CN218727869U - Battery module cycle life expansion detection device - Google Patents

Abstract

The utility model provides a battery module cycle life expansion detection device, which comprises a detection device body, on which a battery module to be detected is installed; a detection unit is arranged in the detection device body, and the detection unit is used to detect the The utility model has beneficial effects: this solution fixes the module in a real way of fixing the module, and at the same time is compatible with the installation and fixing of the liquid cold plate, and can test and analyze the expansion parameters of the module in real time under the real working state of the module. Record.

Description

A battery module cycle life expansion detection device

technical field

The utility model belongs to the technical field of detection and application of lithium-ion power batteries, in particular to a detection device for cycle life expansion of a battery module.

Background technique

At present, in the existing technology, most of the expansion parameters are measured by mechanical contact. This method is greatly affected by the flatness of the contact surface. Since the expansion plane of the module has a certain radian, there is a certain error in the detection accuracy, and this method The module needs to be clamped, and a certain clamping force is applied to the module, which cannot intuitively reflect the real operating status of the module.

Utility model content

In view of this, the utility model aims to provide a battery module cycle life expansion detection device to at least solve at least one problem pointed out in the background art.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A battery module cycle life expansion detection device, comprising:

The detection device body, the battery module to be detected is installed on the detection device body;

A detection unit is arranged in the detection device body, and the detection unit is used to detect the expansion data of the battery module to be detected.

Further, the detection device body is provided with a mounting structure for mounting the detection unit on the side facing the battery module to be detected, and the detection unit is movably connected to the detection device body through the mounting structure.

Further, the installation structure includes a slide rail, and the detection unit adjusts its position relative to the detection device body through the slide rail.

Further, the detection unit includes a distance sensor, and there is no less than one distance sensor, and the distance sensor detects the distance between the outer wall of the battery module and the side wall of the detection device body.

Further, the distance sensor transmits the acquired information to the data acquisition module, and the data acquisition module summarizes the information collected by multiple distance sensors, and regularly transmits the information to the data processing and analysis module through CAN communication.

Further, the data processing and analysis module performs overall calculation and analysis on the data transmitted by the data acquisition module, and then transmits it to the display module or test equipment through the communication module;

The communication module transmits data to the display module and test equipment in real time through CAN communication.

Furthermore, the display module has built-in host computer software for real-time data display and data recording functions, and the period and category of recorded data can be set through touch screen input.

Further, the test equipment periodically records the data and the electrical performance test data in the same file by receiving the data sent by the communication module, so as to ensure the time consistency of the data.

Compared with the prior art, a battery module cycle life expansion detection device described in the utility model has the following beneficial effects:

(1) The battery module cycle life expansion detection device described in the utility model fixes the module in a real fixing way, and is compatible with the installation and fixing of the liquid cold plate, and can monitor the battery in real time under the real working state of the module. Module expansion parameters are tested and recorded;

(2) The battery module cycle life expansion detection device described in the utility model detects expansion parameters through a laser sensor, effectively avoiding the influence of data differences caused by contact surface flatness and manual detection data deviation.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a schematic diagram of a front view of a battery module cycle life expansion detection device described in an embodiment of the present invention;

Fig. 2 is a schematic diagram of a top view of a battery module cycle life expansion detection device described in an embodiment of the present invention;

Fig. 3 is a schematic diagram of control logic of a battery module cycle life expansion detection device according to an embodiment of the present invention.

Explanation of reference signs:

1-sensor; 2-data acquisition module; 3-data processing and analysis module; 4-communication module; 5-battery module.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

The utility model relates to a battery module cycle life expansion detection device, and the battery module 5 is fixed in the detection device in a practically applied fixing way through the fixed point inherent in the design. The detection device is compatible with the fixed liquid cold plate, which is used to simulate the scene of the real cycle life of the module. Each of the four planes of the detection device is designed with a special track, and the laser distance sensor 1 arranged on the track can be moved conveniently to detect the distance of the entire plane corresponding to the fixed point of the module. The detection device is designed with a data processing and storage device, which can detect and record multiple data at the same time, and can display the detection position value in real time through the host computer software. It has CAN communication sending and receiving capabilities, and the detection cycle and data sending cycle can be set through the host computer software. .

The top view of the detection device equipped with modules and liquid cooling plates is shown in Figure 1;

The side view of the EH side of the detection device is shown in Figure 2;

The battery module 5 is fixed on the detection device through the four fixed points A, B, C, and D of the module. If the number of fixed points of the module exceeds the number shown in the schematic diagram, it can be fixed according to the actual assembly and fixed points. The module A liquid cold plate can be arranged at the bottom, and whether the liquid cold plate is used or not can be determined according to requirements. The length and width direction of the module can be freely defined, that is, if AB and CD are defined as the width direction, then AC and BD are the width direction.

The four planes (EF, FG, GH, HE) where the detection device shell is located are designed with slide rails, which can move and fix the position of the laser sensor 1 arbitrarily. Through the previous test design, it is convenient to detect the predetermined module Position expansion parameters, multiple sensors 1 can be arranged on a single plane, and the sensor 1 transmits the collected data to the data processor through the signal line. The data processor has the ability to summarize data, analyze and process data, and record data. The data processor can communicate through CAN The data information is transmitted to the test equipment or other collection terminals by means of a method.

Through the independently designed upper computer software, the parameters of the data processor can be designed, such as data detection cycle, data recording cycle, data transmission cycle and other important parameters. The test equipment can periodically record the expansion data and the electrical performance test data in the same file by receiving the expansion data sent by the data processor, which can ensure the consistency of the data time and provide the accuracy and consistency of the later data analysis. Guarantee provided.

The detection device is equipped with high-voltage input and output interface plug-ins. The positive and negative poles of the module are connected to the positive and negative plug-ins in the detection device through the power line, and the outside of the detection device is connected to the positive and negative output of the test equipment through plug-ins. Ensure that the module performs the charge-discharge cycle test normally.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention The scope of the technical solution shall be included in the scope of the claims and description of the present utility model.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (8)

1. A battery module cycle life expansion detection device, characterized in that it comprises: The detection device body, the battery module (5) to be detected is installed on the detection device body; A detection unit is arranged in the detection device body, and the detection unit is used to detect the expansion data of the battery module (5) to be detected. 2. A battery module cycle life expansion detection device according to claim 1, characterized in that: the detection device body is provided with a mounting structure for installing a detection unit on the side facing the battery module (5) to be detected, and the detection The unit is movably connected with the detection device body through the installation structure. 3 . The battery module cycle life expansion detection device according to claim 2 , wherein the installation structure includes a slide rail, and the detection unit adjusts its position relative to the detection device body through the slide rail. 4 . 4. A battery module cycle life expansion detection device according to claim 1, characterized in that the detection unit includes a distance sensor (1), and the distance sensor (1) is provided with no less than one, and the distance sensor ( 1) Detect the distance between the outer wall of the battery module (5) and the side wall of the detection device body. 5. A battery module cycle life expansion detection device according to claim 4, characterized in that: the distance sensor (1) transmits the acquired information to the data acquisition module (2), and the data acquisition module (2) pairs multiple The information collected by the distance sensors (1) is summarized, and is regularly transmitted to the data processing and analysis module (3) through CAN communication. 6. A battery module cycle life expansion detection device according to claim 5, characterized in that: the data processing and analysis module (3) performs overall calculation and analysis on the data transmitted by the data acquisition module (2), and then passes The communication module (4) is passed to the display module or test equipment; The communication module (4) transmits the data to the display module and the test equipment in real time through CAN communication. 7. A battery module cycle life expansion detection device according to claim 6, characterized in that: the display module has a built-in host computer software for real-time display and record data, and the record data is set through touch screen input cycle and category. 8. A battery module cycle life expansion detection device according to claim 7, characterized in that the test equipment periodically records the data and electrical performance test data in the same In the file, the consistency of data time is guaranteed.

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