Soft package battery assembling and testing tool

Abstract

The utility model discloses a soft package battery assembling and testing tool, belonging to the technical field of battery testing, the soft package battery assembling and testing tool comprises a bottom plate, a hollow insulating seat and a cover plate, the inner side surfaces of the bottom plate and the cover plate are respectively provided with a boss, the boss positioned on the cover plate is provided with a liquid injection hole penetrating through the cover plate, and the hollow insulating seat is provided with a liquid outlet. Openings at the two ends of the hollow insulation seat can be matched with the bosses on the bottom plate and the cover plate respectively, and a sealed soft package battery pack containing cavity is formed between the two bosses, the soft package battery can be rapidly assembled through the tool, and welding, exhausting, packaging and other operations are not needed in the assembling process; the tool can be directly connected with charging and discharging equipment to carry out performance testing, the testing process efficiency of the soft package battery is improved, the testing process steps are simplified, the existing problems are solved, in addition, the testing tool can be repeatedly used for testing, the testing cost is saved, and therefore the testing tool has certain market value and economic benefits.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery testing, and in particular relates to a soft-pack battery assembly and testing tool. Background Art

[0002] With the continuous updating and iteration of battery products, soft-pack batteries have been widely used in modern electronic devices, electric vehicles, energy storage and other fields due to their flexible design and lightweight characteristics; in the assembly of soft-pack batteries, performance testing and verification are essential processes.

[0003] The development, testing and verification of soft-pack batteries include materials, electrolytes, structures and other aspects. Currently, soft-pack batteries need to undergo assembly steps such as welding, plastic sealing and venting before testing, which makes the process cumbersome and inefficient.

[0004] Based on the above analysis, this application designs a soft-pack battery assembly and testing tool. Utility Model Content

[0005] The purpose of the utility model is to provide a soft-pack battery assembly and testing tool, which can quickly assemble soft-pack batteries without the need for welding, exhaust and packaging operations during assembly. The tool can be directly connected to a charging and discharging device for performance testing, thereby improving the efficiency of the soft-pack battery testing process, simplifying the testing process steps, and solving existing problems.

[0006] In order to solve the above problems, the present application provides a soft-pack battery assembly and testing tool, comprising a base plate, a hollow insulating seat and a cover plate, wherein a current collecting column is respectively arranged on one side of the base plate and the cover plate, and a boss is respectively arranged on the inner side surface of the base plate and the cover plate, and a liquid injection hole penetrating the cover plate is arranged on the boss located on the cover plate, and the hollow insulating seat is arranged between the base plate and the cover plate, and the openings at both ends of the hollow insulating seat can respectively adapt to the bosses on the base plate and the cover plate to form a sealed soft-pack battery assembly cavity between the two bosses.

[0007] As a preferred solution of the present application, the inner side surfaces of the base plate and the cover plate are provided with a coaxial sinking groove, the axial projection dimension of which is larger than the boss and is adapted to the hollow insulating seat, the boss is located in the sinking groove and is 4-10 mm higher than the inner surface of the base plate and the cover plate.

[0008] As a preferred solution of the present application, an annular groove for storing a sealing ring is provided in the sinking groove, and an axial projection dimension of the annular groove is larger than the boss and smaller than the outer diameter of the sinking groove.

[0009] As a preferred solution of the present application, the cross-section of the boss is a square structure, and at the same time, the openings at both ends of the hollow insulating seat are square structures that are compatible with the boss.

[0010] As a preferred solution of the present application, the opening size of one end of the hollow insulating seat adapted to the boss on the cover plate is larger than the opening size of the other end of the hollow insulating seat adapted to the boss on the bottom plate.

[0011] As a preferred solution of the present application, locking pieces are respectively provided on the bottom plate and the cover plate, and the bottom plate and the cover plate are locked by the locking pieces.

