CN217969258U - High-temperature overcharge-preventing device of electric vehicle - Google Patents
High-temperature overcharge-preventing device of electric vehicle Download PDFInfo
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- CN217969258U CN217969258U CN202222482575.4U CN202222482575U CN217969258U CN 217969258 U CN217969258 U CN 217969258U CN 202222482575 U CN202222482575 U CN 202222482575U CN 217969258 U CN217969258 U CN 217969258U
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- 238000001514 detection method Methods 0.000 claims abstract description 52
- 230000002265 prevention Effects 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 230000002269 spontaneous effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model discloses a high temperature overcharge prevention device of an electric vehicle, which comprises a charging head and a battery pack, wherein the charging head comprises a joint and a first cable connected with the joint, a first temperature detection device is arranged between the first cable and the joint, the battery comprises a main body and a slot connected with the battery pack, and a second temperature detection device is arranged between the main body and the slot; the slot is connected with the joint. By arranging two mutually independent temperature detection devices, when the temperature of one end of a charging head or a battery pack is too high, the corresponding current can be cut off at any time, so that the high temperature caused by continuous charging is avoided, the problem of local temperature rise is effectively reduced, the battery pack is effectively protected, and the coefficient of spontaneous combustion is also reduced; wherein first temperature-detecting device and second temperature-detecting device can be for dismantling the structure to convenient the change has avoided the excess temperature to exceed predetermined threshold value, reduces the precision.
Description
Technical Field
The utility model relates to an electric bicycle charging device field, in particular to high temperature overcharge prevention device of electric motor car.
Background
Electric bicycle, it uses torque sensor as the core to mean to have integrated on the basis of ordinary bicycle, is equipped with the novel vehicle of "triple sensing system" that pedal frequently sensor, speedtransmitter combination formed, sensor system can accurate perception ride passerby's the power of tramping, pedal frequently and the vehicle speed of traveling at the in-process of riding to handle triple data through the algorithm, final control motor output accords with the power that passerby required, let the process of riding become light laborsaving.
However, the problem of spontaneous combustion due to high temperature during charging sometimes occurs in the conventional electric vehicle, which is mainly caused by temperature rise due to excessive contact resistance or poor contact of the interface during the rapid charging process of the battery pack and the charging head, and the temperature rise may also occur due to overload, abnormality and the like during some charging processes. The existing charging head is generally provided with a charging overload protection device, so that when a battery pack is charged to a preset value, the current is cut off, but the protection cannot deal with some abnormal conditions.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric motor car prevent high temperature overcharge device, aim at improving current protection mechanism, reduce the high temperature spontaneous combustion problem that appears in the charging process, improve the safety of charging, reduce the injury to personnel.
In order to achieve the above objects, the utility model provides an electric vehicle prevent high temperature overcharge device, include:
the charging head comprises a joint and a first cable connected with the joint, a first temperature detection device is arranged between the first cable and the joint and can detect a first temperature value of the joint and/or the first cable, and when the first temperature value exceeds a preset value, the first temperature detection device cuts off current between the joint and the first cable;
the battery pack comprises a main body and a slot connected with the battery pack, a second temperature detection device is arranged between the main body and the slot and can detect a second temperature value of the main body and/or the slot, and when the second temperature value exceeds a preset value, the second temperature detection device cuts off the current between the battery pack and the slot;
the slot is connected with the joint.
Preferably, the first temperature detection device and the second temperature detection device are detachably mounted to the charging head and the battery pack, respectively.
Preferably, the first temperature detection device and the second temperature detection device are thermistors.
Preferably, the first temperature detection device and the second temperature detection device have the same structure and comprise a PCB, a single chip microcomputer arranged on the PCB and a temperature sensor arranged on the PCB, and when the temperature sensor is higher than a predetermined threshold value, the single chip microcomputer controls whether the circuit of the charging head or the battery pack is cut off or not.
Preferably, the first temperature detection device may be connected to the second temperature detection device through a bridge circuit.
Preferably, the first temperature detection device is provided with a main control device, and the main control device is connected with the second temperature detection device.
