Battery formation control system

Abstract

The application relates to a battery formation control system, wherein a formation device is connected to a battery to be tested, the formation device is provided with a first transmission channel, the first transmission channel is communicated with the battery to be tested; a first separator is communicated with the first transmission channel; a switch module is communicated with the first separator and a vacuum source; a control device is connected to the switch module and the vacuum source; the control device detects the gas flow transmitted by the first separator, and controls the opening degree of the switch module according to the gas flow, so that the negative pressure parameter in the negative pressure formation process is automatically adjusted, the situation that the negative pressure parameter in the formation process does not match the actual gas production is avoided, the negative pressure formation parameter can be reasonably controlled in the formation process of the battery to be tested, the excessive liquid loss caused by the excessively large negative pressure in the formation process or the poor interface of the battery pole piece formed by the excessively small negative pressure is avoided, the matching accuracy of the negative pressure parameter in the battery formation process is improved, and the performance difference of the battery is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery formation control system. Background Technology

[0002] The formation process is a crucial step in battery manufacturing. It activates the positive and negative electrode materials inside the battery, improving charge and discharge performance and extending battery life. Simultaneously, the formation process helps eliminate impurities and gases within the battery, enhancing its consistency and stability.

[0003] Currently, in the negative pressure formation process of batteries, existing formation equipment requires the negative pressure parameters to be preset manually. This can easily lead to excessive negative pressure, resulting in excessive liquid loss, or insufficient negative pressure, resulting in poor battery electrode interface. The large error in matching negative pressure parameters leads to significant differences in battery performance. Utility Model Content

[0004] Based on this, a battery formation control system is provided.

[0005] In a first aspect, this application provides a battery formation control system, comprising: The formation equipment is used to connect to the battery under test. The formation equipment is equipped with a first transmission channel, which is connected to the battery under test. The first separator is connected to the first transmission channel; The switching module is used to connect the first separator and the vacuum source; The control device is connected to the switch module and the vacuum source respectively; the control device is configured to detect the gas flow rate transmitted by the first separator and control the opening degree of the switch module according to the gas flow rate.

[0006] In one embodiment, the control device includes a detection module and a control module; The detection module is connected between the first separator and the switch module, and the control module is connected to both the detection module and the switch module.

[0007] In one embodiment, the control module includes a programmable controller and a control terminal; The control terminal is connected to the programmable controller, which in turn is connected to the detection module and the switch module.

[0008] In one embodiment, the detection module includes a gas flow detector; The input terminal of the gas flow detector is connected to the first separator, the output terminal of the gas flow detector is connected to the switch module, and the control terminal of the gas flow detector is connected to the control module.

[0009] In one embodiment, the switching module includes a proportional valve; The input end of the proportional valve is connected to the detection module, the output end of the proportional valve is used to output the formation gas generated by the battery under test, and the control end of the proportional valve is connected to the control module.

[0010] In one embodiment, the battery formation control system further includes a second separator; The output of the proportional valve is connected to the input of the second separator, and the output of the second separator is used to connect to a vacuum source.

[0011] In one embodiment, the first transmission channel is provided with a formation container and a formation pipe; The formation container is installed on the formation equipment. The first end of the formation container is connected to the liquid injection port of the battery under test, and the second end of the formation container is connected to the first end of the formation pipeline. The second end of the formation pipeline is connected to the first separator.

[0012] In one embodiment, the battery formation control system further includes a bus; The input end of the busbar is connected to a pipe, and the output end of the busbar is connected to the first separator.

[0013] In one embodiment, the battery formation control system further includes a second transmission channel and a third transmission channel; The first end of the second transmission channel is connected to the first separator, and the second end of the second transmission channel is connected to the detection module; the first end of the third transmission channel is connected to the detection module, and the second end of the third transmission channel is connected to the switch module.

[0014] In one embodiment, the formation device is provided with a formation probe and a temperature probe; The formation probe is used to connect to the electrodes of the battery under test, while the temperature probe is placed against one side of the battery under test.

[0015] One of the above technical solutions has the following advantages and beneficial effects: The aforementioned battery formation control system includes a formation device, a first separator, a switching module, and a control device. The formation device is used to connect to the battery under test and is equipped with a first transmission channel connected to the battery under test. The first separator is connected to the first transmission channel. The switching module is used to connect the first separator and a vacuum source. The control device is connected to both the switching module and the vacuum source. The control device is configured to detect the gas flow rate transmitted by the first separator and control the opening degree of the switching module based on the gas flow rate, thereby automatically adjusting the negative pressure parameters during the negative pressure formation process to avoid unrealistic gas production during the formation process. By incorporating a first separator, a switching module, and a control device into the negative pressure pipeline of the formation device, this application can reasonably control the negative pressure formation parameters during the formation process of the battery under test, avoiding excessive liquid loss due to excessive negative pressure or poor electrode interface caused by insufficient negative pressure. This improves the accuracy of negative pressure parameter matching during battery formation and reduces battery performance differences. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first structure of the battery formation control system in an embodiment of this application; Figure 2 This is a schematic diagram of the second structure of the battery formation control system in an embodiment of this application; Figure 3 This is a schematic diagram of the third structure of the battery formation control system in an embodiment of this application.

[0017] Figure label: 10. Formation equipment; 110. Formation probe; 120. Temperature probe; 20. First separator; 30. Switching module; 310. Proportional valve; 40. Control device; 410. Detection module; 412. Gas flow detector; 420. Control module; 422. Programmable controller; 424. Control terminal; 50. Vacuum source; 60. Second separator; 70. Manifold; 810. First transmission channel; 812. Formation container; 814. Formation pipeline; 820. Second transmission channel; 830. Third transmission channel; 90. Battery under test. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] In addition, the term "multiple" should mean two or more.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] In one embodiment, such as Figure 1 As shown, a battery formation control system is also provided, including a formation device 10, a first separator 20, a switching module 30, and a control device 40. The formation device 10 is used to connect to a battery 90 under test. The formation device 10 is provided with a first transmission channel 810, which is connected to the battery 90 under test. The first separator 20 is connected to the first transmission channel 810. The switching module 30 is used to connect the first separator 20 and a vacuum source 50. The control device 40 is connected to the switching module 30 and the vacuum source 50 respectively. The control device 40 is configured to detect the gas flow rate transmitted by the first separator 20 and control the opening degree of the switching module 30 according to the gas flow rate.

[0023] The battery under test 90 can be a lithium-ion battery, and its shape can be, but is not limited to, square. The battery under test 90 has a casing, the material of which can be, but is not limited to, aluminum. The formation process of the battery under test 90 is the first charging process after electrolyte injection. This formation process activates the active materials in the battery, putting it in an activated state. Simultaneously, the lithium salt reacts with the electrolyte to form a solid electrolyte film on the negative electrode side of the battery. This film prevents further side reactions, thereby reducing the loss of active lithium in the battery.

[0024] The formation device 10 is electrically connected to the battery under test 90, and is used to charge and discharge the battery under test 90 for activation. During this process, flammable gases volatilized from the electrolyte of the battery under test 90 and waste gases generated by the electrochemical reaction may form an explosive environment. Therefore, in order to reduce the residence of waste gases inside the battery under test 90 and enable the waste gases to escape quickly, a negative pressure formation method is required to discharge the waste gases.

[0025] The formation device 10 is also used to connect to the liquid injection port of the battery under test 90 via a first transmission channel 810, which is used to transmit the gas generated inside the battery under test 90. For example, the first port of the first transmission channel 810 can be connected to the liquid injection port of the battery under test 90 by means of plug-in or screw connection, and the second port of the first transmission channel 810 can be connected to the first separator 20 by means of plug-in or screw connection. The vacuum source 50 can be a vacuum pump, which is used to extract the gas generated inside the battery under test 90 to drive the gas to be transmitted through the first transmission channel 810, so that the battery under test 90 forms a negative pressure formation state.

[0026] The first separator 20 can be a gas-liquid two-phase separator. The first separator 20 is used to separate the gas transported by the first transmission channel 810 into gas and liquid components to separate the liquid components entrained in the gas. It should be noted that the first separator 20 is provided with a drain port, which is used to discharge the liquid obtained from the gas-liquid separation.

[0027] There is a connecting pipe between the switch module 30 and the first separator 20, and a corresponding connecting pipe between the switch module 30 and the vacuum source 50. The control device 40 is connected to the vacuum source 50, and the control device 40 controls the vacuum source 50 to start working. Then, the vacuum source 50 extracts the gas from the corresponding pipe, so that the corresponding pipe forms a negative pressure, so as to transmit the gas generated in the battery under test 90 sequentially to the first transmission channel 810, the first separator 20, the switch module 30 and the corresponding connecting pipe, thereby realizing the control of the discharge of the gas generated by the battery under test 90.

[0028] The control device 40 can be used to detect the gas flow rate output by the first separator 20, and the control device 40 is also used to control the opening degree of the switching device. Based on the connection between the control device 40 and the switching module 30 and the vacuum source 50, when the battery under test 90 is placed on the formation device 10, the formation device 10 is started to form the battery under test 90. The control device 40 controls the vacuum source 50 to start, so that a negative pressure is formed in the channel between the battery under test 90 and the vacuum source 50, thereby extracting the gas generated during the formation process of the battery under test 90. The control device 40 detects the gas flow rate output by the first separator in real time, and controls the opening degree of the switching module 30 according to the gas flow rate, so as to adjust the opening degree of the switching module 30 according to the amount of gas generated by the battery under test 90.

[0029] For example, in the early stage of battery formation, the current is small and the gas production is small, so the gas flow rate detected by the control device 40 is small; in the middle stage of formation, the current increases and the reaction between the electrode and the electrolyte is intense, resulting in a larger gas production, so the gas flow rate detected by the control device 40 is larger. According to the gas flow rate, the opening degree of the switch module 30 is adjusted in a timely manner to avoid excessive liquid loss due to excessive negative pressure during the formation process or poor battery electrode interface caused by insufficient negative pressure.

[0030] In the above embodiments, based on the formation device 10 connected to the battery under test 90, the formation device 10 is provided with a first transmission channel 810, which is connected to the battery under test 90; the first separator 20 is connected to the first transmission channel 810; the switch module 30 is used to connect the first separator 20 and the vacuum source 50; the control device 40 is connected to the switch module 30 and the vacuum source 50 respectively; the control device 40 is configured to detect the gas flow rate transmitted by the first separator 20, and control the on / off state of the switch module 30 according to the gas flow rate, so as to realize the automatic adjustment of the negative pressure parameter in the negative pressure formation process, and avoid the negative pressure parameter in the formation process from producing gas in a way that is not in line with the actual gas production. This application, by setting a first separator 20, a switch module 30, and a control device 40 in the negative pressure pipeline of the formation equipment 10, can reasonably control the negative pressure formation parameters during the formation process of the battery under test 90, avoid excessive liquid loss due to excessive negative pressure during the formation process or poor battery electrode interface caused by insufficient negative pressure, improve the accuracy of negative pressure parameter matching during battery formation, and reduce battery performance differences.

[0031] In one embodiment, such as Figure 2 As shown, the control device 40 includes a detection module 410 and a control module 420; the detection module 410 is connected between the first separator 20 and the switch module 30, and the control module 420 is connected to the detection module 410 and the switch module 30 respectively.

[0032] The detection module 410 is used to detect the gas flow rate output by the first separator 20 and transmit the detected gas flow rate to the control module 420.

[0033] A corresponding connecting pipe is provided between the detection module 410 and the first separator 20, and a corresponding connecting pipe is provided between the detection module 410 and the switch module 30. The detection module 410 is connected to the control module 420. When the battery 90 under test is subjected to formation operation, the detection module 410 detects the gas flow rate output by the first shunt in real time and transmits the detected gas flow rate to the control module 420. The control module 420 is connected to the switch module 30. The control module 420 controls the opening degree of the switch module 30 according to the gas flow rate. It can adjust the opening degree of the switch module 30 according to the amount of gas produced by the battery 90 under test. It can automatically adjust the negative pressure formation parameters, avoid excessive liquid loss due to excessive negative pressure during the formation process, or poor battery electrode interface caused by insufficient negative pressure. This improves the accuracy of negative pressure parameter matching during battery formation and reduces the performance difference of the battery.

[0034] In one embodiment, such as Figure 3 As shown, the control module 420 includes a programmable controller 422 and a control terminal 424; the control terminal 424 is connected to the programmable controller 422, and the programmable controller 422 is connected to the detection module 410 and the switch module 30 respectively.

[0035] Among them, the programmable controller 422 can be a PLC controller, and the control terminal 424 can be an industrial control computer.

[0036] The control terminal 424 is communicatively connected to the programmable controller 422. The programmable controller 422 can then transmit the gas flow rate transmitted by the detection module 410 to the control terminal 424. The control terminal 424 is equipped with a display interface, through which the control terminal 424 can display information such as gas flow rate in real time. The control terminal 424 can also compare the gas flow rate with the flow rate threshold, and based on the comparison result, send an opening adjustment signal to the programmable controller 422. This allows the programmable controller 422 to control the opening degree of the switch module 30 according to the opening adjustment signal, thereby automatically adjusting the negative pressure parameter during the negative pressure formation process of the battery under test 90. This avoids excessive liquid loss due to excessive negative pressure during the formation process or poor battery electrode interface caused by insufficient negative pressure, thus reducing the performance difference of the battery.

[0037] In one embodiment, such as Figure 3 As shown, the detection module 410 includes a gas flow detector 412; the input end of the gas flow detector 412 is connected to the first separator 20, the output end of the gas flow detector 412 is connected to the switch module 30, and the control end of the gas flow detector 412 is connected to the control module 420.

[0038] Among them, the gas flow detector 412 can be a gas flow meter, which is used to detect the gas flow rate transmitted by the first separator 20.

[0039] Based on the gas flow detector 412 being connected to the first separator 20 and the switch module 30 respectively, and the control module 420 being connected to the gas flow detector 412, when the battery under test 90 is being formed, the gas flow detector 412 detects the gas flow rate output by the first separator in real time and transmits the detected gas flow rate to the control module 420; the control module 420 controls the opening degree of the switch module 30 according to the gas flow rate, thereby automatically adjusting the negative pressure formation parameters, avoiding excessive liquid loss due to excessive negative pressure during the formation process or poor battery electrode interface caused by insufficient negative pressure, improving the accuracy of negative pressure parameter matching during battery formation and reducing battery performance differences.

[0040] In one embodiment, such as Figure 3 As shown, the switch module 30 includes a proportional valve 310; the input end of the proportional valve 310 is connected to the detection module 410, the output end of the proportional valve 310 is used to output the formation gas generated by the battery under test 90, and the control end of the proportional valve 310 is connected to the control module 420.

[0041] Among them, the proportional valve 310 can be a vacuum proportional valve 310.

[0042] Based on the proportional valve 310 connecting the detection module 410 and the vacuum source 50, the control module 420 is connected to the proportional valve 310. When the battery 90 under test is subjected to formation operation, the gas flow detector 412 transmits the detected gas flow to the control module 420. The control module 420 controls the opening of the proportional valve 310 according to the gas flow, so as to automatically adjust the vacuum value of the gas transmission pipeline, avoid excessive liquid loss caused by excessive negative pressure during the formation process or poor battery electrode interface caused by insufficient negative pressure, improve the accuracy of negative pressure parameter matching during battery formation, and reduce the performance difference of the battery.

[0043] In one embodiment, such as Figure 3 As shown, the battery formation control system also includes a second separator 60; the output end of the proportional valve 310 is connected to the input end of the second separator 60, and the output end of the second separator 60 is used to connect to the vacuum source 50.

[0044] The second separator 60 can be a gas-liquid two-phase separator. It is used to perform gas-liquid separation on the gas output from the switching module 30 to further separate the liquid components mixed in with the gas. It should be noted that the second separator 60 is equipped with a drain port to discharge the liquid obtained from the gas-liquid separation.

