Negative pressure cup assembly and battery detection device

Abstract

The invention discloses a negative pressure cup assembly and a battery detection device, and relates to the field of battery processing. In the application, a bus bar is mounted on a mounting rack, a negative pressure cup is communicated with the bus bar and a liquid injection port of a battery, and the negative pressure cup comprises a cup body mounted on the bus bar and a compression suction nozzle connected with the cup body; the air outlet of the cup body is correspondingly communicated with the air inlet of the bus bar when the cup body is mounted on the bus bar; the compression suction nozzle is communicated with the cup body and is pressed at a liquid injection port of the battery, and the mounting frame is detachably connected to the battery tray. The negative pressure cup assembly can be mounted on and dismounted from the battery tray by special equipment, so that the battery tray and the negative pressure cup assembly can be flexibly combined for use in formation and capacity grading processes, and meanwhile, a negative pressure suction nozzle directly seals a battery liquid injection opening in a manner that the negative pressure cup assembly follows the battery tray; and a nail inserting and pulling machine and an auxiliary logistics line do not need to be used for assistance.

Description

Technical Field

[0001] This application relates to the field of battery processing, specifically to a negative pressure cup assembly and a battery testing device. Background Technology

[0002] The manufacturing process of lithium-ion batteries is complex, and each step has a significant impact on the performance of lithium-ion batteries. Formation is an extremely important step, which is to activate the positive and negative electrode active materials and generate a solid electrolyte conductive film (SEI film) on the surface of the negative electrode active material.

[0003] In existing battery production, the negative pressure cup assembly is installed on the formation and capacity testing needle bed. This requires the installation of hardware facilities such as high-temperature chambers, ovens, high-temperature settling chambers, secondary liquid injection machines (the process of secondary liquid replenishment after formation), and nail insertion and removal machines to complete the battery formation and capacity testing. This leads to complex installation and maintenance, as well as numerous external pipelines, resulting in increased external interference. Summary of the Invention

[0004] This application provides a negative pressure cup assembly for use in a battery tray. The negative pressure cup assembly includes: a mounting bracket; a manifold mounted on the mounting bracket, the manifold having an air inlet; and a negative pressure cup for connecting the manifold to the battery's filling port. The negative pressure cup includes a cup body mounted on the manifold and a compression nozzle connected to the cup body. The cup body has an air outlet, which corresponds to the air inlet when the cup body is mounted on the manifold. The compression nozzle communicates with the cup body and is used to press against the battery's filling port, capable of squeezing between the cup body and the battery. The mounting bracket is detachably connected to the battery tray.

[0005] This application provides a battery testing device, comprising: a battery tray for holding batteries; and the aforementioned negative pressure cup assembly, detachably connected to the battery tray.

[0006] The beneficial effects of this application are as follows: the installation and removal of the negative pressure cup assembly on the battery tray can be completed by special equipment, so that the battery tray and the negative pressure cup assembly can be used flexibly in combination during the formation and capacity testing processes. At the same time, the negative pressure cup assembly following the battery tray allows the negative pressure nozzle to directly seal the battery filling port, eliminating the need for the use of a nail insertion and removal machine and auxiliary logistics line. For example, the ovens, high-temperature chambers, high-temperature settling chambers, nail insertion and removal machines required in the production process can be eliminated, and the process flow can be simplified, the manufacturing cost of the formation and capacity testing needle bed storage can be reduced, and external interference can be reduced.

[0007] Furthermore, by directly connecting the negative pressure cup body to the manifold to achieve conductivity, the need for connecting pipelines can be minimized, resulting in a simpler overall structure for the negative pressure cup assembly and reducing external interference. Moreover, the design of the compression nozzle further reduces the need for other structures to install and support it, simplifying the overall structure of the negative pressure cup assembly. Additionally, when the negative pressure cup assembly is installed on the battery tray, the compression nozzle can directly engage with the battery without additional steps or supporting structures. The cup body and battery simply compress the nozzle, achieving a seal at the injection port through this compression. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the battery detection device in some embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the battery detection device in the illustrated embodiment from another perspective; Figure 3 for Figure 1 A partial structural diagram of the battery tray containing the battery in the illustrated embodiment; Figure 4 for Figure 1 The diagram shown is a partial structural schematic of the battery tray and negative pressure cup assembly in the embodiment shown. Figure 5 for Figure 4 A schematic diagram of the negative pressure cup assembly in some embodiments shown in the illustration; Figure 6 for Figure 5 A schematic diagram of the negative pressure cup assembly in some embodiments shown in the illustration; Figure 7 for Figure 4 An exploded view of the manifold and negative pressure cup in the embodiment shown; Figure 8 for Figure 7 An exploded view from another perspective when the manifold and negative pressure cup are engaged in the embodiment shown; Figure 9 for Figure 8 An exploded view of the negative pressure cup in some embodiments shown in the illustration; Figure 10 for Figure 9 Cross-sectional view of the negative pressure cup in some embodiments shown in the illustration; Figure 11 for Figure 10 The diagram shown is a structural schematic of the compression nozzle in some embodiments. Figure 12 for Figure 1 The diagram shown illustrates the assembly of the battery detection mechanism with the battery in the embodiment. Figure 13 for Figure 12 The schematic diagram of the probe assembly in some embodiments is shown in the figure. Figure 14 for Figure 13 Exploded views of the probe assembly in some embodiments shown; Figure 15 for Figure 12 Schematic diagrams of the probe assembly in some other embodiments as shown in the illustrated embodiment; Figure 16 for Figure 15 Exploded views of the probe assembly in some embodiments shown; Figure 17 for Figure 15 Cross-sectional view of the probe assembly in some embodiments shown in the illustration; Figure 18 for Figure 13 The schematic diagram of the probe assembly in some embodiments is shown in the figure. Figure 19 for Figure 18 The probe assembly shown in the embodiments is a cross-sectional view in some embodiments. Detailed Implementation

[0010] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0011] The reference to "embodiment" in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0012] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are 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 in this application.

[0013] Furthermore, in some embodiments, a technical feature is described, which may be used in conjunction with another technical feature, or even with multiple technical features, in this embodiment. However, the structure and function of this technical feature, if clearly and reasonably described, should not be affected or limited by other technical features in this embodiment, but can be further applied to other embodiments that include this technical feature, so that the technical feature described in other embodiments can also be combined with at least part of the structure and / or at least part of the function of the technical feature described in this embodiment. The new embodiments formed thereby should also fall within the scope of protection of this application.

[0014] This application describes a battery testing device. This device can be applied to battery formation and is therefore referred to as a "battery formation apparatus." Battery formation is a crucial step in battery processing. The battery testing device can apply negative pressure to the battery and simultaneously perform evacuation to remove internal gases, minimizing damage to the battery. In a further embodiment, the device can also measure the battery temperature to prevent the battery from exploding due to overheating during formation.

[0015] Of course, battery testing devices can also be used for battery capacity grading, and thus can be called "battery capacity grading devices". During battery capacity grading, the battery testing device charges and discharges the battery to obtain evaluation data such as the battery's actual capacity and internal resistance. In the process of selecting qualified batteries, selection can be based on this evaluation data, such as the battery's actual capacity and internal resistance.

