CN201051525Y - Battery group - Google Patents
Battery group Download PDFInfo
- Publication number
- CN201051525Y CN201051525Y CNU2007201472734U CN200720147273U CN201051525Y CN 201051525 Y CN201051525 Y CN 201051525Y CN U2007201472734 U CNU2007201472734 U CN U2007201472734U CN 200720147273 U CN200720147273 U CN 200720147273U CN 201051525 Y CN201051525 Y CN 201051525Y
- Authority
- CN
- China
- Prior art keywords
- electrode terminal
- terminal
- cell
- battery pack
- pole piece
- 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
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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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- 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
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- Connection Of Batteries Or Terminals (AREA)
Abstract
A group battery comprises a plurality of single batteries. Every single battery comprises a battery outer case, an electrical core and an electrode terminal, wherein the electrical core arranged inside the battery outer case comprises a pole piece of positive pole, a pole piece of negative pole, and a membrane arranged between the pole piece of positive pole and the pole piece of negative pole. The electrode terminal comprises a positive pole terminal and a negative pole terminal, the positive terminal is electrically connected with the pole piece of positive pole, the negative pole terminal is electrically connected with the pole piece of negative pole, and the single batteries are cascade or parallel connected through the electrode terminals, wherein the electrode terminals are piece bodies, and connected relation between the electrode terminals is applying connection. The group battery of the utility model has smaller internal resistance and reliable connection.
Description
Technical field
The utility model is about a kind of battery pack.
Background technology
Along with the raising of people's environmental consciousness, it will be following developing direction that electric automobile or hybrid vehicle replace existing fuel vehicle.As the core drive energy of electric automobile, it is particularly outstanding that the importance of power battery pack seems, can form power battery pack by polyphone or a plurality of cell in parallel.
CN 1767245A discloses a kind of battery component, and this battery component comprises a plurality of element cells 1 that are arranged in the shell.Each element cell comprises from positive terminal 2 that wherein stretches out and negative terminal 3, and connects the positive terminal 2 of lamination unit battery of adjacent layout and the connector 20 of negative terminal 3.Connector also comprises fixture 21, is formed with external screw thread on positive terminal 2 and negative terminal 3, is formed with internal thread on fixture 21, by fastening fixture 21 connector is fixed on positive terminal 2 and the negative terminal 3.In above-mentioned battery component, the fixture of positive terminal and/or negative terminal and connector is for being threaded, and the contact internal resistance is big, if occurred looseningly between them, it is bigger then to contact the internal resistance meeting, so the internal resistance of battery component is bigger; Because each cell all needs to have externally threaded anode and cathode terminals as conducting element and the brace that is used to connect, therefore make that the weight and volume of battery pack is bigger in addition.
The utility model content
The purpose of this utility model is in order to overcome the bigger shortcoming of existing battery pack internal resistance, to provide a kind of internal resistance less battery pack.
The utility model provides a kind of battery pack, this battery pack comprises a plurality of cells, described cell comprises battery case, electricity core and electrode terminal, described electric core is contained in the battery case, the electricity core comprises anode pole piece, cathode pole piece and the barrier film between anode pole piece and cathode pole piece, described electrode terminal comprises positive terminal and negative terminal, positive terminal links to each other with the anode pole piece electricity, negative terminal links to each other with the cathode pole piece electricity, connect by the electrode terminal serial or parallel connection between the cell, wherein, described electrode terminal is plates, and the annexation between the electrode terminal is for being fitted and connected.
The battery pack that provides according to the utility model, the electrode terminal of cell is that positive terminal and negative terminal are plates, by the electrode terminal of cell is fitted and a plurality of cells is electrically connected, there is the contact internal resistance between the cell hardly, and the electrode terminal after fitting can not become flexible, and therefore, compares with adopting the battery pack that is threaded between the existing cell, the internal resistance of battery pack of the present utility model is less, connects reliable.
