Inspection system using pressure distribution measurement of secondary battery

Abstract

The present invention relates to an inspection system using pressure distribution measurement of a secondary battery and, more specifically, to an inspection system using pressure distribution measurement of a secondary battery, the system having, arranged on one side of a pressure distribution measurement sensor, a connector board for the pressure distribution measurement sensor, thereby improving data processing speed, increasing user convenience, and reducing costs required for constructing the entire system.

Description

Inspection system using pressure distribution measurement of secondary batteries

[0001] The present invention relates to an inspection system through pressure distribution measurement of a secondary battery, and more specifically, to an inspection system through pressure distribution measurement of a secondary battery that enables improved data processing speed, enhanced user convenience, and reduced costs for constructing the entire system by placing a dedicated connector board for the pressure distribution measurement sensor on one side of the pressure distribution measurement sensor.

[0002] With the recent full-scale development of electric vehicles, energy storage batteries, robots, and satellites, research on rechargeable batteries—high-performance batteries capable of repeated charging and discharging—is actively underway. Currently commercialized rechargeable batteries include nickel-cadmium, nickel-hydrogen, nickel-zinc, and lithium-ion batteries. Among these, lithium-ion batteries are gaining attention for their advantages, such as the ability to freely charge and discharge with almost no memory effect compared to nickel-based batteries, a very low self-discharge rate, and high energy density.

[0003] These secondary batteries are manufactured in various forms depending on the shape of the case housing the electrode assembly, with representative shapes including cylindrical, prismatic, and pouch types. Generally, cylindrical secondary batteries use cylindrical aluminum cans, and prismatic secondary batteries use prismatic aluminum cans. Pouch-type secondary batteries consist of a thin aluminum laminate film made of materials such as aluminum sealed in a pack-shaped pouch; they have become widely used in recent years due to their relatively lightweight nature and excellent stability.

[0004] These various types of secondary batteries require a process to check for leakage during the manufacturing process. As a method to check for leakage in a secondary battery, in one embodiment, the secondary battery is placed inside a chamber, and swelling is induced on the outer surface of the secondary battery while adjusting the pressure within the chamber, and the pressure on the outer surface of the secondary battery is measured using a surface pressure sensor.

[0005]

[0006] Figure 1 is a conceptual diagram for explaining a surface pressure sensing system for secondary battery leak inspection. Below, the surface pressure sensing system for secondary battery leak inspection will be explained in detail with reference to Figure 1.

[0007]

[0008] Referring to FIG. 1, the surface pressure sensing system (9) may include a surface pressure sensor (910), a connector (930), a sensor controller (950), a control module (970), and a judgment module (990). The surface pressure sensor (910) includes a plurality of sensor nodes and is configured to measure pressure applied from the outer surface of a secondary battery (not shown) by being placed on one side of the secondary battery. Additionally, the connector (930) is configured to be electrically connected to the circuit line of the surface pressure sensor (910) and to transmit the output value of the surface pressure sensor (910) to the sensor controller (950). At this time, the connector (930) is configured to simply connect the surface pressure sensor (910) and the sensor controller (950) and does not perform any separate functions other than data input / output. And the sensor controller (950) is configured to convert the output value of the surface pressure sensor (910) transmitted from the connector (930) into Analog and Digital and transmit it to the control module (970). Additionally, the control module (970) can correct the pressure value (or output value) per sensor node transmitted from the sensor controller (950).

[0009] A surface pressure sensor (910) comprising multiple sensor nodes may have different output values ​​for each sensor node even when substantially the same force is applied from the outside. Therefore, if the output values ​​for each sensor node are used as is without correction during swelling of the secondary battery, a significant pressure measurement error may occur. Consequently, correction of the output values ​​for each sensor node is required and can be performed by a control module (970). This control module (970) is a software component and is supplied by the manufacturer of the surface pressure sensor (910). The data output from the control module (970) can be transmitted to a judgment module (990), which is a software component of the manufacturer of the leak inspection equipment. Through this judgment module (990), it is possible to determine whether the secondary battery is leaking.

[0010] In this way, if the control module (970) supplied by the manufacturer of the surface pressure sensor (910) must be used, the manufacturer of the leak inspection equipment must manage the surface pressure sensor (910), the connector (930), the sensor controller (950), the control module (970), and the judgment module (990), so the number of management points for the user increases, and thus the efficiency of utilizing the surface pressure sensing system (9) is inevitably reduced. In addition, since the data output from the surface pressure sensor (910) must pass through the control module (970) in the middle, the overall processing speed of the data may be relatively reduced. Finally, the total construction cost of the inspection system (1) due to the mandatory use of the control module (970) is also inevitably higher.

[0011]

[0012] In order to solve the above problems, the inventors of the present invention present an inspection system (1) through the measurement of pressure distribution of a novel secondary battery, and details will be described below.

[0013] It was devised to solve the problems of the prior art mentioned above.

[0014]

[0015] The present invention aims to provide an inspection system for measuring the pressure distribution of a secondary battery, which enables improved data processing speed, enhanced user convenience, and reduced costs for building the entire system by placing a custom connector board dedicated to the pressure distribution measurement sensor on one side of the pressure distribution measurement sensor.

[0016] In addition, the present invention aims to provide an inspection system through pressure distribution measurement of a secondary battery, wherein the judgment module enables easy automatic history management of the changed pressure distribution measurement sensor even when the pressure distribution measurement sensor is changed, by providing a recognition module.

[0017] In addition, the present invention aims to provide an inspection system for measuring the pressure distribution of a secondary battery that is equipped with a calibration module, thereby eliminating the need to upload calibration information or files corresponding to the changed pressure distribution measurement sensor even when the pressure distribution measurement sensor is changed, thus preventing human error in advance while ensuring convenience in use.

[0018] In addition, the present invention aims to provide an inspection system for measuring the pressure distribution of a secondary battery that is equipped with an automatic node information recognition module, thereby eliminating the need to separately input sensor node information corresponding to the changed pressure distribution measurement sensor even when the pressure distribution measurement sensor is changed, thus preventing human error in advance and promoting convenience in use.

[0019] In addition, the present invention aims to provide an inspection system through pressure distribution measurement of a secondary battery that allows multiple controllers to be data-connected through a connector, thereby ensuring that there are no limitations on scalability when managing multiple pressure distribution measurement sensors in an integrated manner.

[0020] In order to achieve the above-described purpose, the present invention can be implemented by an embodiment having the following configuration.

[0021]

[0022] According to one embodiment of the present invention, an inspection system for measuring pressure distribution of a secondary battery according to the present invention is characterized by comprising: a pressure distribution measuring sensor including a surface pressure sensor having a plurality of sensor nodes that detects pressure applied from the outer surface of a secondary battery cell and outputs a pressure value; a connector board disposed on one side of the pressure distribution measuring sensor and electrically connected to receive the output value of the pressure distribution measuring sensor; a controller that converts analog data output from the connector board into digital data; and a judgment module that determines whether the secondary battery being inspected is a good product through data transmitted from the controller.

[0023] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention is characterized by including a recognition module that embeds unique ID information of a connected pressure distribution measurement sensor.

[0024] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention is characterized by including a calibration module having built-in calibration information of a connected pressure distribution measurement sensor and correcting the output value for each sensor node.

[0025] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention is characterized by including a node information automatic recognition module that automatically recognizes sensor node information of a connected pressure distribution measurement sensor.

[0026] According to another embodiment of the present invention, the sensor node information in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention is characterized by being information on the total number of sensor nodes forming a connected pressure distribution measurement sensor and / or array information of the sensor nodes.

[0027] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention further comprises a calibration module that has calibration information of a connected pressure distribution measurement sensor embedded therein and calibrates the output value for each sensor node.

[0028] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention further comprises a node information automatic recognition module that automatically recognizes sensor node information of a connected pressure distribution measurement sensor.

[0029] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention further comprises a node information automatic recognition module that automatically recognizes sensor node information of a connected pressure distribution measurement sensor.

[0030] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention further comprises a recognition module that embeds unique ID information of a connected pressure distribution measurement sensor.

[0031] According to another embodiment of the present invention, the controller in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention is configured to be communicationally connected with another controller and further comprises a communication board that transmits data collected from a plurality of controllers that are communicationally connected to each other to the judgment module.

[0032] According to another embodiment of the present invention, the pressure distribution sensing sensor in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention is characterized by comprising: a resistance part for each sensor node, the resistance value of which varies depending on the pressure applied from the outer surface of the secondary battery cell; a sensing line electrically connected to the individual resistance part; and a connection part where a plurality of sensing lines converge.

[0033] According to another embodiment of the present invention, the connector board in the inspection system for measuring the pressure distribution of a secondary battery according to the present invention is characterized in that it is arranged at a connection portion of the pressure distribution measurement sensor.

[0034] The present invention has the following effects through the above-mentioned configuration.

[0035]

[0036] The present invention has the effect of enabling improvement in data processing speed, enhancement of user convenience, and reduction in costs required for building the entire system by arranging a customized connector board exclusively for the pressure distribution measurement sensor on one side of the pressure distribution measurement sensor.

[0037] In addition, the present invention has the effect of enabling easy automatic history management of the pressure distribution measurement sensor whose judgment module has been changed even when the pressure distribution measurement sensor is changed by providing a recognition module.

[0038] In addition, the present invention has a calibration module, so that when the pressure distribution measurement sensor is changed, there is no need to upload calibration information or a file corresponding to the changed pressure distribution measurement sensor, thereby preventing human error in advance and promoting convenience in use.

[0039] In addition, by providing an automatic node information recognition module, the present invention eliminates the need to separately input sensor node information corresponding to the changed pressure distribution measurement sensor even when the pressure distribution measurement sensor is changed, thereby preventing human error in advance and promoting convenience in use.

[0040] In addition, the present invention enables multiple controllers to be data-connected via a connector, thereby providing the effect of ensuring that there are no limitations on scalability when managing multiple pressure distribution measurement sensors in an integrated manner.

[0041]

[0042] Meanwhile, it should be added that even if an effect is not explicitly mentioned here, the effects described in the following specification and the provisional effects expected by the technical features of the present invention are treated as described in the specification of the present invention.

[0043] FIG. 1 is a conceptual diagram illustrating an inspection system through pressure distribution measurement of a secondary battery;

[0044] FIG. 2 is a conceptual diagram of an inspection system through pressure distribution measurement of a secondary battery according to one embodiment of the present invention;

[0045] FIG. 3 is a block diagram of an inspection system through pressure distribution measurement of a secondary battery according to FIG. 2;

[0046] FIG. 4 is a reference diagram of a pressure distribution measurement sensor according to FIG. 2;

[0047] FIG. 5 is a block diagram of a connector board according to FIG. 2;

[0048] FIG. 6a is a reference diagram illustrating the limitations of the extended application of a conventional surface pressure sensing system for secondary battery leak inspection;

[0049] FIG. 6b is a reference diagram for explaining the extended application of an inspection system through pressure distribution measurement of a secondary battery according to one embodiment of the present invention.

[0050] Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. The embodiments of the present invention may be modified in various ways, and the scope of the present invention should not be construed as being limited to the embodiments described below, but rather should be interpreted based on the scope of the claims. Furthermore, these embodiments are provided for reference only to more fully explain the present invention to those of ordinary skill in the art.

[0051] As used herein, the singular form may include the plural form unless the context clearly indicates otherwise. Additionally, as used herein, “comprise” and / or “comprising” specify the presence of the mentioned features, numbers, steps, actions, parts, elements, and / or groups thereof, and do not exclude the presence or addition of one or more other features, numbers, actions, parts, elements, and / or groups.

[0052]

[0053] FIG. 2 is a conceptual diagram of an inspection system through pressure distribution measurement of a secondary battery according to one embodiment of the present invention; FIG. 3 is a block diagram of an inspection system through pressure distribution measurement of a secondary battery according to FIG. 2.

[0054]

[0055] Hereinafter, a system for inspecting a secondary battery by measuring its pressure distribution according to one embodiment of the present invention (1) will be described in detail with reference to the attached drawings.

[0056] The inspection system (1) for measuring the pressure distribution of a secondary battery according to one embodiment of the present invention may be for detecting swelling of the secondary battery cell during a leak inspection of the secondary battery cell, or for detecting swelling of the secondary battery cell during a charge / discharge inspection, and the scope of the present invention is not limited to a specific type of inspection method.

[0057] In addition, when performing a leak test of a secondary battery cell using the test system (1) through pressure distribution measurement of the secondary battery, the secondary battery to be tested may be a pouch-type secondary battery or a square secondary battery, and there is no separate limitation on the type of battery to which the test system (1) is applied.

[0058]

[0059] Referring to FIG. 2 and FIG. 3, the present invention relates to an inspection system (1) through pressure distribution measurement of a secondary battery, and more specifically, to an inspection system (1) through pressure distribution measurement of a secondary battery that enables improved data processing speed, enhanced user convenience, and reduced cost required to build the entire system by placing a connector board (30) dedicated to the pressure distribution measurement sensor on one side of the pressure distribution measurement sensor (10).

[0060] To this end, the inspection system (1) for measuring the pressure distribution of a secondary battery may include a pressure distribution measurement sensor (10), a connector board (30), a controller (50), and a judgment module (70).

[0061]

[0062] Figure 4 is a reference diagram of the pressure distribution measurement sensor according to Figure 2.

[0063]

[0064] Referring to FIGS. 2 to 4, the pressure distribution measuring sensor (10) may include a surface pressure sensor configuration that detects pressure applied from the outer surface of a secondary battery cell. For example, the pressure distribution measuring sensor (10) may include a film-type surface pressure sensor, and the surface pressure sensor may include n sensor nodes (N) (where n is a natural number greater than or equal to 2). For example, the surface pressure sensor may include approximately 800 sensor nodes (N), but the scope of the present invention is not limited by the above numerical range. By the pressure distribution measuring sensor (10) including a surface pressure sensor of such a structure, the sensor nodes (N) corresponding to each location can recognize the pressure value applied from the outer surface of the secondary battery cell.

[0065] To explain in detail regarding the pressure distribution measurement sensor (10) configured as a surface pressure sensor, the pressure distribution measurement sensor (10) may be configured to have a resistance section (110) for each sensor node (N). The resistance section (110) may be configured such that its resistance value varies depending on the pressure applied from the secondary battery cell. Additionally, a sensing line (130) may be connected to one side of the individual resistance section (110), and the sensing line (130) may be connected to multiple points of the individual resistance section (110). Under such a structure, current input from the sensing line (130) connected to one side of the individual resistance section (110) may be output through the resistance section (110) to the sensing line (130) connected to the other side of the individual resistance section (110). Accordingly, it is possible to specify the changed resistance value through the input / output current values ​​of the plurality of sensing lines (130) connected to the individual resistance section (110), and the pressure value for each sensor node (N) can be specified by the specified resistance value.

[0066] A plurality of sensing lines (130) may converge at the connection portion (150) of the pressure distribution measuring sensor (110). The connection portion (150) is configured to extend outward by a predetermined length from the sensing portion (10a) where a plurality of sensor nodes (N) of the pressure distribution measuring sensor (10) are located, and a pair of spaced-apart lines may be formed, but there are no specific limitations thereon.

[0067] In addition, the pressure distribution measuring sensor (10) may further include a different type of sensor(s) that detect pressure applied from the outer surface of the secondary battery cell in addition to the surface pressure sensor. For example, the pressure distribution measuring sensor (10) may further include a laser displacement sensor and / or a thickness measuring sensor, etc., in addition to the surface pressure sensor. By detecting the pressure applied from the outer surface of the secondary battery cell in a hybrid manner during leak inspection and / or charge / discharge inspection of the secondary battery cell using such different types of sensors, a more accurate inspection can be performed.

[0068]

[0069] Figure 5 is a block diagram of a connector board according to Figure 2.

[0070]

[0071] Referring to FIGS. 2 to 3 and FIG. 5, the connector board (30) is arranged on one side of the pressure distribution measurement sensor (10), preferably on the side of the connection portion (150) of the pressure distribution measurement sensor (10), and is configured to recognize the output value of the electrically connected pressure distribution measurement sensor (10) and perform calibration for each sensor node (N).

[0072] To this end, the connector board (30) may include a recognition module (310), a calibration module (330), and a node information automatic recognition module (350).

[0073] The recognition module (310) is a module that embeds unique ID information of a connected pressure distribution measurement sensor (10). As described above, a connector board (30) that is matched one-to-one with each individual pressure distribution measurement sensor (10) is arranged. Each individual connector board (30) is a configuration dedicated to any connected pressure distribution measurement sensor (10), and the recognition module (310) can embed unique ID information of a pressure distribution measurement sensor (10) connected to the connector board (30).

[0074] When the connector board (30) only performs a simple connector function for transmitting and receiving data between the pressure distribution measurement sensor (10) and the controller (50), the unique ID information of the connected pressure distribution measurement sensor (10) cannot be embedded. Therefore, there is a problem in that the history management of each pressure distribution measurement sensor (10) is impossible in the user terminal (T) equipped with the judgment module (70). To explain this in detail, when performing a secondary battery leak test or charge / discharge test, if the pressure distribution measurement sensor (10) previously used is changed to a new pressure distribution measurement sensor (10), continuous management of the history of each sensor may become difficult. In addition, in order to manage the history of each pressure distribution measurement sensor (10) by utilizing a general connector, the user must directly input the sensor unique ID information on the screen of the user terminal (T), which also has the possibility of human error.

[0075] On the other hand, according to one embodiment of the present invention, since the connector board (30) has a recognition module (310) that embeds unique ID information of the connected pressure distribution measurement sensor (10) beyond a simple connector function, there is an advantage in that relatively easy history management of the pressure distribution measurement sensor (10) is possible. Accordingly, even if the pressure distribution measurement sensor (10) is changed, the user terminal (T) equipped with the judgment module (70) can automatically recognize the changed information.

[0076] The calibration module (330) is a module that has calibration information or a file of a corresponding pressure distribution measurement sensor (10) embedded therein, and preferably has calibration information or a file of a sensor node (N) of the pressure distribution measurement sensor (10) embedded therein to calibrate the output value of each sensor node (N). At this time, the calibration information or file may calibrate the output value using different formulas for each pressure distribution measurement sensor (10) and / or each sensor node (N), but the scope of the present invention is not limited thereto.

[0077] As described above, the pressure distribution measuring sensor (10) including a plurality of sensor nodes may have different output values ​​for each sensor node (N) even when substantially the same force is applied from the outside. Therefore, if the output values ​​for each sensor node are used as is without correction during swelling of the secondary battery, a large error may occur in determining whether the secondary battery is a good product.

[0078] In addition, if the connector board (30) performs only a simple connector function for transmitting and receiving data between the pressure distribution measurement sensor (10) and the controller (50), the output value of the sensor node (N) cannot be corrected without the aforementioned control module (950; see FIG. 1). Furthermore, even if the output value of the sensor node (N) can be corrected through the control module (970), when performing a secondary battery leak test or a charge / discharge test, if the pressure distribution measurement sensor (10) used previously is changed to a new pressure distribution measurement sensor (10), correction information or a file corresponding to the new pressure distribution measurement sensor (10) must be newly uploaded to the terminal equipped with the control module (970). Since such correction information or file uploading must be performed every time the pressure distribution measurement sensor (10) is changed, the convenience of system utilization is reduced, and unexpected human error may occur because the user must perform the file upload directly.

[0079] On the other hand, according to one embodiment of the present invention, the connector board (30) is equipped with a calibration module (330) that embeds calibration information or a file corresponding to the connected pressure distribution measurement sensor (10) beyond a simple connector function, thereby enabling convenience in system utilization and eliminating the possibility of human error.

[0080] The node information automatic recognition module (350) is a module that automatically recognizes the sensor node (N) information of the pressure distribution measurement sensor (10) connected to the connector board (30). The term 'sensor node (N) information' above is understood to be information on the total number of sensor nodes (N) forming the connected pressure distribution measurement sensor (10) and / or array information of the sensor nodes (N).

[0081] When the connector board (30) performs only a simple connector function for transmitting and receiving data between the pressure distribution measurement sensor (10) and the controller (50), the sensor node (N) information of the connected pressure distribution measurement sensor (10) cannot be known, so the user has no choice but to directly input the sensor node (N) information to the terminal where the aforementioned control module (950; see FIG. 1) is executed. Therefore, when performing a secondary battery leak test or a charge / discharge test, if the pressure distribution measurement sensor (10) used previously is changed to a new pressure distribution measurement sensor (10), the sensor node information corresponding to the new pressure distribution measurement sensor (10) must be input to the control module (970).

[0082] Additionally, the number of sensor nodes (N) may vary for each sensor model of the pressure distribution measurement sensor (10), and the size of the secondary battery being tested may also vary, and the corresponding sensor model may be replaced. In this case, if the connector board (30) performs only a simple connector function, the sensor node (N) information may vary, so the sensor node information corresponding to the new pressure distribution measurement sensor (10) must be entered into the user terminal equipped with the control module (970).

[0083] Input of such sensor node information must be performed whenever the pressure distribution measurement sensor (10) is changed, and since the user must perform the input action directly, human error may occur.

[0084] On the other hand, according to one embodiment of the present invention, since the connector board (30) goes beyond a simple connector function and has a node information automatic recognition module (350) that embeds sensor node information corresponding to the connected pressure distribution measurement sensor (10), the sensor node information can be automatically recognized by a user terminal (T) equipped with a judgment module (70), and accordingly, there is no room for human error to occur.

[0085] By utilizing the connector board (30) having the recognition module (310), correction module (330), and node information automatic recognition module (350) described above, there is no need to utilize the control module (970) supplied by the surface pressure sensor manufacturer. Accordingly, while the existing surface pressure sensing system (9) is composed of a surface pressure sensor (910), a connector (930), a sensor controller (950), a control module (970), and a judgment module (990) and has five management points, the inspection system (1) through pressure distribution measurement of a secondary battery according to an embodiment of the present invention includes a pressure distribution measurement sensor (10), a connector board (30), a controller (50), and a judgment module (70), and thus has only four management points, so that the number of management points can be relatively small, thereby increasing convenience in utilizing the system. In addition, according to one embodiment of the present invention, the functions performed by the existing connector (930) and control module (970) can all be performed by a single connector board (30), thereby reducing the overall system construction cost and improving the data processing speed.

[0086]

[0087] Referring to FIGS. 2 and 3, the controller (50) is configured to convert data output from the connector board (30) into Analog-to-Digital and transmit it to the judgment module (70). The data transmitted from the controller (50) to the judgment module (70) may include one or more of the ID information of the pressure distribution measurement sensor (10), the output value corrected through the connector board (30), and the sensor node (N) information. The controller (50) may be connected to the connector board (30) via wired or wireless communication. Additionally, a connector (50a; see FIG. 6b) may be formed on one side of the controller (50), for example, on the side of the controller (50), so as to enable connection with another controller (50) and data transmission and reception, and details regarding this will be described later.

[0088]

[0089] The judgment module (70) is a module that determines whether the secondary battery being inspected is of good quality through data transmitted from the controller (50). This judgment module (70) can be executed on a user terminal (T) and can display information through the display unit of the user terminal (T). In addition, the judgment module (70) can be utilized during a leak inspection or a charge / discharge inspection of the secondary battery cell. This judgment module (70) can be connected to the controller (50) via wired or wireless communication.

[0090]

[0091] FIG. 6a is a reference diagram illustrating the limitations of the extended application of a conventional surface pressure sensing system for secondary battery leak inspection; FIG. 6b is a reference diagram illustrating the extended application of an inspection system through pressure distribution measurement of a secondary battery according to an embodiment of the present invention.

[0092]

[0093] Hereinafter, with reference to the attached drawings, the expanded application of the inspection system (1) through pressure distribution measurement of a secondary battery according to one embodiment of the present invention will be described in detail.

[0094]

[0095] Referring to Fig. 6a, when utilizing the existing surface pressure sensing system (9), individual surface pressure sensors (910) are connected one-to-one with a general-purpose connector (930). In addition, the individual connectors (930) can be connected to a sensor controller (950). In this case, when managing multiple surface pressure sensors (910) in an integrated manner, a multi-channel sensor controller (950) is required. For example, when managing two surface pressure sensors (910) in an integrated manner, a 2-channel sensor controller (950) is required. Therefore, in order to manage additional surface pressure sensors (910), a separate sensor controller (950), such as a 3-channel or 4-channel one, must be newly manufactured. In other words, the multi-channel sensor controller (950) cannot respond to changes in quantity beyond the initial manufacturing specifications.

