CN215498339U - Battery overheating and charger automatic power-off protection device for electric bicycle - Google Patents
Battery overheating and charger automatic power-off protection device for electric bicycle Download PDFInfo
- Publication number
- CN215498339U CN215498339U CN202121559053.9U CN202121559053U CN215498339U CN 215498339 U CN215498339 U CN 215498339U CN 202121559053 U CN202121559053 U CN 202121559053U CN 215498339 U CN215498339 U CN 215498339U
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- Prior art keywords
- heat insulation
- insulation box
- battery
- box
- galvanized steel
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- Expired - Fee Related
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- 238000013021 overheating Methods 0.000 title claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 109
- 238000009423 ventilation Methods 0.000 claims abstract description 38
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 53
- 239000008397 galvanized steel Substances 0.000 claims description 53
- 230000005484 gravity Effects 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses an electric bicycle battery overheating and charger automatic power-off protection device, belonging to the field of electrical equipment protection; the device can cut off a circuit in time when the battery is locally overheated due to faults such as internal short circuit and the like and has hidden danger of explosion when the battery works in the charging process of the battery, and once the battery spontaneously ignites, the flame can be effectively limited in a heat insulation box; the automatic power-off protection device works after the battery is fully charged, a green light of the charger automatically enters a floating charging state when the green light of the charger is turned on, and the battery is automatically powered off after floating charging for two hours, and the battery overheating protection device comprises five temperature sensors and a heat insulation box (containing two low-power ventilation fans); the automatic power-off protection device comprises a protection circuit which can automatically power off the charger after the battery is fully charged, and the protection circuit is arranged on the charger and takes electricity from the charger.
Description
Technical Field
The utility model relates to a battery protection device for an electric bicycle.
Background
Electric bicycles have become popular transportation tools for many people in recent years due to their advantages of environmental protection, high cost performance, simple driving method, convenience, labor saving, self-charging at home, and the like, and the amount of their reserves has increased year by year.
The battery of the electric vehicle on the market at present is a lead storage battery or a lithium battery, the lead storage battery is large in size and weight, most vehicle owners choose to charge the charging pile, the lithium battery is small in size and light in weight, self-charging at home is a convenient and cost-effective choice for the vehicle owners, however, many people charge the vehicle by bike at night in the daytime, and people are often in the early morning when the vehicle is asleep, so that overcharging of the battery is a very common phenomenon, and potential safety hazards generated by the overcharging are also swords hanging on the vehicle owners and the family members.
Disclosure of Invention
The utility model aims to solve the technical problem that the over-charging of the battery of the electric bicycle is possible, and provides a device for protecting the battery of the electric bicycle from overheating and the charger from automatically cutting off power.
Technical scheme
In order to solve the technical problems, the utility model adopts the technical scheme that,
the battery overheating and charger automatic power-off protection device of the electric bicycle comprises a battery self overheating power-off protection device and a full-charging automatic power-off protection device in the battery charging process, a control signal of the automatic power-off protection device obtains voltage from two ends of a green indicator lamp of a charger, a relay K1 is electrified, a K1 normally open contact enables a time relay to be electrified, the time relay sets a delay time in advance, a delay contact of the delay end time relay is disconnected to enable a switch relay K2 to be electrified, the relay K2 controls a normally closed contact connected in a charging loop to be disconnected, and a power supply is cut off.
Furthermore, five temperature sensors are respectively clung to the four side walls and the upper end face of the battery through fixing devices, the temperature sensors can transfer heat to positive temperature coefficient thermistors in the sensors, the thermistors are mutually connected in series to be connected to an N line in a circuit of the charger automatic power-off protection device, the set temperature of the thermistors is 60 ℃ (the normal working temperature of the battery of the electric bicycle is-20 ℃ -60 ℃), any thermistor can suddenly rise in resistance when detecting the high temperature of 60 ℃ or above through the temperature sensors, the circuit is cut off, and charging is forced to stop.
Furthermore, when the battery of the electric vehicle is burnt violently, the temperature is 1100-1200 ℃, the inner layer of the heat insulation box is made of galvanized steel sheets, the outer layer of the heat insulation box is made of ceramics which can resist the high temperature of more than 1200 ℃, and even if the battery is spontaneously combusted in an extreme condition, the heat insulation box can control flame in the box under the condition that the battery is continuously burnt after power failure, so that fire disasters are prevented.
Furthermore, two small-sized ventilation fans with the diameter within 10cm are installed on the left side wall and the right side wall of the heat insulation box, the ventilation fans are arranged diagonally, good ventilation and heat dissipation are kept in the box when the battery is charged, and the two ventilation fans are connected into a circuit in parallel with the battery respectively.