In addition, battery pack of the present utility model adopts plates as electrode terminal, does not need to add connector in addition, but directly electrode terminal is fitted, and therefore, can reduce the weight and volume of battery pack.
Description of drawings
Fig. 1 is the schematic diagram of the battery pack of prior art;
Fig. 2 is the schematic diagram of battery pack of the present utility model;
Fig. 3 is the side sectional view of battery pack of the present utility model;
Fig. 4 is the cutaway view of the cell of battery pack of the present utility model;
Fig. 5 and Fig. 6 are the schematic diagram by the seal sealing between the cover plate of cell of battery pack of the present utility model and the electrode terminal.
Embodiment
Below in conjunction with accompanying drawing the battery pack that the utility model provides is described in detail.
As Fig. 2, shown in 3 and 4, the battery pack that the utility model provides comprises a plurality of cells 1, described cell 1 comprises battery case 4, electricity core and electrode terminal, described electric core is contained in the battery case 4, the electricity core comprises anode pole piece 5, cathode pole piece 6 and the barrier film 13 between anode pole piece 5 and cathode pole piece 6, described electrode terminal comprises positive terminal 2 and negative terminal 3, positive terminal 2 links to each other with anode pole piece 5 electricity, negative terminal 3 links to each other with cathode pole piece 6 electricity, connect by the electrode terminal serial or parallel connection between the cell, wherein, described electrode terminal is plates, and the annexation between the electrode terminal is for being fitted and connected.
Can be the annexation of serial or parallel connection between the described cell, can be by realizing serial or parallel connection between a plurality of cells by the electrode terminal that connects cell in a different manner.As shown in Figure 2, be series connection between the cell, electrode terminal of a cell is connected with the opposite polarity electrode terminal of an adjacent cell, and the opposite polarity electrode terminal of another electrode terminal cell adjacent with another is connected.The mode that cell is connected includes but not limited to following mode: the negative terminal 3 that is positioned at the cell of an end is connected with the positive terminal 2 of adjacent cell, the positive terminal 2 that perhaps is positioned at the cell of an end is connected with the negative terminal of adjacent cell, and the like, the opposite polarity pair of electrodes terminal welding of two adjacent cells, thereby two cells at the two ends of the battery pack that obtains respectively have an electrode terminal not to be connected with other electrode terminal, and the polarity of these two electrode terminals is opposite, as the both positive and negative polarity of battery pack.
Connected mode between the electrode terminal is for fitting, as long as the pellet electrode terminal that will need to connect fits together and makes certain bonding strength arranged between the electrode terminal, under the preferable case, the pellet electrode terminal welded.Welding can be existing various welding methods, and for example cold welding, supersonic welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding etc. preferably adopt cold welding.Use cold welding only need provide enough static pressures just can realize reliable welding, and it is little, shockproof and do not have a relative displacement to be welded the object caloric value in the welding process.
Described cell can be any type of battery, as rectangular cell and cylindrical battery.For the ease of the electrode terminal and the assembled battery group of plates are installed, cell is preferably rectangular cell.The width of the electrode terminal of plates can be preferably 10-25% for the 5-40% of cell width; The thickness of electrode terminal can be preferably 3-15% for the 1-20 of cell thickness.Electrode terminal can be any electric conducting material, is preferably in copper, nickel and the aluminium one or more.
After a plurality of cells connections, can also battery pack be fixed according to existing method, for example, between adjacent cell, radiator structure is set, and use the cell after fastening structure will connect to be fixed together, prevent that occurrence positions moves between the cell.
As shown in Figure 3, an end of described battery case 4 is a cover plate 7, and cover plate 7 has through hole, and an end of electrode terminal passes this through hole to battery case 4 outsides, and is sealed by seal between cover plate 7 and the electrode terminal.
