CN201054373Y - Anti-vibration dynamic battery group device - Google Patents

Anti-vibration dynamic battery group device Download PDF

Info

Publication number
CN201054373Y
CN201054373Y CNU2007201202237U CN200720120223U CN201054373Y CN 201054373 Y CN201054373 Y CN 201054373Y CN U2007201202237 U CNU2007201202237 U CN U2007201202237U CN 200720120223 U CN200720120223 U CN 200720120223U CN 201054373 Y CN201054373 Y CN 201054373Y
Authority
CN
China
Prior art keywords
battery
shell
bracket
coupling seat
face
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.)
Expired - Lifetime
Application number
CNU2007201202237U
Other languages
Chinese (zh)
Inventor
李智
董超祺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGZHOU ZHANHUI ELECTRONIC CO Ltd
Original Assignee
GUANGZHOU ZHANHUI ELECTRONIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GUANGZHOU ZHANHUI ELECTRONIC CO Ltd filed Critical GUANGZHOU ZHANHUI ELECTRONIC CO Ltd
Priority to CNU2007201202237U priority Critical patent/CN201054373Y/en
Application granted granted Critical
Publication of CN201054373Y publication Critical patent/CN201054373Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Battery Mounting, Suspending (AREA)

Abstract

The utility model relates to a vibration proof power battery pack device. A supporting frame structure limiting the positions of a plurality of battery pack units (2) is configured in a casing (1) of the device, and the supporting frame structure comprises a lower supporting frame (51), an upper supporting frame (55) and at least a middle supporting frame (52); a plurality of locating holes (53) or locating semi-holes (56) respectively clamping each battery are uniformly distributed on each supporting frame, a battery pack unit (2) is respectively clamped between the lower supporting frame (51) and the middle supporting frame (52) and between the middle supporting frame (52) and the upper supporting frame (55), the whole formed by vertically superposing the battery pack units (2) is contained by the casing (1), and cushioning is arranged between the top surface and the bottom surface of the integral battery pack units (2) and the inner wall of the casing (1). Each battery in the battery pack of the utility model is located reliably, thereby having good vibration proof performance, being able to maintain the good electric contact of each electrical core, having good heat radiation performance, and being very suitable for various power battery packs used in vibration environments.

