CN114814596A - Electric quantity detection device - Google Patents
Electric quantity detection device Download PDFInfo
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- CN114814596A CN114814596A CN202210223062.3A CN202210223062A CN114814596A CN 114814596 A CN114814596 A CN 114814596A CN 202210223062 A CN202210223062 A CN 202210223062A CN 114814596 A CN114814596 A CN 114814596A
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- China
- Prior art keywords
- pin
- module
- field effect
- energy storage
- effect transistor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001514 detection method Methods 0.000 title claims abstract description 87
- 238000004146 energy storage Methods 0.000 claims abstract description 57
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000005669 field effect Effects 0.000 claims description 66
- 238000010586 diagram Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- QSNQXZYQEIKDPU-UHFFFAOYSA-N [Li].[Fe] Chemical compound [Li].[Fe] QSNQXZYQEIKDPU-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
- G01R31/3832—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration without measurement of battery voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an electric quantity detection device, which comprises an electric quantity detection module and a processing module, wherein: the electric quantity detection module is respectively connected with the processing module and the energy storage module; the electric quantity detection module is used for detecting the input current and the output current of the energy storage module; the processing module is used for determining the discharging time of the energy storage module and/or the charging time for fully charging the energy storage module under the current power according to the input current and the output current, the accurate capacity can be calculated by detecting the real-time current flowing in or out through the embodiment of the invention, and the processing module is used for calculating how long the energy storage module can be used under the current power and/or how much time is required for fully charging.
Description
Technical Field
The invention relates to the technical field of detection, in particular to an electric quantity detection device.
Background
Most of energy storage power supplies adopt safe lithium iron phosphate batteries, the characteristics of the lithium iron batteries cannot estimate the actually existing capacity through the voltage of the batteries, and the existing scheme adopts a plurality of LED indicator lamps to indicate the approximate capacity, for example, 4 or 5 LEDs can be adopted to display the capacity of the energy storage power supplies, and after certain energy is consumed, 3 or 2 LEDs can be adopted to approximately show the residual amount of the energy, but the residual capacity cannot be accurately calculated, and the residual capacity can be used for a long time. How to accurately identify the residual capacity of the energy storage power supply is a problem which needs to be solved urgently at present.
Disclosure of Invention
In view of the above technical problems, the present invention provides an electric quantity detection apparatus.
The invention provides an electric quantity detection device, at least comprising: electric quantity detection module and processing module, wherein: the electric quantity detection module is respectively connected with the processing module and the energy storage module;
the electric quantity detection module is used for detecting the input current and the output current of the energy storage module;
the processing module is used for determining the discharging time of the energy storage module and/or the charging time for fully charging the energy storage module under the current power according to the input current and the output current.
Optionally, the power detection module is SH 367303.
Optionally, the processing module is STM8S005K 6.
Optionally, the second pin of the power detection module is connected to the eleventh pin of the processing module, and the third pin of the power detection module is connected to the twelfth pin of the processing module.
Optionally, the CHGD pin of the electricity quantity detection module is connected to the sources of the field effect transistor Q5, the field effect transistor Q7, and the field effect transistor Q9, the CHG pin is connected to the field effect transistor Q5, the field effect transistor Q7, and the gate of the field effect transistor Q9, the field effect transistor Q5, the field effect transistor Q7, the drain of the field effect transistor Q9 is connected to the DSGD pin, and the DSGD pin is connected to the drain of the field effect transistor Q4, the field effect transistor Q8, and the drain of the field effect transistor Q10, the field effect transistor Q4, the field effect transistor Q8, the source of the field effect transistor Q10 is connected to the detection resistor R45, the field effect transistor Q4, the field effect transistor Q8, and the gate of the field effect transistor Q10 is connected to the DSG, wherein the field effect transistor Q5, the field effect transistor Q7, and the field effect transistor Q9 are MOS charging transistors; the field effect transistor Q4, the field effect transistor Q8 and the field effect transistor Q10 are discharge MOS.
Optionally, a first end of the detection resistor r45 is connected to the eighth pin of the power detection module, and a second end of the detection resistor r45 is connected to the fifth pin of the energy storage module.
Optionally, the CTLC pin of the power detection module is connected to the thirteenth pin of the processing module.