As illustrated in Figures 5 and 6, described seal comprises rivet 8 and insulation elastomeric element 9, and electrode terminal from inside to outside is insulated elastomeric element 9 and rivet 8 clampings successively, and rivet 8 is compacted.Described insulation elastomeric element 9 can be rubber-like insulating material, for example plastics, rubber etc.Fig. 5 represents the compacted state before of rivet, and Fig. 6 represents the compacted state afterwards of rivet.As shown in Figure 6, after rivet 8 was compacted, strains took place in insulation elastomeric element 9, and the insulation elastomeric element is close to the electrode terminal and the rivet inwall of plates, thereby reaches the purpose that makes the electrode terminal sealing.Adopt the sealing form, can make the sealing between cover plate and the electrode terminal tightr, prevent that effectively impurity such as extraneous moisture from entering inside battery.
Under the preferred situation, described rivet 8, insulation elastomeric element 9 and electrode terminal are structure as a whole.That is, can earlier rivet 8, insulation elastomeric element 9 and electrode terminal be integrated structure by Shooting Technique, this overall structure be cooperated with the through hole of cover plate again, then as shown in Figure 6, compression rivet makes the electrode terminal sealing.Adopt this preferred implementation, can more easily realize sealing effectiveness closely.
Anode and cathode terminals can directly link to each other with positive/negative plate, for example, and can be with positive terminal and anode pole piece welding, with negative terminal and cathode pole piece welding.Under the preferable case, as shown in Figure 4, have positive pole ear 10 on the described anode pole piece 5, positive pole ear 10 is connected with positive terminal 2, has negative lug 11 on the described cathode pole piece 6, and negative lug 11 is connected with negative terminal 3.
Positive pole ear and negative lug can be various electric conducting materials, are preferably in copper, nickel and the aluminium one or more.The connected mode of electrode terminal and lug and lug and pole piece is preferably welding, for example supersonic welding, cold welding, Laser Welding, soldering, flash butt welding, friction welding (FW), electric resistance welding.
As shown in Figure 3 and Figure 4, negative lug 11 is respectively arranged with insulated ring 12 with the weld of negative terminal 3 and the weld of positive pole ear 10 and positive terminal 2.Insulated ring 12 is the two-part structure, in when assembling, with the insulated ring of two-part be trapped among described weld around, play the effect of insulation, damping, the security performance of raising battery.Insulated ring can be made by existing various insulating material, as plastics, rubber etc.
Described cell can be the existing various cells that are suitable for forming battery pack, for example alkaline secondary cell, lithium ion battery etc.The structure of the positive/negative plate of various cells has been conventionally known to one of skill in the art, does not repeat them here.
As can be seen from the above description, in the battery pack that the utility model provides, the electrode of cell Terminal is that positive terminal and negative terminal are plates, by the welding of the electrode terminal of cell is incited somebody to action A plurality of cells are electrically connected, and have hardly contact internal resistance and welding between the cell After electrode terminal can not become flexible, therefore, and adopt the electricity be threaded between the existing cell The pond group is compared, and can reduce significantly the internal resistance of battery pack.
In addition, battery pack of the present utility model adopts plates as electrode terminal, does not need extra increase Connector can directly with the electrode terminal welding, therefore, can reduce the weight and volume of battery pack.
Claims (8)
1. battery pack, this battery pack comprises a plurality of cells (1), described cell (1) comprises battery case (4), electricity core and electrode terminal, described electric core is forgiven in battery case (4), the electricity core comprises anode pole piece (5), cathode pole piece (6) and be positioned at anode pole piece (5) and cathode pole piece (6) between barrier film (13), described electrode terminal comprises positive terminal (2) and negative terminal (3), positive terminal (2) links to each other with anode pole piece (5) electricity, negative terminal (3) links to each other with cathode pole piece (6) electricity, connect by the electrode terminal serial or parallel connection between the cell, it is characterized in that, described electrode terminal is plates, and the annexation between the electrode terminal is for being fitted and connected.
2. battery pack according to claim 1, it is characterized in that, electrode terminal of a cell is connected with the opposite polarity electrode terminal of an adjacent cell, and the opposite polarity electrode terminal of another electrode terminal cell adjacent with another is connected.
