Battery module polarity detection device

Abstract

The utility model provides a battery module polarity detection device. The battery module polarity detection device comprises a substrate, a detection assembly arranged on the substrate, and a plurality of probes arranged on the substrate. The substrate is placed at the top of the battery module; each probe penetrates through the substrate, the bottom end of each probe is provided with a telescopic elastic contact, and the elastic contact is used for abutting against a pole at the top of each battery cell in the battery module; each probe is electrically connected with the detection assembly, and the detection assembly can detect the polarity of the corresponding battery cell through the corresponding probe. According to the battery module polarity detection device of the utility model, through the arrangement of the detection assembly and the probes, each probe can abut against the pole group of each battery cell in the battery module, so that the detection assembly can detect the polarity of the battery cell corresponding to the probes through the plurality of corresponding probes, thereby realizing the detection of the polarity of the battery cell in the battery module. And the connection error of the battery cell pole is prevented, so that the production quality of the battery module is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of battery module testing equipment, and in particular to a battery module polarity testing device. Background Technology

[0002] With the rapid development of new energy technologies, battery modules are increasingly widely used in electric vehicles, energy storage systems, and other fields. The safety and performance of battery modules are directly related to the operating efficiency and reliability of the entire system. Among them, the battery cell, as the basic unit of the battery module, is fundamental to ensuring the normal operation of the battery module through proper connection between the individual cells.

[0003] During the production of battery modules, operators need to manually assemble and package the cells, arranging them correctly to ensure that the terminals of each cell form a proper series-parallel connection. Current technology typically involves using tooling to expose the markings on the cell terminals after the modules are stacked, allowing for visual identification of the cell polarity.

[0004] However, this method of inspection can lead to visual fatigue for personnel due to prolonged observation, making it prone to errors or oversights, resulting in some faulty modules going undetected. This can cause incorrect connection of the battery cell terminals, leading to decreased battery module performance, malfunctions, and even safety accidents. Utility Model Content

[0005] In view of this, the present invention aims to provide a battery module polarity detection device that can detect the polarity of the cells in the battery module to prevent incorrect connection of the cell terminals.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A battery module polarity detection device includes a substrate, a detection component disposed on the substrate, and a plurality of probes disposed on the substrate; the substrate is placed on top of the battery module.

[0008] Each of the probes penetrates the substrate, and the bottom end of each probe is provided with a retractable elastic contact, which is used to abut against the terminal post at the top of each cell in the battery module; each of the probes is disposed on opposite sides in the width direction of the substrate, and each of the probes is spaced apart along the length direction of the substrate.

[0009] Each of the probes is electrically connected to the detection component, and the detection component can detect the polarity of the corresponding battery cell through the corresponding probe.

[0010] Furthermore, each probe has a wire connected to its tip, and the detection assembly has terminals for connecting the wires, with each terminal configured to correspond to one of the wires.

[0011] Furthermore, the substrate is provided with a plurality of sliding grooves extending along the length direction of the substrate; each sliding groove corresponds to a probe, and the probe passes through the sliding groove and can slide in the sliding groove.

[0012] Furthermore, a flange is formed on the inner wall of the slide groove, and an elastic element is provided between the flange and the upper end of the probe; a limiting block is provided at the lower end of the probe, and a plurality of limiting holes for receiving the limiting block are formed at the bottom of the slide groove, the limiting holes being spaced apart along the extension direction of the slide groove; when the probe is driven to approach the battery module, the elastic element is compressed and stores energy, and the limiting block disengages from the limiting hole; when the elastic element releases energy, the probe moves away from the battery module, and the limiting block enters the limiting hole and abuts against the bottom of the flange.

[0013] Furthermore, the elastic element is a spring sleeved on the probe.

[0014] Furthermore, the bottom of the substrate is provided with multiple side baffles, as well as a first baffle and a second baffle; each of the side baffles can abut against two end faces in the width direction of the battery module; the first baffle and the second baffle can abut against two end faces in the length direction of the battery module.

[0015] Furthermore, the substrate is provided with a sliding mechanism for connecting the second baffle, and the substrate is provided with a window for the second baffle to pass through; the second baffle slides along the length direction of the substrate through the sliding mechanism.

[0016] Furthermore, the sliding mechanism includes two fixed plates located at both ends of the window, and a slide rod located between the two fixed plates; the top of the second baffle is sleeved on the slide rod, allowing the second baffle to slide along the slide rod.

[0017] Furthermore, the second baffle is provided with a handle; a threaded post is formed on the handle, and the handle is screwed into a threaded hole on the second baffle through the threaded post; when the threaded post is screwed into the threaded hole by rotating the handle, the end of the threaded post can press against the slide rod.

[0018] Furthermore, the battery module polarity detection device also includes a display screen that is communicatively connected to the detection component, and the display screen is capable of displaying the detection results output by the detection component.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] The battery module polarity detection device of this utility model, through the setting of detection components and probes, allows each probe to abut against the electrode group of each cell in the battery module, enabling the detection component to detect the polarity of the cell corresponding to the probe through multiple corresponding probes, thereby realizing the detection of cell polarity in the battery module, preventing incorrect connection of cell terminals, and thus improving the production quality of battery modules.

[0021] Furthermore, each probe is connected to the terminal block of the detection component via a wire, facilitating connection between the probe and the detection component. The number of probes connected can also be adjusted via the terminal block. The probes slide within grooves on the substrate, allowing for varying spacing to accommodate battery modules with different cell thicknesses and numbers. The flanges and limiting holes in the grooves, along with the elastic elements on the probes, enable positional fixation of the probes after movement.

[0022] In addition, the elastic element is a spring sleeved on the probe, which has a simple and reliable structure and can prevent the spring from dislodging from the probe when it moves along the slide groove. Multiple baffles are provided at the bottom of the substrate to facilitate the placement and fixation of the battery module detection device. A sliding mechanism connecting the second baffle is provided on the substrate. The second baffle slides along the length of the substrate via the sliding mechanism to accommodate battery modules of different lengths. The sliding arrangement between the slide rod and the second baffle improves the smoothness of the second baffle's movement.

[0023] Furthermore, the sliding mechanism includes two fixed plates and a slide rod disposed between the two fixed plates. The second baffle can slide along the slide rod, improving the smoothness of the second baffle's movement. A handle is provided on the second baffle; when the handle is turned, the threaded post screws into the threaded hole and presses against the slide rod to fix the position of the second baffle. The battery module polarity detection device also includes a display screen communicatively connected to the detection component, allowing operators to view the cell polarity detection results on the display screen. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the battery module polarity detection device described in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the battery module polarity detection device described in an embodiment of the present invention from another perspective;

[0027] Figure 3 This is a schematic diagram of the internal structure of the groove described in an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the handle and the second baffle as described in the embodiment of this utility model from a top view.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Substrate; 101. Side baffle; 102. First baffle; 103. Second baffle; 104. Indicator mark;

[0031] 2. Detection components; 201. Wire; 202. Terminal;

[0032] 3. Probe; 301. Elastic contact; 302. Elastic element; 303. Limiting block;

[0033] 4. Slide groove; 401. Flange; 402. Limiting hole;

[0034] 5. Sliding mechanism; 501. Fixed plate; 502. Slide rod;

[0035] 6. Handle; 601. Threaded post;

[0036] 7. Display screen. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0039] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0041] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] This embodiment relates to a battery module polarity detection device, such as... Figure 1 As shown, the overall structure includes a substrate 1, a detection component 2 disposed on the substrate 1, and a plurality of probes 3 disposed on the substrate 1.

[0043] The substrate 1 is placed on top of the battery module. Each probe 3 penetrates the substrate 1, and its bottom end has a retractable elastic contact 301 for contacting the terminal post at the top of each battery cell in the battery module. The probes 3 are located on opposite sides of the substrate 1 in the width direction and are spaced apart along the length direction of the substrate 1. Each probe 3 is electrically connected to a detection component 2, which can detect the polarity of the corresponding battery cell through the corresponding probe 3.

[0044] As described above, by setting up the detection component 2 and the probe 3, each probe 3 can abut against the electrode group of each cell in the battery module, so that the detection component 2 can detect the polarity of the cell corresponding to the probe 3 through the corresponding multiple probes 3, thereby realizing the detection of the cell polarity in the battery module, preventing incorrect connection of the cell terminals, and thus improving the production quality of the battery module.

[0045] Based on the above overview, specifically, the detection component 2 in this embodiment includes at least a relay for connecting each probe 3, and a voltage signal processing device (host computer or PLC, etc.). The voltage signal processing device controls the relay to connect different probes 3 to the device. At this time, the device can detect the voltage value of one or more corresponding battery cells through the corresponding probe 3. Simultaneously, the device compares the measured voltage value with multiple preset voltage reference values. If the difference between the measured voltage value and the voltage reference value is within a preset range, the polarity of the tested battery cell is correct; if the difference exceeds the preset range, the polarity of the tested battery cell is incorrect. The voltage signal processing device in detection component 2 can then output the detection result.

[0046] In a specific implementation, an indicator mark 104 is provided at one corner of the substrate 1 in this embodiment. By aligning the position of the indicator mark 104 on the substrate 1 with the designated position of the battery module, errors in cell polarity detection can be avoided due to incorrect placement of the battery module polarity detection device, thereby improving the accuracy of detection and facilitating the use of the detection device. In this embodiment, the indicator mark 104 is a "+" sign, used to ensure that the corner of the substrate 1 with the indicator mark 104 corresponds to the positive electrode of the battery module.

[0047] To facilitate the connection of probe 3 to detection component 2, such as Figure 1 As shown, in this embodiment, each probe 3 has a wire 201 connected to its top end. The detection assembly 2 has terminals 202 for connecting the wires 201, and the terminals 202 are configured in a one-to-one correspondence between each wire 201. Figure 1 The portion of the wire 201 used to connect the probe 3 to the terminal 202 is omitted. By providing the terminal 202 for connecting the wire 201, the connection between the probe 3 and the detection component 2 can be facilitated. Furthermore, due to differences in battery module specifications and the varying number of cells within them, the number of probes 3 connected can be adjusted via the terminal 202 to match the terminals of each cell in the battery module.

[0048] Besides the difference in the number of battery cells in the battery module, the thickness of the cells also varies, which prevents probe 3 from making contact with the terminals on the battery cells, resulting in poor versatility of this embodiment. Therefore, in order to improve the versatility of the battery module testing device in this embodiment, such as... Figure 1 As shown, the substrate 1 of this embodiment has a plurality of grooves 4 extending along the length direction of the substrate 1. Each groove 4 corresponds to a probe 3, and the probe 3 passes through the groove 4 and can slide within the groove 4. By setting the grooves 4, the probe 3 can slide within the grooves 4, thereby changing the spacing between the probes 3 to adapt to battery modules with different cell thicknesses and numbers, and improving the versatility of the battery module testing device of this embodiment.

[0049] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, a flange 401 is formed on the inner wall of the slide groove 4 in this embodiment, and an elastic member 302 is provided between the flange 401 and the upper end of the probe 3. A limiting block 303 is provided at the lower end of the probe 3, and a plurality of limiting holes 402 for receiving the limiting blocks 303 are formed at the bottom of the slide groove 4. The limiting holes 402 are distributed at intervals along the extension direction of the slide groove 4.

