CN217506076U - Battery capacity detecting system - Google Patents
Battery capacity detecting system Download PDFInfo
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- CN217506076U CN217506076U CN202220082166.2U CN202220082166U CN217506076U CN 217506076 U CN217506076 U CN 217506076U CN 202220082166 U CN202220082166 U CN 202220082166U CN 217506076 U CN217506076 U CN 217506076U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a battery capacity detection system, which comprises a discharging unit, a charging unit, an electric power measuring unit, a control unit and a protection unit; the control unit can connect the battery to be tested into different current loops; when the real-time capacity of the battery to be measured needs to be measured quickly, the control unit accesses the battery to be measured into a loop of the discharge unit, the voltage of the battery under the conditions of open circuit and load is measured through the power measurement unit, and the internal resistance of the battery can be measured quickly on the premise that the load resistance is known and unchanged; when the capacity of the battery to be measured needs to be accurately measured, the control unit firstly accesses the battery to be measured into the charging unit, after the battery is fully charged, the control unit can automatically access the battery to be measured into a loop of the discharging unit, the discharging current is measured through the power measuring unit, the discharging time is recorded through the control unit, and therefore the accurate battery capacity can be calculated.
Description
Technical Field
The utility model relates to a battery test technical field especially relates to a battery capacity detecting system.
Background
With the development of new energy industry, the utilization of retired batteries in a gradient manner becomes a research hotspot. In the process, the retired batteries need to be matched with each other according to the actual capacity of the retired batteries, and the capacity of the retired batteries needs to be monitored for a long time in the subsequent use process. The electrical charge capacity detection is typically detected using two methods. One is to detect the power of the battery from full to empty in a discharging manner and integrate the power with time. The method can detect the battery capacity with high accuracy, but takes a long time. Another way is to estimate the battery capacity by measuring the internal resistance of the battery. The method has the advantages of high measurement speed and weak certainty of the relationship between the internal resistance and the capacity because the relationship between the internal resistance and the capacity of the battery can only be calculated through a mathematical formula and the individual performance parameters of each battery are different.
Therefore, a system capable of automatically detecting the battery capacity for a long time is proposed. The system can quickly estimate the battery capacity in a mode of measuring the internal resistance of the battery, and can accurately measure the battery capacity in a discharging mode.
Disclosure of Invention
The utility model aims at providing a system that can automize long-term test battery capacity makes its real-time capacity that can the short-term test battery, also can the complete capacity of accurate measurement battery.
In order to achieve the above object, the present invention provides a battery capacity detecting system, which includes a discharging unit, a charging unit, an electric power measuring unit, and a control unit, wherein the discharging unit, the charging unit, and the electric power measuring unit are electrically connected to a battery to be detected through the control unit; when the real-time capacity of the battery to be measured is measured quickly, the control unit accesses the battery to be measured into a loop of the discharge unit, the voltage of the battery to be measured under the conditions of open circuit and load is measured through the power measuring unit respectively, the internal resistance of the battery can be measured quickly, and the real-time capacity is obtained according to the coefficient relation between the internal resistance of the battery and the real-time capacity; when the capacity of the battery to be measured is accurately measured, the control unit firstly accesses the battery to be measured into the charging unit, after the battery is fully charged, the control unit can automatically access the battery to be measured into a loop of the discharging unit, the discharging current is measured through the electric power measuring unit, the discharging time is recorded through the control unit, and the accurate battery capacity is calculated.
Furthermore, the discharging unit adopts a modularized lap joint mode, a proper load can be selected according to the property of the battery to be tested so as to improve the discharging efficiency, a relay and a protection unit are arranged between the discharging unit and the battery to be tested, a current loop can be formed or disconnected by controlling the relay through the control unit, and the protection unit plays a role of breaking when danger occurs in the discharging process.
Furthermore, the charging unit is used for charging the battery to be tested to full charge, a relay and a protection unit are arranged between the charging unit and the battery to be tested, the relay can be controlled by the control unit to form or break a current loop, and the protection unit plays a role of breaking when danger occurs in the charging process.
Furthermore, the power measurement unit comprises a voltage measurement module, a current measurement module and a digital-to-analog conversion module, can measure the voltage and the current values of the battery end to be measured and the discharge unit end in different states, and transmits corresponding data to the control unit through the digital-to-analog conversion module.
Further, the control unit comprises a controller, a human-computer interaction interface, a function option key keyboard and a relay for controlling the current on-off of the discharging unit and the charging unit, and the controller canReceiving data transmitted by the power measuring unit and signals of the function option key-press keyboard, and calculating the internal resistance of the battery to be measured by the controller after selecting and measuring the real-time capacity through the function option key-press keyboard according to the formula
Wherein the internal resistance of the battery is
The voltage of the battery to be measured when the discharge unit is disconnected is
The resistance of the discharge cell is
The voltage at the load terminal of the discharge unit is
According to the attribute of the battery to be tested, the coefficient of the internal resistance and the real-time capacity of the battery to be tested is input into the controller through the functional option key keyboard, and the real-time capacity of the battery to be tested is obtained; after the complete capacity of the battery is measured through the selection of the function option key keyboard, the controller firstly accesses the battery to be measured into the charging unit, and automatically accesses the battery to be measured into the discharging unit after the battery is fully charged, the controller records the discharging time and calculates the complete battery capacity, and the formula is as follows, wherein the battery capacity is
Discharge current of
Discharge time of
。
Further, in the charging process of the controller, the real-time voltage of the battery to be measured is compared with the rated voltage, and the battery to be measured is not fully charged if the real-time voltage is not equal to the rated voltage, and is fully charged if the real-time voltage is equal to the rated voltage.