Further, in the box inboard, respectively fix a length of side for 10 cm's square galvanized steel sheet through hinge and magnet in two fan openings tops, can rotate downwards around the hinge when square galvanized steel sheet breaks away from the magnet fixed under the action of gravity, can cover the fan trompil completely after static, when square galvanized steel sheet is fixed by magnet, fix a bimetallic strip of temperature sensing in the inboard galvanized steel sheet of box and square galvanized steel sheet coincidence part department, the bimetallic strip can take place deformation when the temperature reaches 100 ℃ and above, bimetallic strip deformation can promote the steel sheet to break away from the magnet fixed and then cover the fan trompil, flame outwards stretches through the fan trompil when can effectively preventing the battery from taking place the burning condition, also can play the effect of the poisonous gas that isolated air and battery burning produced simultaneously.
Advantageous effects
The utility model has the advantages that through the arrangement of the overheat protection device of the charger after the battery is fully charged and the overheat protection device in the charging process of the battery of the electric bicycle, the power supply can be cut off in time once the battery is overheated due to internal faults in the charging process of the battery of the electric bicycle, if the battery is still heated continuously until burning after power failure, the heat insulation box can also play a role in isolating external air to extinguish fire and limiting limited flame in the box, after the battery is normally charged until a green light is lighted, the automatic power-off protection device of the charger can enable the battery to continue to be subjected to floating charge for two hours, the power is cut off immediately after floating charge is finished, the long-time overcharge of the battery can be effectively avoided, and the safety of a vehicle owner for charging the battery at night is greatly improved.
Drawings
FIG. 1 is a left side view of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is a top view of the present invention;
fig. 4 is a circuit schematic diagram of the charger auto-power-off protection device of the present invention.
Description of reference numerals: a fixing device 1 for closing the heat insulation box cover, a heat insulation box cover 2, a hinge 3 for fixing the heat insulation box cover, a heat insulation box left side magnet 4, a heat insulation box left side bimetallic strip 5, a heat insulation box left side square galvanized steel plate 6, a heat insulation box left side hinge 7 for fixing the square galvanized steel plate, a heat insulation box left side ventilating fan 8, an electric bicycle battery original charger 9, a heat insulation box right side magnet 10, a heat insulation box right side bimetallic strip 11, a heat insulation box right side square galvanized steel plate 12, a heat insulation box right side hinge 13 for fixing the square galvanized steel plate, a heat insulation box right side ventilating fan 14, a one-to-four wire quick connector 15, a heat insulation box alumina ceramic layer 16, a box inner side galvanized steel plate 17, a battery plug connecting piece 18, an electric bicycle original charger wire 19, a charger automatic power-off protection device 20, a charger plug 21, a wire 22 for supplying power to the heat insulation box left side ventilating fan, the device comprises a wire 23 for supplying power to a ventilation fan on the right side of the heat insulation box, a temperature sensor 24, an elastic band 25 for fixing the temperature sensor on the surface of a battery, a wire 26 for connecting the thermistor into a circuit of the automatic power-off protection device of the charger, a wire 27 for supplying power to the battery, a green indicator light 28 of the charger, normally open contacts 30 of control relays K129 and K129, a time relay JSS48A31, a time delay contact 32 of the time relay, a relay K233, a triode VT 34, a diode VD135, a diode VD236, a resistor R137, a resistor R238 and five positive temperature coefficient thermistors 39.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The battery overheating and charger automatic power-off protection device of the electric bicycle comprises a heat insulation box and an elastic band 25 used for fixing 5 temperature sensors 24 on the surface of the battery; the heat insulation box left side ventilation fan 8 and the heat insulation box right side ventilation fan 14 are arranged on the side surface of the heat insulation box and are respectively connected with the battery in parallel in a circuit; the side length of the square galvanized steel plate 6 on the left side of the heat insulation box and the side length of the square galvanized steel plate 12 on the right side of the heat insulation box are 10 cm; a hinge 7 of a square galvanized steel plate is fixed on the left side of the heat insulation box; a hinge 13 of a square galvanized steel plate is fixed on the right side of the heat insulation box; a bimetallic strip 5 on the left side of the heat insulation box; a bimetallic strip 11 on the right side of the heat insulation box; a thermally insulated box cover 28; a hinge 2 for fixing the heat insulation box cover; the quick connector 15 of one-to-four wires penetrating through the box body is connected with an automatic power-off protection device 20, and the automatic power-off protection device 20 is connected in a circuit of a battery original charger 9 of the electric bicycle.
