CN103474611A - Battery pack - Google Patents
Battery pack Download PDFInfo
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- CN103474611A CN103474611A CN2013103648897A CN201310364889A CN103474611A CN 103474611 A CN103474611 A CN 103474611A CN 2013103648897 A CN2013103648897 A CN 2013103648897A CN 201310364889 A CN201310364889 A CN 201310364889A CN 103474611 A CN103474611 A CN 103474611A
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- bus
- battery pack
- sealing cover
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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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- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery pack. The battery pack comprises several single batteries, wherein the several single batteries are connected in series in sequence through several conductive bars connected internally; each single battery comprises a casing provided with an opening, a hot seal cover is covered at the opening part in a sealing manner, two poles are mounted on the hot seal cover, inner ends of the poles are arranged in the casing, outer ends of the poles penetrate the hot seal cover and then extend outward, and the outer ends of the poles are cylindrical; each conductive bar connected internally is manufactured by fixedly connecting a sleeve at each of the two ends of a conductive strip respectively, the sleeves are hollow cylindrical, the inside diameters of the sleeves are matched with the outside diameters of the outer ends of the poles; the outer ends of the poles are inserted into the sleeves for locking in a matched manner. According to the invention, the poles of the battery pack are connected by inserting the conductive bars quickly; the inserting connection structure is simple, the connection is firm and reliable, the contact is tight, the assembly is quick, the work efficiency can be improved, the contact resistance can be lowered, the electrical conductivity is increased, the temperature rise is lowered, the multiplying power is improved, the service life is improved, and the comprehensive performance of the battery pack is obviously improved.
Description
Technical field
The invention belongs to the battery manufacture technical field, be specifically related to a kind of simple for structure, be convenient to the assembling battery pack structure.
Background technology
Traditional battery comprises pole, bus, between pole and bus, adopts screw to be fixedly connected with, and there is following defect in it: 1, due to the being dismounted for multiple times screw, produce the sliding tooth of pole screw thread, cause both to connect insecure.2, bus and pole Surface Contact are not tight, and contact resistance is large.3, the screw loosening phenomenon appears in the use (vibrate and expand with heat and contract with cold) along with battery, and then has affected serviceability and the useful life of battery.For this reason, China Patent No. 201020504334.X discloses the assembly structure of a kind of battery electrode column and bus, between its bus and pole, by clamping, is fixedly linked.
Though above-mentioned patented product has its advantage, there is following defect in it: the interface arrangment formed between pole and bus is comparatively complicated, be not easy to produce, and quick not in both assembling process.
Summary of the invention
The above-mentioned technical problem existed for solving prior art, the invention discloses a kind of battery pack, and it is simple for structure, contact is tight, assembling is quick.
The present invention takes following technical scheme: a kind of battery pack, comprise several cells, several cells are connected successively by connecing bus in several, described cell comprises a housing, housing has an opening, and opening part seal cover unification heat-sealing cover, be equipped with two poles on heat-sealing cover, pole the inner is in housing, and the pole outer end stretches out through after heat-sealing cover; The outer end of described pole is cylindric; Connect bus in described and formed by each affixed sleeve of conducting strip two ends, sleeve is hollow cylindrical, and the external diameter of sleeve diameter and described pole outer end is suitable, and described sleeve is inserted and secure fit in described pole outer end.
Preferably, the neighboring of the heat-sealing cover frame shape that is rectangle, toward the outer side, its two broadsides respectively form a microscler crack to this frame, and two cracks correspond respectively to positive and negative terminals; Two long limits of frame respectively form two microscler cracks, and corresponding crack position, two long limits corresponds respectively to positive and negative terminals; Described crack connects the conducting strip of bus for stretching through in described.
Preferably, battery pack is outwards exported electric energy by two external buss: by the conducting strip two ends, affixed the second sleeve, coupling form described external bus respectively, described the second sleeve is hollow cylindrical, the second sleeve diameter be not connected in to connect the external diameter of pole outer end of bus suitable, described the second sleeve is inserted and secure fit in the described pole outer end that connects bus in connecting; Externally the conducting strip of bus stretches out outside heat-sealing cover through the corresponding crack of corresponding cell heat-sealing cover, and coupling is outside heat-sealing cover.
Preferably, the inner surface of sleeve in the shape of a spiral.
Preferably, the sheathed clamp ring of the outer wall of sleeve.
Preferably, inside connect bus and all be connected with a voltage acquisition line with external bus, outside the voltage acquisition line leads to.
Preferably, between two cracks on the long limit of homonymy, on frame, forming cable tray; Described voltage acquisition line connects bus or externally bus is drawn, stretches out along the cable tray of heat-sealing cover is linearly from interior.
Preferably, inside connect bus or externally bus the temperature connector is installed, outside the temperature connector leads to by the temperature acquisition line.
Preferably, form binding location hole and trough on heat-sealing cover; Described temperature acquisition line connects bus or externally bus is drawn, first, through the trough of heat-sealing cover, utilizes the binding location hole to be fixed the temperature acquisition line from interior, and the rear cable tray along heat-sealing cover is linearly to stretch out.
Preferably, housing is Fang Tizhuan, its first side forms projection and shrinkage pool, the opposite side relative with the first side also forms projection and shrinkage pool, but the projection on two opposite flanks and the shape of shrinkage pool are suitable, and position is exchanged mutually, between the adjacent monomer battery, by the projection of a cell, insert the shrinkage pool of adjacent another cell and both are assembled.
Preferably, pole and heat-sealing cover are integrated shape.
Preferably, the end, outer end of pole is with the self-locking area separation structure.
Preferably, pole self-locking area separation structure back-off is locked a self-locking Capsule, and the self-locking Capsule is as the use of both positive and negative polarity differentiation.
Battery pack of the present invention has following technique effect:
One, between the pole of battery, by the fast bus of inserting, connect, its connected structure is succinct, firm and reliable connection, contact closely, assembling is quick, and can increase work efficiency, and can reduce contact resistance, increase conductivity, reduce temperature rise, improve multiplying power, improve useful life, the combination property of battery is significantly improved.
Two, in preferred version, all extraction voltage sample line be connected with sleeve of temperature sampling connector and each bus are installed at least one bus of this battery pack, so that be connected fast between management system and battery, greatly improved operating efficiency.
Three, in preferred version, by heat-sealing cover upward wiring design, make the wiring of cabling in battery pack structure of management system neat, in order, the various operations of being convenient to cabling as searched, fix, maintenance etc.
Above three have that a general character is convenient installs and be convenient to maintenance in the future and improve the safety in utilization of battery.
The accompanying drawing explanation
Fig. 1 is the plan structure figure of cell.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 2.
Fig. 4 is a kind of front view of battery pack.
Fig. 5 is a kind of vertical view of battery pack.
Fig. 6 is a kind of left view of battery pack.
Fig. 7 is a kind of stereogram of battery pack.
Fig. 8 is pole and the assembly structure vertical views such as bus and lead-in wire.
Fig. 9 is pole and the assembly structure stereograms such as bus and lead-in wire.
Figure 10 is the longitudinal sectional view of the external bus of L-type.
Figure 11 is the vertical view of the external bus of L-type.
Figure 12 is the stereogram of the external bus of L-type.
Figure 13 is the longitudinal sectional view of external bus.
Figure 14 is the vertical view of external bus.
Figure 15 is the stereogram of external bus.
Figure 16 connects the longitudinal sectional view of bus in being.
Figure 17 connects the vertical view of bus in being.
Figure 18 connects the stereogram of bus in being.
Figure 19 is the longitudinal sectional view of pole.
Figure 20 is the vertical view of pole.
Figure 21 is the front view of heat-sealing cover.
Figure 22 is the vertical view of heat-sealing cover.
Figure 23 is the left view of heat-sealing cover.
Figure 24 is the C-C cutaway view of Figure 22.
