CN115902673A - Detection method of battery module total voltage and single battery voltage - Google Patents

Abstract

The invention discloses a method for detecting the total voltage of a battery module and the voltage of a single battery, which includes the following steps: setting up a connected detection terminal and an analysis terminal; connecting an off-line battery module to the detection terminal; The total voltage of the module and the voltage of a single battery are transmitted to the analysis terminal; the information label is scanned, and the material code information is transmitted to the analysis terminal; the analysis terminal calls the standard range of the total voltage and the standard range of the single battery according to the material code information; if the battery module If the total voltage of the battery exceeds the standard range of the total voltage, or the voltage of a single battery exceeds the standard range of the single battery, the analysis end determines that the battery module is unqualified; if the total voltage of the battery module is within the standard range of the total voltage, and the voltage of the single battery is within the If the battery standard range is exceeded, the analysis end determines that the battery module is qualified. The application improves detection efficiency, reduces the risk of outflow of unqualified products, and reduces quality accidents and economic losses.

Description

Detection method of battery module total voltage and single battery voltage

technical field

The invention relates to the technical field of battery module detection, and in particular, mainly relates to a method for detecting the total voltage of a battery module and the voltage of a single battery.

Background technique

The battery module is the core component of the energy storage product. After the battery module is produced, it is necessary to check the correctness of the total voltage of the battery module and the series-parallel connection of the internal batteries. In the prior art, currently workers mainly test the total voltage of a certain type of battery module with a multimeter or a voltmeter, and then manually judge the correctness of the total voltage of the battery module and the series-parallel connection of the internal batteries. In actual operation, the following problems will exist in the battery module through manual inspection:

1. Different types of battery modules use different testing standards. When switching between different types of battery modules, manual judgment is easy to use the wrong standard, easy to record errors, low efficiency, and even cause quality accidents;

2. When the total voltage of the battery module is within the specified range, if the voltage of one or several batteries in the battery module is too high or too low, the voltage of a single battery cannot be manually identified and judged, which may easily cause defective products to flow out, resulting in Quality accidents and economic losses.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a method for detecting the total voltage of a battery module and the voltage of a single battery.

A method for detecting the total voltage of a battery module and the voltage of a single battery disclosed in the present invention includes:

Set up a connected detection terminal and analysis terminal; wherein, the detection terminal is integrated with the voltage monitoring unit of the battery management system, and the analysis terminal stores the standard range of the total voltage and the standard range of the single battery;

The off-line battery module is connected to the detection terminal; wherein, the surface of the battery module is attached with an information label, and the information label stores material coding information;

The detection terminal collects the total voltage of the battery module and the voltage of a single battery and transmits them to the analysis terminal;

Scan the information label and pass the material coding information to the analysis terminal;

The analysis terminal calls the standard range of the total voltage and the standard range of the single battery according to the material coding information;

The analysis end compares and analyzes the total voltage of the battery module collected by the detection end with the standard range of the total voltage, and compares and analyzes the single battery voltage collected by the detection end with the standard range of the single battery;

If the total voltage of the battery module exceeds the standard range of the total voltage, or the voltage of a single battery exceeds the standard range of the single battery, the analysis end determines that the battery module is unqualified; if the total voltage of the battery module is within the standard range of the total voltage, and the single battery If the voltage is within the standard range of a single battery, the analysis end determines that the battery module is qualified.

According to an embodiment of the present invention, the information tag also stores identity information;

When scanning the battery label, the material coding information and identity information are transmitted to the analysis terminal synchronously;

The analysis end determines that the battery module is unqualified and marks the battery module according to the identity information; the analysis end determines that the battery module is qualified and marks the battery module according to the identity information.

According to one embodiment of the present invention, it also includes the following steps:

Qualified battery modules flow into the next process, and unqualified battery modules are repaired.

According to one embodiment of the present invention, it also includes the following steps:

The analysis terminal conducts retrospective query of process information based on identity information.

According to an embodiment of the present invention, the standard range of the total voltage includes the lowest voltage of the battery module and the highest voltage of the battery module; the standard range of the single battery includes the lowest voltage of the single battery and the highest voltage of the elevator battery.

According to an embodiment of the present invention, the analysis end is an MES system.

According to an embodiment of the present invention, the analysis end determines that the battery module is unqualified, and sends out a warning message.

According to an embodiment of the present invention, the warning information is display information of the qualified status of the battery module and the single battery.

According to an embodiment of the present invention, the analysis terminal stores the warning information.

The beneficial effect of this application is that: the voltage monitoring unit of the battery management system used for energy storage products at the back end is used for the detection of the total voltage of the front-end off-line battery module and the voltage of the single battery, and standardizes the detection standard to avoid It eliminates the problems of human recording errors and the inability to detect single batteries manually, thereby improving the detection efficiency, reducing the risk of outflow of substandard products, and reducing quality accidents and economic losses.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

Fig. 1 is the flowchart of the method for detecting the total voltage of the battery module and the voltage of the single battery in the embodiment;

Fig. 2 is a schematic diagram of the connection of the detection terminal, the analysis terminal and the battery module in the embodiment.

Detailed ways

A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, for the sake of simplifying the drawings, some commonly used structures and components are shown in a simple schematic manner in the drawings.

It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back... are only used to explain the relative positional relationship between the components in a certain posture as shown in the drawings, Sports conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and do not refer to the meaning of order or sequence, nor are they used to limit the present invention, but are only for the purpose of distinguishing the following The same technical terms only describe elements or operations, and should not be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Referring to Fig. 1, Fig. 1 is a flow chart of the method for detecting the total voltage of the battery module and the voltage of the single battery in the embodiment. The method for detecting the total voltage of the battery module and the voltage of the single battery in this embodiment includes the following steps:

S1, set up a connected detection terminal and analysis terminal; wherein, the detection terminal is integrated with the voltage monitoring unit of the battery management system, and the analysis terminal stores the standard range of the total voltage and the standard range of the single battery;

S2, the off-line battery module is connected to the detection terminal; wherein, the surface of the battery module is attached with an information label, and the information label stores material coding information;

S3, the detection terminal collects the total voltage of the battery module and the voltage of a single battery and transmits them to the analysis terminal;

S4, scan the information label, and transmit the material coding information to the analysis terminal;

S5, the analysis end calls the standard range of the total voltage and the standard range of the single battery according to the material coding information;

S6, the analysis end compares and analyzes the total voltage of the battery module collected by the detection end with the standard range of the total voltage, and compares and analyzes the single battery voltage collected by the detection end with the standard range of the single battery;

S7, if the total voltage of the battery module exceeds the standard range of the total voltage, or the voltage of a single battery exceeds the standard range of the single battery, the analysis end determines that the battery module is unqualified; if the total voltage of the battery module is within the standard range of the total voltage, and If the voltage of a single battery is within the standard range of a single battery, the analysis end determines that the battery module is qualified.

The voltage monitoring unit of the battery management system used at the back end for energy storage products is used to detect the total voltage of the front-end off-line battery module and the voltage of the single battery, and standardize the detection standards to avoid human-made recording errors and artificial inability Detect the problems of single batteries, thereby improving the detection efficiency, reducing the risk of outflow of unqualified products, and reducing quality accidents and economic losses.

Referring again to FIG. 2 , FIG. 2 is a schematic diagram of connection of the detection terminal, the analysis terminal and the battery module in the embodiment. The detection terminal 1 in this embodiment includes a carrier board 11, a control board 12, and a connecting wire 13, wherein the control board 12 is a PCB board, and a voltage monitoring unit of a battery management system BMS is integrated therein, and the voltage monitoring unit of the battery management system Existing units can be used, and details will not be repeated here. The connection wire 13 is used to electrically connect the control board 12 with the battery module 2 and the analysis terminal 3 respectively. In this embodiment, the analysis terminal 3 is an MES system, specifically operated in an industrial computer. MES is a production process execution system of a manufacturing enterprise, and it is a set of production information management system oriented to the execution layer of the workshop of the manufacturing enterprise. In this embodiment, the content of the present invention can be realized by using the existing MES.

In step S1, a connected detection terminal 1 and an analysis terminal 3 are set up, specifically, the two ends of the connection line 13 are respectively connected to the computer interfaces of the control board 12 and the analysis terminal 3 to realize information exchange. In this embodiment, the standard range of the total voltage includes the lowest voltage of the battery module and the highest voltage of the battery module; the standard range of the single battery includes the lowest voltage of the single battery and the highest voltage of the elevator battery. When the detected total voltage of the battery module is between the lowest voltage of the battery module and the highest voltage of the battery module, it means that the battery module is normal. Similarly, when the detected voltage of the single battery is between the lowest voltage of the single battery and the highest voltage of the elevator battery, it means that the single battery is normal.

In step S2, the off-line battery module 2 is connected to the detection terminal 1 through the connecting wire 13 to connect the interface of the battery module 2 and the interface of the control board 12 to realize information exchange. Wherein, the information label is a barcode or a two-dimensional code label, which can store information and read it by scanning.

In step S3 , when the detection terminal 1 is connected to the battery module 2 , the voltage monitoring unit of the BMS stored in the control board 12 will read and detect the battery module 2 .

Afterwards, in step S4, the information label is scanned, and the material code information is transmitted to the analysis terminal 3 .

In step S5, the MES of the analysis terminal 3 will obtain the model of the battery module 2 to be tested according to the material code information, so as to correspond to the standard range of the total voltage and the standard range of the single battery required by the battery module 2 of this model.

Afterwards, comparative analysis is carried out in step S6. In step S7, only when the total voltage of the battery module 2 and the voltage of the single battery are within the required standard range of the total voltage and the standard range of the single battery, can the battery module be judged. 2 is qualified, otherwise it is judged as unqualified.

Preferably, the information tag also stores identity information. In step S4, when the battery label is scanned, the material coding information and identity information are transmitted to the analysis terminal synchronously. In step S7, the analysis end determines that the battery module is unqualified and marks the battery module according to the identity information; the analysis end determines that the battery module is qualified and marks the battery module according to the identity information.

Preferably, the method for detecting the total voltage of a battery module and the voltage of a single battery in this embodiment further includes the following steps: S8, qualified battery modules flow into the next process, and unqualified battery modules are repaired. S9, the analysis end performs retroactive query of the process information according to the identity information. In this way, the unique identity information ID of the battery module under test is given through the information label, so that the identity information ID and the test result information of the battery module are one-to-one, so as to facilitate subsequent retrospective inquiries and realize accurate product process management.

In this embodiment, the analysis terminal determines that the battery module is unqualified, and sends out a warning message. Wherein, the warning information is the qualified state display information of the battery module and the single battery. This enables the inspector to directly observe the result status of the detected battery module and perform corresponding processing. In specific applications, it is displayed on the display screen of the industrial computer.

In this embodiment, the analysis terminal stores the warning information. In order to facilitate subsequent historical query of warning information.

To sum up, the method for detecting the total voltage of the battery module and the voltage of the single battery of the present invention is to apply the voltage monitoring unit of the BMS to the detection of the total voltage of the offline battery module and the voltage of the single battery, and integrate it with the MES system Combined, targeted to avoid the problem of incomplete detection caused by manual detection of the total voltage of the battery module and the voltage of the single battery, and the incomplete detection of the voltage of the single battery, thereby strengthening the process quality management capability of the battery module product , improve the detection efficiency, reduce the risk of outflow of substandard products, and realize process traceability, which improves customer satisfaction and economic benefits.

The above descriptions are only embodiments of the present invention, and are not intended to limit the present invention. Various modifications and variations of the present invention will occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims (9)

1. A battery module total voltage and a single cell voltage detection method, characterized in that, comprising the following steps: A connected detection terminal and an analysis terminal are set up; wherein, the detection terminal is integrated with a voltage monitoring unit of the battery management system, and the analysis terminal stores a standard range of the total voltage and a standard range of a single battery; The off-line battery module is connected to the detection terminal; wherein, an information label is attached to the surface of the battery module, and the information label stores material coding information; The detection terminal collects the total voltage of the battery module and the voltage of a single battery and transmits them to the analysis terminal; scanning the information label, and transmitting the material coding information to the analysis terminal; The analysis terminal invokes the standard range of the total voltage and the standard range of the single battery according to the material coding information; The analysis terminal compares and analyzes the total voltage of the battery module collected by the detection terminal with the standard range of the total voltage, and compares and analyzes the single battery voltage collected by the detection terminal with the standard range of the single battery ; If the total voltage of the battery module exceeds the standard range of the total voltage, or the voltage of the single battery exceeds the standard range of the single battery, the analysis terminal determines that the battery module is unqualified; if the battery If the total voltage of the module is within the standard range of the total voltage, and the voltage of the single battery is within the standard range of the single battery, then the analyzing end determines that the battery module is qualified. 2. The method for detecting the total voltage of the battery module and the voltage of the single battery according to claim 1, wherein the information label also stores identity information; When scanning the battery label, synchronously transmit the material coding information and the identity information to the analysis terminal; The analysis end determines that the battery module is unqualified and marks the battery module according to the identity information; the analysis end determines that the battery module is qualified and marks the battery module according to the identity information . 3. The method for detecting the total voltage of the battery module and the voltage of the single battery according to claim 2, further comprising the following steps: The qualified battery modules flow into the next process, and the unqualified battery modules are repaired. 4. The method for detecting the total voltage of the battery module and the voltage of the single battery according to claim 3, further comprising the following steps: The analysis terminal performs retroactive query of process information according to the identity information. 5. The method for detecting the total voltage of the battery module and the voltage of the single battery according to claim 1, wherein the standard range of the total voltage includes the lowest voltage of the battery module and the highest voltage of the battery module; The standard range includes the minimum voltage of a single battery and the maximum voltage of an elevator battery. 6. The method for detecting the total voltage of a battery module and the voltage of a single battery according to claim 1, wherein the analysis terminal is an MES system. 7 . The method for detecting the total voltage of a battery module and the voltage of a single battery according to claim 1 , wherein the analysis terminal determines that the battery module is unqualified and sends a warning message. 8 . The method for detecting the total voltage of a battery module and the voltage of a single battery according to claim 7 , wherein the warning information is display information of the qualified status of the battery module and the single battery. 9. The method for detecting the total voltage of a battery module and the voltage of a single battery according to claim 7, wherein the analysis terminal stores warning information.

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