Battery cell polarity detection system

Abstract

The utility model relates to a battery cell polarity detection system, which comprises a detection module and a control module, and is characterized in that the detection module is used for acquiring detection data of a to-be-detected battery cell when the to-be-detected battery cell is located at a target position; and the control module is connected with the detection module and is used for determining the polarity of the to-be-detected battery cell according to the detection data. By adopting the cell polarity detection system, polarity detection can be carried out on the to-be-detected cell without expensive equipment, the cell polarity detection system does not depend on a detection environment, cell polarity detection can be carried out on to-be-detected cells of different specifications and models, and the universality and reliability of cell polarity detection can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power batteries, in particular to a battery cell polarity detection system. BACKGROUND

[0002] Power batteries are the core components of modern electric vehicles and energy storage systems, which are used to provide stable power supply for various devices and achieve efficient energy conversion and storage. A power battery is composed of multiple battery cells, and multiple battery cells are connected in series or parallel to build a power supply system that meets specific capacity and voltage requirements. The performance of the battery directly affects the running efficiency, safety and service life of the device, therefore, it is particularly important to optimize the production process and detection means of the power battery.

[0003] In the production process of power batteries, battery cell stacking is a crucial step. In order to avoid problems such as short circuit, damage or performance degradation of power batteries caused by incorrect polarity of battery cells during battery cell stacking, the polarity direction of the battery cells needs to be detected before stacking to ensure the accuracy of the polarity direction.

[0004] In the traditional technology, the polarity direction of the battery cells is detected by using Charge-Coupled Device (CCD) photographing technology, that is, CCD imaging technology generates images by capturing light and converting it into electrical signals to identify the polarity of the battery cells.

[0005] However, CCD imaging technology requires high-cost equipment, and CCD technology is highly dependent on the detection environment, so the stability and adaptability of CCD imaging technology in different environments are limited. CONTENT OF THE UTILITY MODEL

[0006] Therefore, it is necessary to provide a battery cell polarity detection system that is low in cost and can adapt to different specifications and models of battery cells in view of the above technical problems.

[0007] The present application provides a battery cell polarity detection system, comprising:

[0008] a detection module for obtaining detection data of a battery cell to be tested when the battery cell to be tested is in a target position; and

[0009] a control module connected with the detection module, for determining the polarity of the battery cell to be tested according to the detection data.

[0010] In one embodiment, the detection module includes a plurality of detection units, and each detection unit includes:

[0011] a relay, a first end of the relay being connected with the control module, and a second end of the relay being connected with the probe unit;

[0012] The probe unit comprises a first probe and a second probe, and the first probe and the second probe are connected with the positive and negative poles of the battery to be tested respectively.

[0013] In one of the embodiments, the relay comprises a coil and a switch, the first end of the coil is connected with the first probe, the second end of the coil is connected with the second probe, and the switch is used to connect the power supply unit.

[0014] In one of the embodiments, the system further comprises:

[0015] The sensing module is connected with the control module and is used to transmit the position information of the battery to be tested to the control module.

[0016] In one of the embodiments, the sensing module comprises:

[0017] The first sensing module is used to detect the first directional distance between the probe unit and the battery to be tested.

[0018] The second sensing module is used to detect the second directional distance between the probe unit and the battery to be tested.

[0019] In one of the embodiments, the system further comprises:

[0020] The conveying module is connected with the control module and is used to convey the battery to be tested to the target position, and the control module controls the conveying module according to the position information of the battery to be tested.

[0021] In one of the embodiments, the system further comprises a driving module, the first end of the driving module is connected with the control module, and the second end of the driving module is connected with the detection module, and the driving module is used to drive the detection module to connect with the battery to be tested.

[0022] In one of the embodiments, the driving module comprises a first driving member and a second driving member, and the first driving member and the second driving member are used to adjust the position of the detection module.

[0023] In one of the embodiments, the first driving member comprises a first electromagnetic valve, and the second driving member comprises a second electromagnetic valve, and the first electromagnetic valve and the second electromagnetic valve are connected with the control module and are used to receive the control instruction of the control module to control the first driving member and the second driving member.

