CN200941411Y - Battery - Google Patents
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- Publication number
- CN200941411Y CN200941411Y CNU2006201191539U CN200620119153U CN200941411Y CN 200941411 Y CN200941411 Y CN 200941411Y CN U2006201191539 U CNU2006201191539 U CN U2006201191539U CN 200620119153 U CN200620119153 U CN 200620119153U CN 200941411 Y CN200941411 Y CN 200941411Y
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- storage battery
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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
Abstract
The utility model discloses a storage battery which comprises a shell with a positive post and a negative post, multi-sets of energy units in the shell, and each set of which is enclosed by an anode plate and a cathode plate separated by an insulated diaphragm and winded through many circles, and the multi-sets of energy units are paralleled and then connected with the positive post and the negative post. The shell and the energy units are of the cuboid structure, and the energy units are horizontally arranged in the shell in the length direction of the smaller side of the shell. The anode and the cathode of the energy units are set in the two sides of the battery respectively. The utility model with simple structure, reliable performance and high safety and large capacity, is not easy to cause deformation, and is especially suitable for lithium-ion batteries providing energy for high energy consumption equipments, electric bicycle, electric motorcycle, electric vehicle, etc, and is also suitable for the storage battery of other equipments.
Description
Technical field
The utility model relates to a kind of storage battery, relates in particular to a kind ofly to utilize reversible electrochemical reaction to save storage battery with supply of electrical energy.
Background technology
Lithium ion battery be Li to embed compound be the rechargeable battery of both positive and negative polarity, the anodal lithium compound LiCoO2 that adopts, LiNiO2, LiMn2O4, LiFePO4 or random mixture between them, negative pole adopts lithium-carbon intercalation compound LiXC6.Electrolyte is the organic solution that is dissolved with lithium salts such as LiPF6, LiASF6 or LiBOB.In charge and discharge process, lithium ion+Li comes and goes embedding and takes off embedding between two electrodes, be called " rocking chair battery " (Rocking Chair Batteries is abbreviated as RCB) visually.Make battery from people's invention lithium metal material, constituted since the lithium ion battery of high voltage and high-energy-density, produced two types lithium ion battery: a kind of is the lithium ion battery of the early stage liquid state that occurs, and another kind is the colloidal state that occurs after the nineties and solid-state polymer battery.The anode of lithium ion battery and negative electrode are made by carbonaceous material and metal oxide respectively, have the layer structure that promotes lithium ion heavily to cover migration." rocking chair " effect makes lithium ion battery that long storage life and long cycle life be arranged.
Along with the development of electric Driving technique, driven by power is about to become the major impetus energy that uses in people's life.Because the electric energy environmentally safe, and its source has relative immutability, so the driven by power technology may continue millennium.And technology such as steam engine, internal combustion engine, turbine all are the technology with the combustion mode work done, it is short interlude in the human social development process, though their generation has promoted social development, also injured the earth environment that people depend on for existence dearly.Be accompanied by the crisis of worldwide fuel reserves, and more and more serious environmental being polluted, is that the vehicles of the major impetus energy are fast-developing with the storage battery.But traditional storage battery does not solve the deadly defect of itself as a kind of high-power, jumbo electrical source of power, and mainly there is following two large problems in traditional storage battery:
The one, specific energy low (disposable charging does not reach desirable continual mileage).
The 2nd, specific power little (it is low to quicken climbing capacity, is difficult to the state of tending to balance when heavy-current discharge).
The generation of lithium-ion-power cell, driving arrangement high-power to using, macro-energy has represented new prospect.Analysis-by-synthesis and actual verification according to the performance (comprising: energy density, charge-discharge characteristic, temperature characterisitic, cycle life, self discharge and fail safe) of lithium-ion-power cell, existing consistent conclusion is thought: the performance of lithium-ion-power cell is better than other rechargeable batteries at present greatly, its application prospect wide, the broadness of the scope of application can't be estimated.
