Battery formation equipment

Abstract

The utility model provides battery formation equipment. The battery formation equipment comprises a negative pressure source, a positive pressure source, an electrolyte buffer container, a formation clamp device and a pressure relief device, the negative pressure source is used for providing negative pressure, the positive pressure source is used for providing positive pressure, the electrolyte temporary storage container is used for being communicated with a battery, the electrolyte temporary storage container is connected with the negative pressure source and the positive pressure source in an on-off mode, the formation clamp device is connected with the positive pressure source in an on-off mode so as to clamp the battery under driving of the positive pressure source, and the pressure relief device is connected with the formation clamp device. And the pressure relief device is used for releasing the positive pressure of the formation clamp device to loosen the battery when being started. The battery formation equipment disclosed by the utility model can ensure that the battery is smoothly formed, gas generated by formation is completely discharged, and meanwhile, excessive loss of electrolyte of the battery can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery production, specifically to a battery formation device. Background Technology

[0002] Battery formation is a crucial step in battery production, designed to activate the internal chemical reactions and ensure optimal performance and lifespan. During formation, the battery needs to be under negative pressure to allow for venting, and it also requires a certain amount of restraint pressure to ensure the formation reaction proceeds smoothly. Under the influence of negative pressure and restraint pressure, electrolyte leakage can occur, leading to insufficient electrolyte levels within the battery and contaminating production equipment and the environment. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a battery formation apparatus that can prevent excessive loss of electrolyte within the battery.

[0004] The battery formation equipment of this utility model embodiment includes:

[0005] A negative pressure source, wherein the negative pressure source is used to provide negative pressure;

[0006] A positive pressure source, wherein the positive pressure source is used to provide positive pressure;

[0007] An electrolyte buffer container is provided for connecting to a battery, and the electrolyte buffer container can be switched on and off to connect to the negative pressure source and the positive pressure source respectively;

[0008] A formation clamping device, which is switched to the positive pressure source to clamp the battery under the drive of the positive pressure source;

[0009] A pressure relief device is connected to the formation fixture device, and the pressure relief device is used to release the positive pressure of the formation fixture device to release the battery when it is opened.

[0010] The battery formation equipment of this embodiment features an electrolyte buffer container connected to the battery, and both a negative pressure source and a positive pressure source can be switched on and off to connect to the electrolyte buffer container. The positive pressure source can also be switched on and off to connect to the formation clamp device. The negative pressure provided by the negative pressure source ensures that the gas generated during the battery formation process is discharged, and the electrolyte carried by the gas is collected in the electrolyte buffer container. The positive pressure provided by the positive pressure source can, on the one hand, drive the formation clamp device to clamp the battery to provide the restraint pressure required for formation, and on the other hand, can return the electrolyte in the electrolyte buffer container to the battery after venting. At the same time, the pressure relief device can release the positive pressure of the clamp device to ensure that the electrolyte can flow back to the battery. Therefore, the battery formation equipment of this embodiment can ensure smooth battery formation, completely discharge the gas generated during formation, and prevent excessive electrolyte loss from the battery.

[0011] In some embodiments, the battery formation apparatus includes an exhaust state and a recirculation state;

[0012] In the venting state, the electrolyte buffer container is connected to the negative pressure source and disconnected from the positive pressure source, the formation fixture device is connected to the positive pressure source, and the pressure relief device is closed;

[0013] In the reflux state, the electrolyte buffer container is connected to the positive pressure source and disconnected from the negative pressure source, the formation fixture device is disconnected from the positive pressure source, and the pressure relief device is activated.

[0014] In some embodiments, the battery formation apparatus further includes a gas-liquid separator, which is connected to the electrolyte buffer container and is respectively connected to the negative pressure source and the positive pressure source.

[0015] In some embodiments, the battery formation apparatus further includes:

[0016] A first valve group is connected between the negative pressure source and the gas-liquid separator to control the on / off state of the negative pressure source and the gas-liquid separator;

[0017] A second valve assembly is connected between the positive pressure source and the gas-liquid separator to control the on / off state of the positive pressure source and the gas-liquid separator;

[0018] A third valve assembly is connected between the formation fixture and the positive pressure source to control the on / off state of the formation fixture and the positive pressure source.

[0019] In some embodiments, the battery formation apparatus further includes:

[0020] A first docking member is connected to the electrolyte buffer container and is used for detachably connecting the battery.

[0021] A second docking member is disposed between the pressure relief device and the positive pressure source and the formation fixture device, so that the pressure relief device and the positive pressure source are detachably connected to the formation fixture device.

[0022] In some embodiments, the pressure relief device includes a pressure relief pipe and a pressure relief valve assembly. The pressure relief pipe is connected to the pipeline between the second docking member and the positive pressure source, and the pressure relief valve assembly is disposed on the pressure relief pipe to control the opening and closing of the pressure relief pipe.

[0023] In some embodiments, the formation fixture device includes at least two fixture bodies, the at least two fixture bodies are arranged at intervals, and the space between two adjacent fixture bodies is used to place the corresponding battery;

[0024] The clamp body includes:

[0025] A fixing plate having an inner cavity, the inner cavity being connectable and disconnectable to the positive pressure source, and the inner cavity being connected to the pressure relief device;

[0026] A telescopic plate is embedded in the fixed plate, with one end of the telescopic plate located in the inner cavity. The telescopic plate moves along the spacing direction of the clamp body under the pressure of the inner cavity.

[0027] In some embodiments, the clamp body further includes a support base disposed at the bottom end of the fixing plate, the support base extending along the spacing direction of the clamp body to support the battery.

[0028] In some embodiments, the top surface of the support is provided with a slot for inserting the battery, and the other end of the telescopic plate is located in the slot.

[0029] In some embodiments, the clamp bodies are at least three arranged at intervals. Along the direction of the interval arrangement of the clamp bodies, the end of the clamp body facing the adjacent clamp body has the telescopic plate and the bearing seat, and the middle clamp body has corresponding telescopic plates and corresponding bearing seats at both ends along the interval arrangement direction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the battery formation equipment according to an embodiment of the present invention;

[0031] Figure 2 yes Figure 1A schematic diagram of the structure of the first embodiment of the clamping body;

[0032] Figure 3 yes Figure 1 A schematic diagram of the structure of a second embodiment of the clamp body.

[0033] Figure label:

[0034] 1. Negative pressure source; 2. Positive pressure source; 3. Electrolyte buffer container; 4. Battery; 5. Formation fixture device; 51. Fixture body; 511. Fixing plate; 512. Telescopic plate; 513. Bearing seat; 514. Slot; 6. Pressure relief device; 61. Pressure relief pipe; 62. Pressure relief valve assembly; 7. Gas-liquid separator; 8. First valve assembly; 9. Second valve assembly; 10. Third valve assembly; 11. First docking part; 12. Second docking part. Detailed Implementation

[0035] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The following is for reference. Figures 1-3 This invention describes a battery formation apparatus according to an embodiment of the present invention.

[0037] like Figures 1-3 As shown, the battery formation equipment of this utility model embodiment includes a negative pressure source 1, a positive pressure source 2, an electrolyte buffer container 3, a formation fixture device 5, and a pressure relief device 6.

[0038] Negative pressure source 1 provides negative pressure. Positive pressure source 2 provides positive pressure. Electrolyte buffer container 3 connects to battery 4 and is configurably connected to both negative pressure source 1 and positive pressure source 2. Formation clamp device 5 is configurably connected to positive pressure source 2 to clamp battery 4 under the drive of positive pressure source 2. Pressure relief device 6 is connected to formation clamp device 5 and is used to release the positive pressure of formation clamp device 5 to release battery 4 when opened.

[0039] Specifically, such as Figure 1 As shown, the battery 4 is disposed on the formation fixture device 5. The formation fixture device 5 is connected to the positive pressure source 2 in a switchable manner. When the formation fixture device 5 is connected to the positive pressure source 2, the positive pressure provided by the positive pressure source 2 is supplied to the formation fixture device 5, so that the formation fixture device 5 clamps the battery 4 to provide the restraint pressure required for formation to the battery 4.

[0040] The top of battery 4 is connected to the bottom of electrolyte buffer container 3. The top of electrolyte buffer container 3 is connected to positive pressure source 2 in a switchable manner, and also to negative pressure source 1 in a switchable manner. When negative pressure source 1 is connected to electrolyte buffer container 3, the negative pressure provided by negative pressure source 1 acts on battery 4 through electrolyte buffer container 3, thereby venting the gas generated in battery 4. The electrolyte carried by the gas is collected by electrolyte buffer container 3. When positive pressure source 2 is connected to electrolyte buffer container 3, the positive pressure provided by positive pressure source 2 acts on battery 4 through electrolyte buffer container 3, thereby causing the electrolyte stored in electrolyte buffer container 3 to flow back into battery 4.

[0041] The formation fixture 5 is also connected to the pressure relief device 6. When the formation fixture 5 is disconnected from the positive pressure source 2 and the pressure relief device 6 is turned on, the pressure relief device 6 releases the positive pressure of the formation fixture 5, and the formation fixture 5 eliminates the pressure on the battery 4. At this time, the positive pressure source 2 is connected to the electrolyte buffer container 3, which can ensure that the electrolyte stored in the electrolyte buffer container 3 flows back into the battery 4, and avoid the electrolyte from not being able to flow back due to the clamping of the formation fixture 5.

[0042] The battery formation equipment of this embodiment features an electrolyte buffer container connected to the battery, and both a negative pressure source and a positive pressure source can be switched on and off to connect to the electrolyte buffer container. The positive pressure source can also be switched on and off to connect to the formation clamp device. The negative pressure provided by the negative pressure source ensures that the gas generated during the battery formation process is discharged, and the electrolyte carried by the gas is collected in the electrolyte buffer container. The positive pressure provided by the positive pressure source can, on the one hand, drive the formation clamp device to clamp the battery to provide the restraint pressure required for formation, and on the other hand, can return the electrolyte in the electrolyte buffer container to the battery after venting. At the same time, the pressure relief device can release the positive pressure of the clamp device to ensure that the electrolyte can flow back to the battery. Therefore, the battery formation equipment of this embodiment can ensure smooth battery formation, completely discharge the gas generated during formation, and prevent excessive electrolyte loss from the battery.

[0043] In some embodiments, the battery formation apparatus of this utility model includes an exhaust state and a recirculation state.

[0044] In the venting state, the electrolyte buffer container 3 is connected to the negative pressure source 1 and disconnected from the positive pressure source 2, the formation fixture device 5 is connected to the positive pressure source 2, and the pressure relief device 6 is closed.

[0045] At this time, the negative pressure provided by the negative pressure source 1 is applied to the battery 4 through the electrolyte buffer container 3, and the positive pressure provided by the positive pressure source 2 is supplied to the formation fixture device 5 so that the formation fixture device 5 holds the battery 4. The battery 4 is formed under the restraint pressure provided by the formation fixture device 5. The generated gas is discharged from the top of the battery under the adsorption of the pressure applied by the formation fixture device 5 and the negative pressure of the negative pressure source 1, and passes through the electrolyte buffer container 3. The electrolyte carried by the gas is collected by the electrolyte buffer container 3.

[0046] In the reflux state, the electrolyte buffer container 3 is connected to the positive pressure source 2 and disconnected from the negative pressure source 1, the formation fixture device 5 is disconnected from the positive pressure source 2, and the pressure relief device 6 is activated.

[0047] At this time, the positive pressure provided by the positive pressure source 2 is applied to the battery 4 through the electrolyte buffer container 3. The electrolyte stored in the electrolyte buffer container 3 flows back to the battery 4 under the action of positive pressure. At the same time, since the formation fixture device 5 is disconnected from the positive pressure source 2, the pressure relief device 6 is opened. Therefore, the positive pressure of the formation fixture device 5 is released, the pressure applied by the formation fixture device 5 to the battery 4 is eliminated, and the battery 4 can accommodate the backflowing electrolyte.

[0048] The electrolyte buffer container 3 preferably, but not limited to, uses a pressure control system to regulate the connection and disconnection with the negative pressure source 1 and the positive pressure source 2, thereby switching the electrolyte buffer container 3 between the venting state and the reflux state.

