CN107026253A - Secondary battery - Google Patents
Secondary battery Download PDFInfo
- Publication number
- CN107026253A CN107026253A CN201610072895.9A CN201610072895A CN107026253A CN 107026253 A CN107026253 A CN 107026253A CN 201610072895 A CN201610072895 A CN 201610072895A CN 107026253 A CN107026253 A CN 107026253A
- Authority
- CN
- China
- Prior art keywords
- pole
- secondary cell
- control switch
- cabinet
- temp control
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a secondary battery which comprises a top cover plate, a first pole, a second pole, a shell, a battery cell, a load resistor and a temperature control switch. The temperature control switch is in a normally open state, and when the external environment temperature of the secondary battery is greater than or equal to a certain value, the temperature control switch is closed, and the first pole, the load resistor, the second pole and the battery cell form a discharge circuit. In the secondary battery, the load resistor and the temperature control switch are arranged, when the external environment temperature of the secondary battery is greater than or equal to a certain value, the temperature control switch is closed, and the first pole column, the load resistor, the second pole column and the battery cell form a discharge circuit, so that the electric energy of the battery cell is converted into the heat energy of the load resistor, and the safety problem of the battery is avoided by continuously consuming the electric energy of the battery.
Description
Technical field
The present invention relates to field of batteries, more particularly to a kind of secondary cell.
Background technology
The Chinese patent literature CN104703987A announced on 05 06th, 2015 provides a kind of " with thermal switch
Battery ", the battery described in the patent document includes：One just measuring pole (i.e. positive terminal), negative quantity take pole, thermal switch and
Adding thermal resistance.When the shell body temperature exceedes threshold values, (i.e. thermal resistance heating is passed for the adding thermal resistance and fuse thermal coupling
Heat gives fuse, blown fuse) and thermal switch activation.The enclosure interior temperature that the invention solves battery elevated is asked
Topic, but battery in use as external environment condition abnormal (such as ambient temperature is too high) and cause battery to occur
Safety problem (as exploded).
The content of the invention
In view of problem present in background technology, it is an object of the present invention to provide a kind of secondary cell, it can be
The electric energy of consumption battery in time when external environment condition is abnormal, it is to avoid safety problem occurs in battery.
To achieve these goals, the invention provides a kind of secondary cell, it includes：Coping plate；First pole and
Two poles, at least one worn in coping plate setting, the first pole and the second pole insulate with coping plate assembles；Battery core, with
First pole and the electrical connection of the second pole；Load resistance, one end is electrically connected with the first pole；And temp control switch, one end
Electrically connected with the second pole, the other end is electrically connected with the other end of load resistance.Wherein, temp control switch is normally open,
When the ambient temperature residing for secondary cell is more than or equal to certain value, temp control switch closure, the first pole, load
Resistance, the second pole and battery core formation discharge circuit.
Beneficial effects of the present invention are as follows：
In the secondary battery in accordance with the present invention, load resistance and temp control switch are provided with, when residing for secondary cell
Ambient temperature when reaching certain value, temp control switch closure, the first pole, load resistance, the second pole and electricity
Core formation discharge circuit, so that the electric energy of battery core to be converted into the heat energy of load resistance, is kept away by the electric energy of lasting consumption battery
Exempt from battery and safety problem occur.
Brief description of the drawings
Fig. 1 is the connection diagram of the discharge circuit according to secondary cell of the invention in one embodiment, wherein discharging
Temp control switch in circuit is off；
Fig. 2 is the connection diagram of discharge circuit when temp control switch in Fig. 1 is in closure state；
Fig. 3 is the connection diagram of the discharge circuit according to secondary cell of the invention in another embodiment, wherein putting
Temp control switch in circuit is in closure state；
Fig. 4 is the connection diagram of the discharge circuit according to secondary cell of the invention in another embodiment, wherein putting
Temp control switch in circuit is off；
Fig. 5 is the connection diagram of discharge circuit when temp control switch in Fig. 4 is in closure state；
Fig. 6 is a deformation pattern of the temp control switch in Fig. 1, and wherein temp control switch is off；
Fig. 7 is that the temp control switch in Fig. 6 is in closure state；
Fig. 8 is the another deformation pattern of the temp control switch in Fig. 6, and wherein temp control switch is off；
Fig. 9 is that the temp control switch in Fig. 8 is in closure state；
Figure 10 is a Fig. 1 deformation pattern, wherein having exchanged the position of temp control switch and load resistance；
Figure 11 is the connection diagram of discharge circuit when temp control switch in Figure 10 is in closure state.
