the battery core or wherein one of negative terminal are connected with the welding fixture, and positive terminal leads to
The side that pedestal is connected to battery core is crossed, such set-up mode reduces the space shared by positive terminal, is conducive to improve dress
The miniaturization put.
The cylindrical battery assembling and Insulation test component, further include base, are oppositely arranged with the welding fixture, use
To place the battery core different from the one end being connected with the welding fixture, base, which can play, stablizes whole Insulation test component
Effect.
Another of the positive terminal or negative terminal is connected with the base, is closed so as to form stable positive and negative anodes
System, it is ensured that test process stablizes progress.
Welding section is formed on the welding fixture, the weldment is welded on institute by welding equipment by the welding section
State on the negative or positive electrode of battery core, welding section is arranged on the surface of welding fixture, when needing welding fixture being connected to battery core
When upper, welding gun, which is directed through welding section, can complete to weld, the welding simplicity swift to operate of vertical direction.
The pedestal and the corresponding position of the base form fixed bit, and the fixed bit is preventing the battery core
It is moved, in the assembled condition, battery core is directly embedded into fixed bit, so as to improve the stability of battery core in welding process.
Present invention simultaneously provides a kind of cylindrical battery insulating test set, including at least one cylindrical battery assembling
And Insulation test component, passing through Insulation test component provided by the invention, it is ensured that test equipment overall structure is simple, and at the same time
Possess the function of battery core welding and insulation short-circuit test, use manpower and material resources sparingly.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the schematic diagram of the cylindrical battery assembling provided by the invention and Insulation test component.
Description of reference numerals：
1- pedestals；11- cathodes hole；12- anode hole；2- battery cores；3- clamping parts；4- weldments；5- welding fixtures；6- bottoms
Seat；7- welding sections；8- fixed bits；9- positive terminals；10- negative terminals.
Embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Easy to describe the present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other into conflict.
Embodiment 1
The present embodiment provides a kind of assembling of cylindrical battery and Insulation test component, on the pedestal 1 with the battery core 2 just
The corresponding part of the anode of pole or the battery core 2 forms welding post, and the welding post is placing with battery core 2 just
The weldment 4 that the anode of pole or battery core 2 is connected.By welding post, directly weldment 4 can be welded in battery core 2, from
And complete the welding operation of battery core 2.
At the same time, 2 cathode of battery core is connected with positive terminal 9, and anode is connected with negative terminal 10, the pedestal 1
On form the cathode hole 11 passed through for the positive terminal 9, and for the anode hole 12 that the negative terminal 10 passes through, pass through
Positive terminal 9, negative terminal 10, can be done directly in pedestal 1 and carry out insulation short-circuit test to the battery core 2 after welding.This
It is simple to invent the test structure overall structure provided, has been provided simultaneously with the function that short-circuit test was welded and insulated to battery core 2, saves people
Power material resources, improve production efficiency.
In the present embodiment, clamping part 3 is formed at the welding post, the clamping part 3 is provided with welding fixture 5, institute
Weldment 4 is stated to be arranged between the welding fixture 5 and the negative or positive electrode of the battery core 2.By setting clamping part, Ke Yiti
Stability of the high welding fixture inside clamping part, prevents that welding fixture shakes in welding process.
Specifically, similar " king " font of the shape of the clamping part 3, the welding fixture 5 is tabular, and welding fixture 5 is straight
The central area of embedded clamping part 3 is connect, while 5 tensioner of welding fixture is arranged on inside clamping part 3.
In the present embodiment, the positive terminal 9 of the battery core 2 is connected with the welding fixture 5, and positive terminal 9 passes through base
Seat is connected to the side of battery core, and such set-up mode reduces the space shared by positive terminal, is conducive to improve device
Miniaturization.Base 6 is oppositely arranged with the welding fixture 5, to place the anode of the battery core 2, while on the anode of battery core 2
It is connected with negative terminal 10.
As modification, the cathode of battery core and anode can be exchanged, at this time the anode and welding fixture of the battery core 2
5 is opposite, and weldment 4 is set between the anode and welding fixture 5 of battery core 2, and base 6 is in contact with the cathode of battery core 2 at this time.
