CN202259589U - Safety structure of power battery pack - Google Patents
Safety structure of power battery pack Download PDFInfo
- Publication number
- CN202259589U CN202259589U CN2011203572146U CN201120357214U CN202259589U CN 202259589 U CN202259589 U CN 202259589U CN 2011203572146 U CN2011203572146 U CN 2011203572146U CN 201120357214 U CN201120357214 U CN 201120357214U CN 202259589 U CN202259589 U CN 202259589U
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- CN
- China
- Prior art keywords
- battery pack
- power battery
- safeguard construction
- mainboard
- conduction mainboard
- 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.)
- Withdrawn - After Issue
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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
Abstract
The utility model discloses a safety structure of a power battery pack. The battery pack comprises M groups of batteries, wherein each group of batteries comprises N * P single battery bodies which are arranged in a matrix way and are connected in parallel, and every two adjacent groups of batteries are connected in series; and an enhanced circuit board is connected onto cathodes or anodes of each group of batteries, and comprises a conductive mainboard and an insulation material which is covered on the front and back of the conductive mainboard and is integrated with the conductive mainboard. Compared with the prior, the single battery bodies can be mutually balanced and have good consistency by the aid of the enhanced circuit board. On the other hand, if the short-circuit phenomenon occurs in a certain single battery body inside the battery pack, an electrical connection arm arranged in the enhanced circuit board is fused, thus possible overcurrent single batteries bodies in a single battery body matrix are insulated from the battery matrix so as to prevent the diffusion of faulty single battery bodies and protect the safety of the battery pack.
Description
[technical field]
The utility model relates to the safe practice field of power battery pack, relates in particular to the safeguard construction of the power battery pack that a kind of suitable electric automobile, electric bus use.
[background technology]
Ferric phosphate lithium cell has obtained using widely as the new forms of energy of automobile.Yet electric automobile and electric bus all require than higher the voltage of battery, electric current etc., therefore, the battery pack that several ferric phosphate lithium cell series and parallels combine are installed in the power supply box of electric automobile and electric bus.
Battery pack has parallel connection back tandem plan earlier, and the scheme of series connection back parallel connection is earlier also arranged.Adopt the scheme of elder generation and back string, mutual balanced between the cell of parallel connection, consistency is better.If but short trouble appears in a certain joint cell, it will become the load of other and its batteries in parallel connection, and the energy of all batteries of parallel connection discharges in the fault cell rapidly with it, thereby causes more serious consequence.Adopt string back and scheme earlier, if certain joint cell breaks down, the energy of other cells can only discharge through the shunt circuit, and is absorbed by other battery in the series circuit, discharges when voltage is elevated to the series rated voltage to stop.Yet the battery pack balancing of string back and scheme is difficult earlier.In the same body battery of itemizing, add parallel branch; Can play balanced effect to a certain extent; But this has brought other problem again, that is: when short circuit appearred in certain cell inside, all cells parallelly connected with this cell were all by external short circuit; The energy of all batteries of parallel connection discharges in the fault cell rapidly with it; The temperature of fail battery sharply rises, may the initiating failure battery explosion, and stay huge potential safety hazard finally for the operate as normal of whole battery group.
In addition, violent jolting possibly take place in electric automobile, electric bus in the process of moving, and the battery pack that has several ferric phosphate lithium cell series and parallels to combine of installing in the existing power supply box is not carried out aseismic design usually.
In view of above drawback, the safeguard construction that is necessary a kind of power battery pack is provided in fact is to overcome above-mentioned defective.
[utility model content]
The purpose of the utility model provides a kind of safeguard construction of power battery pack; The safeguard construction of this power battery pack can help the equilibrium of electric current, voltage in the battery pack; And can prevent battery pack to cause serious consequence because of the short circuit of cell; Simultaneously, the design of reinforced wiring board can prevent that vehicle from causing battery pack loosening because of vibrations in the process of moving.