Wherein, description of reference numerals is as follows：
The conducting strip of 1 coping plate 72
The diaphragm seal of 2 first pole 73
The connecting rod of 3 second pole 74
The temperature shape memory element of 4 housing 75
The spring of 5 battery core 751
The compressive films of 6 load resistance 752
The conductive plate of 7 temp control switch 76
The pedestal of 71 cabinet 77
Embodiment
With reference to the accompanying drawings come describe in detail according to the present invention secondary cell.
Referring to figs. 1 to Figure 11, included according to the secondary cell of the present invention：Coping plate 1；First pole 2 and the second pole 3,
Wear coping plate 1 to set, at least one in the first pole 2 and the second pole 3 insulate with coping plate 1 assembles；Battery core 5, with
One pole 2 and the second pole 3 are electrically connected；Load resistance 6, one end is electrically connected with the first pole 2；And temp control switch 7, one
End is electrically connected with the second pole 3, and the other end is electrically connected with the other end of load resistance 6.Wherein, temp control switch 7 is normally opened
State, when the ambient temperature residing for secondary cell is more than or equal to certain value, temp control switch 7 is closed, the first pole
Post 2, load resistance 6, the second pole 3 and the formation discharge circuit of battery core 5.
In the secondary battery in accordance with the present invention, load resistance 6 and temp control switch 7 are provided with, when secondary cell institute
When the ambient temperature at place is more than or equal to certain value, temp control switch 7 is closed, the first pole 2, load resistance 6, second
Pole 3 and the formation discharge circuit of battery core 5, so that the electric energy of battery core 5 be converted into the heat energy of load resistance 6, by persistently disappearing
The electric energy in power consumption pond avoids battery and safety problem (for example exploding) occurs.
Remark additionally herein, the first pole 2 can be positive terminal or negative terminal, and correspondingly, the second pole 3 can be negative
Pole or positive terminal.Further remark additionally herein, above-mentioned " certain value " depend on secondary cell heat abuse when pair
The requirement of ambient temperature, usual above-mentioned " certain value " can be 80 DEG C, and this is not limited to certainly, can be according to secondary cell
Requirement during heat abuse to ambient temperature is suitably adjusted.
Referring to figs. 1 to Figure 11, in one embodiment, also included according to the secondary cell of the present invention：Housing 4, with coping plate 1
With reference to.Battery core 5 is contained in housing 4.
According in the secondary cell of the present invention, in one embodiment, referring to figs. 1 to Fig. 5 and Figure 10 and Figure 11, load electricity
Resistance 6 and temp control switch 7 may be provided at the outside or inside of housing 4.Remark additionally herein, work as secondary cell
When residing ambient temperature is more than or equal to certain value, load resistance 6 and temp control switch 7 are arranged at housing 4
The discharge circuit that is formed of outside can consume the electric energy of battery in time, reduce the risk of battery explosion.
In one embodiment, reference picture 4 and Fig. 5, the first pole 2 insulate with coping plate 1 to be assembled, the second pole 3 and top cover
Piece 1 is electrically connected, so that the first pole 2, load resistance 6, the second pole 3, coping plate 1 and the formation discharge circuit of battery core 5.
In one embodiment, temp control switch 7 may include：Cabinet 71, for carrying liquid；And conducting strip 72.Its
In, when the ambient temperature residing for secondary cell is more than or equal to certain value, liquid occurs vaporization and produces steam, steam
Conducting strip 72 is promoted to be electrically connected to the first pole 2 and the second pole 3 simultaneously until conducting strip 72, so that the first pole 2, second
Pole 3, load resistance 6 and the formation discharge circuit of battery core 5.