Description

Anti-knock power battery apparatus
Technical field
The utility model relates to a kind of chargeable supply unit, relates in particular to a kind of lithium ion battery group that the vehicle power power supply is provided.
Background technology
Existing rechargable power supplies for example is used for the electrokinetic cell of electric bicycle, generally all adopts the mode of multiple batteries parallel connection and serial connection to expand the capacity of battery, improves the voltage of battery.Wherein multiple batteries has plenty of and directly is placed in the outer box of battery, this mounting means is because battery lacks necessary fixing, make that electrically contacting of battery is unreliable, outside vibrations are easy to influence the state of battery, and whole battery group job stability in the environment of height vibrations is very poor; What also have closely is fixed together multiple batteries, though this mode has solved the problem of battery antidetonation to a certain extent, multiple batteries squeezes and to stick together, and the heat radiation when being unfavorable for electric core work influences the job stability of battery pack equally.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of internal electrical core the fixing reliable and good anti-knock power battery apparatus that dispels the heat.
The technical scheme in the invention for solving the above technical problem is, manufacture and design a kind of anti-knock power battery apparatus, comprising: shell, place a plurality of battery assembly modules in the enclosure and discharging and recharging and the charge-discharge protection circuit plate of being electrically connected with described a plurality of battery assembly modules; Dispose the supporting structure that limits described a plurality of battery assembly modules position in the described shell, this supporting structure comprises: lower bracket, upper bracket and at least one middle bracket between described lower bracket and upper bracket; Described lower bracket evenly is laid with the location hole identical with the number of battery cells of a battery assembly module with upper bracket, each location hole is battery of clamping just in time, but each evenly is laid with half hole, location of each battery of a battery assembly module of clamping upper and lower two faces of described middle bracket
Battery assembly module of each clamping between described lower bracket and the middle bracket and between described middle bracket and the upper bracket, the integral body that described a plurality of battery assembly module is vertical pile is contained by described shell, thus can a plurality of battery pack are fixing reliably in the enclosure, and be provided with cushion between the end face of a plurality of battery assembly modules that should integral body and the inwall of bottom surface and described shell, can further improve its anti-seismic performance.
Half hole, location of the location hole of described lower bracket and upper bracket outer rim and middle bracket outer rim is provided with the breach of the volume that is intended to reduce battery apparatus, and the outer rim of described middle bracket and the internal face of described shell are suitable.
Described shell is formed by fixedly connecting by screw successively by face-piece, mesochite and drain pan; The junction of described face-piece and mesochite is fixed with a location-plate, described circuit board be fixed on this location-plate above, in the cavity of described a plurality of battery assembly modules between this location-plate and described drain pan.
Respectively be provided with a circle groove on the jointing edge of described mesochite two ends and face-piece and drain pan, the built-in waterproof apron that is placed with of described groove, the jointing edge of described face-piece and drain pan is provided with the convex edge that can embed in the described groove, is the compacted purpose that reaches waterproof thereby with screw each housing is installed the back waterproof apron.
The top board of described face-piece is provided with perforate, this tapping is equipped with an indicator light mounting panel that is connected with described circuit board, be provided with waterproof apron between the top board medial surface of the periphery of this indicator light mounting panel and described face-piece, can prevent to be equipped with the interior water inlet of cavity of circuit board.
Battery apparatus of the present utility model also comprises the suspension assembly that is arranged on the described shell back side, and described suspension assembly comprises: with the affixed holder of vehicle frame, connect the coupling seat of described shell and holder and be installed in and be used on the described coupling seat described shell is locked in locking device on the suspension assembly;
Described coupling seat has the coupling seat base portion of cavity and hides the coupling seat top cover of described cavity, and both are fixedly connected by a plurality of small screws that insert from coupling seat top cover edge; Described locking device is installed in the described cavity, allows locking device open port and exposes;
The bottom faces of described coupling seat base portion is provided with the aperture that a plurality of and described cavity communicates, and a plurality of hidden screws in described cavity pass described aperture respectively and screw in the screw of offering on the described holder;
Described coupling seat top cover is provided with the dovetail tenon of the dovetail groove grafting that is provided with the shell back side, and at both inserting states, the small screw on the described coupling seat top cover is hidden state.
After adopting said structure, by setting described holder can change described battery apparatus easily in the affixed orientation of vehicle frame installation position, can arbitrarily battery apparatus be installed in the position that does not hinder the cyclist to get on or off the bus thus, under lock-out state, suspension assembly and shell can't be pulled down simultaneously, have antitheft effect.
Compare with prior art, anti-knock power battery apparatus of the present utility model has following advantage: interior each battery of shell is fixed on each location hole of supporting structure reliably or is located in half hole, can keep the excellent electric contact of each battery, have good seismic resistance; Evenly spaced apart between the adjacent cell by supporting structure, help the heat radiation when battery operated; In addition, convex-concave interlock place that mesochite engages with face-piece and drain pan has additional waterproof apron, between indicator light mounting panel and the face-piece top board waterproof apron is housed also, the shell of whole battery group has extraordinary water-proof function, even the use battery pack also can operate as normal under adverse circumstances such as wet weather or rainy day.Above each point all helps keeping battery pack reliability during operation and stability, can prolong the working life of battery pack; Battery apparatus can be mounted on the link with different positions and direction with holder by coupling seat easily in addition, also has antitheft function.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION figure of the utility model anti-knock power battery apparatus;
Fig. 2 is the exploded view of described electric core group and supporting structure thereof;
Fig. 3 is the transverse cross-sectional view of the utility model anti-knock power battery apparatus;
Fig. 4 is the I portion enlarged drawing among Fig. 3;
Fig. 5 is the II portion enlarged drawing among Fig. 3;
Fig. 6 is the exploded view of described shell 1, coupling seat 91 and holder 92;
Fig. 7 is the STRUCTURE DECOMPOSITION figure of described holder 92 and coupling seat 91.
Embodiment
Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.
As shown in figures 1 and 3; anti-knock power battery apparatus of the present utility model comprises shell 1, discharging and recharging and charge-discharge protection circuit plate 3 and the supporting structure that limits described a plurality of battery assembly module 2 positions of being placed on a plurality of battery assembly modules 2 in the shell 1, being electrically connected with described a plurality of battery assembly modules 2, and this supporting structure comprises again: lower bracket 51, upper bracket 55 and at least one middle bracket 52 between described lower bracket 51 and upper bracket 55.
As shown in Figure 2, have two battery assembly modules 2 up and down and connect a middle bracket 52 of two battery assembly modules 2 in the present embodiment.Described lower bracket 51 evenly is laid with the location hole 53 identical with the number of battery cells of a battery assembly module 2 with upper bracket 55, and the shape of the shape of each location hole 53 inwall and size and battery sidewall and size are just in time mated to be made it and battery can be clamped.The middle part of described middle bracket 52 is provided with an insulation board 521, equally, each evenly is laid with upper and lower two faces of this insulation board 521 respectively and half hole 56, battery assembly module 2 the same number of location up and down, and each battery clamping one by one of battery assembly module 2 up and down.Thus, upper cell group unit 2 is gripped by upper bracket 55 and middle bracket 52, bottom battery assembly module 2 is gripped by lower bracket 51 and middle bracket 52, and two battery assembly module 2 vertical pile and connect by middle bracket 52 are in aggregatesly closely contained by described shell 1.In order to reduce the volume of battery apparatus, half hole 56, location of the location hole 53 of described lower bracket 51 and upper bracket 55 outer rims and middle bracket 52 outer rims is provided with breach 54, the internal face of the outer rim of described middle bracket 52 and described shell 1 is suitable, all batteries are all fixed reliably thus, and the hole 53 or to locate the hole wall in half hole 56 spaced apart of being positioned between each battery, help the heat radiation of battery.
During assembling, earlier two Battery pack group unit 2 are contained in respectively on lower bracket 51 and the upper bracket 55, then with 6 dozens of electric weldings of metal contact to the two end electrodes place of every Battery pack group unit 2, at last two Battery pack group unit 2 are filled in half hole, location of top and the bottom of middle bracket 52 respectively and by hand hydraulic cutting presser compress can be in aggregates with all batteries assemblings.
As shown in Figure 1, described shell 1 is formed by fixedly connecting by screw 81 and 82 from top to bottom successively by face-piece 11, mesochite 12 and drain pan 13; The junction of described face-piece 11 and mesochite 12 is fixed with a location-plate 18 cavity in the shell 1 is separated into two cavitys; described circuit board 3 is fixed in the cavity on these location-plate 18 tops; in the lower cavity of described a plurality of battery assembly module 2 between this location-plate 18 and described drain pan 13; be respectively arranged with cushion (figure slightly) between the bottom surface of the battery assembly module 2 under and the drain pan 13 and between the end face of the battery assembly module of going up most 2 and the described location-plate 18; thereby better protect entire bracket structure and interior battery thereof, improve its shatter-resistant anti-seismic performance.
As Fig. 1, Fig. 3 and shown in Figure 4, respectively be provided with a circle groove 15 on the jointing edge of described mesochite 12 two ends and face-piece 11 and drain pan 13, the described groove 15 built-in waterproof aprons 16 that are placed with, the jointing edge of described face-piece 11 and drain pan 13 are provided with the convex edge 17 that can embed in the described groove 15.After each housing is fixing by screw, thereby the 16 compacted distortion of described waterproof apron reach waterproof effect, even also can prevent the joint water inlet of each housing rainy day.
As shown in Figure 1; described discharge and recharge and charge-discharge protection circuit plate 3 comprises pcb board 31 and mainboard 32; described pcb board 31 and mainboard 32 are installed in the cavity between described location-plate 18 and the face-piece 11; wherein said pcb board 31 is fixed on the location-plate 18, and described mainboard 32 is fixed on the top board inboard of face-piece 11.The top board of described face-piece 11 is provided with perforate, this tapping is equipped with an indicator light mounting panel 321 that is connected with described circuit board 3, waterproof paster 322 is posted on the surface of this indicator light mounting panel 321, as shown in Figure 5, be provided with waterproof apron 19 between the top board medial surface of the periphery of this indicator light mounting panel 321 and described face-piece 11, can realize the waterproof of shell 1 upper cavity interior circuit board 3 thus.
As Fig. 1, to carry for convenience, described face-piece 11 both sides are hinged with handle 7, and face-piece 11 end face places also are provided with a recess that just in time can hold handle 7.
For convenience battery apparatus is mounted on the parts such as vehicle frame as electric bicycle, as Fig. 3, Fig. 6 and shown in Figure 7, battery apparatus of the present utility model also comprises the suspension assembly that is arranged on described shell 1 back side, and described suspension assembly comprises: with the affixed holder 92 of vehicle frame, connect the coupling seat 91 of described shell 1 and holder 92 and be installed in and be used on the described coupling seat 91 described shell 1 is locked in locking device 93 on the suspension assembly.The front end face 922 of described holder 92 can be made and the shape of link lateral surface coupling such as the part face of cylinder of indent, the vehicle frame etc. that this indent face of cylinder 922 is welded and fixed to electric bicycle has columniform outer surface battery apparatus promptly is installed, and can on demand battery apparatus be installed with suitable direction thus to hinder the cyclist to get on or off the bus in position and not.As shown in Figure 7, described coupling seat 91 has the coupling seat base portion 911 of cavity 913 and hides the coupling seat top cover 912 of described cavity 913, and both are fixedly connected by a plurality of small screws 85 that insert from coupling seat top cover 912 edges.The bottom faces of described coupling seat base portion 911 is provided with the aperture 914 that a plurality of and described cavity 913 communicates, and a plurality of hidden screws 84 in described cavity 913 pass described aperture 914 respectively and screw in the screw of offering on the described holder 92 921.Described shell 1 back side is provided with dovetail groove 101, described coupling seat top cover 912 front portions then are provided with the dovetail tenon 915 of pegging graft with described dovetail groove 101, cooperation by dovetail tenon 915 and dovetail groove 101 can be pulled down charging with shell 1 from coupling seat 91 easily, also can shell 1 be loaded onto easily during use again.And at both inserting states, the small screw 85 on the described coupling seat top cover 912 is hidden state and can't removes.Described locking device 93 is installed in the described cavity 913, can adopt mechanical lock, under lock-out state, its dead bolt 931 stretches out the through hole 916 between 91 liang of dovetail tenons 915 of coupling seat and inserts in the lock hole 102 of corresponding position, shell 1 back side, and this moment, shell 1 can't disassemble from coupling seat 91.

Claims (7)

1. anti-knock power battery apparatus comprises: shell (1), be placed on a plurality of battery assembly modules (2) in the shell (1) and discharging and recharging and charge-discharge protection circuit plate (3) of being electrically connected with described a plurality of battery assembly modules (2); It is characterized in that:
Dispose the supporting structure that limits described a plurality of battery assembly modules (2) position in the described shell (1), this supporting structure comprises: lower bracket (51), upper bracket (55) and be positioned at described lower bracket (51) and upper bracket (55) between at least one middle bracket (52); Described lower bracket (51) evenly is laid with the location hole (53) identical with the number of battery cells of a battery assembly module (2) with upper bracket (55), each location hole (53) is battery of clamping just in time, described middle bracket (52) but upper and lower two faces each evenly be laid with half hole, location (56) of each battery of a battery assembly module of clamping (2)
A battery assembly module of each clamping (2) between described lower bracket (51) and the middle bracket (52) and between described middle bracket (52) and the upper bracket (55), the integral body that described a plurality of battery assembly module (2) is vertical pile is contained by described shell (1), and is provided with cushion between the inwall of the end face of a plurality of battery assembly modules (2) that should integral body and bottom surface and described shell (1).
2. anti-knock power battery apparatus according to claim 1, it is characterized in that: the location hole (53) of described lower bracket (51) and upper bracket (55) outer rim and half hole, location (56) of middle bracket (52) outer rim are provided with the breach (54) of the volume that is intended to reduce battery apparatus, and the internal face of the outer rim of described middle bracket (52) and described shell (1) is suitable.
3. anti-knock power battery apparatus according to claim 1 and 2 is characterized in that: described shell (1) is formed by fixedly connecting by screw successively by face-piece (11), mesochite (12) and drain pan (13); Described face-piece (11) is fixed with a location-plate (18) with the junction of mesochite (12), described circuit board (3) be fixed on this location-plate (18) above, described a plurality of battery assembly modules (2) are positioned at the cavity between this location-plate (18) and the described drain pan (13).
4. anti-knock power battery apparatus according to claim 3, it is characterized in that: respectively be provided with a circle groove (15) on the jointing edge of described mesochite (12) two ends and face-piece (11) and drain pan (13), the built-in waterproof apron (16) that is placed with of described groove (15), the jointing edge of described face-piece (11) and drain pan (13) are provided with the convex edge (17) that can embed in the described groove (15).
5. anti-knock power battery apparatus according to claim 1 and 2, it is characterized in that: the top board of described face-piece (11) is provided with perforate, this tapping is equipped with an indicator light mounting panel (321) that is connected with described circuit board (3), is provided with waterproof apron (19) between the top board medial surface of the periphery of this indicator light mounting panel (321) and described face-piece (11).
6. anti-knock power battery apparatus according to claim 1 and 2 is characterized in that: an end of described shell (1) is hinged with handle (7), and shell (1) also is provided with a recess that just in time can hold handle (7) in this end.
7. anti-knock power battery apparatus according to claim 1 and 2, it is characterized in that: also comprise the suspension assembly that is arranged on described shell (1) back side, described suspension assembly comprises: the holder affixed with vehicle frame (92), connect the coupling seat (91) of described shell (1) and holder (92) and be installed in and be used on the described coupling seat (91) described shell (1) is locked in locking device (93) on the suspension assembly;
Described coupling seat (91) has the coupling seat base portion (911) of cavity (913) and hides the coupling seat top cover (912) of described cavity (913), and both are fixedly connected by a plurality of small screws (85) that insert from coupling seat top cover (912) edge; Described locking device (93) is installed in the described cavity (913), allows locking device open port and exposes;
The bottom faces of described coupling seat base portion (911) is provided with the aperture (914) that a plurality of and described cavity (913) communicates, and a plurality of hidden screws (84) in described cavity (913) pass described aperture (914) respectively and screw in the screw of offering on the described holder (92) (921);
Described coupling seat top cover (912) is provided with the dovetail tenon (915) of dovetail groove (101) grafting that is provided with shell (1) back side, and at both inserting states, the small screw (85) on the described coupling seat top cover (912) is hidden state.
CNU2007201202237U 2007-05-15 2007-05-15 Anti-vibration dynamic battery group device Expired - Lifetime CN201054373Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201202237U CN201054373Y (en) 2007-05-15 2007-05-15 Anti-vibration dynamic battery group device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201202237U CN201054373Y (en) 2007-05-15 2007-05-15 Anti-vibration dynamic battery group device

Publications (1)

Publication Number Publication Date
CN201054373Y true CN201054373Y (en) 2008-04-30

Family

ID=39394032

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201202237U Expired - Lifetime CN201054373Y (en) 2007-05-15 2007-05-15 Anti-vibration dynamic battery group device

Country Status (1)

Country Link
CN (1) CN201054373Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102244216A (en) * 2010-05-11 2011-11-16 欣旺达电子股份有限公司 Battery bracket component and multi-section combined public bracket of cylindrical battery cells
CN102723536A (en) * 2012-06-21 2012-10-10 因迪能源(苏州)有限公司 Bracket between battery cores
CN108928427A (en) * 2017-05-23 2018-12-04 广州市展辉电子有限公司 The variable installation position power battery pack device and electric bicycle of tape controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102244216A (en) * 2010-05-11 2011-11-16 欣旺达电子股份有限公司 Battery bracket component and multi-section combined public bracket of cylindrical battery cells
CN102244216B (en) * 2010-05-11 2014-01-29 欣旺达电子股份有限公司 Battery bracket component and multi-section combined public bracket of cylindrical battery cells
CN102723536A (en) * 2012-06-21 2012-10-10 因迪能源(苏州)有限公司 Bracket between battery cores
CN102723536B (en) * 2012-06-21 2015-03-04 因迪能源(苏州)有限公司 Bracket between battery cores
CN108928427A (en) * 2017-05-23 2018-12-04 广州市展辉电子有限公司 The variable installation position power battery pack device and electric bicycle of tape controller

Similar Documents

Publication Publication Date Title
CN100568606C (en) Anti-knock power battery apparatus
CN103270619B (en) Battery module case
CN203983363U (en) Flexible packing lithium ion battery module and the battery modules with it
CN109546022B (en) Battery pack and vehicle with same
CN207320191U (en) Soft package lithium battery module and its battery core unit, the frame of battery core unit
CN113937400B (en) Frame body, support, battery module and energy storage power supply
CN115803948A (en) Battery module and vehicle
CN107230757B (en) Battery pack with waterproof performance
EP3998651A1 (en) Battery pack with integrated mechanical and electrical fixing structure of battery modules
CN201054373Y (en) Anti-vibration dynamic battery group device
US20100173188A1 (en) Hub mount modular battery pack
CN201011661Y (en) Shock-resistant power battery pack
CN210576085U (en) Battery pack
CN209282277U (en) Electric tool high capacity cell pack arrangement
CN205050892U (en) Battery box of pegging graft and installing
CN109802061B (en) Power battery pack of automobile start-stop system
CN110571381A (en) Battery pack
CN215896562U (en) Lithium battery box module and electric bicycle
CN212905333U (en) Portable detection device of series lithium battery pack
CN101306642B (en) Power battery pack device convenient for changing installation position
CN210634397U (en) Battery protection plate tray for new energy automobile
CN209843817U (en) New energy automobile battery module that can singlehanded quick change
KR20140128640A (en) Battery pack module of height adjustable type
CN201052744Y (en) Power battery device convenient for changing mounting orientation
CN219476867U (en) Battery pack with protection function

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20080430