CN105021999A - Vehicle-mounted storage batter capacity monitoring method and apparatus - Google Patents
Vehicle-mounted storage batter capacity monitoring method and apparatus Download PDFInfo
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- CN105021999A CN105021999A CN201510497140.9A CN201510497140A CN105021999A CN 105021999 A CN105021999 A CN 105021999A CN 201510497140 A CN201510497140 A CN 201510497140A CN 105021999 A CN105021999 A CN 105021999A
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Abstract
The invention provides a vehicle-mounted storage batter capacity monitoring method and apparatus. According to the monitoring method, a controller collects the internal resistance of a storage battery; the internal resistance is compared with a correspondence relation table of residual storage battery capacities and storage battery internal resistances to determine the residual capacity of the storage battery, wherein the correspondence relation table is stored in the controller in advance; and the residual capacity is sent to an instrument for displaying, thereby warning the driver. The cost is low; and a problem that the cost is high when a storage battery capacity sensor is used for monitoring the residual capacity of the storage batter can be effectively solved.
Description
Technical field
The present invention relates to field of measuring technique, particularly relate to a kind of Vehicular accumulator cell capacity monitoring method and device.
Background technology
On automobile, the major function of accumulator is for automobile starter provides electric energy, automobile can be caused to start, have a strong impact on the normal use of automobile when discharged or defective battery or when damaging.For this reason, present automobile starts assembled batteries capacity sensor, for monitoring accumulator capacity, when accumulator capacity is too low or battery damage time can driver be reminded in time to charge a battery, maintain or change accumulator, avoid causing vehicle to cast anchor because of accumulator problem in vehicle use procedure.
Accumulator capacity sensor is by monitoring battery tension, accumulator starting current, temperature, then the algorithm by presetting in controller, then can the capacity of monitor Vehicular accumulator cell.But Vehicular accumulator cell fitted capacity sensor can increase the assembly cost of Vehicular accumulator cell significantly.
Summary of the invention
The invention provides a kind of Vehicular accumulator cell capacity monitoring method and device, efficiently solve the high cost problem caused with accumulator capacity Sensor monitoring accumulator residue appearance capacity.
To achieve these goals, the invention provides following technical scheme:
A kind of Vehicular accumulator cell capacity monitoring method, comprises the steps:
Point is fought and to be powered on to controller;
Controller obtains the definite value AC current values between the first connection terminal and the second connection terminal and sends to MCU;
Obtain the ac voltage between the 3rd connection terminal and the 4th connection terminal, and the described ac voltage after the conversion of A/D modular converter is issued MCU;
By MCU by described through A/D modular converter conversion after described ac voltage divided by the effective value of described definite value AC current values, obtain accumulator internal resistance;
According to accumulator capacity and accumulator internal resistance mapping table, determine remaining battery capacity.
Preferably, determine described accumulator capacity and accumulator internal resistance mapping table, also comprise:
Step 1: certain the model standard storage battery choosing multiple 100% capacity;
Step 2: apply alternating constant current at described accumulator positive and negative electrode two ends;
Step 3: the alternating voltage effective value measuring described accumulator positive and negative electrode two ends;
Step 4: by described alternating voltage effective value divided by described alternating constant current, then internal resistance value when to obtain described accumulator capacity be 100%.
Step 5: after described battery discharging 15%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, repeat step 2, step 3, step 4, then internal resistance value when to obtain described accumulator capacity be 85%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%.
Step 6: obtain described model standard storage battery capacity and internal resistance mapping table.
Preferably, accumulator capacity described in described determination and accumulator internal resistance mapping table, also comprise: described model standard storage battery capacity and internal resistance mapping table are stored in MCU.
Preferably, described controller obtains the definite value AC current values between the first connection terminal and the second connection terminal, comprising: controller obtains the definite value AC current values between the first connection terminal and the second connection terminal by alternating-current constant-current source circuit module.
Preferably, the ac voltage between described acquisition the 3rd connection terminal and the 4th connection terminal, comprising: obtain the ac voltage between the 3rd connection terminal and the 4th connection terminal by ac voltage measurement module.
Preferably, described monitoring method also comprises: described remaining battery capacity is sent to combination instrument and shows by controller.
Preferably, described monitoring method also comprises: if monitor the threshold values that described accumulator internal resistance is greater than setting, being then about to damage by described accumulator needs the information changed to send to combination instrument to show.