More specifically, the heat insulation box is 70cm long, 50cm wide and 50cm high and comprises an inner layer and an outer layer, the inner layer is a galvanized steel plate 17 on the inner side of the box body and is 1cm thick, the outer layer is an alumina ceramic layer 16 on the outer side of the box body and is 2cm thick, square holes with the side length of 8cm are respectively formed in the left side surface and the right side surface of the heat insulation box for mounting a left ventilation fan 8 and a right ventilation fan 14 of the heat insulation box, the two ventilation fans are arranged in a diagonal manner, the left ventilation fan 8 of the heat insulation box is used for air inlet, the right ventilation fan 14 of the heat insulation box is used for air outlet, the heat dissipation effect is enhanced, an electric wire 22 used for supplying power to the left ventilation fan of the heat insulation box, an electric wire 23 used for supplying power to the right ventilation fan of the heat insulation box is led out in parallel through a one-to-four electric wire quick connector 15 by an electric wire 27 used for supplying power to a battery, and a proper groove is carved on the inner side of the alumina ceramic layer 16 of the heat insulation box for arranging the electric wire 22 used for supplying power to the left ventilation fan of the heat insulation box, A electric wire 23 for being directed at heat-insulating box right side ventilation fan power supply, heat-insulating box left side ventilation fan 8, heat-insulating box right side ventilation fan 14 are parallelly connected with the battery respectively on the schematic circuit diagram, and the heat-insulating box right flank is opened has a long 5cm wide 3 cm's rectangular hole, and one divides into four electric wire quick-operation joint 15 to run through the heat-insulating box, and intercommunication external equipment gives the battery and the ventilation fan power supply, and the while inserts thermistor in the former charger 9 protection return circuits that joins in marriage of electric bicycle battery.
More specifically, five temperature sensors 24 are respectively clung to four sides and the upper end surface of the battery through elastic bands 25 for fixing the temperature sensors on the surface of the battery, the elastic bands 25 for fixing the temperature sensors on the surface of the battery are connected with a galvanized steel plate 17 on the inner side of the box body, a one-to-four wire quick connector 15 penetrates through the side surface of the heat insulation box, the wire specification is consistent with the wire specification of a battery original charger 9 of a standard electric bicycle battery electric bicycle, the tail end of a wire 27 for supplying power to the battery in the box is connected with a battery charging port through a battery plug connecting piece 18 during charging, a wire 22 for supplying power to a left side ventilation fan of the heat insulation box, a wire 23 for supplying power to a right side ventilation fan of the heat insulation box is used for supplying power to a left side ventilation fan 8 of the heat insulation box and a right side ventilation fan 14 of the heat insulation box, and a wire 26 for connecting the thermistor to a circuit of an automatic power-off protection device of the charger is used for supplying power to supply five positive temperature-coefficient thermistors 39 controlled by the temperature sensors The charger automatic power-off protection device 20 is connected into a circuit of the charger automatic power-off protection device 20 in series, an electric wire 19 of an electric bicycle battery original charger outside the box is connected with the electric bicycle battery original charger 9, and the charger automatic power-off protection device 20 is externally connected to the electric bicycle battery original charger 9. The circuit of the one-to-four wire quick connector 15 should be modified as follows: the electric wire 22 for supplying power to the left side ventilation fan of the heat insulation box and the electric wire 23 for supplying power to the right side ventilation fan of the heat insulation box are connected in parallel with the electric wire 27 for supplying power to the battery, and five positive temperature coefficient thermistors 39 controlled by five temperature sensors 24 are connected in series with the N wire of the electric bicycle original distribution charger electric wire 19 of the charger automatic power-off protection device through the electric wire 26 for connecting the thermistors into the circuit of the charger automatic power-off protection device.
