Current detection device and method

Abstract

The present invention provides a current detection device and method, including a current detection tube with multiple detection channels, wherein the two ends of the current detection tube are respectively provided with multiple cable connection parts, and the cable connection parts can independently connect cables. The current detection tube includes a battery base and a battery cover plate, wherein the battery base is provided with a plurality of battery cells corresponding to the number of the cable connection parts, and the battery cover plate is provided with battery cell interfaces matching the number of the battery cells. The battery base and the battery cover plate can be spliced or disassembled. When the battery base and the battery cover plate are spliced, the battery cells and the battery cell interfaces are docked and electrically connected to form the current detection tube; the current detection tube can be sleeved with a current sensor for current detection. The present invention can expand the current provided by a small current source for detection by the current sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of current detection. Background Art

[0002] Conventional current sensor manufacturing requires testing its detection range, which necessitates a current supply within a certain range. This is particularly true for large current sensors, some of which may have a detection range of tens of thousands or even hundreds of thousands of amperes. Directly sourcing a current source capable of providing tens of thousands or hundreds of thousands of amperes would be prohibitively expensive, necessitating a cost-effective method for providing a high-capacity current source. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a current detection device and method, which can expand the current provided by a small current source for detection by a current sensor.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] The present invention first provides a current detection device, including a current detection tube with multiple detection channels, multiple cable connection parts are respectively provided at both ends of the current detection tube, and the cable connection parts can independently connect cables. The current detection tube includes a battery cell chassis and a battery cell cover plate, the battery cell chassis is provided with a plurality of battery cells corresponding to the number of the cable connection parts, and the battery cell cover plate is provided with battery cell interfaces matching the number of the battery cells. The battery cell chassis and the battery cell cover plate can be spliced or disassembled. When the battery cell chassis and the battery cell cover plate are spliced, the battery cells and the battery cell interfaces are docked and electrically connected to form the current detection tube; a current sensor can be mounted on the current detection tube for current detection.

[0006] Furthermore, it includes a first bracket for supporting the battery cell chassis and a second bracket for supporting the battery cell cover, the second bracket can move relative to the first bracket, so that the battery cell chassis and the battery cell cover can be combined or separated; the battery cell chassis is installed on the first bracket through the first base.

[0007] Furthermore, the cell cover is mounted on the second bracket via a second base.

[0008] Furthermore, the support structure also includes a third base for supporting the current sensor, and the third base is located below the battery cell.

[0009] Furthermore, the support structure further includes a slide rail, and the second bracket is mounted on the slide rail and can move closer to or away from the first bracket via the slide rail.

[0010] Furthermore, a first connection portion capable of connecting to an external wire is provided on the back of the battery cell chassis.

[0011] Furthermore, a second connection portion capable of connecting to an external wire is provided on the back of the battery cell cover.

[0012] Furthermore, the battery cell chassis is provided with an ejection structure, and the ejection structure can eject the battery cell cover in a direction away from the battery cell chassis.

[0013] Furthermore, the ejection structure includes a ejector rod, a ejector block and a handle. The handle is located at the rear of the battery cell chassis. One end of the ejector rod is connected to the handle, and the other end is connected to the ejector block through a return element. The ejector block is located between the battery cells. The ejector block is provided with a groove that matches the side shape of the battery cell, so that the ejector block can slide along the battery cell.

[0014] Based on the above current detection device, the present invention further provides a current detection method, which includes the following steps:

[0015] (1) Check whether the current detection tube is in the separated state. If not, you need to manually separate the battery cover and the battery chassis to leave enough space between the battery cover and the battery chassis for the current sensor to pass through;

[0016] (2) Place the current sensor on the battery cell through the gap between the battery cell cover and the battery cell chassis, and support it at the bottom of the current sensor through the support structure to ensure that the current sensor and the battery cell do not come into direct contact;

[0017] (3) Close the battery cover and battery chassis to form a state where the current sensor is mounted on the current detection tube and is ready for detection;

[0018] (4) Connect the cables symmetrically to the cable connectors at both ends of the current detection tube. When connecting the cables, please note that the cables connected to the cable connectors at both ends of a battery cell are considered to be an effective detection cable. Confirm the detectable current range of the current detection device according to the formula: I = i × n,

[0019] Where i is the maximum current that a single cable can carry, and n is the number of active sense cables.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention designs a structure that can support detachable battery cells, so that the battery cells can be separated into sections, so that the current sensor can be inserted into it for detection. This structure allows multiple battery cells to pass through the current sensor at the same time. By adjusting the number of energized battery cells, the current passing through the current sensor can be adjusted, thereby achieving the adjustment of the magnitude of the detection current in the current sensor.

