CN213482415U - Battery power detection device and vehicle - Google Patents
Battery power detection device and vehicle Download PDFInfo
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- CN213482415U CN213482415U CN202021784270.3U CN202021784270U CN213482415U CN 213482415 U CN213482415 U CN 213482415U CN 202021784270 U CN202021784270 U CN 202021784270U CN 213482415 U CN213482415 U CN 213482415U
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Abstract
The disclosure relates to a battery electric quantity detection device and a vehicle, which are used for dynamically and flexibly detecting and calculating battery electric quantities of different systems or products and improving the development efficiency of the products. The device comprises a power supply module, a following voltage module, an electric signal sampling module and a processor; the power supply module is used for providing a working power supply, the electric signal sampling module comprises an adjustable sampling resistor and a following voltage module, the adjustable sampling resistor is used for dynamically adjusting the data size of electric signals at two ends of the sampling resistor, and the following voltage module is used for outputting following voltage; the power supply module is connected with the electric signal sampling module; the electric signal sampling module is connected with the processor and is used for transmitting electric signal data to the processor; the following voltage module is connected with the electric signal sampling module and used for transmitting the following voltage to the electric signal sampling module, the following voltage module is further connected with the processor, and the processor is used for monitoring the following voltage and analyzing and calculating the electric quantity of the battery according to the received electric signal data and the following voltage.
Description
Technical Field
The present disclosure relates to a battery management technology, and in particular, to a battery power detection apparatus and a vehicle.
Background
With the rapid development of various electronic products, the types of finished batteries are also continuously updated, and the electronic products cannot normally operate due to the insufficient electric quantity of the batteries, so that the battery management system is adopted to detect and display the residual electric quantity of the batteries to form an indispensable function. However, in the prior art, after the charging and discharging current interval of the power supply battery in the product or system is set, the parameters of the related devices in the power detection function module are also set to fixed values, which cannot be easily modified, is not conducive to the rapid update and development of the product, and results in low product development efficiency.
SUMMERY OF THE UTILITY MODEL
The purpose of the disclosure is to provide a battery power detection device and a vehicle, which are used for dynamically and flexibly detecting and calculating battery powers of different systems or products, and improving the development efficiency of the products.
In order to achieve the above object, a first aspect of the present disclosure provides a battery level detection apparatus, which includes a power supply module, a follow-up voltage module, an electrical signal sampling module, and a processor;
the power supply module is used for providing a working power supply, the electric signal sampling module comprises an adjustable sampling resistor, the adjustable sampling resistor is used for dynamically adjusting the data size of electric signals at two ends of the sampling resistor, and the following voltage module is used for outputting following voltage;
the power supply module is connected with the electric signal sampling module;
the electric signal sampling module is connected with the processor and is used for transmitting the acquired electric signal data to the processor;
the following voltage module is connected with the electric signal sampling module and used for transmitting the following voltage to the electric signal sampling module, the following voltage module is further connected with the processor, and the processor is used for monitoring the following voltage output by the following voltage module and analyzing and calculating the electric quantity of the battery according to the received electric signal data and the following voltage.
Optionally, the electrical signal sampling module further includes a first operational amplifier, and the first operational amplifier is connected to the following voltage module, so as to input the following voltage output by the following voltage module into the first operational amplifier;
the first operational amplifier is connected with the adjustable sampling resistor, the adjustable sampling resistor is connected with the power module, the first operational amplifier is connected with the processor, and the first operational amplifier is used for carrying out operational amplification on electric signal data at two ends of the adjustable sampling resistor and the following voltage and then transmitting the electric signal data to the processor.
Optionally, the following voltage module includes an adjustable voltage-dividing resistor and a second operational amplifier, an adjustable end of the adjustable voltage-dividing resistor is connected to an input end of the second operational amplifier, and is configured to input voltages at two ends of the adjustable voltage-dividing resistor to the second operational amplifier, and an output end of the second operational amplifier is connected to an input end of the first operational amplifier, so as to input the following voltage output by the second operational amplifier to the first operational amplifier.
Optionally, the voltage following module further includes a voltage calibrator, configured to measure a no-load voltage, where one end of the voltage calibrator is connected to the output end of the second operational amplifier, and the other end of the voltage calibrator is connected to the processor, so as to send the no-load voltage information to the processor.
Optionally, the processor comprises an analog-to-digital converter for converting the electrical signal data into a digital signal.