[0016] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the battery detection device in some embodiments of this application. Figure 2 for Figure 1 The illustrated embodiment is a schematic diagram of the battery detection device from another perspective. The battery detection device 100 may include a battery tray 10 for placing a battery 40, a negative pressure cup assembly 20 detachably connected to the battery tray 10, and a battery detection mechanism 30 detachably connected to the battery tray 10.

[0017] The battery tray 10 can be used to place the battery 40 and can support the mounting of the negative pressure cup assembly 20 and the battery testing mechanism 30. The battery tray 10 can be used for battery formation and / or battery capacity testing. The negative pressure cup assembly 20 can apply negative pressure to the battery 40, and at the same time, it can also perform evacuation treatment inside the battery 40 to remove the gas inside the battery 40 and avoid damage to the battery 40 as much as possible. Of course, the negative pressure cup assembly 20 can be omitted when battery formation is not performed. The battery testing mechanism 30 can be used to charge and discharge the battery 40, and can also be used to perform charge and discharge tests during battery capacity testing. In some embodiments, the battery testing mechanism 30 can be fixed to the negative pressure cup assembly 20 by welding, screwing, snapping, bonding or other connection methods known to those skilled in the art, so that the battery testing mechanism 30 can be detachably connected to the battery tray 10 when the negative pressure cup assembly 20 and the battery tray 10 are detachably connected.

[0018] Please see Figure 1 and Figure 3 , Figure 3 for Figure 1 The illustrated embodiment shows a partial structural diagram of the battery tray 10 containing the battery 40. The battery tray 10 may have a locking mechanism 11, which can be used to lock or unlock the negative pressure cup assembly 20, enabling a detachable connection between the battery tray 10 and the negative pressure cup assembly 20. When the locking mechanism 11 locks the negative pressure cup assembly 20, the battery tray 10 and the negative pressure cup assembly 20 are connected together. When the locking mechanism 11 unlocks the negative pressure cup assembly 20, the negative pressure cup assembly 20 can be removed from the battery tray 10.

[0019] The locking mechanism 11 can be disposed around the battery tray 10 or on the top of the battery tray 10. In some embodiments, the locking mechanism 11 may also serve to support the negative pressure cup assembly 20.

[0020] Please see Figure 4 , Figure 4 for Figure 1The illustrated embodiment shows a partial structural diagram of the battery tray 10 and the negative pressure cup assembly 20 in cooperation. The locking mechanism 11 may include a support base 111 for supporting the negative pressure cup assembly 20, a guide member 112 slidably connected to the support base 111, and an elastic member, such as a first elastic member 113, abutting against the guide member 112. The support base 111 can support and mount the guide member 112 and the elastic member, such as the first elastic member 113. Of course, the support base 111 can also support the negative pressure cup assembly 20. When the negative pressure cup assembly 20 is installed on the locking mechanism 11, the negative pressure cup assembly 20 can be placed on the support base 111 to achieve stable placement of the negative pressure cup assembly 20 on the battery tray 10. The guide member 112 can slide relative to the support base 111 to a position to lock or unlock the negative pressure cup assembly 20. Furthermore, when the guide member 112 slides relative to the support base 111, the negative pressure cup assembly 20 can be unlocked, facilitating its removal; conversely, it can be locked, facilitating its installation on the battery tray 10. An elastic element, such as the first elastic element 113, can drive the guide member 112 to slide to the locked position. Under the force of the elastic element, such as the first elastic element 113, the guide member 112 remains in the locked position. Therefore, when the user removes the negative pressure cup assembly 20, they need to overcome the force of the elastic element, such as the first elastic element 113, so that the guide member 112 can slide from the locked position to the unlocked position. Additionally, when the user does not apply force to the guide member 112, the elastic element, such as the first elastic element 113, drives the guide member 112 to slide to the locked position, thus resetting the guide member 112.

[0021] Understandably, the guide member 112 only needs to slide to lock or unlock the negative pressure cup assembly 20, while the support base 111 and elastic elements such as the first elastic element 113 can be omitted, and other structures that cooperate with the guide member 112 can even be provided. In some embodiments, the guide member 112 can slide into a slot or hole or other structure provided in the negative pressure cup assembly 20 to achieve locking. Furthermore, the guide member 112 can slide to the position where the negative pressure cup assembly 20 is locked or unlocked.

[0022] The support base 111 can support the negative pressure cup assembly 20 in a first direction and abut against the negative pressure cup assembly 20 in a second direction, thereby limiting the negative pressure cup assembly 20 in both directions. In some embodiments, the first direction is perpendicular to the second direction. In some embodiments, the first direction can be a vertical direction or a direction intersecting the vertical direction. In some embodiments, the second direction can be a horizontal direction.

[0023] The guide member 112 can slide along a third direction and can partially slide to the side of the negative pressure cup assembly 20 opposite to the support base 111 along the first direction, so as to cooperate with the support base 111 in the first direction to further limit the negative pressure cup assembly 20 and fix the negative pressure cup assembly 20 on the battery tray 10. In a further embodiment, under the action of an elastic member, such as the first elastic member 113, the guide member 112 can abut against the negative pressure cup assembly 20 along a third direction to press the negative pressure cup assembly 20 against the battery tray 10 in the first direction.

[0024] In some embodiments, the third direction may be parallel to the second direction. In some embodiments, the third direction may be perpendicular to the first direction.

[0025] The elastic element, such as the first elastic element 113, may be made of an elastic material and may have the ability to deform elastically. In some embodiments, the elastic element, such as the first elastic element 113, may be a spring, a coil spring, a torsion spring, or an elastic rod, etc., or may be other materials or structures well known to those skilled in the art, which will not be elaborated further.

[0026] In some embodiments, an elastic element, such as a first elastic element 113, may be disposed on the battery tray 10 and abut against the guide 112. In some embodiments, the elastic element, such as the first elastic element 113, may be disposed between the support 111 and the guide 112.

[0027] In some embodiments, a fixing portion 12 may be provided on the battery tray 10 for mounting a locking mechanism 11, such as a support base 111. In some embodiments, a guide member 112 and / or an elastic member, such as a first elastic member 113, may be mounted on the fixing portion 12.

[0028] In some embodiments, please refer to Figure 4 The guide member 112 has a gripping part 1121 in a direction perpendicular to the sliding direction. The gripping part 1121 can be operated by the user, so that the user can push the guide member 112 to slide by pushing the gripping part 1121, which facilitates the disassembly and installation of the negative pressure cup assembly 20.

[0029] In some embodiments, an elastic element, such as a first elastic element 113, may be sleeved on the guide 112, with one end abutting against the support 111 or other structures on the battery tray 10, and the other end abutting against the grip 1121 or other structures on the guide 112. In a further embodiment, the elastic element, such as the first elastic element 113, may be a spring.

[0030] The negative pressure cup assembly 20 can be connected to the battery tray 10 by snap-fit, plug-in, screw-in or other detachable connection methods known to those skilled in the art.

[0031] Please see Figure 1 , Figure 2, Figure 3 and Figure 4 The negative pressure cup assembly 20 can be used to seal the electrolyte inlet 401 of the battery 40. The negative pressure cup assembly 20 may include a mounting bracket 21 detachably connected to the battery tray 10, a manifold 22 mounted on the mounting bracket 21, and a negative pressure cup 23 for connecting the manifold 22 to the electrolyte inlet 401 of the battery 40. The mounting bracket 21 can support the manifold 22 and the negative pressure cup 23, and the manifold 22 can communicate with at least one negative pressure cup 23 to collect gas. The negative pressure cup 23 can create a negative pressure environment for the battery 40 at the electrolyte inlet 401, promoting sufficient contact between the electrolyte and electrode materials in the battery 40, improving battery capacity consistency, and reducing the waste of electrolyte evaporating into the air. The negative pressure cup 23 can collect the gas obtained from the battery 40 and transport the gas to the manifold 22, further enabling gas collection.

[0032] Please see Figure 5 , Figure 5 for Figure 4 The illustrated embodiment shows a schematic diagram of the negative pressure cup assembly 20 in some embodiments. The negative pressure cup assembly 20 may further include a negative pressure source 201. The negative pressure source 201 may be connected to the manifold 22. The negative pressure source 201 can generate a negative pressure difference, which can be conducted to the negative pressure cup 23 through the manifold 22, thereby creating a negative pressure environment for the battery 40 at the liquid injection port 401.

[0033] In some embodiments, the negative pressure source 201 may be a vacuum pump, a vacuum generator, or other devices known to those skilled in the art that can generate negative pressure, etc., which will not be described in detail. In some embodiments, the negative pressure cup assembly 20 can collect the evaporated electrolyte through the negative pressure source 201, thereby avoiding waste of electrolyte or pollution to the environment.

[0034] Please see Figure 4 The mounting bracket 21 can be detachably connected to the locking mechanism 11 to be locked or unlocked by the locking mechanism 11. For example, the guide member 112 can slide relative to the support 111 to a position where the mounting bracket 21 is locked or unlocked. In some embodiments, the support 111 can support the mounting bracket 21 in a first direction and abut against the mounting bracket 21 in a second direction, thereby limiting the mounting bracket 21 in both directions. In some embodiments, the locking mechanism 11 can also be part of the negative pressure cup assembly 20.

[0035] Mounting bracket 21 can be placed above battery 40 to mount manifold 22 and / or negative pressure cup 23 above battery 40, so that manifold 22 and negative pressure cup 23 can mate with battery 40.

[0036] Mounting bracket 21 may include two support rods, such as a first support rod 211 and a second support rod 212, that can be detachably connected to both sides of battery tray 10. In some embodiments, the two support rods, such as the first support rod 211 and the second support rod 212, can be detachably connected by locking mechanism 11. For example, guide member 112 can slide relative to support base 111 to a position that locks or unlocks the first support rod 211. For example, guide member 112 can slide relative to support base 111 to a position that locks or unlocks the second support rod 212. In some embodiments, support base 111 can support the first support rod 211 in a first direction and abut against the first support rod 211 in a second direction, thereby limiting the first support rod 211 in both directions. In some embodiments, support base 111 can support the second support rod 212 in a first direction and abut against the second support rod 212 in a second direction, thereby limiting the second support rod 212 in both directions.

[0037] Mounting bracket 21 may also include a connecting rod 213 that connects two support rods, such as a first support rod 211 and a second support rod 212. The connecting rod 213 can be positioned above the battery 40. In some embodiments, the connecting rod 213 can connect the first support rod 211 and the second support rod 212, making the mounting bracket 21 a single, integral structure.

[0038] In some embodiments, a negative pressure gas collection port 203 may be provided on the connecting rod 213. The negative pressure gas collection port 203 can connect to the interior of the manifold 22. The negative pressure gas collection port 203 allows it to connect to the interior of at least one manifold 22 on the mounting frame 21, simplifying the arrangement of the connecting pipeline and minimizing the extension of excessive connecting pipelines outside the mounting frame 21. The connection to the negative pressure source 201 can be achieved solely through the connecting pipeline at the negative pressure gas collection port 203. In some embodiments, a control valve may be provided between the negative pressure gas collection port 203 and the negative pressure source 201 to control the opening and closing of the pipeline. In some embodiments, a control valve may be provided between the negative pressure gas collection port 203 and at least one manifold 22 to control the opening and closing of the pipeline.

[0039] Please see Figure 4 and Figure 6 , Figure 6 for Figure 5 The illustrated embodiment shows a schematic diagram of the negative pressure cup assembly 20 in some embodiments. A positive pressure gas collection port 202 may be provided on the connecting rod 213. The positive pressure gas collection port 202 is connected to the positive pressure interface of a control valve, such as a pilot valve 204, and the negative pressure interface of the control valve, such as the pilot valve 204, is connected to the negative pressure gas collection port 203. The connection port of the control valve, such as the pilot valve 204, may be connected to the interior of at least one manifold 22.

[0040] Positive pressure air collection port 202 can be connected to positive pressure source 205. Negative pressure air collection port 203 can be connected to negative pressure source 201.

[0041] Furthermore, the air pressure at the positive pressure collection port 202 can be adjusted to a first air pressure by the positive pressure source 205, which can then open the control valve, such as the pilot valve 204, so that the negative pressure collection port 203 can be connected to the interior of at least one manifold 22 through the control valve, such as the pilot valve 204. A negative pressure environment can then be generated using the negative pressure source 201.

[0042] Furthermore, the air pressure at the positive pressure collection port 202 can be adjusted to a second air pressure by the positive pressure source 205, thereby causing the control valve, such as the pilot valve 204, to be closed, so that the negative pressure collection port 203 can be disconnected from the interior of at least one manifold 22 through the control valve, such as the pilot valve 204.

[0043] In some embodiments, the first pressure may be greater than the second pressure.

[0044] Furthermore, in some embodiments, the pilot valve 204 may be a normally closed pilot valve. In some embodiments, the pilot valve 204 may be a pneumatically controlled direct-acting pilot valve.

[0045] Of course, in order to achieve control, the type of control valve can be varied and is not limited to the embodiments listed here. Other types are also possible, which will not be elaborated here.

[0046] Please see Figure 4 and Figure 7 , Figure 7 for Figure 4 The diagram shows an exploded view of the manifold 22 and the negative pressure cup 23 in the illustrated embodiment. The manifold 22 can connect two support rods, such as the first support rod 211 and the second support rod 212, and can be located on one side of the connecting rod 213, or even on both sides of the connecting rod 213. For example, the first manifold 2201 is located on one side of the connecting rod 213, and the second manifold 2202 is located on the other side of the connecting rod 213. This simplifies the distribution and layout of the connecting pipes between the manifold 22 and the negative pressure cup 23.

[0047] The manifold 22 can be positioned above the battery 40 in the battery tray 10 so that the negative pressure cup 23 on the manifold 22 can engage with the battery 40. In some embodiments, the manifold 22 can press the negative pressure cup 23 against the inlet 401 of the battery 40. That is, the negative pressure cup 23 can be squeezed between the manifold 22 and the battery 40.

[0048] In some embodiments, the manifold 22 may have an air inlet 2001 for communication with the negative pressure cup 23. In some embodiments, when the negative pressure cup 23 is mounted on the manifold 22, the air inlet 2001 can be connected to the negative pressure cup 23 in a corresponding manner, thereby minimizing the arrangement of connecting pipes and simplifying the structure.

[0049] In some embodiments, the manifold 22 may have a mounting portion 221. An air inlet 2001 is provided on the mounting portion 221, so that when the negative pressure cup 23 is mounted on the manifold 22, for example, the mounting portion 221, the air inlet 2001 can be connected to the negative pressure cup 23. Furthermore, the negative pressure cup 23 can be connected to the manifold 22, for example, the mounting portion 221, without additional piping.

[0050] In some embodiments, the mounting portion 221 is located on the side of the busbar 22 facing the battery 40 in the battery tray 10.

[0051] In some embodiments, the manifold 22 is provided with a connection port 2002 for communication with the negative pressure source 201. In some embodiments, the connection port 2002 may communicate with the negative pressure air collection port 203. In some embodiments, the connection port 2002 may be located on the side of the manifold 22 facing the battery 40 in the battery tray 10 to simplify the connection pipeline, improve the appearance, and facilitate processing, so that the connection port 2002 can be processed together with the air inlet 2001.

[0052] Please see Figure 4 The negative pressure cup assembly 20 may also include a pressure regulating assembly 24. The manifold 22 can be mounted on the mounting bracket 21, for example, on two support rods, via the pressure regulating assembly 24. The pressure regulating assembly 24 can adjust the distance between the manifold 22 and the battery 40 in the battery tray 10 (i.e., it can also adjust the distance between the negative pressure cup 23 and the battery 40), and can apply a force to the manifold 22 to move it closer to the battery 40, thereby adjusting the seal between the negative pressure cup 23 and the battery 40.

[0053] When it is necessary to use the negative pressure cup 23 in conjunction with the battery 40, the user can overcome the force exerted by the pressure regulating component 24 on the manifold 22, causing the negative pressure cup 23 to move upward. This allows for further adjustment of the relative position between the negative pressure cup 23 and the battery 40, and the pressure regulating component 24 can then be used to ensure the effective coordination between the negative pressure cup 23 and the battery 40.

[0054] The pressure regulating assembly 24 may include a guide seat 241 mounted on the mounting bracket 21, for example, two support rods, and an elastic element, such as a second elastic element 242, abutting against the busbar 22. The busbar 22 is slidably connected to the guide seat 241 to slide towards or away from the battery 40. The elastic element, such as the second elastic element 242, can drive the busbar 22 to slide towards the battery 40. When the busbar 22 slides towards the battery 40, it can cause the negative pressure cup 23 to slide together, making the negative pressure cup 23 fit more closely with the battery 40.

[0055] In some embodiments, the elastic element, such as the second elastic element 242, may be made of an elastic material and may have elastic deformation capability. In some embodiments, the elastic element, such as the second elastic element 242, may be a spring, coil spring, torsion spring, or elastic rod, etc., or may be other materials or structures well known to those skilled in the art, which will not be elaborated further.

[0056] In some embodiments, an elastic element, such as a second elastic element 242, may be disposed on the mounting bracket 21 and abut against the busbar 22. In some embodiments, the elastic element, such as the second elastic element 242, may be disposed between the busbar 22 and the guide seat 241.

[0057] In some embodiments, the busbar 22 may have a connecting block 222 to cooperate with the pressure regulating assembly 24. In some embodiments, the connecting block 222 may be located at the bottom of the busbar 22. In some embodiments, the connecting block 222 may be located at both ends of the busbar 22. In some embodiments, the busbar 22, for example, the connecting block 222, may be mounted on the mounting bracket 21, for example, two support rods, via the pressure regulating assembly 24. The pressure regulating assembly 24 can adjust the distance between the busbar 22, for example, the connecting block 222, and the battery 40 in the battery tray 10 (i.e., it can also adjust the distance between the negative pressure cup 23 and the battery 40), and can apply a force to the busbar 22, for example, the connecting block 222, causing the busbar 22 to move towards the side closer to the battery 40, thereby adjusting the seal between the negative pressure cup 23 and the battery 40. Under this force, the connecting block 222 can drive the busbar 22 to slide towards the side closer to the battery 40.

[0058] When it is necessary to use the negative pressure cup 23 in conjunction with the battery 40, the user can overcome the force exerted by the pressure regulating component 24 on the manifold 22, such as the connecting block 222, so that the negative pressure cup 23 moves upward. This can further adjust the relative position of the negative pressure cup 23 and the battery 40, and the pressure regulating component 24 can then be used to ensure the effective coordination between the negative pressure cup 23 and the battery 40.

[0059] In some embodiments, an elastic element, such as the second elastic element 242, may abut against the busbar 22, such as the connecting block 222. In some embodiments, the busbar 22, such as the connecting block 222, may be slidably connected to the guide seat 241 to slide towards or away from the battery 40. The elastic element, such as the second elastic element 242, may drive the busbar 22, such as the connecting block 222, to slide towards the side closer to the battery 40. When the connecting block 222 slides towards the side closer to the battery 40, it may cause the busbar 22 and the negative pressure cup 23 to slide together, making the negative pressure cup 23 fit more closely with the battery 40.

[0060] In some embodiments, an elastic element, such as a second elastic element 242, may be disposed on the mounting bracket 21 and abut against the busbar 22, such as the connecting block 222. In some embodiments, the elastic element, such as the second elastic element 242, may be disposed between the busbar 22, such as the connecting block 222, and the guide seat 241.

[0061] Please see Figure 4 , Figure 8 and Figure 9 , Figure 8 for Figure 7 An exploded view from another perspective of the manifold 22 and the negative pressure cup 23 in the embodiment shown. Figure 9 for Figure 8 The diagram shows an exploded view of the negative pressure cup 23 in some embodiments. The negative pressure cup 23 can be installed on the manifold 22, for example, the mounting part 221, to achieve communication with the manifold 22, and can be pressed between the manifold 22 and the battery 40 to achieve cooperation with the battery 40.

[0062] The negative pressure cup 23 may include a cup body 231 mounted on a manifold 22, for example, a mounting portion 221, and a compression nozzle 232 connected to the cup body 231. When the cup body 231 is mounted on the manifold 22, for example, the mounting portion 221, communication is achieved between the cup body 231 and the manifold 22, for example, the air inlet 2001. The compression nozzle 232 can be squeezed between the cup body 231 and the battery 40. By providing the compression nozzle 232, the need for other structures for mounting and supporting the compression nozzle 232 can be further reduced, making the overall structure of the negative pressure cup assembly 20 simpler. Furthermore, when the negative pressure cup assembly 20 is installed on the battery tray 10, the compression nozzle 232 can directly engage with the battery 40 at the liquid inlet 401 without any additional operating steps or supporting structures. The cup body 231 and the battery 40 simply squeeze the compression nozzle 232, thereby compressing the nozzle 232. Based on the compression of the compression nozzle 232 by the cup body 231 and the battery 40, the sealing of the compression nozzle 232 at the liquid inlet 401 is achieved.

[0063] In some embodiments, the negative pressure cup 23, for example, the cup body 231, has an air outlet 2003. When the negative pressure cup 23, for example, the cup body 231, is installed on the manifold 22, for example, the mounting part 221, the air outlet 2003 is connected to the air inlet 2001. This can minimize the need for connecting pipes between the negative pressure cup 23, for example, the cup body 231, and the manifold 22, for example, the mounting part 221, making the overall structure of the negative pressure cup assembly 20 simpler.

[0064] In some embodiments, the negative pressure cup 23, for example, the cup body 231, has an assembly portion 2311, and an air outlet 2003 is disposed on the assembly portion 2311. Furthermore, when the negative pressure cup 23, for example, the cup body 231, is mounted on the manifold 22, for example, the mounting portion 221, the mounting portion 221 is connected to the assembly portion 2311, and at the same time, the air inlet 2001 and the air outlet 2003 are correspondingly connected.

[0065] Please see Figure 9 and Figure 10 , Figure 10 for Figure 9 The illustrated embodiment shows a cross-sectional view of the negative pressure cup 23 in some embodiments. The cup body 231 has a connector hole 2312 for insertion and engagement with the compression nozzle 232. In some embodiments, a plurality of protruding ribs 2313 are provided on the inner wall of the connector hole 2312, arranged circumferentially along the connector hole 2312, to provide an interference fit with the compression nozzle 232, thereby enhancing connection stability and sealing effect.

[0066] Please see Figure 9 , Figure 10 and Figure 11 , Figure 11 for Figure 10 The illustrated embodiment shows a schematic diagram of the compression nozzle 232 in some embodiments. The compression nozzle 232 has a plurality of grooves 2301 arranged side by side along the axial direction of the compression nozzle 232, each groove 2301 being circumferentially disposed on the outer peripheral surface of the compression nozzle 232. The grooves 2301 allow the compression nozzle 232 to be compressed, giving it deformability, and thus allowing for axial length adjustment to achieve compression between the cup body 231 and the battery 40.

[0067] In some embodiments, the compression nozzle 232 may be a bellows structure.

[0068] In some embodiments, the compression nozzle 232 may include an axially connected insertion section 2321 and a sealing section 2322. The insertion section 2321 may be inserted into the cup body 231, and the sealing section 2322 may be engaged with the liquid filling port 401 of the battery 40.

[0069] In some embodiments, the connector segment 2321 may be placed within the connector hole 2312. In a further embodiment, it may be interference-fitted with a plurality of protrusions 2313. In some embodiments, a plurality of grooves 2301 may be provided within the connector segment 2321 so that the connector hole 2312 guides the connector segment 2321, thereby compressing the connector segment 2321.

[0070] Please see Figure 1The battery detection mechanism 30 can be connected to the battery tray 10 via snap-fit, plug-in, screw-fit, or other detachable connection methods known to those skilled in the art. In some embodiments, the battery detection mechanism 30 can be disposed on the negative pressure cup assembly 20, for example, the mounting bracket 21. In some embodiments, the battery detection mechanism 30 can be connected to the negative pressure cup assembly 20, for example, the mounting bracket 21, by screws. In some embodiments, the mounting bracket 21 can be part of the battery detection mechanism 30. Furthermore, the battery detection mechanism 30 can be mounted on the battery tray 10 in a manner that the negative pressure cup assembly 20 is mounted on the battery tray 10.

[0071] In some embodiments, the battery testing mechanism 30 can be used to connect the batteries 40 in the battery tray 10 in series for subsequent capacity testing steps.

[0072] Please see Figure 1 and Figure 12 , Figure 12 for Figure 1 The illustrated embodiment shows an assembly diagram of the battery testing mechanism 30 and the battery 40 in operation. The battery testing mechanism 30 may include multiple probe assemblies 31, a bracket 32, and multiple strands of wire 33. The multiple probe assemblies 31 may be mounted on the bracket 32 ​​and connected by the multiple strands of wire 33, so that when the multiple probe assemblies 31 contact the tabs 41 of the battery 40 on the battery tray 10, the batteries 40 on the battery tray 10 are connected in series.

[0073] Multiple probe assemblies 31 can be classified based on the tabs 41 of the battery 40. When the tabs 41 include a positive tab 411 and a negative tab 412, the multiple probe assemblies 31 may include a positive probe assembly 301 connected to the positive tab 411 and a negative probe assembly 302 connected to the negative tab 412.

[0074] In some embodiments, the positive electrode probe assembly 301 can be arranged in a row, the negative electrode probe assembly 302 can be arranged in a row, and the multi-strand wires 33 can be staggered to connect the positive electrode probe assembly 301 and the negative electrode probe assembly 302, so that when the multiple probe assemblies 31 contact the tabs 41 of the batteries 40 on the battery tray 10, the batteries 40 on the battery tray 10 are connected in series. In addition, the multi-strand wires 33 can be arranged neatly and without disorder.

[0075] The positive electrode probe assembly 301 and the negative electrode probe assembly 302, which are corresponding to each other, are respectively connected to the tabs 41 of the same battery 40. The positive electrode probe assembly 301 is connected to the positive electrode tab 411, and the negative electrode probe assembly 302 is connected to the negative electrode tab 412.

[0076] The positive probe assembly 301 and negative probe assembly 302, which are staggered, are respectively connected to the tabs 41 of different batteries 40. The positive probe assembly 301 is connected to the positive tab 411 of one battery 40, and the negative probe assembly 302 is connected to the negative tab 412 of another battery 40, so that the two batteries 40 are connected in series. In addition, the multi-strand wires 33 can be neatly arranged without being messy, and the routing length of the wires 33 can also be reduced, eliminating the need for a connecting mechanism for wire switching.

[0077] In some embodiments, please refer to Figure 2 In two adjacent batteries 40, the positive electrode probe assembly 301 corresponding to one battery 40 is connected to the negative electrode probe assembly 302 corresponding to the other battery 40 via a wire 33, so that multiple probe assemblies 31 and multiple wires 33 connect the batteries 40 in the battery tray 10 in series. Figure 2 In the diagram, the arrow points in the direction of the current in conductor 33. In some embodiments, Figure 2 The rightmost positive probe assembly 301 can be used as the first terminal 3011, and the leftmost negative probe assembly 302 can be used as the second terminal 3012. The first terminal 3011 and the second terminal 3012 work together to connect other devices.

[0078] Please see Figure 2 The multiple wires are arranged neatly and without disorder.

[0079] In some embodiments, the bracket 32 ​​may include a positive electrode bracket 321 for mounting the positive electrode probe assembly 301 and a negative electrode bracket 322 for mounting the negative electrode probe assembly 302. The positive electrode bracket 321 and the negative electrode bracket 322 may be arranged side-by-side. In some embodiments, the positive electrode bracket 321 and the negative electrode bracket 322 may be part of the mounting frame 21. Furthermore, the positive electrode probe assembly 301 and the negative electrode probe assembly 302 may be mounted on the mounting frame 21.

[0080] In some embodiments, the positive electrode holder 321 may be arranged side by side with the busbar 22. In some embodiments, the negative electrode holder 322 may be arranged side by side with the busbar 22.

[0081] In some embodiments, the positive electrode support 321 may be located on one side of the busbar 22, and the negative electrode support 322 may be on the other side of the busbar 22, allowing multiple strands of wire 33 to extend from the positive electrode probe assembly 301 through the top of the busbar 22 to connect with the negative electrode probe assembly 302, thereby achieving a physical separation between the connecting pipe and the wires to prevent interference. Furthermore, the multiple strands of wire 33 can be neatly arranged without being messy. In some embodiments, the multiple strands of wire 33 connected to the positive electrode probe assembly 301 can extend through the negative pressure cup assembly 20, for example, the side of the busbar 22 opposite to the battery 40, to connect with the negative electrode probe assembly 302.

[0082] In some embodiments, the outer layer of the conductor 33 is an insulating layer, which can prevent circuit misconnection or short circuit and ensure circuit safety.

[0083] In some embodiments, the positive electrode bracket 321 may be connected to two support rods, such as a first support rod 211 and a second support rod 212. Additionally, the positive electrode bracket 321 may also enhance the connection strength and stability of the mounting bracket 21.

[0084] In some embodiments, the negative electrode bracket 322 may connect to two support rods, such as a first support rod 211 and a second support rod 212. Additionally, the negative electrode bracket 322 may also enhance the connection strength and stability of the mounting bracket 21.

[0085] Please see Figure 12 The brackets 32, such as the positive electrode bracket 321 and the negative electrode bracket 322, may be provided with positioning holes 3201 to position and install the probe assembly 31. This facilitates the assembly of the battery testing mechanism 30 and ensures its normal operation, reducing the probability of unusability due to assembly problems. In some embodiments, the probe assembly 31 may be partially placed within the positioning hole 3201.

[0086] Please see Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 and Figure 19 , Figure 13 for Figure 12 The schematic diagram of the probe assembly 31 in some embodiments is shown in the illustration. Figure 14 for Figure 13 Exploded view of probe assembly 31 in some embodiments shown in the illustration. Figure 15 for Figure 12 The schematic diagram of the probe assembly 31 in the illustrated embodiment is shown in other embodiments. Figure 16 for Figure 15 Exploded view of probe assembly 31 in some embodiments shown in the illustration. Figure 17 for Figure 15 The probe assembly 31 shown in the embodiment is a cross-sectional view in some embodiments. Figure 18 for Figure 13 The schematic diagram of the probe assembly 31 in some embodiments is shown in the illustration. Figure 19 for Figure 18 The probe assembly 31 in the illustrated embodiment is a cross-sectional view in some embodiments.

[0087] The probe assembly 31 may include a mounting base 311, a support 312 slidably connected to the mounting base 311, and a probe body 313 disposed on the support 312. The mounting base 311 is used to support the mounting support 312 and the probe body 313. The support 312 is slidably adjustable in distance from the battery 40 in the battery tray 10. The probe body 313 is used to contact the tabs 41 of the battery 40 in the battery tray 10 to achieve an electrical connection. The probe body 313 may move toward or away from the battery 40, for example, the tabs 41, when the support 312 slides relative to the battery tray 10.

[0088] In some embodiments, the mounting base 311 may be connected to the bracket 32, such as the positive electrode bracket 321 or the negative electrode bracket 322, by welding, screwing, snapping, bonding, or other connection methods known to those skilled in the art, which will not be elaborated further.

[0089] In some embodiments, the mounting base 311 can be fixed to the bracket 32, such as the positive electrode bracket 321 or the negative electrode bracket 322, corresponding to the positioning hole 3201.

[0090] In some embodiments, the mounting base 311 may be an insulating element. In some embodiments, the mounting base 311 may be a non-metallic insulating element. In some embodiments, the mounting base 311 may be a metallic element and may be insulated with other insulating materials at the location in contact with the probe body 313.

[0091] In some embodiments, the support 312 may be an insulating element. In some embodiments, the support 312 may be a non-metallic insulating element. In some embodiments, the support 312 may be a metallic element and may be insulated with other insulating materials at the location in contact with the probe body 313.

[0092] The support 312 has a pressing surface 3121 on the side opposite to the mounting base 311 along the sliding direction for mounting the probe body 313. The probe body 313's placement on the pressing surface 3121 allows for a separate design between the mounting base 311 and support 312 (which serve as pressing structures) and the current transmission structure, such as the probe body 313. In use, only the current transmission structure, such as the probe body 313, needs to be placed on the pressing surface 3121 of the pressing structures, such as the mounting base 311 and support 312, to achieve the function of the probe assembly 31. This ensures that the pressing structures, such as the mounting base 311 and support 312, are unaffected by the current. When the probe assembly 31 has a high current requirement, only the current limitation of the probe body 313 needs to be considered, without considering the current limitation of the pressing structures, such as the mounting base 311 and support 312. Furthermore, only the probe body 313 needs to be replaced based on the current requirement, without needing to replace the pressing structures, such as the mounting base 311 and support 312. In some embodiments, the probe body 313 can be connected to a wire 33.

[0093] In some embodiments, the probe assembly 31 may further include an elastic element, such as a third elastic element 314. The elastic element, such as the third elastic element 314, is disposed between the mounting base 311 and the support 312, and can elastically deform to drive the support 312 to move towards the side closer to the probe body 313. When the user uses the probe assembly 31, the probe assembly 31, such as the probe body 313, may contact the battery 40, such as the tab 41. The provision of the elastic element, such as the third elastic element 314, can press the probe body 313 onto the battery 40, such as the tab 41, enhancing good contact between the probe body 313 and the battery 40, such as the tab 41. Furthermore, the provision of the elastic element, such as the third elastic element 314, can buffer when the probe body 313 contacts the tab 41 of the battery 40, and can also reduce contact problems caused by errors.

[0094] The elastic element, such as the third elastic element 314, may be made of an elastic material and may have the ability to deform elastically. In some embodiments, the elastic element, such as the third elastic element 314, may be a spring, a coil spring, a torsion spring, or an elastic rod, etc., or may be other materials or structures well known to those skilled in the art, which will not be elaborated further.

[0095] In some embodiments, the probe body 313 may cover the entire extrusion surface 3121 to enhance the contact area between the probe body 313 and the battery 40, such as the tab 41.

[0096] In some embodiments, the probe body 313 may be provided with a ratchet surface 3001 on the side opposite to the extrusion surface 3121 to contact the tab 41 of the battery 40, thereby enhancing the good contact between the probe body 313 and the battery 40, such as the tab 41.

[0097] In some embodiments, the mounting base 311 may have a sliding hole 3102, and the support 312 may pass through the sliding hole 3102. Limiting portions, such as a first limiting portion 303 and a second limiting portion 304, may be provided on both sides of the support 312 along the sliding direction to limit the support 312 and effectively prevent the support 312 from detaching from the sliding hole 3102. In some embodiments, with the provision of an elastic element, such as a third elastic element 314, the mounting base 311 may abut against the limiting portions, such as the first limiting portion 303 and the second limiting portion 304, of the support 312. In some embodiments, the sliding hole 3102 may correspond to and communicate with the positioning hole 3201, so that the support 312 can be partially placed within the positioning hole 3201, or the support 312 can slide to be partially placed within the positioning hole 3201. In some embodiments, the positioning hole 3201 may extend in the sliding direction of the support 312. In some embodiments, the first limiting portion 303 may cooperate with the bracket 32 ​​for limiting.

[0098] The probe assembly 31 may also include a voltage needle 315. The voltage needle 315 may be disposed on the support 312 for contacting the tab 41 of the battery 40 to measure the voltage. In some embodiments, the voltage needle 315 may be connected to other circuitry without being connected to the wire 33.

[0099] In some embodiments, the probe body 313 may have a through hole 3101, and the voltage needle 315 may be partially exposed at the compression surface 3121 to pass through the through hole 3101 and extend to the side of the probe body 313 away from the support 312. Furthermore, when the probe body 313 contacts the tab 41 of the battery 40, the voltage needle 315 may also contact the tab 41 of the battery 40.

[0100] The support 312 may include a seat 3122 with a pressing surface 3121 and a limiting member 3123 movably connected to the seat 3122. A limiting portion, such as a second limiting portion 304, may be provided on one side of the seat 3122 along the sliding direction to limit the support 312, effectively preventing it from disengaging from the sliding hole 3102. A limiting portion, such as a first limiting portion 303, may be provided on the other side of the support 312 along the sliding direction to limit the support 312, preventing it from disengaging from the sliding hole 3102. The limiting member 3123 can adjust the displacement length of the relative sliding between the support 312 and the mounting base 311, thereby achieving good contact between the probe body 313 and the battery 40, such as the tab 41.

[0101] That is, the first limiting part 303 may be disposed on the side of the support 312 away from the extrusion surface 3121, and the second limiting part 304 may be disposed on the side of the support 312 facing the extrusion surface 3121. In some embodiments, the first limiting part 303 may be referred to as the second limiting part, and the second limiting part 304 may be referred to as the first limiting part. For example, the second limiting part may be disposed on the side of the support 312 away from the extrusion surface 3121, and the first limiting part may be disposed on the side of the support 312 facing the extrusion surface 3121.

[0102] In some embodiments, the limiting member 3123 may extend into the positioning hole 3201 and connect with the base 3122. In some embodiments, the limiting member 3123 may or may not be located within the positioning hole 3201. The positioning hole 3201 facilitates the assembly of the limiting member 3123 and the base 3122, and also allows the user to adjust the limiting member 3123 through the positioning hole 3201, thereby adjusting the displacement length of the relative sliding between the support 312 and the mounting base 311.

[0103] In some embodiments, an elastic element, such as a third elastic element 314, may be disposed between the seat 3122 and the mounting base 311.

[0104] In some embodiments, the limiting member 3123 can be connected to the seat 3122 by screwing, snapping or other detachable connection methods known to those skilled in the art, thereby enabling adjustment of the connection position between the limiting member 3123 and the seat 3122, and adjusting the displacement length of the relative sliding between the support 312 and the mounting base 311.

[0105] The voltage needle 315 can be movably connected to the support 312, such as the base 3122. In some embodiments, the voltage needle 315 can be slidably connected to the support 312, such as the base 3122. The probe assembly 31 may also include a buffer 3151. The buffer 3151 can be disposed between the support 312, such as the base 3122, and the voltage needle 315, and can elastically deform to drive the voltage needle 315 to move towards the side closer to the probe body 313. When the user uses the probe assembly 31, the voltage needle 315 can contact the battery 40, such as the tab 41. The buffer 3151 can press the voltage needle 315 onto the battery 40, such as the tab 41, enhancing the good contact between the voltage needle 315 and the battery 40, such as the tab 41. In addition, the buffer 3151 can buffer when the voltage needle 315 contacts the tab 41 of the battery 40, and can also reduce the problem of poor contact caused by errors.

[0106] The buffer 3151 may be made of an elastic material and may have elastic deformation capability. In some embodiments, the buffer 3151 may be a spring, coil spring, torsion spring or elastic rod, etc., or other materials or structures well known to those skilled in the art, which will not be elaborated further.

[0107] In some embodiments, an insulating member 3152 may be provided on the voltage needle 315. The insulating member 3152 may be provided on the through hole 3101 to achieve insulation between the voltage needle 315 and the probe body 313, such as the pressing part 3131. In some embodiments, the insulating member 3152 may be arranged around the side periphery of the voltage needle 315.

[0108] In some embodiments, one end of the buffer 3151 may abut against the support 312, such as the seat 3122, and the other end may abut against the insulating member 3152 to buffer the voltage needle 315.

[0109] In some embodiments, the voltage needle 315 may be directly and fixedly connected to the support 312, such as the base 3122. Alternatively, the voltage needle 315 may be connected to the limiting member 3123. In some embodiments, the voltage needle 315 may be part of the limiting member 3123. In some embodiments, the limiting member 3123 may be used as the voltage needle 315, thus simplifying the structure; of course, the voltage needle 315 may also be only part of the limiting member 3123.

[0110] In some embodiments, a limiting portion, such as a first limiting portion 303, may be provided on the voltage needle 315. In some embodiments, the voltage needle 315 may be provided on the limiting member 3123, or in a further embodiment, it may simply pass through the mounting hole 3103.

[0111] The support 312, such as the base 3122, has a mounting hole 3103. A voltage needle 315 can pass through the mounting hole 3103 and may be partially located on the side of the mounting base 311 opposite to the extrusion surface 3121. In some embodiments, the mounting hole 3103 may correspond to the positioning hole 3201, and in some embodiments, the voltage needle 315 may sequentially pass through the positioning hole 3201 and the mounting hole 3103 to connect with the base 3122 or the limiting member 3123. In some embodiments, the voltage needle 315 may be screwed to the wall of the mounting hole 3103. In some embodiments, the mounting hole 3103 may extend in the sliding direction of the support 312 and may extend to the side of the mounting base 311 opposite to the extrusion surface 3121.

[0112] The probe assembly 31 may also include a temperature sensor 316, which can abut against the probe body 313 to measure the temperature of the battery 40. Thus, the probe assembly 31 of this application integrates current, voltage, and temperature testing, providing multiple testing functions and offering convenience and speed.

[0113] In some embodiments, a mounting groove 3002 may be provided on the extrusion surface 3121, and a temperature sensor 316 may be disposed in the mounting groove 3002.

[0114] In some embodiments, the temperature sensor 316 may be connected to other circuitry instead of to the wire 33.

[0115] The probe body 313 may include a pressing part 3131 disposed on the pressing surface 3121 and a wiring part 3132 connected to the pressing part 3131. The pressing part 3131 serves as the main structure for the probe body 313 to engage with the tab 41 of the battery 40, and contacts the tab 41 of the battery 40 in the battery tray 10, and may be provided with a structure that engages with the tab 41 of the battery 40.

[0116] In some embodiments, the wiring portion 3132 may be bent toward the side closer to the support 312 so as to be connected to the wire 33.

[0117] In some embodiments, a relief groove 3111 is provided on the side of the mounting base 311 near the wiring portion 3132, and the wiring portion 3132 may be disposed in the relief groove 3111 and insulated from the mounting base 311.

[0118] In some embodiments, the probe body 313, such as the wiring portion 3132, can be connected to the support 312, such as the base 3122, by means of screwing, snap-fitting, or other detachable connection methods known to those skilled in the art, so that the probe body 313 can be replaced when needed.

[0119] In some embodiments, when the wiring portion 3132 is detachably connected to the support 312, such as the base 3122, the pressing portion 3131 may be disposed on the pressing surface 3121.

[0120] The support 312, such as the base 3122, may be provided with a mounting hole 3003 for mounting the voltage needle 315. In some embodiments, the probe assembly 31 may further include a buffer 3151, which may be disposed between the support 312, such as the base 3122, and the voltage needle 315, and is capable of elastically deforming to drive the voltage needle 315 to move towards the side closer to the probe body 313. When the user uses the probe assembly 31, the voltage needle 315 may contact the battery 40, such as the tab 41. The buffer 3151 can press the voltage needle 315 onto the battery 40, such as the tab 41, enhancing the good contact between the voltage needle 315 and the battery 40, such as the tab 41. In addition, the buffer 3151 can buffer the contact between the voltage needle 315 and the tab 41 of the battery 40, and can also reduce the problem of poor contact caused by errors.

[0121] The buffer 3151 may be made of an elastic material and may have elastic deformation capability. In some embodiments, the buffer 3151 may be a spring, coil spring, torsion spring or elastic rod, etc., or other materials or structures well known to those skilled in the art, which will not be elaborated further.

[0122] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A negative pressure cup assembly, characterized in that, The negative pressure cup assembly, used in a battery tray, includes: Mounting rack; A manifold, mounted on the mounting bracket, the manifold having an air inlet; and A negative pressure cup is used to connect the manifold to the battery's liquid inlet. The negative pressure cup includes a cup body mounted on the manifold and a compression nozzle connected to the cup body. The cup body has an air outlet, which is connected to the air inlet when the cup body is installed on the manifold. The compression nozzle is connected to the cup body and is used to press against the liquid inlet of the battery, and can squeeze between the cup body and the battery; The mounting bracket can be detachably attached to the battery tray.

2. The negative pressure cup assembly according to claim 1, characterized in that, The negative pressure cup assembly also includes: A locking mechanism is provided for fixing the battery tray and is detachably connected to the mounting bracket.

3. The negative pressure cup assembly according to claim 2, characterized in that, The locking mechanism has a sliding guide that can slide to a position to lock or unlock the mounting bracket.

4. The negative pressure cup assembly according to claim 3, characterized in that, The locking mechanism further includes: A support base for fixing to the battery tray and for supporting the mounting bracket, the guide member being slidably connected to the support base; and The first elastic element abuts against the guide element and is used to drive the guide element to slide to the position where the mounting bracket is locked.

5. The negative pressure cup assembly according to claim 4, characterized in that, The support base is configured to support the mounting bracket in a first direction and abut against the mounting bracket in a second direction, wherein the first direction is perpendicular to the second direction; the guide member is configured to slide along a third direction, and can partially slide to a side of the mounting bracket opposite to the support base along the first direction to lock the mounting bracket, and can slide to a position to unlock the mounting bracket.

6. The negative pressure cup assembly according to claim 5, characterized in that, The first direction is the vertical direction, and the third direction is the horizontal direction.

7. The negative pressure cup assembly according to claim 4, characterized in that, The guide has a holding portion in a direction perpendicular to the sliding direction. The first elastic member is sleeved on the guide, with one end abutting against the support seat and the other end abutting against the holding portion.

8. The negative pressure cup assembly according to claim 1, characterized in that, The compression nozzle has a plurality of grooves arranged side by side along the axial direction of the compression nozzle, and each of the plurality of grooves is arranged around the outer peripheral surface of the compression nozzle.

9. The negative pressure cup assembly according to claim 8, characterized in that, The compression nozzle includes a connector section and a sealing section connected along its axial direction. The connector section is connected to the cup body, and the sealing section is connected to the liquid injection port. The plurality of grooves are provided in the connector section.

10. The negative pressure cup assembly according to claim 9, characterized in that, The cup body has a connector hole, the connector segment is placed in the connector hole, and multiple ribs are protruding on the inner wall of the connector hole and arranged circumferentially along the connector hole. The connector segment is interference-fitted with the multiple ribs.

11. The negative pressure cup assembly according to any one of claims 1-10, characterized in that, The negative pressure cup assembly also includes: A pressure regulating assembly is provided, wherein the manifold is mounted on the mounting bracket via the pressure regulating assembly. The pressure regulating assembly is used to adjust the distance between the manifold and the battery, and can apply a force to the manifold to move it closer to the battery. It also adjusts the seal between the compression nozzle and the battery at the battery's filling port.

12. The negative pressure cup assembly according to claim 11, characterized in that, A connecting block is connected to the bottom of the manifold, and the pressure regulating assembly includes: A guide seat, disposed on the mounting bracket, wherein the busbar is slidably connected to the guide seat to slide toward or away from the battery; and The second elastic element abuts against the connecting block and is used to apply a force that causes the connecting block to slide the busbar towards the side closer to the battery.

13. The negative pressure cup assembly according to any one of claims 1-10, characterized in that, The mounting bracket includes: Two support rods are detachably connected to both sides of the battery tray; and A connecting rod, connecting the two support rods, can be positioned above the battery; The busbar connects the two support rods and is located on one or both sides of the connecting rod, and can be placed above the battery.

14. The negative pressure cup assembly according to claim 13, characterized in that, The connecting rod is provided with a negative pressure gas collection port, which is connected to the inside of the manifold.

15. The negative pressure cup assembly according to claim 14, characterized in that, The negative pressure cup assembly also includes a pilot valve, which is disposed on the connecting rod. The connecting rod has a positive pressure gas collection port, which is connected to the positive pressure interface of the pilot valve. The negative pressure gas collection port is connected to the negative pressure interface of the pilot valve. The connection port of the pilot valve is in communication with the inside of the manifold. The pilot valve is configured to control the negative pressure gas collection port to communicate with the inside of the manifold through the pilot valve with a first air pressure at the positive pressure gas collection port, and to control the negative pressure gas collection port to disconnect from the inside of the manifold through the pilot valve with a second air pressure at the positive pressure gas collection port.

16. The negative pressure cup assembly according to any one of claims 1-10, characterized in that, The manifold has a mounting part, the cup body has an assembly part, the air inlet is disposed on the mounting part, and the air outlet is disposed on the assembly part; When the cup body is installed on the manifold, the mounting part is connected to the assembly part, and the air inlet is connected to the air outlet.

17. A battery testing device, characterized in that, include: Battery tray, used to hold batteries; The negative pressure cup assembly according to any one of claims 1-16 is detachably connected to the battery tray.

18. The battery testing device according to claim 17, characterized in that, The battery testing device also includes: A battery testing mechanism, detachably mounted on the mounting bracket, is used to connect the batteries in the battery tray in series.

19. The battery testing device according to claim 18, characterized in that, The battery testing mechanism includes: Multiple probe assemblies, including multiple positive electrode probe assemblies and multiple negative electrode probe assemblies; A positive electrode support, and multiple positive electrode probe assemblies are disposed on the positive electrode support and arranged side by side with the busbar on the mounting frame; A negative electrode bracket is provided, and multiple negative electrode probe assemblies are disposed on the negative electrode bracket. The positive electrode bracket is disposed side by side with the negative electrode bracket so that one positive electrode probe assembly and one negative electrode probe assembly are disposed in a one-to-one correspondence and can contact the positive electrode tab and negative electrode tab of the same battery in the battery tray. The negative electrode bracket is disposed side by side with the busbar on the mounting bracket and is located on both sides of the busbar with the positive electrode bracket. Multiple wires are used to electrically connect the staggered positive probe assembly and the negative probe assembly, allowing the positive probe assembly to extend from above the busbar to connect with the negative probe assembly. When the battery testing mechanism is applied to the battery tray, in two adjacent batteries, the positive electrode probe assembly corresponding to one battery is connected to the negative electrode probe assembly corresponding to the other battery via the wire, so that the multiple probe assemblies and the multi-strand wire connect the batteries in the battery tray in series.

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