To achieve these goals; The utility model adopts following technical scheme: a kind of safeguard construction of power battery pack; This battery pack comprises the M Battery pack; Every Battery pack comprises that N * P is arranged and cell parallel with one another, is cascaded between every two adjacent Battery packs, is connected with reinforced wiring board on the anodal or negative pole of every Battery pack; Wherein, said reinforced wiring board comprise the conduction mainboard with cover conduction mainboard positive and negative and with conduction mainboard integrated insulating material.
Preferably; Said conduction mainboard comprises and is provided with electrode connecting piece and the substrate that N * P is used to connect cell polarity; Be provided with cannelure between said electrode connecting piece and the substrate; Also be provided with at least three between said electrode connecting piece and the substrate and electrically connect arm, electrically connect arm cannelure is divided into three parts.
Preferably, said electric connection arm is provided with the groove of indent.
Preferably, said electrode connecting piece is in the form of annular discs, and the centre of electrode connecting piece also is provided with the connecting hole that supplies the cell electrode to run through.
Preferably, has one blowout current in the said electric connection arm at least less than the blowout current of other electric connection arm.
Preferably, also be provided with some ventilation holes that are arranged on the said conduction mainboard.
Preferably, said insulating material is a plastic material fire-retardant and that intensity is high.
Preferably, also be provided with some fusions hole on the said conduction mainboard, the conduction mainboard with cover insulating material on the conduction mainboard positive and negative and merge after, said insulating material just can be filled to and merge in the hole.
Preferably, one of the said conduction mainboard distolateral formation pole piece that stretches out.
Preferably, said M is more than or equal to 4.
Compared with prior art, the safeguard construction of the utility model power battery pack owing to added reinforced wiring board, not only can ensure the anti-vibration ability of battery pack, also since described reinforced wiring board can let between the cell balanced mutually, high conformity.On the other hand, if the phenomenon of short circuit appears in inner certain cell of battery pack, will make the interior electric connection arm that is provided with of reinforced wiring board fuse; Thereby the cell of the possible overcurrent in the cell matrix is isolated from the battery matrix; Stop the diffusion of fault cell, protected the safety of battery pack, in addition; Owing to all be coated with fire-retardant insulating material on the positive and negative of conduction mainboard; So, produce spark even electrically connect arm fusing, can not bring hidden danger to the safety of battery pack yet.
[description of drawings]
Fig. 1 is the conduction mainboard structure sketch map of the safeguard construction of the utility model power battery pack;
Fig. 2 is the structural representation at another visual angle of conduction mainboard shown in Figure 1;
Fig. 3 is the structural representation of reinforced wiring board of the safeguard construction of the utility model power battery pack;
Fig. 4 is the common electrode plate structure sketch map of the safeguard construction of the utility model power battery pack;
Fig. 5 is the battery pack structure sketch map of the safeguard construction of the utility model power battery pack;
Fig. 6 is the structural representation at another visual angle of battery pack shown in Figure 5.
[embodiment]
Please refer to Fig. 1 to shown in Figure 6; The safeguard construction of a kind of power battery pack of the utility model; This battery pack 100 comprises the M Battery pack, and every Battery pack comprises that N * P is arranged and cell 10 parallel with one another, is connected with reinforced wiring board 20 on the positive pole of every Battery pack; Be connected with common pole plate 30 on the negative pole, be cascaded between every two adjacent Battery packs.
The roughly rectangular shape of reinforced wiring board 20, it comprise conduction mainboard 21 with cover conduction mainboard 21 positive and negative and with the conduction integrated insulating material of mainboard (not label).Wherein, Conduction mainboard 21 comprises and is provided with the electrode connecting piece 211 and substrate 212 that N * P is used to connect cell polarity; Be provided with cannelure 213 between electrode connecting piece 211 and the substrate 212; Also be provided with three between electrode connecting piece 211 and the substrate 212 and electrically connect arm 214, electrically connect arm 214 cannelure 213 is divided into three equal parts.Said electric connection arm 214 is provided with the groove 215 of indent.In the utility model, the blowout current that has in the said electric connection arm 214 at least is less than the blowout current of other electric connection arm.Electrode connecting piece 211 is in the form of annular discs, and the centre of electrode connecting piece 211 also is provided with first through hole 216 that supplies cell 10 electrodes to run through.