[0024] In one of the embodiments, the system further comprises:

[0025] The alarm module is connected with the control module and is used to send an alarm signal, and the control module controls the alarm module according to the detection data.

[0026] The above-mentioned battery polarity detection system comprises a detection module configured to acquire detection data of a battery under test when the battery under test is in a target position; and a control module connected with the detection module and configured to determine the polarity of the battery under test according to the detection data. The battery polarity detection system can detect the polarity of the battery under test without high-cost equipment, and is independent of the detection environment, and can detect the polarity of batteries under test of different specifications and models, thereby improving the versatility and reliability of battery polarity detection. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0028] Figure 1 FIG. 1 is a structural schematic diagram of a battery polarity detection system in an embodiment;

[0029] Figure 2 FIG. 2 is a circuit schematic diagram of the battery polarity detection system in an embodiment;

[0030] Figure 3 FIG. 3 is another structural schematic diagram of the battery polarity detection system in an embodiment;

[0031] Figure 4 FIG. 4 is a circuit schematic diagram of a first electromagnetic valve and a second electromagnetic valve in an embodiment;

[0032] Figure 5 FIG. 5 is a connection structural schematic diagram of an alarm module in an embodiment.

[0033] 10, battery polarity detection system; 100, detection module; 200, control module; 300, sensing module; 500, alarm module; 102, relay; 104, probe unit; 1022, switch piece; 1024, coil; 1042, first probe; 1044, second probe; 402, first electromagnetic valve; 404, second electromagnetic valve. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0039] It is to be understood that when an element as a preamble is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not meant to be limiting.

[0040] Referring to Figure 1 , Figure 1 The structure of the battery cell polarity detection system 10 in the embodiment of the utility model is shown, the utility model embodiment provides battery cell polarity detection system 10, including detection module 100 and control module 200, detection module 100 is used to obtain the detection data of the battery cell to be measured when the battery cell to be measured is in target position. Control module 200 is connected with detection module 100, and is used to determine the polarity of the battery cell to be measured according to the detection data.

[0041] Wherein, the battery cell to be measured refers to the battery cell needing polarity detection in the process of battery cell stacking, and the battery cell can be any type of battery unit, such as lithium ion battery, nickel hydrogen battery, etc. The target position refers to the position of the detection module 100. The detection data of the battery cell to be measured can include voltage data, current data, state of charge, time stamp, etc.

[0042] When the battery cell to be measured reaches the specified target position, the detection module 100 obtains the detection data of the battery cell to be measured, and transmits the obtained detection data to the control module 200. Exemplarily, the battery cell polarity detection system 10 can monitor the position of the battery cell to be measured in real time through the positioning sensor to determine the battery cell to be measured reaching the position of the detection module 100, so that the detection module 100 can obtain the detection data of the battery cell to be measured in the target position.

[0043] The control module 200 is connected with the detection module 100, used for receiving the detection data of the to-be-tested battery cell transmitted by the detection module 100, and analyzing the detection data, and then determining the polarity of the to-be-tested battery cell. Optionally, the control module 200 can determine the positive and negative polarity of the battery cell according to the preset logic and the detection data of the to-be-tested battery cell. For example, if the signal of the detection data is consistent with the preset value, it indicates that the polarity of the to-be-tested battery cell is normal; if the signal of the detection data is inconsistent with the preset value, it indicates that the polarity of the to-be-tested battery cell is wrong. The control module 200 can be connected with a display terminal, used for transmitting the polarity detection result of the to-be-tested battery cell to the display terminal, which can store the polarity detection result and is convenient for the operator to check. If the polarity of the to-be-tested battery cell is normal, it is allowed to continue to enter the subsequent stacking process; if the polarity of the to-be-tested battery cell is abnormal, the display terminal can issue an alarm signal to prompt the operator to intervene. The control module 200 can be a programmable logic controller (PLC), a real-time operating system (RTOS) controller, an embedded controller, etc.

[0044] In the embodiment, when the to-be-tested battery cell is at the target position, the detection module 100 acquires the detection data of the to-be-tested battery cell. By determining the position of the to-be-tested battery cell, the accuracy of the detection data of the to-be-tested battery cell can be ensured, and the reliability of the polarity detection of the to-be-tested battery cell is improved. The control module 200 determines the polarity of the to-be-tested battery cell according to the detection data, which can effectively reduce the probability of polarity detection failure caused by human error, significantly improve the efficiency and accuracy of the polarity detection of the to-be-tested battery cell, and improve the overall quality and reliability of the power battery product.

