A measurement method for suppressing battery power calculation jump caused by charging and discharging
By detecting the charging and discharging status of the lithium battery, it determines whether the power has jumped, and solves the problem of inaccurate calculation of the lithium battery during the solar charging and discharging process, and improves the accuracy and accuracy of the power detection.
Patent Information
- Application Number
- CN202111188809.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-10-12
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2041-10-12
AI Technical Summary
In the prior art, the discharge curve and charging curve of lithium batteries have large deviations, resulting in a jump in the power supply during the solar charging and discharge switching process, and the detection accuracy is not high.
By detecting the charging circuit and discharge current, we can judge whether the state is consistent and whether there is a state of charge switching, judge whether the battery capacity has jumped, and update or retain the power data to suppress the jump.
It effectively improves the accuracy of battery capacity detection, prevents calculation jumps due to different battery capacity curves, and ensures the accuracy of battery capacity data.
Smart Images
Figure CN114062942B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of measuring battery power, and in particular to a measurement method for suppressing battery power calculation jumps caused by charging and discharging. Background Art
[0002] Battery capacity is one of the important performance indicators to measure battery performance. It indicates the amount of electricity discharged by the battery under certain conditions. Battery capacity is divided into actual capacity, theoretical capacity and rated capacity according to different conditions.
[0003] The current method of measuring battery power is to detect the lithium battery voltage and then calculate the battery power based on the discharge curve or charging curve of the lithium battery. However, the existing discharge curve and charging curve have a large deviation, and the power will jump greatly during the switching process of solar charging and discharging. Summary of the invention
[0004] The purpose of the present invention is to provide a measurement method for suppressing battery power calculation jumps caused by charging and discharging, so as to solve the problem that the discharge curve and the charging curve have a large deviation and the power will jump greatly during the switching process of solar energy charging and discharging.
[0005] To achieve the above object, the present invention provides the following technical solution: a measurement method for suppressing battery power calculation jump caused by charging and discharging, comprising the following steps:
[0006] Step 1: Detect the charging circuit and the discharging current to determine whether the state is charging or discharging;
[0007] Step 2: Determine whether the current state is consistent with the previous state;
[0008] Step 3: Determine whether there is a switch in charging state;
[0009] Step 4: Check if the battery level changes.
[0010] By adopting the above technical solution, the jump of battery power can be suppressed, the detection accuracy of battery power can be greatly improved, and the current charging or discharging state can be judged according to the state of the charging circuit and the discharge current.
[0011] Furthermore, based on the battery status in step 2, it is determined whether the current status is consistent with the previous status. If the battery status is determined to be inconsistent with the previous status, the mode and status information are updated, and the original power data is maintained.
[0012] By adopting the above technical solution, when it is determined that the battery status is inconsistent with the previous one, the mode and information are updated, and the power data is not calculated or updated and is retained as it is.
[0013] Further, based on whether the current state of the charging circuit and the discharging current in step 3 is consistent with the previous state, the charging state of the charging circuit is judged whether to switch. The charging state switch can be obtained by calculating the battery power and is divided into switching or not switching.
[0014] By adopting the above technical solution, determining whether the charging state has switched can improve the data accuracy of detecting the battery power.
[0015] Furthermore, when it is determined that the charging state is switched, the battery power level is calculated to determine whether there is a jump, and whether there is a jump is divided into yes and no.
[0016] By adopting the above technical solution, whether there is a switching or not is used to judge whether there is a jump state or not.
[0017] Further, based on whether the transition in step 4 is to no, the switching state is cleared and the battery power is not updated, and the original power data is maintained.
[0018] By adopting the above technical solution, the problem of detecting jumps in battery power is effectively improved.
[0019] Furthermore, if it is determined that the charging state has not been switched, the battery power level 2 is calculated and the battery power data is updated.
[0020] By adopting the above technical solution, normal operation and update of battery power data can be achieved when there is no jump.
[0021] Compared with the prior art, the present invention has the following beneficial effects:
[0022] 1. The measurement method for suppressing battery power calculation jumps caused by charging and discharging can effectively prevent the problem of inaccurate calculation of power jumps caused by different power curves during battery charging and discharging, thereby improving the accuracy of battery power detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the battery charging and discharging curve of the present invention;
[0024] Figure 2 It is a schematic diagram of the measurement method flow of the present invention. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0026] See also Figure 1 and 2, an embodiment of the present invention provides: a measurement method for suppressing battery power calculation jump caused by charging and discharging, comprising the following steps:
[0027] Step 1: Detect the charging circuit and the discharging current to determine whether the state is charging or discharging;
[0028] Step 2: Determine whether the current state is consistent with the previous state;
[0029] Step 3: Determine whether there is a switch in charging state;
[0030] Step 4: Check if the battery level changes.
[0031] Based on the battery status in step 2, determine whether the current status is consistent with the previous status. If the battery status is inconsistent with the previous status, update the mode and update the status information, and keep the original power data;
[0032] Based on whether the current state of the charging circuit and the discharge current in step 3 is consistent with the previous state, it is determined whether the charging state of the charging circuit is switched. The charging state switching can be obtained by calculating the battery power and is divided into switching or not switching;
[0033] To judge whether the charging state has switched, the battery power is calculated to see whether it has jumped or not, and whether it has jumped or not is divided into yes and no;
[0034] Based on whether the step 4 changes to no, the switching state is cleared and the battery power is not updated, and the original power data is maintained;
[0035] If it is determined that the charging state has not been switched, the battery power level 2 is calculated and the battery power data is updated.
[0036] The above can suppress the jump of battery power and greatly improve the detection accuracy of battery power. It judges whether the current state is charging or discharging according to the state of the charging circuit and the discharge current. When the battery state is judged to be inconsistent with the previous state, the mode and information are updated, and the power data is retained without calculating or updating. It can improve the data accuracy of detecting battery power by judging whether the charging state is switched or not. It can effectively improve the problem of battery power jump when there is a switch. When there is no jump, it can run normally and update the battery power data. This method can effectively prevent the problem of inaccurate calculation of power jump due to different power curves during battery charging and discharging, thereby improving the accuracy of battery power detection.
[0037] Working principle: First, detect the current in the charging circuit and the discharging circuit, and judge whether the battery is in the charging state or the discharging state according to the current. Then compare the judged state with the previous state to see if they are consistent. If not, update the mode and status information, and do not calculate and update the power data to keep the original power data information. And judge whether the charging state of the charging circuit is switched according to the current charging or discharging state. If there is a switch, start calculating the battery power to judge whether there is a jump. If there is no jump, clear the switch state mark, do not update the power data to keep the original data. If there is a jump, clear the switch mark and keep the last power data. If there is no switch, the battery power is calculated and the battery power data is updated. During the charging and discharging process of the battery, the calculated power may cause a jump in the calculation result of the power due to the different selected charging and discharging curves. Therefore, this method is adopted. During the discharge to charging process, according to the curve, under the same battery voltage, the power obtained according to the charging curve will drop sharply. At this time, the calculated power is kept unchanged. During the charging process, the battery voltage will gradually increase, and the power obtained according to the charging curve will also increase. When the calculated power is greater than or equal to the previous power, the power data is updated in real time, thereby achieving the purpose of suppressing power jumps. The principle is the same in the process of charging to discharging.
[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
Claims
1. A measurement method for suppressing battery power calculation jumps caused by charging and discharging, characterized in that: The following steps are involved: Step 1: Detect the current in the charging circuit and the discharging circuit to determine whether the state is charging or discharging; Step 2: Determine whether the current state is consistent with the previous state; Step 3: Determine whether there is a switch in charging status; Step 4: Check whether the battery power level has changed. Specifically, determine whether the charging state of the charging circuit has switched based on the current charging or discharging state. If there is a switch, start calculating the battery power to determine whether there is a jump. If there is no jump, clear the switch state flag and do not update the power data to keep the original data. If there is a jump, do not clear the switch flag and keep the last power data. If there is no switch, calculate the battery power and update the battery power data.
2. A measurement method for suppressing battery power calculation jumps caused by charging and discharging according to claim 1, characterized in that: Step 2 determines whether the current battery status is consistent with the previous status. If the battery status is determined to be inconsistent with the previous status, the mode and status information are updated, and the original power data is maintained.
3. A measurement method for suppressing battery power calculation jumps caused by charging and discharging according to claim 1, characterized in that: Step 3 determines whether the charging state of the charging circuit is switched based on whether the current state of step 2 is consistent with the previous state. The charging state switching can be obtained by calculating the battery power and is divided into switching or not switching.
4. A measurement method for suppressing battery power calculation jumps caused by charging and discharging according to claim 3, characterized in that: To determine whether the charging state is switched, the battery power is calculated to determine whether there is a jump, and whether there is a jump is divided into yes and no.
5. A measurement method for suppressing battery power calculation jumps caused by charging and discharging according to claim 3, characterized in that: Based on whether the step 4 is judged to be no, the switching state is cleared and the battery power is not updated, and the original power data is maintained.
6. A measurement method for suppressing battery power calculation jumps caused by charging and discharging according to claim 3, characterized in that: If it is determined that the charging state has not been switched, the battery power level 2 is calculated and the battery power data is updated.