In the present embodiment, welding section 7 is formed on the welding fixture 5, welding equipment is by the welding section 7 by described in
Weldment 4 is welded on the negative or positive electrode of the battery core 2, and specifically, welding section 7 is arranged on the surface of welding fixture, when
When needing to be connected to welding fixture in battery core 2, welding gun, which is directed through welding section 7, can complete to weld, the welding of vertical direction
Simplicity swift to operate.
In order to make pedestal 1 keep stablizing, the pedestal 1 forms fixed bit 8 with the 6 corresponding position of base,
Under confined state, battery core is directly embedded into fixed bit, and the fixed bit 8 is to prevent the battery core 2 to be moved, so as to improve
The stability of battery core in welding process.
Embodiment 2
The present embodiment provides a kind of insulating test set, including the cylindrical battery described at least one embodiment 1 at the same time
Assembling and Insulation test component.Specifically, the cylindrical battery insulating test set is provided with power supply, the cathode connection institute of power supply
Positive terminal 9 is stated, the anode of power supply connects the negative terminal 10.
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (8)
1. a kind of cylindrical battery assembling and Insulation test component, it is characterised in that including：
Pedestal (1), forms to place the accommodating chamber of battery core (2) on the pedestal (1)；
The battery core (2), in the accommodating chamber, cathode is connected with positive terminal, and anode is connected with negative terminal, the base
The cathode hole (11) passed through for the positive terminal (9) is formed on seat (1), and is born for what the negative terminal (10) passed through
Pole hole (12)；
On the pedestal (1) welding is formed with the cathode of the battery core (2) or the corresponding part of anode of the battery core (2)
Station, the welding post is placing the weldment (4) being connected with the anode of the cathode of battery core (2) or battery core (2).
2. cylindrical battery assembling according to claim 1 and Insulation test component, it is characterised in that at the welding post
Clamping part (3) is formed, the clamping part (3) is provided with welding fixture (5), and the weldment (4) is arranged on the weld clip
Have between (5) and the negative or positive electrode of the battery core (2).
3. cylindrical battery assembling according to claim 2 and Insulation test component, it is characterised in that the battery core (2)
Wherein one of positive terminal or negative terminal is connected with the welding fixture (5).
4. cylindrical battery assembling according to claim 3 and Insulation test component, it is characterised in that base (6) is further included,
It is oppositely arranged with the welding fixture (5), to place the battery core (2) different from one to be connected with the welding fixture (5)
End.
5. cylindrical battery according to claim 4 assembling and Insulation test component, it is characterised in that the positive terminal or
Another of negative terminal is connected with the base (6).
6. cylindrical battery assembling according to claim 5 and Insulation test component, it is characterised in that the welding fixture
(5) welding section (7) is formed on, the weldment (4) is welded on the battery core by welding equipment by the welding section (7)
(2) on negative or positive electrode.
7. cylindrical battery according to claim 6 assembling and Insulation test component, it is characterised in that the pedestal (1) with
The corresponding position of the base (6) forms fixed bit (8), and the fixed bit (8) is preventing the battery core (2) from moving
It is dynamic.
8. a kind of insulating test set, it is characterised in that including any cylindrical battery at least one claim 1-7
Assembling and Insulation test component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286867.8A CN107994247B (en) | 2017-12-07 | 2017-12-07 | Cylindrical battery assembly and insulation test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286867.8A CN107994247B (en) | 2017-12-07 | 2017-12-07 | Cylindrical battery assembly and insulation test equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107994247A true CN107994247A (en) | 2018-05-04 |
| CN107994247B CN107994247B (en) | 2024-03-15 |
Family
ID=62036824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711286867.8A Active CN107994247B (en) | 2017-12-07 | 2017-12-07 | Cylindrical battery assembly and insulation test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107994247B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065990A (en) * | 2018-07-31 | 2018-12-21 | 格力电器（武汉）有限公司 | A kind of electrifying device of remote controler |