In one embodiment, reference picture 6 is to Fig. 9, and temp control switch 7 may also include：Diaphragm seal 73, is contained in cabinet 71
The interior formation circumferential seal with the inwall of cabinet 71 with by liquid-packing in cabinet 71；And connecting rod 74, wear cabinet 71, one end
Stretch into cabinet 71 and be connected to diaphragm seal 73 and the other end is exposed to cabinet 71 and supports conducting strip 72.Wherein, conducting strip 72
In outside cabinet 71.When the ambient temperature residing for secondary cell is more than or equal to certain value, liquid occurs vaporization and produced
Steam, Steam Actuation diaphragm seal 73, connecting rod 74 move to promote conducting strip 72 to rise until conducting strip 72 is while be electrically connected to
First pole 2 and the second pole 3, so that the first pole 2, load resistance 6, the second pole 3 and the formation electric discharge electricity of battery core 5
Road.
In one embodiment, cabinet 71, connecting rod 74, diaphragm seal 73 can be made up of insulating materials.
In one embodiment, the liquid can be water, not only limit certainly in this way, other liquid are also can select, as long as protecting
Demonstrate,proving selected liquid can vaporize when ambient temperature is more than or equal to certain value.
In one embodiment, reference picture 6 and Fig. 7, diaphragm seal 73 can for can elastic overturning into convex female tab body, when close
When mounting 73 moves and contacts cabinet 71, diaphragm seal 73 is turned into convex in the presence of steam by spill.
In one embodiment, temp control switch 7 may include：Temperature shape memory element 75, is single part or at least
Including two parts.Remark additionally herein, temperature shape memory element 75 has can produce change at a certain temperature
The function of shape.Wherein, when temperature shape memory element 75 be single part when, temperature shape memory element 75 can using Au, Ag,
More than at least two mischmetal in Cd, Cu, Zn, Al, Sn, Si, Ga, In, Ti, Ni, Fe, Pt, Pd, Nb, Fe, Mn, Ce, Br
Or the high polymer material for having memory effect to temperature is made.
In one embodiment, reference picture 6 and Fig. 7, temperature shape memory element 75 are single part, and temperature shape memory
Element 75 is made of an electrically conducting material.Wherein, when the ambient temperature residing for secondary cell is more than or equal to certain value, temperature
Shape memory member 75 is deformed and it is while be electrically connected to the first pole 2 and the second pole 3, so that the first pole 2,
Load resistance 6, the second pole 3 and the formation discharge circuit of battery core 5.
In one embodiment, reference picture 1 and Fig. 3, temp control switch 7 may also include：Conductive plate 76, positioned at temperature shape
On memory cell 75.Wherein, when the ambient temperature residing for secondary cell be more than or equal to certain value constantly, temperature shape
Memory cell 75 is deformed and promotes the motion upwards of conductive plate 76 so that conductive plate 76 is electrically connected to the first pole 2 and second
Pole 3, so that the first pole 2, load resistance 6, the second pole 3 and the formation discharge circuit of battery core 5.
In one embodiment, reference picture 4 and Fig. 5, temperature shape memory element 75 may include：Spring 751, spring is in pressure
Contracting state and compressive films 752, holddown spring 751 is to prevent spring 751 from flicking.Wherein, when the external rings residing for secondary cell
When border temperature is more than or equal to certain value, compressive films 752 melt, and spring 751 discharges from compressive films 752.
Remark additionally herein, when the temperature shape memory element 75 that spring 751 and compressive films 752 are synthesized individually is made
During for temp control switch 7, spring 751 is made of an electrically conducting material；And when the temperature shape of spring 751 and the composition of compressive films 752
When memory cell 75 is used cooperatively with above-mentioned conductive plate 76, spring 751 can also be made up of electrically non-conductive material.
In one embodiment, reference picture 1 and Fig. 3, temp control switch 7 may also include：Pedestal 77, houses and is fixedly connected
In temperature shape memory element 75.
In one embodiment, pedestal 77 is closed or not closed, and can be made up of insulating materials.
In one embodiment, compressive films 762 can be by least one in polythene PE, modified ABS, polystyrene and polyamide
Plant and be made.
In one embodiment, load resistance 6 can be one or more.
In one embodiment, load resistance 6 can be controllable resistor, can adjust the size of current of the discharge circuit.Enter
One step, the adjustable range of controllable resistor can be 6 milliohms between 600 Europe, certainly not only limit in this way, the regulation model of controllable resistor
Enclosing can suitably adjust according to actual conditions.
In one embodiment, controllable resistor can be ceramic resistor, wire resistor or metallic resistance.
Claims (10)
1. a kind of secondary cell, including：
Coping plate (1)；
First pole (2) and the second pole (3), wear in coping plate (1) setting, the first pole (2) and the second pole (3) extremely
Few one is assembled with coping plate (1) insulation；And
Battery core (5), is electrically connected with the first pole (2) and the second pole (3)；
Characterized in that, the secondary cell also includes：
Load resistance (6), one end is electrically connected with the first pole (2)；And
Temp control switch (7), one end is electrically connected with the second pole (3), and the other end and the other end of load resistance (6) are electrically connected
Connect；
Wherein, temp control switch (7) is normally open, when the ambient temperature residing for secondary cell is more than or equal to necessarily
During value, temp control switch (7) closure, the first pole (2), load resistance (6), the second pole (3) and battery core (5) formation are put
Circuit.
2. secondary cell according to claim 1, it is characterised in that temp control switch (7) includes：
Cabinet (71), for carrying liquid；And
Conducting strip (72)；
Wherein, when the ambient temperature residing for secondary cell is more than or equal to certain value, liquid occurs vaporization and produces steaming
Vapour, Steam Actuation conducting strip (72) until conducting strip (72) while be electrically connected to the first pole (2) and the second pole (3) so that
Make the first pole (2), the second pole (3), load resistance (6) and battery core (5) formation discharge circuit.
3. secondary cell according to claim 2, it is characterised in that temp control switch (7) also includes：
Diaphragm seal (73), be contained in cabinet (71) with cabinet (71) inwall formation circumferential seal with by liquid-packing in cabinet
(71) in；
Connecting rod (74), wears cabinet (71), and one end stretches into cabinet (71) and is connected to diaphragm seal (73) and the other end is exposed to
Cabinet (71) simultaneously supports conducting strip (72)；
Wherein, conducting strip (72) is located at cabinet (71) outside.
4. secondary cell according to claim 1, it is characterised in that temp control switch (7) includes：
Temperature shape memory element (75), is single part or at least includes two parts.
5. secondary cell according to claim 4, it is characterised in that temperature shape memory element (75) is single part,
And temperature shape memory element (75) is made of an electrically conducting material；
Wherein, when the ambient temperature residing for secondary cell is more than or equal to certain value, temperature shape memory element (75)
It is deformed and it is while be electrically connected to the first pole (2) and the second pole (3), so that the first pole (2), load resistance
(6), the second pole (3) and battery core (5) formation discharge circuit.
6. secondary cell according to claim 4, it is characterised in that temp control switch (7) also includes：
Conductive plate (76), on temperature shape memory element (75)；
Wherein, when the ambient temperature residing for secondary cell is more than or equal to certain value, temperature shape memory element (75)
It is deformed and promotes conductive plate (76) motion upwards so that conductive plate (76) is electrically connected to the first pole (2) and the second pole
(3), so that the first pole (2), load resistance (6), the second pole (3) and battery core (5) formation discharge circuit.
7. secondary cell according to claim 4, it is characterised in that temperature shape memory element (75) includes：
Spring (751), spring is in compressive state；
Compressive films (752), holddown spring (751) is to prevent spring (751) from flicking；
Wherein, when the ambient temperature residing for secondary cell is more than or equal to certain value, compressive films (752) fusing, spring
(751) discharged from compressive films (752).