Existing lithium-ion-power cell generally adopts takeup type, as: adopt 1 group of positive and negative plate to be wound into battery pack, but it is generally acknowledged that prior art can not make battery roll core infinitely enlarge (as: capacity will sharply descend greater than the garden post battery thermal safety of 2Ah).
Improved method one is: will organize coiled battery more and be combined into battery pack, with the superimposed conventional method that is assembled into battery pack of a plurality of cells be: cell is arranged along the leptoprosopy of shell, their wide is mutual superimposed, the major defect that this battery exists is: 1. because existing inside battery stress is unavoidable, this patent has been avoided the method that is in the past retrained internal stress by shell, and with inner elastomeric bulk absorption internal stress, its consequence is that inside battery interlayer spacing changes, and this will cause the stable performance of battery performance; 2. this inside battery cell arragement direction is unfavorable for the constraint to the pole piece interfloor distance, and both the restraining force of wide vertical direction of battery case side was the most weak; 3. one of original intention of this type of battery structure is not wish that inner cell capacity is excessive, and invents described cell orientation according to this, can not make the battery (as: greater than 100Ah) of larger capacity in the practical application.
Another kind of improved method is: adopting stacked battery, is starting point with the battery principle, and square stacked the arranging of battery pole piece in the battery case is separated by with barrier film between battery pole piece, and the battery pole piece two ends are by corrosion resistant plate or nickel plate or copper coin connection and fixing.Yet they are all excessive owing to the pole piece area, cause easily in the assembling process of battery complexity and charge and discharge process that heat radiation is smooth, distortion, dry linting, the pole piece degree of tightness is inconsistent and defective such as micro-short circuit, causes potential safety hazard.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, dependable performance, and not yielding, safe in utilization, capacious storage battery.
The purpose of this utility model is achieved through the following technical solutions:
Storage battery of the present utility model, comprise the shell that has positive terminal, negative terminal, also comprise many group energy units, every group of energy unit formed by the insulation diaphragm interval and the multi-turn of reeling by positive plate, negative plate, the setting of described many group energy units in the enclosure, the positive plate of described many group energy units is electrically connected the back mutually and is electrically connected with positive terminal, and the negative plate of described many group energy units is electrically connected the back mutually and is electrically connected with negative terminal.
The two ends of described energy unit are respectively equipped with anode ear, negative electrode lug, and described anode ear, negative electrode lug are electrically connected with positive plate, negative plate respectively; The anode ear of described many group energy units is electrically connected the back mutually and is electrically connected with positive terminal, and the negative electrode lug of described many group energy units is electrically connected the back mutually and is electrically connected with negative terminal.
Described shell is rectangular structure, comprises antetheca, rear wall, Zuo Bi, You Bi, roof, diapire, and front and back walls is wider than roof, diapire and left and right wall, and left and right wall in the size between roof and diapire greater than the size between antetheca and rear wall;
Described energy unit is rectangular structure, horizontally set in the enclosure, and the surface parallel with front and back walls is wider than on the energy unit surface parallel with diapire and roof; To the roof arranged, and positive and negative lug places respectively near Zuo Bi, You Bichu many group energy units by diapire.
Described positive terminal, negative terminal are located on the roof of shell.
Described positive and negative lug is electrically connected with positive and negative pole by the tape splicing that is electrically connected that electric conducting material is made respectively.
Described positive and negative lug is connected by rivet or screw with the electrical connection interband.
The number of turns that described positive plate, negative plate are also reeled at interval by insulation diaphragm is 2～100 circles.
Described shell is provided with liquid injection hole.
Described shell is provided with explosionproof hole.
Described energy unit has 2～100 groups.
The technical scheme that provides by above-mentioned the utility model as can be seen, storage battery described in the utility model owing to adopt many group energy units inside to be arranged in parallel, capacity is big, short circuit ratio is low, improved the breach security of battery;
Because the dilatancy of energy content of battery unit mainly occurs in maximum lateral vertical side direction, the utility model is owing to energy unit is arranged along the length direction of the smaller sides of shell, has stronger restraining force at deformation direction, even distortion is in a small amount arranged, to also very little owing to being out of shape the electrical property variable effect that causes, make to discharge and recharge the deformation that causes and obtained effective control, reduced the cell thickness distortion; Simultaneously, the total length of energy unit is reduced to some extent, make that electrolyte is easier to soak into whole electric core, battery performance will be not fully exerted;
Owing to being, all energy units are connected in parallel again, and because their length shortens relatively, and the element number of the same capacity battery that makes increases relatively, thereby the internal resistance and the internal resistance that have reduced battery change.Guaranteed the high-rate battery discharge performance;
Owing to adopt the multipotency unit combination of winding method, be convenient to detect and control micro-short circuit phenomenon in intermediate link, be convenient to the short-circuit detecting and the maintenance of production process, reduce and produce scrappage;
Owing to adopt rightabout to draw the positive and negative electrode of energy unit, significantly reduced the possibility of inside battery electric pole short circuit, further improved battery security;
Owing to take from enclosure two sided extraction electrode, make battery internal pressure equalization under any circumstance, explosionproof hole can effectively play a role when battery was met accident, and battery security will improve greatly;
The utility model is specially adapted to provide for high-energy equipments such as electric bicycle, battery-operated motor cycle and electric automobiles the lithium-ion-power cell of the energy, also is applicable to the storage battery of other occasion.
Description of drawings
Fig. 1 is the structural representation of the utility model storage battery;
Fig. 2 is the structural representation of energy unit;
Fig. 3 is the vertical view of Fig. 2.
Embodiment
The preferable embodiment of the utility model as shown in Figure 1, comprise the shell 1 that has positive terminal 8, negative terminal 10, also comprise many group energy units 2, every group of energy unit 2 formed by insulation diaphragm 5 intervals and the multi-turn of reeling by positive plate 4, negative plate 6, the number of turns of reeling is 2～100 circles, the more number of turns of also can reeling, its number of turns is determined according to integral battery door capacity, shell sizes and cell capacity complex optimum.
Described many group energy units 2 are arranged in the shell 1, and the positive plate 4 of described many group energy units 2 is electrically connected the back mutually and is electrically connected with positive terminal 8, and the negative plate 6 of described many group energy units is electrically connected the back mutually and is electrically connected with negative terminal 10.Described positive terminal 8, negative terminal 10 are located on the roof 7 of shell 1, also can be arranged on other position as required.Be preferably parallel connection between each energy unit 2, reach the purpose that improves the electric current handling capacity and reduce the internal resistance of cell.
Positive plate 4 and negative plate 6 can directly be electrically connected with positive terminal 8 and negative terminal 10 respectively by bonding conductor, and the bonding conductor here can be the tape splicing made from electric conducting material 16 that is electrically connected, also can be with other connected mode, and preferable connected mode is:
Be respectively equipped with anode ear 14, negative electrode lug 15 at the two ends of energy unit 2, described anode ear 14, negative electrode lug 15 are electrically connected with positive plate 4, negative plate 6 respectively; The anode ear 14 of described many group energy units 2 is electrically connected the back mutually and is electrically connected with positive terminal 8, and the negative electrode lug 15 of described many group energy units is electrically connected the back mutually and is electrically connected with negative terminal 10.The tape splicing 16 that is electrically connected that positive and negative lug 14,15 can be made by electric conducting material respectively is electrically connected with positive and negative pole 8,10, and the tape splicing 16 that is electrically connected is made by metals such as aluminium, nickel, copper, also can be made by other metal.
Described positive and negative lug 14,15 can be connected by rivet or screw with 16 of the tape splicings that are electrically connected.Also can be by welding or other connected mode.
Described shell 1 is rectangular structure, comprise antetheca 12, rear wall, left wall 13, You Bi, roof 7, diapire, and front and back walls is wider than roof 7, diapire and left and right wall, and left and right wall in the size between roof 7 and diapire greater than the size between antetheca 12 and rear wall.
As Fig. 2, shown in Figure 3, described energy unit 2 is rectangular structure, and two ends are respectively equipped with anode ear 14, negative electrode lug 15, and broad side surface A is wider than narrow side B.
