CN202586297U - Overvoltage-protection Li-ion battery charger protector - Google Patents
Overvoltage-protection Li-ion battery charger protector Download PDFInfo
- Publication number
- CN202586297U CN202586297U CN2011205601177U CN201120560117U CN202586297U CN 202586297 U CN202586297 U CN 202586297U CN 2011205601177 U CN2011205601177 U CN 2011205601177U CN 201120560117 U CN201120560117 U CN 201120560117U CN 202586297 U CN202586297 U CN 202586297U
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- wound resistor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/046—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a thermocouple
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Fuses (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The utility model provides an overvoltage-protection Li-ion battery charger protector, wherein two serially connected axle-shaped temperature fuses are serially connected with the positive electrode of a circuit. One end of a wire-wound resistor is connected with the tie point of the two temperature fuses, while the other end of the wire-wound resistor is serially connected with one end of a transient voltage suppressor (TVS) tube. The other end of the TVS tube is connected with the negative electrode of the circuit. A hollow porcelain tube is provided with two through holes. Each axle-shaped temperature fuse is arranged in one of the two through holes respectively. Since the two axle-shaped temperature fuses are connected together at one end of the porcelain tube to form a series circuit, the positive electrode of a lithium battery and the positive electrode of a charging power supply are connected with each other. The outer surface of the porcelain tube is provided with the wire-wound resistor R. One end of the wire-wound resistor R is connected with the tie point of the two temperature fuses, while the other end of the wire-wound resistor R is connected with the TVS tube. The other end of the TVS tube is connected with the negative electrode of the lithium battery. During the abnormal over-voltage charging process, the TVS tube is passively turned on and conducted, and the wire-wound resistor R is quickly heated. Thus, the temperature fuses are quickly disconnected so as to cut off the power supply. A battery management system (BMS) acceptable to lithium batteries sends out an instruction on cutting off the circuit, so as to directly electrify and heat the temperature fuses. Thus, the temperature fuses are quickly disconnected to cut off the power supply.
Description
Technical field
The utility model relates to a kind of multifunction protection device to the lithium cell charging process, especially when battery charge to overvoltage, overcharge, the device of surge protection.
Background technology
Lithium battery has advantages such as volume is little, energy density is high, memory-less effect, high, the high economize on electricity pressure of cycle life is high, self-discharge rate is low, is applied to more and more widely in all kinds of state-of-the-art electronic installations
The lithium battery group of portable electric energy working equipment such as electric motor car, electric tool is made up of through connection in series-parallel the lithium battery electric core of more piece monomer, and multi-section serial can improve output voltage, and the more piece parallel connection can improve the capacity of battery pack.Like the lithium battery group of 36V/10AH, adopt 18650 electric cores, capacity is 2000mAH, needs to adopt 50 battery cells, 10 series connection, parallelly connected again 5 groups.If 48V voltage or higher capacity, then battery cell quantity also will increase accordingly.
The lithium battery group overheated, overcharge/overdischarge stream, possibly cause shorter battery life under the abuse conditions such as overvoltage charging, undue oscillation, excessive compression so that damage; Even can catch fire, incident such as blast; In order to solve the safe difficult problem of lithium battery group, electric motor car all is equipped with battery management system BMS, monitoring cell voltage; Information such as electric current and temperature is guaranteed the safe handling of battery.Because BMS belongs to the ACTIVE CONTROL system, itself also has the possibility of fault and inefficacy, just in case BMS thrashing, lithium battery system also should guarantee safety, then just need carry out second protection to the lithium battery group.
Because the user do not understand the knowledge of lithium battery, in charging anomaly is arranged often, as the quality of taking charger or charger by mistake goes wrong; Cause charging voltage unusual; Still charging by force will form the overvoltage charging during like overtension, causes fire to produce.
So, just need insert a protection device that can prevent the overvoltage charging in lithium battery group inside, the lithium battery group is played a part second protection.
This patent relates to a kind of novel passive protection element, can effectively solve the overheated danger of combustion that the charging of lithium battery group abnormally high-voltage causes battery.