[0045] In one exemplary embodiment, the battery cell polarity detection system 10 further comprises a sensing module 300 connected with the control module 200, used for transmitting the position information of the to-be-tested battery cell to the control module 200.

[0046] Exemplarily, Figure 2 The circuit schematic diagram of the battery cell polarity detection system 10 further comprises a sensing module 300, which can be arranged near the to-be-tested battery cell and can quickly acquire the real-time position information of the to-be-tested battery cell. After acquiring the real-time position information of the to-be-tested battery cell, the sensing module 300 transmits the position information to the control module 200. When the control module 200 determines that the to-be-tested battery cell reaches the specified target position according to the position information, the detection module 100 acquires the detection data of the to-be-tested battery cell.

[0047] In this embodiment, the real-time position information of the to-be-tested battery cell is acquired by the sensing module 300, so that the to-be-tested battery cell can be ensured to be in the target position during the polarity detection, and the accuracy of the battery cell polarity detection is improved. Meanwhile, the real-time position of the to-be-tested battery cell is detected, so that the inaccuracy of the detection result caused by the displacement of the to-be-tested battery cell during the polarity detection is avoided, and the reliability of the battery cell polarity detection is improved.

[0048] In an exemplary embodiment, the battery cell polarity detection system 10 further comprises a driving module, a first end of the driving module being connected with the control module 200, and a second end of the driving module being connected with the detection module 100, for driving the detection module 100 to be connected with the to-be-tested battery cell.

[0049] The first end of the driving module is connected with the control module 200, for receiving the driving instruction transmitted by the control module 200. The second end of the driving module is connected with the detection module 100, for adjusting the position of the detection module 100 according to the driving instruction transmitted by the control module 200. The driving module can include a driving cylinder, a motor driver, etc.

[0050] For example, the control module 200 determines whether the to-be-tested battery cell reaches the specified target position according to the real-time position information of the to-be-tested battery cell transmitted by the sensing module 300. When the control module 200 determines that the to-be-tested battery cell reaches the specified target position, the control module 200 generates a corresponding driving instruction and sends it to the driving module. The driving module receives the driving instruction and drives the detection module 100, so that the detection module 100 can be accurately connected with the to-be-tested battery cell. After the detection module 100 is connected with the to-be-tested battery cell, the detection data of the to-be-tested battery cell is acquired and transmitted to the control module 200.

[0051] In this embodiment, the driving module adjusts the position of the detection module 100 according to the driving instruction of the control module 200, so that the accurate connection between the detection module 100 and the to-be-tested battery cell is ensured, and the efficiency of the battery cell polarity detection is improved. Meanwhile, the detection module 100 can be adjusted according to different specifications and models of to-be-tested battery cells, so that the universality of the battery cell polarity detection is improved.

[0052] In an exemplary embodiment, the detection module 100 comprises a plurality of detection units, and each detection unit comprises a relay 102, a first end of the relay 102 being connected with the control module 200, and a second end of the relay 102 being connected with a probe unit 104. The probe unit 104 comprises a first probe 1042 and a second probe 1044, and the first probe 1042 and the second probe 1044 are respectively connected with the positive and negative poles of the to-be-tested battery cell.

[0053] Optionally, the first end of the relay 102 of the detection unit is connected with the control module 200, which can be used to receive the signal instruction transmitted by the control module 200, and the relay 102 determines whether the probe unit 104 needs to be connected with the to-be-detected battery based on the signal instruction. The first end of the relay 102 is also connected with the control module 200 to transmit a signal to the control module 200. In the detection unit, the number of relays 102 can be set according to actual conditions. The probe unit 104 is composed of a first probe 1042 and a second probe 1044, which are used to be connected with the positive and negative poles of the to-be-detected battery. The materials of the first probe 1042 and the second probe 1044 can be high-conductivity materials to ensure the stability and accuracy of signal transmission.

