CN112994178B - Self-adaptive charging method for Beidou positioning terminal - Google Patents
Self-adaptive charging method for Beidou positioning terminal Download PDFInfo
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- CN112994178B CN112994178B CN202110405274.9A CN202110405274A CN112994178B CN 112994178 B CN112994178 B CN 112994178B CN 202110405274 A CN202110405274 A CN 202110405274A CN 112994178 B CN112994178 B CN 112994178B
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- 238000007600 charging Methods 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims abstract description 23
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- 238000010586 diagram Methods 0.000 description 5
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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Abstract
The invention discloses a self-adaptive charging method of a Beidou positioning terminal, which relates to the technical field of terminal positioning and comprises a battery voltage detection module, a processing module, a charging control module and a memory, wherein the charging control module comprises charging I C, the processing module is used for precharging a battery, the battery voltage detection module is used for detecting the voltage of the battery, analyzing the data change of the battery voltage, calculating the battery capacity and storing the battery capacity in the memory, selecting a proper configuration resistance value for charging I C according to the battery capacity in a memory record, realizing the self-adaptive configuration of the battery charging current, and selecting a proper charging current value for the battery and charging according to the battery capacity through automatic detection of the matched battery capacity, so that the battery with various different specifications can be charged, the management and control difficulty is reduced, and the cost is effectively saved.
Description
Technical Field
The invention relates to the technical field of terminal positioning, in particular to a self-adaptive charging method of a Beidou positioning terminal.
Background
The current of the charging IC is basically configured by using a resistor. Since the charging current is determined by hardware (resistance), when the device is equipped with batteries of different capacities, different charging currents are required and various hardware versions are required. As users increase, the variety of demands of users for battery capacity also increases. Therefore, more and more hardware versions of the product are realized, the management and control are complex, and the cost is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the self-adaptive charging method of the Beidou positioning terminal can automatically detect the capacity of matched batteries and configure charging current for the batteries, so that the batteries with various specifications can be charged, and the production and management are convenient.
The technical scheme adopted for solving the technical problems is as follows:
The self-adaptive charging method of the Beidou positioning terminal is characterized by comprising a battery voltage detection module, a processing module, a charging control module and a memory, wherein the charging control module comprises a charging IC (integrated circuit), the processing module is used for precharging a battery, the battery voltage detection module is used for detecting the voltage of the battery, analyzing the data change of the battery voltage, calculating the battery capacity and storing the battery capacity in the memory, and selecting a proper configuration resistance value for the charging IC according to the battery capacity in the memory record so as to realize the self-adaptive configuration of the battery charging current.
As an improvement of the above technical solution, the precharge process checks whether the external power supply is in a charged state, and the external power supply is in a charged state, turns on the battery voltage detection module, and discharges the battery until the battery voltage is reduced to a constant voltage value, and charges the battery by maintaining the constant voltage value.
As a further improvement of the above technical solution, when the battery charging is started, the switch state and the charging current need to be selected according to the battery capacity stored in the memory.
As a further improvement of the technical scheme, the battery voltage detection module comprises a switch circuit and a voltage dividing circuit, wherein the switch circuit is electrically connected with the voltage dividing circuit, and the switch circuit is externally connected with a battery power supply;
when the battery voltage is required to be detected, the voltage dividing circuit and the battery power supply are connected by opening the switch circuit;
The voltage dividing circuit is provided with a port of the AD converter, and after the voltage division of the battery power supply is realized, the port of the AD converter obtains sampling voltages for matching with the AD converters with various specifications.
As a further improvement of the above technical solution, the switching circuit includes a first switch, a second switch and a pull-up resistor R1, where the first switch is a triode Q1, and the second switch is a field effect transistor Q2;
the base end of the triode Q1 is externally connected with a processing module, the emitter end is grounded, the collector end is connected with the grid electrode of the field effect tube Q2 and is connected to the source electrode of the Q2 through a pull-up resistor R1, and the drain end of the field effect tube Q2 is connected with a voltage dividing circuit.
As a further improvement of the technical scheme, the voltage dividing circuit comprises a voltage dividing resistor R2 and a voltage dividing resistor R3, one end of the voltage dividing resistor R2 is connected with the drain end of the field effect transistor Q2, the other end of the voltage dividing resistor R2 is grounded through the voltage dividing resistor R3, an AD port is arranged between the voltage dividing resistor R2 and the voltage dividing resistor R3 and is used for connecting various AD converters
As a further improvement of the above technical solution, the charging control module further includes a resistor network module or a digital potentiometer module;
The ISET pin of the charging IC is connected with a resistor network module, the VIN pin of the charging IC is externally connected with a power supply module, the VBAT pin of the charging IC is provided with a battery output end BAT2, the resistor network module is externally connected with a processing module, and the processing module is used for controlling the resistor network module to form a grounding resistor network and outputting charging current values with various specifications from the battery output end BAT2 of the charging IC;
Or an ISET pin of the charging IC is connected with the digital potentiometer module, a VIN pin of the charging IC is externally connected with the power module, a VBAT pin of the charging IC is provided with a battery output end BAT2, the digital potentiometer module is externally connected with the processing module, and the processing module is used for controlling the digital potentiometer module to enable the digital potentiometer module to be configured with a plurality of resistance values, so that the battery output end BAT2 of the charging IC outputs charging current values with various specifications;
the charging IC model is XT2052Y2ASR.
As a further improvement of the above technical solution, the digital potentiometer module includes a programmable resistor U4, the chip model of the resistor U4 is MCP4017, the resistor U4 is provided with an SCL end and an SDA end, the W pin of the resistor U4 is connected with the ISET pin of the charging IC, and the processing module configures the resistance value by controlling the resistor through the IIC-SCL end and the IIC-SDA end;
The formula of the digital potentiometer module configuration resistance value is as follows:
R＝0+N*78.74
wherein N ranges from 0 to 128.
As a further improvement of the above technical solution, the resistor network module includes a resistor unit and a switch unit, where the resistor unit includes a configuration resistor R6, a configuration resistor R7, and a configuration resistor R8, and the switch unit includes a transistor Q6, a transistor Q7, and a transistor Q8;
The collector end of the triode Q6 is connected with an ISET pin of the charging IC through a configuration resistor R6, the base end of the triode Q6 is connected with the processing module, and the emitter of the triode Q6 is grounded;
the collector of the triode Q7 is connected with an ISET pin of the charging IC through a configuration resistor R7, the base end of the triode Q7 is connected with the processing module, and the emitter of the triode Q7 is grounded;
The collector of the triode Q8 is connected with an ISET pin of the charging IC through a configuration resistor R8, the base end of the triode Q8 is connected with the processing module, and the emitter of the triode Q8 is grounded;
the types of the triode Q6, the triode Q7 and the triode Q8 are the same, and the types of the triode Q6, the triode Q7 and the triode Q8 are PDTC124ET.
As a further improvement of the above technical solution, the processing module includes an operation processor, the operation processor obtains the battery voltage data from the voltage detection module, and after calculation, the battery capacity is saved, and the charging control module is controlled according to the battery capacity to select a proper charging current value to charge the battery;
When the operation processor prepares to charge the battery, the record of the battery capacity in the memory is firstly inquired, if the record exists, the proper charging current is directly selected according to the recorded capacity, and if the record does not exist, the pre-charging process is carried out to calculate the battery capacity.
The beneficial effects of the invention are as follows: through the battery capacity of automatic detection its collocation to select suitable charge current value and charge for the battery according to the battery capacity, can charge for the battery of multiple different specifications, reduce the management and control degree of difficulty, effectual saving the cost.
Drawings
FIG. 1 is a diagram of the overall framework of the present invention;
FIG. 2 is a schematic circuit diagram of a battery voltage detection module according to the present invention;
FIG. 3 is a flow chart of the battery capacity calculation of the present invention;
fig. 4 is a schematic circuit diagram of a charge control module according to a first embodiment of the present invention;
FIG. 5 is a summary of 8 resistor configuration modes of the present invention;
fig. 6 is a schematic circuit diagram of a charge control module according to a second embodiment of the present invention;
fig. 7 is a diagram showing a summary of the actual corresponding configuration resistance values of several battery capacities according to the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the invention can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1, the invention discloses a self-adaptive charging method of a Beidou positioning terminal, which comprises a battery voltage detection module, a processing module, a charging control module and a memory, wherein the charging control module comprises a charging IC (integrated circuit), the processing module is used for precharging a battery, the battery voltage detection module is used for detecting the voltage of the battery, analyzing the data change of the battery voltage, calculating the battery capacity and storing the battery capacity in the memory, and selecting a proper configuration resistance value for the charging IC according to the battery capacity in the memory record so as to realize the self-adaptive configuration of the battery charging current. The invention can automatically detect the matched battery capacity and select proper charging current for the battery according to the capacity, thereby enabling the product to be automatically suitable for the rechargeable batteries with various capacities, unifying the hardware model of the product and facilitating the production and management.
Further, referring to fig. 2, the battery voltage detection module includes a switch circuit and a voltage dividing circuit, the switch circuit is electrically connected with the voltage dividing circuit, the switch circuit is externally connected with a battery power supply, when the battery voltage needs to be detected, the voltage dividing circuit and the battery power supply are turned on by opening the switch circuit, the voltage dividing circuit is provided with a port of the AD converter, and after the voltage dividing of the battery power supply is realized, the port of the AD converter obtains sampling voltages for matching with the AD converters with various specifications.
The switching circuit comprises a first switch, a second switch and a pull-up resistor R1, wherein the first switch is a triode Q1, the model of the triode Q1 is PDTC124ET, the second switch is a field effect tube Q2, the model of the field effect tube Q2 is DMP2305U, the base end of the triode Q1 is externally connected with a processing module, the emitter is grounded, the collector end is connected with the grid of the field effect tube Q2 and is connected to the source electrode of the Q2 through the pull-up resistor R1, and the drain end of the field effect tube Q2 is connected with a voltage dividing circuit. The voltage dividing circuit comprises a voltage dividing resistor R2 and a voltage dividing resistor R3, one end of the voltage dividing resistor R2 is connected with the drain end of the field effect transistor Q2, the other end of the voltage dividing resistor R2 is grounded through the voltage dividing resistor R3, an AD port is arranged between the voltage dividing resistor R2 and the voltage dividing resistor R3, and the AD port is used for being connected with various AD converters.
In the technical scheme, the voltage dividing circuit reduces the battery voltage to a voltage value suitable for the port of the AD converter in proportion, and the AD converter realizes analog-to-digital conversion and data acquisition. In the circuit of the battery voltage detection module, a triode Q1, a field effect tube Q2 and a resistor R1 form a switching circuit, a voltage dividing resistor R2 and a voltage dividing resistor R3 form a voltage dividing circuit, and when the battery voltage needs to be detected, the processing module controls the switching circuit to open the field effect tube Q2 and switch on the voltage dividing circuit and a battery power supply. The battery voltage of 4.2V can obtain the sampling voltage of 2.946V at the AD port after being divided by the resistors R3 and R2, and most AD converters can be matched. When the battery voltage does not need to be detected, the processing module can close the field effect transistor Q2 to prevent the voltage dividing resistors R3 and R2 from causing battery power loss.
Still further, the processing module includes an operation processor, and the operation processor obtains the battery voltage data from the voltage detection module, referring to fig. 3, after calculation, saves the battery capacity, and controls the charging control module to select a suitable charging current to charge the battery according to the battery capacity. When the operation processor prepares to charge the battery, the record of the battery capacity in the memory is firstly inquired, if the record exists, the proper charging current is directly selected according to the recorded capacity, and if the record does not exist, the pre-charging process is carried out to calculate the battery capacity.
In addition, the charging control module comprises a resistor network module and a digital potentiometer module.
Referring to fig. 4, in the first embodiment of the present invention, a resistor network module is selected for resistor value configuration, an ISET pin of a charging IC is connected with the resistor network module, a VIN pin of the charging IC is externally connected with a power module, a VBAT pin of the charging IC is provided with a battery output end BAT2, the resistor network module is externally connected with a processing module, and the processing module is used for controlling the resistor network module to form a resistor network to ground, and outputting charging current values with various specifications from the battery output end BAT2 of the charging IC.
The resistor network module comprises a resistor unit, wherein the resistor unit comprises a configuration resistor R6, a configuration resistor R7 and a configuration resistor R8. The resistor network module comprises a switch unit, wherein the switch unit comprises a triode Q6, a triode Q7 and a triode Q8; the collector end of the triode Q6 is connected with an ISET pin of the charging IC through a configuration resistor R6, the base end of the triode Q6 is connected with the processing module, and the emitter of the triode Q6 is grounded; the collector of the triode Q7 is connected with an ISET pin of the charging IC through a configuration resistor R7, the base end of the triode Q7 is connected with the processing module, and the emitter of the triode Q7 is grounded; the collector of the triode Q8 is connected with an ISET pin of the charging IC through a configuration resistor R8, the base end of the triode Q8 is connected with the processing module, and the emitter of the triode Q8 is grounded.
Taking the charging IC of the chip type XT2052Y2ASR as an example, its charging current is determined by the ground resistance of the ISET pin, ibat=1000/Rset. The resistors R6, R7, R8 and the triodes Q6, Q7, Q8 form a ground resistor network configurable by the operation processor. The 3 IO ports of the operation processor are respectively turned on and off through 3 triodes Q6, Q7 and Q8, so that 3 configuration resistors R6, R7 and R8 are connected in parallel to realize 8 resistance configuration modes, and the 8 resistance configuration modes refer to FIG. 5.
Referring to fig. 6, in the second embodiment of the present invention, a digital potentiometer module is selected for resistance value configuration, an ISET pin of a charging IC is connected with the digital potentiometer module, a VIN pin of the charging IC is externally connected with a power module, a VBAT pin of the charging IC is provided with a battery output end BAT2, the digital potentiometer module is externally connected with a processing module, a formula for configuring resistance values is r=0+n×78.74, wherein N ranges from 0to 128, and the processing module is used for controlling the digital potentiometer module, so that the digital potentiometer module can configure a plurality of resistance values, and the battery output end BAT2 of the charging IC outputs charging current values with various specifications. The digital potentiometer module comprises a programmable resistor U4, wherein the resistor U4 is provided with an SCL end and an SDA end, and the W pin of the resistor U4 is connected with the ISET pin of the charging IC. The processing module is used for configuring resistance values through IIC-SCL end and IIC-SDA end control resistors.
In the above embodiment, the chip U4 contains a 7-bit control register inside, and the resistance value between the B pin and the W pin thereof is controlled by the register inside the chip. The register is operated by the processor through the IIC interface, and 2^7 =128 states can be realized. A chip with a maximum resistance of 10K was selected, with a step value of 10K/(128-1) =78.74R. That is, the chip U4 can realize a resistance value of 0+n×78.74 (n=0 to 128) by IIC configuration. When we calculate or query the battery capacity. The theoretically optimal charging current for the battery is Ibat. rset=1200/Ibat can be obtained from the current calculation formula ibat=1200/Rset of the charging IC. Since the configuration resistor is implemented by a purely digital potentiometer. Resistor value rset=n×78.74 of the digital potentiometer. Wherein N is a configuration parameter and N is a positive integer.
Thus, it is possible to obtain: the control parameter N= (1200/Ibat)/78.74 of the digital potentiometer is written into the control register of the MCP4017 through the IIC interface, so that the optimal configuration resistance value can be realized.
Taking several typical battery capacities as shown in fig. 7 as an example, more accurate resistance control, and thus more accurate charging current control, can be achieved by the digital potentiometer. The actual charging current is made closer to the ideal charging current of the battery. Can give more proper configuration values for batteries with various capacities.
The manner of configuring the resistance value according to the first preferred embodiment of the present invention is as follows: when the battery charge is turned on, the switch state and the charge current need to be selected according to the battery capacity stored in the memory.
The calculation of the battery capacity is mainly realized through a constant-current pre-charging process, and the basis is the corresponding relation between the voltage and the capacity percentage of the conventional lithium battery. The Open Circuit Voltage (OCV) of a conventional lithium battery has a fixed correspondence with its remaining capacity:
100％----4.20V；90％----4.06V；80％----3.98V；70％----3.92V；
60％----3.87V；50％----3.82V；40％----3.79V；30％----3.77V；
20％----3.74V；10％----3.68V；5％----3.45V；0％----3.00V。
With reference to the corresponding relation, the electric quantity (3.74V-3.92V) of 20-70% of the middle section is taken as a pre-charging section, the linearity ratio of the battery voltage and the capacity in the section is good, the charging process can be ensured to be in a constant current stage, and the battery capacity can be conveniently and accurately calculated through integration of the charging time.
When the operation processor prepares to charge the battery, the record of the battery capacity in the memory is firstly inquired, and if the record exists, the proper charging current can be directly selected according to the recorded capacity. If not, the pre-charge process is entered to calculate the battery capacity. The pre-charging process can check the state of an external power supply, ensure that the battery can be charged, start the detection function of the battery voltage detection module, discharge the battery by using a voltage dividing resistor or other circuits for voltage detection until the voltage of the battery is reduced to a constant voltage value of 3.74V, and start a constant current charging process of a minimum gear, so that the battery with the minimum configuration can be ensured to be safe. The charging current is set to I and its start-up time is recorded. In the charging process, the operation processor can circularly detect the voltage of the battery until the battery is charged to 3.92V, and the pre-charging is finished. Then, the precharge time T is calculated, and the charge quantity q=t×i of the battery. Because the battery capacity in the 3.74V-3.92V interval accounts for 50% of the total capacity. The total capacity of the battery is 2Q. This data is stored in memory. The charging current setting of the subsequent device is referred to as such.
