CN211826389U - Electric vehicle battery power calculating device and electric vehicle capable of preventing battery power from being over-discharged - Google Patents
Electric vehicle battery power calculating device and electric vehicle capable of preventing battery power from being over-discharged Download PDFInfo
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- CN211826389U CN211826389U CN201922160660.7U CN201922160660U CN211826389U CN 211826389 U CN211826389 U CN 211826389U CN 201922160660 U CN201922160660 U CN 201922160660U CN 211826389 U CN211826389 U CN 211826389U
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Abstract
The utility model relates to an electric vehicle battery electric quantity calculating device, which is used for calculating the electric quantity of a lead storage battery and comprises a shell and a circuit board; the circuit board is connected with a battery connecting wire, a motor connecting wire, a power supply connecting wire and an electric quantity data wire; a battery connecting wire electrically connected to the negative terminal of the electric vehicle lead storage battery; a motor connecting wire electrically connected to a negative terminal of an input power source of the traveling motor; the power supply connecting wire is electrically connected to the positive terminal of the input power supply of the electric vehicle control circuit; the electric quantity data line is electrically connected to the electric quantity data input end of the electric vehicle control circuit; a coulometer circuit is connected between the motor connecting line and the battery connecting line and arranged on the circuit board. The electric vehicle battery electric quantity calculating device can conveniently connect the lead storage battery of the electric vehicle with the traveling motor, can output electric quantity data, and has the advantage of compact structure. The application provides an electric motor car that prevents battery power overdischarge in addition.
Description
Technical Field
The utility model relates to a detection technology of electric motor car battery power specifically, relates to an electric motor car battery power calculating device and prevent the electric motor car of battery power overdischarge.
Background
The electric vehicle is a common tool for riding instead of walking. The existing electric vehicle is usually powered by a lithium battery, and a system formed by connecting the lithium battery with parts such as an electric vehicle walking motor and the like is mature. Besides a lithium battery, a lead storage battery is another power supply device for an electric vehicle, how to conveniently connect the lead storage battery with parts such as a traveling motor of the electric vehicle and synchronously calculate the electric quantity of the lead storage battery is one of the research and development points of the electric vehicle adopting the lead storage battery. In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric motor car battery power calculating device, it can be at the lead accumulator and the walking motor of connecting the electric motor car to calculate lead accumulator's electric quantity.
In order to solve the technical problem, the utility model provides an electric vehicle battery power calculating device, which is used for calculating the power of a lead storage battery and comprises a shell and a circuit board arranged in the shell; the circuit board is connected with a battery connecting wire, a motor connecting wire, a power supply connecting wire and an electric quantity data wire which extend out of the shell; the battery connecting wire is electrically connected to the negative end of the lead storage battery of the electric vehicle; the motor connecting wire is electrically connected to the negative end of the input power supply of the electric vehicle walking motor; the power supply connecting wire is electrically connected to the positive terminal of the input power supply of the electric vehicle control circuit; the electric quantity data line is electrically connected to an electric quantity data input end of the electric vehicle control circuit; and a coulometer circuit for sampling and processing the current flowing between the motor connecting line and the battery connecting line to calculate the output electric quantity of the lead storage battery is connected between the motor connecting line and the battery connecting line, and the coulometer circuit is arranged on the circuit board.
Preferably, the circuit board is further provided with a signal connecting wire which is electrically connected with the output end of the signal detection sensor of the electric vehicle walking motor.
Preferably, the housing has at least three wire outlets, one of which is used for leading out a battery connecting wire, the other of which is used for leading out a motor connecting wire, and the other of which is used for leading out a power supply connecting wire, an electric quantity data wire and a signal connecting wire.
Preferably, the power connection line, the electric quantity data line and the outer end of the signal connection line are provided with a pluggable first coupler together.
Preferably, the outer end part of the motor connecting wire is provided with a pluggable second coupler.
Preferably, the outer end of the battery connecting wire is provided with a circular ring-shaped connecting terminal.
Preferably, the electric quantity data line also serves as a motor data line for outputting motor data information, the electric quantity data input end also serves as a motor data information input end, and the circuit board is provided with a communication module which is electrically connected with the motor data line and also used for sending the electric quantity information and the motor data information.
The application provides an electric motor car that prevents battery power overdischarge in addition, contains: the mobile terminal comprises a lead storage battery, a walking motor, a control circuit and a display device, wherein an electric quantity calculating device is connected between a negative end of the lead storage battery and a negative end of the walking motor, and the electric quantity calculating device is the battery electric quantity calculating device in any one of the above modes.
Preferably, the control circuit comprises a switch control device, a display control device, a battery control device and a motor control device, and the battery connecting wire is electrically connected to the positive terminal of one of the input power supplies.
Preferably, the control circuit includes a display control device, and the electric quantity data line is electrically connected to an electric quantity data input terminal of the display control device.
By adopting the technical scheme, the utility model discloses can gain following technological effect: the electric vehicle battery electric quantity calculating device can conveniently connect the lead storage battery of the electric vehicle with the traveling motor, can output electric quantity data, and has the advantage of compact structure.
Drawings
FIG. 1 is a diagram illustrating electrical relationships between modules of a prior art electric vehicle;
fig. 2 to 4 are schematic diagrams respectively illustrating an electric vehicle battery power calculating device according to a next embodiment from different viewing angles;
FIG. 5 is a diagram illustrating signal transmission between a battery level calculating device of an electric vehicle and a motor controller, a battery, an instrument module, and a remote communication device of the electric vehicle according to an embodiment;
FIG. 6 is an electrical diagram illustrating various portions of an electric vehicle according to an exemplary embodiment;
fig. 7 is an electrical relationship diagram of each part of an electric vehicle according to another embodiment.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
With reference to fig. 2 to 6, in an embodiment, the electric vehicle battery power calculating device of the present application includes: a shell 1, a battery connecting wire 2, a motor connecting wire 3, an electric quantity/motor data wire 4, a power connecting wire 5, a signal connecting wire 6, a circular connecting terminal 7, a second coupler 8, a first coupler 9 and a covering sleeve 10.
The battery connecting wire 2, the motor connecting wire 3, the electric quantity/motor data wire 4, the power connecting wire 5 and the signal connecting wire 6 extend out of the shell 1. The charge/motor data line 4 can be understood as: the electric quantity data line is also used as a motor data line for outputting motor data information. In an electric vehicle, the battery connection line 2 is electrically connected to the negative terminal of the lead storage battery of the electric vehicle. The motor connecting wire 3 is electrically connected with the negative end of the input power supply of the electric vehicle walking motor. The power connection line 5 is electrically connected to the positive terminal of the input power of the control circuit of the electric vehicle, the control circuit may include a switch control device, a display control device, a battery control device and a motor control device, and the battery connection line may be electrically connected to the positive terminal of one of the input power, for example, the positive terminal of the battery control device. The signal connecting wire 6 is electrically connected with the output end of a signal detection sensor of the electric vehicle walking motor so as to convey motor data information, and the motor data information comprises the rotating speed information of the walking motor. The electric quantity/motor data line 4 has the functions of outputting electric quantity information and motor data information of the walking motor, the electric quantity/motor data line 4 is electrically connected with an electric quantity/motor data input end on an electric vehicle control circuit, a display device connected to the control circuit can display the electric quantity, the rotating speed of the walking motor or the vehicle speed corresponding to the rotating speed of the walking motor, and the electric quantity/motor data input end is a part of the display control device. The electrical quantity/motor data input can be understood as: the electric quantity data input end is also used as the input end of the motor data information. The structure of the electric vehicle battery power calculating device of the present embodiment will be further explained below.
The housing 1 is a detachable mechanism, and a circuit board is accommodated in the housing. Referring to fig. 2 to 4, the housing 1 has three wire outlets, one of which is used to lead out the battery connection wire 2, the other is used to lead out the motor connection wire 3, and the other is used to lead out the power connection wire 5, the electric quantity/motor data wire 4 and the signal connection wire 6. The motor connection line 3 and the battery connection line 2 are located on different sides of the housing 1. As shown in fig. 6, in this embodiment, the circuit board has: coulometer circuitry, a processing module, and a charge/motor communication module. The coulometer circuit is connected between the motor connecting wire 3 and the battery connecting wire 2, and samples and processes current flowing between the motor connecting wire and the battery connecting wire to calculate the output electric quantity of the lead storage battery. The specific principle of the coulometer circuit for detecting the output electric quantity of the lead storage battery is as follows: the coulometer circuit comprises a sampling resistor connected in series between a motor connecting line and a battery connecting line, different voltage differences are generated when different currents flow through the sampling resistor, the coulometer circuit performs integral operation on the currents and time to obtain output electric quantity, the specific circuit structure adopted by the coulometer circuit is mature, the coulometer circuit is applied to the fields of mobile phone electric quantity detection and the like, and the coulometer circuit is not the main point of the application and is not repeated. The processing module is electrically connected with the coulometer circuit to control the coulometer circuit to calculate the battery power information. The electric quantity/motor communication module is electrically connected with the processing module, the signal connecting wire and the electric quantity data wire respectively so as to receive and output battery electric quantity information and motor data information. Referring to fig. 5, the battery power calculating device receives the motor data information transmitted by the motor controller and detects the battery power information of the battery. The battery power information and the motor data information can be output to a display device for displaying, and can also be transmitted to a wireless receiving end (such as a mobile phone capable of performing remote data communication with the electric vehicle) by the electric vehicle remote communication device. The display device is generally disposed at the front side of the electric vehicle.
The battery connecting wire 2, the power connecting wire 5 and the motor connecting wire 3 are respectively and electrically connected to the coulometer circuit. The coulometer circuit may comprise: the device comprises a voltage acquisition circuit, a current acquisition circuit, a temperature acquisition circuit and an electric quantity calculation circuit. The circuit can adopt the existing circuit scheme, and the details are not repeated. The voltage acquisition circuit acquires the information of the voltage of the lead storage battery, the processing module comprises an internal power supply and a protection control circuit, the protection control circuit can be a common overvoltage protection circuit, and the processing module can control the coulometer circuit to stop working when the voltage of the battery is judged to be smaller than the preset voltage through the overvoltage protection circuit. The electric quantity/motor communication module comprises: the data receiving circuit receives battery power information and motor data information, and the data packaging circuit arranges the two information in sequence and sends the two information through the data sending circuit.
The electric quantity/motor communication module has the functions of sending battery electric quantity information and motor data information, and is beneficial to reducing connecting wires of the electric vehicle. Specifically, referring to fig. 1, in order to display the motor data information and the battery power information of the electric vehicle, a signal detection sensor of the electric vehicle traveling motor is connected to a display device of the electric vehicle via a motor signal line and a motor communication module, and the display device receives the motor data information and can correspondingly display the motor data information and the battery power information as the vehicle speed information of the electric vehicle. Correspondingly, the battery of the electric vehicle is connected with the display device through the electric quantity calculating module and the electric quantity communication module, and the display device receives the electric quantity information of the battery and can correspondingly display the information. The existing electric vehicle needs multiple groups of electric connecting wires for conveying motor data information and battery electric quantity information to a display device, and the electric connecting wires are complicated in distribution and inconvenient to assemble and overhaul. In the embodiment, the motor data information can be firstly transmitted to the electric vehicle battery electric quantity calculating device, and then the battery electric quantity information and the motor data information can be output together, so that the reduction of the connecting wires of the electric vehicle is facilitated.
In the present embodiment, the outer end portion of the battery connection wire 2 is provided with a circular ring-shaped connection terminal 7.
The outer end part of the motor connecting wire 3 is provided with a second coupler 8 which can be plugged. In this embodiment, the second coupler 8 includes: a plug-in part 8A, two guide blocks 8B and two limiting parts 8C. The plug-in part 8A has a cuboid plug-in cavity S, and the extension section of the motor connecting wire 3 extending out of the housing 1 has a plug-in terminal 3A located in the plug-in cavity S. The plug terminal 3A has a flat structure. The two guide blocks 8B are positioned on the outer wall of the insertion part 8A, the two guide blocks 8B can be in sliding fit with the linear guide groove, and the linear guide groove can be arranged on the walking motor. Two strip-shaped guide grooves 8D are limited by the two limiting parts 8C, the strip-shaped guide grooves 8D can be matched with the strip-shaped guide rails, and the strip-shaped guide rails can be arranged on the walking motor.
The outer end parts of the power supply connecting wire 5, the electric quantity/motor data wire 4 and the signal connecting wire 6 are provided with a pluggable first coupler 9. The first coupler 9 has three coupling ends, and the extension sections of the electric quantity/motor data line 4, the power connection line 5 and the signal connection line 6 extending from the shell 1 are respectively butted with the three coupling ends. In this embodiment, the first coupler 9 has three insertion holes 9A, the three insertion holes 9A are distributed in a straight line, and the three coupling ends are electric conductors (not shown) respectively disposed in the three insertion holes 9A.
The electric quantity/motor data line 4, the power supply connecting line 5 and the signal connecting line 6 are coated in the coating sleeve 10 from the extending sections of the shell 1. The covering sleeve 10 is made of soft material, and not only protects the electric quantity/motor data line 4, the power connection line 5 and the signal connection line 6, but also simultaneously plays a role in restraining the electric quantity/motor data line 4, the power connection line 5 and the signal connection line 6, and prevents the dispersion of the three.
In the second embodiment, the electric quantity calculating device may not be integrated with the signal connection line (the electric vehicle may be additionally provided with a signal connection line), the processing module is connected with the electric quantity data input end of the control circuit through the electric quantity communication module, the electric quantity data line and the first coupler, and the electric quantity data input end is a part of a display control device (not shown) of the control circuit. In the second embodiment, the electric quantity data line does not double as the motor data line. The features of the second embodiment not mentioned above can be the same as those of the previous embodiment, and are not described again. In other embodiments, the combination of the coupler and the connection terminal can be adjusted, and the details are not repeated.
