CN215869587U - Lithium battery protection device - Google Patents
Lithium battery protection device Download PDFInfo
- Publication number
- CN215869587U CN215869587U CN202122019346.4U CN202122019346U CN215869587U CN 215869587 U CN215869587 U CN 215869587U CN 202122019346 U CN202122019346 U CN 202122019346U CN 215869587 U CN215869587 U CN 215869587U
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- CN
- China
- Prior art keywords
- battery
- protection device
- housing
- battery core
- lithium battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 235000014676 Phragmites communis Nutrition 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 230000009467 reduction Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000005389 magnetism Effects 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- 244000089486 Phragmites australis subsp australis Species 0.000 claims 1
- 230000000694 effects Effects 0.000 description 11
- 230000008901 benefit Effects 0.000 description 9
- 238000001816 cooling Methods 0.000 description 8
- 241000883990 Flabellum Species 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
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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
Landscapes
- Battery Mounting, Suspending (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a lithium battery protection device, which aims at solving the problems that the function of the protection device cannot be ensured due to the special shape of a joint after a plurality of times of replacement and the cost is increased due to the fact that the protection device needs to be replaced each time after a plurality of times of replacement of disposable parts Stable structure and safe use.
Description
Technical Field
The utility model relates to the field of lithium batteries, in particular to a lithium battery protection device.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as a positive electrode material and a negative electrode material and uses a non-aqueous electrolyte solution, and a lithium battery core generates an overcharge phenomenon in charging, wherein after the overcharge voltage is higher than 4.2V, side effects can be generated, the higher the overcharge voltage is, the higher the danger is, when the lithium battery generates an overload condition, explosion can occur, and the explosion types can be summarized into three types of external short circuit, internal short circuit and overcharge according to the explosion type of the battery core.
At present, chinese patent application No. 201610269928.9 discloses a thermal protection device of lithium cell for mobile communication equipment, it includes the upper end fixedly connected with housing of shell, the shaping has two columniform sockets on the housing, peg graft in the socket of housing the upper end of leading electrical pillar, the lower extreme is pegged graft in the electrode holder of battery core, the both ends of connecting rod are fixed respectively on leading electrical pillar, the shaping has the louvre on the housing top face of connecting rod both sides, it has the cap to peg graft in the louvre, the lower extreme shaping of cap has the double-screw bolt, the double-screw bolt is connected on the fusible nut, the fusible nut is fixed on covering, the double-screw bolt on the plug bush have the pressure spring, the both ends of pressure spring press the cap respectively and cover on, the connecting rod support and lean on the up end of horizontal pole, peg graft respectively on the cap of connecting rod both ends. According to the utility model, when the lithium battery is overheated, the connected circuit can be disconnected, and meanwhile, the heat dissipation channel is opened to cool the lithium battery core body, so that explosion of the lithium battery is prevented.
This kind of thermal protection device of lithium cell for mobile communication equipment can carry out cooling treatment to the lithium cell, but as the easy soluble nut part of vulnerable article, it can the adhesion very be difficult to clear up in the upper cover after the use and fall into, and housing structure gas permeability is not good, make the unable fast circulation dispersion of heat that the battery core produced in the use, lead to battery core temperature upgrading easily, cause the use that influences protection device, because of it all need change at every turn to lead to the cost to improve to protect, consequently, improved space has.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a lithium battery protection device which can be quickly powered off when the voltage is higher, keeps the temperature around the battery proper, and has the advantages of repeated use, stable structure and safe use.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a lithium battery protection device, includes housing and battery holder, housing and battery holder joint, be provided with the battery core in the battery holder, the housing is provided with protection subassembly and elasticity reed, elasticity reed fixed mounting on the housing and contact with the battery core, the protection subassembly passes through magnetism and adsorbs elasticity reed and rather than the contact, the protection subassembly is connected elasticity reed and outer antithetical couplet piece, fan and metal sheet of making an uproar fall in the battery holder, fan and elasticity reed of making an uproar fall in the protection subassembly connection, the metal sheet is connected with the battery core, the intercommunication wind channel has been seted up in the battery holder.
By adopting the technical scheme, the battery core is protected in the battery seat, the battery core is prevented from being damaged due to collision when in use, so that electrolyte in the battery core is not stable, the battery seat is clamped with the housing which is internally provided with the protection component and the elastic reed, the elastic reed is normally contacted with the battery core and is contacted with the battery core under the guidance of the magnetic force of the protection component, after the magnetism of the protection component disappears, the elastic reed resets to be separated from the battery core to achieve the effect of disconnecting the circuit, the elastic reed is connected with external electric equipment through an external connecting piece connected with the protection component, so that the battery core is far away from the electric equipment when in use, the internal overheating of the battery caused by the high temperature of the electric equipment is prevented, the protection component can charge the battery core, the protection component can prevent the large current from being directly transmitted into the battery core to cause the disorder of the battery liquid of the battery core, the intercommunication wind channel that the fan cooperation battery tray of making an uproar of falling of battery tray installation was seted up can effectively be cooled down to it when battery core temperature risees, and the space of circulation also makes the battery core can remain stable operating temperature when using, and above-mentioned structure satisfies at emergency fast power-off, and the elasticity reed is used repeatedly and is provided with multiple protection battery core 4's structure, has used repeatedly, stable in structure, advantage safe in utilization.
Further, the protection component comprises a control circuit board and an electromagnetic device which are fixed on the housing, the elastic spring piece swings to abut against the electromagnetic device, a terminal is arranged on the control circuit board, and the terminal is connected with the noise reduction fan and the elastic spring piece.
Adopt above-mentioned technical scheme, the protection subassembly passes through electromagnetic means and produces the magnetic adsorption elasticity reed, electromagnetic means is controlled by control circuit board, can detect the condition that voltage is more than 4.2V in control circuit board, make electromagnetic means attract through the detection to voltage, release the elasticity reed, the terminal that sets up on the control circuit board passes through the wire and falls the fan and be connected with the elasticity reed of making an uproar, make the fan of making an uproar of control circuit board control and open, charge to the battery core in the prevailing circumstances, it is stable to improve the battery core charging, and has a simple structure, control stable advantage.
Further, the noise reduction fan is arranged on two sides of the battery seat close to the elastic spring plates.
By adopting the technical scheme, because the contact area of the elastic spring and the battery core body is smaller, the current generated at the joint is larger, the heat is more easily generated and dangerous, and therefore the temperature of the part can be effectively reduced by cooling the noise reduction fan close to the area, and the air cooling effect of the device is improved.
Furthermore, the battery holder is provided with through grooves on two sides of the communicating air duct, movable fan blades are arranged in the through grooves, and the movable fan blades are multiple and are symmetrically arranged on two sides of the housing.
Adopt above-mentioned technical scheme, set up the logical groove in both sides intercommunication wind channel both sides, have the effect that makes inside gas circulation, further promoted the cooling effect of fan of making an uproar to install movable flabellum in leading to the groove, make it prevent piling up of dust, inside the battery holder of clearance more easily, still have the effect of keeping battery holder stable in structure.
Further, the cover shell and the battery holder are made of plastic materials.
By adopting the technical scheme, the battery holder is connected with the housing and the conductive structure, the common current of the lithium battery is small, the occurrence of the electric leakage condition can be effectively prevented through the plastic material, and the lithium battery has the advantages of improving the protection capability and saving the cost.
Further, a conductive spring is arranged on the metal plate.
Adopt above-mentioned technical scheme, the battery core is in the installation with uninstallation enable through the light completion access action of conductive spring, conductive spring is little with the area of contact of battery core, the resistance of institute runoff can play the impedance effect greatly, make battery in use current stabilization, consequently have the advantage that makes things convenient for the assembly of battery core, promote battery core steady voltage.
Further, the spring reed is made of brass material.
By adopting the technical scheme, the brass material has strong conductivity and ductility, and can resist electric corrosion to a certain extent in long-term use.
In conclusion, the utility model has the following beneficial effects:
1. the battery core body, the elastic reed, the control circuit board, the metal plate and the external linkage form a charging circuit in the charging process, the control circuit board controls the electromagnetic device to enable the electromagnetic device to adsorb the elastic reed, the battery core body can be quickly opened and protected under the condition of receiving a large voltage, and the elastic reed can automatically reset by depending on the self property after the magnetism of the electromagnetic device disappears, so that the battery core body has the advantages of repeated use, stable structure and safe use;
2. through being provided with in the battery tray and falling fan and intercommunication wind channel of making an uproar, carry out effectual forced air cooling to the whole body of battery core and handle, have rapid cooling's technological effect to the movable flabellum of installation can effectual side indicate collide with, and conveniently clear up battery tray inside, have the advantage that improves battery core life.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic structural view of the present embodiment with a portion of the cover removed;
fig. 3 is a structural sectional view of the present embodiment.