Common pole plate 30 is roughly similar with reinforced wiring board 20 shapes, and it is processed by electric conductivity good metal plate usually.Because battery pack can produce great amount of heat in the course of the work; These heat accumulations bring hidden danger can for the trouble free service of battery pack, therefore; Offer some ventilation holes 22 that are arranged on reinforced wiring board 20 and common pole plate 30 sons; These ventilation hole 22 numbers are indefinite, but it is roughly the same to offer the position of ventilation hole on every reinforced wiring board 20 and the common pole plate 30, helps to form heat dissipation channel.
During assembling; (this embodiment is selected N=4 for use with first group of N * P earlier; P=6) negative pole of individual cell 10 is connected to common pole plate 30 (can select copper coin for use), then sheathed reinforced wiring board 20 and guarantee that the positive pole of cell 10 connects first through hole 216 of reinforced wiring board top electrode brace on the positive pole with aforementioned monomer battery 10.Repeat above-mentioned assembling process, second group is all assembled to M (this embodiment is selected M=4 for use) Battery pack, last, with the aforementioned every Battery pack that assembles being cascaded one by one.
In the utility model, the two ends of aforesaid cell all are welded with threaded pole, and are during assembling that pole corresponding hole on common pole plate or the reinforced wiring board is last, on nut precession pole.
Because electrode connecting piece 211 is in the form of annular discs, so reinforced wiring board 20 is formed with the shrinkage pool corresponding with the electrode connecting piece number 23 at least one surface after the moulding, in the above-mentioned assembling process, final, nut just is contained in the shrinkage pool 23.
In actual use, according to the design of the safe voltage of ferric phosphate lithium cell requirement, must select for use M more than or equal to 4, just can reach good effect.
In the safeguard construction of the utility model power battery pack, to since the caused battery pack internal current of certain cell generation internal short-circuit excessive, when this cell generation internal short-circuit; The voltage of cell descends rapidly, because all cells parallelly connected with this cell are all by short circuit (external short circuit), at this moment; Electrically connect on the arm and just can flow through very big electric current; So the minimum electric connection arm of blowout current at first fuses, excessive electric current will branch to other 2 and electrically connect on the arm; Until last electric connection arm fusing; Like this, the cell of this internal short-circuit just can not receive the reverse charging of batteries in parallel connection with it, thereby has protected the safety of battery pack.
In the safeguard construction of the utility model power battery pack; For let on the tow sides of conduction mainboard 21 insulating material can with conductive plate combination closely; Usually on conduction mainboard 21, also be provided with some fusions hole (not label); Said fusion hole is through the conduction mainboard, and when conduction mainboard 21 with after covering the insulating material fusion on the conduction mainboard positive and negative, insulating material just can be filled to and merge in the hole.
The safeguard construction of the utility model power battery pack; Be not restricted to described in specification and the execution mode; Therefore for the personnel of familiar field, can easily realize additional advantage and modification; So under the situation of the spirit of the universal that does not deviate from claim and equivalency range and limited and scope, the examples shown that the utility model is not limited to specific details, representational equipment and illustrates here and describe.
Claims (10)
1. the safeguard construction of a power battery pack; This battery pack comprises the M Battery pack; Every Battery pack comprises that N * P is arranged and cell parallel with one another; Be cascaded between every two adjacent Battery packs, be connected with reinforced wiring board on the anodal or negative pole of every Battery pack, it is characterized in that: said reinforced wiring board comprise the conduction mainboard with cover conduction mainboard positive and negative and with the integrated insulating material of conduction mainboard.
2. the safeguard construction of power battery pack as claimed in claim 1; It is characterized in that: said conduction mainboard comprises and is provided with electrode connecting piece and the substrate that N * P is used to connect cell polarity; Be provided with cannelure between said electrode connecting piece and the substrate; Also be provided with at least three between said electrode connecting piece and the substrate and electrically connect arm, electrically connect arm cannelure is divided into three parts.