[0022] (2) The present invention can connect multiple current conductors to the outer ends of the cell cover and the cell chassis, and use them in conjunction with a current sensor. The current sensor is placed around the outer periphery of the cell. Since there are multiple cells, each cell is connected to a current conductor, which forms a repeated passage of the current conductor in the current sensor. In fact, the cross-sectional area of the object to be detected is enlarged in the current sensor in disguise, thereby enlarging the current flux. The repeated passage of current is simulated by the cell, thereby realizing the expansion of the current source when testing the current sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall structural diagram of Example 1 of the present invention.

[0024] Figure 2 It is a diagram showing the overall structure of the battery cell according to Example 1 of the present invention.

[0025] Figure 3 This is a front structural diagram of Example 2 of the present invention.

[0026] Figure 4 This is a back structural diagram of Example 2 of the present invention.

[0027] Figure 5 This is an overall structural diagram of Example 3 of the present invention.

[0028] Figure 6 This is an overall structural diagram of Example 4 of the present invention.

[0029] Figure 7 Schematic diagram of the ejection structure of Example 4 of the present invention.

[0030] Figure 8 This is an overall flow chart of Example 5 of the present invention. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be pointed out that the embodiments are only specific explanations of the invention and should not be regarded as limitations of the invention. The purpose of the embodiments is to enable those skilled in the art to better understand and reproduce the technical solutions of the present invention. The scope of protection of the present invention shall still be based on the scope defined by the claims.

[0032] Example 1, refer to the attached Figure 1-2 .

[0033] This embodiment provides a battery cell chassis 100, on which at least two battery cells 101 are provided. In this embodiment, ten battery cells 101 are provided. The battery cell chassis 100 is circular, and a first base 102 for fixing or connecting other structures may also be provided on the outside of the battery cell chassis 100. Multiple battery cells 101 are evenly distributed in a ring shape on the battery cell chassis 100.

[0034] like Figure 1 As shown, the end of each battery cell 101 can pass through the rear end of the battery cell chassis 100, and the end of the battery cell 101 is provided with a first connection portion 103 that can be connected to an external wire. The entire battery cell 101 is a conductive part, and an external wire can be connected through the first connection portion 103 to energize the battery cell 101.

[0035] like Figure 1 As shown, the length of the portion (front end and rear end) of each battery cell 101 exposed from the battery chassis 100 is the same, so that both ends of the entire battery chassis 100 are flush, and the length of each battery cell 101 exposed from the battery chassis 100 is longer.

[0036] like Figure 2 As shown, the front end of the battery cell 101 has a first section 104. In this embodiment, the first section 104 is an L-shaped section. In some other embodiments, the first section 104 may also be a bevel or a section of other shapes. Since the battery cell 101 may be combined with other components, the outer end of the first section 104 is rounded to form a smooth first transition surface 105.

[0037] Example 2, refer to the attached Figure 3-4 .

[0038] This embodiment provides a battery cell cover plate 200, which can be docked with the battery cell chassis 100 of Example 1 and the battery cell 101 thereon. Accordingly, the battery cell cover plate 200 is also circular, and a second base 205 can also be provided on the outside of the battery cell cover plate 200 for fixing or installing the battery cell cover plate 200.

[0039] The cell cover 200 is provided with cell interfaces 201 that match the number of cell 101 on the cell chassis in Example 1. The cell chassis 100 and the cell cover 200 can be spliced or disassembled. When the cell chassis 100 and the cell cover 200 are spliced, the cell 101 and the cell interface 201 are docked, so that a structure capable of energizing multiple cell is formed between the cell chassis 100 and the cell cover 200.

[0040] like Figure 3As shown, the interior of the cell cover 200 (at the cell interface 201) is provided with a second cut surface 202 that matches the first cut surface 104 at the front end of the cell 101. When the cell chassis 100 and the cell cover 200 are spliced together, the first cut surface 104 and the second cut surface 202 are in contact and can achieve electrical conduction. For example, in Example 1, the first cut surface 104 is an L-shaped cut surface, and accordingly, the second cut surface 202 is also an L-shaped cut surface, and when the cell 101 and the cell interface 201 are combined, the first cut surface 104 and the second cut surface 202 are joined to form a strip-shaped cell with the same appearance as other parts of the cell. In addition, since the first cut surface 104 and the second cut surface 202 will undergo a joining process when the cell chassis 100 and the cell cover 200 are spliced together, the outer end of the second cut surface 202 is also rounded to form a smooth second transition surface 203 to avoid hard-angle contact during docking.

[0041] like Figure 4 As shown, the back of the cell cover 200 is provided with a second wiring portion 204 that can be connected to an external wire. The principle is the same as that of the battery cell 101 in Example 1. The battery cell interface 201 is actually a shorter battery cell, the end of which passes through the back of the battery cell cover 200 and has a second wiring portion 204. An external wire can be connected through the second wiring portion 204 to energize the battery cell interface 201.

[0042] Example 3, refer to the attached Figure 5 .

[0043] In this embodiment, a combination method of the battery cell chassis 100 of embodiment 1 and the battery cell cover 200 of embodiment 2 is provided, such as Figure 5 As shown, the battery cell chassis 100 and the battery cell cover 200 are both installed on the slide rail 300, and the battery cell chassis 100 and the battery cell cover 200 each have a bracket of the same height, so that the battery cell 101 and the battery cell interface 201 are located at the same height. When one of the battery cell chassis 100 and the battery cell cover 200 moves along the slide rail 300, they can be docked to form a complete power-on structure.

[0044] In actual use, the battery cell chassis 100 and the battery cell cover 200 can be separated, and the current sensor can be put on the battery cell first, or a current sensor support device 400 can be placed on the battery cell chassis 100 and the battery cell cover 200, and the current sensor can be suspended on the battery cell, and then the battery cell chassis 100 and the battery cell cover 200 can be closed. After that, the first wiring part 103 and the second wiring part 204 can be connected with wires and energized as needed, so that the current rating of the current source can be expanded to a maximum of the original current × n (n = the number of battery cells). Compared with replacing a current source with a higher rating, it is easy to use and low cost.

[0045] For parts not described in this embodiment, please refer to Embodiment 1 and Embodiment 2.

[0046] Example 4, refer to the attached Figure 6-7 .

[0047] In this embodiment, a support structure of a current detection device is provided, which can be used to support the cell chassis 100 and the cell cover 200 in Embodiments 1 and 2, and can further optimize the structure in Embodiment 3.

[0048] In this embodiment, the first bracket 500 for supporting the battery cell chassis 100 is fixedly installed, and a supporting device 400 (i.e., a third base) is provided at the front end of the first bracket 500. In this way, the supporting device 400 is just located below the battery cell 101. In this embodiment, the supporting device 400 includes two supporting blocks, which can be used to support current sensors of different heights. In practice, a supporting device 400 with adjustable height can also be used to improve applicability.

[0049] The second bracket 600 for supporting the battery cover is installed on the slide rail 300, the supporting device 400 and the first bracket 500 remain stationary, and the second bracket 600 can move relative to the first bracket 500 through the slide rail 300, so that the battery chassis 100 and the battery cover 200 can be combined or separated.

[0050] like Figure 5 As shown, the cell chassis 100 is mounted on the first bracket 500 via the first base 102 , and the cell cover 200 is mounted on the second bracket 600 via the second base 205 .

[0051] In this embodiment, the battery chassis 100 is provided with an ejection structure 700, and the ejection structure 700 can eject the battery cover 200 away from the battery chassis 100. Specifically, Figure 7 As shown, the ejection structure 700 includes a push rod 701, a push block 702 and a handle 703. The handle 703 is located at the rear of the battery chassis 100. Accordingly, a handle fixing rod 501 is provided on the first bracket 500. The handle 703 can be set to be L-shaped, with a central opening sleeved on the handle fixing rod 501 so that it can rotate around the handle fixing rod 501. One end of the push rod 701 is connected to the handle 703, and the other end is connected to the push block 702 through a return element 704 (spring). The push block 702 is located between the battery cells 101. A groove 705 (arc-shaped) is provided around the push block 702 to match the side shape of the battery cell 101, so that the push block 702 can slide along the battery cell 101.

[0052] When in use, first put the current sensor on the battery cell 101, and then support it through the support device 400 to make it suspended in the air, and then push the second bracket 600 to move the battery cell cover 200 toward the battery cell chassis 100, so that the battery cell 101 and the battery cell interface 201 are combined, and then power on and test according to actual needs. After the test is completed, pry the handle 703 and push the battery cell chassis 100 away from the battery cell cover 200 until the battery cell 101 and the battery cell interface 201 are separated, and then push the second bracket 600 until the current sensor can be taken out.

[0053] Example 5, refer to the attached Figure 8 .

[0054] In this embodiment, a current detection method based on the above current detection device is provided, the method comprising the following steps:

[0055] S1, check whether the current detection tube is in the separated state. If not, you need to manually separate the battery cover and the battery chassis to leave enough space between the battery cover and the battery chassis for the current sensor to pass through;

[0056] S2: Place the current sensor over the battery cell through the gap between the battery cell cover and the battery cell chassis, and support it at the bottom of the current sensor with a supporting structure to ensure that the current sensor does not directly contact the battery cell.

[0057] S3, closing the battery cover and the battery chassis, so that the current sensor is mounted on the current detection tube and ready for detection;

[0058] S4. Connect the cables symmetrically to the cable connectors at both ends of the current detection tube. When connecting the cables, please note that the cables connected to the cable connectors at both ends of a battery cell are considered to be one effective detection cable. Confirm the detectable current range of the current detection device according to the formula: I=i×n.

[0059] Where i is the maximum current that a single cable can pass, and n is the number of valid sense cables;

[0060] S5, perform current detection.

[0061] The working principle of the current sensor in the above embodiment can adopt a relatively mature solution in the prior art. The present invention does not improve the working principle of the current sensor and the structure of the current sensor itself. What the present invention intends to protect is the above-mentioned structure that can be used for the current sensor.

[0062] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

Claims

1. A current detection device, characterized in that: The device comprises a current detection cylinder having multiple detection channels, wherein multiple cable connection parts are respectively provided at both ends of the current detection cylinder, and the cable connection parts can be independently connected to cables. The current detection cylinder comprises a battery base and a battery cover plate, wherein the battery base is provided with multiple battery cells corresponding to the number of the cable connection parts, and the battery cover plate is provided with battery cell interfaces matching the number of the battery cells. The battery base and the battery cover plate can be spliced or disassembled. When the battery base and the battery cover plate are spliced, the battery cells and the battery cell interfaces are docked and electrically connected to form the current detection cylinder. The current passing through the current sensor is adjusted by adjusting the number of energized battery cells, thereby adjusting the magnitude of the detection current in the current sensor. The current sensor can be mounted on the current detection cylinder for current detection. The back of the battery chassis is provided with a first connection portion capable of connecting to an external wire. The entire battery cell is a conductive member, and an external wire can be connected through the first connection portion to energize the battery cell. The back of the battery cover is provided with a second connection portion capable of connecting to an external wire.

2. A current detection device according to claim 1, characterized in that: It includes a first bracket for supporting the battery cell chassis and a second bracket for supporting the battery cell cover. The second bracket can move relative to the first bracket, so that the battery cell chassis and the battery cell cover can be combined or separated; the battery cell chassis is installed on the first bracket through the first base.

3. A current detection device according to claim 1, characterized in that: The battery cell cover is mounted on the second bracket via the second base.

4. A current detection device according to claim 2, characterized in that: The device further comprises a third base for supporting the current sensor, wherein the third base is located below the battery cell.

5. A current detection device according to claim 2, characterized in that: It also includes a slide rail, and the second bracket is installed on the slide rail and can move closer to or away from the first bracket through the slide rail.

6. A current detection device according to claim 1, characterized in that: The battery cell chassis is provided with an ejection structure, and the ejection structure can eject the battery cell cover in a direction away from the battery cell chassis.

7. A current detection device according to claim 6, characterized in that: The ejection structure includes a ejector rod, a ejector block and a handle. The handle is located at the rear of the battery cell chassis. One end of the ejector rod is connected to the handle, and the other end is connected to the ejector block through a return element. The ejector block is located between the battery cells and is provided with a groove that matches the side shape of the battery cell, so that the ejector block can slide along the battery cell.

8. A current detection method, characterized in that: The method is based on the current detection device according to any one of claims 1 to 7, and comprises the following steps: (1) Check whether the current detection tube is in the separated state. If not, you need to manually separate the battery cover and the battery chassis to leave enough space between the battery cover and the battery chassis for the current sensor to pass through; (2) Place the current sensor on the battery cell through the gap between the battery cell cover and the battery cell chassis, and support the bottom of the current sensor through a third base to ensure that the current sensor and the battery cell do not come into direct contact; (3) Close the battery cover and battery chassis to form a state where the current sensor is mounted on the current detection tube and is ready for detection; (4) Connect external wires symmetrically to the cable connection parts at both ends of the current detection tube. When connecting external wires, please note that the external wires connected to the cable connection parts at both ends of a battery cell are considered as an effective detection cable; confirm the detectable current range of the current detection device according to the formula: I=i×n, Where i is the maximum current that a single cable can carry, and n is the number of active sense cables.

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