8. secondary cell according to claim 7, it is characterised in that compressive films (762) by polyethylene (PE), modified ABS,
At least one of polystyrene and polyamide are made.
9. secondary cell according to claim 1, it is characterised in that load resistance (6) is controllable resistor, can adjust institute
State the size of current of discharge circuit.
10. secondary cell according to claim 9, the adjustable range of controllable resistor is 6 milliohms between 600 Europe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072895.9A CN107026253A (en) | 2016-02-02 | 2016-02-02 | Secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072895.9A CN107026253A (en) | 2016-02-02 | 2016-02-02 | Secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107026253A true CN107026253A (en) | 2017-08-08 |
Family
ID=59524291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610072895.9A Pending CN107026253A (en) | 2016-02-02 | 2016-02-02 | Secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107026253A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962205A (en) * | 2017-12-25 | 2019-07-02 | 惠州比亚迪电池有限公司 | Battery cover board assembly, single battery, battery modules, power battery pack and electric car |
| CN109962183A (en) * | 2017-12-25 | 2019-07-02 | 比亚迪股份有限公司 | Battery cover board assembly, single battery, battery modules, power battery pack and electric car |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3272942A (en) * | 1963-04-05 | 1966-09-13 | Brandl Wilhelm | Control switch for an electrical heating appliance |
| CN1317844A (en) * | 2000-04-12 | 2001-10-17 | 松下电器产业株式会社 | Non-aqueous electrolyte secondary battery and mfg. method |
| JP2002008628A (en) * | 2000-06-23 | 2002-01-11 | Toyota Motor Corp | Electrode winding-type secondary battery |
| JP2002110138A (en) * | 2000-09-29 | 2002-04-12 | Tokin Corp | Excessive current protection device |
| CN101228651A (en) * | 2005-07-20 | 2008-07-23 | 株式会社Lg化学 | Apparatus for protection of secondary battery |
| CN104603987A (en) * | 2012-07-25 | 2015-05-06 | 大众汽车瓦尔塔微电池研究有限责任两合公司 | Battery having a thermal switch |
| CN205376629U (en) * | 2016-02-02 | 2016-07-06 | 宁德时代新能源科技股份有限公司 | Secondary battery |
-
2016
- 2016-02-02 CN CN201610072895.9A patent/CN107026253A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3272942A (en) * | 1963-04-05 | 1966-09-13 | Brandl Wilhelm | Control switch for an electrical heating appliance |
| CN1317844A (en) * | 2000-04-12 | 2001-10-17 | 松下电器产业株式会社 | Non-aqueous electrolyte secondary battery and mfg. method |
| JP2002008628A (en) * | 2000-06-23 | 2002-01-11 | Toyota Motor Corp | Electrode winding-type secondary battery |
| JP2002110138A (en) * | 2000-09-29 | 2002-04-12 | Tokin Corp | Excessive current protection device |
| CN101228651A (en) * | 2005-07-20 | 2008-07-23 | 株式会社Lg化学 | Apparatus for protection of secondary battery |
| CN104603987A (en) * | 2012-07-25 | 2015-05-06 | 大众汽车瓦尔塔微电池研究有限责任两合公司 | Battery having a thermal switch |
| CN205376629U (en) * | 2016-02-02 | 2016-07-06 | 宁德时代新能源科技股份有限公司 | Secondary battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962205A (en) * | 2017-12-25 | 2019-07-02 | 惠州比亚迪电池有限公司 | Battery cover board assembly, single battery, battery modules, power battery pack and electric car |
| CN109962183A (en) * | 2017-12-25 | 2019-07-02 | 比亚迪股份有限公司 | Battery cover board assembly, single battery, battery modules, power battery pack and electric car |
| CN109962183B (en) * | 2017-12-25 | 2021-09-21 | 比亚迪股份有限公司 | Battery cover plate assembly, single battery, battery module, power battery pack and electric automobile |
| CN109962205B (en) * | 2017-12-25 | 2021-09-21 | 惠州比亚迪电池有限公司 | Battery cover plate assembly, single battery, battery module, power battery pack and electric automobile |
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