To achieve these goals, the invention provides following technical scheme:
A kind of Vehicular accumulator cell capacity monitoring device, comprising: accumulator, ignition switch, controller; Described controller comprises supply module, alternating current output module, ac voltage measurement module, A/D modular converter and MCU; One end of described ignition switch connects described accumulator, the other end is connected with supply module by the 5th connection terminal P5 of controller; Described alternating current output module is connected to described accumulator two ends, for obtaining the definite value AC current values between the first connection terminal and the second connection terminal by the first connection terminal P1 of controller and the second connection terminal P2; Described ac voltage measurement module is connected to described accumulator two ends, for obtaining the ac voltage between the 3rd connection terminal and the 4th connection terminal by the 3rd connection terminal P3 of controller and the 4th connection terminal P4.
Preferably, described monitoring device also comprises combination instrument, and described combination instrument is connected with controller, for showing described remaining battery capacity.
Preferably, accumulator capacity and internal resistance mapping table is stored in described MCU.
Beneficial effect of the present invention is:
The present invention gathers accumulator internal resistance by controller, by the remaining battery capacity that prestores in this internal resistance and controller and the comparison of accumulator internal resistance mapping table, thus determine remaining battery capacity, and this residual capacity is issued instrument and carry out showing to point out driver.This monitoring method cost is low, effectively solves the problem adopting accumulator capacity Sensor monitoring remaining battery capacity cost high.
Accompanying drawing explanation
Fig. 1 is Vehicular accumulator cell capacity monitoring method flow diagram of the present invention.
Fig. 2 is that Vehicular accumulator cell of the present invention residue holds capacity monitoring schematic diagram of device.
Fig. 3 is the structured flowchart of controller system of the present invention.
1, accumulator 2, ignition switch 3, combination instrument 4, controller P1, the first connection terminal P2, the second connection terminal P3, the 3rd connection terminal P4, the 4th connection terminal P5, the 5th connection terminal
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
As shown in Figure 1, be Vehicular accumulator cell capacity monitoring method flow diagram of the present invention.Key is pulled out and after forwarding key to some fire screen as driver, controller 4 powers on, controller 4 is started working, in controller 4, MCU control alternating-current constant-current source circuit module is passed through, first connection terminal P1 and the second connection terminal P2 exports the definite value alternating current of set time, because accumulator 1 has internal resistance, this definite value alternating current fails to be convened for lack of a quorum and produce alternating voltage on the loop of accumulator 1, ac voltage measurement module in controller 4 monitors this ac voltage by the 3rd connection terminal P3 and the 4th connection terminal P4, and described ac voltage is issued MCU process after the conversion of A/D modular converter, this magnitude of voltage is obtained accumulator internal resistance divided by definite value alternating current effective value by MCU, again by this internal resistance value and the accumulator capacity and the comparison of internal resistance corresponding relation database that are stored in advance in MCU inside, according to this internal resistance value determination remaining battery capacity, this remaining battery capacity is sent on combination instrument 3 and shows, driver can know accumulator electric-quantity thus determine the need of charging, maintenance etc.
Particularly, first remaining battery capacity and internal resistance corresponding relation data in advance are stored in controller 4, after controller 4 works on power, in controller 4, MCU controls alternating-current constant-current source circuit module within every 2 minutes, to export 4 seconds frequencies is 1000Hz effective value is the alternating constant current of 1A by the first connection terminal P1 and the second connection terminal P2, because accumulator 1 has internal resistance, this alternating constant current can produce alternating voltage on the loop of accumulator 1, ac voltage measurement module in controller 4 monitors this ac voltage by the 3rd connection terminal P3 and the 4th connection terminal P4, and this ac voltage is issued MCU process after the conversion of A/D modular converter, this magnitude of voltage 5.35mV is obtained accumulator internal resistance 5.35m Ω divided by this alternating constant current effective value 1A by MCU, again this internal resistance value 5.35m Ω and the accumulator capacity and internal resistance mapping table being stored in advance in MCU inside are compared, determine that remaining battery capacity is about 80% according to this internal resistance value 5.35m Ω, this remaining battery capacity 80% is sent on combination instrument 3 and shows.
Wherein, determine described accumulator capacity and accumulator internal resistance mapping table, also comprise the steps:
Step 1: certain the model standard storage battery choosing multiple 100% capacity;
Step 2: apply alternating constant current at described accumulator positive and negative electrode two ends;
Step 3: the alternating voltage effective value measuring described accumulator positive and negative electrode two ends;
Step 4: by described alternating voltage effective value divided by described alternating constant current, then internal resistance value when to obtain described accumulator capacity be 100%.