More specifically, a hinge 7 for fixing a square galvanized steel sheet on the left side of the heat insulation box, a hinge 13 for fixing a square galvanized steel sheet on the right side of the heat insulation box, a magnet 4 on the left side of the heat insulation box, and a magnet 10 on the right side of the heat insulation box are fixed on the inner side of the heat insulation box, respectively, a square galvanized steel sheet 6 on the left side of the heat insulation box with the side length of 10cm and a square galvanized steel sheet 12 on the right side of the heat insulation box are fixed on the left side of the heat insulation box, the magnet 4 on the left side of the heat insulation box and the magnet 10 on the right side of the heat insulation box are fixed on the left side of the heat insulation box, the square galvanized steel sheet 6 on the right side of the heat insulation box are fixed on the square galvanized steel sheet of 10cm, the hinge 13 for fixing the square galvanized steel sheet 6 on the left side of the heat insulation box and the magnet 10 on the right side of the heat insulation box is turned upwards to enable the magnet 4 on the left side of the heat insulation box and the magnet 10 on the inner side of the box to be adsorbed on the galvanized steel sheet 17 of the box, and further to enable the square galvanized steel sheet 6 on the left side of the heat insulation box to be turned upwards, The square galvanized steel sheet 12 on the right side of the heat insulation box is fixed, the square galvanized steel sheet 6 on the left side of the heat insulation box and the square galvanized steel sheet 12 on the right side of the heat insulation box are fixed by magnets, a temperature-sensing heat insulation box left side bimetallic strip 5 and a heat insulation box right side bimetallic strip 11 are respectively fixed at the superposition part of the square galvanized steel sheet 17 on the inner side of the box body and the square galvanized steel sheet 6 on the left side of the heat insulation box and the superposition part of the square galvanized steel sheet 12 on the right side of the heat insulation box, the heat insulation box left side bimetallic strip 5 and the heat insulation box right side bimetallic strip 11 can deform when the temperature reaches 100 ℃ and above, the deformation of the heat insulation box left side bimetallic strip 5 and the heat insulation box right side bimetallic strip 11 can push the square galvanized steel sheet 6 on the left side of the heat insulation box and the square galvanized steel sheet 12 on the right side of the heat insulation box to be separated from the magnet 4 on the left side of the heat insulation box and the magnet 10 is fixed, the square galvanized steel sheet 6 on the left side of the heat insulation box and the square galvanized steel sheet 12 on the right side of the heat insulation box can wind the hinge 7 of the left side of the heat insulation box under the action of gravity, Hinge 13 of the fixed square galvanized steel sheet in heat-insulating box right side rotates downwards, can cover the ventilation fan trompil completely after static, and flame outwards stretches through the ventilation fan trompil when can effectively preventing the battery from taking place the burning condition from this, also can play the effect of the poisonous gas that isolated air and battery burning produced simultaneously, can make flame extinguish automatically after exhausting incasement oxygen.
More specifically, the control signal of the automatic power-off protection device is led out from a green indicator light 28 of the charger (about 2.8VDC), a normally open contact 30 of control relays K129 and K129 controls a time relay JSS48A31, the time relay can be set randomly between 1 second and 99 hours, a delay contact 32 of the time relay is used for controlling a relay K233, the other control elements are a triode VT 34 which is a C8050 type NPN triode, a diode VD135 and a diode VD236 which are 1N4007 diodes, a resistor R137 which is 1/4W and a 10K omega trimming resistor, a resistor R238 which is 1/4W and a 10K omega metal film resistor, and a +12V power supply of the automatic power-off protection device is taken from a cooling fan of the charger.
When the battery of the electric vehicle is fully charged, the green indicator light 28 of the charger is lightened, the voltage obtained from the light emitting diode is added to the base electrode of the triode VT 34 through the resistor R137, the VT 34 is conducted, the coil of the relay K129 is electrified, the K129 normally open contact is closed, the coil of the time relay KT 31 is electrified to start timing, the battery enters a floating charging state, when the time reaches a preset setting value, the time delay normally open contact 32 is closed, the coil of the switch relay K233 is electrified, the power supply is disconnected, and the floating charging of the battery is finished.
Claims (2)
1. The battery overheating and charger automatic power-off protection device for the electric bicycle is characterized in that five temperature sensors (24) are tightly attached to four side faces and the upper end face of a battery through elastic bands (25) used for fixing the temperature sensors on the surface of the battery respectively, the elastic bands (25) used for fixing the temperature sensors on the surface of the battery are connected with galvanized steel plates (17) on the inner side of a box body, a one-to-four wire quick connector (15) penetrates through the side face of a heat insulation box, the wire specification is consistent with the wire specification used by a standard electric bicycle battery charger, the tail end of a wire (27) used for supplying power to the battery is connected with a battery charging port through a battery plug connecting piece (18) during charging, a wire (22) used for supplying power to a left side ventilation fan of the heat insulation box, and wires (23) used for supplying power to a right side ventilation fan of the heat insulation box respectively supply power to a left ventilation fan (8) of the heat insulation box, The right side ventilation fan (14) of the heat insulation box supplies power, an electric wire (26) for connecting the thermistor to the circuit of the automatic power-off protection device of the charger enables a positive temperature coefficient thermistor (39) controlled by the temperature sensor to be connected to the circuit of the automatic power-off protection device of the charger (20), an electric wire (19) of the electric bicycle original charger is connected with the electric bicycle battery original charger (9), and the automatic power-off protection device of the charger (20) is externally connected to the electric bicycle battery original charger (9).