In order to ensure charging safety, it is generally required to design the charging current of the battery to be less than 0.5C of the battery capacity, but in the safety interval range, the charging current should be increased as much as possible to reduce the charging time. The charging IC of the charging control module is XT2052, the resistance of the resistor R8 is 6.4K, the resistance of the resistor R7 is 3.9K, and the resistance of the resistor R6 is 1.8K, and then the calculation is performed according to the calculation formula of the parallel resistance. According to the charge current setting formula of the charge IC (model number XT2052Y2 ASR): ibat=1000/Rset. The charging current values corresponding to the 8 states can be calculated. Since the required charging current is less than 0.5C, the minimum battery capacity corresponding to 7 states of charge can be calculated from the charging current value, and it is noted that the 8 th state in fig. 5 is the off state of charge (state of Q6, Q7, Q8 is 000).
When the device program starts the battery charging process, the most suitable charging current can be configured for the device battery by selecting the most suitable switching state and charging current value according to the indexes shown in fig. 5 according to the battery capacity stored in the memory, so as to balance the charging time and the charging safety.
The beneficial effects of the invention are as follows: through the battery capacity of automatic detection its collocation to select suitable charge current value and charge for the battery according to the battery capacity, can charge for the battery of multiple different specifications, reduce the management and control degree of difficulty, effectual saving the cost.
While the preferred embodiment of the present application has been described in detail, the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application, and the equivalent modifications or substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (4)
1. The self-adaptive charging method of the Beidou positioning terminal is characterized by comprising a battery voltage detection module, a processing module, a charging control module and a memory, wherein the charging control module comprises a charging IC (integrated circuit), the processing module is used for precharging a battery, the battery voltage detection module is used for detecting the voltage of the battery, the processing module is used for analyzing the data change of the battery voltage, calculating the battery capacity and storing the battery capacity in the memory, and selecting a proper configuration resistance value for the charging IC of the charging control module according to the battery capacity in the memory record so as to realize the self-adaptive configuration of the battery charging current;
The battery voltage detection module comprises a switch circuit and a voltage division circuit, the switch circuit is electrically connected with the voltage division circuit, and the switch circuit is externally connected with a battery power supply; when the battery voltage is required to be detected, the voltage dividing circuit and the battery power supply are connected by opening the switch circuit; the voltage dividing circuit is provided with a port of the AD converter, and after the voltage dividing circuit divides the battery power supply, the port of the AD converter obtains sampling voltages for matching with the AD converters with various specifications;
the switching circuit comprises a first switch, a second switch and a pull-up resistor R1, wherein the first switch is a triode Q1, and the second switch is a field effect transistor Q2; the base electrode end of the triode Q1 is externally connected with a processing module, the emitter electrode is grounded, the collector electrode end is connected with the grid electrode of the field effect tube Q2 and is connected to the source electrode of the Q2 through a pull-up resistor R1, and the drain electrode end of the field effect tube Q2 is connected with a voltage dividing circuit;
The voltage dividing circuit comprises a voltage dividing resistor R2 and a voltage dividing resistor R3, one end of the voltage dividing resistor R2 is connected with the drain end of the field effect transistor Q2, the other end of the voltage dividing resistor R2 is grounded through the voltage dividing resistor R3, an AD port is arranged between the voltage dividing resistor R2 and the voltage dividing resistor R3, and the AD port is used for connecting various AD converters;
The charging control module also comprises a resistor network module or a digital potentiometer module; the ISET pin of the charging IC is connected with a resistor network module, the VIN pin of the charging IC is externally connected with a power supply module, the VBAT pin of the charging IC is provided with a battery output end BAT2, the resistor network module is externally connected with a processing module, and the processing module is used for controlling the resistor network module to form a grounding resistor network and outputting charging current values with various specifications from the battery output end BAT2 of the charging IC;