Preferably, at least one of the first temperature detection device and the second temperature detection device is provided.
According to the technical scheme of the utility model, by arranging two mutually independent temperature detection devices, when the temperature of one end of a charging head or a battery pack is too high, the corresponding current can be cut off at any time, so that the high temperature caused by continuous charging is avoided, the problem of local temperature rise is effectively reduced, the battery pack is effectively protected, and the coefficient of spontaneous combustion is also reduced; wherein first temperature-detecting device and second temperature-detecting device can be for dismantling the structure to convenient the change has avoided the excess temperature to exceed predetermined threshold value, reduces the precision.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic diagram of the main control device, the first temperature detection device and the second temperature detection device.
In the drawing, 1 is a charging head, 11 is a connector, 12 is a first cable, 2 is a battery pack, 21 is a main body, 22 is a slot, 31 is a first temperature detection device, 32 is a second temperature detection device, 4 is a bridge circuit, and 5 is a main control device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial \8230 \ 8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship, motion condition, etc. of the components at a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first" or "second" etc. in the embodiments of the present invention, the description of "first" or "second" etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 2, a high temperature overcharge preventing device for an electric vehicle includes:
the charging head 1 comprises a connector 11 and a first cable 12 connected with the connector 11, a first temperature detection device 31 is arranged between the first cable 12 and the connector 11, the first temperature detection device 31 can detect a first temperature value of the connector 11 and/or the first cable 12, and when the first temperature value exceeds a preset value, the first temperature detection device 31 cuts off the current between the connector 11 and the first cable 12;
the battery pack 2 comprises a main body 21 and a slot 22 connected with the battery pack 2, a second temperature detection device 32 is arranged between the main body 21 and the slot 22, the second temperature detection device 32 can detect a second temperature value of the main body 21 and/or the slot 22, and when the second temperature value exceeds a preset value, the second temperature detection device 32 cuts off the current between the battery pack 2 and the slot 22;
the socket 22 is connected to the connector 11.
By arranging two mutually independent temperature detection devices, when the temperature of one end of the charging head 1 or the battery pack 2 is too high, the corresponding current can be cut off at any time, so that the high temperature caused by continuous charging is avoided, the problem of local temperature rise is effectively reduced, the battery pack 2 is effectively protected, and the coefficient of spontaneous combustion is also reduced; wherein, the first temperature detecting device 31 and the second temperature detecting device 32 can be of a detachable structure, thereby being convenient to replace, avoiding the over-temperature exceeding the predetermined threshold value and reducing the precision.
The embodiment of the utility model provides an in, first temperature-detecting device 31 and second temperature-detecting device 32 respectively demountable installation are in first 1 and the battery package 2 that charges, through setting up detection device into the modularization to can improve market promotion's prevalence, reduce current market risk.
Specifically, the first temperature detection device 31 and the second temperature detection device 32 are thermistors. The thermistor measures absolute temperature on two lines, has better precision, but is more expensive than a thermocouple, and the measurable temperature range is smaller than the thermocouple. One commonly used thermistor has a resistance of 5k Ω at 25 ℃, resulting in a resistance change of 200 Ω per 1 ℃ temperature change. Note that a lead resistance of 10 omega causes only a negligible error of 0.05 c. It is well suited for current control applications where rapid and sensitive temperature measurements are required. The response to the current cut-off or not can be extremely fast.
More specifically, the first temperature detecting device 31 and the second temperature detecting device 32 have the same structure, and include a PCB, a single chip microcomputer disposed on the PCB, and a temperature sensor disposed on the PCB, wherein when the temperature sensor is higher than a predetermined threshold, the single chip microcomputer controls whether the circuit of the charging head 1 or the battery pack 2 is cut off. The circuit can be cut off by the circuit control or the temperature sensor.