[0049] It should be noted that during the formation process, the venting state and the reflux state can be implemented once in sequence, or they can be implemented in sequence and repeated multiple times.

[0050] In some embodiments, the battery formation device of this utility model further includes a gas-liquid separator 7, which is connected to the electrolyte buffer container 3, and the gas-liquid separator 7 can be switched on and off connected to the negative pressure source 1 and the positive pressure source 2 respectively.

[0051] like Figure 1 As shown, the gas-liquid separator 7 is connected between the negative pressure source 1 and the positive pressure source 2 and the electrolyte buffer container 3 via pipelines. Specifically, one end of the gas-liquid separator 7 is connected to the top of the electrolyte buffer container 3 via a pipeline, and the other end of the gas-liquid separator 7 is connected to the parallel negative pressure source 1 and the positive pressure source 2 via a pipeline. The gas-liquid separator 7 is connected to the negative pressure source 1 and to the positive pressure source 2 in a way that allows the electrolyte buffer container 3 to be indirectly connected to both the negative pressure source 1 and the positive pressure source 2 in a way that allows it to be connected ...

[0052] When the negative pressure source 1 provides negative pressure to the battery 4 through the electrolyte buffer container 3, the discharged gas and the electrolyte are separated by the gas-liquid separator 7. The separated gas is discharged to the atmosphere, while the separated electrolyte is retained in the pipeline and collected in the electrolyte buffer container 3. At the same time, the electrolyte can also prevent the negative pressure source 1 from being corroded.

[0053] In some embodiments, the battery formation apparatus of this utility model further includes a first valve group 8, a second valve group 9, and a third valve group 10.

[0054] The first valve group 8 is connected between the negative pressure source 1 and the gas-liquid separator 7 to control the on / off state of the negative pressure source 1 and the gas-liquid separator 7. The second valve group 9 is connected between the positive pressure source 2 and the gas-liquid separator 7 to control the on / off state of the positive pressure source 2 and the gas-liquid separator 7. In other words, the pressure control system includes the first valve group 8 and the second valve group 9. The first valve group 8 regulates the on / off state of the negative pressure source 1 and the electrolyte buffer container 3, and the second valve group 9 regulates the on / off state of the positive pressure source 2 and the electrolyte buffer container 3.

[0055] The third valve group 10 is connected between the formation fixture device 5 and the positive pressure source 2 to control the on / off state of the formation fixture device 5 and the positive pressure source 2.

[0056] like Figure 1 As shown, the first valve group 8 is connected between the negative pressure source 1 and the gas-liquid separator 7 through a pipeline to control the on / off state of the negative pressure source 1 and the gas-liquid separator 7. At the same time, the gas-liquid separator 7 also serves to prevent the electrolyte from corroding the first valve group 8.

[0057] The second valve group 9 is connected between the positive pressure source 2 and the gas-liquid separator 7 via a pipeline to control the on / off state of the positive pressure source 2 and the gas-liquid separator 7.

[0058] The third valve assembly 10 is connected between the formation fixture 5 and the positive pressure source 2 via a pipeline to control the on / off state of the formation fixture 5 and the positive pressure source 2. The pressure relief device 6 is connected between the third valve assembly 10 and the formation fixture 5 to ensure that the formation fixture 5 can be depressurized.

[0059] In some embodiments, the battery formation apparatus of this utility model further includes a first docking member 11 and a second docking member 12.

[0060] The first docking member 11 is connected to the electrolyte buffer container 3 and is used to detachably connect the battery 4. The second docking member 12 is provided between the pressure relief device 6 and the positive pressure source 2 and the formation fixture device 5, so that the pressure relief device 6 and the positive pressure source 2 are detachably connected to the formation fixture device 5.

[0061] like Figure 1 As shown, the first docking member 11 is connected to the bottom of the electrolyte buffer container 3 via a pipeline. The first docking member 11 is used to detachably connect to the top of the battery 4, preferably to the electrolyte injection hole of the battery 4.