Figure 25 is the stereogram of heat-sealing cover.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
As Figure 1-3, the cell of the present embodiment comprises side's body shape plastic casing 9, these housing 9 internal battery parts, its have one suitable for reading, sealing suitable for reading covers heat-sealing cover 6.The middle part assembling safety valve 4 of heat-sealing cover 6, both contact positions are encased inside O RunddichtringO 5.Safety valve 4 towards outer end also cover cap trim 3 is arranged.
It is positive and negative terminals that two poles 8 are housed on heat-sealing cover 6, and positive and negative terminals and heat-sealing cover are integrated shape, and positive terminal, negative terminal are arranged at the both sides of safety valve symmetrically.Referring to Figure 19-20, the longitudinal section of pole 8 is the ⊥ shape, and its inner segment 8-1 is cube-shaped, vertical section 8-2 is cylindrical shape, with the upper annular groove 8-3 that forms of the inner segment 8-1 of vertical section 8-2 junction periphery, this annular groove is for snapping in the corresponding section of heat-sealing cover 6, and the O RunddichtringO 7 of packing between the two.The inboard of inner segment 8-1 in heat-sealing cover 6, vertical section 8-2 stretches out through heat-sealing cover 6, the end of its outer end is with the self-locking area separation structure, in the present embodiment, the longitudinal section of this end is the I-shaped shape, and it is that both positive and negative polarity is distinguished cap 2 that this I-shaped section back-off is locked a self-locking Capsule, and Positive Poles fills anodal Capsule, negative pole pole dress negative pole Capsule, the self-locking Capsule is as the use of both positive and negative polarity differentiation.
Heat-sealing cover 6 outside snapping outward appearances lids 1, outward appearance lid 1 has two and distinguishes the corresponding holes of cap 2 with both positive and negative polarity, makes outside both positive and negative polarity differentiation cap 2 is revealed in, to show the differentiation both positive and negative polarity.
Referring to Figure 21-25, the neighboring of the heat-sealing cover 6 frame shape that is rectangle, toward the outer side, its two broadsides respectively form a microscler crack 6-1 to this frame, and two crack 6-1 correspond respectively to positive and negative terminals.Article two, long limit respectively forms two microscler crack 6-2, and corresponding crack 6-2 position, two long limits corresponds respectively to positive and negative terminals.Like this, each pole has three (three directions) crack corresponding thereto.Crack is for stretching through bus.Form four U-shaped cable tray 6-3 between two crack 6-2 of homonymy, for the interconnector cabling.Form respectively chimb on the heat-sealing cover between assembling positive and negative terminals and assembling safety valve, form two square binding location hole 6-4 on chimb.Crack 6-1,6-2 place have designed weak link, when needs are walked bus, it can be got rid of, and while not needing cabling, without getting rid of, maintain its aesthetics and consistency.Referring to Figure 25, at the other U-shaped cable tray 6-5 in addition of square binding location hole, line is out walked toward cable tray 6-3 from cable tray 6-5 after the binding of square binding location hole again, and the line of binding location hole increases along with the increase of battery.
Referring to Fig. 4-7, four cells of the present embodiment are affixed arrangement side by side, and by the interior bus that connects, link (inside connecing the both positive and negative polarity that the bus two ends connect respectively the adjacent cell pole) successively, are assembled into battery pack.Referring to Fig. 3,7, shell one side of cell (long limit and side that flash encloses) forms two projection 9-1 and two shrinkage pool 9-2, and the relative opposite side in side also forms two projections and two shrinkage pools therewith, but the projection on two sides and the shape of shrinkage pool are suitable, and position is exchanged mutually, be between the adjacent monomer battery, by two projections of a cell, insert two shrinkage pools of another cell and both are bolted together.