| CN116718918A (en) * | 2023-08-10 | 2023-09-08 | 宁德时代新能源科技股份有限公司 | Test fixture |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201072784Y (en) * | 2007-07-02 | 2008-06-11 | 深圳市比克电池有限公司 | Battery fixture clamper |
| CN102969479A (en) * | 2012-09-29 | 2013-03-13 | 珠海华冠电子科技有限公司 | Battery pole piece making and battery cell coiling integrated equipment |
| CN103594676A (en) * | 2013-11-29 | 2014-02-19 | 深圳市沃特玛电池有限公司 | Welding apparatus for junction pieces of lithium battery |
| CN203983405U (en) * | 2014-06-11 | 2014-12-03 | 左文明 | A kind of cylindrical battery battery core assembling all-in-one |
| CN105259514A (en) * | 2015-11-20 | 2016-01-20 | 北京闪信鼎中技术有限公司 | Battery cell short circuit test device and method |
| CN206627569U (en) * | 2017-03-31 | 2017-11-10 | 实联长宜（盐城）科技有限公司 | A kind of insulation impedance test fixture |
| CN207781772U (en) * | 2017-12-07 | 2018-08-28 | 河北银隆新能源有限公司 | A kind of assembly of cylindrical battery and Insulation test component and insulating test set |
-
2017
- 2017-12-07 CN CN201711286867.8A patent/CN107994247B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201072784Y (en) * | 2007-07-02 | 2008-06-11 | 深圳市比克电池有限公司 | Battery fixture clamper |
| CN102969479A (en) * | 2012-09-29 | 2013-03-13 | 珠海华冠电子科技有限公司 | Battery pole piece making and battery cell coiling integrated equipment |
| CN103594676A (en) * | 2013-11-29 | 2014-02-19 | 深圳市沃特玛电池有限公司 | Welding apparatus for junction pieces of lithium battery |
| CN203983405U (en) * | 2014-06-11 | 2014-12-03 | 左文明 | A kind of cylindrical battery battery core assembling all-in-one |
| CN105259514A (en) * | 2015-11-20 | 2016-01-20 | 北京闪信鼎中技术有限公司 | Battery cell short circuit test device and method |
| CN206627569U (en) * | 2017-03-31 | 2017-11-10 | 实联长宜（盐城）科技有限公司 | A kind of insulation impedance test fixture |
| CN207781772U (en) * | 2017-12-07 | 2018-08-28 | 河北银隆新能源有限公司 | A kind of assembly of cylindrical battery and Insulation test component and insulating test set |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109065990A (en) * | 2018-07-31 | 2018-12-21 | 格力电器（武汉）有限公司 | A kind of electrifying device of remote controler |
| CN116718918A (en) * | 2023-08-10 | 2023-09-08 | 宁德时代新能源科技股份有限公司 | Test fixture |
| CN116718918B (en) * | 2023-08-10 | 2024-04-12 | 宁德时代新能源科技股份有限公司 | Test fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107994247B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207781772U (en) | A kind of assembly of cylindrical battery and Insulation test component and insulating test set | |
| KR20130024761A (en) | Battery system and method for coupling a battery cell assembly to an electrically non-conductive base member | |
| CN107994247A (en) | A kind of cylindrical battery assembling and Insulation test component and insulating test set | |
| CN204905342U (en) | Cylinder type lithium ion battery utmost point ear and lithium ion battery who uses this utmost point ear | |
| CN202167563U (en) | Cylindrical lithium-ion power battery | |
| CN102623661B (en) | series-parallel connection power battery structure | |
| CN107994254B (en) | Cylindrical battery | |
| CN201336333Y (en) | Battery pack | |
| CN207281117U (en) | A kind of battery discharging instrument Quick Connect Kit | |
| CN107732047A (en) | Electric automobile chassis device | |
| CN110299249A (en) | A kind of electrochemical energy storing device | |
| CN202454623U (en) | Unit thermal battery combination fixing frame | |
| CN102208718A (en) | Flexible connecting strip of high-capacity high-power power battery module | |
| CN208539683U (en) | Stator and its electric resistance welder | |
| CN206550554U (en) | A kind of weld jig of lead-acid accumulator cast welding nose circle | |
| CN207134389U (en) | Battery cover board assembly and the battery including the battery cover board assembly | |
| CN212526468U (en) | Battery block welding jig and battery assembly device | |
| CN206422163U (en) | A kind of lithium ion battery | |
| CN206619635U (en) | A kind of flash-light battery | |
| CN201067826Y (en) | Wireless emergency electric welding machine | |
| CN100357057C (en) | Method for improving welding strength of lithium ion rectangular cell negative electrode lug | |
| CN105729002B (en) | A kind of carrying clamping jaw of assembly to be welded | |
| CN104953170A (en) | Structure for improving safety of needling operation outside battery | |
| CN214848343U (en) | Flexible connection for medium and high voltage circuit breaker | |
| CN209432860U (en) | A kind of charge-discharge test machine battery parallel clamp tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |