A left and right pressing mechanism for cell formation and dispensing

Abstract

The application provides a left-right pressing mechanism for battery cell formation and batching in the technical field of battery cell formation and batching, which comprises two pressing modules, two probe modules, a negative pressure module and a temperature module. The pressing module comprises a pair of sliding rails, a same-motion beam, a cylinder, two circular rack adjusting modules and two locking mechanisms. The probe module is installed on the inner side of the two circular rack adjusting modules. The two locking mechanisms are installed on the two sides of the top end of the same-motion beam and used for locking the circular rack adjusting modules. The application has the advantages of greatly improving the convenience of operation and maintenance of the pressing mechanism and greatly reducing the cost.

Description

Technical Field

[0001] This invention relates to the field of cell formation and capacity testing technology, and in particular to a left and right pressing mechanism for cell formation and capacity testing. Background Technology

[0002] After production, battery cells need to undergo formation and capacity testing. Formation involves initial charge and discharge to activate the internal chemical substances, while capacity testing sorts the cells by capacity. With advancements in battery cell technology, dual-terminal cells have emerged, rendering traditional top-bottom bonding mechanisms for cells with top-side terminals obsolete. While left-right bonding mechanisms exist for dual-terminal cells, they suffer from the following drawbacks:

[0003] 1. The double-layer slide rail and slider structure is complex and requires high precision in installation and debugging. 2. Position adjustment using a gear and rack requires an additional rack and locking block for positioning and locking, resulting in a complex structure, inconvenient operation, and reduced changeover efficiency. 3. For testing a large number of battery cells, the left and right pressing mechanisms have a large span, requiring large aluminum plates for installation and connection of the double-layer slide rail and rack mechanism, demanding high processing standards and increasing costs. 4. The probe module, temperature module, and negative pressure module are all connected using machined adjusting seats and blocks, resulting in a complex structure, complex processing, and inconvenient operation.

[0004] Therefore, how to provide a left and right pressing mechanism for cell formation and capacity testing, and improve the convenience of operation and maintenance of the pressing mechanism and reduce costs, has become an urgent technical problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a left and right pressing mechanism for battery cell formation and capacity testing, thereby improving the convenience of operation and maintenance of the pressing mechanism and reducing costs.

[0006] This invention is implemented as follows: a left and right pressing mechanism for cell formation and capacity testing, comprising:

[0007] Two pressing modules are arranged symmetrically facing each other;

[0008] Two probe modules are respectively mounted on one of the pressing modules;

[0009] A negative pressure module is installed on one of the probe modules;

[0010] A temperature module is mounted on another of the aforementioned probe modules;

[0011] The pressing module includes:

[0012] A pair of slide rails, arranged parallel to each other;

[0013] A moving beam has its two ends slidably connected to one of the aforementioned slide rails;

[0014] One cylinder, with its power output end connected to the moving beam;

[0015] Two rack and pinion adjustment modules are arranged parallel to each other on both sides of the top of the moving beam; the probe module is installed inside the two rack and pinion adjustment modules.

[0016] Two locking mechanisms are installed on both sides of the top of the moving beam to lock the rack and pinion adjustment module.

[0017] Furthermore, a limiting buffer is provided at each of the front and rear ends of the slide rail.

[0018] Furthermore, the moving beam is slidably connected to the slide rail via a slider.

[0019] Furthermore, the cylinder is connected to the moving beam via a floating joint.

[0020] Furthermore, the probe module includes:

[0021] A probe mounting plate with at least one locking hole at each end;

[0022] Several current probes are mounted side by side on the probe mounting plate;

[0023] A terminal adapter is mounted on the probe mounting plate and located behind each of the current probes;

[0024] At least two locking attachments are used to lock the probe module onto the rack and pinion adjustment module through the locking holes;

[0025] Two guide shafts are vertically positioned at both ends of the probe mounting plate; the probe module is connected to the negative pressure module or the temperature module via the guide shafts.

[0026] Furthermore, the probe module also includes:

[0027] A first-line sheet metal piece is used to hold the cables connecting each of the current probes;

[0028] Two nylon limiting strips pass side by side through the cables connecting each of the current probes.

[0029] Furthermore, the negative pressure module includes:

[0030] A piece of negative pressure sheet metal;

[0031] A suction nozzle mounting plate is installed on the negative pressure sheet metal;

[0032] Several negative pressure suction nozzles are mounted side by side on the suction nozzle mounting plate;

[0033] Two guide seats are respectively located at both ends of the nozzle mounting plate and connected to the probe module;

[0034] Two first guide shaft supports are respectively disposed at the top of one of the guide seats for locking the probe module.

[0035] Furthermore, the negative pressure module also includes:

[0036] A liquid receiving tray is mounted on the nozzle mounting plate, located below each of the negative pressure nozzles.

[0037] Furthermore, the guide seat is connected to the probe module via an oil-free bushing.

[0038] Furthermore, the temperature module includes:

[0039] A probe mounting plate;

[0040] Several temperature probes are mounted side by side on the probe mounting plate;

[0041] A second line drag sheet metal is installed behind the probe mounting plate;

[0042] Two second guide shaft supports are respectively located at both ends of the probe mounting plate and connected to the probe module.

[0043] The advantages of this invention are:

[0044] By setting up two pressing modules, each linked to a probe module, the terminals of the dual-terminal battery cell with outlet pins in the middle are pressed together. A negative pressure module and a temperature module are respectively mounted on the probe module to press together the liquid injection port and the housing of the dual-terminal battery cell. The pressing module is driven by a cylinder to move a moving beam on a slide rail, thus adopting a single-layer structure instead of the traditional double-layer slide rail slider structure. The negative pressure module and temperature module are mounted on the probe module via guide seats, guide shaft supports, and guide shafts, resulting in a simple structure. By adjusting the extension distance of the adjusting module using a rack and pinion mechanism and replacing guide shafts of different lengths, it can accommodate dual-terminal battery cells of different sizes. Furthermore, the rack and pinion adjusting module is directly locked in position by a locking mechanism, eliminating the need for a separate rack and locking block as in traditional methods. This significantly improves the ease of maintenance of the pressing mechanism and greatly reduces costs. Attached Figure Description

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0046] Figure 1 This is a schematic diagram of the left and right pressing mechanism for cell formation and capacity testing according to the present invention.

[0047] Figure 2This is a side view of a left and right pressing mechanism for cell formation and capacity testing according to the present invention.

[0048] Figure 3 This is a schematic diagram of the pressing module of the present invention.

[0049] Figure 4 This is a schematic diagram of the probe module of the present invention.

[0050] Figure 5 This is a schematic diagram of the negative pressure module of the present invention.

[0051] Figure 6 This is a schematic diagram of the temperature module of the present invention.

[0052] Marker explanation:

[0053] 100-A left and right pressing mechanism for battery cell formation and capacity testing, 1-pressing module, 2-probe module, 3-negative pressure module, 4-temperature module, 11-slide rail, 12-co-moving beam, 13-cylinder, 14-round rack and pinion adjustment module, 15-locking mechanism, 111-limiting buffer, 121-slider, 131-floating connector, 21-probe mounting plate, 22-current probe, 23-terminal adapter, 24-locking accessory, 25-guide shaft, 26-first wire drag sheet metal, 27-nylon limiting strip, 211-locking hole, 31-negative pressure sheet metal, 32-suction nozzle mounting plate, 33-negative pressure suction nozzle, 34-guide seat, 35-first guide shaft support, 36-draining tray, 41-probe mounting plate, 42-temperature probe, 43-second wire drag sheet metal, 44-second guide shaft support. Detailed Implementation

[0054] This invention provides a left and right pressing mechanism 100 for battery cell formation and capacity testing. It solves several problems in existing technologies, including: the use of a double-layer slide rail slider structure, which is complex and requires high installation and debugging standards; the use of gears and racks for position adjustment, which requires an additional rack and locking block for positioning and locking, resulting in complex structure, inconvenient operation, and reduced changeover efficiency; the large span of the left and right pressing mechanism for testing a large number of batteries, requiring large-area aluminum plates for the installation and connection of the two-layer slide rail and rack mechanism, which demands high processing technology and increases costs; and the complex structure, complex processing, and inconvenient operation of the probe module, temperature module, and negative pressure module, all connected by machined adjusting seats and blocks. This invention significantly improves the ease of maintenance of the pressing mechanism and greatly reduces costs.