Or an ISET pin of the charging IC is connected with the digital potentiometer module, a VIN pin of the charging IC is externally connected with the power module, a VBAT pin of the charging IC is provided with a battery output end BAT2, the digital potentiometer module is externally connected with the processing module, and the processing module is used for controlling the digital potentiometer module to enable the digital potentiometer module to be configured with a plurality of resistance values, so that the battery output end BAT2 of the charging IC outputs charging current values with various specifications;
the charging IC model is XT2052Y2ASR;
The digital potentiometer module comprises a programmable resistor U4, the chip model of the resistor U4 is MCP4017, the resistor U4 is provided with an SCL end and an SDA end, the SCL end and the SDA end of the resistor U4 are connected with an IIC-SCL end and an IIC-SDA end of a processing module, a W pin of the resistor U4 is connected with an ISET pin of a charging IC, and the processing module controls the resistor to configure the resistance value through the IIC-SCL end and the IIC-SDA end; the formula of the digital potentiometer module configuration resistance value is as follows:
R＝0+N*78.74
wherein N ranges from 0 to 128;
The resistor network module comprises a resistor unit and a switch unit, wherein the resistor unit comprises a configuration resistor R6, a configuration resistor R7 and a configuration resistor R8, and the switch unit comprises a triode Q6, a triode Q7 and a triode Q8; the collector end of the triode Q6 is connected with an ISET pin of the charging IC through a configuration resistor R6, the base end of the triode Q6 is connected with the processing module, and the emitter of the triode Q6 is grounded; the collector of the triode Q7 is connected with an ISET pin of the charging IC through a configuration resistor R7, the base end of the triode Q7 is connected with the processing module, and the emitter of the triode Q7 is grounded; the collector of the triode Q8 is connected with an ISET pin of the charging IC through a configuration resistor R8, the base end of the triode Q8 is connected with the processing module, and the emitter of the triode Q8 is grounded; the types of the triode Q6, the triode Q7 and the triode Q8 are the same, and the types of the triode Q6, the triode Q7 and the triode Q8 are PDTC124ET.
2. The adaptive charging method of the Beidou positioning terminal according to claim 1, wherein the pre-charging process checks whether an external power supply is in a charged state, the external power supply is in the charged state, the battery voltage detection module is started, and the battery is discharged until the battery voltage is reduced to a constant voltage value, and the constant voltage value is maintained for charging.
3. The self-adaptive charging method of the Beidou positioning terminal according to claim 1, wherein when the battery charging is started, a switch state and a charging current are selected according to the battery capacity stored in a memory, and the switch state is a control state of a processing module on a configuration resistance value.
4. The self-adaptive charging method of the Beidou positioning terminal according to any one of claims 1-3, wherein the processing module comprises an operation processor, the operation processor acquires battery voltage data from the voltage detection module, the battery capacity is saved after calculation, and the charging control module is controlled to select a proper charging current value to charge the battery according to the battery capacity;
When the operation processor prepares to charge the battery, the record of the battery capacity in the memory is firstly inquired, if the record exists, the proper charging current is directly selected according to the recorded capacity, and if the record does not exist, the pre-charging process is carried out to calculate the battery capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110405274.9A CN112994178B (en) | 2021-04-15 | 2021-04-15 | Self-adaptive charging method for Beidou positioning terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110405274.9A CN112994178B (en) | 2021-04-15 | 2021-04-15 | Self-adaptive charging method for Beidou positioning terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112994178A CN112994178A (en) | 2021-06-18 |
| CN112994178B true CN112994178B (en) | 2024-05-31 |
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| KR20160133973A (en) * | 2015-05-14 | 2016-11-23 | 삼성에스디아이 주식회사 | Battery pack |
| WO2017000573A1 (en) * | 2015-06-30 | 2017-01-05 | 中兴通讯股份有限公司 | Adapter and charging method therewith |
| CN215185931U (en) * | 2021-04-15 | 2021-12-14 | 深圳市伊爱高新技术开发有限公司 | Charging control circuit of digital potentiometer |
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| KR970019937U (en) * | 1995-10-31 | 1997-05-26 | Battery charger of wireless communication device | |
| JPH11355969A (en) * | 1998-06-09 | 1999-12-24 | Matsushita Electric Ind Co Ltd | Charging equipment |
| JP2002238170A (en) * | 2001-02-13 | 2002-08-23 | Denso Corp | Charging controller |
| JP2014033580A (en) * | 2012-08-06 | 2014-02-20 | Smk Corp | Charger |
| CN103199600A (en) * | 2013-04-03 | 2013-07-10 | 深圳市晶福源电子技术有限公司 | Charge control circuit and charge control method |
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| WO2017000573A1 (en) * | 2015-06-30 | 2017-01-05 | 中兴通讯股份有限公司 | Adapter and charging method therewith |
| CN215185931U (en) * | 2021-04-15 | 2021-12-14 | 深圳市伊爱高新技术开发有限公司 | Charging control circuit of digital potentiometer |
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| CN112994178A (en) | 2021-06-18 |
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