Exhaust device suitable for battery formation

Abstract

The utility model relates to an exhaust device, in particular to an exhaust device suitable for battery formation. According to the technical scheme provided by the utility model, the exhaust device suitable for the battery formation comprises a battery storage unit, a battery formation unit, a battery formation unit, a battery formation unit, a battery formation unit, a battery formation unit, a battery formation unit and a battery formation unit, and is characterized in that the battery formation unit is used for storing a to-be-formed battery pack; the bubble guiding device is connected with the battery containing unit in a matched mode and used for providing corresponding gradual change pressure for the spatial position of each battery in the battery pack at the same time so that bubbles in the batteries can be guided to move in the exhaust direction through the provided gradual change pressure, and when any battery in the battery containing unit is guided to exhaust, the bubbles in the batteries can be guided to move in the exhaust direction. And the gradient pressure provided by the bubble guide device is in a gradually reduced state based on the exhaust moving direction of the bubbles. According to the utility model, bubbles generated in the battery formation process can be effectively guided and discharged, and the exhaust efficiency is improved.

Description

Technical Field

[0001] This utility model relates to an exhaust device, and more particularly to an exhaust device suitable for battery formation. Background Technology

[0002] In the manufacturing process of metal-ion batteries such as lithium-ion batteries and sodium-ion batteries, the formation process is one of the most critical steps. Formation mainly involves activating the chemical reactions inside the battery during the first charge to form a stable solid-electrolyte interface film (SEI film). The SEI film is formed naturally during the formation process. When the battery is first charged, the surface of the negative electrode material (such as graphite particles) reacts with the electrolyte to form a thin protective layer, namely the SEI film. The main function of the SEI film is to allow ions to pass through while blocking electrons, which plays an important role in improving the safety and cycle stability of the battery.

[0003] Meanwhile, during the formation process of metal-ion batteries such as lithium-ion and sodium-ion batteries, electrolyte decomposition or reaction with positive / negative electrode materials occurs during the first charge, generating gases such as CO, CO2, CH4, C2H2, H2, and C4H6. These bubbles not only hinder the formation of a uniform SEI film, leading to decreased electrochemical performance, reduced cycle stability, and increased safety risks, but also affect product yield. This is because bubble generation not only consumes electrolyte or encroaches on the internal pores of the electrodes, resulting in insufficient battery wetting, but also impedes effective ion migration, causing insufficient metal ion insertion / extraction in the active materials, leading to reduced battery efficiency and performance, such as decreased capacity. Furthermore, the gases may also increase internal pressure, affecting battery safety. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an exhaust device suitable for battery formation, which can effectively remove the bubbles generated during the battery formation process, thereby reducing the complexity of operation and the cost of exhaust.

[0005] According to the technical solution provided by this utility model, an exhaust device suitable for battery formation is provided, the exhaust device comprising:

[0006] A battery storage unit for storing a battery pack to be formed, wherein the battery pack includes at least one battery;

[0007] A bubble guiding device, adapted and connected to the battery storage unit, is used to simultaneously provide a corresponding gradual pressure to each battery in the battery pack. This gradual pressure guides the bubbles within the batteries to move in the exhaust direction.

[0008] When guiding the venting of any battery in the battery storage unit, based on the venting direction of the bubbles, the gradual pressure provided by the bubble guiding device is applied to the spatial location of each battery, and the provided gradual pressure gradually decreases.

[0009] In one embodiment, the battery storage unit includes at least a battery storage shell, and the battery pack can be stably stored inside the battery storage shell;

[0010] The bubble guiding device includes a battery cell pusher adapted to the battery pack and a pusher motion drive mechanism for driving the battery cell pusher to move relative to the battery pack, wherein...

[0011] The battery unit pusher includes several battery slots that allow batteries to be embedded, and the batteries in the battery pack correspond one-to-one with the battery slots of the battery unit pusher;

[0012] When the pusher body is driven by the pusher body motion mechanism, the battery is embedded in the corresponding battery slot, and the bottom of the battery slot gradually approaches the battery embedded in the battery slot, so as to apply the required gradual pressure to the battery embedded in the battery slot.

[0013] For any battery slot, the width of the battery slot gradually decreases along the direction from the slot opening to the bottom of the slot, wherein...

[0014] The battery contacts the side wall of the corresponding battery slot to apply a corresponding gradual pressure to the battery embedded in the battery slot based on the slot width.

[0015] The battery pack and battery storage case are detachably connected.

[0016] A drive mechanism support frame is provided on the battery storage shell, and the push body motion drive mechanism is assembled on the drive mechanism support frame.