[0055] The technical solution in this embodiment of the invention is to solve the above problems. The overall idea is as follows: By setting the pressing module 1 to drive the moving beam 12 to move on the slide rail 11 through the cylinder 13, a single-layer structure is adopted instead of the traditional double-layer slide rail slider structure. The negative pressure module 3 and the temperature module 4 are installed on the probe module 2 through the guide seat 34, the guide shaft support 35 / 44, and the guide shaft 25. The structure is simple and the cost is reduced. By adjusting the extension distance of the rack and pinion adjustment module 14 and replacing the guide shaft 25 with different lengths, it can be compatible with double-sided electrode post cells of different sizes. The rack and pinion adjustment module 14 can be locked in position directly through the locking mechanism 15 to improve the convenience of operation and maintenance of the pressing mechanism 100.

[0056] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0057] Please refer to Figures 1 to 6 As shown, a preferred embodiment of the left and right pressing mechanism 100 for cell formation and capacity testing according to the present invention includes:

[0058] Two pressing modules 1 are symmetrically arranged facing each other and installed on the lower frame of the mechanical unit (not shown), which are used to drive the probe module 2, the negative pressure module 3 and the temperature module 4 to move.

[0059] Two probe modules 2 are respectively installed on a pressing module 1 to press the terminals of the double-ended terminal cell (not shown) to charge and discharge the cell and collect the tab voltage and cell voltage.

[0060] A negative pressure module 3 is installed on one of the probe modules 2. Its height can be adjusted up and down. It is used to press the liquid injection port of the double-sided electrode post cell to draw out the gas generated during the formation and compatibility process.

[0061] A temperature module 4 is mounted on another probe module 2, and its height can be adjusted up and down. It is used to press the housing of the double-sided terminal post battery cell to monitor the cell temperature.

[0062] The pressing module 1 includes:

[0063] A pair of slide rails 11, arranged in parallel to each other, are used for limiting the sliding of the moving beam 12;

[0064] A moving beam 12 is slidably connected at both ends to a slide rail 11, which is used to move the circular rack and pinion adjustment module 14 in conjunction with the beam;

[0065] A cylinder 13, with its power output end connected to the moving beam 12, is used to provide power for the displacement of the moving beam 12;

[0066] Two rack and pinion adjustment modules 14 are arranged parallel to each other on both sides of the top of the moving beam 12; the probe module 2 is installed inside the two rack and pinion adjustment modules 14 and is used to adjust the extension distance of the probe module 2 to match the battery cells of different sizes; the rack and pinion adjustment module 14 includes gears, oil-free bushings and their mating racks inside the double-layer mounting base, the front section of the rack is equipped with a buffer block and a guide shaft support, and the rear section is an aluminum profile to prevent the rack from rotating;

[0067] Two locking mechanisms 15 are installed on both sides of the top of the moving beam 12 to lock the circular rack adjustment module 14. The locking mechanism 15 consists of a gear connected to the same gear shaft, a locking rack, a quick clamp, a shoulder bolt, and a return spring.

[0068] The slide rail 11 is provided with a limiting buffer 111 at both the front and rear ends to prevent the moving beam 12 from sliding off the slide rail.

[0069] The moving beam 12 is slidably connected to the slide rail 11 via the slider 121.

[0070] The cylinder 13 is connected to the moving beam 12 via a floating joint 131.