Optionally, the Alarm pin of the power detection module is connected to the fourteenth pin of the processing module.
Optionally, a sixteenth pin of the electric quantity detection module is connected to a first pin of the energy storage module, a fifteenth pin of the electric quantity detection module is connected to a second pin of the energy storage module, a fourteenth pin of the electric quantity detection module is connected to a third pin of the energy storage module, and a thirteenth pin of the electric quantity detection module is connected to a fourth pin of the energy storage module.
Optionally, the processing module is configured to determine the current available time according to the total capacity of the energy storage module, the current remaining capacity and the current power.
The embodiment of the invention provides an electric quantity detection device, which comprises an electric quantity detection module and a processing module, wherein: the electric quantity detection module is respectively connected with the processing module and the energy storage module; the electric quantity detection module is used for detecting the input current and the output current of the energy storage module; the processing module is used for determining the discharging time of the energy storage module and/or the charging time for fully charging the energy storage module under the current power according to the input current and the output current, the accurate capacity can be calculated by detecting the real-time current flowing in or out through the embodiment of the invention, and the processing module is used for calculating how long the energy storage module can be used under the current power and/or how much time is required for fully charging.
Drawings
Fig. 1 is a schematic structural diagram of an electric quantity detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electric quantity detection module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a processing module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides an electric quantity detection apparatus, including: electric quantity detection module 102 and processing module 103, wherein: the electric quantity detection module 102 is respectively connected with the processing module 103 and the energy storage module 101;
the electric quantity detection module 102 is used for detecting the input current and the output current of the energy storage module;
specifically, the electric quantity detection module is installed at the front end of the energy storage power supply and used for detecting charging current, namely input current, of the energy storage module and output current of the energy storage module for discharging other equipment, and sending the detected input current and output current to the processing module.
The processing module 103 is configured to determine a discharging time of the energy storage module and/or a charging time for fully charging the energy storage module at the current power according to the input current and the output current.
Because the capacity of the energy storage module, i.e. the battery, is fixed, the processing module can calculate the accurate capacity according to the input current and the output current, i.e. as long as the real-time current flowing in or out is detected, and can use for a long time under the current power or need how much time to fully charge.
Specifically, the electric quantity detection device is installed on a circuit board inside an energy storage module, wherein the energy storage module can be an energy storage power supply.
Fig. 2 is a schematic structural diagram of an electric quantity detection module in an embodiment of the present invention, and as shown in fig. 2, the electric quantity detection module U1 is SH 367303. U1 battery protection IC, battery protection and battery voltage and current detection.
P + is connected with other circuits, B + is connected with the positive electrode of the battery, 1B + is connected with the positive electrode of the first section of the series battery, 2B + is connected with the positive electrode of the second section of the series battery, and 3B + is connected with the positive electrode of the third section of the series battery. P1 is connected to an energy storage module (battery).
Fig. 3 is a schematic structural diagram of a processing module in an embodiment of the present invention, and as shown in fig. 3, the processing module U2 is a single chip microcomputer, which may be an STM8S005K6 in an embodiment of the present invention, and is connected to U1, and may also be connected to each LED display lamp for displaying remaining stored energy; and the processing module is also connected with the key, so that the energy storage module can be controlled to be started or stopped.
The SCL and the SDA of the U1 are IIC bus signals and communicate with the processing module (single chip microcomputer), that is, the second pin SDA of the electric quantity detection module U1 is connected to the eleventh pin of the processing module U2, and the third pin SCL of the electric quantity detection module is connected to the twelfth pin of the processing module.
Optionally, the CHGD pin of the electricity quantity detection module is connected to the sources of the field effect transistor Q5, the field effect transistor Q7 and the field effect transistor Q9, the CHG pin is connected to the field effect transistor Q5, the field effect transistor Q7 and the gate of the field effect transistor Q9, the field effect transistor Q5, the field effect transistor Q7, the drain of the field effect transistor Q9 is connected to the DSGD pin, and the DSGD pin is connected to the drain of the field effect transistor Q4, the field effect transistor Q8 and the field effect transistor Q10, the field effect transistor Q4, the field effect transistor Q8, the source of the field effect transistor Q10 is connected to the detection resistor R45, the field effect transistor Q4, the field effect transistor Q8, and the gate of the field effect transistor Q10 is connected to the DSG, wherein the field effect transistor Q5, the field effect transistor Q7 and the MOS 9 are charging field effect transistor Q9; the field effect transistor Q4, the field effect transistor Q8 and the field effect transistor Q10 are discharge MOS.
In the figure, Q5, Q7 and Q9 are charging MOS; in the figure, Q4, Q8 and Q10 are discharge MOS;
MOS, is an abbreviation for MOSFET. A MOSFET Metal-Oxide Semiconductor Field Effect Transistor, referred to as a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET); the field effect transistor is divided into a PMOS (P channel type) transistor and an NMOS (N channel type) transistor, and belongs to an insulated gate field effect transistor. Typically a metal-oxide-semiconductor (semiconductor) field effect transistor, or so-called metal-insulator-semiconductor (insulator). G: a gate electrode; s: a source electrode; d: drain electrode. The source and drain of the MOS transistor can be reversed, and they are both N-type regions formed in the P-type back gate. In most cases, the two regions are identical, and even if the two regions are reversed, the performance of the device is not affected.
Optionally, a first end of the detection resistor r45 is connected to the eighth pin of the power detection module, and a second end of the detection resistor r is connected to the fifth pin of the energy storage module.
The current flowing through the R45, which may be in the forward direction or the reverse direction, is detected and calculated by the processing module MCU.
Optionally, the CTLC pin of the power detection module is connected to the thirteenth pin of the processing module.
The CTLC is a control signal, and when the processing module (the single chip microcomputer) gives a low level to the pin, the electric quantity detection module stops outputting.
Optionally, the Alarm pin of the power detection module is connected to the fourteenth pin of the processing module.
The Alarm pin of U1 sends out signal if abnormal battery occurs.
U1 is Reset pin, and the processing module MCU controls the power detection module U1 to restart.
Optionally, a sixteenth pin of the electric quantity detection module U1 is connected to the first pin of the energy storage module, a fifteenth pin of the electric quantity detection module is connected to the second pin of the energy storage module, a fourteenth pin of the electric quantity detection module is connected to the third pin of the energy storage module, and a thirteenth pin of the electric quantity detection module is connected to the fourth pin of the energy storage module.
Optionally, the processing module is configured to determine the current available time according to the total capacity of the energy storage module, the current remaining capacity and the current power.
The voltage of B + is the voltage across 1B-and 1B +, the voltage across 2B + and the voltage across 3B + and B + across 1B + and 2B + and 3B +. The capacity of the battery is constant, and the current service time is the total capacity of the battery-the current remaining capacity (Ah)/the current power (W/h).
The embodiment of the invention provides an electric quantity detection device, which comprises an electric quantity detection module and a processing module, wherein: the electric quantity detection module is respectively connected with the processing module and the energy storage module; the electric quantity detection module is used for detecting the input current and the output current of the energy storage module; the processing module is used for determining the discharging time of the energy storage module and/or the charging time for fully charging the energy storage module under the current power according to the input current and the output current, the accurate capacity can be calculated by detecting the real-time current flowing in or out through the embodiment of the invention, and the processing module is used for calculating how long the energy storage module can be used under the current power and/or how much time is required for fully charging.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An electrical quantity detection device, characterized by comprising at least: electric quantity detection module and processing module, wherein: the electric quantity detection module is respectively connected with the processing module and the energy storage module;
the electric quantity detection module is used for detecting the input current and the output current of the energy storage module;
the processing module is used for determining the discharging time of the energy storage module and/or the charging time for fully charging the energy storage module under the current power according to the input current and the output current.
2. The power detection device according to claim 1, wherein the power detection module is SH 367303.
3. The electrical quantity detection device according to claim 2, wherein the processing module is STM8S005K 6.
4. The power detection device of claim 3, wherein a second pin of the power detection module is connected to an eleventh pin of the processing module, and a third pin of the power detection module is connected to a twelfth pin of the processing module.