Optionally, the adjustable sampling resistor is an adjustable current sampling resistor or an adjustable voltage sampling resistor.
Optionally, the first handler is a proportional handler.
Optionally, the second op-amp is a follower.
A second aspect of the present disclosure provides a vehicle including the battery charge amount detection device provided in the first aspect of the embodiment of the present disclosure.
According to the technical scheme, the battery electric quantity detection device comprises a power supply module, a following voltage module, an electric signal sampling module and a processor, wherein the power supply module is connected with the electric signal sampling module, the electric signal sampling module is connected with the processor and used for transmitting collected electric signal data to the processor, and the following voltage module is respectively connected with the electric signal sampling module and the processor. The electric signal sampling module comprises an adjustable sampling resistor, and the electric quantity value corresponding to unit voltage can be adjusted in a self-adaptive mode by adjusting the resistance value of the adjustable sampling resistor, so that the detection requirements of battery parameters of different systems or products are met. Furthermore, the electric signal data acquired by the electric signal acquisition module and the following voltage output by the following voltage module are analyzed and processed by the processor, so that the battery parameters such as the battery electric quantity, the thermal power and the like of different systems or products can be dynamically and flexibly detected and calculated, and the development efficiency of the products is improved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a block diagram illustrating a battery charge level detection apparatus according to an exemplary embodiment;
fig. 2 is a block diagram illustrating a battery charge level detection apparatus according to another exemplary embodiment.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a block diagram illustrating a battery charge level detection apparatus 10 according to an exemplary embodiment, and as shown in fig. 1, the battery charge level detection apparatus 10 includes a power module 11, a follow voltage module 12, an electrical signal sampling module 13, and a processor 14. Wherein, power module 11 is used for providing working power, power module 11 is connected with signal of telecommunication sampling module 13, signal of telecommunication sampling module 13 is connected with treater 14, this signal of telecommunication sampling module 13 is used for transmitting the signal of telecommunication data of gathering to treater 14, follow voltage module 12 and signal of telecommunication sampling module 13 and be connected, this follow voltage module 12 is used for transmitting follow voltage to signal of telecommunication sampling module 13, follow voltage module 12 still is connected respectively with treater 14, treater 14 is used for monitoring the follow voltage of following voltage module 12 output, and carry out analysis and calculation to battery electric quantity according to received signal of telecommunication data and follow voltage.
For example, in practical applications, the power source of the electric vehicle is a battery, and in order to ensure safe, stable and normal operation of the electric vehicle, the battery needs to be controlled and managed to maintain good performance and prolong the service life. In this way, the power module 11 may be a battery of the detected electric vehicle, and the battery power detection apparatus 10 provided by the embodiment of the disclosure may detect the battery power of the electric vehicle.
Specifically, the electrical signal sampling module 13 includes an adjustable sampling resistor 131, and the adjustable sampling resistor 131 may be an adjustable current sampling resistor or an adjustable voltage sampling resistor, which may implement dynamic adjustment of the data size of the electrical signal at both ends of the sampling resistor. When the adjustable sampling resistor 131 is an adjustable current sampling resistor, the electrical signal data that can be acquired by the electrical signal sampling module 13 is current data flowing into or out of the adjustable current sampling resistor; when the adjustable sampling resistor 13 is an adjustable voltage sampling resistor, the electrical signal data which can be acquired by the electrical signal sampling module 13 is voltage data at two ends of the adjustable voltage sampling resistor, then the voltage data of the following voltage module 12 is determined, and the electrical signal data and the voltage data of the following voltage module 12 are transmitted to the processor 14 for operation processing, so that the electrical quantity value of the power module 11 can be obtained.
It should be noted that the electric quantity value corresponding to the unit voltage can be adaptively adjusted by adjusting the resistance value of the adjustable sampling resistor 131, so as to adapt to the detection requirements of the battery parameters of different systems or products. The battery parameters comprise any one of related parameters such as electric quantity detection sensitivity, thermal power and current detection range. For example, by using the battery capacity detection sensitivity of the product as a demand index, the adjustable sampling resistor 131 supports the adjustable shift R1, R2, and R3, wherein the resistance value relationship is R1< R2< R3, the battery supply voltage of the product is U, and under the same discharge current I, because R1< R2< R3, when the resistance value of the adjustable sampling resistor 131 is R3, the discharge voltage at two ends of the adjustable sampling resistor 131 is greater than the discharge voltage at two ends of the adjustable sampling resistor 131 when the resistance value of the adjustable sampling resistor 131 is R1, and then the electric signal sampling module 13 performs data noise reduction, scaling and other operations, so that the capacity detection sensitivity when the resistance value of the adjustable sampling resistor 131 is R3 is higher than the capacity detection sensitivity when the resistance value of the adjustable sampling resistor 131 is R1. Therefore, when the battery level detection sensitivity of the product is required to be high, the resistance value of the adjustable sampling resistor 131 may be adjusted to R3. Similarly, when the system needs a larger current detection range, since the resistance value relationship is R1< R2< R3, the resistance value of the adjustable sampling resistor 131 can be adjusted to R1 under the same detection voltage according to U-IR.
By adopting the device, the electric signal sampling module comprises the adjustable sampling resistor, and the electric quantity value corresponding to the unit voltage can be adaptively adjusted by adjusting the resistance value of the adjustable sampling resistor, so that the detection requirements of battery parameters of different systems or products are met. Furthermore, the electric signal data acquired by the electric signal acquisition module and the following voltage output by the following voltage module are analyzed and processed by the processor, so that the battery parameters such as the battery electric quantity, the thermal power and the like of different systems or products can be dynamically and flexibly detected and calculated, and the development efficiency of the products is improved.
Fig. 2 is a block diagram of a battery power level detecting device 10 according to another exemplary embodiment, as shown in fig. 2, an adjustable sampling resistor 131 is connected to the power module 11, based on the above embodiment, the electrical signal sampling module 13 further includes a first operational amplifier 132, a first input end of the first operational amplifier 132 is connected to the follow voltage module 12 to input the follow voltage output by the follow voltage module 12, a second input end of the first operational amplifier 132 is connected to the adjustable sampling resistor 131, an output end of the first operational amplifier is connected to the processor 14, and the first operational amplifier is configured to perform operational amplification processing on electrical signal data at two ends of the adjustable sampling resistor 131 and the follow voltage and then transmit the electrical signal data to the processor 14. For example, the first operational amplifier 132 is a proportional operational amplifier, and is configured to amplify the sampled electrical signal at two ends of the adjustable sampling resistor 131, and the amplified electrical signal data is transmitted to the processor 14.
In the embodiment of the present disclosure, the follow voltage module 12 includes an adjustable voltage dividing resistor 121 and a second operational amplifier 122, an adjustable end of the adjustable voltage dividing resistor 121 is connected to an input end of the second operational amplifier 122, and is configured to input a voltage across the adjustable voltage dividing resistor 121 to the second operational amplifier 122, and an output end of the second operational amplifier 122 is connected to an input end of the first operational amplifier 132, so as to input the follow voltage output by the second operational amplifier 122 to the first operational amplifier 132. That is, the voltage at the output terminal of the second opamp 122 is input as the fixed voltage terminal of the first opamp 132. For example, the second operational amplifier 122 is a follower, and the dynamic adjustment of the no-load voltage of the following voltage module 12 can be realized by adjusting the resistance value of the adjustable voltage dividing resistor 121, where the no-load voltage is the accurate voltage value corresponding to the system in the no-load and 0-current state. In addition, the following voltage of the following voltage module 12 can be changed between zero and full voltage by adjusting the resistance value of the adjustable voltage-dividing resistor 121, and when the discharging current interval of the system is larger and the charging current interval is smaller, the following voltage can be adjusted to enable the system to leave more detection margin for the discharging current and less detection margin for the charging current within the range of zero and full voltage; similarly, when the system discharge current interval is smaller and the charging current interval is larger, the follow voltage can be adjusted to enable the system to leave less detection margin for the discharge current and more detection margin for the charging current in the zero and full voltage ranges. Therefore, the device can be applied to systems with different charging and discharging current sizes by adjusting the resistance value of the adjustable divider resistor 121.
In a possible embodiment, the follower voltage module 12 further includes a voltage calibrator 123 for measuring the no-load voltage, one end of the voltage calibrator 123 is connected to the output terminal of the second opamp 122, and the other end of the voltage calibrator 123 is connected to the processor 14 to send no-load voltage information to the processor 14. The processor 14 includes an analog-to-digital converter ADC 141, which is configured to convert the electrical signal data amplified by the proportional amplifier into a digital signal, the analog-to-digital converter ADC 141 may further calculate a difference between the no-load voltage and a voltage corresponding to the electrical signal data, and convert the difference into the digital signal, and the processor 14 calculates the charge and discharge capacity of the battery according to the digital signal.