The utility model content
A kind of protector that prevents overvoltage to lithium cell charging; Adopt two axle shape Thermal Cutoffs of connecting; And be series in the anodal loop of circuit; And an end of wire-wound resistor is being connected the interface of two Thermal Cutoffs, the other end is being connected the negative pole of circuit with the series connection of TVS pipe, by the other end of TVS pipe.
Be provided with one have two through holes hollow porcelain tube, two through holes in a described axle shape Thermal Cutoffs is installed respectively and two Thermal Cutoffs couple together the positive pole of lithium battery anode and charge power supply after being joined together to form series circuit outside porcelain tube one end; The outer surface of said porcelain tube is provided with described wire-wound resistor R, and the end of wire-wound resistor R links to each other with the tie point of two Thermal Cutoffs, the other end is being connected a Transient Voltage Suppressor (TVS pipe), and the other end of TVS pipe is then connecting the negative pole of lithium battery.
Said protector, a shell is set, and (TVS pipe, two axle shape Thermal Cutoffs, hollow porcelain tube and wire-wound resistors become one with Transient Voltage Suppressor.
Said protector behind fitting temperature fuse on the hollow porcelain tube, has been filled the disconnected agent of fluxing, and seals the back with epoxy resin then and solidifies.
The hollow porcelain tube of said protector setting is processed the cavity that is provided with in pairs more than 4 or 4; Be used to hold the Thermal Cutoffs of respective numbers; And be divided into two groups, and every group of Thermal Cutoffs parallel connection, the two groups of Thermal Cutoffs in parallel connection back are series in the cathode circuit of lithium battery again.
Said protector outer casing is a flat shape, and the left-half of shell is the single-pass hole, is used to hold sheet type resistance, and right half part is a doubled via, is used to install two Thermal Cutoffs.
Said protector is coated the disconnected agent of fluxing respectively between the inwall of doubled via, use epoxy sealing at the two ends of two through holes and the vacant part of the electrical sheet resistance in the large through-hole.
The core component of this patent is that axle shape Thermal Cutoffs (thermal cutoff, thermal fuse, thermallink) is called for short TCO; The elemental motion that utilizes Thermal Cutoffs when receiving excessive temperature, to break off to cut off circuit is used as core component; And be connected in the anodal loop of lithium battery,, need Thermal Cutoffs is carried out the active heating in order to reach active control function; Therefore twining resistance wire on the ceramic package of axle shape Thermal Cutoffs; Promptly form the function of wire-wound resistor, like this as long as the wire-wound resistor energising can extremely be broken off by the heating-up temperature fuse, to cut off circuit.
Transient Voltage Suppressor (Transient Voltage Suppressor) is called for short TVS, is a kind of high-effect protection device of diode.When the two poles of the earth of TVS diode receive reverse transient state high energy impact events; It can be with the speed of 10-12 nanosecond order; The high impedance of its two interpolar is become Low ESR; The voltage clamp that makes two interpolars is protected the precision components in the electronic circuit effectively in a predetermined value, avoids the damage of various surge pulses.Because it has fast, advantage such as transient power is big, leakage current is low, the puncture voltage deviation is little, clamping voltage is more easy to control, do not have to damage the limit, volume is little of response time.So; Can utilize the above characteristic of TVS pipe; The clamped voltage of TVS pipe is set at the peak of the safe charging voltage of lithium battery, and the TVS pipe is connected in parallel in the charge circuit of lithium battery with said wire-wound resistor series connection then, the charging voltage in the TVS pipe induction lithium cell charging, surpass the clamped voltage of TVS pipe when charging voltage; The TVS pipe is with conducting; So said wire-wound resistor heating power also passes to the Thermal Cutoffs in the hollow porcelain tube of matrix of said wire-wound resistor, make it reach fusing-off temperature and cut off charging circuit, stopped the generation of the security incident that the overvoltage charging causes.