In the embodiment of the present invention, the first temperature detecting device 31 may be connected to the second temperature detecting device 32 through the bridge circuit 4. In the application, also can set up main control device 5 at first 1 that charges, realize through main control device 5 that first temperature-detecting device 31 and second temperature-detecting device 32 only switch, realize accurate control, main control circuit can monitor two temperature sensor's temperature size promptly to the size of control corresponding electric current reduces the problem of overcharge when guaranteeing fast filling.
As shown in fig. 2, the first temperature detecting device 31 is provided with a main control device, and the main control device is connected with the second temperature detecting device 32.
Specifically, at least one of the first temperature detection device 31 and the second temperature detection device 32 is provided. A plurality of sensors can be arranged according to actual needs, so that multipoint monitoring is realized, accurate temperature control and current control are realized, and the risk of spontaneous combustion is effectively reduced.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (7)
1. The utility model provides a prevent high temperature overcharge device of electric motor car which characterized in that includes:
the charging head comprises a joint and a first cable connected with the joint, a first temperature detection device is arranged between the first cable and the joint and can detect a first temperature value of the joint and/or the first cable, and when the first temperature value exceeds a preset value, the first temperature detection device cuts off current between the joint and the first cable;
the battery pack comprises a main body and a slot connected with the battery pack, a second temperature detection device is arranged between the main body and the slot and can detect a second temperature value of the main body and/or the slot, and when the second temperature value exceeds a preset value, the second temperature detection device cuts off the current between the battery pack and the slot;
the slot is connected with the joint.
2. The high temperature overcharge prevention device of an electric vehicle according to claim 1, wherein: the first temperature detection device and the second temperature detection device are detachably mounted on the charging head and the battery pack respectively.
3. The high temperature overcharge prevention device of an electric vehicle according to claim 1, wherein: the first temperature detection device and the second temperature detection device are thermistors.
4. The high temperature overcharge prevention device for electric vehicles according to claim 1, wherein: the first temperature detection device and the second temperature detection device are identical in structure and comprise a PCB (printed Circuit Board), a single chip microcomputer arranged on the PCB and a temperature sensor arranged on the PCB, and when the temperature sensor is higher than a preset threshold value, the single chip microcomputer controls whether a circuit of a charging head or a battery pack is cut off or not.
5. The high temperature overcharge prevention device for electric vehicles according to claim 1, wherein: the first temperature detection device may be connected to the second temperature detection device through a bridge circuit.
6. The high temperature overcharge prevention device for electric vehicles according to claim 5, wherein: the first temperature detection device is provided with a main control device, and the main control device is connected with the second temperature detection device.
7. The high temperature overcharge prevention device of an electric vehicle according to claim 1, wherein: the first temperature detection device and the second temperature detection device are provided with at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222482575.4U CN217969258U (en) | 2022-09-19 | 2022-09-19 | High-temperature overcharge-preventing device of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222482575.4U CN217969258U (en) | 2022-09-19 | 2022-09-19 | High-temperature overcharge-preventing device of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217969258U true CN217969258U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222482575.4U Active CN217969258U (en) | 2022-09-19 | 2022-09-19 | High-temperature overcharge-preventing device of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217969258U (en) |
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2022
- 2022-09-19 CN CN202222482575.4U patent/CN217969258U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240419 Address after: 435000 Huangshi Economic and Technological Development Zone, Huangshi City, Hubei Province. Office 401, R&D Building B, No. 189 Jinshan Avenue, Tieshan District Patentee after: Hubei Golden Diamond Electronic Information Co.,Ltd. Country or region after: China Patentee after: Xi'an Jinze Barui Electronic Information Co.,Ltd. Patentee after: Xianyang Jinzuan Digital Co.,Ltd. Address before: No. 16, Linjiazhuang Road, Wangren Town, Tieshan District, Huangshi Economic and Technological Development Zone, Huangshi City, Hubei Province, 435000 Patentee before: Hubei Golden Diamond Electronic Information Co.,Ltd. Country or region before: China Patentee before: Guangdong Golden Diamond Semiconductor Technology Research Institute Co.,Ltd. Patentee before: Xianyang Jinzuan Digital Co.,Ltd. |
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| TR01 | Transfer of patent right |