[0012] As a preferred solution of the present application, the locking member is a threaded hole and a locking bolt arranged at corresponding positions of the base plate and the cover plate.

[0013] As a preferred solution of the present application, the current collecting column is located in the center of the sides of the base plate and the cover plate, and the surface is plated with gold, silver or copper.

[0014] As a preferred solution of the present application, the diameter of the injection hole is 1.9-2.1 mm.

[0015] Compared with the prior art, the advantages of the soft pack battery assembly and testing tool of the present application are:

[0016] The soft-pack battery assembly and testing tool of the present application comprises a bottom plate, a hollow insulating seat and a cover plate, wherein a boss is respectively arranged on the inner side of the bottom plate and the cover plate, wherein a liquid injection hole penetrating the cover plate is arranged on the boss located on the cover plate, and the openings at both ends of the hollow insulating seat can be respectively matched with the bosses on the bottom plate and the cover plate and a sealed soft-pack battery assembly cavity is formed between the two bosses. When in use, firstly match the opening at one end of the hollow insulating seat with the boss on the bottom plate, and then place the positive and negative electrode sheets and the diaphragm on the boss of the bottom plate in a certain order, and then match the boss on the cover plate with the opening at the other end of the hollow insulating seat and connect the cover plate and the bottom plate. The soft-pack battery is quickly fixed by locking it, and finally the electrolyte is filled into the battery assembly cavity through the injection hole to complete the assembly of the soft-pack battery and perform a battery test after being stationary for a specified period of time. It can be seen that the tool can quickly assemble soft-pack batteries, and there is no need for welding, exhausting and packaging during assembly. The tool can be directly connected to the charging and discharging equipment for performance testing, which improves the efficiency of the soft-pack battery testing process, simplifies the testing process steps, and solves existing problems. In addition, the testing tool can be used repeatedly for testing, saving testing costs, and therefore has certain market value and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall exploded structure of the soft-pack battery assembly and testing tool provided by the utility model.

[0018] Figure 2 This is a schematic diagram of the overall structure of the cover plate provided by the utility model.

[0019] Figure 3 This is a schematic diagram of the main structure of the cover provided by the utility model.

[0020] Figure 4 This is a schematic diagram of the overall structure of the base plate provided by the utility model.

[0021] Figure 5 This is a schematic diagram of the overall structure of the hollow insulating seat provided by the utility model.

[0022] Figure 6 This is a schematic diagram of the installation state of the hollow insulating seat provided by the utility model on the base plate.

[0023] Reference numerals

[0024] 1 is a bottom plate; 2 is a hollow insulating seat; 21 is an opening; 3 is a cover plate; 4 is a collecting column; 5 is a liquid injection hole; 6 is a liquid injection nozzle; 7 is a sinking groove; 8 is an annular groove; 9 is a threaded hole; 10 is a locking bolt; 11 is a sealing ring; 12 is a boss; and 13 is an insulating cap. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0026] like Figure 1 As shown, it is a structural schematic diagram of a soft-pack battery assembly and testing tool provided in this embodiment, and the soft-pack battery assembly and testing tool comprises a base plate 1, a hollow insulating seat 2 and a cover plate 3. It can be understood that the base plate 1 and the cover plate 3 should have conductive properties. In order to improve the safety of use, an insulating outer layer can be wrapped or coated on the base plate 1 and the cover plate 3. The specific structure of the base plate 1 and the cover plate 3 can be polygonal or circular, and the present embodiment preferably has a circular structure.

[0027] A current collecting column 4 is provided on one side of the circular bottom plate 1 and the cover plate 3, respectively. Preferably, the current collecting column 4 is located in the center of the sides of the bottom plate 1 and the cover plate 3. The current collecting column 4 is used to connect the positive and negative electrodes of the charging and discharging equipment for battery testing. The current collecting column 4 is made of conductive materials such as copper or aluminum, and the surface is plated with gold, silver or copper to improve its conductivity and corrosion resistance. At the same time, a boss 12 is provided on the inner side of the circular bottom plate 1 and the cover plate 3, respectively. Figure 2-4As shown, it can be understood that the inner side surfaces of the cover plate 3 and the bottom plate 1 are the end surfaces located inside when in use, and are also the end surfaces facing the cover plate 3 and the bottom plate 1. The boss 12 is used to place and fix the soft-pack battery. A liquid injection hole 5 penetrating the cover plate 3 is provided at the center position of the boss 12 located on the cover plate 3. The liquid injection hole 5 is adapted to the liquid injection nozzle 6 to realize the liquid injection operation. The aperture of the liquid injection hole 5 is preferably but not limited to 1.9-2.1mm; the hollow insulating seat 2 is arranged between the bottom plate 1 and the cover plate 3, and the openings 21 at both ends of the hollow insulating seat 2 can be adapted to the bosses 12 on the bottom plate 1 and the cover plate 3 respectively and form a sealed soft-pack battery assembly cavity between the two bosses 12, as shown in FIG. Figure 5-6 As shown, it can be understood that the height of the hollow insulating seat 2 should be the sum of the height of the two bosses 12 and the thickness of the soft-pack battery. The assembled soft-pack battery can be fixed and sealed in the soft-pack battery assembly cavity, that is, the hollow insulating seat 2 and the bosses 12 on the bottom plate 1 and the cover plate 3 can form a structure simulating an aluminum-plastic film. This structure can replace the traditional aluminum-plastic film to fix and seal the battery cell, without the need for welding, exhaust and packaging operations, thereby improving the assembly efficiency of the soft-pack battery and simplifying the assembly process of the soft-pack battery, providing conditions for the precise testing of the soft-pack battery. In addition, after completing the current battery test, the test tool can remove the current battery for reuse by the battery to be tested, that is, the test tool can be used for repeated testing, saving the test cost.

[0028] The inner side surfaces of the bottom plate 1 and the cover plate 3 are provided with a coaxial sinking groove 7, such as Figure 2 and Figure 4 As shown, the axial projection size of the sinking groove 7 is larger than the boss 12 and is adapted to the hollow insulating seat 2. The sinking groove 7 can be used to limit the hollow insulating seat 2. The boss 12 is located in the sinking groove 7 and is 4-10 mm higher than the inner surface of the bottom plate 1 and the cover plate 3. It can be understood that for the convenience of use, the boss 12 should be set at the center position of the sinking groove 7, that is, at the center position of the inner side of the bottom plate 1 and the cover plate 3. Of course, in other embodiments of the present application, the boss 12 can also be set at a position biased to one side of the sinking groove 7; the setting height of the boss 12 is based on ensuring that it can cooperate with the hollow insulating seat 2 to form a soft-pack battery assembly cavity with strong sealing properties.

[0029] An annular groove 8 for storing a sealing ring 11 is provided in the sinking groove 7. The axial projection size of the annular groove 8 is larger than the boss 12 and smaller than the outer diameter of the sinking groove 7. By arranging the sealing ring 11 in the annular groove 8, the sealing strength of the soft-pack battery assembly cavity formed by the boss 12 and the hollow insulating seat 2 can be further improved; the annular groove 8 is preferably also a sunken groove structure, so that the bottom surface of the sinking groove 7 can be flat, so that its contact area with the end surface of the hollow insulating seat 2 can be maximized, thereby improving the sealing performance.

[0030] The cross-section of the boss 12 is a square structure. At the same time, the openings 21 at both ends of the hollow insulating seat 2 are square structures that match the boss 12. The purpose of setting it as a square structure is to be able to adapt to the square structure of the battery cell. This can improve the utilization rate of the boss 12 surface and the inner cavity of the hollow insulating seat 2 while making the test tool structure compact. Of course, in other embodiments of the present application, if the compactness of the structure and the utilization rate of the end face are not considered, the cross-section of the boss 12 and the end structure of the hollow insulating seat 2 can also be a circular or other polygonal structure.

[0031] The size of the opening 21 at one end of the hollow insulating seat 2 adapted to the boss 12 on the cover plate 3 is 3-6 mm larger than the size of the opening 21 at the other end of the hollow insulating seat 2 adapted to the boss 12 on the bottom plate 1, that is, on the hollow insulating seat 2, the size of the opening 21 near the end of the cover plate 3 is 3-6 mm larger than the size of the opening 21 near the end of the bottom plate 1. Figure 5 As shown, it can be understood that the size of the boss 12 on the cover plate 1 should be larger than the size of the boss 12 on the bottom plate 1; the purpose of setting this structure is that: since the positive and negative electrodes need to be placed from the top, that is, the opening 21 near one end of the cover plate 3, and the size of the electrode is consistent with the size of the boss 12 on the bottom plate 1, in order to facilitate the placement of the electrode on the boss 12 of the bottom plate 1 and avoid the opening 21 near the cover plate 2 affecting the normal placement of the electrode, it is necessary to set the size of the opening 21 at one end of the hollow insulating seat adapted to the boss 21 of the cover plate 1 larger, so that on the one hand, space can be reserved for the tweezers for clamping the electrode, so that the tweezers can be used to place the electrode on the boss 12 of the bottom plate 1, and on the other hand, it can prevent the electrode from colliding with the inner side of the opening of the hollow insulating seat 2 near one end of the cover plate 3, thereby damaging the electrode. In this embodiment, it is preferred that the opening 21 and the corresponding boss 12 are both square structures corresponding to the positive and negative electrode structures.

[0032] In this embodiment, when assembling the soft-pack battery, the bottom plate 1 and the cover plate 3 can be locked by a locking piece, which is used to improve the stability of the test tool on the one hand, and to effectively fix and squeeze the soft-pack battery group on the other hand, so that the soft-pack battery has the required uniformity and tightness.

[0033] The locking members are respectively arranged on the base plate 1 and the cover plate 3, and the base plate 1 and the cover plate 3 are locked by the locking members. The locking members are threaded holes 9 and locking bolts 10 arranged at corresponding positions of the base plate 1 and the cover plate 3. The base plate 1 and the cover plate 3 can be locked by the cooperation of the locking bolts 10 and the threaded holes 9; in other embodiments of the present application, the locking member can also be a strap, a buckle or other structure.

[0034] In this embodiment, in order to improve the safety performance in use, an insulating cap 13 may be preferably sleeved on the locking bolt 10 .

[0035] The specific use principles or steps of this embodiment include:

[0036] S1: Fix the sealing ring 11 in the annular groove 8 of the bottom plate 1 and fit them together;

[0037] S2: docking an opening 21 at one end of the hollow insulating seat 2 with the boss 12 on the bottom plate 1 to achieve fixing and installation of the hollow insulating seat 2 on the bottom plate 1, and at the same time, ensuring that the bottom of the hollow insulating seat 2 is in close contact with the sealing ring 11. Since the height of the hollow insulating seat 2 is greater than the height of a single boss 12, the hollow insulating seat 2 and the boss 12 form a storage cavity with an upper end opening 21;

[0038] S3: Cutting square battery pole pieces and separators to ensure that their size is slightly smaller than the boss 12 of the bottom plate 1, using tweezers to sequentially clamp the positive pole piece, separator, and negative pole piece and place them on the boss 12 of the bottom plate 1, i.e., in the storage cavity;

[0039] S4: Take another sealing ring 11 and fix it in the annular groove 8 of the cover plate 3;

[0040] S5: inserting the boss 12 on the cover plate 3 into another opening 21 of the hollow insulating seat 2, that is, into the upper end opening 21 of the storage cavity. At this time, the boss 12 on the bottom plate 1 and the boss 12 on the cover plate 3 will form a soft pack battery assembly cavity;

[0041] S6: Use a digital torque wrench or other tool to screw the locking bolt 10 into the threaded hole 9 to fasten the bottom plate 1 and the cover plate 3. At the same time, the diaphragm and the pole piece are squeezed through the bosses 12 on the bottom plate 1 and the cover plate 3 to make the battery (or battery cell) reach the required uniformity and compactness;

[0042] S7: Tighten the screw interface of the liquid injection nozzle 6 and fix it at the liquid injection port position of the cover plate 3;

[0043] S8: Place the entire test tool in a vacuum environment, open the injection nozzle 6 switch, inject the electrolyte, and the electrolyte flows into the soft-pack battery assembly cavity through the injection hole 5 of the cover plate 3 and then into the battery. After the injection is completed, close the injection nozzle 6 switch;

[0044] S9: After standing for 24 hours, connect the positive and negative electrodes of the charging and discharging equipment to the current collecting column 4 of the test tool to perform a battery test, and judge the performance of the battery cell according to the test results.

[0045] From the above analysis, it can be seen that the tool in this embodiment can quickly assemble soft-pack batteries, and there is no need for welding, exhaust and packaging operations during assembly. The tool can be directly connected to the charging and discharging equipment for performance testing, which improves the efficiency of the soft-pack battery testing process, simplifies the testing process steps, and solves the existing problems. In addition, the testing tool can be repeatedly tested and used, saving testing costs. Therefore, it has certain market value and economic benefits.

[0046] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several improvements can be made without departing from the premise of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A soft pack battery assembly and testing tool, characterized in that: It comprises a base plate, a hollow insulating seat and a cover plate, wherein a current collecting column is respectively arranged on one side of the base plate and the cover plate, and bosses are respectively arranged on the inner side surfaces of the base plate and the cover plate, and a liquid injection hole penetrating the cover plate is arranged on the bosses located on the cover plate, and the hollow insulating seat is arranged between the base plate and the cover plate, and the openings at both ends of the hollow insulating seat can respectively adapt to the bosses on the base plate and the cover plate to form a sealed soft-pack battery assembly cavity between the two bosses.

2. The soft pack battery assembly and testing tool according to claim 1, characterized in that: The inner side surfaces of the base plate and the cover plate are provided with a coaxial sinking groove, the axial projection size of which is larger than the boss and is adapted to the hollow insulating seat, the boss is located in the sinking groove and is 4-10 mm higher than the inner surface of the base plate and the cover plate.

3. The soft pack battery assembly and testing tool according to claim 2, characterized in that: An annular groove for storing a sealing ring is arranged in the sinking groove, and an axial projection size of the annular groove is larger than the boss and smaller than the outer diameter of the sinking groove.

4. The soft pack battery assembly and testing tool according to claim 1, characterized in that: The cross section of the boss is a square structure, and at the same time, the openings at both ends of the hollow insulating seat are square structures that are adapted to the boss.

5. The soft pack battery assembly and testing tool according to claim 1, characterized in that: The size of an opening at one end of the hollow insulating seat matched with the boss on the cover plate is larger than the size of an opening at the other end of the hollow insulating seat matched with the boss on the bottom plate.

6. The soft pack battery assembly and testing tool according to claim 1, characterized in that: The bottom plate and the cover plate are respectively provided with locking pieces, through which the bottom plate and the cover plate are locked.

7. The soft pack battery assembly and testing tool according to claim 6, characterized in that: The locking member is a threaded hole and a locking bolt arranged at corresponding positions of the base plate and the cover plate.

8. The soft pack battery assembly and testing tool according to claim 1, characterized in that: The current collecting column is located at the center of the sides of the bottom plate and the cover plate, and the surface is plated with gold, silver or copper.

9. The soft pack battery assembly and testing tool according to claim 1, characterized in that: The diameter of the injection hole is 1.9-2.1 mm.

Images