For easy to install and use, can above Thermal Cutoffs, wire-wound resistor, TVS pipe is integrated, formed the structure of this patent.The protection device that prevents the charging of lithium battery overvoltage of this patent structure will be installed in the lithium battery group, be close to battery, and following many-sided function is arranged:
First major function is the overvoltage charge protection: during the abnormal overvoltage charging, TVS manages passive unlatching conducting, and wire resistor heats rapidly, cuts off the electricity supply thereby Thermal Cutoffs is broken off fast.
Second major function is an ACTIVE CONTROL: can accept the instruction of the cut-out circuit that the BMS management system of lithium battery sends, let the direct heating power of wire-wound resistor, cut off the electricity supply thereby Thermal Cutoffs is broken off fast.
The 3rd major function is the surge absorption function that self possesses of surge protection: TVS pipe, can bear external surge current, makes lithium battery avoid the surge voltage infringement.
The 4th miscellaneous function is a temperature protection: when surpassing the rated function temperature of Thermal Cutoffs like the lithium battery body temperature, and can the fast shut-off electric current.
The 5th miscellaneous function is overcurrent protection: during load short circuits, super-high-current makes the passive fast shut-off power supply of Thermal Cutoffs TCO.
Description of drawings
Accompanying drawing 1 is the circuit diagram of this patent specific embodiment 1
Accompanying drawing 2 is structural representations of this patent specific embodiment 1
Accompanying drawing 3 is STRUCTURE DECOMPOSITION sketch mapes of this patent specific embodiment 1
Accompanying drawing 4 is Thermal Cutoffs resistance and the TVS pipe connecting structure sketch mapes in this patent specific embodiment 1
Accompanying drawing 5 is internal structure decomposing schematic representations of the Thermal Cutoffs resistance in this patent specific embodiment 1
Accompanying drawing 6 is circuit diagrams of this patent specific embodiment 2
Accompanying drawing 7 is that the structure partial of this patent specific embodiment 2 is dissected sketch map
Accompanying drawing 8 is exploded sketch of this patent specific embodiment 2
Embodiment 1
Embodiment 1 below in conjunction with 1 to 5 pair of patent of the present invention of accompanying drawing is further narrated, and wherein, what stated is for the preferred embodiment purpose of patent of the present invention is described, rather than in order to limit above-mentioned purpose.
Can learn from the circuit diagram of Fig. 1; Adopt 2 axle shape Thermal Cutoffs of connecting in this patent; And be series in the anodal loop of circuit; And an end of wire-wound resistor is being connected the interface of two Thermal Cutoffs, the other end is being connected the negative pole of circuit with the series connection of TVS pipe, by the other end of TVS pipe.So just formed the operating circuit principle of this patent; When external charging voltage surpassed the conducting voltage of TVS pipe, TVS manage conducting, and charging voltage will make wire-wound resistor generate heat, and passed to Thermal Cutoffs fast and make it to break off charging circuit; Wherein the disconnection near the TCO of charging end can break away from charging voltage fully, and leans on the disconnection of the TCO of lithium battery end can wire-wound resistor be broken away from from cell voltage, stops to continue on the energy storage basis of battery, continuing heating.
Fig. 2 is the structure of whole protecting device, and as can beappreciated from fig. 3 entire product is made up of cover plate 301, shell 302 and agent structure 303.Agent structure 303 is able to be decomposed into the lead-in wire formed body 402 of Thermal Cutoffs and wire-wound resistor integral structure 401, TVS pipe in Fig. 4.
Thermal Cutoffs and wire-wound resistor integral structure 401 are to constitute like this: in Fig. 5; Be a cylindrical ceramic body, there are two parallel through holes the centre, is used to hold two Thermal Cutoffs; Two metal end are overlapped 502a, 502b on each close-fitting of outer surface of two, porcelain tube 503 left and right sides; Metal end cover 50a's is hollow out with respect to porcelain tube end face plane, overlaps wire resistor 404 in 502a, the 502b connection two metal end then, and wire resistor 404 is wrapped on the outer surface of earthenware 503; Form the porcelain tube matrix of a strip resistance silk like this, just the main body of wire-wound resistor 404.Fitting temperature fuse on porcelain tube 503 then; Low-melting alloy silk 505a, 505b have been welded respectively with among the pin 403a that has insulating coating, the 403b at pin 509a, 509b; Around alloy silk 505a, 505b; Flux disconnected agent 504a, 504b have been filled; After the three forms an integral body, be placed in two cavitys of earthenware 503, seal the back with epoxy resin 501 then and solidify; So just can be made into the conjoined structure that has two Thermal Cutoffs; When alloy silk 505a, 505b experience bigger heat be warmed up to himself fusing point and form liquid state, also Yin Wendu surpassed its softening point and became liquid state the disconnected agent 504a that fluxes, 504b this moment, liquid alloy silk and the interfacial tension of the liquid disconnected formed liquid-liquid interface of agent of fluxing will impel liquid alloy silk therefrom separated and shrink to two ends, thereby form the function of cutting off circuit.
In order to adapt to the application demand of high rated current; Earthenware 503 can also be processed the cavity that is provided with in pairs more than 4 or 4, is used to hold the Thermal Cutoffs of respective numbers, is divided into two groups; Every group of Thermal Cutoffs parallel connection, the two groups of Thermal Cutoffs in parallel connection back are series in the cathode circuit of lithium battery again.
When after the above-mentioned Thermal Cutoffs moulding metal cap 507 close-fittings metal end on the right being overlapped on the 502b; Leave two through holes that have flange on the metal cap 507; Letting two pin 509a, 509b of Thermal Cutoffs pass, to adopt the technology that metal section and part with flange revolves this two pins of riveting 509a, 509b that three parts are closely linked to each other, thereby formed an end that is connecting wire-wound resistor on the tie point between two Thermal Cutoffs shown in Fig. 1.Like Fig. 4, at first TVS is managed pin 406 and be bent into U-shaped with 407, connect a lead 408 at 407 pins, one face down bonding then, so just formed the lead-in wire formed body 402 of a TVS pipe.Then the other end of lead 408 is welded on the metal end cover 502b, has formed connecting of TVS pipe and wire-wound resistor 404, and connected the negative pole of lithium battery through the pin 406 that TVS manages.Another root pin 407 of TVS will link to each other with the BMS management system of lithium battery, to accept the initiatively instruction of control.Like Fig. 3; Agent structure 303 is positioned over lets two lead-in wire 403a, the 403b of Thermal Cutoffs and the two pins 406,407 of TVS pipe stretch out shell 302 two ends respectively in the shell 302; Form 4 links; Cover plate 301 is covered on shell 302, and fill up the inner chamber clearance spaces, so just formed whole this patent product with curable insulation filling material.
Embodiment 2
Structure to specific embodiment 1; In order to satisfy the demand of small sizeization, flattening,, can the TVS pipe be placed on the wiring board to be adapted to the space requirement of notebook with lithium battery; In the structure of this embodiment 2; As shown in Figure 6, with being connected in the anodal loop of lithium battery after two Thermal Cutoffs series connection, be drawn out to a section of resistance from the intermediate connection point of two Thermal Cutoffs; And the other end of resistance folding is externally drawn, to connect the electronic switch K among the BMS (battery management system); When the BMS system monitoring is in the hole to lithium battery; Being about to electronic switch K connects; The two ends of resistance are promptly connecting the both positive and negative polarity of battery and electricity causes heating; Thereby cut off two Thermal Cutoffs, continue dangerous impulse electricity work, prevent catching fire and the appearance of explosion phenomenon of lithium battery to stop lithium battery.
Can find out the flattening on the volume, the characteristics of miniaturization from Fig. 7, Fig. 8.Shell 701 is flat shapes, and the left-half 701A of shell is a bigger single-pass hole, is used to hold sheet type resistance 704, and right half part is a doubled via 701B, 701C, is used to install two Thermal Cutoffs.Left and right sides through hole communicates.
