CN105353219A - Step resistor detection system for battery module - Google Patents

Abstract

The invention discloses a battery module stride resistance detection system, relating to a resistance detection system, comprising a control box, a detection platform, a bracket and a detection device, a control box, the control box is arranged on the bracket, and a controller is arranged in the control box ; detection platform, two parallel guide rail sliders are arranged on the detection platform, limit switches are arranged on the guide rails, and a bottom plate is fixedly connected to the slider; detection device, the detection device includes a driving mechanism, a mounting plate and a spring probe, and the driving mechanism is connected to On the bracket, the driving mechanism fixing plate of the driving mechanism is connected to the mounting plate. There are mounting holes on the mounting plate, and the spring probes are inserted and fixed on the mounting holes. Signal connectivity. The battery module is stopped at the detection position through the limit switch, and the signal is sent to the controller, and the detection device is turned on to detect, record and display the step resistance, so as to realize the automatic detection of the step resistance of the battery module.

Description

A battery module step resistance detection system

technical field

The invention relates to a resistance detection system, in particular to a battery module step resistance detection system.

Background technique

The aluminum sheet of the battery module and the cell are connected together by laser welding, and the welding quality is detected by detecting the step resistance between the aluminum sheet and the solder joint of the cell. At present, the detection of step resistance is done manually and measured by a resistance tester. Since the battery module has about 16 welding points, the efficiency of each detection is very low, and the detection data is large, which makes the detection process prone to errors. , affecting the accuracy of the test results.

In the prior art, there is no automatic system for detecting the step resistance of the battery module during the production process of the battery module.

Contents of the invention

In view of the deficiencies of the prior art, the object of the present invention is to provide a battery module step resistance detection system, which can replace the manual measurement of the battery module step resistance and improve the detection efficiency.

To achieve the above object, the present invention adopts the following technical solutions:

A battery module step resistance detection system, comprising:

Supports, including uprights and beams fixedly connected to the uprights;

The detection device includes a mounting plate and a spring probe, and also includes a driving mechanism arranged on the beam and connected to the mounting plate. The driving mechanism is used to drive the mounting plate to move along the height direction of the bracket. The detection points on the group correspond to the installation holes respectively, and the spring probes are inserted and fixed on the installation holes through the probe holders;

The detection platform, the detection platform is located under the crossbeam, and there are two parallel guide rails on the detection platform. The sliders that slide and cooperate with the two guide rails are installed on the two guide rails, and the limit switches that limit the stroke and position of the slider are installed on the guide rails. The limit switch is connected with the switch of the driving mechanism, and the slide block is fixedly connected with a bottom plate which slides back and forth on the guide rail with the slide block.

Preferably, the present invention also includes a control box with a built-in controller, the control box is arranged on the support, the controller communicates with the connection terminal of the spring probe through a wire, and the surface of the control box is provided with a display screen for displaying detection data, and the control box The device is used to receive the detection data of the spring probe and display the detection data on the display screen.

Preferably, the two ends of the diagonal line on the bottom plate are respectively provided with positioning pins that cooperate with the two positioning holes at the bottom of the battery module to fix the battery module.

Preferably, the driving mechanism is an air cylinder, the end of the piston rod of the air cylinder is fixedly connected to the bottom surface of the beam of the bracket, and the cylinder fixing plate of the air cylinder is connected to the mounting plate.

The beneficial effects of the present invention are: the battery module is positioned on the bottom plate, the battery module is stopped at the detection position through the limit switch, and the signal is sent to the controller, and the detection device is turned on to perform stepping resistance of the battery module. Detect, record and display to realize the automatic detection of the battery module step resistance; the spring probe is sensitive and light, maintains good contact with the detection contact and does not easily damage the contact; multiple probes detect at the same time and will detect the data Immediately transmitted to the controller, greatly improving the detection efficiency and accuracy of detection results.

Description of drawings

Fig. 1 is a structural representation of a battery module step resistance detection system of the present invention;

Fig. 2, Fig. 3 are the structural representations of detection station among the present invention;

Fig. 4 is a schematic structural diagram of the monitoring device in the present invention.

Reference signs: 1, detection platform; 11, guide rail; 12, slider; 13, bottom plate; 131, positioning pin; 14, limit switch; 21, base; 22, column; 23, beam; 24, corner code; 3. Detection device; 31. Cylinder; 311. Cylinder fixing plate; 312. Piston rod end; 32. Mounting plate; 33. Spring probe; 34. Probe seat; 35. Terminal block; 36. Wire; 4. Control box; 41. a display screen; 5. a battery module.

detailed description

Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:

As shown in Figure 1, a battery module step resistance detection system includes a detection table 1, a bipod support, a detection device 3 and a control box 4:

The bipod support includes two bases 21, a column 22 fixedly connected to the base 21, and a beam 23 fixedly connected to the column 22 through a corner code 24, and the beam 23 is located above the detection platform 1;

The control box 4 is arranged on the column 22 of the bipod support, the control box 4 is equipped with a controller, and the surface of the control box 4 is provided with a display screen 41 for displaying detection data;

As shown in Fig. 2 and Fig. 3, two parallel guide rails 11 are arranged on the detection platform 1, and a slider 12 slidingly matched with the two guide rails 11 is installed on the two guide rails 11, and the stroke and position of the slider 12 are limited on the guide rail 11. The limit switch 14, the limit switch 14 is connected with the switch signal of the cylinder 31, the slider 12 is fixedly connected with the bottom plate 13 that slides back and forth with the slider 12 on the guide rail 11, and the two ends of the diagonal line on the bottom plate 13 are respectively There are positioning pins 131 that cooperate with the two positioning holes (not shown) at the bottom of the battery module 5 to fix the battery module 5;

As shown in Figure 4, detection device 3, detection device 3 comprises cylinder 31, mounting plate 32 and spring probe 33, and the piston rod end 312 of cylinder 31 is fixedly connected on the crossbeam 23 bottom surfaces of bipod support, and the cylinder of cylinder 31 is fixed. The plate 311 is connected to the mounting plate 32, and the mounting plate 32 is provided with mounting holes (not shown) corresponding to the detection points on the battery module 5 respectively, and the spring probe 33 is inserted and fixed in the mounting hole (not shown) through the probe holder 34 As shown), the spring probe 33 has elasticity, sensitivity and lightness, and can maintain good contact with the contacts and is not easy to damage the contacts. The sensor signal is connected so that the detection data can be uploaded to the controller and recorded in real time.

When the battery module stride resistance detection device provided by the present invention is in operation, the battery module 5 is fixedly placed on the bottom plate 13 through the position matching of the positioning hole (not shown) and the positioning pin 131, and the bottom plate 13 carries the battery module. Group 5 slides on the guide rail 11 with the slider 12 and is blocked by the limit switch 14 after reaching the detection position. At the same time, the switch of the cylinder 31 is activated, and the piston rod of the cylinder 31 is stretched and connected to the mounting plate of the cylinder fixing plate 311 32 is lowered to the detection position, and the spring probes 33 are respectively in contact with the aluminum sheet and the battery cell on the detection point, thereby realizing the detection of the step resistance, and transmitting the detection data to the controller and recording it, and the display on the control box 4 The screen 41 displays the detection data so that the staff can check the detection situation.

The invention can be applied to the quality inspection link in the battery module production line, has low cost and high degree of automation, can effectively improve the detection efficiency, is beneficial to improving the production quality of the battery module, and has the prospect of wide popularization.

Those skilled in the art can make various other corresponding changes and deformations according to the above-described technical solutions and ideas, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims (4)

1. A battery module step resistance detection system, characterized in that, comprising: Supports, including uprights and beams fixedly connected to the uprights; A detection device, the detection device includes a mounting plate and a spring probe, and also includes a driving mechanism arranged on the beam and connected to the mounting plate, the driving mechanism is used to drive the mounting plate to move along the height direction of the bracket, the mounting plate There are installation holes corresponding to the detection points on the battery module respectively, and the spring probes are inserted and fixed on the installation holes through the probe holders; A detection platform, the detection platform is located below the crossbeam, two guide rails parallel to each other are arranged on the detection platform, sliders that slide and cooperate with the two guide rails are installed on the two guide rails, and a limit slider stroke and The position limit switch, the limit switch is connected to the switch of the drive mechanism, and the slide block is fixedly connected with a base plate that slides back and forth on the guide rail with the slide block. 2. The detection system according to claim 1, further comprising a control box with a built-in controller, the control box is arranged on the support, and the controller communicates with the connection terminal of the spring probe via a wire , the surface of the control box is provided with a display screen for displaying detection data, and the controller is used for receiving the detection data of the spring probe and displaying the detection data on the display screen. 3 . The detection system according to claim 1 , wherein two ends of a diagonal line on the bottom plate are respectively provided with positioning pins that cooperate with the two positioning holes at the bottom of the battery module to fix the battery module. 4 . 4. The detection system according to claim 1, wherein the driving mechanism is an air cylinder, the end of the piston rod of the air cylinder is fixedly connected to the bottom surface of the beam of the bracket, and the cylinder fixing plate of the air cylinder is connected to the mounting plate.