In summary, the battery power detection apparatus provided by the embodiment of the present disclosure includes an adjustable sampling resistor connected to the first operational amplifier, and an adjustable voltage dividing resistor connected to the second operational amplifier, and by using the connection structure, the dynamic adjustment of the critical voltage value input by the second operational amplifier and the adaptive adjustment of the power value corresponding to the unit voltage can be realized, so that the apparatus can be applied to the development and debugging of battery products with different functional requirements; meanwhile, the device also comprises a voltage calibrator which is used for monitoring the no-load voltage, calibrating the voltage corresponding to the electric signal data collected by the electric signal sampling module according to the no-load voltage, and calculating the electric quantity of the battery according to the data, so that the accuracy of detecting the electric quantity of the battery can be improved.
The present disclosure also provides a vehicle including the battery power detection apparatus provided in any of the above embodiments.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (9)
1. The device for detecting the electric quantity of the battery is characterized by comprising a power supply module, a following voltage module, an electric signal sampling module and a processor;
the power supply module is used for providing a working power supply, the electric signal sampling module comprises an adjustable sampling resistor, the adjustable sampling resistor is used for dynamically adjusting the data size of electric signals at two ends of the sampling resistor, and the following voltage module is used for outputting following voltage;
the power supply module is connected with the electric signal sampling module;
the electric signal sampling module is connected with the processor and is used for transmitting the acquired electric signal data to the processor;
the following voltage module is connected with the electric signal sampling module and used for transmitting the following voltage to the electric signal sampling module, the following voltage module is further connected with the processor, and the processor is used for monitoring the following voltage output by the following voltage module and analyzing and calculating the electric quantity of the battery according to the received electric signal data and the following voltage.
2. The device according to claim 1, wherein the electrical signal sampling module further comprises a first operational amplifier, and the first operational amplifier is connected with the following voltage module so as to input the following voltage output by the following voltage module into the first operational amplifier;
the first operational amplifier is connected with the adjustable sampling resistor, the adjustable sampling resistor is connected with the power module, the first operational amplifier is connected with the processor, and the first operational amplifier is used for carrying out operational amplification on electric signal data at two ends of the adjustable sampling resistor and the following voltage and then transmitting the electric signal data to the processor.
3. The device according to claim 2, wherein the follow voltage module comprises an adjustable voltage dividing resistor and a second operational amplifier, an adjustable end of the adjustable voltage dividing resistor is connected with an input end of the second operational amplifier and is used for inputting the voltage at two ends of the adjustable voltage dividing resistor into the second operational amplifier, and an output end of the second operational amplifier is connected with an input end of the first operational amplifier so as to input the follow voltage output by the second operational amplifier into the first operational amplifier.
4. The apparatus of claim 3, wherein the follow voltage module further comprises a voltage calibrator for measuring a no-load voltage, one end of the voltage calibrator is connected to the output terminal of the second op amp, and the other end of the voltage calibrator is connected to the processor to send the no-load voltage information to the processor.
5. The apparatus of any one of claims 1 to 4, wherein the processor comprises an analog-to-digital converter for converting the electrical signal data to a digital signal.
6. The apparatus of any one of claims 1 to 4, wherein the adjustable sampling resistor is an adjustable current sampling resistor or an adjustable voltage sampling resistor.
7. The apparatus according to any one of claims 2 to 4, wherein the first handler is a proportional handler.
8. The apparatus of claim 3 or 4, wherein the second handler is a follower.
9. A vehicle characterized by comprising the battery charge level detection apparatus of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021784270.3U CN213482415U (en) | 2020-08-21 | 2020-08-21 | Battery power detection device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021784270.3U CN213482415U (en) | 2020-08-21 | 2020-08-21 | Battery power detection device and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN213482415U true CN213482415U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021784270.3U Active CN213482415U (en) | 2020-08-21 | 2020-08-21 | Battery power detection device and vehicle |
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|---|---|
| CN (1) | CN213482415U (en) |
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2020
- 2020-08-21 CN CN202021784270.3U patent/CN213482415U/en active Active
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Effective date of registration: 20231031 Address after: 710119 No. 2 Yadi Road, New Industrial Park, High tech Zone, Xi'an City, Shaanxi Province Patentee after: Xi'an BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: BYD Semiconductor Co.,Ltd. Patentee before: Guangdong BYD Energy Saving Technology Co.,Ltd. |