As shown in Figure 7; The two ends that are the lead-in wire 703 of U type are connecting alloy silk 702a, the 702b of two Thermal Cutoffs; And the other end of alloy silk 702a, 702b is connecting lead-in wire 705a, 705b respectively, has formed the current-carrying part of two Thermal Cutoffs of connecting like this, is parastate; The middle part of same lead-in wire 703 that is the two temperatures fuse of U type is connecting an end of electrical sheet resistance 704, and the other end of electrical sheet resistance 704 is connecting again and goes between 706 and externally draw, and is used to connect the electronic switch of BMS system.By the current-carrying part of two Thermal Cutoffs and the conjoined structure of electrical sheet resistance series connection; To be pierced in the shell 701; Formed the structure of Fig. 8; Between the inwall of the surface of alloy silk 702a, 702b and two small through hole 701B in the shell 701,701C, coat flux disconnected agent 802a, 802b respectively; Be used to impel the alloy silk when experiencing excessive temperature, to melt and therefrom separated, use epoxy sealing at the two ends of two through hole 701B, 701C, formed two complete alloy-type temperature fuses.Simultaneously, with epoxy resin or inorganic fillings the vacant part of the electrical sheet resistance among the large through-hole 701A in 701 shells is filled up, such sheet type lithium cell charging protector has just been processed.
The above; Be merely the utility model preferred embodiment; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (7)
1. protector that prevents overvoltage to lithium cell charging; Adopt two axle shape Thermal Cutoffs of connecting; And be series in the anodal loop of circuit; It is characterized in that an end of wire-wound resistor is being connected the interface of two Thermal Cutoffs, the other end is being connected the negative pole of circuit with the series connection of TVS pipe, by the other end of TVS pipe.
2. a kind of protector that prevents overvoltage to lithium cell charging according to claim 1, it is characterized in that being provided with one have in the hollow porcelain tube of two through holes, two through holes a described axle shape Thermal Cutoffs respectively is installed, two Thermal Cutoffs are connected lithium battery anode after porcelain tube one end is joined together to form series circuit with the positive pole of charge power supply; The outer surface of said porcelain tube is provided with described wire-wound resistor R, and the end of wire-wound resistor R links to each other with the tie point of two Thermal Cutoffs, and the other end connects a Transient Voltage Suppressor TVS pipe, and the other end of TVS pipe is connecting the negative pole of lithium battery.
3. a kind of protector that prevents overvoltage to lithium cell charging according to claim 2 is characterized in that a shell becomes one Transient Voltage Suppressor TVS pipe, two axle shape Thermal Cutoffs, hollow porcelain tube and wire-wound resistors.
4. a kind of protector that prevents overvoltage to lithium cell charging according to claim 2 is characterized in that being in hollow porcelain tube, behind the fitting temperature fuse, filling the disconnected agent of fluxing, and seals the back with epoxy resin and solidifies.
5. a kind of protector that prevents overvoltage to lithium cell charging according to claim 1; It is characterized in that being provided with a hollow porcelain tube; Described earthenware is processed the cavity that is provided with in pairs more than 4 or 4, is used to hold the Thermal Cutoffs of respective numbers, and is divided into two groups; Every group of Thermal Cutoffs parallel connection, the two groups of Thermal Cutoffs in parallel connection back are series in the cathode circuit of lithium battery again.
6. a kind of protector that prevents overvoltage to lithium cell charging according to claim 1; It is characterized in that shell is a flat shape, the left-half of shell is the single-pass hole, is used to hold sheet type resistance; Right half part is a doubled via, is used to install two Thermal Cutoffs.
7. a kind of protector that prevents overvoltage to lithium cell charging according to claim 6 is characterized in that coating the disconnected agent of fluxing at the inwall of doubled via, uses epoxy sealing at the two ends of two through holes and the vacant part of the electrical sheet resistance in the large through-hole.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205601177U CN202586297U (en) | 2011-12-28 | 2011-12-28 | Overvoltage-protection Li-ion battery charger protector |
| PCT/CN2012/086246 WO2013097591A1 (en) | 2011-12-28 | 2012-12-10 | Protector for preventing lithium battery from being charged by overvoltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205601177U CN202586297U (en) | 2011-12-28 | 2011-12-28 | Overvoltage-protection Li-ion battery charger protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586297U true CN202586297U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205601177U Expired - Lifetime CN202586297U (en) | 2011-12-28 | 2011-12-28 | Overvoltage-protection Li-ion battery charger protector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202586297U (en) |
| WO (1) | WO2013097591A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097591A1 (en) * | 2011-12-28 | 2013-07-04 | 厦门赛尔特电子有限公司 | Protector for preventing lithium battery from being charged by overvoltage |
| CN105186665A (en) * | 2015-07-31 | 2015-12-23 | 许继集团有限公司 | Wind-solar complementary lamp control system |
| CN106208274A (en) * | 2016-09-19 | 2016-12-07 | 广东乐源数字技术有限公司 | A kind of Mobile terminal charging system |
| CN106374561A (en) * | 2016-09-19 | 2017-02-01 | 广东乐源数字技术有限公司 | Charging method of mobile terminal |
| CN110994561A (en) * | 2019-04-30 | 2020-04-10 | 宁德时代新能源科技股份有限公司 | Battery safety protection system and processing method |
| US11509159B2 (en) | 2019-08-28 | 2022-11-22 | Microsoft Technology Licensing, Llc | System and method for thermal cutoff protection device control from an external component |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11378627B2 (en) | 2018-08-03 | 2022-07-05 | Airbus Helicopters Deutschland GmbH | Electrical battery monitoring device and battery |
| CN113130273B (en) * | 2020-01-15 | 2022-07-15 | 比亚迪股份有限公司 | Multifunctional fuse |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134461Y (en) * | 2007-12-14 | 2008-10-15 | 天津力神电池股份有限公司 | Disaster preventing protective device of protective plate of multi-series lithium ion cell |
| CN201303249Y (en) * | 2008-11-17 | 2009-09-02 | 程一凡 | Anti-lightning circuit |
| KR101016825B1 (en) * | 2009-02-24 | 2011-02-21 | 삼성에스디아이 주식회사 | Battery pack and protecting method thereof |
| CN202586297U (en) * | 2011-12-28 | 2012-12-05 | 厦门赛尔特电子有限公司 | Overvoltage-protection Li-ion battery charger protector |
-
2011
- 2011-12-28 CN CN2011205601177U patent/CN202586297U/en not_active Expired - Lifetime
-
2012
- 2012-12-10 WO PCT/CN2012/086246 patent/WO2013097591A1/en active Application Filing
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097591A1 (en) * | 2011-12-28 | 2013-07-04 | 厦门赛尔特电子有限公司 | Protector for preventing lithium battery from being charged by overvoltage |
| CN105186665A (en) * | 2015-07-31 | 2015-12-23 | 许继集团有限公司 | Wind-solar complementary lamp control system |
| CN106208274A (en) * | 2016-09-19 | 2016-12-07 | 广东乐源数字技术有限公司 | A kind of Mobile terminal charging system |
| CN106374561A (en) * | 2016-09-19 | 2017-02-01 | 广东乐源数字技术有限公司 | Charging method of mobile terminal |
| CN106374561B (en) * | 2016-09-19 | 2018-09-07 | 广东乐源数字技术有限公司 | A kind of mobile terminal charging method |
| CN106208274B (en) * | 2016-09-19 | 2018-09-07 | 广东乐源数字技术有限公司 | A kind of Mobile terminal charging system |
| CN110994561A (en) * | 2019-04-30 | 2020-04-10 | 宁德时代新能源科技股份有限公司 | Battery safety protection system and processing method |
| CN110994561B (en) * | 2019-04-30 | 2021-10-08 | 宁德时代新能源科技股份有限公司 | Battery safety protection system and processing method |
| US11509159B2 (en) | 2019-08-28 | 2022-11-22 | Microsoft Technology Licensing, Llc | System and method for thermal cutoff protection device control from an external component |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013097591A1 (en) | 2013-07-04 |
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