[0071] The probe module 2 includes:

[0072] A probe mounting plate 21 has at least one locking hole 211 at each end;

[0073] Several current probes 22 are mounted side by side on the probe mounting plate 21 for pressing the electrode posts;

[0074] A terminal adapter 23 is mounted on the probe mounting plate 21 and located behind each of the current probes 22;

[0075] At least two locking attachments 24 are used to lock the probe module 2 onto the rack and pinion adjustment module 14 through the locking holes 211. These attachments can be bolts and nuts.

[0076] Two guide shafts 25 are vertically disposed at both ends of the probe mounting plate 21; the probe module 2 is connected to the negative pressure module 3 or the temperature module 4 through the guide shafts 25.

[0077] The probe module 2 also includes:

[0078] A first-line drag sheet metal 26 is used to hold the cables connecting each of the current probes 22;

[0079] Two nylon limiting strips 27 pass side by side through the cables connecting each of the current probes 22 to ensure smooth cable movement when the left and right sides are pressed together.

[0080] The negative pressure module 3 includes:

[0081] A negative pressure sheet metal 31 is used to support the negative pressure module 3;

[0082] A suction nozzle mounting plate 32 is mounted on the negative pressure sheet metal 31;

[0083] Several negative pressure suction nozzles 33 are installed side by side on the suction nozzle mounting plate 32 for pressing and closing the injection port;

[0084] Two guide seats 34 are respectively located at both ends of the nozzle mounting plate 32 and connected to the probe module 2;

[0085] Two first guide shaft supports 35 are respectively disposed on the top of one of the guide seats 34 for locking the probe module 2.

[0086] The negative pressure module 3 also includes:

[0087] A liquid receiving tray 36 is installed on the nozzle mounting plate 32 and located below each of the negative pressure nozzles 33, for receiving the electrolyte carried out during the gas suction process.

[0088] The guide seat 34 is connected to the probe module 2 via an oil-free bushing (not shown).

[0089] The temperature module 4 includes:

[0090] A probe mounting plate 41 is used to support the temperature module 4;

[0091] Several temperature probes 42 are mounted side by side on the probe mounting plate 41;

[0092] A second line drag sheet metal 43 is installed behind the probe mounting plate 41;

[0093] Two second guide shaft supports 44 are respectively located at both ends of the probe mounting plate 41 and connected to the probe module 2.

[0094] Working principle of this invention:

[0095] Left and right pressing: The cylinders 13 on both sides push the moving beam 12 to slide on the slide rail 11, thereby driving the two sets of circular rack adjustment modules 14 to move closer to the battery cell electrode, so that the probe module 2 presses the battery cell electrode, the negative pressure module 3 presses the liquid injection port, and the temperature module 4 presses the battery cell housing.

[0096] Cell replacement with different terminal spacing: The circular rack adjustment module 14 is unlocked by the locking mechanism 15, and the circular rack adjustment module 14 is adjusted to extend and retract left and right. After adjusting to a suitable pressing spacing, the circular rack adjustment module 14 is locked by the locking mechanism 15.

[0097] For battery cell replacement at different heights: Unlock the first guide shaft support 35 on the negative pressure module 3, so that the negative pressure module 3 moves up and down. When the height of the negative pressure suction nozzle 33 is consistent with the height of the liquid injection port, lock the first guide shaft support 35. Similarly, adjust the temperature module 4.

[0098] In summary, the advantages of this invention are:

[0099] By setting up two pressing modules, each linked to a probe module, the terminals of the dual-terminal battery cell with outlet pins in the middle are pressed together. A negative pressure module and a temperature module are respectively mounted on the probe module to press together the liquid injection port and the housing of the dual-terminal battery cell. The pressing module is driven by a cylinder to move a moving beam on a slide rail, thus adopting a single-layer structure instead of the traditional double-layer slide rail slider structure. The negative pressure module and temperature module are mounted on the probe module via guide seats, guide shaft supports, and guide shafts, resulting in a simple structure. By adjusting the extension distance of the adjusting module using a rack and pinion mechanism and replacing guide shafts of different lengths, it can accommodate dual-terminal battery cells of different sizes. Furthermore, the rack and pinion adjusting module is directly locked in position by a locking mechanism, eliminating the need for a separate rack and locking block as in traditional methods. This significantly improves the ease of maintenance of the pressing mechanism and greatly reduces costs.

