Formation and capacity grading equipment

Abstract

The utility model discloses formation and capacity grading equipment which comprises a probe assembly, a tray, a driving device and a control device. The probe assembly comprises a connecting seat, a positive electrode probe and a negative electrode probe, and the positive electrode probe and the negative electrode probe are both installed on the connecting seat; the tray is used for bearing a secondary battery, and the secondary battery comprises a positive electrode and a negative electrode; the driving device is used for driving the connecting seat and the tray to be close to each other, so that the anode probe is in contact with the anode, and the cathode probe is in contact with the cathode; the driving device is also used for driving the connecting seat and the tray to be far away from each other, so that the anode probe is separated from the anode, and the cathode probe is separated from the cathode; and the control device is used for adjusting the output force of the driving device so as to adjust the interaction force when the positive electrode probe is in contact with the positive electrode and adjust the interaction force when the negative electrode probe is in contact with the negative electrode. According to the formation and capacity grading equipment, the limiting height can be quickly adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of secondary battery formation and grading, and particularly to a formation and grading device. Background Art

[0002] When forming or grading a secondary battery (such as a lithium battery or a sodium battery), a formation and grading device is required. The formation and grading device includes a connection base, a positive probe, and a negative probe, and the positive probe and the negative probe are installed on the connection base. When the connection base approaches the secondary battery, the positive probe contacts the positive electrode of the secondary battery, and the negative probe contacts the negative electrode of the secondary battery, so as to charge and discharge the secondary battery.

[0003] In addition, in order to make the interaction force between the probe and the secondary battery within the required range, avoid poor contact between the probe and the secondary battery, and avoid pressing and damaging the secondary battery by the probe, the formation and grading device generally also has a limit post. When the distance between the connection base and the secondary battery is reduced to a set value, the connection base will contact the limit post, and the connection base cannot continue to approach the secondary battery. At this time, the interaction force between the probe and the secondary battery is within the required range, and the probe can not only fully contact the electrode of the secondary battery, but also will not press and damage the secondary battery.

[0004] In the related art, in order to be compatible with secondary batteries of different heights, the formation and grading device needs to specifically replace limit posts of different heights. The process of adjusting the limit height of the formation and grading device is time-consuming and laborious, and it is not convenient to use. Summary of the Utility Model

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. For this reason, the present application provides a formation and grading device that can quickly complete the adjustment of the limit height.

[0006] The formation and grading device according to an embodiment of the present application includes:

[0007] A probe assembly, including a connection base, a positive probe, and a negative probe, the positive probe and the negative probe are both installed on the connection base;

[0008] A tray for carrying the secondary battery, the secondary battery includes a positive electrode and a negative electrode;

[0009] A driving device for driving the connection base and the tray to approach each other, so that the positive probe contacts the positive electrode, and the negative probe contacts the negative electrode; the driving device is also used to drive the connection base and the tray to move away from each other, so that the positive probe separates from the positive electrode, and the negative probe separates from the negative electrode;

[0010] A control device for adjusting the output force of the driving device to adjust the interaction force when the positive probe contacts the positive electrode and the interaction force when the negative probe contacts the negative electrode.

[0011] The formation and formation capacity testing device according to the embodiment of the present application has at least the following beneficial effects: By adjusting the output force of the driving device through the control device, the interaction force when the positive probe contacts the positive electrode and the interaction force when the negative probe contacts the negative electrode are adjusted. Therefore, the formation and formation capacity testing device does not need to be adjusted in terms of hardware. Only by adjusting the parameters of the control device, the formation and formation capacity testing device can be made compatible with secondary batteries of different heights, and the adjustment speed of the limit height is faster.

[0012] According to some embodiments of the present application, the driving device includes an electric cylinder, and the control device includes a first controller for controlling the output force of the electric cylinder.

[0013] According to some embodiments of the present application, the first controller includes a programmable logic controller.

[0014] According to some embodiments of the present application, the driving device includes a power cylinder, and the control device includes a second controller and a proportional valve; the proportional valve is used to introduce fluid into the power cylinder to drive the connecting seat and the tray to approach each other; the second controller is used to adjust the output pressure of the proportional valve.