[0054] For example, when the control module 200 sends a first signal instruction to the relay 102, the relay 102 will set a closed state according to the signal instruction, so that the probe unit 104 is connected with the to-be-detected battery to obtain detection data of the to-be-detected battery. The control module 200 judges the polarity state of the to-be-detected battery according to the detection data collected by the probe unit 104. If the control module 200 detects that the polarity of the to-be-detected battery is correct, the terminal displays “normal polarity”. If the control module 200 detects that the to-be-detected battery has a polarity abnormality, a short circuit or other abnormal conditions, the control module 200 sends a second signal instruction to the relay 102 to cut off the power supply and protect the safety of the to-be-detected battery.

[0055] In the above example embodiment, the relay 102 includes a coil 1024 and a switching piece 1022. The first end of the coil 1024 is connected with the first probe 1042, and the second end of the coil 1024 is connected with the second probe 1044. The switching piece 1022 is used to connect the power supply unit.

[0056] For example, the relay 102 includes a coil 1024 and a switching piece 1022. The first end of the coil 1024 is connected with the first probe 1042, and the second end of the coil 1024 is connected with the second probe 1044. The first probe 1042 and the second probe 1044 are used to be connected with the positive and negative poles of the to-be-detected battery. The switching piece 1022 of the relay is connected with the power supply unit to form a closed current loop. When the relay 102 is turned on, the current will flow from the power supply unit to the first probe 1042 and the second probe 1044, and then the to-be-detected battery is measured to obtain the detection data of the to-be-detected battery. The power supply unit is a power supply for providing stable power supply for the system to ensure the normal operation of the system, that is, the two ends of the switching piece 1022 of the relay are connected to the positive and negative poles of the power supply. The power supply unit can support multiple input voltages to adapt to different power supply requirements.

[0057] Optionally, please refer to Figure 1 The first end of the relay 102 is connected with the control module 200, which can be the node on the first end of the coil 1024 of the relay or the second end of the coil 1024 connected with the control module 200. As shown in Figure 3 Another structural schematic diagram of the battery cell polarity detection system 10 is shown, in which the first end of the relay 102 is connected with the control module 200, which can be the node on the switch piece 1022 of the relay connected with the control module 200. The relay 102 is connected with the control module 200, which can realize accurate control of each relay 102 and improve the efficiency of battery cell detection.

[0058] In this embodiment, the relay 102 is connected with the control module 200 and the probe unit 104, which can enable the control module 200 to accurately control each relay 102 and improve the safety and reliability of battery detection.

[0059] In an exemplary embodiment, the sensing module 300 includes a first sensing module and a second sensing module, the first sensing module is used for detecting the first direction distance between the probe unit 104 and the battery cell to be detected, and the second sensing module is used for detecting the second direction distance between the probe unit 104 and the battery cell to be detected.

[0060] Optionally, the first sensing module used for detecting the first direction distance between the probe unit 104 and the battery cell pole can be the position information in the horizontal direction, and the second sensing module used for detecting the second direction distance between the probe unit 104 and the battery cell pole can be the position information in the vertical direction. The first sensing module and the second sensing module are both connected with the control module 200, and are used for transmitting the position information between the probe unit 104 and the battery cell to be detected to the control module 200 in real time.

[0061] When the battery cell polarity detection system 10 detects the polarity of the battery cell to be detected, the first sensing module and the second sensing module simultaneously detect the position information between the probe unit 104 and the battery cell to be detected, which is used to ensure the alignment of the probe unit 104 and the battery cell pole in the horizontal direction and the vertical direction. The first sensing module and the second sensing module can be laser sensors, ultrasonic sensors, displacement sensors, etc. After the control module 200 receives the position signal transmitted by the first sensing module and the second sensing module, the position signal is analyzed to determine whether the battery cell to be detected has accurately reached the target position. If the control module 200 determines that the battery cell to be detected has accurately reached the target position, a control signal is sent to the driving module, so that the driving module can drive the detection module 100 to connect with the battery cell to be detected.

[0062] In this embodiment, the first sensing module and the second sensing module are used to detect the position information between the probe unit 104 and the to-be-tested battery cell, so that the to-be-tested battery cell can reach the target position, the probe unit 104 can accurately abut against the to-be-tested battery cell, and the accuracy of the battery cell polarity detection can be improved.