When in shell 1, placing, be horizontally installed in the shell 1, and the broad side surface A of energy unit 2 is parallel with diapire and roof 7 narrow side B and antetheca 12 and the parallel surface of rear wall; To roof 7 arranged, and positive and negative lug 14,15 places respectively near left wall 13, You Bichu many group energy units by diapire.
Such set-up mode can guarantee that energy unit 2 is arranged in a row along the length direction on the smaller side surface (left wall 13 and You Bi) of shell 1.The narrow side B of the side surface of described all energy units 3 is parallel with the wideest (antetheca 12 and rear wall) of the side surface of shell 1, the broad side surface A of its side surface is parallel with the roof 7 and the diapire of shell 1, and vertical with the smaller side surface (left wall 13 and You Bi) of shell 1.
Described energy unit 2 has 2～100 groups, also more groups of energy units 2 can be set as required, the difference of the difference decision battery capacity of its group number.
In addition, shell 1 can also be provided with liquid injection hole 9 and explosionproof hole 11.Be preferably disposed on the roof 7, also can be arranged on other place.
Manufacturing process of the present utility model is as follows:
Step 1, positive plate 4 adopt active material LiMO2 (M=Co, Mn, Ni or their composite oxides), LiMPO4 (M=Fe, Co, Mn, Ni, V etc. or their composite oxides).Positive electrode active materials and acetylene black, Kynoar, electrically conductive graphite etc. be dissolved in proportion be mixed and made into slurries in N-methyl pyrrolidone or the dimethylacetylamide, slurries are coated on the two sides of aluminium foil (or aluminium net), after 80～150 ℃ of following dryings, backing, cutting obtain anode pole piece;
Step 3, with polypropylene or polyethylene film positive and negative plate is separated and align after be rolled into the volume core, form independent energy unit 2, the energy unit (2～100) that cell is needed is tied up with adhesive tape and is formed whole electric core;
Step 4, the electric core that a plurality of energy units will be housed weld, sink to the bottom, weld, obtain big capacity, highly secure lithium ion dynamic battery after the baking, fluid injection, encapsulation through lug.
According to above-mentioned manufacture method, can make a 100Ah lithium-ion-power cell, its specification is as follows:
Battery profile: 53 * 137 * 216 (length * wide * high units: mm)
The energy unit size: 5 * 50 * 110 is (thick * wide * long unit: mm)
Energy unit (volume core) number: 30
The positive and negative lug of single volume core is coupled together the back by aluminium strip and copper strips respectively to be connected with battery electrode column with rivet or the fixing back of screw, detect performance, with housing and cover plate solder up, promptly get 100Ah high-power lithium ion electrokinetic cell after passing through and toasted the back fluid injection in 5-20 hour, sealing, change into laser welder.
The employing method of testing is: adopt the constant voltage and current limiting mode earlier electricity to be charged to 4.2V, change constant voltage charge again and end when electric current is reduced to 5A.And then constant-current discharge to cut-ff voltage is 2.75V.The contrast test object that adopts is: stack type lithium ion battery, multireel core (the volume core is arranged along the leptoprosopy of shell) lithium ion battery and lithium-ion-power cell of the present invention.The test parameter that adopts is: gravimetric specific energy parameter, cycle performance (being cycle charging or the efficiency for charge-discharge value after 300 times of discharging), cell thickness rate of change (promptly 100 batteries are recycling the average deformation rate value of battery afterwards) and large current discharging capability.The performance comparison that can record three kinds of lithium ion batteries is listed as follows:
| Stack type lithium ion battery | Common multireel core lithium ion battery | Lithium ion battery of the present invention | |
| Energy weight/power ratio (Wh/kg) | 110 | 120 | 120 |
| Cycle performance (300 times) | 79％ | 70％ | 85％ |
| Cell thickness (100) | ±7％ | ±3％ | ±2％ |
| The multiplying power discharging ability | 3C | 3C | 8C |
From above-mentioned test performance comparing result as can be seen, the present invention's lithium ion battery of the prior art relatively, the proportion of goods damageds are low, and the multiplying power discharging ability improves greatly, makes the battery performance performance better.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.