[0045] For example, when the battery under test 90 starts negative pressure formation, the control device 40 controls the vacuum source 50 to start, so that a negative pressure is formed in the channel between the battery under test 90 and the vacuum source 50, thereby extracting the gas generated during the formation process of the battery under test 90. The extracted gas passes through the first separator 20, the detection module 410, the switch module 30 and the second separator 60 in sequence to perform secondary gas-liquid separation. The detection module 410 detects the gas flow rate output by the first distributor in real time and transmits the detected gas flow rate to the control module 420. The control module 420 controls the opening degree of the switch module 30 according to the gas flow rate, so as to adjust the opening degree of the switch module 30 according to the amount of gas generated by the battery under test 90, so as to avoid excessive liquid loss due to excessive negative pressure during the formation process or poor battery electrode interface caused by insufficient negative pressure, thereby improving the accuracy of negative pressure parameter matching during battery formation and reducing battery performance differences.

[0046] In one embodiment, such as Figure 3 As shown, the first transmission channel 810 is provided with a formation container 812 and a formation pipe 814; the formation container 812 is provided on the formation equipment 10, the first end of the formation container 812 is used to connect to the liquid injection port of the battery under test 90, the second end of the formation container 812 is connected to the first end of the formation pipe 814, and the second end of the formation pipe 814 is connected to the first separator 20.

[0047] Among them, the formation container 812 can be a formation negative pressure cup.

[0048] For example, the first end of the formation container 812 is inserted into the electrolyte inlet of the battery under test 90, so that the formation container 812 is connected to the electrolyte inlet of the battery under test 90; the formation pipe 814 is respectively inserted into the second end of the formation container 812 and the input port of the first separator 20, so that the formation container 812 is connected to the first separator 20. When the vacuum source 50 is started, the formation pipe 814 forms a vacuum, extracting the gas inside the battery under test 90. At the same time as vacuuming, the electrolyte inside the battery under test 90 is extracted. The formation container 812 stores part of the electrolyte. After the negative pressure formation is completed, under the action of positive pressure, the electrolyte flows back into the battery under test 90 to prevent the battery from being defective due to insufficient electrolyte inlet after the electrolyte inside the battery under test is extracted.

[0049] In one embodiment, such as Figure 3 As shown, the battery formation control system also includes a busbar 70; the input end of the busbar 70 is connected to the formation pipe 814, and the output end of the busbar 70 is connected to the first separator 20.

[0050] The busbar 70 has multiple input terminals, and the formation pipe 814 is plugged into the corresponding input terminal of the busbar 70. The output terminal of the busbar 70 is plugged into the first separator 20, thereby enabling simultaneous negative pressure formation operations on multiple test batteries 90, improving battery formation efficiency.

[0051] In one embodiment, such as Figure 3 As shown, the battery formation control system also includes a second transmission channel 820 and a third transmission channel 830; the first end of the second transmission channel 820 is connected to the first separator 20, and the second end of the second transmission channel 820 is connected to the detection module 410; the first end of the third transmission channel 830 is connected to the detection module 410, and the second end of the third transmission channel 830 is connected to the switch module 30.

[0052] The second transmission channel 820 and the third transmission channel 830 have corresponding connecting pipes. Since the second transmission channel 820 connects the first separator 20 and the detection module 410, and the third transmission channel 830 connects the detection module 410 and the switch module 30, when the vacuum source 50 is activated, the first transmission channel 810, the second transmission channel 820, and the third transmission channel 830 form a negative pressure, thereby extracting the gas generated during the formation process of the battery under test 90. The extracted gas passes sequentially through the first transmission channel 810, the first separator 20, the second transmission channel 820, the detection module 410, the third transmission channel 830, the switch module 30, and the second separator 60. The detection module 410 detects the gas flow rate output from the second transmission channel 820 in real time and transmits the detected gas flow rate to the control module 420. The control module 420 controls the opening degree of the switch module 30 according to the gas flow rate, realizing automatic adjustment of the negative pressure vacuum value of the battery under test 90, improving the accuracy of negative pressure parameter matching during battery formation, and reducing battery performance differences.

[0053] In one embodiment, such as Figure 3 As shown, the formation apparatus 10 is provided with a formation probe 110 and a temperature probe 120; the formation probe 110 is used to connect to the electrode of the battery under test 90, and the temperature probe 120 abuts against one side of the battery under test 90.

[0054] The formation probe 110 is used to electrically connect to the electrodes of the battery under test 90. For example, the formation probe 110 includes a positive formation probe and a negative formation probe. The positive formation probe is attached to the positive electrode of the battery under test 90, and the negative formation probe is attached to the negative electrode of the battery under test 90, so as to realize the electrical connection between the formation probe 110 and the battery under test 90. Then, the formation equipment 10 charges and discharges the battery under test 90 through the formation probe 110. The temperature probe 120 is used to detect the temperature of the battery under test 90 for temperature monitoring.

[0055] For example, by placing the battery under test 90 on the formation device 10, the formation probe 110 abuts against the electrode of the battery under test 90, and the temperature probe 120 abuts against the top surface of the battery under test 90, and the formation container 812 is pressed against the liquid injection port of the battery under test 90 and kept sealed; the formation device 10 is started to charge and discharge the battery under test 90 to activate it, and the vacuum source 50 is started to make the first transmission channel 810 enter a low negative pressure state. The gas generated by the battery under test 90 enters the first separator 20 through the first transmission pipe. After the first separator 20 performs gas-liquid separation, the separated gas is obtained and enters the detection module 410. The gas flow rate of the separated gases is detected, converted into an electrical signal, and transmitted to the control module 420. The control module 420 then adjusts the opening of the switch module 30 according to the gas flow rate. Through the above adjustment, the entire negative pressure system achieves a closed-loop steady state, thus achieving a stable formation process. This enables reasonable control of negative pressure formation parameters during the battery formation process, avoiding excessive liquid loss due to excessive negative pressure or poor battery electrode interface due to insufficient negative pressure. It effectively solves the problem of mismatched negative pressure parameters during the formation process, improves the accuracy of negative pressure parameter matching during battery formation, and reduces battery performance differences.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery formation control system, characterized in that, include: A formation device, the formation device being used to connect to a battery under test, the formation device being provided with a first transmission channel, the first transmission channel being connected to the battery under test; A first separator, which is connected to the first transmission channel; A switching module is used to connect the first separator and the vacuum source; A control device, wherein the control device is connected to the switch module and the vacuum source respectively; The control device is configured to detect the gas flow rate transmitted by the first separator and control the opening degree of the switching module according to the gas flow rate.

2. The battery formation control system according to claim 1, characterized in that, The control device includes a detection module and a control module; The detection module is connected between the first separator and the switch module, and the control module is connected to both the detection module and the switch module.

3. The battery formation control system according to claim 2, characterized in that, The control module includes a programmable controller and a control terminal; The control terminal is connected to the programmable controller, and the programmable controller is connected to the detection module and the switch module respectively.

4. The battery formation control system according to claim 2, characterized in that, The detection module includes a gas flow detector; The input terminal of the gas flow detector is connected to the first separator, the output terminal of the gas flow detector is connected to the switch module, and the control terminal of the gas flow detector is connected to the control module.

5. The battery formation control system according to claim 2, characterized in that, The switching module includes a proportional valve; The input end of the proportional valve is connected to the detection module, the output end of the proportional valve is used to output the formation gas generated by the battery under test, and the control end of the proportional valve is connected to the control module.

6. The battery formation control system according to claim 5, characterized in that, It also includes a second separator; The output of the proportional valve is connected to the input of the second separator, and the output of the second separator is used to connect to a vacuum source.

7. The battery formation control system according to claim 1, characterized in that, The first transmission channel is equipped with a formation container and a formation pipeline; The formation container is disposed on the formation equipment. The first end of the formation container is connected to the liquid injection port of the battery under test. The second end of the formation container is connected to the first end of the formation pipeline. The second end of the formation pipeline is connected to the first separator.

8. The battery formation control system according to claim 7, characterized in that, It also includes busbars; The input end of the manifold is connected to the formation pipe, and the output end of the manifold is connected to the first separator.

9. The battery formation control system according to claim 2, characterized in that, It also includes a second transmission channel and a third transmission channel; The first end of the second transmission channel is connected to the first separator, and the second end of the second transmission channel is connected to the detection module; the first end of the third transmission channel is connected to the detection module, and the second end of the third transmission channel is connected to the switch module.

10. The battery formation control system according to any one of claims 1 to 9, characterized in that, The formation equipment is equipped with a formation probe and a temperature probe; The formation probe is used to connect to the electrode of the battery under test, and the temperature probe abuts against one side of the battery under test.

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