[0100] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A left and right pressing mechanism for cell formation and capacity testing, characterized in that: include: Two pressing modules are arranged symmetrically facing each other; Two probe modules are respectively mounted on one of the pressing modules; A negative pressure module is installed on one of the probe modules; A temperature module is mounted on another of the aforementioned probe modules; The pressing module includes: A pair of slide rails, arranged parallel to each other; A moving beam has its two ends slidably connected to one of the aforementioned slide rails; One cylinder, with its power output end connected to the moving beam; Two circular rack adjustment modules are arranged parallel to each other on both sides of the top of the moving beam; the probe module is installed inside the two circular rack adjustment modules and is used to adjust the extension distance of the probe module to match the battery cells of different sizes. The circular rack adjustment module includes gears, oil-free bushings and their mating circular racks inside the double-layer mounting base. The front section of the circular rack is equipped with a buffer block and a guide shaft support, and the rear section is an aluminum profile to prevent the rack from rotating. Two locking mechanisms are installed on both sides of the top of the moving beam to lock the rack and pinion adjustment module; the locking mechanism includes a gear connected to the gear shaft, a locking rack, a quick clamp, a shoulder bolt, and a return spring; The probe module includes: A probe mounting plate with at least one locking hole at each end; Several current probes are mounted side by side on the probe mounting plate; A terminal adapter is mounted on the probe mounting plate and located behind each of the current probes; At least two locking attachments are used to lock the probe module onto the rack and pinion adjustment module through the locking holes; Two guide shafts are vertically positioned at both ends of the probe mounting plate; the probe module is connected to the negative pressure module or the temperature module via the guide shafts. The negative pressure module includes: A piece of negative pressure sheet metal; A suction nozzle mounting plate is installed on the negative pressure sheet metal; Several negative pressure suction nozzles are mounted side by side on the suction nozzle mounting plate; Two guide seats are respectively located at both ends of the nozzle mounting plate and connected to the probe module; Two first guide shaft supports are respectively disposed at the top of one of the guide supports, for locking the probe module; The temperature module includes: A probe mounting plate; Several temperature probes are mounted side by side on the probe mounting plate; A second line drag sheet metal is installed behind the probe mounting plate; Two second guide shaft supports are respectively located at both ends of the probe mounting plate and connected to the probe module; Unlock the first guide shaft support on the negative pressure module to move the negative pressure module up and down. When the height of the negative pressure suction nozzle is consistent with the height of the liquid injection port, lock the first guide shaft support. Similarly, adjust the temperature module.

2. The left and right pressing mechanism for cell formation and capacity testing as described in claim 1, characterized in that: The slide rail is provided with a limiting buffer at both the front and rear ends.

3. The left and right pressing mechanism for cell formation and capacity testing as described in claim 1, characterized in that: The moving beam is slidably connected to the slide rail via a slider.

4. The left and right pressing mechanism for cell formation and capacity testing as described in claim 1, characterized in that: The cylinder is connected to the moving beam via a floating joint.

5. The left and right pressing mechanism for cell formation and capacity testing as described in claim 1, characterized in that: The probe module also includes: A first-line sheet metal piece is used to hold the cables connecting each of the current probes; Two nylon limiting strips pass side by side through the cables connecting each of the current probes.

6. The left and right pressing mechanism for cell formation and capacity testing as described in claim 1, characterized in that: The negative pressure module also includes: A liquid receiving tray is mounted on the nozzle mounting plate, located below each of the negative pressure nozzles.

7. The left and right pressing mechanism for cell formation and capacity testing as described in claim 1, characterized in that: The guide seat is connected to the probe module via an oil-free bushing.

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