Connect the structure that bus connects details are as follows by interior between the adjacent monomer battery: referring to Fig. 4-7, the present embodiment battery pack is assembled by four cells, the both positive and negative polarity of adjacent monomer battery connects by the interior bus that connects, as shown in Fig. 8,9,16-18, inside connect bus and comprise a square conducting strip 10, two of conducting strip 10 connects a sleeve (or claiming splicing ear) 11 by (vertically) riveting respectively, and sleeve 11 is hollow cylindrical.The vertical section 8-2 external diameter of the internal diameter of sleeve 11 and pole 8 is suitable, i.e. the vertical section 8-2 of the interior insertion pole 8 of sleeve 11 and both are fixedly linked.And, the inner surface of sleeve 11 is regular helical form, thereby can increase the close contact power with pole (polished rod), and can reduce contact resistance, increases conductivity, reduces temperature rise, improves multiplying power, improve battery cycle life, the combination property of battery is significantly improved.
Separately, in the sheathed clamp ring 12 of the medial segment outer wall of sleeve 11, be used for locking the tautness of bus 10 and sleeve 11, further to strengthen sleeve 11 and the firmness that pole 8 contacts, prevent from revealing loosening phenomenon between the two.
Stretch out outside sleeve 11 the vertical section 8-2 outer end of pole 8, and the phenomenons such as not tight are become flexible or come off, contact in this termination, by Capsule (being that aforesaid both positive and negative polarity is distinguished cap 2) cover cap, to prevent bus; Capsule and pole exposed junction back-off, form self-locking mechanism.
Inside connect the conducting strip 10 of bus through the corresponding crack 6-2 of adjacent heat capping 6.
The present embodiment battery pack is by an external bus and the external bus of another root L-type and outwards export electric energy.Referring to Figure 10-12, connect the bus difference in shown in the external bus of L-type and Figure 16-18 and be: it establishes a sleeve 11, and it is connected with the Positive Poles in outermost one cell; The other end is the coupling 15 of an affixed hollow cylindrical, and this coupling 15 is perpendicular with conducting strip 10.The conducting strip 10 of the external bus of this L-type is through the corresponding crack 6-2 of this cell heat-sealing cover 6, and coupling 15 is outside heat-sealing cover 6.
Referring to Figure 13-15, externally shown in bus and Figure 16-18 in connect the bus difference and be: it establishes a sleeve 11, and it is connected with the negative pole pole in another cell of outermost; The other end is the coupling 15 of an affixed hollow cylindrical, and this coupling 15 and conducting strip 10 are in same straight line.The conducting strip 10 of this external bus is through the corresponding crack 6-1 of this cell heat-sealing cover 6, and coupling 15 is outside heat-sealing cover 6.
One temperature connector 13 is installed at least one bus of battery pack, and the temperature connector 13 of the present embodiment is one, and it is loaded in one and connects on bus, and it is set in this segmentum laterale of the sleeve 11 that connects bus.Temperature connector 13 is drawn outside battery pack and with extraneous battery management system and is linked by temperature acquisition line 14, the temperature connector adopts prior art, it gathers internal temperature of battery, and passes to outside battery management system, to guarantee the safe operation of battery.Temperature connector 13 with flatten sleeve is local again after temperature acquisition line 14 inserts respectively corresponding sleeve, thereby two lines are coupled together, it is swift to operate, convenient, reliably; Other adopts line ball also can adopt this kind of connected mode.
Referring to Fig. 8-18, all be connected with a voltage acquisition line 16 on each bus again, voltage acquisition line 16 flattens the sleeve part after inserting corresponding sleeve again.The many voltage acquisition line 16(in a homonymy wherein side also have temperature acquisition line 14) by several tieing wire knots 17, tie up, except one of them two poles of outermost, all the other poles are all to there being two tieing wire knots 17, voltage acquisition line 16 after tying up extends to the other end from this end, until draw outside battery pack.
Above the preferred embodiments of the present invention are had been described in detail, for those of ordinary skill in the art, according to thought provided by the invention, will change on embodiment, and these changes also should be considered as protection scope of the present invention.
Claims (10)
1. a battery pack, comprise several cells, several cells are connected successively by connecing bus in several, described cell comprises a housing, housing has an opening, and opening part seal cover unification heat-sealing cover, be equipped with two poles on heat-sealing cover, pole the inner is in housing, and the pole outer end stretches out through after heat-sealing cover; It is characterized in that: the outer end of described pole is cylindric; Connect bus in described and formed by each affixed sleeve of conducting strip two ends, sleeve is hollow cylindrical, and the external diameter of sleeve diameter and described pole outer end is suitable, and described sleeve is inserted and secure fit in described pole outer end.
2. battery pack as claimed in claim 1 is characterized in that: the neighboring of the described heat-sealing cover frame shape that is rectangle, and toward the outer side, its two broadsides respectively form a crack to this frame, and two cracks correspond respectively to positive and negative terminals; Two long limits of frame respectively form two cracks, and corresponding crack position, two long limits corresponds respectively to positive and negative terminals; Described crack connects the conducting strip of bus for stretching through in described.
3. battery pack as claimed in claim 2, it is characterized in that: described battery pack is outwards exported electric energy by two external buss: by the conducting strip two ends, affixed the second sleeve, coupling form described external bus respectively, described the second sleeve is hollow cylindrical, the second sleeve diameter be not connected in to connect the external diameter of pole outer end of bus suitable, described the second sleeve is inserted and secure fit in the described pole outer end that connects bus in connecting; Externally the conducting strip of bus stretches out outside heat-sealing cover through the corresponding crack of corresponding cell heat-sealing cover, and coupling is outside heat-sealing cover.
4. as the described battery pack of claim 1-3 any one, it is characterized in that: the inner surface of sleeve or the second sleeve in the shape of a spiral.
5. as the described battery pack of claim 1-3 any one, it is characterized in that: the sheathed clamp ring of the outer wall of sleeve.
6. battery pack as claimed in claim 3, is characterized in that: inside connect bus and all be connected with a voltage acquisition line with external bus, outside the voltage acquisition line leads to.
7. battery pack as claimed in claim 6, is characterized in that: between two cracks on the long limit of homonymy, on frame, forming cable tray; Described voltage acquisition line connects bus or externally bus is drawn, stretches out along the cable tray of heat-sealing cover is linearly from interior.
8. battery pack as claimed in claim 7 is characterized in that: inside connect bus or externally bus the temperature connector is installed, outside the temperature connector leads to by the temperature acquisition line.
9. battery pack as claimed in claim 8, is characterized in that: form binding location hole and trough on heat-sealing cover; Described temperature acquisition line connects bus or externally bus is drawn, first, through the trough of heat-sealing cover, utilizes the binding location hole to be fixed the temperature acquisition line from interior, and the rear cable tray along heat-sealing cover is linearly to stretch out.
10. battery pack as claimed in claim 1, it is characterized in that: described housing is Fang Tizhuan, its first side forms projection and shrinkage pool, the opposite side relative with the first side also forms projection and shrinkage pool, but the projection on two opposite flanks and the shape of shrinkage pool are suitable, and position is exchanged mutually, between the adjacent monomer battery, by the projection of a cell, insert the shrinkage pool of adjacent another cell and both are assembled;
Perhaps, described pole and heat-sealing cover are integrated shape;
Perhaps, the end, outer end of described pole is with the self-locking area separation structure; Preferably, pole self-locking area separation structure back-off is locked a self-locking Capsule, and the self-locking Capsule is as the use of both positive and negative polarity differentiation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364889.7A CN103474611B (en) | 2013-08-20 | 2013-08-20 | A kind of battery pack |