Claims (10)
1, a kind of storage battery, comprise the shell that has positive terminal, negative terminal, it is characterized in that, also comprise many group energy units, every group of energy unit formed by the insulation diaphragm interval and the multi-turn of reeling by positive plate, negative plate, the setting of described many group energy units is electrically connected with positive terminal after the positive plate of described many group energy units is electrically connected mutually in the enclosure, and the negative plate of described many group energy units is electrically connected the back mutually and is electrically connected with negative terminal.
2, storage battery according to claim 1 is characterized in that, the two ends of described energy unit are respectively equipped with anode ear, negative electrode lug, and described anode ear, negative electrode lug are electrically connected with positive plate, negative plate respectively; The anode ear of described many group energy units is electrically connected the back mutually and is electrically connected with positive terminal, and the negative electrode lug of described many group energy units is electrically connected the back mutually and is electrically connected with negative terminal.
3, storage battery according to claim 2, it is characterized in that, described shell is rectangular structure, comprise antetheca, rear wall, Zuo Bi, You Bi, roof, diapire, and front and back walls is wider than roof, diapire and left and right wall, and left and right wall in the size between roof and diapire greater than the size between antetheca and rear wall;
Described energy unit is rectangular structure, horizontally set in the enclosure, and the surface parallel with front and back walls is wider than on the energy unit surface parallel with diapire and roof; To the roof arranged, and positive and negative lug places respectively near Zuo Bi, You Bichu many group energy units by diapire.
4, storage battery according to claim 3 is characterized in that, described positive terminal, negative terminal are located on the roof of shell.
5, storage battery according to claim 4 is characterized in that, described positive and negative lug is electrically connected with positive and negative pole by the tape splicing that is electrically connected that electric conducting material is made respectively.
6. storage battery according to claim 5 is characterized in that, described positive and negative lug is connected by rivet or screw with the electrical connection interband.
According to each described storage battery of claim 1 to 6, it is characterized in that 7, the number of turns that described positive plate, negative plate are also reeled at interval by insulation diaphragm is 2～100 circles.
8, according to each described storage battery of claim 1 to 6, it is characterized in that described shell is provided with liquid injection hole.
9, according to each described storage battery of claim 1 to 6, it is characterized in that described shell is provided with explosionproof hole.
According to each described storage battery of claim 1 to 6, it is characterized in that 10, described energy unit has 2～100 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201191539U CN200941411Y (en) | 2006-08-18 | 2006-08-18 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201191539U CN200941411Y (en) | 2006-08-18 | 2006-08-18 | Battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941411Y true CN200941411Y (en) | 2007-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201191539U Expired - Fee Related CN200941411Y (en) | 2006-08-18 | 2006-08-18 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200941411Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887957A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Self-riveting low internal resistance energy storage device |
| CN102368541A (en) * | 2011-09-23 | 2012-03-07 | 上海万宏动力能源有限公司 | Cylindrical storage battery having improved current-collecting effect and manufacturing method |
| CN107294186A (en) * | 2017-08-11 | 2017-10-24 | 安徽华凯新能源科技有限公司 | Anti-explosion battery group based on SOC curve amendments |
| WO2020135809A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Secondary battery, battery module and electric vehicle |
-
2006
- 2006-08-18 CN CNU2006201191539U patent/CN200941411Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887957A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Self-riveting low internal resistance energy storage device |
| CN102368541A (en) * | 2011-09-23 | 2012-03-07 | 上海万宏动力能源有限公司 | Cylindrical storage battery having improved current-collecting effect and manufacturing method |
| CN107294186A (en) * | 2017-08-11 | 2017-10-24 | 安徽华凯新能源科技有限公司 | Anti-explosion battery group based on SOC curve amendments |
| WO2020135809A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Secondary battery, battery module and electric vehicle |
| US11664555B2 (en) | 2018-12-29 | 2023-05-30 | Contemporary Amperex Technology Co., Limited | Secondary battery, battery module and electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20110818 |