Step 5: after described battery discharging 15%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, repeat step 2, step 3, step 4, then internal resistance value when to obtain described accumulator capacity be 85%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%.
Step 6: obtain described model standard storage battery capacity and internal resistance mapping table.
Particularly, for a light truck, accumulator model is 6-QA-100, during accumulator 100% electricity, its capacity is 100Ah, first the internal resistance value under this model accumulator different capabilities is measured, obtain accumulator capacity and internal resistance mapping table, measuring method is: get the 100Ah accumulator that meets 100% electricity of GB/T5008 " lead-acid starter battery technical conditions " standard, by this accumulator positive on test-bed, negative pole two ends apply frequency to be 1000Hz effective value are the alternating constant current of 1A, accumulator positive is measured with interchange millivolt voltage table, the alternating voltage effective value at negative pole two ends, by this alternating voltage effective value divided by effective value 1A, namely internal resistance value when to obtain this accumulator capacity be 100%.
Internal resistance value when measurement accumulator capacity is 85%: get the 100Ah accumulator that meets 100% electricity of GB/T5008 " lead-acid starter battery technical conditions " standard, on test-bed by this accumulator with steady current 5A discharge 3h, 5A is multiplied by 3h, the electricity of release is 15Ah, now residual capacity is that 100Ah deducts 15Ah and equals 85Ah, again by this accumulator positive on test-bed, negative pole two ends apply frequency to be 1000Hz effective value are the alternating constant current of 1A, accumulator positive is measured with interchange millivolt voltage table, the alternating voltage effective value at negative pole two ends, by this alternating voltage effective value divided by effective value 1A, namely internal resistance value when to obtain this accumulator capacity be 85%.
Internal resistance value when measurement remaining battery capacity is 80% is identical with said method, namely on test-bed by the 100Ah accumulator of 100% electricity with steady current 5A discharge 4h, 5A is multiplied by 4h, the electricity of release is 20Ah, now residual capacity is that 100Ah deducts 20Ah and equals 80Ah, again by this accumulator positive on test-bed, negative pole two ends apply frequency to be 1000Hz effective value are the alternating constant current of 1A, accumulator positive is measured with interchange millivolt voltage table, the alternating voltage effective value at negative pole two ends, by this alternating voltage effective value divided by effective value 1A, namely internal resistance value when to obtain this accumulator capacity be 80%.The internal resistance value method measured when accumulator capacity is 70%, 60% etc. is same as described above.As table 1 is obtained this model remaining battery capacity and internal resistance mapping table afterwards by all having measured.
Table 1. accumulator capacity and internal resistance mapping table
Composition graphs 2 and Fig. 3, the present invention also provides a kind of Vehicular accumulator cell capacity monitoring device, comprising: accumulator, ignition switch, controller; Described controller comprises supply module, alternating current output module, ac voltage measurement module, A/D modular converter and MCU; One end of described ignition switch connects described accumulator, the other end is connected with supply module by the 5th connection terminal P5 of controller; Described alternating current output module is connected to described accumulator two ends, for obtaining the definite value AC current values between the first connection terminal and the second connection terminal by the first connection terminal P1 of controller and the second connection terminal P2; Described ac voltage measurement module is connected to described accumulator two ends, for obtaining the ac voltage between the 3rd connection terminal and the 4th connection terminal by the 3rd connection terminal P3 of controller and the 4th connection terminal P4.
Further, described monitoring device also comprises combination instrument, and described combination instrument is connected with controller, for showing described remaining battery capacity.
Further, accumulator capacity and internal resistance mapping table is stored in described MCU.
The concrete observation process of said apparatus can refer to the description in the inventive method embodiment above, does not repeat them here.
The present invention proposes a kind of Vehicular accumulator cell residual capacity monitoring method and device, controller is adopted to monitor accumulator internal resistance meeting under certain condition, and by this accumulator internal resistance and accumulator capacity and the comparison of accumulator internal resistance corresponding relation database, thus determine remaining battery capacity, this remaining battery capacity is sent in instrument and shows.If monitor accumulator internal resistance when being greater than the threshold values of setting, accumulator is about to damage the information needing to change accumulator and sends to instrument to show.This monitoring method cost is low, effectively solves by the high problem of accumulator electric-quantity Sensor monitoring remaining battery capacity cost.