2. The device for protecting the battery of the electric bicycle from overheating and the automatic power-off of the charger as claimed in claim 1, wherein the hinge (7) for fixing the square galvanized steel plate on the left side of the heat shield box, the hinge (13) for fixing the square galvanized steel plate on the right side of the heat shield box, the magnet (4) on the left side of the heat shield box, and the magnet (10) on the right side of the heat shield box are fixed with the square galvanized steel plate (6) on the left side of the heat shield box and the square galvanized steel plate (12) on the right side of the heat shield box respectively inside the heat shield box, and the hinge (7) for fixing the square galvanized steel plate around the left side of the heat shield box under the action of gravity when the square galvanized steel plate (6) on the left side of the heat shield box and the square galvanized steel plate (12) on the right side of the heat shield box are separated from the magnet (4) on the left side of the heat shield box and the magnet (10) on the right side of the heat shield box are fixed, Hinge (13) of the square galvanized steel sheet fixed on the right side of the heat insulation box can downwards turn over the ventilation fan (8) on the left side of the heat insulation box, the opening of the ventilation fan (14) on the right side of the heat insulation box is completely covered, square galvanized steel sheet (6) on the left side of the heat insulation box, square galvanized steel sheet (12) on the right side of the heat insulation box is fixed by magnet (4) on the left side of the heat insulation box, magnet (10) on the right side of the heat insulation box is fixed, heat insulation box left bimetallic strip (5) capable of sensing temperature is fixed at the superposition part of the square galvanized steel sheet (12) on the right side of the heat insulation box and the galvanized steel sheet (17) on the inner side of the box, bimetallic strip (11) on the left side of the heat insulation box can deform when the temperature reaches 100 ℃, bimetallic strip (5) on the left side of the heat insulation box, bimetallic strip (11) on the right side of the heat insulation box can push the square galvanized steel sheet (6) on the left side of the heat insulation box and the square galvanized steel sheet (6) on the right side of the heat insulation box and can deform, The square galvanized steel sheet (12) on the right side of the heat insulation box breaks away from the fixing of the magnet (4) on the left side of the heat insulation box and the magnet (10) on the right side of the heat insulation box, so that the holes of the ventilation fan (8) on the left side of the heat insulation box and the ventilation fan (14) on the right side of the heat insulation box are covered, and the flame can be effectively prevented from spreading outwards through the holes of the ventilation fan (8) on the left side of the heat insulation box and the ventilation fan (14) on the right side of the heat insulation box when the battery is burnt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121559053.9U CN215498339U (en) | 2021-07-09 | 2021-07-09 | Battery overheating and charger automatic power-off protection device for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121559053.9U CN215498339U (en) | 2021-07-09 | 2021-07-09 | Battery overheating and charger automatic power-off protection device for electric bicycle |
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| Publication Number | Publication Date |
|---|---|
| CN215498339U true CN215498339U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121559053.9U Expired - Fee Related CN215498339U (en) | 2021-07-09 | 2021-07-09 | Battery overheating and charger automatic power-off protection device for electric bicycle |
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| Country | Link |
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| CN (1) | CN215498339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315212A (en) * | 2021-07-09 | 2021-08-27 | 哈尔滨理工大学 | Battery overheating and charger automatic power-off protection device for electric bicycle |
| CN115603010A (en) * | 2022-11-28 | 2023-01-13 | 惠州市纬世新能源有限公司（Cn） | Lithium battery cell with built-in short-circuit protection structure |
-
2021
- 2021-07-09 CN CN202121559053.9U patent/CN215498339U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315212A (en) * | 2021-07-09 | 2021-08-27 | 哈尔滨理工大学 | Battery overheating and charger automatic power-off protection device for electric bicycle |
| CN113315212B (en) * | 2021-07-09 | 2024-06-07 | 哈尔滨理工大学 | Automatic power-off protection device for overheat and charger of electric bicycle battery |
| CN115603010A (en) * | 2022-11-28 | 2023-01-13 | 惠州市纬世新能源有限公司（Cn） | Lithium battery cell with built-in short-circuit protection structure |
| CN115603010B (en) * | 2022-11-28 | 2023-04-07 | 惠州市纬世新能源有限公司 | Lithium battery cell with built-in short-circuit protection structure |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |