CN100421295C - Secondary battery module - Google Patents
Secondary battery module Download PDFInfo
- Publication number
- CN100421295C CN100421295C CNB2005100679070A CN200510067907A CN100421295C CN 100421295 C CN100421295 C CN 100421295C CN B2005100679070 A CNB2005100679070 A CN B2005100679070A CN 200510067907 A CN200510067907 A CN 200510067907A CN 100421295 C CN100421295 C CN 100421295C
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- CN
- China
- Prior art keywords
- terminal
- connector
- groove
- element cell
- cell
- 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 - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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)
Abstract
A secondary battery module includes a plurality of unit cells, and a connector electrically connecting the unit cells to each other. The connector has a surface contact portion, and the shape of the surface contact portion corresponds to the shape of terminals of the unit cell. The connector is fastened to a terminal of the unit cell by insertion.
Description
Technical field
The present invention relates to storage battery, particularly relate to high power and large-sized accumulator cell assembly, wherein the syndeton between the element cell is improved.
Background technology
Along with the development of high power storage battery group, the nonaqueous electrolyte battery group of high power density also is developed recently.
Several to dozens of high power storage battery (to call " element cell " in the following text) is connected in series and forms an assembly together, needing such as hybrid vehicle etc. to be used for the motor of high power power machine.
Element cell generally includes: comprise positive pole, negative pole and place the electrod assembly of the dividing plate between this two electrode, inside has the housing in the space that holds this electrod assembly, be used to seal the cover of this housing, and from the positive terminal and the negative terminal of this cover positive pole that stretch out, that be electrically connected to this electrod assembly and negative pole.
For cell group is become assembly, the element cell arranged alternate, so that the positive terminal of an element cell and negative terminal and another positive terminal and negative terminal adjacent to the element cell of this element cell intersect, interconnect with conductive member between the terminal then.
When conductive member is inserted into terminal, break away from from terminal in order to prevent conductive member, with nut it is fastened on the terminal.For this reason, the periphery at terminal is formed with screw thread.
As mentioned above, conventional accumulator cell assembly has several to dozens of element cells, these element cells with screw fixedly the method for conductive member be electrically connected mutually.
Because each terminal of element cell all needs screw to fix in the accumulator cell assembly, the workload of making battery component is more, and needs a large amount of time, thereby productivity ratio is lower.
In addition, when in the accumulator cell assembly during some element cell cisco unity malfunction, out of order element cell need be separated from other element cell, and be replaced with new element cell or the element cell of fixing.But this need back out nut from terminal, and then screws on nut, and this mode is inconvenient, thereby has reduced production efficiency.
In addition, because conventional conductive member is a plate shape, its contact area can not increase when conductive member touches terminal.Therefore, the problem that conductance descends between terminal and the conductive member can appear.
Especially, owing to tens element cells of accumulator cell assembly needs that are used for such as motor drives such as hybrid vehicle, thereby the problems referred to above can be more serious.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of improved accumulator cell assembly.
Another object of the present invention provides a kind of accumulator cell assembly, and wherein the connected mode of element cell obtains simplifying, can be time saving and energy saving aspect connection and replacing when a plurality of element cells of connection form large scale battery assembly.
Another purpose of the present invention provides a kind of accumulator cell assembly, and wherein when the linkage unit battery, the contact area of terminal can maximize, thereby improves conductance.
According to an aspect of the present invention, accumulator cell assembly comprises a plurality of element cells and is electrically connected on connector between the element cell terminal, wherein this connector has surface contact portion, and this surface contact portion is corresponding to terminal, and is fastened on the terminal of element cell in the mode of inserting.
Surface contact portion can be a groove.In addition, surface contact portion can be the hole.
Surface contact portion can be fixed on the terminal by the mode of firmly inserting.
Also having, is under the situation in hole in surface contact portion, and connector can be fixed on the terminal that is inserted in this hole by welding manner.
Accumulator cell assembly can be used for motor drive.
Connector is connected between the negative pole unit or positive terminal of the positive terminal of an element cell or negative pole unit and adjacent element cell.So connector has two grooves or hole, its spacing equals the distance between the terminal between element cell.
Groove that forms on the connector or hole have the cross section identical with terminal.Preferably, the size in this groove or hole is equal to or less than the size of terminal, and connector is fixed on the terminal by the mode of firmly inserting like this, thereby can closely contact and increase fastening force.
Element cell comprises: comprise positive pole, negative pole and place the electrod assembly of the dividing plate between this two electrode, inside has the housing in the space that holds this electrod assembly, be fixed on this housing sealing the cover of this housing, and to the positive terminal and the negative terminal of cover outside collector electrode that stretch out, that be electrically connected on positive pole and negative pole.
The element cell of battery component is connected in series mutually.
The groove that forms on the connector or the degree of depth in hole be less than the length of terminal, so in the bottom of connector be furnished with between the cover of terminal and have the gap, this gap is used to prevent being electrically connected between cover that metal material makes and the connector.
Also have, preferably, between cover and connector, can arrange the non-conductor that insulating material is made.
Preferably, have on the terminal surfaces by high conductivity material, the coating of making such as silver increases conductance.
Groove and hole on terminal and the connector on corresponding the terminal are circular or square cross section, but its shape is not limited to this.For example, groove or hole can be polygonized structures such as pentagon, hexagon, and perhaps spline or cross structure are to increase contact area.
In addition, according to a further aspect in the invention, the thickness of the terminal-containing section in formation groove or hole is greater than the thickness of the cross structure of splicing ear holding portion on the connector.
Make the cross structure of connector crooked easily like this.So the distance between the terminal of adjacent-cell battery is because error and not simultaneously, the cross structure of connector can buckle is inserted between the terminal connector.
Preferably, cross structure has at least one groove, so that it is more prone to crooked.
The shape of groove is not limited to a kind of shape, can be such as circular arc, triangle or different shape such as square.
Simultaneously, according to a further aspect in the invention, the size of groove or hole cross section can reduce continuously along a direction, to form the inclined-plane.
Terminal also has inclined-plane along its length, and the gradient on this inclined-plane is identical with the gradient in groove or hole.
Thus, terminal is inserted in the groove or hole of connector, makes adjacent element cell be connected in series, and connector is by firm frictional force between inner periphery in groove or the hole thereon and the terminal excircle and fastening and be fixed on the element cell.
Description of drawings
In conjunction with the accompanying drawings and following detailed description, complete evaluation of the present invention and above-mentioned and other characteristics and advantage will become very clear, also can be understood better, and the wherein identical identical or similar elements of reference number representative, wherein:
Fig. 1 is the decomposition diagram according to the accumulator cell assembly of first embodiment of the invention;
Fig. 2 is the partial sectional view of I-I along the line among Fig. 1;
Fig. 3 A, Fig. 3 B, Fig. 3 C and Fig. 3 D are the partial plan layout according to the accumulator cell assembly of the groove of first embodiment of the invention connector and terminal shape;
Fig. 4 is the partial sectional view according to the accumulator cell assembly of second embodiment of the invention; With
Fig. 5 is the decomposition diagram according to the accumulator cell assembly of third embodiment of the invention.
Embodiment
Below describe each embodiment of the present invention in detail, being illustrated in the drawings for example wherein.Followingly introduce the present invention with reference to each embodiment of description of drawings.
Fig. 1 is the decomposition diagram according to the accumulator cell assembly of first embodiment of the invention, and Fig. 2 is the partial sectional view of I-I along the line among Fig. 1, and Fig. 3 A is the partial plan layout according to the accumulator cell assembly of the groove of first embodiment of the invention connector and terminal shape.
Large scale accumulator cell assembly 10 comprises element cell 11, each element cell has: comprise positive pole, negative pole and place the electrod assembly (not shown) of the dividing plate between this two electrode, inside has the housing 12 in the space that holds this electrod assembly, be fixed to the cover 13 to seal this housing on the housing 12, and to the positive terminal 14 and the negative terminal 15 of this cover outside collector electrode that stretch out, that be electrically connected to positive pole and negative pole.
In the present embodiment, the structure of each element cell 11 can be following structure: two terminals are that positive terminal 14 and negative terminal 15 reach above the cover 13, and the interval preset distance.
In order to make large-sized battery component 10, each element cell 11 with said structure is arranged to terminal 14 and 15 towards last, and the positive terminal 14 of an element cell 11 and negative terminal 15 reach above the cover 13 successively with the negative terminal 15 and the positive terminal 14 of adjacent-cell battery 11.
Therefore, the two ends at relative element cell 11 centers, the terminal that alternately also forms positive terminal and negative terminal with preset distance dividually is listed as.
That is, terminal row are straight lines that the terminal linear arrangement by alter polarity forms.
In the battery component of said structure, accumulator cell assembly of the present invention has connector 20, and this connector is electrically connected positive terminal and the negative terminal between adjacent-cell battery 11, with interconnecting members battery 11 in series.
Therefore, when connector 20 is fastened on the terminal, terminal is inserted in the groove 21 of connector 20 securely, thus make connector 20 by the groove 21 of tight contact and connector 20 inner periphery and terminal 14 and 15 excircles between firm frictional force be fastened on the terminal.
That is, terminal is inserted in the groove 21 of connector 20, and the inner surface of groove 21 contacts with the excircle of terminal, and the frictional force that produces between two contact-making surfaces makes connector 20 keep being installed on the element cell.
Therefore, simply terminal is inserted in the connector, forms battery component 10 thereby element cell 11 is electrically connected mutually, and extract fastening connector 20 from terminal and just can change element cell like a cork.
Can use terminal is inserted in the groove 21 of connector 20, or extract connector 20 from terminal such as other instruments such as hammers.
Fig. 1 represents that connector 20 is installed on the battery component.As shown in the figure, the positive terminal 14 of element cell 11 and the negative terminal 15 of adjacent-cell battery 11 are inserted in the connector 20, form mutually and be electrically connected, 14 of the positive terminals of this adjacent-cell battery 11 link to each other with the negative terminal 15 of next element cell 11 by connector 20 in the another terminal row, and whole unit battery 11 just is connected in series like this.
The degree of depth of the groove 21 that forms on the connector 20 is less than the length of terminal 14 and 15.
Like this, when connector 20 is installed on the terminal 14 and 15 of element cell,,, promptly between the lower end of connector 20 and cover 13, also can form the gap in the lower end of terminal even if terminal inserts in the groove 21 of connector 20 fully.
This gap makes connector 20 and cover 13 not be electrically connected separately and mutually.
Therefore can prevent the cover 13 of metal material and being electrically connected of connector 20.
Also have, as shown in Figure 2, preferably, between cover and connector 20, insert the non-conductor 40 that insulating material is made.
Can prevent contingent electrical connection between connector 20 and the cover reliably at insertion non-conductor between connector 20 and the cover.
Compare with the conventional batteries assembly, because the total inner surface of the groove 21 of connector 20 all contacts with terminal, thereby the accumulator cell assembly with said structure increased contact area, so the conductance between connector 20 and terminal 14 and 15 can reach maximum.
Also have, in order to increase conductance, accumulator cell assembly also is included in the coating 30 on the inner surface of groove 21 of terminal and/or connector 20, and this coating is made as silver (Ag) etc. by the material of high conductivity.
As shown in Figure 3A, in the present embodiment, the groove 21 of connector 20 and terminal 14 and 15 have circular cross-section, but are not limited to this.For example, they can be square, spline or the cross cross sections shown in Fig. 3 B to 3D.
Simultaneously, according to another embodiment of the present invention, the terminal that forms in the element cell can have the inclined-plane that becomes the same tilt angle along its length with the groove of the connector that inserts terminal, to be convenient to install and pull down connector.
As an example, the cross section of introducing groove and terminal below in detail is circular details.But the present invention is not limited to circle, and also can use terminal and the groove with above-mentioned other various cross sections.
As shown in Figure 4, the terminal 14 that forms on the element cell 11 and 15 is tapered in (among the figure from the front end of cover to free end) along the length direction that passes through, so terminal has the inclined-plane of pre-determined tilt angle (α).Equally, the groove 21 of connector 20 alongst little by little attenuates with the angle of inclination identical with above-mentioned angle of inclination (α) equally at the diameter in terminal 14 and 15 places of inserting, and so just forms the inclined-plane of same slope.
Because when terminal was inserted in the groove 21 of connector 20 at first, the diameter of terminal part was less than the diameter of groove 21 parts, so terminal can be inserted in the groove 21 like a cork.At last, terminal 14 and 15 outer surface closely touch on the inner surface of groove 21, and frictional force therebetween is fixed on connector 20 on the terminal.
Terminal and groove 21 can be only have certain gradient respectively on the surface of center line with respect to them inclined-plane, the inclined-plane that perhaps also can have symmetry on relative face is to form taper.But, except the inclined-plane is to there is no other particular restriction continuous.
Fig. 5 represents connector in accordance with another embodiment of the present invention.
As shown in Figure 5, connector 50 has pair of terminal holding portion 52, has a pair of hole 51 corresponding to adjacent-cell battery 11 each terminal 14 and 15 on it, and terminal 14 and 15 is inserted in the hole 51 thus.The sub-holding portion 52 of this pair of end is by cross structure 53 mutual bridge joints.
The hole 51 that forms on the connector 50 has and terminal 14 and 15 identical cross sections, and its size is equal to or less than the size of terminal, in the mode of firmly inserting connector 50 is fastened on terminal 14 and 15 thus.
In the present invention, open wide the terminal 14 and 15 that passes hole 51 and be soldered on the connector 50, to increase fastening force.
The thickness (D) of the terminal-containing section 52 on the hole 51 is greater than the thickness (d) of the cross structure 53 of the terminal-containing section on the connecting hole 51 52.
So the distance between the terminal 14 and 15 of adjacent-cell battery 11 is because error and not simultaneously, the cross structure 53 of connector 50 can be easily crooked with the distance between the hole 51 of regulating connector 50, is inserted between terminal 14 and 15 to make things convenient for connector 50.
Preferably, the cross structure 53 of connector 50 has a plurality of grooves 54, makes the cross structure 53 of connector 50 be more prone to crooked.
The cross section of the groove 54 that forms on the cross structure 53 is a circular arc, but does not limit to therewith, can also be different shapes such as triangle or square.
According to the present invention, connector can be fastened on the battery pack like a cork, can easily dismantle and replace with needed element cell when element cell is fixed.
In addition, the present invention has improved the terminal of element cell and the conductance between the connector, makes battery capacity reach maximization.
Also have,,,, reduced workload, thereby and reduced the part number and reduced expense so installation is simple because element cell can connect by a part according to the present invention.
Although above illustrates and illustrates several embodiments of the present invention, but those skilled in the art should understand that, present embodiment can have various variants, and does not break away from principle of the present invention and thinking, and its scope is by claim and the defined of replacing of equal value thereof.
Claims (3)
1. accumulator cell assembly comprises:
A plurality of element cells, each in these a plurality of element cells has terminal; With
The connector that described element cell is electrically connected mutually; This connector comprises pair of terminal holding portion with pair of holes and is connected this bridge to terminal-containing section, and from depression angle, this is to the thickness of the terminal-containing section thickness greater than described bridge.
2. according to the accumulator cell assembly of claim 1, wherein this connector is soldered on the described terminal.
3. according to the accumulator cell assembly of claim 1, wherein this cross structure has at least one groove, makes this cross structure crooked easily with the distance between the hole of adjusting described connector.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2004-0031309 | 2004-05-04 | ||
KR1020040031309 | 2004-05-04 | ||
KR1020040031309A KR100627306B1 (en) | 2004-05-04 | 2004-05-04 | Secondary battery |
KR10-2005-0025916 | 2005-03-29 | ||
KR1020050025916 | 2005-03-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1694293A CN1694293A (en) | 2005-11-09 |
CN100421295C true CN100421295C (en) | 2008-09-24 |
Family
ID=35353160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2005100679070A Expired - Fee Related CN100421295C (en) | 2004-05-04 | 2005-04-28 | Secondary battery module |
Country Status (2)
Country | Link |
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KR (1) | KR100627306B1 (en) |
CN (1) | CN100421295C (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100684743B1 (en) * | 2004-10-28 | 2007-02-20 | 삼성에스디아이 주식회사 | Secondary battery module |
KR100684846B1 (en) * | 2005-07-29 | 2007-02-20 | 삼성에스디아이 주식회사 | Secondary battery module |
JP2007157382A (en) * | 2005-12-01 | 2007-06-21 | Matsushita Battery Industrial Co Ltd | Battery pack |
KR100889243B1 (en) * | 2005-12-02 | 2009-03-17 | 주식회사 엘지화학 | Method of Preparing Battery Core Pack |
KR100747776B1 (en) * | 2006-04-28 | 2007-08-08 | 경상대학교산학협력단 | A cutting battery and a connecting adapter thereof |
KR100771223B1 (en) * | 2006-10-10 | 2007-10-29 | 현대에너셀 주식회사 | Terminal connecting device of battery module |
KR101050318B1 (en) | 2009-04-16 | 2011-07-19 | 에스비리모티브 주식회사 | Secondary battery module |
US20110052969A1 (en) * | 2009-09-01 | 2011-03-03 | Gm Global Technology Operations, Inc. | Cell tab joining for battery modules |
KR101097224B1 (en) | 2009-12-22 | 2011-12-21 | 에스비리모티브 주식회사 | Battery pack |
KR20120059049A (en) | 2010-11-30 | 2012-06-08 | 현대자동차주식회사 | Battery Module Structure |
CN102683907B (en) * | 2011-01-24 | 2015-01-07 | 冯国安 | Clamp system for electrical connection among cell units |
KR101264495B1 (en) | 2011-03-10 | 2013-05-14 | 로베르트 보쉬 게엠베하 | Secondary Battery And Battery Pack having thereof |
KR20130104489A (en) * | 2012-03-14 | 2013-09-25 | 삼성에스디아이 주식회사 | Connecting member, battery pack having the same and the manufacturing method thereof |
CN102790198A (en) * | 2012-08-24 | 2012-11-21 | 李辉 | Quick spline type connection structure of battery pack |
CN102800832A (en) * | 2012-08-24 | 2012-11-28 | 李辉 | Battery pack fast male-and-female connection structure |
DE102013225340B4 (en) * | 2013-12-10 | 2023-11-09 | Robert Bosch Gmbh | Battery module with a plurality of battery cells and battery system with at least one such battery module |
US9461377B2 (en) * | 2014-10-27 | 2016-10-04 | Flow-Rite Controls, Ltd. | Battery tap electrical connector |
WO2017208804A1 (en) * | 2016-05-31 | 2017-12-07 | パナソニックIpマネジメント株式会社 | Terminal connection structure, battery stack body, and method for forming terminal connection structure |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4347294A (en) * | 1981-02-12 | 1982-08-31 | Santiago Mejia | Novel electric storage battery assembly |
US4957829A (en) * | 1989-06-26 | 1990-09-18 | At&T Bell Laboratories | Modular battery plant system assembly comprising multiple unit cell modules |
US6328604B1 (en) * | 1999-09-21 | 2001-12-11 | Matsushita Electric Industrial Co., Ltd. | Connection structure for battery unit |
-
2004
- 2004-05-04 KR KR1020040031309A patent/KR100627306B1/en active IP Right Grant
-
2005
- 2005-04-28 CN CNB2005100679070A patent/CN100421295C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4347294A (en) * | 1981-02-12 | 1982-08-31 | Santiago Mejia | Novel electric storage battery assembly |
US4957829A (en) * | 1989-06-26 | 1990-09-18 | At&T Bell Laboratories | Modular battery plant system assembly comprising multiple unit cell modules |
US6328604B1 (en) * | 1999-09-21 | 2001-12-11 | Matsushita Electric Industrial Co., Ltd. | Connection structure for battery unit |
Also Published As
Publication number | Publication date |
---|---|
KR20050106541A (en) | 2005-11-10 |
CN1694293A (en) | 2005-11-09 |
KR100627306B1 (en) | 2006-09-25 |
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