5. The power detection device of claim 1, wherein the CHGD pin of the power detection module is connected to the sources of the field effect transistors Q5, Q7, and Q9, the CHG pin is connected to the sources of the field effect transistors Q5, Q7, and Q9, the field effect transistor Q5, Q7, and Q9, and the DSGD pin is connected to the drains of the field effect transistors Q4, Q8, and Q10, the field effect transistor Q4, Q8, the source of the field effect transistor Q10 is connected to the detection resistor R45, the field effect transistor Q4, the field effect transistor Q8, and the gate of the field effect transistor Q10 is connected to the DSG, wherein the field effect transistor Q5, Q7, and Q9 are charging MOS; the field effect transistor Q4, the field effect transistor Q8 and the field effect transistor Q10 are discharge MOS.
6. The power detection device according to claim 5, wherein a first terminal of the detection resistor R45 is connected to the eighth pin of the power detection module, and a second terminal is connected to the fifth pin of the energy storage module.
7. The power detection device of claim 5, wherein the CTLC pin of the power detection module is connected to the thirteenth pin of the processing module.
8. The power detection device according to claim 6, wherein the Alarm pin of the power detection module is connected to the fourteenth pin of the processing module.
9. The power detection device according to claim 6, wherein a sixteenth pin of the power detection module is connected to the first pin of the energy storage module, a fifteenth pin of the power detection module is connected to the second pin of the energy storage module, a fourteenth pin of the power detection module is connected to the third pin of the energy storage module, and a thirteenth pin of the power detection module is connected to the fourth pin of the energy storage module.
10. The power detection device of claim 1, wherein the processing module is configured to determine the current available time according to the total capacity of the energy storage module, the current remaining capacity and the current power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210223062.3A CN114814596A (en) | 2022-03-09 | 2022-03-09 | Electric quantity detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210223062.3A CN114814596A (en) | 2022-03-09 | 2022-03-09 | Electric quantity detection device |
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| CN114814596A true CN114814596A (en) | 2022-07-29 |
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| CN202210223062.3A Pending CN114814596A (en) | 2022-03-09 | 2022-03-09 | Electric quantity detection device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130045404A1 (en) * | 2011-08-18 | 2013-02-21 | Taiwan Semiconductor Manufacturing Company, Ltd. | Battery Fuel Gauge Apparatus |
| CN204407963U (en) * | 2015-02-04 | 2015-06-17 | 上海长园维安电子线路保护有限公司 | A kind of lithium battery administration module possessing multifunction protection and electric quantity monitoring |
| CN104979519A (en) * | 2015-07-03 | 2015-10-14 | 广州市融成锂能锂电池有限公司 | Rechargeable lithium ion battery device |
| CN111313510A (en) * | 2020-04-02 | 2020-06-19 | 上海铁路站场调速技术中心有限公司 | Lithium iron phosphate battery protection board |
| CN111751747A (en) * | 2020-06-04 | 2020-10-09 | 深圳市普兰德储能技术有限公司 | Battery capacity measuring system and measuring method |
| CN113635765A (en) * | 2021-08-11 | 2021-11-12 | 安徽易合新能源科技有限公司 | 4 string power battery bluetooth communication protection control system |
-
2022
- 2022-03-09 CN CN202210223062.3A patent/CN114814596A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130045404A1 (en) * | 2011-08-18 | 2013-02-21 | Taiwan Semiconductor Manufacturing Company, Ltd. | Battery Fuel Gauge Apparatus |
| CN204407963U (en) * | 2015-02-04 | 2015-06-17 | 上海长园维安电子线路保护有限公司 | A kind of lithium battery administration module possessing multifunction protection and electric quantity monitoring |
| CN104979519A (en) * | 2015-07-03 | 2015-10-14 | 广州市融成锂能锂电池有限公司 | Rechargeable lithium ion battery device |
| CN111313510A (en) * | 2020-04-02 | 2020-06-19 | 上海铁路站场调速技术中心有限公司 | Lithium iron phosphate battery protection board |
| CN111751747A (en) * | 2020-06-04 | 2020-10-09 | 深圳市普兰德储能技术有限公司 | Battery capacity measuring system and measuring method |
| CN113635765A (en) * | 2021-08-11 | 2021-11-12 | 安徽易合新能源科技有限公司 | 4 string power battery bluetooth communication protection control system |
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