[0015] According to some embodiments of the present application, the power cylinder includes a cylinder, and the proportional valve includes a pneumatic proportional valve; alternatively, the power cylinder includes a hydraulic cylinder, and the proportional valve includes an electro-hydraulic proportional valve.

[0016] According to some embodiments of the present application, the control device further includes:

[0017] A pressure detection component for detecting the output pressure of the proportional valve to generate a feedback signal; the second controller is used to receive the feedback signal, and the second controller is further used to send a control signal according to the feedback signal; the proportional valve is used to receive the control signal to adjust the output pressure.

[0018] According to some embodiments of the present application, the pressure detection component includes one of a pressure gauge, a pressure sensor, and a differential pressure sensor.

[0019] According to some embodiments of the present application, one positive probe and one negative probe are set as a probe group, and there are multiple probe groups.

[0020] According to some embodiments of the present application, multiple probe groups are arranged in an array.

[0021] According to some embodiments of the present application, the connection base is slidably connected to the tray.

[0022] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application will be further described below in conjunction with the drawings and embodiments, where:

[0024] Figure 1 is a front view of the formation and grading equipment according to the first embodiment of the present application;

[0025] Figure 2 is Figure 1 a left view of the formation and grading equipment in;

[0026] Figure 3 is a schematic diagram of a secondary battery;

[0027] Figure 4 is a schematic diagram of the power cylinder and the control device of the formation and grading equipment according to the second embodiment of the present application.

[0028] Reference numerals: probe assembly 110, connection base 111, positive electrode probe 112, negative electrode probe 113, probe group 114;

[0029] tray 120;

[0030] driving device 130, power cylinder 131, first interface 132, second interface 133, piston rod 134;

[0031] control device 140, pressure detection member 141, second controller 142, proportional valve 143, power source 144;

[0032] secondary battery 200, positive electrode 210, negative electrode 220. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0034] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, "several" means one or more than one, "more" means two or more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0037] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] Reference Figures 1 to 3 According to the embodiment of the present application, the chemical dispensing device includes a probe assembly 110, a tray 120, a driving device 130 and a control device 140. The probe assembly 110 includes a connection seat 111, a positive electrode probe 112 and a negative electrode probe 113, and the positive electrode probe 112 and the negative electrode probe 113 are both installed on the connection seat 111. The tray 120 is used to carry a secondary battery 200, and the secondary battery 200 includes a positive electrode 210 and a negative electrode 220.

[0039] The driving device 130 is used to drive the connecting seat 111 and the tray 120 to approach each other, so that the positive probe 112 contacts the positive electrode 210, and the negative probe 113 contacts the negative electrode 220. The driving device 130 is also used to drive the connecting seat 111 and the tray 120 to move away from each other, so that the positive probe 112 separates from the positive electrode 210, and the negative probe 113 separates from the negative electrode 220. The control device 140 is used to adjust the output force of the driving device 130, so as to adjust the interaction force when the positive probe 112 contacts the positive electrode 210, and the interaction force when the negative probe 113 contacts the negative electrode 220.

[0040] The formation and grading equipment according to the embodiment of the present application has at least the following beneficial effects: by adjusting the output force of the driving device 130 through the control device 140, the interaction force when the positive probe 112 contacts the positive electrode 210 is adjusted, and the interaction force when the negative probe 113 contacts the negative electrode 220 is adjusted. Therefore, the formation and grading equipment does not need to be adjusted in terms of hardware. Only by adjusting the parameters of the control device 140, the formation and grading equipment can be made compatible with secondary batteries 200 of different heights, and the adjustment speed of the limit height is faster.

[0041] It should be noted that the formation and grading equipment can be used for the formation of the secondary battery 200 or for the grading of the secondary battery 200.

[0042] In some embodiments of the present application, the driving device 130 includes an electric cylinder, and the control device 140 includes a first controller, and the first controller is used to control the output force of the electric cylinder.

[0043] The control precision of the position and force of the electric cylinder is high. By controlling the output force of the electric cylinder through the first controller, it is beneficial to obtain an accurate output force, and the interaction force when the positive probe 112 contacts the positive electrode 210 and the interaction force when the negative probe 113 contacts the negative electrode 220 are both more accurate.

[0044] It should be noted that the electric cylinder generally includes a motor and a lead screw nut assembly, and the first controller usually controls the torque of the motor by controlling the input current or input voltage of the motor, and then controls the output force of the electric cylinder.