[0063] In an exemplary embodiment, the system further comprises a driving module, a first end of the driving module being connected with the control module 200, and a second end of the driving module being connected with the detection module 100, for driving the detection module 100 to connect with the to-be-tested battery cell.

[0064] The first end of the driving module is connected with the control module 200, and the second end of the driving module is connected with the detection module 100, so that the detection module 100 can accurately abut against the to-be-tested battery cell. For example, the first end of the driving module is connected with the control module 200, for receiving the driving instructions from the control module 200, so as to ensure the accuracy and coordination of the driving action. The second end of the driving module is connected with the detection module 100, for converting the driving instructions of the control module 200 into actual mechanical actions, driving the detection module 100, and adjusting the position of the detection module 100. The driving module can be an electric motor or a pneumatic device.

[0065] In the above exemplary embodiment, the driving module comprises a first driving member and a second driving member, and the first driving member and the second driving member are used to adjust the position of the detection module 100.

[0066] Optionally, the first driving member can be a horizontal driving member, and the second driving member can be a vertical driving member. The first driving member and the second driving member are connected with the control module 200, for receiving the driving instructions from the control module 200. Specifically, the control module 200 outputs corresponding driving instructions to the first driving member according to the position information between the probe unit 104 and the to-be-tested battery cell pole in the horizontal direction transmitted by the first sensing module, so as to adjust the position of the detection module 100 in the horizontal direction. The control module 200 outputs corresponding driving instructions to the second driving member according to the position information between the probe unit 104 and the to-be-tested battery cell pole in the vertical direction transmitted by the second sensing module, so as to adjust the position of the detection module 100 in the vertical direction. According to the first driving member and the second driving member, the relative position between the detection module 100 and the to-be-tested battery cell can be adjusted, so that the detection module 100 can accurately abut against the to-be-tested battery cell, and the accuracy and reliability of the polarity detection can be ensured.

[0067] In this embodiment, the driving module adjusts the position of the detection module 100 according to the driving instruction, which can further ensure the accurate abutment between the detection module 100 and the to-be-detected battery cell, and improve the accuracy of the battery cell polarity detection. Meanwhile, the driving module and the control module 200 are used to automatically adjust the position of the detection module 100, which can improve the flexibility and efficiency of the battery cell polarity detection.

[0068] In an exemplary embodiment, the first driving member includes a first electromagnetic valve 402, and the second driving member includes a second electromagnetic valve 404; the first electromagnetic valve 402 and the second electromagnetic valve 404 are connected with the control module 200, and are used to receive the control instruction sent by the control module 200 to control the first driving member and the second driving member.

[0069] For example, as shown in FIG. 4, the first driving member includes a first electromagnetic valve 402, and the second driving member includes a second electromagnetic valve 404. Figure 4 FIG. 4 shows a circuit schematic diagram of the first electromagnetic valve 402 and the second electromagnetic valve 404. The first electromagnetic valve 402 and the second electromagnetic valve 404 are connected with the control module 200, and are used to receive the control instruction sent by the control module 200. When the control module 200 determines that the position of the detection module 100 needs to be adjusted according to the position information transmitted by the first sensing module and the second sensing module, the control module 200 sends the control instruction to the first electromagnetic valve 402 and the second electromagnetic valve 404.

[0070] The control module 200 sends the control instruction to the first electromagnetic valve 402, which can adjust the position of the detection module 100 in the horizontal direction. Specifically, the control module 200 can send multiple control instructions to the first electromagnetic valve 402. For example, when the control module 200 sends a first control instruction to the first electromagnetic valve 402, the first electromagnetic valve 402 can close the first end thereof, so that the first driving member drives the detection module 100 to move along the horizontal direction towards the position of the to-be-detected battery cell; when the control module 200 sends a second control instruction to the first electromagnetic valve 402, the first electromagnetic valve 402 can close the second end thereof, so that the first driving member drives the detection module 100 to move along the horizontal direction away from the to-be-detected battery cell. The control module 200 sends the control instruction to the second electromagnetic valve 404, which can adjust the position of the detection module 100 in the vertical direction. Specifically, the control module 200 can send multiple control instructions to the second electromagnetic valve 404. For example, when the control module 200 sends an upward instruction to the second electromagnetic valve 404, the second electromagnetic valve 404 can close the first end thereof, so that the second driving member drives the detection module 100 to move upward along the vertical direction, i.e., to move along the vertical direction towards the position of the to-be-detected battery cell; when the control module 200 sends a downward instruction to the second electromagnetic valve 404, the second electromagnetic valve 404 can close the second end thereof, so that the second driving member drives the detection module 100 to move downward along the vertical direction, i.e., to move along the vertical direction away from the to-be-detected battery cell.

[0071] When the polarity detection of the battery under test is not required, the control module 200 can send control instructions to the first electromagnetic valve 402 and the second electromagnetic valve 404 to drive the detection module 100 to reset, thereby reducing the space occupation of the battery polarity detection system 10 and avoiding interference between the battery polarity detection system 10 and other devices.

[0072] In this embodiment, the first electromagnetic valve 402 and the second electromagnetic valve 404 receive control instructions from the control module 200 to adjust the position of the battery under test in multiple directions, thereby improving the applicability and detection efficiency of the battery polarity detection, and meeting the requirements of different specifications and models of the battery under test.

[0073] In an exemplary embodiment, the battery polarity detection system 10 further comprises a conveying module connected with the control module 200 for conveying the battery under test to a target position; wherein the control module 200 controls the conveying module according to the position information of the battery under test.

[0074] For example, the conveying module is connected with the control module 200 for receiving control instructions from the control module 200. The conveying module is also used to carry and transport the battery under test. When the control module 200 sends control instructions to control the conveying module to start, the conveying module transports the battery under test located on the conveying module. At this time, the sensing module 300 monitors the position information of the battery under test located on the conveying module in real time and transmits the monitored position information of the detection module 100 to the control module 200. When the control module 200 determines that the battery under test is at the target position according to the position information, the control module 200 sends control instructions to the conveying module to control the conveying module to stop moving, thereby ensuring that the battery under test is at the position of the detection module 100 and ensuring the precise abutment of the battery under test and the detection module 100.

[0075] When the detection of the battery under test located on the conveying module is completed, the control module 200 determines whether the polarity detection result of the battery under test is abnormal according to the detection data transmitted by the detection module 100. When the polarity detection result of the battery under test is not abnormal, the control module 200 sends control instructions to the conveying module to control the conveying module to start again, thereby avoiding safety problems caused by polarity errors during the stacking of batteries.

[0076] In this embodiment, the conveying module transports the battery under test and is connected with the control module 200, thereby ensuring the precise abutment of the battery under test and the detection module 100 and improving the accuracy of the polarity detection of the battery under test. At the same time, after ensuring that the polarity detection result of the battery under test is not abnormal, the battery under test is conveyed to the next process, thereby ensuring the reliability and safety of the subsequent stacking of batteries.

[0077] In an exemplary embodiment, as shown in FIG. 5, a structure diagram of the alarm module 500 is provided, and the alarm module 500 is connected with the control module 200. Figure 5

[0078] The battery cell polarity detection system 10 further comprises an alarm module 500 connected with the control module 200, for sending an alarm signal; wherein the control module 200 controls the alarm module 500 according to the detection data.

[0079] The alarm module 500 is connected with the control module 200, and the control module 200 controls the alarm module 500 to send an alarm signal according to the on-off signal and identity information of each relay 102. For example, when the first probe 1042 and the second probe 1044 are connected with the positive pole and the negative pole of the battery cell to be detected respectively, the coil 1024 of the relay is powered on, and the corresponding relay switch 1022 is closed. At this time, the control module 200 obtains the closing signal by monitoring the on-off signal of each relay 102 in real time, determines that the polarity of the battery cell to be detected is normal, and determines that the positive and negative poles of the battery cell to be detected are correct. When the first probe 1042 and the second probe 1044 are connected with the negative pole and the positive pole of the battery cell to be detected respectively, the coil 1024 of the relay loses power, and the corresponding relay switch 1022 is opened. The control module 200 obtains the opening signal and determines that the polarity of the battery cell to be detected is abnormal. At this time, the control module 200 sends a control signal to the alarm module 500, so that the alarm module 500 sends an alarm signal. The alarm module 500 can remind the operator to check by means of sound and light alarm, indicator light or display screen, etc. The alarm module 500 can also include a recording function. Whenever the alarm module 500 triggers an alarm signal, the alarm module 500 can record the specific alarm time, alarm type and triggering reason.