[0017] The pusher motion drive mechanism includes a pusher cylinder mounted on a drive mechanism support frame, and the piston rod of the pusher cylinder is connected to the battery unit pusher.

[0018] In another embodiment, the battery storage unit includes a storage support frame, the storage support frame including a support base plate and a storage top plate corresponding to the support base plate, wherein...

[0019] A battery clamping plate assembly is provided inside the storage support frame. The battery clamping plate assembly includes several battery clamping plates. Any two adjacent batteries are separated by a battery clamping plate, and the batteries adjacent to the support base plate are separated from the support base plate by a battery clamping plate. At the same time, the batteries adjacent to the storage top plate are separated from the storage top plate by a battery clamping plate.

[0020] All battery clamps are fitted onto the clamp guide shaft, and the two ends of the clamp guide shaft are fixedly connected to the support base plate and the storage top plate, respectively, and the battery clamps can move along the clamp guide shaft.

[0021] The bubble guiding device includes a gradual pressure providing unit and a clamping force providing unit for pressing the batteries together, wherein...

[0022] The gradual pressure supply unit includes several Young's modulus elastic groups, wherein each Young's modulus elastic group corresponds one-to-one with a battery.

[0023] The Young's modulus elastic group includes two Young's modulus elastomers, which are distributed on both sides of the battery. Each Young's modulus elastomer is located between the corresponding battery and the corresponding battery clamp, and the Young's modulus elastomer is in contact with the corresponding outer wall of the battery.

[0024] When the batteries are pressed together by the clamping force supply unit, the contact between the Young's modulus elastic group and the battery is used to provide gradual pressure to the battery.

[0025] The Young's modulus elastomer comprises at least two first elastic blocks with different Young's moduli, wherein...

[0026] For any Young's modulus elastic body, the first elastic blocks with different Young's moduli are arranged according to the direction of the gradual change in Young's modulus.

[0027] The Young's modulus elastomer includes at least two second elastic blocks of different thicknesses with different Young's moduli, wherein...

[0028] For any Young's modulus elastic body, the second elastic blocks of Young's modulus with different thicknesses are arranged in the direction of gradual thickness change.

[0029] The clamping force providing unit includes a clamping cylinder, wherein...

[0030] The piston rod of the clamping cylinder is connected to the battery pressure plate, which is located between the battery pack and the storage top plate, and the battery pressure plate is in contact with the battery clamp plate adjacent to the storage top plate.

[0031] During the venting process, the clamping cylinder presses the battery towards the support base plate via the battery clamping plate.

[0032] The advantages of this invention are: the battery pack is stored in the battery storage unit, and the bubble guiding device works in conjunction with the battery storage unit to simultaneously provide corresponding gradual pressure to the spatial position of each battery in the battery pack. The provided gradual pressure guides the bubbles in the battery to move in the exhaust direction, thereby effectively guiding the bubbles generated during the battery formation process to be discharged and improving the exhaust efficiency. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of one embodiment of the present invention when venting the battery.

[0034] Figure 2 To remove Figure 1 A schematic diagram of one embodiment of a battery storage case.

[0035] Figure 3 for Figure 1 A schematic diagram of one embodiment of the bubble guiding device in conjunction with the battery pack.

[0036] Figure 4 for Figure 1 A schematic diagram of one embodiment of the bubble guiding device.

[0037] Figure 5 This is a perspective view of a second embodiment of the present invention when venting the battery.

[0038] Figure 6 This is a schematic diagram of the second embodiment of the present invention when venting the battery.

[0039] Figure 7 This is a schematic diagram of an embodiment of the Young's modulus elastomer of this utility model in conjunction with a battery and a battery clamp.

[0040] Figure 8 This is a schematic diagram of another embodiment of the Young's modulus elastomer of this utility model in conjunction with a battery and a battery clamp.

[0041] Explanation of reference numerals in the attached drawings: 1-square battery, 2-first frame of the storage shell, 3-frame connecting bolt, 4-second frame of the storage shell, 5-support frame connector, 6-battery unit pusher, 7-support frame support plate, 8-pusher cylinder, 9-support connecting rod, 10-battery slot, 11-pusher connector, 12-support base plate, 13-support frame support rod, 14-clamping spacer sleeve, 15-battery clamping plate, 16-linear bearing, 17-top storage plate, 18-pressing cylinder, 19-battery pressure plate, 20-flat battery, 21-Young's modulus elastomer, 22-first Young's modulus elastic block, 23-second Young's modulus elastic block. Detailed Implementation

[0042] The present invention will be further described below with reference to the specific accompanying drawings and embodiments.

[0043] In order to effectively remove the air bubbles generated during battery formation and improve the venting efficiency, this utility model provides a venting device suitable for battery formation. Specifically, the venting device includes:

[0044] A battery storage unit for storing a battery pack to be formed, wherein the battery pack includes at least one battery;

[0045] A bubble guiding device, adapted and connected to the battery storage unit, is used to simultaneously provide a corresponding gradual pressure to each battery in the battery pack. This gradual pressure guides the bubbles within the batteries to move in the exhaust direction.

[0046] When guiding the venting of any battery in the battery storage unit, based on the venting direction of the bubbles, the gradual pressure provided by the bubble guiding device is applied to the spatial location of each battery, and the provided gradual pressure gradually decreases.

[0047] Unlike existing technologies that use uniform pressure (uniform pressure across the battery surface) for venting, this invention applies varying pressure to the spatial location of the battery to guide the release of bubbles generated during formation. The spatial location of the battery includes at least its outer surface. The application of varying pressure to the outer surface is explained in the following description. To improve battery formation efficiency, a battery storage unit can be used to house the battery pack. The battery pack typically includes one or more batteries. When multiple batteries are housed simultaneously in the storage unit, venting can be performed on all batteries at the same time. It should be noted that during venting, at least the generated bubbles must be expelled from inside the battery. As explained above, expelling the bubbles from inside the battery reduces their impact on the battery, improving battery performance and safety.

[0048] In one embodiment of this utility model, the venting device includes at least a battery storage unit and a bubble guiding device. That is, the battery storage unit and the bubble guiding device can be used to guide the venting of the battery, ultimately allowing gas to escape from the battery. As described above, the battery storage unit can store the battery pack. In specific implementation, the bubble guiding device simultaneously provides the required gradual pressure for venting to each battery space within the battery pack. That is, during venting, the bubble guiding device can simultaneously apply a gradual pressure to each battery in the battery pack. Subsequently, for each battery, under the applied gradual pressure, the bubbles within the battery can be guided to move in the venting direction, allowing the bubbles to detach and escape from the battery.

[0049] It should be noted that the gradual pressure provided by the bubble guiding device should specifically cause a certain deformation in the battery, guiding the bubbles within the battery towards the venting direction. Of course, the deformation of the battery under the gradual pressure should be minimal and should not affect the battery's subsequent normal use. During the formation of a specific type of battery, the venting direction can be determined based on the battery's structure. For example, the orientation between the bubbles within the battery and the venting holes can be determined based on the location of the venting holes on the battery, thus determining the venting direction.

[0050] After determining the exhaust direction, the bubble guiding device can provide a gradually decreasing pressure based on the direction of bubble exhaust movement, thereby using the gradually decreasing pressure to guide the bubbles to be discharged from the battery quickly and effectively.

[0051] It should be noted that the applied gradual pressure should be maintained until the battery formation process is complete. That is, before the battery formation process is finished, a gradual pressure should be maintained on the battery surface to guide the bubbles generated during the formation process along a predetermined direction until the bubbles are driven out of the battery. Therefore, the gradual pressure in this invention refers to different pressures at different locations on the battery surface, and this gradual change is not the application of different pressures at the same location on the battery surface. When a gradual pressure is applied to the spatial location of the battery, a predetermined path can be formed to guide the movement of the bubbles.

[0052] When a venting unit is typically installed on a battery, the venting unit can be a vent hole on the battery or a vent bag that is adapted to and connected to the battery. The type of venting unit can be selected as needed, ensuring that gas can be effectively discharged from the battery without affecting normal operation. In order to effectively guide the movement of bubbles along a predetermined path, in one embodiment of this invention, the gradual pressure applied to the battery surface gradually decreases in the direction of bubble movement along the predetermined path, thereby forming a gradually decreasing pressure state.

[0053] When a gradual pressure is applied to the surface of the battery, the surface of the battery is subjected to a gradual pressure. This gradual pressure on the surface of the battery will also cause changes inside the battery, that is, a gradual pressure will be formed inside the battery. This gradual pressure inside the battery will create a pressure gradient state in the internal space of the battery. Based on the formed gradient state, the forces on the bubbles will always be in an unbalanced state. Furthermore, according to the gradual change of the pressure, the bubbles can be guided to move towards the location of the exhaust unit, thereby guiding the movement of the bubbles and accelerating the expulsion of the bubbles from the battery.

[0054] It is understood that after applying gradual pressure to the surface of the battery, a gradual pressure will be formed on the surface of the battery. As can be seen from the above description, a pressure difference can be formed inside the battery through gradual pressure / gradual pressure. Under the action of the formed pressure difference, the movement of bubbles can be effectively guided. Therefore, compared with the existing uniform pressure venting method, this utility model can make the bubbles vent better and make the bubbles move and vent in a predetermined direction.

[0055] In one embodiment of this utility model, the battery storage unit includes at least a battery storage shell, and the battery pack can be stored in the battery storage shell;

[0056] The bubble guiding device includes a battery cell pusher 6 adapted to the battery pack and a pusher motion drive mechanism for driving the battery cell pusher 6 to move relative to the battery pack.

[0057] The battery unit pusher 6 includes a plurality of battery slots 10 that allow batteries to be embedded, and the batteries in the battery pack correspond one-to-one with the battery slots 10 of the battery unit pusher 6.

[0058] When the pusher body 6 is driven by the pusher body motion drive mechanism, the battery is embedded in the corresponding battery slot 10, and the bottom of the battery slot 10 gradually approaches the battery embedded in the battery slot 10, so as to apply gradual pressure to the battery embedded in the battery slot 10.

[0059] It should be noted that the pusher mechanism drives the battery unit pusher 6 to apply gradual pressure to the battery embedded in the battery slot 10. This gradual pressure application method is more suitable for the prismatic battery 1 because its casing is made of a harder metal (steel or aluminum). Since the casing of the pouch battery is an aluminum-plastic composite film, applying gradual pressure to the pouch battery embedded in the battery slot 10 using the pusher mechanism would damage its surface structure. Therefore, the current gradual pressure application method is not suitable for pouch batteries. It is understood that, based on the current gradual pressure application method, the batteries in the battery pack should preferably be prismatic batteries 1, and the metal type used for the casing of the prismatic battery 1 should ensure that it will not be damaged after applying gradual pressure. The following example uses a prismatic battery 1, combined with... Figures 1-4 The method of applying gradual pressure is explained in detail.

[0060] Figures 1-4 The figure shows an embodiment of the bubble guiding device of this utility model. As can be seen from the figure, the bubble guiding device includes a battery unit pusher 6 and a pusher motion drive mechanism. The battery unit pusher 6 includes a plurality of battery slots 10. Generally, there is a one-to-one correspondence between the battery slots 10 and the square batteries 1, that is, one battery slot 10 can only allow one square battery 1 to be inserted. Figures 1-4 The image shows an embodiment in which the battery unit pusher 6 includes four battery slots 10. In this case, the battery unit pusher 6 can cooperate with four square batteries 1 at the same time, that is, it can simultaneously apply gradual stress to the four square batteries 1 so as to guide the air bubbles in the four square batteries 1 to be discharged at the same time.

[0061] In one embodiment of this utility model, for any battery slot 10, the width of the battery slot 10 gradually decreases along the direction from the opening to the bottom of the slot. The battery contacts the side wall of the corresponding embedded battery slot 10, so as to provide a corresponding gradual pressure to the battery embedded in the battery slot 10 by utilizing the width of the slot 10. At this time, the opening of the battery slot 10 corresponds to the venting unit on the battery, and the bottom of the battery slot 10 is relatively far away from the venting unit of the battery, so as to meet the requirement of applying gradual pressure as described above.

[0062] Depend on Figures 1-4 It can be seen that the battery slots 10 are arranged in parallel within the battery unit pusher 6. In order to apply gradual stress to the embedded battery, the width of the battery slot 10 can be set to gradually decrease along the direction from the opening of the battery slot 10 to the bottom of the battery slot 10.

[0063] It should be noted that, since the battery slots 10 within the battery unit pusher 6 are arranged in parallel, the square batteries 1 should be arranged in a parallel manner to simultaneously apply gradual pressure to all spatial positions of the square batteries 1. Of course, the parallel-arranged square batteries 1 should remain independent of each other. Specifically, in this embodiment, the square batteries 1 within the battery pack can be stored using a battery storage shell. Therefore, the parallel-arranged square batteries 1 should be fixed and stored using the battery storage shell. During formation venting, all square batteries 1 within the battery pack should be fixed within the battery storage shell to facilitate the simultaneous application of gradual pressure to the spatial position of each square battery 1 using the bubble guiding device.

