Automatic detection device for connection impedance of PACK upper cover assembly

Abstract

The utility model relates to the technical field of new energy battery PACK manufacturing, and discloses an automatic detection device for PACK upper cover assembly connection impedance, which comprises a profiling limiting main body, an inner concave cavity for placing an upper cover assembly is arranged in the profiling limiting main body, two BMS installation positioning pins are arranged in the inner concave cavity, and the two BMS installation positioning pins are connected with the profiling limiting main body. Two pole guiding and limiting grooves are also formed in the inner concave cavity; and a negative pole spring probe is arranged in one pole guiding and limiting groove. According to the utility model, the upper cover assembly is positioned and fixed by using the profiling limiting main body, manual pressing of a meter pen for detection is replaced, the influence of the change of a contact point on a measurement result in the manual pressing process is reduced, and the measurement point location is unified.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy battery PACK manufacturing, and particularly relates to an automatic detection device for the connection impedance of a PACK upper cover assembly. Background Technique

[0002] With the country's support and promotion of the development of environmental protection new energy, actively developing new energy vehicles is the future development direction of the automotive industry, and lithium battery technology is one of the key technologies for the development of electric vehicles.

[0003] In the production process of square lithium battery PACKs, the control of the AC internal resistance of the battery pack is the key point. Among them, in the production process of square lithium battery PACKs, the AC internal resistance is a key product characteristic that needs to be controlled. A too large AC internal resistance will affect the power consumption and service life of the PACK, and even affect the battery safety. At present, when detecting the bolt connection impedance of the upper cover assembly, manual use of a probe to press down for detection has low operation efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic detection device for the connection impedance of a PACK upper cover assembly, which is used to detect the impedance between the total negative pole column (detection point "-") and the connection of the module positive pole (detection point "+"), can reduce the manual measurement man-hours, and at the same time, can further improve the bolt connection impedance test efficiency and reduce the personnel configuration when using this device.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an automatic detection device for the connection impedance of a PACK upper cover assembly, including a profiling limit main body, an inner concave cavity for placing the upper cover assembly is arranged in the profiling limit main body, two BMS installation positioning pins are arranged in the inner concave cavity, and two pole column guiding limit grooves are also arranged in the inner concave cavity, and a negative pole column spring probe is arranged in one of the pole column guiding limit grooves.

[0006] The further setting of the utility model is: grooves are arranged on the profiling limit main body on both sides of the inner concave cavity.

[0007] The further setting of the utility model is: positioning holes are arranged on the profiling limit main body.

[0008] The further setting of the utility model is: the number of the positioning holes is 4.

[0009] The beneficial effect of the utility model is:

[0010] 1. The utility model positions and installs the upper cover assembly through the concave chamber on the profiling limit main body and the BMS installation positioning pin. A negative pole column spring probe is installed in one of the pole column guiding limit grooves, and the negative wire harness of the AC internal resistance tester is connected. One of the BMS installation positioning pins is connected to the positive wire harness of the AC internal resistance tester. After assembling the BMS connection bolts, the measurement of the connection impedance of the bolts and copper bars is automatically completed.

[0011] 2. The utility model positions and fixes the upper cover assembly by using the profiling limit main body, replacing the manual pressing of the test pen for detection, reducing the influence of the change of the contact point during the manual pressing process on the measurement result, and unifying the measurement points. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of the profiling limit main body of the present utility model.

[0014] Figure 2 It is a front view structural diagram of the profiling limit main body of the present utility model.

[0015] Figure 3 It is a schematic assembly structural diagram of the profiling limit main body and the upper cover assembly of the present utility model.

[0016] In the figure, 1. Profiling limit main body; 11. Concave chamber; 12. BMS installation positioning pin; 13. Pole column guiding limit groove; 131. Negative pole column spring probe; 14. Groove; 15. Positioning hole; 2. Upper cover assembly. Detailed Embodiment

[0017] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0018] An automatic detection device for the connection impedance of a PACK upper cover assembly, including a profiling and limiting main body 1, an inner concave chamber 11 for placing the upper cover assembly 2 is arranged inside the profiling and limiting main body 1, two BMS installation positioning pins 12BMS are arranged inside the inner concave chamber 11, and two pole column guiding and limiting grooves 13 are further arranged inside the inner concave chamber 11, and a negative pole column spring probe 131 is arranged inside one of the pole column guiding and limiting grooves 13.

[0019] A further setting of the present utility model is that grooves 14 are opened on the profiling and limiting main body 1 on both sides of the inner concave chamber 11.

[0020] A further setting of the present utility model is that positioning holes 15 are opened on the profiling and limiting main body 1.

[0021] A further setting of the present utility model is that the number of the positioning holes 15 is set to 4.

[0022] The installation and automatic detection process of the present utility model is as follows:

[0023] Step 1: Place the upper cover assembly 2 with a prefabricated BMS into the inner concave chamber 11 on the profiling and limiting main body 1.

[0024] Step 2: Install the copper bar connection bolt.

[0025] Step 3: Install the negative pole column spring probe 131 inside one of the pole column guiding and limiting grooves 13, connect the negative wire harness of the AC internal resistance tester, connect one of the BMS installation positioning pins 12BMS to the positive wire harness of the AC internal resistance tester, read the internal resistance displayed by the AC internal resistance tester and make a determination.

[0026] Step 4: Complete the assembly and testing.

[0027] The present utility model positions and installs the upper cover assembly 2 through the inner concave chamber 11 and the BMS installation positioning pins 12BMS on the profiling and limiting main body 1. The negative pole column spring probe 131 is installed inside one of the pole column guiding and limiting grooves 13, and the negative wire harness of the AC internal resistance tester is connected. One of the BMS installation positioning pins 12BMS is connected to the positive wire harness of the AC internal resistance tester. After assembling the BMS connection bolt, the measurement of the connection impedance of the bolt and the copper bar is automatically completed.

[0028] The present utility model positions and fixes the upper cover assembly 2 by using the profiling and limiting main body 1, replaces the manual pressing of the pen tip for detection, reduces the influence of the change of the contact point during the manual pressing process on the measurement result, and unifies the measurement points.

Claims

1. An automatic detection device for the connection impedance of a PACK upper cover assembly, characterized in that: It includes a profiling limit main body (1), an inner concave chamber (11) for placing the upper cover assembly (2) is arranged in the profiling limit main body (1), two BMS installation positioning pins (12) are arranged in the inner concave chamber (11), and two pole column guiding and limiting grooves (13) are also arranged in the inner concave chamber (11), and a negative pole column spring probe (131) is arranged in one of the pole column guiding and limiting grooves (13).

2. The automatic detection device for the connection impedance of a PACK upper cover assembly according to claim 1, wherein: Grooves (14) are formed on the profiling limit main body (1) on both sides of the inner concave chamber (11).

3. The automatic detection device for the connection impedance of a PACK upper cover assembly according to claim 1, wherein: Positioning holes (15) are formed on the profiling limit main body (1).

4. An automatic detection device for the connection impedance of a PACK upper cover assembly according to claim 3, characterized in that: The number of the positioning holes (15) is set to be 4.

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