The application provides an electric motor car that prevents battery power overdischarge in addition, contains: the mobile terminal comprises a lead storage battery, a walking motor, a control circuit and a display device, wherein an electric quantity calculating device is connected between a negative end of the lead storage battery and a negative end of the walking motor, and the electric quantity calculating device is the battery electric quantity calculating device in any one of the embodiments. The control circuit can comprise a switch control device, a display control device, a battery control device and a motor control device, and the battery connecting wire can be electrically connected with the positive terminal of one of the input power supplies.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The electric vehicle battery electric quantity calculating device is used for calculating the electric quantity of a lead storage battery and comprises a shell (1) and a circuit board arranged in the shell (1); the circuit board is characterized in that a battery connecting wire, a motor connecting wire, a power supply connecting wire and an electric quantity data wire (4) which extend out of the shell are connected to the circuit board;
the battery connecting wire (2) is electrically connected to the negative end of the lead storage battery of the electric vehicle;
the motor connecting wire (3) is electrically connected to the negative end of the input power supply of the electric vehicle walking motor;
the power supply connecting wire (5) is electrically connected to the positive end of the input power supply of the electric vehicle control circuit;
the electric quantity data line (4) is electrically connected to an electric quantity data input end of the electric vehicle control circuit;
and a coulometer circuit which is used for sampling and processing the current flowing between the motor connecting wire (3) and the battery connecting wire (2) to calculate the output electric quantity of the lead storage battery is connected between the motor connecting wire and the battery connecting wire, and the coulometer circuit is arranged on the circuit board.
2. The device for calculating the electric quantity of the battery of the electric vehicle as claimed in claim 1, wherein a signal connecting wire (6) is further arranged on the circuit board and is electrically connected with the output end of a signal detection sensor of a traveling motor of the electric vehicle.
3. The device for calculating the battery level of an electric vehicle according to claim 2, characterized in that the housing (1) has at least three wire outlets, one of which is used for leading out the battery connection wire (2), the other is used for leading out the motor connection wire (3), and the other is used for leading out the power connection wire (5), the power data wire (4) and the signal connection wire (6).
4. The device for calculating the battery power of an electric vehicle according to claim 2, characterized in that the outer ends of the power connection line (5), the power data line (4) and the signal connection line (6) are provided with a pluggable first coupler (9).
5. The device for calculating the battery level of an electric vehicle according to claim 4, characterized in that the outer end of the motor connection line (3) is provided with a second, pluggable coupler (8).
6. The electric vehicle battery power calculating device according to claim 4, wherein the outer end of the battery connecting wire (2) is provided with a circular ring-shaped connecting terminal (7).
7. The device for calculating the battery power of an electric vehicle according to claim 2, wherein the power data line doubles as a motor data line for outputting motor data information, the power data input end doubles as a motor data information input end, and the circuit board is provided with a communication module electrically connected with the motor data line and sending the power information and the motor data information.
8. An electric vehicle for preventing over-discharge of battery power, comprising: the lead storage battery, the walking motor, the control circuit and the display device are characterized in that an electric quantity calculating device is connected between the negative end of the lead storage battery and the negative end of the walking motor, and the electric quantity calculating device is the battery electric quantity calculating device according to any one of claims 1 to 7.
9. The electric vehicle of claim 8, wherein the control circuit comprises a switch control device, a display control device, a battery control device and a motor control device, and the battery connection line is electrically connected to a positive terminal of one of the input power sources.
10. The electric vehicle of claim 8, wherein the control circuit comprises a display control device, and the charge data line is electrically connected to a charge data input of the display control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922160660.7U CN211826389U (en) | 2019-12-05 | 2019-12-05 | Electric vehicle battery power calculating device and electric vehicle capable of preventing battery power from being over-discharged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922160660.7U CN211826389U (en) | 2019-12-05 | 2019-12-05 | Electric vehicle battery power calculating device and electric vehicle capable of preventing battery power from being over-discharged |
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| Publication Number | Publication Date |
|---|---|
| CN211826389U true CN211826389U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922160660.7U Active CN211826389U (en) | 2019-12-05 | 2019-12-05 | Electric vehicle battery power calculating device and electric vehicle capable of preventing battery power from being over-discharged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211826389U (en) |
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- 2019-12-05 CN CN201922160660.7U patent/CN211826389U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jinhua Qianqi Technology Co.,Ltd. Assignor: ZHEJIANG JINKAI INTERNET OF THINGS TECHNOLOGY CO.,LTD. Contract record no.: X2023330000468 Denomination of utility model: An electric vehicle battery power calculation device and an electric vehicle for preventing excessive battery discharge Granted publication date: 20201030 License type: Common License Record date: 20230802 |
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| EE01 | Entry into force of recordation of patent licensing contract |