[0064] In specific implementation, the pushing body motion drive mechanism drives the battery unit pushing body 6 to move in the direction of the bottom of the battery slot 10 towards the opening of the battery slot 10. In the initial state, the square battery 1 corresponds to the opening of the battery slot 10. As the pushing body motion drive mechanism pushes, the battery unit pushing body 6 can gradually approach the battery. Subsequently, the square battery 1 will gradually enter the corresponding battery slot 10 and gradually approach the bottom of the battery slot 10. Since the width of the battery slot 10 gradually decreases, the clamping degree of the battery by the side wall of the battery slot 10 gradually increases, thereby applying a gradual pressure to the square battery 1.

[0065] For the battery, when a gradual pressure is applied to the spatial position of the square battery 1 in the above manner, the direction of the air bubble venting and movement inside the battery should be along the bottom of the battery slot 10 and towards the opening of the battery slot 10.

[0066] In one embodiment of this utility model, the battery pack and the battery storage shell are detachably connected.

[0067] A drive mechanism support frame is provided on the battery storage shell, and the push body motion drive mechanism is assembled on the drive mechanism support frame.

[0068] The pusher motion drive mechanism includes a pusher cylinder mounted on a drive mechanism support frame, and the piston rod of the pusher cylinder is connected to the battery unit pusher.

[0069] To facilitate quick storage of different battery packs, the battery packs and battery storage cases are detachably connected. Figure 1 The figure shows an embodiment of a battery storage case. The battery storage case may include a first frame 2 and a second frame 4 adapted to the first frame 2. The first frame 2 can be placed on the second frame 4. Thereafter, the first frame 2 and the second frame 4 can be locked together by frame connecting bolts 3. As can be seen from the above description, when the first frame 2 and the second frame 4 are used to form a battery storage case, the battery storage case is adapted to the parallel-arranged batteries and can fix the batteries for storage.

[0070] Understandably, when the battery is securely stored in the battery housing, the movement of the battery unit pusher 6 allows the battery to be aligned and embedded in the corresponding battery slot 10 without affecting the gradual pressure applied to the square battery 1 by the battery slot 10. When the mutual locking between the first frame 2 and the second frame 4 of the housing is released via the frame connecting bolts 3, the battery pack can be easily placed inside or removed from the battery housing. Of course, other forms of battery housing can also be used, which can be selected according to needs, and will not be listed here.

[0071] Figure 1 In this embodiment, a drive mechanism support frame is provided on the battery storage shell, and a push body motion drive mechanism is assembled on the drive mechanism support frame. The drive mechanism support frame includes a support frame connector 5 disposed on the second frame body 4 of the storage shell. The support frame connector 5 and the first frame body 2 of the storage shell are respectively located on opposite sides of the second frame body 4 of the storage shell. In addition, the drive mechanism support body 5 also includes a support frame support plate 7 and support rods 9. The drive mechanism support body 5 and the support frame support plate 7 are parallel to each other. Four support rods 9 are provided between the drive mechanism support body 5 and the support frame support plate 7, that is, the drive mechanism support body 5 and the support frame support plate 7 can be connected by the four support rods 9.

[0072] The pusher motion drive mechanism includes a pusher cylinder 8 mounted on a drive mechanism support frame, which is composed of... Figure 1 and Figure 2It is understood that the pusher cylinder 8 is mounted on the support plate 7 of the support frame. Furthermore, the piston rod of the pusher cylinder 8 is connected to the battery unit pusher 6 via a pusher connector 11. The pusher connector 11 can adopt a commonly used form, specifically designed to effectively connect the piston rod of the pusher cylinder 8 to the battery unit pusher 6. It is understood that after the piston rod of the pusher cylinder 8 is connected to the battery unit pusher 6 via the pusher connector 11, the extension and retraction of the piston rod of the pusher cylinder 8 can drive the movement of the battery unit pusher 6. The details of driving the movement of the battery unit pusher 6 can be found in the corresponding descriptions above.

[0073] In another embodiment of this utility model, the battery storage unit includes a storage support frame, the storage support frame including a support base plate 12 and a storage top plate 17 corresponding to the support base plate 12, wherein...

[0074] A battery clamping plate assembly is provided inside the storage support frame. The battery clamping plate assembly includes several battery clamping plates 15. Any two adjacent batteries are separated by a battery clamping plate 15, and the batteries adjacent to the support base plate 12 are separated from the support base plate 12 by a battery clamping plate 15. At the same time, the batteries adjacent to the storage top plate 17 are separated from the storage top plate 17 by a battery clamping plate 15.

[0075] All battery clamps 15 are sleeved on clamp guide shafts, and the two ends of the clamp guide shafts are fixedly connected to the support base plate 12 and the storage top plate 17, respectively, and the battery clamps 15 can move along the clamp guide shafts.

[0076] Specifically, the battery storage unit includes a supporting base plate 12 and a storage top plate 17, wherein the storage top plate 17 and the supporting base plate 12 are parallel to each other, and the supporting base plate 12 and the storage top plate 17 are connected by two support rods 13. In specific implementation, the two support rods 13 are located on one side of the supporting base plate 12 and the storage top plate 17, such as... Figure 5 and Figure 6 As shown.

[0077] The battery storage unit allows for the side-by-side arrangement of flat batteries 20 within the battery pack. That is, when the battery storage unit uses a storage support frame, the batteries should preferably be flat batteries 20, which can be pouch batteries or prismatic batteries 1. The following example uses flat batteries 20, combined with... Figures 5-8 The method of applying gradual pressure is explained in detail.

[0078] In practice, the parallel-arranged flat batteries 20 are supported on the support base plate 12. In order to provide gradual pressure to all the flat batteries 20 at the same time, a battery clamping plate group should be set in the storage support frame. The battery clamping plate group includes several battery clamping plates 15. The battery clamping plates 15 should generally be made of cardboard. The multiple battery clamping plates 15 are located between the support base plate 12 and the storage top plate 17.

[0079] Figure 5 and Figure 6 The diagram illustrates an embodiment where flat battery packs 20 are arranged side-by-side. As shown, any two adjacent flat battery packs 20 are separated by a battery clamp 15. Furthermore, a battery clamp 15 separates the supporting base plate 12 from the flat battery packs 20 arranged adjacent to it. Similarly, a battery clamp 15 separates the housing top plate 17 from the flat battery packs 20 arranged adjacent to it. This results in a battery clamp 15 on both sides of each flat battery pack 20. In practice, the multiple battery clamps 15 are parallel to each other and are fitted onto a clamp guide shaft. Figure 5 and Figure 6 The illustration shows an embodiment in which four clamping guide shafts are provided between the supporting base plate 12 and the storage top plate 17, with both ends of the clamping guide shafts being fixedly connected to the supporting base plate 12 and the storage top plate 17, respectively.

[0080] Figure 5 and Figure 6 In this configuration, a clamping plate spacer sleeve 14 is provided between any two adjacent battery clamping plates 15. The clamping plate spacer sleeve 14 is fitted onto the clamping plate guide post. The clamping plate spacer sleeve 14 can be used to separate two adjacent battery clamping plates 15. Both the clamping plate spacer sleeve 14 and the battery clamping plates 15 can move along the length direction of the clamping plate guide shaft. It should be noted that the clamping plate guide shaft is not marked, but the corresponding clamping plate guide shaft can be determined according to the position of the clamping plate spacer sleeve 14.

[0081] In one embodiment of this utility model, the bubble guiding device includes a gradual pressure providing unit and a clamping force providing unit for pressing the batteries together, wherein...

[0082] The gradual pressure supply unit includes several Young's modulus elastic groups, wherein each Young's modulus elastic group corresponds one-to-one with a battery.

[0083] The Young's modulus elastic group includes two Young's modulus elastomers 21, which are distributed on both sides of the battery. Each Young's modulus elastomer 21 is located between the corresponding battery and the corresponding battery clamp 15, and the Young's modulus elastomer 21 is in contact with the corresponding outer wall of the battery.

[0084] When the batteries are pressed together by the clamping force supply unit, the contact between the Young's modulus elastic group and the battery is used to provide gradual pressure to the battery.

[0085] Specifically, the bubble guiding device includes a gradual pressure providing unit and a clamping force providing unit. The gradual pressure providing unit includes several Young's modulus elastic groups, which correspond one-to-one with the batteries. Therefore, once the number of batteries in the battery pack is determined, the number of corresponding Young's modulus elastic groups in the gradual pressure providing unit can be determined. As can be seen from the above description, the battery here should be a flat battery 20.

[0086] In specific implementation, the Young's modulus elastic group may include at least two Young's modulus elastomers 21, wherein the two Young's modulus elastomers 21 are respectively located on both sides of the corresponding flat battery 20. Furthermore, the Young's modulus elastomers 21 are located between the corresponding flat battery 20 and the corresponding battery clamp 15, and the Young's modulus elastomers 21 are in contact with the corresponding outer wall of the flat battery 20. When the flat battery 20 is pressed by the clamping force providing unit, the contact between the Young's modulus elastic group and the flat battery 20 provides a gradual pressure to the flat battery 20. It should be noted that providing the gradual pressure required for venting the flat battery 20 through the Young's modulus elastic group can further improve the battery venting effect and venting efficiency.

[0087] In one embodiment of this utility model, the clamping force providing unit includes a clamping cylinder 18, wherein...

[0088] The piston rod of the clamping cylinder 18 is connected to the battery clamping plate 19, which is located between the battery pack and the storage top plate 17, and the battery clamping plate is in contact with the battery clamping plate 15 adjacent to the storage top plate.

[0089] During the exhaust process, the pressing cylinder 18 presses the battery toward the support base plate 12 via the battery pressing plate 19.

[0090] Figure 5 and Figure 6 In this configuration, a clamping cylinder 18 is mounted on the storage top plate 17. The piston rod of the clamping cylinder 18 is connected to the battery pressure plate 19, and the extension and retraction of the piston rod of the clamping cylinder 18 can drive the battery pressure plate 19 to move. Specifically, the battery pressure plate 19 is in contact with and fixedly connected to a battery clamping plate 15, and the contacting battery clamping plate 15 corresponds to the flat battery 20 adjacent to the storage top plate 17. Figure 5 and Figure 6 In the middle, the clamping plate guide shaft passes through the battery pressure plate 19, and the battery pressure plate 19 cooperates with the clamping plate guide shaft through the linear bearing 16, so that the battery pressure plate 19 moves along the length direction of the clamping plate guide shaft.

[0091] When the battery pressure plate 19 moves in extension and retraction with the piston rod of the pressing cylinder 18, the battery is pressed towards the support base plate 12 by the battery clamping plate 15 connected to the battery pressure plate 19, or the flat battery 20 is reset by the action of the clamping plate spacer sleeve 14.

[0092] In one embodiment of this utility model, the Young's modulus elastic body 21 includes at least two first elastic blocks 22 with different Young's moduli, wherein...

[0093] For any Young's modulus elastic body 21, the first elastic blocks 21 with different Young's moduli are arranged in the direction of gradual change of Young's modulus.

[0094] Figure 7 The figure illustrates an embodiment of a Young's modulus elastomer 21 cooperating with a flat battery 20 and a battery clamp 15. The Young's modulus elastomer 21 may include at least two first elastic blocks 22 with different Young's moduli. These first elastic blocks 22 are identical except for their Young's moduli, such as having the same thickness. It should be understood that when the first elastic blocks 22 with different Young's moduli are arranged in a gradual Young's modulus direction, the arrangement should be based on providing the required gradual pressure to the flat battery 20.

[0095] In one embodiment of this utility model, the Young's modulus elastic body 21 includes at least two Young's modulus second elastic blocks 23 with different thicknesses, wherein...

[0096] For any Young's modulus elastic body 21, Young's modulus second elastic blocks 23 of different thicknesses are arranged in the direction of thickness gradient.

[0097] Figure 8 Another embodiment of the Young's modulus elastomer 21 cooperating with a flat battery 20 and a battery clamp 15 is shown. Figure 7 The difference between the embodiments shown is that the second elastic blocks 23 with Young's modulus have the same Young's modulus, but the thickness of each second elastic block 23 with Young's modulus is different. Figure 8 The diagram shows eight Young's modulus second elastic blocks 23 with different thicknesses disposed within the Young's modulus elastomer 21. Due to the different thicknesses, the pressure applied to the flat battery 20 is gradually varied when compressed.

[0098] Of course, the Young's modulus elastomer 21 can also take other forms, which can be selected according to the needs, based on the requirement of providing gradual pressure to the flat battery 20. Examples will not be given here.

[0099] It should be noted that when the flat battery 20 is pressed by the clamping force providing unit, the contact between the Young's modulus elastic group and the flat battery 20 is used to provide a gradual pressure to the flat battery 20. This method is applicable not only to pouch batteries but also to prismatic batteries.

[0100] As can be seen from the above explanation, Figures 1-4 The venting device shown in the embodiment is more suitable for square batteries to ensure the safety and reliability of the battery during formation venting as much as possible. Figures 5-6 The embodiment shown corresponds to an exhaust device suitable for flat-plate batteries; furthermore, the flat-plate battery can be a prismatic battery or a pouch battery. Additionally, Figures 1-4 The embodiments shown correspond to exhaust devices and Figures 5-6 In the embodiment shown, the batteries in the battery pack are arranged in parallel in the corresponding exhaust device.

Claims

1. An exhaust device suitable for battery formation, characterized in that, The exhaust device includes: A battery storage unit for storing a battery pack to be formed, wherein the battery pack includes at least one battery; A bubble guiding device, adapted and connected to the battery storage unit, is used to simultaneously provide a corresponding gradual pressure to each battery in the battery pack. This gradual pressure guides the bubbles within the batteries to move in the exhaust direction. When guiding the venting of any battery in the battery storage unit, based on the venting direction of the bubbles, the gradual pressure provided by the bubble guiding device is applied to the spatial location of each battery, and the provided gradual pressure gradually decreases.

2. The exhaust device suitable for battery formation according to claim 1, characterized in that, The battery storage unit includes at least a battery storage shell, and the battery pack can be stably stored inside the battery storage shell; The bubble guiding device includes a battery cell pusher adapted to the battery pack and a pusher motion drive mechanism for driving the battery cell pusher to move relative to the battery pack, wherein... The battery unit pusher includes several battery slots that allow batteries to be embedded, and the batteries in the battery pack correspond one-to-one with the battery slots of the battery unit pusher. When the pusher body is driven by the pusher body motion mechanism, the battery is embedded in the corresponding battery slot, and the bottom of the battery slot gradually approaches the battery embedded in the battery slot, so as to apply the required gradual pressure to the battery embedded in the battery slot.

3. The exhaust device suitable for battery formation according to claim 2, characterized in that, For any battery slot, the width of the battery slot gradually decreases along the direction from the slot opening to the bottom of the slot, wherein, The battery contacts the side wall of the corresponding battery slot to apply a corresponding gradual pressure to the battery embedded in the battery slot based on the slot width.

4. The exhaust device suitable for battery formation according to claim 2 or 3, characterized in that, The battery pack and battery storage case are detachably connected. A drive mechanism support frame is provided on the battery storage shell, and the push body motion drive mechanism is assembled on the drive mechanism support frame. The pusher motion drive mechanism includes a pusher cylinder mounted on a drive mechanism support frame, and the piston rod of the pusher cylinder is connected to the battery unit pusher.

5. The exhaust device suitable for battery formation according to claim 1, characterized in that, The battery storage unit includes a storage support frame, which includes a support base plate and a storage top plate corresponding to the support base plate. A battery clamping plate assembly is provided inside the storage support frame. The battery clamping plate assembly includes several battery clamping plates. Any two adjacent batteries are separated by a battery clamping plate, and the batteries adjacent to the support base plate are separated from the support base plate by a battery clamping plate. At the same time, the batteries adjacent to the storage top plate are separated from the storage top plate by a battery clamping plate. All battery clamps are fitted onto the clamp guide shaft, and the two ends of the clamp guide shaft are fixedly connected to the support base plate and the storage top plate, respectively, and the battery clamps can move along the clamp guide shaft.

6. The exhaust device suitable for battery formation according to claim 5, characterized in that, The bubble guiding device includes a gradual pressure providing unit and a clamping force providing unit for pressing the batteries together, wherein... The gradual pressure supply unit includes several Young's modulus elastic groups, wherein each Young's modulus elastic group corresponds one-to-one with a battery. The Young's modulus elastic group includes two Young's modulus elastomers, which are distributed on both sides of the battery. Each Young's modulus elastomer is located between the corresponding battery and the corresponding battery clamp, and the Young's modulus elastomer is in contact with the corresponding outer wall of the battery. When the batteries are pressed together by the clamping force supply unit, the contact between the Young's modulus elastic group and the battery is used to provide gradual pressure to the battery.

7. The exhaust device suitable for battery formation according to claim 6, characterized in that, The Young's modulus elastomer comprises at least two first elastic blocks with different Young's moduli, wherein... For any Young's modulus elastic body, the first elastic blocks with different Young's moduli are arranged according to the direction of the gradual change in Young's modulus.

8. The exhaust device suitable for battery formation according to claim 6, characterized in that, The Young's modulus elastomer includes at least two second elastic blocks of different thicknesses with different Young's moduli, wherein... For any Young's modulus elastic body, the second elastic blocks of Young's modulus with different thicknesses are arranged in the direction of gradual thickness change.

9. The exhaust device suitable for battery formation according to any one of claims 6 to 8, characterized in that, The clamping force providing unit includes a clamping cylinder, wherein... The piston rod of the clamping cylinder is connected to the battery pressure plate, which is located between the battery pack and the storage top plate, and the battery pressure plate is in contact with the battery clamp plate adjacent to the storage top plate. During the venting process, the clamping cylinder presses the battery towards the support base plate via the battery clamping plate.

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