3. battery pack according to claim 1 is characterized in that, described cell (1) is a rectangular cell, and the width of electrode terminal is the 5-40% of cell width, and the thickness of electrode terminal is the 1-20% of cell thickness.
4. battery pack according to claim 1, it is characterized in that an end of described battery case (4) is cover plate (7), cover plate (7) has through hole, one end of electrode terminal passes this through hole to battery case (4) outside, is sealed by seal between cover plate (7) and the electrode terminal.
5. battery pack according to claim 4, it is characterized in that, described seal comprises rivet (8) and insulation elastomeric element (9), and electrode terminal from inside to outside is insulated elastomeric element (9) and rivet (8) clamping successively, and rivet (8) is pressed on the insulation elastomeric element (9).
6. battery pack according to claim 5 is characterized in that, described rivet (8), insulation elastomeric element (9) and electrode terminal are structure as a whole.
7. battery pack according to claim 1, it is characterized in that having positive pole ear (10) on the described anode pole piece (5), positive pole ear (10) is connected with positive terminal (2), have negative lug (11) on the described cathode pole piece (6), negative lug (11) is connected with negative terminal (3).
8. battery pack according to claim 7 is characterized in that, negative lug (11) is respectively arranged with insulated ring (12) with the junction of negative terminal (3) and the junction of positive pole ear (10) and positive terminal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201472734U CN201051525Y (en) | 2007-05-29 | 2007-05-29 | Battery group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201472734U CN201051525Y (en) | 2007-05-29 | 2007-05-29 | Battery group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051525Y true CN201051525Y (en) | 2008-04-23 |
Family
ID=39338018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201472734U Expired - Lifetime CN201051525Y (en) | 2007-05-29 | 2007-05-29 | Battery group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201051525Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010022668A1 (en) | 2008-08-26 | 2010-03-04 | Byd Company Limited | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
| CN101752600A (en) * | 2008-12-05 | 2010-06-23 | 比亚迪股份有限公司 | Power battery pack |
| CN101997094A (en) * | 2009-08-18 | 2011-03-30 | 三星Sdi株式会社 | Rechargeable battery and battery module |
| CN101752601B (en) * | 2008-12-08 | 2012-09-05 | 比亚迪股份有限公司 | Battery pack |
| US9331314B2 (en) | 2009-01-23 | 2016-05-03 | Johnson Controls—SAFT Advanced Power Solutions LLC | Battery module having electrochemical cells with integrally formed terminals |
-
2007
- 2007-05-29 CN CNU2007201472734U patent/CN201051525Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010022668A1 (en) | 2008-08-26 | 2010-03-04 | Byd Company Limited | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
| EP2321865A1 (en) * | 2008-08-26 | 2011-05-18 | Byd Company Limited | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
| EP2321865A4 (en) * | 2008-08-26 | 2013-07-10 | Byd Co Ltd | Battery cover board assembly, battery having the same, battery pack and method of forming the same |
| CN101752600A (en) * | 2008-12-05 | 2010-06-23 | 比亚迪股份有限公司 | Power battery pack |
| CN101752600B (en) * | 2008-12-05 | 2013-12-04 | 比亚迪股份有限公司 | Power battery pack |
| CN101752601B (en) * | 2008-12-08 | 2012-09-05 | 比亚迪股份有限公司 | Battery pack |
| US9331314B2 (en) | 2009-01-23 | 2016-05-03 | Johnson Controls—SAFT Advanced Power Solutions LLC | Battery module having electrochemical cells with integrally formed terminals |
| CN101997094A (en) * | 2009-08-18 | 2011-03-30 | 三星Sdi株式会社 | Rechargeable battery and battery module |
| CN101997094B (en) * | 2009-08-18 | 2013-10-09 | 三星Sdi株式会社 | Rechargeable battery and battery module |
| US8623537B2 (en) | 2009-08-18 | 2014-01-07 | Samsung Sdi Co., Ltd. | Rechargeable battery and battery module |
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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: 20080423 |