[0062] The second docking member 12 can be connected to the formation fixture device 5 and detachably connected to the pipeline of the parallel pressure relief device 6 and the positive pressure source 2. Alternatively, the second docking member 12 can be located at the end of the pipeline of the parallel pressure relief device 6 and the positive pressure source 2 and detachably connected to the formation fixture device 5. The second docking member 12 may also include a first interface and a second interface, with the first interface connected to the formation fixture device 5 and the second interface connected to the end of the pipeline of the parallel pressure relief device 6 and the positive pressure source 2, and the first and second interfaces being detachably connected. Thus, the second docking member 12 allows for the detachable connection of both the pressure relief device 6 and the positive pressure source 2 to the formation fixture device 5.

[0063] The first docking part 11 and the second docking part 12 enable the formation fixture device 5 to be detached from the negative pressure source 1, the positive pressure source 2, the electrolyte buffer container 3, the pressure relief device 6, the gas-liquid separator 7, the first valve group 8, the second valve group 9 and the third valve group 10, thereby moving the formation fixture device 5 to other workstations with more space, making it easier to remove and install the battery 4 from the formation fixture device 5.

[0064] In some embodiments, the pressure relief device 6 includes a pressure relief pipe 61 and a pressure relief valve assembly 62. The pressure relief pipe 61 is connected to the pipeline between the second docking member 12 and the positive pressure source 2. The pressure relief valve assembly 62 is provided on the pressure relief pipe 61 to control the opening and closing of the pressure relief pipe 61.

[0065] like Figure 1 As shown, the pressure relief device 6 includes a pressure relief pipe 61 and a pressure relief valve assembly 62. The pressure relief valve assembly 62 is installed on the pressure relief pipe 61 to control the opening and closing of the pressure relief pipe 61. One end of the pressure relief pipe 61 is connected to the pipeline between the second docking member 12 and the positive pressure source 2, so that the formation fixture device 5 can be separated from the pressure relief device 6 through the second docking member 12. When the pressure relief valve assembly 62 is open and the third valve assembly 10 is closed, the positive pressure in the formation fixture device 5 enters the pressure relief pipe 61 after passing through the connected second docking member 12, and is then released from the pressure relief pipe 61.

[0066] It is understandable that the structure of the pressure relief device is not limited to, for example... Figure 1 In some embodiments of the structure, the pressure relief device is a switch valve located on the pipeline between the second docking member 12 and the positive pressure source 2 via a tee, or the pressure relief device is located on the chemical formation fixture device 5.

[0067] In some embodiments, the formation fixture device 5 includes at least two fixture bodies 51, which are arranged at intervals, with a corresponding battery 4 positioned between adjacent fixture bodies 51. Each fixture body 51 includes a fixed plate 511 and a telescopic plate 512. The fixed plate 511 has an inner cavity that is responsively connected to a positive pressure source 2 and connected to a pressure relief device 6. The telescopic plate 512 is embedded in the fixed plate 511, with one end of the telescopic plate 512 located within the inner cavity. The telescopic plate 512 moves along the interval arrangement direction of the fixture bodies 51 under the pressure of the inner cavity.

[0068] like Figures 1-3 As shown, the formation fixture device 5 includes at least two fixture bodies 51, which are arranged at intervals in the left-right direction, and a battery 4 is disposed between two adjacent fixture bodies 51.

[0069] The fixture body 51 includes a fixed plate 511 and a telescopic plate 512. Both the fixed plate 511 and the telescopic plate 512 are vertically arranged plates. Preferably, the vertical dimensions of the fixed plate 511 and the telescopic plate 512 are larger than the vertical dimensions of the battery 4.

[0070] The fixing plate 511 has an inner cavity. The second docking piece 12 is connected to the fixing plate 511 through a pipeline and communicates with the inner cavity so that the inner cavity is connected to the pressure relief device 6 and the positive pressure source 2.

[0071] The telescopic plate 512 is embedded in the left-right end of the fixed plate 511. The telescopic plate 512 has an inner end and an outer end that are opposite to each other in the left-right direction. The inner end is located in the inner cavity, and the outer end is located outside the fixed plate 511. The telescopic plate 512 can move in the left-right direction under the pressure of the inner cavity. Specifically, when the positive pressure source 2 is connected to the inner cavity and the pressure relief device 6 is closed, the positive pressure provided by the positive pressure source 2 is transmitted to the inner cavity. The telescopic plate 512 moves outward under the drive of the positive pressure in the inner cavity to apply pressure to the battery 4. Since the battery 4 has corresponding clamp bodies 51 on both the left and right sides, the battery 4 is clamped by the telescopic plates 512 of the clamp bodies 51 on both sides. When the positive pressure source 2 is disconnected from the inner cavity and the pressure relief device 6 is opened, the positive pressure in the inner cavity is released by the pressure relief device 6. At this time, the telescopic plate 512 moves inward under the action of external force. For example, when the electrolyte flows back into the battery 4, causing the battery 4 to expand, the battery 4 can push the telescopic plate 512 to move inward.

[0072] In some embodiments, the clamp body 51 further includes a support seat 513, which is disposed at the bottom end of the fixing plate 511 and extends along the spacing direction of the clamp body 51 to support the battery 4.

[0073] like Figures 1-3As shown, the bottom end of the fixed plate 511 is provided with a support seat 513, which extends in the left and right direction. The battery 4 is placed on the support seat 513 to ensure that the battery 4 is stably placed in the formation fixture device 5, and also to ensure that the telescopic plate 512 can abut against the battery 4 and apply pressure.

[0074] In some embodiments, the top surface of the support 513 is provided with a slot 514 for inserting the battery 4, and the other end of the telescopic plate 512 is located in the slot 514.

[0075] like Figure 2 and Figure 3 As shown, the top surface of the support 513 is provided with a slot 514, and the bottom of the battery 4 is inserted into the corresponding slot 514 to ensure that the battery 4 is stably positioned. The outer end of the telescopic plate 512 is located in the slot 514 and can move in the left and right direction within the slot 514, thereby ensuring that the telescopic plate 512 can abut against the battery 4 and apply pressure.

[0076] In some embodiments, there are at least three clamp bodies 51 arranged at intervals. Along the direction of the interval arrangement of the clamp bodies 51, the end of the clamp body 51 facing the adjacent clamp body 51 has a telescopic plate 512 and a support seat 513, and the middle clamp body 51 has a corresponding telescopic plate 512 and a corresponding support seat 513 at both ends along the interval arrangement direction.

[0077] like Figures 1-3 As shown, the fixture body 51 has two embodiments.

[0078] like Figure 2 The first embodiment of the clamp body 51 is shown. The fixing plate 511 has corresponding telescopic plates 512 and bearing seats 513 on both its left and right sides. Specifically, the fixing plate 511 includes a body and side plates. Side plates are provided on both the left and right sides of the body. The body has an inner cavity that extends through the body in the left-right direction. The side plates have telescopic holes that extend through the side plates in the left-right direction. The inner cavity connects the two telescopic holes, and the vertical dimension of the inner cavity is larger than the vertical dimension of the telescopic holes, so that a first step is formed between the body and the side plates.

[0079] Each side plate has a corresponding telescopic plate 512 through its telescopic hole. Specifically, the telescopic plate 512 includes a narrow section and a wide section. The narrow section is located at the outer end of the wide section, and the vertical dimension of the narrow section is smaller than that of the wide section, so that a second step is formed between the narrow section and the wide section. The narrow section passes through the telescopic hole, and the outer peripheral surface of the narrow section abuts against the hole wall of the telescopic hole. The wide section is located in the inner cavity, and the outer peripheral surface of the wide section abuts against the inner peripheral surface of the inner cavity.

[0080] There is a certain gap between the inner walls of the two telescopic plates 512. The inner wall of the inner cavity is provided with an opening that connects to the second docking member 12. The opening is located between the inner walls of the two telescopic plates 512. The positive pressure provided by the positive pressure source 2 is transmitted to the gap space between the two telescopic plates 512 through the opening and drives the two telescopic plates 512 to move away from each other, so that the left telescopic plate 512 applies pressure to the battery 4 on the left side of the clamp body 51, and the right telescopic plate 512 applies pressure to the battery 4 on the right side of the clamp body 51. During the movement of the telescopic plates 512, the first step can stop the second step to prevent the telescopic plates 512 from detaching from the fixed plate 511.

[0081] The bottom of the left side plate has a support seat 513 extending to the left, and the left end of the left telescopic plate 512 is located in the slot 514 of the left support seat 513. The bottom of the right side plate has a support seat 513 extending to the right, and the right end of the right telescopic plate 512 is located in the slot 514 of the right support seat 513. The slots of the support seats 513 on both sides are used to insert the corresponding batteries 4, so that the clamp body 51 can apply pressure to two batteries 4 at the same time. Preferably, the side plate is detachably connected to the body to facilitate the disassembly and assembly of the telescopic plate 512, and the side plate is integrally connected to the support seat 513.

[0082] like Figure 3 The second embodiment of the clamp body 51 is shown. The fixing plate 511 further includes a sealing plate, which is a plate arranged in a vertical direction. The body is disposed between the side plate and the sealing plate. In other words, one end of the body is provided with a side plate and the other end is provided with a sealing plate.

[0083] One end of the inner cavity is connected to the telescopic hole of the side plate, and the other end of the inner cavity is sealed by the sealing plate. The telescopic plate 512 passes through the telescopic hole of the side plate. The opening provided on the inner wall of the inner cavity is located between the inner wall of the telescopic plate 512 and the inner wall of the sealing plate. The positive pressure provided by the positive pressure source 2 is transmitted through the opening to the inner wall of the telescopic plate 512 and the inner wall of the sealing plate, and drives the telescopic plate 512 away from the sealing plate in the left and right direction.

[0084] The bottom of the side plate is provided with a support base 513 extending away from the sealing plate in the left-right direction. The support base 513 is provided with a slot 514 for inserting the corresponding battery 4. The outer end of the telescopic plate 512 is located in the slot 514 and can move in the left-right direction to apply pressure to the battery 4. Therefore, the clamp body 51 of the second embodiment only applies pressure to one battery 4.

[0085] like Figure 1As shown, at least three clamp bodies 51 are arranged at intervals along the left-right direction, preferably six. The clamp bodies 51 located at both ends of the arrangement direction adopt the clamp bodies 51 of the second embodiment, and the inner end of the clamp body 51 has a telescopic plate 512. The clamp bodies 51 located in the middle of the arrangement direction adopt the clamp bodies 51 of the first embodiment, so that the formation clamp device 5 can clamp at least two batteries 4 at the same time, and each battery 4 has a corresponding telescopic plate 512 on both the left and right sides to ensure that each battery 4 can be subjected to the restraint pressure required for formation. At the same time, in two adjacent clamp bodies 51, the support seat 513 of one clamp body 51 can abut and connect with the support seat 513 on the opposite side of the other clamp body 51 to jointly support the battery 4, thereby ensuring the installation stability of the battery 4.

[0086] At least two first docking parts 11 are provided, each corresponding to a battery 4. Each first docking part 11 is connected to a corresponding electrolyte buffer container 3 through a corresponding pipeline. Therefore, at least two electrolyte buffer containers 3 are also provided, each corresponding to a battery 4. The at least two electrolyte buffer containers 3 are connected in parallel through pipelines to the same gas-liquid separator 7, so that the electrolyte buffer container 3 stores the electrolyte carried by the exhaust gas in the corresponding battery 4, thereby ensuring the amount of electrolyte in each battery 4 after electrolyte reflux.

[0087] The chemical formation fixture device 5 also includes a connecting pipe. One end of the connecting pipe is provided with a second docking member 12 or is docked with a second docking member 12. The other end of the connecting pipe is provided with multiple branches, which are connected one-to-one with multiple fixture bodies 51, and each branch communicates with a corresponding internal cavity. This reduces the number of second docking members 12 required, avoiding the risk of leakage due to an excessive number of second docking members 12. At the same time, setting up the connecting pipe to install or dock with the second docking members 12 also ensures the stability of the connection of the second docking members 12.

[0088] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0089] Furthermore, the terms "first" and "second" are used only for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0090] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0091] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0092] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A battery formation apparatus, characterized in that, include: A negative pressure source (1) is used to provide negative pressure; A positive pressure source (2) is used to provide positive pressure; An electrolyte buffer container (3) is used to connect to a battery (4). The electrolyte buffer container (3) can be switched on and off between the negative pressure source (1) and the positive pressure source (2). A formation clamping device (5) is connected to the positive pressure source (2) in a switchable manner to clamp the battery (4) under the drive of the positive pressure source (2); A pressure relief device (6) is connected to the formation fixture device (5) and is used to release the positive pressure of the formation fixture device (5) to release the battery (4) when it is turned on.

2. The battery formation equipment according to claim 1, characterized in that, Including exhaust state and recirculation state; In the venting state, the electrolyte buffer container (3) is connected to the negative pressure source (1) and disconnected from the positive pressure source (2), the formation fixture device (5) is connected to the positive pressure source (2), and the pressure relief device (6) is closed; In the reflux state, the electrolyte buffer container (3) is connected to the positive pressure source (2) and disconnected from the negative pressure source (1), the formation fixture device (5) is disconnected from the positive pressure source (2), and the pressure relief device (6) is turned on.

3. The battery formation equipment according to claim 1, characterized in that, It also includes a gas-liquid separator (7), which is connected to the electrolyte buffer container (3), and the gas-liquid separator (7) can be switched on and off to connect to the negative pressure source (1) and the positive pressure source (2).

4. The battery formation equipment according to claim 3, characterized in that, Also includes: A first valve group (8) is connected between the negative pressure source (1) and the gas-liquid separator (7) to control the on / off state of the negative pressure source (1) and the gas-liquid separator (7); The second valve group (9) is connected between the positive pressure source (2) and the gas-liquid separator (7) to control the on / off state of the positive pressure source (2) and the gas-liquid separator (7); A third valve assembly (10) is connected between the formation fixture device (5) and the positive pressure source (2) to control the on / off state of the formation fixture device (5) and the positive pressure source (2).

5. The battery formation equipment according to claim 1, characterized in that, Also includes: A first docking member (11) is connected to the electrolyte buffer container (3) and is used to detachably connect the battery (4). The second docking part (12) is disposed between the pressure relief device (6) and the positive pressure source (2) and the formation fixture device (5) so that the pressure relief device (6) and the positive pressure source (2) are detachably connected to the formation fixture device (5).

6. The battery formation apparatus according to claim 5, characterized in that, The pressure relief device (6) includes a pressure relief pipe (61) and a pressure relief valve assembly (62). The pressure relief pipe (61) is connected to the pipeline between the second docking member (12) and the positive pressure source (2). The pressure relief valve assembly (62) is provided on the pressure relief pipe (61) to control the opening and closing of the pressure relief pipe (61).

7. The battery formation equipment according to claim 1, characterized in that, The formation fixture device (5) includes at least two fixture bodies (51), the at least two fixture bodies (51) are arranged at intervals, and the corresponding battery (4) is set between two adjacent fixture bodies (51); The clamp body (51) includes: A fixing plate (511) is provided with an inner cavity, which is connected to the positive pressure source (2) in a way that can be switched on and off, and the inner cavity is connected to the pressure relief device (6); Telescopic plate (512) is embedded in the fixed plate (511), and one end of the telescopic plate (512) is located in the inner cavity. The telescopic plate (512) moves along the spaced arrangement direction of the clamp body (51) under the pressure drive of the inner cavity.

8. The battery formation apparatus according to claim 7, characterized in that, The clamp body (51) also includes a support seat (513), which is located at the bottom end of the fixing plate (511) and extends along the spacing direction of the clamp body (51) to support the battery (4).

9. The battery formation apparatus according to claim 8, characterized in that, The top surface of the support (513) is provided with a slot (514) for inserting the battery (4), and the other end of the telescopic plate (512) is located in the slot (514).

10. The battery formation apparatus according to claim 8, characterized in that, The clamp bodies (51) are at least three arranged at intervals. Along the direction of the arrangement of the clamp bodies (51), the end of the clamp body (51) facing the adjacent clamp body (51) has the telescopic plate (512) and the bearing seat (513). The middle clamp body (51) has corresponding telescopic plates (512) and corresponding bearing seats (513) at both ends along the direction of the arrangement.

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