[0045] In the improved solution of the above embodiment, the first controller includes a programmable logic controller.

[0046] The programmable logic controller is applicable to servo motors or stepper motors and can be programmed, with stronger compatibility.

[0047] In other embodiments, when the electric cylinder uses a servo motor, the first controller can use a servo controller; when the electric cylinder uses a stepper motor, the first controller can use a stepper motor controller.

[0048] Referring to Figure 4 , in some embodiments of the present application, the driving device 130 includes a power cylinder 131, and the control device 140 includes a second controller 142 and a proportional valve 143. The proportional valve 143 is used to introduce fluid into the power cylinder 131 to drive the connecting seat 111 and the tray 120 to approach each other. The second controller 142 is used to adjust the output pressure of the proportional valve 143.

[0049] The power cylinder 131 has a simple structure, is easy to maintain, and has a low cost. Adjusting the output force of the power cylinder 131 through the second controller 142 and the proportional valve 143 is beneficial to reducing the cost of the formation and grading equipment.

[0050] Referring to Figure 4 , it should be noted that the power cylinder 131 is usually provided with a first interface 132 and a second interface 133. When fluid is introduced into the first interface 132, the piston rod 134 of the power cylinder 131 moves downward; when fluid is introduced into the second interface 133, the piston rod 134 of the power cylinder 131 moves upward. Since the power cylinder 131 only needs to control the interaction force when the positive probe 112 contacts the positive electrode 210 (while controlling the interaction force when the negative probe 113 contacts the negative electrode 220), when the positive probe 112 is separated from the positive electrode 210, the requirement for the magnitude of the output force of the power cylinder 131 is not high, and it only needs to separate the positive probe 112 from the positive electrode 210.

[0051] Therefore, the proportional valve 143 only needs to control the pressure of the input fluid of one of the first interface 132 and the second interface 133. For example, referring to Figure 1 , when fluid is introduced into the second interface 133, the tray 120 will move upward and then approach the connecting seat 111. In this embodiment, the proportional valve 143 only needs to control the pressure of the fluid input from the power source 144 to the second interface 133.

[0052] In an improved scheme of the above embodiment, the power cylinder 131 includes a cylinder, and the proportional valve 143 includes a pneumatic proportional valve.

[0053] Since compressed air exists in most industrial sites, it is easy for the cylinder to obtain the power source 144, and the use threshold of the cylinder is low, which is beneficial to reducing the cost of the formation and grading equipment.

[0054] In an improved scheme of the above embodiment, the power cylinder 131 includes a hydraulic cylinder, and the proportional valve 143 includes an electro-hydraulic proportional valve 143.

[0055] Due to the small compressibility of the liquid, the control accuracy of the position and force of the hydraulic cylinder is high, and the response speed is relatively fast. Therefore, it is beneficial to obtain an accurate output force, and the interaction force when the positive probe 112 contacts the positive electrode 210 and the interaction force when adjusting the negative probe 113 to contact the negative electrode 220 are more accurate.

[0056] Referring to Figure 4 , in the improvement scheme of the above embodiment, the control device 140 further includes a pressure detection component 141. The pressure detection component 141 is used to detect the output pressure of the proportional valve 143 to generate a feedback signal. The second controller 142 is used to receive the feedback signal, and the second controller 142 is also used to send a control signal according to the feedback signal. The proportional valve 143 is used to receive the control signal to adjust the output pressure.

[0057] After the pressure detection component 141 generates a feedback signal and the second controller 142 sends a control signal according to the feedback signal, a closed-loop control can be formed for the proportional valve 143, and the error of the output pressure of the proportional valve 143 is smaller.

[0058] Specifically, the second controller 142 is electrically connected to both the pressure detection component 141 and the proportional valve 143. After receiving the feedback signal from the pressure detection component 141, the second controller 142 compares it with a preset pressure value through a PID control algorithm, and then generates a control signal. The control signal can be an analog signal (such as a current signal or a voltage signal).

[0059] In the improvement scheme of the above embodiment, the pressure detection component 141 includes one of a pressure gauge, a pressure sensor, and a differential pressure sensor.

[0060] The pressure gauge, the pressure sensor, and the differential pressure sensor are all relatively easy to obtain and have a low purchase cost. Therefore, it is beneficial to reduce the cost of the formation and grading equipment.

[0061] Referring to Figure 1 , in some embodiments of the present application, one positive probe 112 and one negative probe 113 are set as a probe group 114, and there are multiple probe groups 114.

[0062] By setting multiple probe groups 114, the formation and grading equipment can perform charging and discharging on multiple secondary batteries 200 at one time, and the production efficiency of the formation and grading equipment is higher.

[0063] Specifically, the number of probe groups 114 can be two, three, four, or other numbers.

[0064] Referring to Figure 1 , in the improvement scheme of the above embodiment, multiple probe groups 114 are arranged in an array.

[0065] The position distribution of the multiple probe groups 114 arranged in an array is more regular and the position arrangement is more compact. For the same number of secondary batteries 200, the space occupied by the compactly arranged secondary batteries 200 is smaller, which is beneficial to reducing the space occupied by the formation and grading equipment.

[0066] Referring to Figure 1 , in some embodiments of the present application, the connection base 111 is slidably connected to the tray 120.

[0067] Through the sliding connection between the connection base 111 and the tray 120, the movement between the connection base 111 and the tray 120 can be guided. At least one of the connection base 111 and the tray 120 is not easily shaken during the movement, and the contact positions between the positive electrode probe 112 and the positive electrode 210, and between the negative electrode probe 113 and the negative electrode 220 are more accurate. The probability of poor contact between the positive electrode probe 112 and the positive electrode 210 is lower, and the probability of poor contact between the negative electrode probe 113 and the negative electrode 220 is lower.

[0068] Specifically, the sliding connection between the connection base 111 and the tray 120 can be realized by a slider and a slide rail, or by a slider and a chute.

[0069] The embodiments of the present application have been described in detail above with reference to the drawings. However, the present application is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present application within the scope of knowledge of those of ordinary skill in the art. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. Chemical fractionation equipment, characterized in that: Comprising: A probe assembly, including a connector base, a positive probe, and a negative probe, wherein the positive probe and the negative probe are both mounted on the connector base; A tray for carrying a secondary battery, the secondary battery including a positive electrode and a negative electrode; A driving device for driving the connector base and the tray to approach each other, so that the positive probe contacts the positive electrode and the negative probe contacts the negative electrode; the driving device is further used to drive the connector base and the tray to move away from each other, so that the positive probe separates from the positive electrode and the negative probe separates from the negative electrode; A control device for adjusting the output force of the driving device to adjust the interaction force when the positive probe contacts the positive electrode and the interaction force when the negative probe contacts the negative electrode.

2. The formation and formation capacity testing device according to claim 1, wherein The driving device includes an electric cylinder, and the control device includes a first controller for controlling the output force of the electric cylinder.

3. The formation and formation capacity testing device according to claim 2, wherein The first controller includes a programmable logic controller.

4. The formation and formation capacity testing device according to claim 1, wherein The driving device includes a power cylinder, and the control device includes a second controller and a proportional valve; the proportional valve is used to introduce fluid into the power cylinder to drive the connector base and the tray to approach each other; the second controller is used to adjust the output pressure of the proportional valve.

5. The formation and formation capacity testing device according to claim 4, characterized in that, The power cylinder includes a pneumatic cylinder, and the proportional valve includes a pneumatic proportional valve; or, the power cylinder includes a hydraulic cylinder, and the proportional valve includes an electro-hydraulic proportional valve.

6. The formation and formation capacity testing device according to claim 4, wherein The control device further includes: A pressure detection component for detecting the output pressure of the proportional valve to generate a feedback signal; the second controller is used to receive the feedback signal, and the second controller is further used to send a control signal according to the feedback signal; the proportional valve is used to receive the control signal to adjust the output pressure.

7. The formation and grading equipment according to claim 6, characterized in that, The pressure detection component includes one of a pressure gauge, a pressure sensor, and a differential pressure sensor.

8. The formation and grading equipment according to any one of claims 1 to 7, characterized in that Assume that one positive probe and one negative probe form a probe group, and there are multiple such probe groups.

9. The formation and formation capacity testing device according to claim 8, characterized in that, The multiple probe groups are arranged in an array.

10. The formation and grading equipment according to any one of claims 1 to 7, characterized in that, The connector base is slidably connected to the tray.

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