TWM620602U - Battery health detection module - Google Patents

Abstract

來算出電流估算值(Iest)，最後再讓電流估算值(Iest)及實際電流值(I)對時間進行積分，即可完成電池健康度的計算，又該電池健康度檢測模組係包含用於量測電池電流的量測單元、量測出的電流查詢對應電壓的表格單元以及利用量測出之電流及對應之電壓計算出電池健康度的計算單元。 A battery health detection method is to first detect the current of the battery and query the voltage-depth of discharge table according to the current value to find the corresponding voltage, and then according to the relational expression

To calculate the estimated current value (Iest), and finally integrate the estimated current value (Iest) and the actual current value (I) over time to complete the calculation of battery health, and the battery health detection module includes The measurement unit that measures the battery current, the table unit that queries the corresponding voltage for the measured current, and the calculation unit that uses the measured current and the corresponding voltage to calculate the battery health.

Description

Battery health detection module

This creation is about a detection module; more specifically, it is about a battery health detection module.

The State of Health (SOH) is a method for estimating the ratio of the total dischargeable power of the battery to the available capacity of the new factory battery. The State of Health (SOH) will reflect the overall performance of the battery and under certain conditions. The parameter of the release of electric energy refers to the ratio of the total discharged power of the battery to the available capacity of the new factory battery under certain conditions. However, as the battery is used for a long time, there will be many unrecoverable physical and chemical factors that cause the battery to age. The health of the battery drops.

At present, the detection method of battery state of health (State of Health; SOH) is to establish a graph of battery internal resistance, temperature, and battery state of charge and battery state of health (State of Health; SOH), and measure the internal resistance of the battery. Look at the chart again to know the state of health (SOH) of the battery. However, the process of establishing a chart of various factors and the state of health (SOH) requires a lot of experimental data to support, which means that a lot of equipment is needed. ,Time Time and manpower to collect data, and make preparations in advance to consume a lot of costs.

In view of this, the applicant in this case conducted in-depth discussions on the aforementioned deficiencies based on his years of research and development experience in related fields, and actively sought solutions based on the aforementioned needs. After a long period of hard research and multiple tests, he finally completed the creation.

The main purpose of this creation is to provide a module and method that can quickly and at low cost to know the battery health.

In order to achieve the above-mentioned purpose, a battery health detection method is created. The method includes the following steps:

A. Measurement steps: respectively measure the current of the normal battery and obtain its current Ia, and measure the current of the battery to be tested and obtain its current Ib.

B. Table lookup steps: query the voltage-depth of discharge table of the normal battery and obtain its voltage Va, and then query the voltage-depth of discharge table of the battery to be tested and obtain its voltage Vb.

，取得估算電流值。 C. Current calculation steps: According to the relationship:

To obtain the estimated current value.

，對時間做積分以取得電池健康狀態(State of Health；SOH)。 D. Integration step: the estimated current value (Iest) and the actual current value (I) according to the relationship:

, Integrate time to get the battery health status (State of Health; SOH).

I also created a battery health detection module, which includes a measurement unit, a table unit, and a calculation unit.

The measuring unit is used to measure the current of the battery.

The table unit records the voltage corresponding to the battery current.

，取得估算電流值，最後將電流 估算值(Iest)及實際電流值(I)根據關係式：

，對時間做積分已取得電池健康狀態(State of Health；SOH)。 The calculation unit is stored in a device with information processing capabilities, and the calculation unit is electrically connected to the measurement unit and the table unit, and the measurement unit compares the current measured by the measurement unit to the table unit. The corresponding voltage, and then according to the relationship

, Get the estimated current value, and finally calculate the estimated current value (Iest) and the actual current value (I) according to the relationship:

, Integrating time has obtained the battery health status (State of Health; SOH).

1: Battery health detection method

11: Measurement steps

12: Look-up steps

13: Current calculation steps

14: Integration step

2: Battery health detection module

21: Measuring unit

22: table cell

23: Computing unit

Figure 1: Schematic diagram of the battery health detection method of the original creation; Figure 2: Schematic diagram of the calculation of the battery health detection of the original creation; Figure 3: Schematic diagram of the battery health detection module of the original creation.

In order to have a more detailed understanding of the purpose, effects, features, and structure of this creation, a preferred embodiment is given below in conjunction with the drawings.

First, please refer to Figure 1 and Figure 2. Figure 1 is a schematic flow diagram of the creative battery health detection method, and Figure 2 is a schematic diagram of the calculation of the creative battery health detection.

The battery health detection method 1 of this creation includes the following steps:

A. Measurement step 11: Use a current measuring instrument to measure the current of the normal battery and obtain its current Ia, and measure the current of the battery to be tested and obtain its current Ib.

B. Table look-up step 12: According to the current Ia detected in the above measurement step 11, query the voltage-depth of discharge table of the normal battery, and find the corresponding voltage to obtain its voltage Va, and then follow the above measurement steps The current Ib measured in 11 is used to query the voltage-depth of discharge table of the battery to be tested, and find the corresponding voltage to obtain its voltage Vb.

，取得電流估算值(Iest)，其中，關係式中的V代表著電池的理論電壓值。 C. Current calculation step 13: The current and voltage values taken in the above measurement step 11 and table look-up step 12 are based on the relationship:

, Get the current estimated value (Iest), where V in the relational expression represents the theoretical voltage value of the battery.

，對時間做積分已取得電池健康狀態(State of Health；SOH)。 D. Integration step 14: The estimated current value (Iest) and the actual current value (I) calculated in the above step C are based on the relationship:

, Integrating time has obtained the battery health status (State of Health; SOH).

Please refer to Figure 3 for continuation. Figure 3 is a schematic diagram of the creative battery health detection module.

In addition, the battery health detection module 2 is created, which includes a measurement unit 21, a table unit 22, and a calculation unit 23.

The measuring unit 21 is used to measure the current of the battery, and the measuring unit 21 is a current measuring instrument.

The table unit 22 records the voltage corresponding to the battery current.

，取得估算電流值，最後將電流估算值(Iest)及實際電流值(I)根據關係式：

，對時間做積分已取得電池健康狀態(State of Health；SOH)。 The calculation unit 23 is stored in a device with information processing capabilities, and the calculation unit 23 is electrically connected to the measurement unit 21 and the table unit 22, and the measurement unit 23 measures the measurement unit 21 The current compares table unit 22 to find the corresponding voltage, and then according to the relational formula

, Get the estimated current value, and finally calculate the estimated current value (Iest) and the actual current value (I) according to the relationship:

, Integrating time has obtained the battery health status (State of Health; SOH).

Based on the above, the advantage of this creative battery health detection method is that as long as the current is measured and the voltage-depth of discharge table is added, the calculation formula can be used to derive the battery health. Compared with the previous measurement of battery internal resistance, this The creation obviously will be much faster than before in the detection and judgment of battery health.

Therefore, this creation has excellent progress and practicality among similar products. At the same time, after searching domestic and foreign technical documents about this kind of structure, it is indeed not found that the same or similar structure exists before the application of this case. Therefore, this case The patent requirements of "creativeness", "applicability to industry" and "progressiveness" should have been met, and an application should be filed in accordance with the law.

However, the above are only the preferred embodiments of this creation, and any other equivalent structural changes made by applying this creation specification and the scope of patent application should be included in the scope of patent application of this creation.

2: Battery health detection module

21: Measuring unit

22: table cell

23: Computing unit

Claims (2)

A battery health detection module includes a measurement unit, a table unit, and a calculation unit; the measurement unit is used to measure the current of the battery; the table unit records the voltage corresponding to the battery current; The calculation unit is stored in a device with information processing capability, and the calculation unit is electrically connected to the measurement unit and the table unit, and the measurement unit compares the current measured by the measurement unit to the table unit to find out Corresponding voltage, and then according to the relationship

, Get the estimated current value, and finally calculate the estimated current value (Iest) and the actual current value (I) according to the relationship:

, Integrating time has obtained the battery health status (State of Health; SOH). The battery health detection module according to claim 1, wherein the measuring unit is a current measuring instrument.

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