| PCT/CN2014/084212 WO2015024470A1 (en) | 2013-08-20 | 2014-08-12 | Single-cell battery and ready-packaged battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364889.7A CN103474611B (en) | 2013-08-20 | 2013-08-20 | A kind of battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103474611A true CN103474611A (en) | 2013-12-25 |
| CN103474611B CN103474611B (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310364889.7A Active CN103474611B (en) | 2013-08-20 | 2013-08-20 | A kind of battery pack |
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| Country | Link |
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| CN (1) | CN103474611B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015024470A1 (en) * | 2013-08-20 | 2015-02-26 | 余姚市百立嘉电子有限公司 | Single-cell battery and ready-packaged battery pack |
| CN105679973A (en) * | 2016-03-10 | 2016-06-15 | 闻人红雁 | Battery with aluminum plastic integrated end cover |
| CN109473579A (en) * | 2018-12-19 | 2019-03-15 | 扬州金快乐电源有限公司 | A kind of self-locking connecting device of battery |
| CN109888367A (en) * | 2019-02-28 | 2019-06-14 | 江苏中兴派能电池有限公司 | A kind of waste and old lithium ion battery recycles the lithium ion battery of production |
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|---|---|---|---|---|
| CN201503888U (en) * | 2009-08-12 | 2010-06-09 | 孙凤启 | Novel lithium battery pack |
| JP2010212155A (en) * | 2009-03-11 | 2010-09-24 | Mitsubishi Heavy Ind Ltd | Terminal connecting member material and battery pack |
| CN201638864U (en) * | 2010-04-01 | 2010-11-17 | 力柏时代锂动力科技（北京）有限公司 | Variably-connected battery box |
| CN202454652U (en) * | 2012-02-22 | 2012-09-26 | 高平唐一新能源科技有限公司 | Lithium battery case |
| CN203481310U (en) * | 2013-08-20 | 2014-03-12 | 余姚市百立嘉电子有限公司 | Ready-packaged battery pack |
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2013
- 2013-08-20 CN CN201310364889.7A patent/CN103474611B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010212155A (en) * | 2009-03-11 | 2010-09-24 | Mitsubishi Heavy Ind Ltd | Terminal connecting member material and battery pack |
| CN201503888U (en) * | 2009-08-12 | 2010-06-09 | 孙凤启 | Novel lithium battery pack |
| CN201638864U (en) * | 2010-04-01 | 2010-11-17 | 力柏时代锂动力科技（北京）有限公司 | Variably-connected battery box |
| CN202454652U (en) * | 2012-02-22 | 2012-09-26 | 高平唐一新能源科技有限公司 | Lithium battery case |
| CN203481310U (en) * | 2013-08-20 | 2014-03-12 | 余姚市百立嘉电子有限公司 | Ready-packaged battery pack |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015024470A1 (en) * | 2013-08-20 | 2015-02-26 | 余姚市百立嘉电子有限公司 | Single-cell battery and ready-packaged battery pack |
| CN105679973A (en) * | 2016-03-10 | 2016-06-15 | 闻人红雁 | Battery with aluminum plastic integrated end cover |
| CN105679973B (en) * | 2016-03-10 | 2018-03-27 | 闻人红雁 | A kind of end cap plastic-aluminum one electrochemical cell |
| CN109473579A (en) * | 2018-12-19 | 2019-03-15 | 扬州金快乐电源有限公司 | A kind of self-locking connecting device of battery |
| CN109888367A (en) * | 2019-02-28 | 2019-06-14 | 江苏中兴派能电池有限公司 | A kind of waste and old lithium ion battery recycles the lithium ion battery of production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103474611B (en) | 2016-01-06 |
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Owner name: ZHEJIANG GBS ENERGY CO., LTD. Free format text: FORMER OWNER: YUYAO BAILIJIA ELECTRONIC CO., LTD. Effective date: 20150410 |
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Effective date of registration: 20150410 Address after: North East Yuyao city 315400 Zhejiang city of Ningbo province No. 6 Applicant after: ZHEJIANG GBS ENERGY Co.,Ltd. Address before: North East Yuyao city 315400 Zhejiang city of Ningbo province No. 6 Applicant before: YUYAO BRIDGE ELECTRONICS Co.,Ltd. |
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Denomination of invention: A battery pack Effective date of registration: 20220725 Granted publication date: 20160106 Pledgee: China Co. truction Bank Corp Yuyao branch Pledgor: ZHEJIANG GBS ENERGY Co.,Ltd. Registration number: Y2022330001515 |
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