Above-described specific embodiment; object of the present invention, technical scheme are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Vehicular accumulator cell capacity monitoring method, is characterized in that, comprises the steps:
Point is fought and to be powered on to controller;
Controller obtains the definite value AC current values between the first connection terminal and the second connection terminal and sends to MCU;
Obtain the ac voltage between the 3rd connection terminal and the 4th connection terminal, and the described ac voltage after the conversion of A/D modular converter is issued MCU;
By MCU by described through A/D modular converter conversion after described ac voltage divided by the effective value of described definite value AC current values, obtain accumulator internal resistance;
According to accumulator capacity and accumulator internal resistance mapping table, determine remaining battery capacity.
2. monitoring method according to claim 1, is characterized in that, determines described accumulator capacity and accumulator internal resistance mapping table, also comprises:
Step 1: certain the model standard storage battery choosing multiple 100% capacity;
Step 2: apply alternating constant current at described accumulator positive and negative electrode two ends;
Step 3: the alternating voltage effective value measuring described accumulator positive and negative electrode two ends;
Step 4: by described alternating voltage effective value divided by described alternating constant current, then internal resistance value when to obtain described accumulator capacity be 100%.
Step 5: after described battery discharging 15%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, repeat step 2, step 3, step 4, then internal resistance value when to obtain described accumulator capacity be 85%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%.
Step 6: obtain described model standard storage battery capacity and internal resistance mapping table.
3. according to claim 2ly determine described accumulator capacity and accumulator internal resistance mapping table, it is characterized in that, also comprise: described model standard storage battery capacity and internal resistance mapping table are stored in MCU.
4. monitoring method according to claim 1, it is characterized in that, described controller obtains the definite value AC current values between the first connection terminal and the second connection terminal, comprising: controller obtains the definite value AC current values between the first connection terminal and the second connection terminal by alternating-current constant-current source circuit module.
5. monitoring method according to claim 1, it is characterized in that, ac voltage between described acquisition the 3rd connection terminal and the 4th connection terminal, comprising: obtain the ac voltage between the 3rd connection terminal and the 4th connection terminal by ac voltage measurement module.
6. monitoring method according to claim 1, is characterized in that, described monitoring method also comprises: described remaining battery capacity is sent to combination instrument and shows by controller.
7. monitoring method according to claim 1, it is characterized in that, described monitoring method also comprises: if monitor the threshold values that described accumulator internal resistance is greater than setting, being then about to damage by described accumulator needs the information changed to send to combination instrument to show.
8. a Vehicular accumulator cell capacity monitoring device, is characterized in that, comprising: accumulator, ignition switch, controller; Described controller comprises supply module, alternating current output module, ac voltage measurement module, A/D modular converter and MCU; One end of described ignition switch connects described accumulator, the other end is connected with supply module by the 5th connection terminal P5 of controller; Described alternating current output module is connected to described accumulator two ends, for obtaining the definite value AC current values between the first connection terminal and the second connection terminal by the first connection terminal P1 of controller and the second connection terminal P2; Described ac voltage measurement module is connected to described accumulator two ends, for obtaining the ac voltage between the 3rd connection terminal and the 4th connection terminal by the 3rd connection terminal P3 of controller and the 4th connection terminal P4.
9. monitoring device according to claim 8, it is characterized in that, described monitoring device also comprises combination instrument, and described combination instrument is connected with controller, for showing described remaining battery capacity.
10. monitoring device according to claim 8, is characterized in that, store accumulator capacity and internal resistance mapping table in described MCU.
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| CN201510497140.9A CN105021999A (en) | 2015-08-13 | 2015-08-13 | Vehicle-mounted storage batter capacity monitoring method and apparatus |
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| CN201510497140.9A CN105021999A (en) | 2015-08-13 | 2015-08-13 | Vehicle-mounted storage batter capacity monitoring method and apparatus |
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| CN105676141A (en) * | 2016-01-27 | 2016-06-15 | 浙江大学 | Battery capacity on-line measuring system and measuring method based on damped oscillation |
| CN110456278A (en) * | 2019-07-31 | 2019-11-15 | 创领心律管理医疗器械（上海）有限公司 | Monitoring method, device and the follow-up method of the battery spent condition of AIMD, system and AIMD |
| CN111323716A (en) * | 2020-05-12 | 2020-06-23 | 陈永强 | Device and method for judging reliability of battery capacity and method for improving performance of storage battery |
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| CN105676141A (en) * | 2016-01-27 | 2016-06-15 | 浙江大学 | Battery capacity on-line measuring system and measuring method based on damped oscillation |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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