3. the safeguard construction of power battery pack as claimed in claim 2, it is characterized in that: said electric connection arm is provided with the groove of indent.
4. the safeguard construction of power battery pack as claimed in claim 2, it is characterized in that: said electrode connecting piece is in the form of annular discs, and the centre of electrode connecting piece also is provided with first through hole that supplies the cell electrode to run through.
5. the safeguard construction of power battery pack as claimed in claim 2 is characterized in that: the blowout current that has in the said electric connection arm at least is less than the blowout current of other electric connection arm.
6. the safeguard construction of power battery pack as claimed in claim 1 is characterized in that: also be provided with some ventilation holes that are arranged on the said conduction mainboard.
7. the safeguard construction of power battery pack as claimed in claim 1, it is characterized in that: said insulating material is a plastic material fire-retardant and that intensity is high.
8. the safeguard construction of power battery pack as claimed in claim 1; It is characterized in that: also be provided with some fusions hole on the said conduction mainboard; The conduction mainboard with cover insulating material on the conduction mainboard positive and negative and merge after, said insulating material just can be filled to and merge in the hole.
9. like the safeguard construction of the described arbitrary power battery pack of claim 1 to 8, it is characterized in that: a distolateral formation pole piece that stretches out of said conduction mainboard.
10. the safeguard construction of power battery pack as claimed in claim 1, it is characterized in that: said M is more than or equal to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203572146U CN202259589U (en) | 2011-09-22 | 2011-09-22 | Safety structure of power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203572146U CN202259589U (en) | 2011-09-22 | 2011-09-22 | Safety structure of power battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259589U true CN202259589U (en) | 2012-05-30 |
Family
ID=46120784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203572146U Withdrawn - After Issue CN202259589U (en) | 2011-09-22 | 2011-09-22 | Safety structure of power battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259589U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022578A (en) * | 2011-09-22 | 2013-04-03 | 深圳市沃特玛电池有限公司 | Security structure of power battery pack |
| WO2016062250A1 (en) * | 2014-10-23 | 2016-04-28 | Quantum Force Engineering Limited | Battery assembly |
| CN106935746A (en) * | 2015-12-31 | 2017-07-07 | 深圳市沃特玛电池有限公司 | The battery modules of electric automobile |
| CN109716557A (en) * | 2016-09-20 | 2019-05-03 | 株式会社东芝 | Battery pack and conductive component |
-
2011
- 2011-09-22 CN CN2011203572146U patent/CN202259589U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022578A (en) * | 2011-09-22 | 2013-04-03 | 深圳市沃特玛电池有限公司 | Security structure of power battery pack |
| CN103022578B (en) * | 2011-09-22 | 2016-05-18 | 深圳市沃特玛电池有限公司 | A kind of safeguard construction of power battery pack |
| WO2016062250A1 (en) * | 2014-10-23 | 2016-04-28 | Quantum Force Engineering Limited | Battery assembly |
| US10186739B2 (en) | 2014-10-23 | 2019-01-22 | Ampd Energy Limited | Battery assembly |
| CN106935746A (en) * | 2015-12-31 | 2017-07-07 | 深圳市沃特玛电池有限公司 | The battery modules of electric automobile |
| CN109716557A (en) * | 2016-09-20 | 2019-05-03 | 株式会社东芝 | Battery pack and conductive component |
| CN109716557B (en) * | 2016-09-20 | 2021-11-16 | 株式会社东芝 | Battery pack and conductive member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Security structure of power battery pack Effective date of registration: 20141218 Granted publication date: 20120530 Pledgee: Export Import Bank of China Pledgor: Shenzhen waltmal Battery Co., Ltd|Zhao Bing Registration number: 2014990001097 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20171025 Granted publication date: 20120530 Pledgee: Export Import Bank of China Pledgor: Shenzhen Optimum Battery Co., Ltd.|Zhao Bing Registration number: 2014990001097 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |