Soft package battery test fixture

Abstract

The utility model discloses a soft package battery test fixture, which comprises a device main body and a device upper cover, the device upper cover is detachably connected to the device main body, the device main body is provided with a test cavity, a plurality of grooves for accommodating pole pieces are arranged in the test cavity at intervals, each groove can accommodate the pole pieces with different sizes, and the device upper cover is detachably connected to the device main body. In-cavity pressing blocks used for fixing the tabs are further arranged in the testing cavity, each in-cavity pressing block is arranged corresponding to the position of one groove, a plurality of internal and external connecting guide pieces are arranged at the two ends of the device body, and each internal and external connecting guide piece is electrically connected with one in-cavity pressing block. According to the utility model, the plurality of grooves for accommodating the pole pieces are arranged in the test cavity at intervals, the sizes of the grooves are different, and the grooves can accommodate the pole pieces with different sizes, so that the test can be carried out according to the pole pieces with different sizes and types. The in-cavity pressing block is used for fixing the pole lug on the pole piece.

Description

Technical Field

[0001] This utility model relates to the field of battery testing equipment, and in particular to a test fixture for soft-pack batteries. Background Technology

[0002] As the new energy industry increases its requirements for battery energy density, safety, and consistency, the traditional battery production process includes steps such as electrode die-cutting, electrode stacking, tab welding, plastic film forming, top and side sealing, electrolyte injection, and vacuum sealing. The equipment required includes battery packaging machines, electrode cutting machines, and ultrasonic tab welding machines. At the same time, the operating environment has high requirements. To ensure the true performance of the battery, the operation needs to be carried out in a dry room or the instruments need to be placed in a glove box. These complex preparation processes have, to some extent, hindered the development of new electrode materials and new electrolytes.

[0003] In addition, traditional test fixtures face severe challenges in multi-station parallel testing and adaptability to complex environments: existing single-station fixtures have a simple sealing structure, which makes it difficult to suppress the interference of humidity and dust on battery thermal runaway testing or electrochemical performance evaluation. Modular stacking solutions often suffer from problems such as interlayer leakage and poor circuit contact due to unstable connector locking or insufficient sealing ring compression. Furthermore, when adapting to batteries of different thicknesses, fixtures need to be changed frequently, which seriously restricts the testing efficiency and data reliability of the production line.

[0004] Against this backdrop, there is an urgent need to develop a battery manufacturing and testing device that can simplify the production process, while also possessing high sealing performance and modular stacking capabilities. This device would support simplified battery manufacturing processes, simultaneous testing of multiple batteries, and reduce the impact of environmental variables on test results, thereby promoting the intelligent upgrading of battery R&D and quality control systems. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a soft-pack battery testing fixture.

[0006] The objective of this utility model is achieved through the following technical solution: a soft-pack battery testing fixture, comprising a device body and a device cover, wherein the device body and the device cover, when combined, have a sealing function, and the device cover can be detached from the device body. The device body is provided with a testing cavity, and the testing cavity is provided with a plurality of grooves for accommodating electrode sheets at intervals, each groove being capable of accommodating electrode sheets of different sizes. The testing cavity is also provided with an internal clamping block for fixing the electrode tabs, and each internal clamping block is positioned corresponding to one of the grooves. The side of the device body is provided with a plurality of multifunctional testing holes.

[0007] As an improvement of the soft-pack battery testing fixture of this utility model, the cavity clamping block is provided with an cavity clamping block and a clamping screw. The clamping screw passes through the cavity clamping block and presses on the electrode tab. The clamping screw locks the electrode tab. Both ends of the main body of the device are provided with multi-functional test holes. The multi-functional test holes are provided with internal and external connecting guides.

[0008] As an improvement to the soft-pack battery test fixture of this utility model, the multifunctional test hole is not limited to airtightness testing, in-situ detection, and installation of internal and external connecting guides, but can also be used for other customized functions.

[0009] As an improvement to the soft-pack battery testing fixture of this utility model, the inner and outer connecting guides are composed of a connecting rod, an outer connecting guide, and a connecting shaft. The inner and outer connecting guides have a shrinking and folding function after assembly.

[0010] As an improvement to the soft-pack battery testing fixture of this utility model, the position of the cavity clamping block within the main body of the device can be adjusted according to the different sizes of the electrode sheets.

[0011] As an improvement to the soft-pack battery testing fixture of this utility model, a sealing ring is provided between the device body and the device cover. When the device body and the device cover are connected by the cover fixing member, the sealing ring is squeezed and deformed by the device body and the device cover.

[0012] As an improvement to the soft-pack battery testing fixture of this utility model, the multifunctional test hole is connected to the test cavity.

[0013] As an improvement to the soft-pack battery test fixture of this utility model, the inner and outer connecting guides pass through the multi-functional test hole and are electrically connected to the clamping block inside the cavity.

[0014] As an improvement to the soft-pack battery testing fixture of this utility model, one end of the main body of the device is provided with a clearance groove corresponding to the position of the multi-functional test hole, and the external connecting guide can be folded and stored along the direction of the clearance groove.

[0015] The advantages of this invention are as follows: The test chamber is equipped with multiple grooves spaced apart to accommodate electrode sheets. Each groove has a different size and can accommodate electrode sheets of different sizes, allowing for testing of electrode sheets of various sizes and types. An internal clamping block secures the tabs on the electrode sheets. This invention enables multi-electrode stacking testing, and the overall sealed design allows for easy removal and installation without damaging the tabs, effectively improving testing efficiency. Attached Figure Description

[0016] Figure 1This is a perspective view of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is a side view of the present invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the main body of the device of this utility model;

[0021] The attached figures are labeled as follows: 001, main body of the device; 011, box body; 012, clearance groove; 131, clamping screw; 132, internal clamping block; 133, external connecting guide; 134, internal and external connecting guide; 014, multi-functional test hole; 015, insulating pad; 016, sealing ring; 002, device top cover; 021, top cover fixing component; 022, top cover clearance groove; 003, test chamber; 031, groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] The technical solutions of the various embodiments can be combined with each other, but must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] like Figures 1-5As shown, a soft-pack battery testing fixture includes a main body 001 and a top cover 002. The main body 001 and top cover 002, when combined, provide a sealing function. The top cover 002 can be detached from the main body 001. The main body 001 has a testing chamber 003, within which multiple grooves 031 are spaced apart for accommodating electrode sheets. Each groove 031 can accommodate electrode sheets of different sizes. The testing chamber 003 also has internal clamping blocks 132 for fixing electrode tabs. Each internal clamping block 132 corresponds to the position of one groove 031. The side of the main body 001 has multiple multi-functional testing holes 014. These multi-functional testing holes 014 are not limited to airtightness testing, in-situ detection, and installation of internal and external connecting guides 134; they can also be used for other customized functions. The multi-functional testing holes 014 communicate with the testing chamber 003.

[0026] Preferably, the cavity clamping block 132 is provided with an internal and external cavity connecting guide 134 and a clamping screw 131. The clamping screw 131 passes through the cavity clamping block 132, the cavity clamping block 132 presses against the electrode tab, and the clamping screw 131 locks the electrode tab. The clamping screw 131 is a screw.

[0027] Preferably, both ends of the main body 001 of the device are provided with multi-functional test holes 014. The multi-functional test holes 014 are provided with internal and external connecting guides 134. After the internal and external connecting guides 134 are assembled with the external connecting guides 133, they have a shrinking and folding function. The internal and external connecting guides 134 pass through the multi-functional test holes 014 and are connected to the clamping block 132 inside the cavity.

[0028] Preferably, the position of the cavity clamping block 132 within the device body 001 can be adjusted according to the different sizes of the electrode sheets.

[0029] Preferably, a sealing ring 016 is provided between the device body 001 and the device cover 002. When the device body 001 and the device cover 002 are fixedly connected by the cover fixing member 021, the sealing ring 016 is deformed by the device body 001 and the device cover 002.

[0030] Preferably, the device also includes insulating pads 015 of different thicknesses. The insulating pads 015 and the device cover 002 work together on the electrode. The greater the thickness of the insulating pads 015, the smaller the thickness of the electrode being tested in the test chamber 003; conversely, the smaller the thickness of the insulating pads 015, the larger the thickness of the electrode being tested in the test chamber 003. The insulating pads 015 of different thicknesses are used to adjust the spatial distance when the thickness of the electrode being tested is different, so as to ensure the pressure on the electrode.

[0031] Preferably, one end of the device body 001 is provided with a clearance groove 012 corresponding to the position of the multi-functional test hole 014. The inner and outer connecting guides 134 on the device body 001 with clearance grooves 012 have rotatable outer connecting guides 133. The outer connecting guides 133 can be folded and stored along the direction of the clearance grooves 012. The outer connecting guides 133 are movably connected to the inner and outer connecting guides 134 via connecting shafts. The device cover 002 is provided with an upper clearance groove 012 corresponding to the position of the clearance grooves 012. The inner and outer connecting guides 134 with the folding and storage function of the outer connecting guides 133 can be either a positive or negative port. Alternatively, such folding and storage external connecting guides 133 can be provided on both ends of the multi-functional test holes 014 of the device body 001.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soft package battery test fixture, comprising a device main body (001), a device upper cover (002), the device main body (001), the device upper cover (002) have sealing function after combination, the device upper cover (002) can be split with the main body, characterized in that, The main body (001) of the device is provided with a test cavity (003). The test cavity (003) is provided with a plurality of grooves (031) for accommodating electrode sheets at intervals. Each groove (031) can accommodate electrode sheets of different sizes. The test cavity (003) is also provided with an internal clamping block (132) for fixing the electrode tab. Each internal clamping block (132) is positioned corresponding to one of the grooves (031). The side of the main body (001) of the device is provided with a plurality of multifunctional test holes (014).

2. The pouch battery test fixture of claim 1, wherein, The cavity clamping block (132) is provided with an external connecting guide (133), an internal and external connecting guide (134) and a clamping screw (131). The clamping screw (131) passes through the cavity clamping block (132) and presses on the electrode tab. The clamping screw (131) locks the electrode tab. Both ends of the device body (001) are provided with multi-functional test holes (014). The multi-functional test holes (014) are provided with internal and external connecting guides (134).

3. The pouch battery test fixture of claim 1, wherein, The multifunctional test port (014) is not limited to airtightness testing, in-situ detection, and installation of internal and external connecting guides (134).

4. The soft-pack battery test fixture according to claim 2, wherein the inner and outer connecting guides (134) and the outer connecting guide (133) have a shrink-folding function after assembly.

5. The pouch battery test fixture of claim 1, wherein, The cavity clamping block (132) can be adjusted in position within the main body (001) of the device according to the different sizes of the electrode.

6. The pouch battery test fixture of claim 1, wherein, A sealing ring (016) is provided between the device body (001) and the device cover (002). When the device body (001) and the device cover (002) are connected by the cover fixing member (021), the sealing ring (016) is squeezed and deformed by the device body (001) and the device cover (002).

7. The pouch battery test fixture of claim 2, wherein, The multifunctional test hole (014) is connected to the test cavity (003).

8. The soft-pack battery test fixture of claim 4, wherein, The inner and outer connecting guide (134) passes through the multifunctional test hole (014) and is electrically connected to the cavity clamping block (132).

9. The soft-pack battery test fixture of claim 7, wherein, One end of the main body (001) of the device is provided with a clearance groove (012) corresponding to the position of the multi-functional test hole (014), and the external connecting guide (133) can be folded and stored along the direction of the clearance groove (012).

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