[0080] In this embodiment, the alarm module 500 is connected with the control module 200, and the control module 200 controls the alarm module 500 according to the on-off information of the relay 102, so that the battery cell polarity detection system 10 can timely determine the polarity of the battery cell to be detected and alarm, effectively improving the reliability of the battery cell detection, and ensuring the safety of the power battery.

[0081] In an exemplary embodiment, when the control module 200 determines that the polarity of the battery cell to be detected is abnormal, the control module 200 sends a detection instruction to the detection module 100 again, so that the detection module 100 performs secondary detection on the battery cell to be detected, which can avoid the situation of polarity misjudgment caused by poor contact of the probe unit 104 and other factors, and improve the reliability and accuracy of the battery cell polarity detection.

[0082] In another embodiment, a battery cell polarity detection system 10 is provided, comprising:​

[0083] The conveying module is connected with the control module 200, and is used to convey the battery to be tested to a target position; wherein the control module 200 controls the conveying module according to the position information of the battery to be tested.

[0084] The sensing module 300 is connected with the control module 200, and is used to transmit the position information of the battery to be tested to the control module 200.

[0085] The driving module, a first end of the driving module being connected with the control module 200, a second end of the driving module being connected with the detection module 100, is used to receive the control instruction of the control module 200, and drive the detection module 100 to connect with the battery to be tested.

[0086] The detection module 100 is used to acquire detection data of the battery to be tested when the battery to be tested is at the target position.

[0087] The control module 200 is connected with the detection module 100, and is used to determine the polarity of the battery to be tested according to the detection data.

[0088] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that the combinations are within the scope of the present application.

[0089] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A cell polarity detection system, characterized by, The system comprises: a detection module, configured to acquire detection data of a to-be-tested battery cell when the to-be-tested battery cell is at a target position; and a control module, connected to the detection module, configured to determine polarity of the to-be-tested battery cell according to the detection data.

2. The system of claim 1, wherein, The detection module comprises a plurality of detection units, and each detection unit comprises: a relay, a first end of the relay being connected to the control module, and a second end of the relay being connected to a probe unit; the probe unit comprising a first probe and a second probe, the first probe and the second probe being connected to positive and negative poles of the to-be-tested battery cell respectively.

3. The system of claim 2, wherein, The relay comprises a coil and a switch piece, a first end of the coil being connected to the first probe, and a second end of the coil being connected to the second probe; the switch piece is configured to connect a power supply unit.

4. The system of claim 2, wherein, The system further comprises: a sensing module, connected to the control module, configured to transmit position information of the to-be-tested battery cell to the control module.

5. The system of claim 4, wherein, The sensing module comprises: a first sensing module, configured to detect a first directional distance between the probe unit and the to-be-tested battery cell; a second sensing module, configured to detect a second directional distance between the probe unit and the to-be-tested battery cell.

6. The system of claim 4, wherein, The system further comprises: a conveying module, connected to the control module, configured to convey the to-be-tested battery cell to the target position; wherein the control module controls the conveying module according to the position information of the to-be-tested battery cell.

7. The system of claim 1, wherein, The system further comprises a driving module, a first end of the driving module being connected to the control module, and a second end of the driving module being connected to the detection module, configured to drive the detection module to connect to the to-be-tested battery cell.

8. The system of claim 7, wherein, The driving module comprises a first driving piece and a second driving piece, the first driving piece and the second driving piece being configured to adjust a position of the detection module.

9. The system of claim 8, wherein, The first driving piece comprises a first electromagnetic valve, and the second driving piece comprises a second electromagnetic valve; the first electromagnetic valve and the second electromagnetic valve are both connected to the control module, configured to receive a control instruction of the control module and control the first driving piece and the second driving piece.

10. The system of claim 1, wherein, The system further comprises: an alarm module, connected to the control module, configured to send an alarm signal; wherein the control module controls the alarm module according to the detection data.

Images