Battery cell pre-charge negative pressure device and pre-charge equipment

Abstract

This application relates to the field of battery manufacturing technology and provides a cell pre-charge negative pressure device and a pre-charge equipment. The cell pre-charge negative pressure device includes a bracket mounted on the pre-charge equipment, multiple mounting seats slidably mounted on the bracket, and negative pressure components. The spacing between adjacent mounting seats is adjustable, and each mounting seat is provided with a position locking structure between itself and the bracket, which locks the corresponding mounting seat onto the bracket. Multiple negative pressure components are provided, each corresponding to one of the mounting seats. Each negative pressure component includes a negative pressure nozzle mounted on the corresponding mounting seat, a buffer cup above the negative pressure nozzle, and a negative pressure tube connecting the negative pressure nozzle and the buffer cup. Each negative pressure nozzle corresponds one-to-one with the electrolyte injection hole of each cell in the battery pack. This cell pre-charge negative pressure device is compatible with the use of cells of different thicknesses.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a cell pre-charge negative pressure device and pre-charge equipment. Background Technology

[0002] In the battery manufacturing process, cell pre-charging is a key step to ensure the stability and installability of cell performance. Its core equipment is the cell pre-charging negative pressure device, which mainly achieves cell pre-charging by connecting the negative pressure nozzle to the cell's pre-charging port.

[0003] Currently, most negative pressure suction nozzles in the battery cell pre-charge negative pressure device industry are fixedly installed, and the spacing between each negative pressure suction nozzle is set according to the spacing of the corresponding battery cell pre-charge port. During use, the spacing cannot be adjusted according to usage requirements. Therefore, for battery cells of different thicknesses and sizes, different specifications of battery cell pre-charge negative pressure devices need to be designed, which cannot be compatible with the usage requirements of battery cells of different thicknesses and sizes. Utility Model Content

[0004] In view of this, this application aims to provide a cell pre-charge negative pressure device to meet the usage requirements of cells with different thicknesses.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A battery cell pre-charge negative pressure device includes a bracket mounted on a pre-charge device, a plurality of mounting seats slidably mounted on the bracket, and a negative pressure component; The spacing between two adjacent mounting seats is adjustable, and each mounting seat is provided with a position locking structure between itself and the bracket. Each position locking structure is used to lock the corresponding mounting seat onto the bracket. The negative pressure components are multiple, each corresponding to one of the mounting bases. Each negative pressure component includes a negative pressure suction nozzle on the corresponding mounting base, a buffer cup above the negative pressure suction nozzle, and a negative pressure tube connecting the negative pressure suction nozzle and the buffer cup. Each negative pressure suction nozzle is used to correspond one-to-one with the liquid injection hole of each cell in the battery pack.

[0006] Furthermore, the bracket includes a main rod and connecting seats at both ends of the main rod; a plurality of mounting seats are slidably mounted on the main rod from one end of the main rod, and the bracket is connected to the pre-charging device through the connecting seats at both ends.

[0007] Furthermore, the main rod is provided with a track extending along the length of the main rod; each mounting seat is provided with a track groove, and each mounting seat is slidably mounted on the track through the corresponding track groove.

[0008] Furthermore, the length of the track is less than the length of the main rod, and an installation slot is formed at one end of the main rod; each of the mounting seats is installed onto the track from the installation slot.

[0009] Furthermore, each of the mounting bases is provided with a mounting hole, the negative pressure suction nozzle is installed at one end of the mounting hole, and the negative pressure tube passes through the mounting hole; the main rod body is provided with a clearance hole corresponding to the mounting hole, and the clearance hole is used to avoid each of the negative pressure suction nozzles.

[0010] Furthermore, multiple of the buffer cups are fixed on the mounting bracket; the connecting seat is provided with a first connecting part and a second connecting part, the first connecting part being used to connect the pre-charging device, and the second connecting part being used to connect the mounting bracket.

[0011] Furthermore, each of the aforementioned position locking structures includes a locking hole on the bracket, an elongated hole on each of the aforementioned mounting bases, and a locking member; the long axis of the elongated hole extends along the length direction of the bracket, the locking member passes through the elongated hole and is screwed into the locking hole, and the position of the locking member in the elongated hole is adjustable.

[0012] Compared with related technologies, this application has the following advantages: (1) The pre-charge negative pressure device for battery cells described in this application can be adapted to use battery cells of different thicknesses by making the spacing between two adjacent mounting seats adjustable, and the mounting seats are locked on the bracket by the position locking structure to ensure that the mounting seats are stable and reliable on the bracket, thereby improving the compatibility and reliability of the negative pressure device.

[0013] (2) The main rod body facilitates the installation of the mounting base on the bracket, and the connecting base facilitates the installation of the bracket on the pre-charging equipment. The main rod body and the connecting base have a simple structure and are easy to process and form.

[0014] (3) By setting an integral track on the main rod, it is easy to prepare the structure. Each mounting seat is slidably set on the track through the corresponding track groove. Through the cooperation of the track and the track groove, it can also play a good guiding role.

[0015] (4) The installation slots facilitate the assembly and disassembly of each mounting base on the track, making operation convenient and aiding in design implementation.

[0016] (5) The mounting holes facilitate the assembly of the negative pressure nozzle on the mounting base and the arrangement of the negative pressure tube. The clearance holes can avoid the negative pressure nozzle, making it easier for the negative pressure nozzle to pass through smoothly. On the other hand, they can also reduce weight and facilitate the lightweight design of the bracket.

[0017] (6) The mounting bracket provides a basis for arranging multiple buffer cups. The mounting bracket is connected to the bracket through the second connecting part. The integration of the mounting bracket and the bracket can make the overall structure of the negative pressure device more compact.

[0018] (7) By cooperating with the locking part and the elongated hole, the position of the locking part on the elongated hole is adjustable. Its structure is relatively simple, easy to manufacture, and can better adjust the distance between adjacent mounting seats.

[0019] This application also proposes a pre-charging device, which is equipped with a cell pre-charging negative pressure device as described above.

[0020] The pre-charging device described in this application, through the setting of the pre-charging negative pressure device for the battery cells as described above, can adjust the spacing between each mounting base and lock the mounting base on the bracket through the position locking structure, thereby being compatible with the use requirements of battery cells of different thicknesses and sizes. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the battery cell pre-charge negative pressure device described in the embodiments of this application; Figure 2 This is a schematic diagram showing the usage state of the battery cell pre-charge negative pressure device described in the embodiments of this application; Figure 3 This is a top view of the bracket of the battery cell pre-charge negative pressure device described in the embodiments of this application; Figure 4 This is a side view of the bracket of the battery cell pre-charge negative pressure device described in the embodiments of this application; Figure 5 This is a side view of the mounting base of the battery cell pre-charge negative pressure device described in the embodiments of this application; Figure 6 for Figure 5 Enlarged view of section AA; Explanation of reference numerals in the attached figures: 1. Bracket; 101. Main rod body; 102. Connecting seat; 1011, clearance hole; 1021, first connecting part; 1022, second connecting part; 2. Mounting bracket; 201. Track groove; 202. Mounting hole; Countersink; 3. Position locking structure; 301. Locking hole; 302. Elongated hole; 303. Locking component; 401, Cache Cup; 5. Track; 6. Mounting slot; 7. Mounting bracket; 8. Battery cell. Detailed Implementation

[0022] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0024] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0026] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0028] An embodiment of the first aspect of this application provides a battery cell pre-charge negative pressure device, which is applied in a pre-charge device and is mainly used to complete the pre-charge operation. Furthermore, the battery cell pre-charge negative pressure device of this embodiment, with its innovative structural design, can meet the usage requirements of battery cells of different thicknesses.

[0029] In related technologies, cell pre-charging is a key process in battery manufacturing to ensure the stability and installability of cell performance. Its core equipment is the cell pre-charging negative pressure device, which mainly connects the negative pressure nozzle to the cell's pre-charging port to perform the pre-charging operation. Specifically, during the pre-charging operation, the negative pressure nozzle connects to the pre-charging port (such as the electrolyte injection hole) to remove residual air from the cell, allowing the electrolyte to quickly and evenly permeate the cell. Furthermore, during the pre-charging process, the negative pressure nozzle also draws out the gas generated by the reaction in the cell, which is beneficial for the cell pre-charging operation.

[0030] Currently, most negative pressure suction nozzles in the battery cell pre-charge negative pressure device industry are fixedly installed, and the spacing between each negative pressure suction nozzle is set according to the spacing of the corresponding battery cell pre-charge port. During use, the spacing cannot be adjusted according to usage requirements. Therefore, for battery cells of different thicknesses and sizes, different specifications of battery cell pre-charge negative pressure devices need to be designed, which cannot be compatible with the usage requirements of battery cells of different thicknesses and sizes.

[0031] In view of this, in order to overcome the shortcomings of related technologies, the battery cell pre-charge negative pressure device in this embodiment combines... Figures 1 to 6 As shown, the overall design includes a bracket 1, a mounting base 2, and a negative pressure assembly.

[0032] The bracket 1 is installed on the pre-charging device, and multiple mounting seats 2 are slidably mounted on the bracket 1. The distance between two adjacent mounting seats 2 is adjustable, and each mounting seat 2 is provided with a position locking structure 3 between it and the bracket 1. Each position locking structure 3 is used to lock the corresponding mounting seat 2 on the bracket 1. The negative pressure components are multiple ones that correspond to each mounting seat 2. Each negative pressure component includes a negative pressure suction nozzle provided on the corresponding mounting seat 2, a buffer cup 401 located above the negative pressure suction nozzle, and a negative pressure tube connecting the negative pressure suction nozzle and the buffer cup 401. Each negative pressure suction nozzle is used to correspond one-to-one with the liquid injection hole of each cell 8 in each battery pack.

[0033] Therefore, by making the spacing between two adjacent mounting bases 2 adjustable, it is possible to match the use of battery cells 8 with different thicknesses. The mounting base 2 is locked onto the bracket 1 by the position locking structure 3, ensuring that the position of the mounting base 2 on the bracket 1 is stable and reliable, thereby improving the compatibility and reliability of the negative pressure device.

[0034] Based on the above overview, specifically, the pre-charge negative pressure device for the battery cells in this embodiment is mainly used to connect with the pre-charge equipment to assist the pre-charge equipment in performing the pre-charge operation of the battery cells 8.

[0035] Among them, the bracket 1 is used to support the components of the pre-charge negative pressure device for the battery cell, the mounting base 2 is used to support the negative pressure assembly, the negative pressure nozzle is used to connect to the liquid injection hole of the battery cell 8, the buffer cup 401 is used to temporarily store excess electrolyte and gas sucked out by negative pressure, and the negative pressure tube is used to connect the buffer cup 401 and the negative pressure nozzle.

[0036] The specific structural designs of the above-mentioned buffer cup 401, negative pressure nozzle and negative pressure tube can all be referenced from the relevant structural designs in existing battery cell pre-charge negative pressure devices, and will not be elaborated here.

[0037] Continue to combine Figure 1 , Figure 4 and Figure 6 As shown, in some exemplary embodiments, this embodiment may, for example, include locking structures 3 at each position including locking holes 301, elongated holes 302, and locking elements.

[0038] The locking hole 301 is provided on the bracket 1, and the elongated hole 302 is provided on each mounting base 2. The long axis of the elongated hole 302 extends along the length direction of the bracket 1. The locking member passes through the elongated hole 302 and is screwed into the locking hole 301. The position of each locking member in the elongated hole 302 is adjustable.

[0039] It is understandable that the locking element 303 and the elongated hole 302 cooperate to make the position of the locking element 303 on the elongated hole 302 adjustable. Its structure is relatively simple, easy to manufacture, and can better adjust the distance between adjacent mounting bases 2.

[0040] In specific implementation, each mounting base 2 is provided with a recess 203 corresponding to each elongated hole 302. The elongated holes 302 are located on the side of the recess 203 close to the bracket 1. Each recess 203 is connected to the corresponding elongated hole 302. The locking component can be, for example, a bolt. When the bolt is tightened in the locking hole 301, the side of the bolt that contacts the mounting base 2 abuts against the mounting base 2, and the nut of the bolt is located in the recess 203 to lock the mounting base 2 onto the bracket 1.

[0041] Continue to combine Figure 1 , Figure 3 and Figure 4 As shown, in some exemplary embodiments, this embodiment may, for example, include a support 1 comprising a main rod 101 and connecting seats 102 connected to both ends of the main rod 101.

[0042] Among them, the above multiple mounting seats 2 are slidably mounted on one end of the main rod 101 in sequence, and the bracket 1 is connected to the pre-charging device through the connecting seats 102 at both ends.

[0043] It is understandable that the main rod 101 facilitates the installation of the mounting base 2 on the bracket 1, and the connecting base 102 facilitates the installation of the bracket 1 on the pre-charging equipment. Furthermore, the structure of the main rod 101 and the connecting base 102 is relatively simple and easy to process and form.

[0044] In practice, a stepped structure is formed between the main rod 101 and the connecting seat 102 to facilitate the limiting of the mounting seat 2, so as to prevent the connecting seat 102 from coming off the bracket 1 during the position adjustment process.

[0045] Continue to combine Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, in some exemplary embodiments, taking the bracket 1 including the main rod 101 and the connecting seat 102 as an example, this embodiment may, for example, have a track 5 extending along the length direction of the main rod 101 on the main rod 101.

[0046] Each mounting base 2 is provided with a track groove 201, and each mounting base 2 is slidably mounted on the track 5 through the corresponding track groove 201.

[0047] It is understandable that by setting an integral track 5 on the main rod 101, the structure is easier to manufacture. Each mounting seat 2 is slidably set on the track 5 through the corresponding track groove 201. Through the cooperation of the track 5 and the track groove 201, a good guiding effect can also be achieved.

[0048] In specific implementation, the above track 5 can extend outward from the main rod 101 along the width direction of the bracket 1, and the track groove 201 of the above mounting seat 2 matches the track 5 to facilitate the assembly of the mounting seat 2 on the track 5.

[0049] Continue to combine Figure 1 , Figure 3 and Figure 4 As shown, in some exemplary embodiments, taking the main rod 101 with a track 5 as an example, in this embodiment, the length of the track 5 may be less than the length of the main rod 101, and an installation slot 6 may be formed at one end of the main rod 101, wherein each of the above mounting seats 2 is installed onto the track 5 from the installation slot 6.

[0050] Understandably, the installation slot 6 facilitates the assembly and disassembly of each mounting base 2 on the track 5, making operation convenient and aiding in design implementation.

[0051] In practical implementation, the mounting slot 6 can be located, for example, between the rail 5 and the connecting seat 102. The dimensions of the mounting slot 6 are such that the mounting seat 2 can be installed onto the rail 5. In addition, besides providing the mounting slot 6 at one end of the rail 5, the mounting slot 6 can also be provided at both ends of the rail 5. By providing the mounting slot 6 at both ends of the rail 5, the assembly efficiency of the mounting seat 2 can be improved, allowing the mounting seat 2 to be installed from two directions.

[0052] However, setting mounting slots 6 at both ends of the track 5 would limit the length of the track 5 and affect the overall structural layout of the bracket 1. If the track 5 were made to have the same length, the overall length of the bracket 1 with two mounting slots 6 would be longer than that with one mounting slot 6, thus increasing the overall length of the equipment. Therefore, in this embodiment, the bracket 1 with two mounting slots 6 was not used.

[0053] Continue to combine Figure 1 , Figure 3 and Figure 4 As shown, in some exemplary embodiments, taking the bracket 1 including the main rod 101 as an example, this embodiment may, for example, provide mounting holes 202 on each mounting base 2, install the negative pressure suction nozzle at one end of the mounting hole 202, and pass the negative pressure tube through the mounting hole 202.

[0054] The main rod 101 is provided with a clearance hole 1011 corresponding to the mounting hole 202. The clearance hole 1011 is used to avoid each negative pressure suction nozzle.

[0055] It is understandable that the mounting hole 202 facilitates the assembly of the negative pressure nozzle on the mounting base 2 and the arrangement of the negative pressure tube. The clearance hole 1011 can avoid the negative pressure nozzle, facilitating its smooth passage. On the other hand, it can also reduce weight, which is beneficial to the lightweight design of the bracket 1.

[0056] In practical implementation, the above mounting hole 202 is matched with the shape of the negative pressure tube, and the above clearance hole 1011 is a strip-shaped hole extending along the length of the main rod 101. The above mounting hole 202 and clearance hole 1011 allow the negative pressure nozzle to pass through the mounting base 2 and the main rod 101 and connect to the liquid injection hole of the battery cell 8, making the overall space occupied by the negative pressure device smaller and the structure more compact.

[0057] In addition to allowing the negative pressure nozzle to pass through the mounting base 2 and the main rod 101, a connecting piece can also be added to fix the negative pressure nozzle to one side of the corresponding mounting base 2.

[0058] However, compared to having the negative pressure nozzle pass through the mounting base 2 and the main rod 101, fixing the negative pressure nozzle to one side of the mounting base 2 increases the overall width of the negative pressure device, which is not conducive to the compact design of the negative pressure device. Furthermore, exposing the negative pressure nozzle to the outside makes it susceptible to collisions with other cooperating equipment, which is not convenient for the arrangement of the negative pressure device.

[0059] Continue to combine Figures 1 to 4 As shown, in some exemplary embodiments, this embodiment may, for example, allow multiple buffer cups 401 to be secured to the mounting bracket 7.

[0060] The connecting seat 102 is provided with a first connecting part 1021 and a second connecting part 1022. The first connecting part 1021 is used to connect the pre-charging device, and the second connecting part 1022 is used to connect the mounting bracket 7.

[0061] It is understandable that by setting the mounting bracket 7 to provide a basis for arranging multiple buffer cups 401, the mounting bracket 7 is connected to the bracket 1 through the second connecting part 1022, and the integration of the mounting bracket 7 and the bracket 1 can make the overall structure of the negative pressure device more compact.

[0062] In a specific implementation, the first connecting part 1021 is a connecting groove for connecting to the pre-charging device, and the second connecting part 1022 is a screw hole for connecting to the mounting bracket 7. The first connecting part 1021 can be assembled to the pre-charging device by bolts, and the mounting bracket 7 can be assembled to the second connecting part 1022 by bolts.

[0063] In addition to using a connecting groove and bolts to assemble the first connecting part 1021 with the pre-charging device, the connection method between the first connecting part 1021 and the pre-charging device can also refer to the connection method between the negative pressure device and the pre-charging device in the existing pre-charging device, which will not be elaborated here.

[0064] It is worth noting that, regarding the battery cell pre-charge negative pressure device of this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 6 As shown, it may include, for example, a bracket 1, a mounting base 2, a negative pressure assembly, and a mounting frame 7.

[0065] The bracket 1 is installed on the pre-charging device, the mounting seat 2 is slidably mounted on the bracket 1, the distance between two adjacent mounting seats 2 is adjustable, and each mounting seat 2 is provided with a position locking structure 3 between it and the bracket 1. Each position locking structure 3 is used to lock the corresponding mounting seat 2 on the bracket 1.

[0066] The negative pressure components are multiple, each corresponding to one of the mounting bases 2. Each negative pressure component includes a negative pressure suction nozzle on the corresponding mounting base 2, a buffer cup 401 above the negative pressure suction nozzle, and a negative pressure tube connecting the negative pressure suction nozzle and the buffer cup 401. Each negative pressure suction nozzle is used to correspond one-to-one with the liquid injection hole of each cell 8 in the battery pack.

[0067] The bracket 1 includes a main rod 101 and connecting seats 102 connected to both ends of the main rod 101. The main rod 101 is provided with a track 5 extending along the length of the main rod 101. Each mounting seat 2 is provided with a track groove 201. One end of the track 5 is provided with an installation slot 6 between it and the connecting seat 102. Each installation slot 6 is installed onto the track 5, and the track grooves 201 of each mounting seat 2 are slidably disposed on the track 5 in a one-to-one correspondence.

[0068] The buffer cup 401 is fixed on the mounting bracket 7. The connecting seat 102 includes a first connecting part 1021 for connecting the pre-charge device and a second connecting part 1022 for connecting the mounting bracket 7. The first connecting part 1021 is a connecting groove and the second connecting part 1022 is a screw hole.

[0069] Each mounting base 2 is provided with a mounting hole 202, a negative pressure suction nozzle is installed at one end of the mounting hole 202, a negative pressure tube is inserted into the mounting hole 202, and the main rod body 101 is provided with a clearance hole 1011 corresponding to the mounting hole 202. The clearance hole 1011 is used to avoid each negative pressure suction nozzle.

[0070] Each locking structure 3 includes a locking hole 301 on the bracket 1, an elongated hole 302 on each mounting base 2, and a locking member. The long axis of the elongated hole 302 extends along the length of the bracket 1. The locking member passes through the elongated hole 302 and is screwed into the locking hole 301. The position of the locking member in the elongated hole 302 is adjustable.

[0071] In the preferred embodiment of the pre-charge negative pressure device for the battery cell, the specific settings and arrangements of the bracket 1, mounting base 2, and negative pressure components can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the bracket 1, mounting base 2, and negative pressure components can also be referred to the descriptions in the above exemplary embodiments.

[0072] The pre-charge negative pressure device for battery cells in this embodiment adopts the above design. By making the spacing between two adjacent mounting seats 2 adjustable, it can be matched with the use of battery cells 8 of different thicknesses. The mounting seat 2 is locked on the bracket 1 by the position locking structure 3, ensuring that the position of the mounting seat 2 on the bracket 1 is stable and reliable. The mounting slot 6 and the track 5 facilitate the assembly and sliding of the mounting seat 2. The mounting bracket 7 facilitates the arrangement of the buffer cup 401, thereby improving the compatibility and reliability of the negative pressure device and helping the negative pressure device meet the usage requirements of battery cells 8 of different thicknesses.

[0073] An embodiment of the second aspect of this application provides a pre-charging device, which is provided with a cell pre-charging negative pressure device as described above.

[0074] In the pre-charging device of this embodiment, the above-mentioned cell pre-charging negative pressure device is used to connect to the liquid injection hole of each cell 8 and to draw out the excess electrolyte and gas in the cell 8 under negative pressure. It is generally connected to other related structures in the pre-charging device. The connection form between the above-mentioned cell pre-charging negative pressure device and other related structures in the pre-charging device can be referred to the connection form between the negative pressure device and related structures in the existing pre-charging device, and will not be described in detail here.

[0075] The pre-charging device of this embodiment, through the setting of the pre-charging negative pressure device for the battery cells as described above, can adjust the spacing between each mounting base 2, and lock the mounting base 2 on the bracket 1 through the position locking structure 3, thus being compatible with the usage requirements of battery cells 8 of different thicknesses.

[0076] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A battery cell pre-charge negative pressure device, characterized in that: It includes a bracket mounted on the pre-charging device, a plurality of mounting seats slidably mounted on the bracket, and a negative pressure assembly; The spacing between two adjacent mounting seats is adjustable, and each mounting seat is provided with a position locking structure between itself and the bracket. Each position locking structure is used to lock the corresponding mounting seat onto the bracket. The negative pressure components are multiple, each corresponding to one of the mounting bases. Each negative pressure component includes a negative pressure suction nozzle on the corresponding mounting base, a buffer cup above the negative pressure suction nozzle, and a negative pressure tube connecting the negative pressure suction nozzle and the buffer cup. Each negative pressure suction nozzle is used to correspond one-to-one with the liquid injection hole of each cell in the battery pack.

2. The cell pre-charge negative voltage device according to claim 1, characterized in that: The support includes a main rod and connecting seats at both ends of the main rod; Multiple mounting bases are slidably mounted sequentially on the main rod from one end of the main rod, and the bracket is connected to the pre-charging device through connecting bases at both ends.

3. The cell pre-charge negative voltage device according to claim 2, characterized in that: The main rod is provided with a track extending along the length of the main rod; Each of the mounting bases is provided with a track groove, and each of the mounting bases is slidably mounted on the track via the corresponding track groove.

4. The cell pre-charge negative voltage device according to claim 3, characterized in that: The length of the track is less than the length of the main rod, and an installation groove is formed at one end of the main rod. Each of the mounting brackets is installed onto the track from the mounting slot.

5. The cell pre-charge negative voltage device according to claim 2, characterized in that: Each of the mounting bases is provided with a mounting hole, the negative pressure suction nozzle is installed at one end of the mounting hole, and the negative pressure tube passes through the mounting hole; The main rod body is provided with clearance holes corresponding to the mounting holes, and the clearance holes are used to avoid each of the negative pressure suction nozzles.

6. The cell pre-charge negative voltage device according to claim 2, characterized in that: Multiple of the aforementioned buffer cups are fixed on the mounting bracket; The connector is provided with a first connecting part and a second connecting part. The first connecting part is used to connect the pre-charging device, and the second connecting part is used to connect the mounting bracket.

7. The cell pre-charge negative voltage device according to any one of claims 1 to 6, characterized in that: Each of the aforementioned position locking structures includes a locking hole provided on the bracket, an elongated hole provided on each of the aforementioned mounting bases, and a locking element; The long axis of the elongated hole extends along the length of the bracket. The locking member passes through the elongated hole and is screwed into the locking hole. The position of the locking member in the elongated hole is adjustable.

8. A pre-charging device, characterized in that: The pre-charging equipment is provided with a cell pre-charging negative pressure device as described in any one of claims 1 to 7.

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