[0096] On the other hand, referring to FIG. 6b, as described above, a connector (50a) may be formed in the controller (50) according to one embodiment of the present invention. That is, the connector (50a) may be formed on one side of the controller (50), for example, on the side of the controller (50), so as to enable connection and data transmission and reception with another controller (50). Accordingly, individual controllers (50) to which pressure distribution measurement sensors (10) for which integrated management is desired can be connected without being affected by the number of connected controllers, without being limited by the specifications of the existing sensor controller (950). Thereafter, data of multiple controllers (50) can be transmitted to the judgment module (70) through the communication board (C) built into the controller (50) or a separate communication board (C).

[0097] In the above example, it is described that a connector (50a) is formed in each individual controller (50), but it should be noted that multiple controllers (50) may be interconnected through any wired communication means, such as a cable (not shown), in addition to the connector (50a), or may be interconnected through any wireless communication means, such as Bluetooth, and there are no separate restrictions thereon.

[0098]

[0099] The detailed description above is illustrative of the present invention. Furthermore, the foregoing description illustrates preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. In other words, changes or modifications are possible within the scope of the inventive concepts disclosed herein, the scope equivalent to the written disclosure, and / or the scope of technology or knowledge in the art. The above-described embodiments illustrate the best possible state for implementing the technical idea of ​​the present invention, and various modifications required for specific application fields and uses of the present invention are also possible. Therefore, the detailed description of the invention above is not intended to limit the present invention to the disclosed embodiments.

Claims

1. A pressure distribution measuring sensor including a surface pressure sensor having a plurality of sensor nodes, which detects pressure applied from the outer surface of a secondary battery cell and outputs a pressure value; A connector board arranged on one side of the pressure distribution measurement sensor and electrically connected to receive the output value of the pressure distribution measurement sensor; A controller that converts analog data output from the connector board into digital data; and An inspection system through pressure distribution measurement of a secondary battery, characterized in that it includes a judgment module that determines whether a secondary battery under inspection is good or not through data transmitted from the controller.

2. In the first paragraph, the connector board An inspection system for measuring the pressure distribution of a secondary battery, characterized by including a recognition module that embeds unique ID information of a connected pressure distribution measurement sensor.

3. In the first paragraph, the connector board A test system for measuring the pressure distribution of a secondary battery, characterized by including a calibration module that corrects the output value of each sensor node by embedding calibration information of a connected pressure distribution measurement sensor.

4. In the first paragraph, the connector board An inspection system for measuring the pressure distribution of a secondary battery, characterized by including a node information automatic recognition module that automatically recognizes sensor node information of a connected pressure distribution measurement sensor.

5. In the fourth paragraph, the sensor node information An inspection system for measuring the pressure distribution of a secondary battery, characterized by information on the total number of sensor nodes forming a connected pressure distribution measurement sensor and / or information on the array of sensor nodes.

6. In the second paragraph, the connector board A test system for measuring the pressure distribution of a secondary battery, characterized in that it further includes a calibration module that has built-in calibration information of a connected pressure distribution measurement sensor and corrects the output value of each sensor node.

7. In the second paragraph, the connector board An inspection system for measuring the pressure distribution of a secondary battery, characterized in that it further includes a node information automatic recognition module that automatically recognizes sensor node information of a connected pressure distribution measurement sensor.

8. In the third paragraph, the connector board An inspection system for measuring the pressure distribution of a secondary battery, characterized in that it further includes a node information automatic recognition module that automatically recognizes sensor node information of a connected pressure distribution measurement sensor.

9. In paragraph 8, the connector board An inspection system for a secondary battery through pressure distribution measurement, characterized by further including a recognition module that embeds unique ID information of a connected pressure distribution measurement sensor.

10. In any one of paragraphs 2 through 9, the controller It is configured to communicate with other controllers, and An inspection system for measuring pressure distribution of a secondary battery, further comprising: a communication board that transmits data collected from a plurality of controllers connected to each other to the judgment module.

11. In any one of paragraphs 2 to 9, the pressure distribution sensing sensor A resistor portion for each sensor node, the resistance value of which varies depending on the pressure applied from the outer surface of the secondary battery cell; and A sensing line electrically connected to an individual resistor; and An inspection system for measuring the pressure distribution of a secondary battery, characterized by including a connection portion where multiple sensing lines converge.

12. In Clause 11, the connector board is An inspection system for measuring the pressure distribution of a secondary battery, characterized by being disposed at the connection part of the above-mentioned pressure distribution measuring sensor.

Images