[0050] The operator can manually operate probe 3. When probe 3 is driven closer to the battery module, the elastic element 302 is compressed and energy stored by the flange 401 and probe 3, and the limiting block 303 disengages from the limiting hole 402. At this time, probe 3 can move laterally along the slide groove 4, thus changing the distance between probes 3. Subsequently, when the elastic element 302 releases energy, probe 3 moves away from the battery module, and the limiting block 303 enters the limiting hole 402 and abuts against the bottom of the flange 401. At this time, the limiting hole 402 constitutes a positional constraint on the limiting block 303. By restricting the movement of the limiting block 303, and with the flange 401 blocking the limiting block 303, probe 3 is prevented from dislodging from the slide groove 4, thereby fixing the position of probe 3.

[0051] In practical implementation, the limiting block 303 of this embodiment can be a nut screwed onto the probe 3. When the probe 3 needs to be disassembled for maintenance or replacement, the probe 3 can be pulled out of the slide groove 4 by removing the nut, thus facilitating the disassembly of the probe 3 and making maintenance and repair work easier. In this embodiment, a slide groove 4 is provided with 3 limiting holes 402, and the number of limiting holes 402 can be adjusted according to actual needs. The more limiting holes 402 there are, the greater the adjustable range of the probe 3 position.

[0052] Specifically, in this embodiment, the elastic element 302 is a spring sleeved on the probe 3. Its structure is simple and reliable, and it can effectively drive the probe 3 to reset so that the limiting block 303 enters the limiting hole 402. At the same time, the spring sleeved on the probe 3 can prevent the spring from falling off the probe 3 when the probe 3 moves along the slide groove 4, thus improving reliability.

[0053] Since the battery module detection device in this embodiment places the substrate 1 on top of the battery module, in order to prevent deviation during placement of the battery module detection device, such as... Figure 2 As shown, the bottom of the substrate 1 in this embodiment is provided with multiple side baffles 101, as well as a first baffle 102 and a second baffle 103. Each side baffle 101 can abut against two end faces in the width direction of the battery module, and the first baffle 102 and the second baffle 103 can abut against two end faces in the length direction of the battery module. By providing the side baffles 101, the first baffle 102 and the second baffle 103, when the substrate 1 is placed on the battery module, it can constrain the battery module, preventing the substrate 1 from shifting during the detection process and causing the detection to be interrupted, or preventing some probes 3 from failing to contact the terminal posts of the battery cell due to improper placement of the substrate 1, thereby facilitating the placement and fixation of the battery module detection device.

[0054] To accommodate battery modules of different lengths, the substrate 1 of this embodiment is provided with a sliding mechanism 5 connecting the second baffle 103, and the substrate 1 is provided with a window for the second baffle 103 to pass through. The second baffle 103 slides along the length direction of the substrate 1 via the sliding mechanism 5. By setting the sliding mechanism 5, the second baffle 103 can slide along the length direction, changing the distance between the first baffle 102 and the second baffle 103, thereby accommodating battery modules of different lengths and improving the versatility of the battery module testing device.

[0055] Specifically, the sliding mechanism 5 includes two fixed plates 501 located at both ends of the window, and a slide rod 502 located between the two fixed plates 501. The top of the second baffle 103 is sleeved on the slide rod 502, allowing the second baffle 103 to slide along the slide rod 502. This sliding arrangement between the slide rod 502 and the second baffle 103 improves the smoothness of the second baffle 103's movement. In a specific implementation, two slide rods 502 are configured; when the second baffle 103 slides, the two slide rods 502 can restrict the rotation of the second baffle 103, preventing friction between the second baffle 103 and the window on the substrate 1.

[0056] Furthermore, as a specific form of implementation, such as Figure 1 , Figure 4 As shown, the second baffle 103 in this embodiment is provided with a handle 6. A threaded post 601 is formed on the handle 6, and the handle 6 is screwed into a threaded hole on the second baffle 103 through the threaded post 601. When the handle 6 is rotated and the threaded post 601 is screwed into the threaded hole, the end of the threaded post 601 can press against the slide rod 502. The handle 6 facilitates the movement of the second baffle 103 by gripping the handle 6, and the threaded post 601 on the handle 6 allows the handle 6 to be rotated to press the threaded post 601 against the slide rod 502, thereby fixing the position of the second baffle 103.

[0057] Finally, the battery module polarity detection device in this embodiment also includes a display screen 7 communicatively connected to the detection component 2. The display screen 7 can display the detection results output by the detection component 2, allowing operators to view the detection results regarding the polarity of the cells in the battery module. In specific implementations, the detection results in this embodiment may include the measured voltage value, as well as a message indicating correct or incorrect polarity.

[0058] In summary, the battery module polarity detection device of this embodiment, through the setting of detection component 2 and probes 3, allows each probe 3 to abut against the electrode group of each cell in the battery module, enabling detection component 2 to detect the polarity of the cell corresponding to the probe 3 through the corresponding multiple probes 3, thereby realizing the detection of cell polarity in the battery module, preventing incorrect connection of cell terminals, and thus improving the production quality of battery modules, and has good practicality.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery module polarity detection device, characterized in that: It includes a substrate, a detection component disposed on the substrate, and a plurality of probes disposed on the substrate; The substrate is placed on top of the battery module; Each of the probes penetrates the substrate, and the bottom end of the probe is provided with a retractable elastic contact, which is used to abut against the terminal post at the top of each cell in the battery module. Each of the probes is disposed on opposite sides in the width direction of the substrate, and each of the probes is arranged at intervals along the length direction of the substrate. Each of the probes is electrically connected to the detection component, and the detection component can detect the polarity of the corresponding battery cell through the corresponding probe; The substrate is provided with a plurality of grooves extending along the length direction of the substrate; The grooves correspond one-to-one with the probes, and the probes pass through the grooves and can slide within the grooves; A flange is formed on the inner wall of the groove, and an elastic element is provided between the flange and the upper end of the probe; The probe is provided with a limiting block at its lower end, and the bottom of the slide groove is provided with a plurality of limiting holes for receiving the limiting block, the limiting holes being spaced apart along the extension direction of the slide groove. When the probe is driven to approach the battery module, the elastic element is compressed and stores energy, and the limiting block disengages from the limiting hole. When the elastic element releases energy, the probe moves away from the battery module, and the limiting block enters the limiting hole and abuts against the bottom of the flange; The limiting block is a nut screwed onto the probe; The bottom of the substrate is provided with multiple side baffles, as well as a first baffle and a second baffle; Each of the side baffles can respectively abut against the two end faces of the battery module in the width direction; The first baffle and the second baffle can respectively abut against the two end faces of the battery module in the length direction; The substrate is provided with a sliding mechanism for connecting the second baffle, and the substrate is provided with a window for the second baffle to pass through. The second baffle slides along the length of the substrate via the sliding mechanism; The sliding mechanism includes two fixed plates located at both ends of the window, and a sliding rod located between the two fixed plates; The top of the second baffle is fitted onto the slide rod, allowing the second baffle to slide along the slide rod. Two slide rods are configured to restrict the rotation of the second baffle.

2. The battery module polarity detection device according to claim 1, characterized in that: Each probe has a wire connected to its tip, and the detection assembly has terminals for connecting the wires, with each terminal configured to correspond to one of the wires.

3. The battery module polarity detection device according to claim 1, characterized in that: The elastic element is a spring sleeved on the probe.

4. The battery module polarity detection device according to claim 1, characterized in that: A handle is provided on the second baffle; The handle has a threaded post, and the handle is screwed into the threaded hole on the second baffle through the threaded post; When the threaded post is screwed into the threaded hole by rotating the handle, the end of the threaded post can press against the slide bar.

5. The battery module polarity detection device according to any one of claims 1 to 4, characterized in that: The battery module polarity detection device also includes a display screen that is communicatively connected to the detection component, and the display screen is capable of displaying the detection results output by the detection component.

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