By the proposal, the beneficial effects of the utility model are that: the utility model provides a system that can automize and detect battery capacity for a long time makes its real-time capacity that can the short-term test battery, also can the complete capacity of accurate measurement battery. Compared with the prior art, the method saves labor cost in the battery capacity detection process, integrates measurement, control and interaction into one system, saves design space, reduces cost and avoids the risk of data loss.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
fig. 1 is a schematic diagram of a battery capacity detection system according to a first embodiment of the present invention.
Description of the drawing reference numbers: 1-battery capacity detection system, 11-discharge unit, 12-charging unit, 13-power measurement unit, 14-control unit, 15-protection unit, 141-controller, 142-human-computer interaction interface, 143-function option key keyboard, 144, 145-relay.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a battery capacity detecting system according to a first embodiment of the present invention. As shown in fig. 1, a battery capacity detection system 1 disclosed in the present embodiment includes a discharging unit 11, a charging unit 12, a power measuring unit 13, a control unit 14, and a protection unit 15.
The discharge unit 11 adopts a modular overlapping manner, and can select a proper load according to the attributes of the battery to be tested, so as to improve the discharge efficiency. A relay 144 and a protection unit 15 are arranged between the battery to be tested and the battery to be tested, the relay 144 can be controlled by the control unit 14 to form or break a current loop, and the protection unit 15 plays a role of breaking when danger occurs in the discharging process.
The charging unit 12 is used for charging the battery to be tested to full charge, a relay 145 and a protection unit 15 are arranged between the charging unit and the battery to be tested, the control unit 14 can control the relay 145 to form or break a current loop, and the protection unit 15 plays a role of breaking when danger occurs in the charging process.
The power measuring unit 13 includes a voltage measuring module, a current measuring module and a digital-to-analog conversion module, and can measure the voltage and current values of the battery terminal to be measured and the discharging unit terminal in different states, and transmit corresponding data to the control unit 14 through the digital-to-analog conversion module.
The controller 141 can receive the data transmitted by the power measuring unit 13 and the signal of the function option key keyboard 143, the man-machine interface 142 is connected with the controller 141 and can display the data in the controller 141, and after the real-time capacity is measured by selecting through the function option key keyboard 143, the controller 141 calculates the internal resistance of the battery to be measured, the formula is
Wherein the internal resistance of the battery is QUOTE
The voltage of the battery to be measured when the discharge unit 11 is turned off is QUOTE
The resistance of the discharge cell 11 is QUOTE
The load terminal voltage of the discharge unit 11 is QUOTE
Then, according to the attribute of the battery to be tested, the coefficient of the internal resistance and the real-time capacity of the battery to be tested is input into the controller 141 through the function option key keyboard 143, and the real-time capacity of the battery to be tested is obtained; after the complete capacity of the battery is selected and measured through the function option keypad 143, the controller 141 first accesses the battery to be measured to the charging unit 12, and automatically accesses the battery to the discharging unit 11 after the battery is fully charged, and the controller 141 records the discharging time and calculates the complete battery capacity according to the formula
Wherein the battery capacity is
Discharge current of
Discharge time of
。
During the charging process, the controller 141 compares the real-time voltage of the battery to be measured with the rated voltage, and if the real-time voltage is not equal to the rated voltage, the battery is not fully charged, and if the real-time voltage is equal to the rated voltage, the battery is fully charged.
To sum up, the utility model provides a can automize the system of long-term detection battery capacity, make its real-time capacity that can the short-term test battery, also can the complete capacity of accurate measurement battery. Compared with the prior art, the method saves labor cost in the battery capacity detection process, integrates measurement, control and interaction into one system, saves design space, reduces cost and avoids the risk of data loss.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (1)
1. A battery capacity detection system characterized by: the battery capacity detection system comprises a discharging unit, a charging unit, an electric power measuring unit and a control unit, wherein the discharging unit, the charging unit and the electric power measuring unit are electrically connected with a battery to be detected through the control unit; relays and protection units are arranged among the discharging unit, the charging unit and the battery to be tested, and the control unit controls the relays to be switched on and off; the power measuring unit comprises a voltage measuring module, a current measuring module and a digital-to-analog conversion module, and corresponding data are transmitted to the control unit through the digital-to-analog conversion module; the control unit comprises a controller, a human-computer interaction interface, a function option key keyboard and a relay, the human-computer interaction interface is connected with the controller and can display data in the controller, and the controller can receive the data transmitted by the power measurement unit and signals of the function option key keyboard so as to calculate the real-time capacity or the complete capacity of the battery to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220082166.2U CN217506076U (en) | 2022-01-13 | 2022-01-13 | Battery capacity detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220082166.2U CN217506076U (en) | 2022-01-13 | 2022-01-13 | Battery capacity detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217506076U true CN217506076U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220082166.2U Active CN217506076U (en) | 2022-01-13 | 2022-01-13 | Battery capacity detecting system |
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|---|---|
| CN (1) | CN217506076U (en) |
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2022
- 2022-01-13 CN CN202220082166.2U patent/CN217506076U/en active Active
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