In the figure: 1. a battery holder; 11. a housing; 12. a noise reduction fan; 13. a movable fan blade; 14. a through groove; 15. the air duct is communicated; 16. a conductive spring; 17. a metal plate; 2. a protection component; 21. a control circuit board; 22. a terminal; 23. an electromagnetic device; 3. an elastic reed; 4. a battery core body; 41. connecting the electrodes; 42. communicating the electrodes; 5. an outer connecting piece.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
The utility model provides a lithium battery protection device, is one kind and is provided with the voltage protection mechanism, connects charging circuit through the elasticity reed that can repetitious usage, makes its protection battery core body many times, still is provided with the air-cooled system in the device, can keep its stability suitable around it in battery operation process, is a lithium battery protection device who has circuit protection and temperature control concurrently.
Referring to fig. 1, 2 and 3, the present invention provides an embodiment, which includes a battery holder 1 and a casing 11, wherein the battery holder 1 is a rectangular casing structure, the battery holder 1 and the casing 11 are made of plastic, a plurality of conductive metal devices are installed in the battery holder 1 and the casing 11, in order to prevent the problem of electric leakage or circuit mixing, a non-conductive plastic material can effectively avoid the above-mentioned situation, the end part of the battery holder is provided with a square opening, the end part of the battery holder 1 at the opening is clamped with the cover shell 11, the battery core 4 passes through the square opening and is arranged in the battery holder 1, the battery core 4 is of a square structure, the upper end face of the battery core body is provided with two connecting electrodes 41, the two connecting electrodes 41 are symmetrically arranged on two sides of the upper end face of the battery core body 4, the lower end face of the battery core body 4 is provided with two communicating electrodes 42, and the two communicating electrodes 42 are symmetrically arranged on two sides of the lower end face of the battery core body 4. The protective component 2 and the elastic spring 3 are arranged in the housing 11, wherein one end of the elastic spring 3 is fixed on the housing 11, the other end of the elastic spring 3 is in contact with the connecting electrode 41 of the battery core 4, the number of the elastic springs 3 is two, the elastic spring 3 has stronger elasticity, the elastic spring 3 is made of brass material, the brass material has very strong conductivity and ductility, and can resist electric corrosion to a certain extent in long-time use, so that the elastic spring 3 has high efficiency and durable characteristics, the protective component 2 is arranged at the central position of the housing 11, the protective component 2 is connected with the elastic spring 3 through a circuit, the protective component 2 has magnetism when being electrified and can adsorb the elastic spring 3 to be in contact with the elastic spring, the housing 11 is also provided with an external connecting piece 5 penetrating through the shell, the external connecting piece 5 is of a metal lead or a metal switch structure, and has a certain length and is used for communicating with external electrical appliances, the protection component 2 is connected with the external connection piece 5, the noise reduction fan 12 and the metal plate 17 are installed in the battery holder 1, parts of the metal plate 17 are arranged at the bottom of an inner cavity formed in the battery holder 1, and the metal plate 17 is in contact with a communication electrode 42 of the battery core body 4, so that the battery core body 4, the metal plate 17, the elastic spring piece 3, the protection component 2 and the external connection piece 5 form a charge-discharge circuit, and the working requirement of the battery core body 4 is met; protection component 2 passes through the circuit and falls fan 12 of making an uproar and be connected, the inside intercommunication wind channel 15 of having seted up all around battery core 4 of battery seat 1, fan 12 of making an uproar carries out the forced air cooling processing to battery core 4 in the cooperation, through the structure, this protection device can satisfy the technological effect of battery core 4 in short-circuit protection, and because of the nature of elasticity reed 3 self and with battery core 4's connected mode, can use repeatedly, the forced air cooling system of battery seat 1 inside setting has the temperature stability that keeps battery core 4 at the during operation, increase battery core 4's life-span, consequently, reuse has, stable in structure, advantage safe in utilization.
Referring to fig. 2, the protection component 2 includes a control circuit board 21 and an electromagnetic device 23 mounted on the housing 11, wherein the control circuit board 21 is mounted in the middle of the housing 11, the housing 11 is provided with two connecting slots facing the connecting electrode 41, the electromagnetic device 23 is embedded in the connecting slots, the control circuit board 21 is mounted with a plurality of terminals 22, the terminals 22 are respectively connected with the noise reduction fan 12, the elastic reed 3 and the electromagnetic device 23, wherein the electromagnetic device 23 has the function of an electromagnet, the elastic reed 3 made of metal swings through the generated magnetism when the electromagnet is powered on, the elastic reed 3 swings and abuts against the electromagnetic device 23, the control circuit is connected with the external connecting piece 5 to detect the condition that the voltage exceeds 4.2V, when the condition occurs, the control circuit board 21 controls the electromagnetic device 23 to adsorb the elastic reed 3, and then the elastic reed 3 is separated from the connecting motor, the technical effect of disconnecting the charging and discharging circuit is achieved, the control circuit board 21 is connected with other electric devices through the terminal 22, and the control of the electric devices is more stable compared with the direct connection with the charging and discharging circuit.
Referring to fig. 2 and 3, the noise reduction fan 12 is disposed on both sides of the battery holder 1 near the elastic spring 3, and since the contact area between the elastic spring 3 and the connection electrode 41 is small, a large amount of heat is generated due to a cross-sectional current effect, and by disposing the noise reduction fan 12 near the position, the temperature can be reduced first; battery holder 1 sets up logical groove 14 that runs through it in the both sides in intercommunication wind channel 15, logical groove 14 is square groove, install a plurality of movable flabellum 13 through the articulated in logical groove 14, movable flabellum 13 is the rectangle structure and arranges in logical groove 14 along the line nature, movable flabellum 13 rotates and not contact with battery core 4 in logical groove 14, movable flabellum 13 symmetrical arrangement is in battery holder 1 both sides, the cooperation is installed and is fallen fan 12 of making an uproar in battery holder 1, the air current that makes the production forms the wind direction of subtend circulation, fall fan 12 of making an uproar, intercommunication wind channel 15 cooperation movable flabellum 13 constitutes cold wind system, divide cold process to the battery, reduce the temperature that the battery produced when using and make the temperature keep at stable within range.
Referring to fig. 3, be provided with conductive spring 16 on the metal sheet 17, conductive spring 16 be two and with battery core 4's intercommunication electrode 42 butt, conductive spring 16 has elasticity, battery core 4 is installed in battery tray 1, conductive spring 16 separates battery core 4 and metal sheet 17, avoided because of the galvanic corrosion of metal sheet 17 with the long-time contact production of battery core 4, lead to the condition that both adhesion are difficult to get rid of or even scrap, battery core 4 can be more convenient when filling and replacing takes out, battery core 4 is scrapped in having to avoid galvanic corrosion, improve the advantage of installation effectiveness to a certain extent.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (7)
1. The utility model provides a lithium battery protection device, includes housing (11) and battery holder (1), housing (11) and battery holder (1) joint, be provided with battery core (4), its characterized in that in battery holder (1): housing (11) are provided with protection component (2) and elasticity reed (3), elasticity reed (3) fixed mounting on housing (11) and with battery core (4) contact, protection component (2) pass through magnetism and adsorb elasticity reed (3) and rather than contact, elasticity reed (3) and outer antithetical couplet piece (5) are connected in protection component (2), install in battery seat (1) and fall fan (12) and metal sheet (17) of making an uproar, fan (12) and elasticity reed (3) of making an uproar fall in protection component (2) connection, metal sheet (17) are connected with battery core (4), intercommunication wind channel (15) have been seted up in battery seat (1).
2. A lithium battery protection device according to claim 1, characterized in that: the protection component (2) comprises a control circuit board (21) and an electromagnetic device (23) which are fixed on a housing (11), the elastic spring piece (3) swings to abut against the electromagnetic device (23), a terminal (22) is arranged on the control circuit board (21), and the terminal (22) is connected with the noise reduction fan (12) and the elastic spring piece (3).
3. A lithium battery protection device according to claim 1, characterized in that: the noise reduction fan (12) is arranged on two sides of the battery holder (1) close to the elastic reeds (3).
4. A lithium battery protection device according to claim 3, characterized in that: the battery holder (1) is provided with through grooves (14) on two sides of a communicating air duct (15), movable fan blades (13) are installed in the through grooves (14), and the movable fan blades (13) are multiple and are symmetrically arranged on two sides of the housing (11).
5. A lithium battery protection device according to claim 1, characterized in that: the cover shell (11) and the battery holder (1) are made of plastic materials.
6. A lithium battery protection device according to any one of claims 1 to 5, characterized in that: and a conductive spring (16) is arranged on the metal plate (17).
7. A lithium battery protection device according to any one of claims 1 to 5, characterized in that: the elastic spring leaf (3) is made of brass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019346.4U CN215869587U (en) | 2021-08-25 | 2021-08-25 | Lithium battery protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019346.4U CN215869587U (en) | 2021-08-25 | 2021-08-25 | Lithium battery protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215869587U true CN215869587U (en) | 2022-02-18 |
Family
ID=80242643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122019346.4U Expired - Fee Related CN215869587U (en) | 2021-08-25 | 2021-08-25 | Lithium battery protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215869587U (en) |
-
2021
- 2021-08-25 CN CN202122019346.4U patent/CN215869587U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |