Storage battery voltage detection device

Abstract

The utility model provides a storage battery voltage detection device, and relates to the technical field of vehicle storage battery detection. The device comprises a handheld part and a voltage measuring structure, the voltage measuring structure comprises a first measuring pole and a second measuring pole, the second measuring pole and the handheld part are relatively fixed, the first measuring pole is in sliding connection with the handheld part, and the first measuring pole is used for sliding in the direction close to or away from the second measuring pole relative to the handheld part; one of the first measurement pole and the second measurement pole is a positive measurement pole, and the other one is a negative measurement pole. A worker can hold the handheld part of the storage battery voltage detection device by one hand so as to measure the voltage of the storage battery by one hand, and the operation is convenient, simple and efficient; the first measuring pole can slide along the handheld part, and the second measuring pole is also positioned in the sliding direction of the first measuring pole, so that the universality of the storage battery voltage detection device on storage batteries with different positive and negative electrode center distances can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle battery testing technology, and more specifically, to a battery voltage testing device. Background Technology

[0002] In the current development of the automotive manufacturing industry, lean manufacturing has become a core pursuit for improving production quality and efficiency in the final assembly workshop. As the requirements for lean manufacturing in the final assembly workshop continue to deepen, the shortcomings of traditional multimeters in actual production testing have become increasingly apparent, making them unsuitable for modern production testing needs. From the perspective of testing coverage, traditional multimeters cannot perform comprehensive testing (full inspection) of the voltage of all batteries connected to the assembly line. On the automotive final assembly line, the voltage stability of each battery directly affects the normal operation of the entire vehicle's electrical system. However, due to limitations in its function and operation, ordinary multimeters cannot perform detailed and comprehensive voltage testing on every battery connected to the assembly line. This leads to some batteries with abnormal voltages potentially being missed, creating potential hidden dangers for subsequent vehicle quality.

[0003] In terms of ease of use, traditional multimeters also fall short. Their large size and inconvenient portability, especially when employees frequently move between workstations on the production line, necessitate additional time and effort to set up and use the multimeter, particularly when employees need to hold both probes in each hand. Furthermore, during actual operation, employees must subjectively interpret the parameters based on the measurement results. This reliance on manual judgment is not only susceptible to the influence of individual employee experience and expertise but also carries the risk of errors due to fatigue, negligence, and other factors. It lacks effective error-proofing mechanisms and cannot provide timely alerts and corrections for potential erroneous operations or abnormal measurement results. Utility Model Content

[0004] This utility model aims to solve at least one of the above-mentioned technical problems.

[0005] To address the aforementioned problems, this utility model provides a battery voltage detection device, comprising a handheld part and a voltage measuring structure. The voltage measuring structure includes a first measuring terminal and a second measuring terminal. The second measuring terminal is fixedly connected to the handheld part, and the first measuring terminal is slidably connected to the handheld part. The first measuring terminal is used to slide relative to the handheld part in a direction closer to or further away from the second measuring terminal. One of the first measuring terminal and the second measuring terminal is a positive measuring terminal, and the other is a negative measuring terminal.

[0006] In this battery voltage detection device, the handheld part serves as both the carrier for mounting the voltage measuring structure and a component for one-handed operation. Simultaneously, the first and second measuring terminals of the voltage measuring structure are directly mounted on the handheld part. When voltage measurement of batteries on the assembly line is required, workers can hold the handheld part of the device with one hand to perform voltage measurements. This method is convenient, simple, and efficient, thereby improving the efficiency of battery voltage measurement. The device can be used to perform a full inspection of all batteries on the production line, preventing the omission of batteries with abnormal voltages that could lead to safety hazards in subsequent vehicles. Furthermore, since the first measuring terminal can slide along the handheld part, and the first measuring terminal is used to slide relative to the handheld part in a direction closer to or further away from the second measuring terminal, that is, the second measuring terminal is located in the sliding direction of the first measuring terminal, the distance between the first measuring terminal and the second measuring terminal can be adjusted according to different models and sizes of batteries, so that while the positive measuring terminal is connected to the positive terminal of the battery, the negative measuring terminal can also be connected to the negative terminal of the battery. Ultimately, this can improve the versatility of the battery voltage detection device for batteries with different positive and negative terminal center distances.

[0007] Furthermore, the battery voltage detection device also includes a control panel, an alarm device, and a battery respectively installed on the handheld part. The voltage measurement structure also includes a measurement main module installed on the handheld part. The battery, the measurement main module, the control panel, and the alarm device are connected in series. The first measurement terminal and the second measurement terminal are electrically connected to the acquisition end of the measurement main module.

[0008] Furthermore, the battery voltage detection device also includes a switch installed on the handheld part, and the switch, the battery, the measurement main module, the control panel, and the alarm device are connected in series.

[0009] Furthermore, the handheld part includes a main frame and a cover, the cover is detachably connected to the main frame, and the cover and the main frame enclose a first receiving cavity, in which the measuring main module is disposed.

[0010] Furthermore, the main frame is provided with a first opening and a second opening respectively communicating with the first receiving cavity, the control panel is embedded in the first opening, and the alarm device is embedded in the second opening.

[0011] Furthermore, the main frame has a second receiving cavity inside, and the second receiving cavity and the first receiving cavity are arranged sequentially along the sliding direction of the first measuring pole. The end of the second receiving cavity away from the first receiving cavity extends through to the surface of the main frame and forms an opening, through which the battery is placed in the second receiving cavity.

[0012] Furthermore, the battery voltage detection device also includes a locking structure and a locking engagement structure. The locking structure is disposed on the first measuring terminal, and the locking engagement structure is disposed on the handheld part. The locking structure is used to fix the first measuring terminal at a set position on the handheld part by cooperating with the locking engagement structure.

[0013] Furthermore, the first measuring pole includes a first pole seat and a first pole body. The first pole body is disposed on the first pole seat. The first pole seat is provided with a threaded hole. The locking structure includes a locking bolt that is threadedly connected to the threaded hole. The locking engagement structure is a planar structure. The locking bolt is used to move relative to the first pole seat to press against a set position on the planar structure.

[0014] Furthermore, the handheld part includes a handheld body and a slide rail, the slide rail being disposed on the handheld body, and the first measuring pole includes a first pole seat and a first pole body, the first pole body being disposed on the first pole seat, and the first pole seat being slidably connected to the slide rail.

[0015] Furthermore, the handheld body includes a top handheld surface, a bottom handheld surface, and two symmetrically arranged side handheld surfaces located between the top handheld surface and the bottom handheld surface. The distance between the two side handheld surfaces decreases in the direction from the top handheld surface to the bottom handheld surface. The slide rail and the second measuring pole are respectively disposed on the bottom handheld surface. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the battery voltage detection device according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the handheld part according to an embodiment of the present utility model;

[0018] Figure 3 This is an exploded view of the handheld part according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram illustrating the electrical connection principle of the electrical components in the battery voltage detection device according to an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Handheld part; 11. Handheld body; 111. Main frame; 1111. First opening; 1112. Second opening; 1113. Third opening; 112. Cover; 12. Slide rail; 121. Planar structure; 1a1. Top surface of handheld; 1a2. Bottom surface of handheld; 1a3. Side surface of handheld; 21. First receiving cavity; 22. Second receiving cavity; 31. First measuring pole; 311. First pole seat; 3111. Threaded hole; 312. First pole body; 32. Second measuring pole; 33. Measuring main module; 41. Control panel; 42. Alarm device; 43. Battery; 44. Switch. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0024] The coordinate system represented by the X, Y, and Z axes in the attached drawings is established with the handheld part 1 as the reference, and the orientation of other components is also represented by this coordinate system. Specifically, the Z-axis in the attached drawings represents the height direction of the handheld part 1, that is, the up-down direction, with the positive direction of the Z-axis indicating up and the negative direction indicating down; the Y-axis in the attached drawings represents the width direction of the handheld part 1, that is, the left-right direction, with the positive direction of the Y-axis indicating left and the negative direction indicating right; the X-axis in the attached drawings represents the length direction (extension direction) of the handheld part 1, that is, the front-back direction, with the positive direction of the X-axis indicating front and the negative direction indicating back. It should be noted that the aforementioned representations of the Z, Y, and X axes are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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.

[0025] See Figure 1A battery voltage detection device according to an embodiment of the present invention includes a handheld part 1 and a voltage measuring structure. The voltage measuring structure includes a first measuring terminal 31 and a second measuring terminal 32. The second measuring terminal 32 is fixedly connected to the handheld part 1, and the first measuring terminal 31 is slidably connected to the handheld part 1. The first measuring terminal 31 is used to slide relative to the handheld part 1 in a direction close to or away from the second measuring terminal 32. Among them, one of the first measuring terminal 31 and the second measuring terminal 32 is a positive measuring terminal and the other is a negative measuring terminal.

[0026] In this embodiment, the handheld part 1 serves as both a carrier for mounting the voltage measuring structure and a component for one-handed operation. Simultaneously, the first measuring terminal 31 and the second measuring terminal 32 of the voltage measuring structure are directly mounted on the handheld part 1. When voltage measurement of batteries on the assembly line is required, workers can hold the handheld part 1 of the battery voltage detection device with one hand to perform voltage measurement. This method is convenient, simple, and efficient, thereby improving the efficiency of battery voltage measurement. The battery voltage detection device can be used to perform a full inspection of all batteries on the production line, preventing safety hazards in subsequent vehicles due to missed detection of batteries with abnormal voltages.

[0027] Furthermore, since the first measuring terminal 31 can slide along the handheld part 1, and the first measuring terminal 31 is used to slide relative to the handheld part 1 in a direction closer to or further away from the second measuring terminal 32, that is, the second measuring terminal 32 is located in the sliding direction of the first measuring terminal 31, the distance between the first measuring terminal 31 and the second measuring terminal 32 can be adjusted according to different models and sizes of batteries, so that while the positive measuring terminal is connected to the positive terminal of the battery, the negative measuring terminal can also be connected to the negative terminal of the battery. Ultimately, this can improve the versatility of the battery voltage detection device for batteries with different positive and negative center distances.

[0028] In this embodiment, the sliding connection between the first measuring electrode 31 and the handheld part 1 can have a certain sliding damping. The magnitude of the sliding damping can be obtained by adjusting the friction between the first measuring electrode 31 and the handheld part 1. Through the sliding damping between the two, the first measuring electrode 31 can be prevented from moving easily, ensuring that the adjusted distance between the first measuring electrode 31 and the second measuring electrode 32 will not change unexpectedly.

[0029] See Figure 1 and Figure 4Optionally, the battery voltage detection device further includes a control panel 41, an alarm device 42, and a battery 43 respectively installed on the handheld part 1. The voltage measurement structure also includes a measurement main module 33 installed on the handheld part 1. The battery 43, the measurement main module 33, the control panel 41, and the alarm device 42 are connected in series. The first measurement terminal 31 and the second measurement terminal 32 are electrically connected to the acquisition end of the measurement main module 33.

[0030] In this embodiment, before measuring the voltage of a certain type of battery, a threshold value can be set via the control panel 41. Then, the position of the first measuring terminal 31 is adjusted to match the center distance between the positive and negative terminals of the battery with that of the second measuring terminal 32 (after the initial adjustment, no further adjustment is needed when measuring the same type of battery). Afterward, the production line worker can hold the handle 1 with one hand and directly connect the first measuring terminal 31 (e.g., the negative measuring terminal) to the negative terminal of the battery, and the second measuring terminal 32 to the positive terminal of the battery. When the measured voltage value exceeds the set threshold, it indicates that the battery is unqualified, and the control panel 41 will activate the alarm device 42 to alert the operator.

[0031] As can be seen from the above, in actual operation, the alarm device 42 will automatically activate to alert employees if the battery is substandard. Employees do not need to make subjective judgments about the parameters based on the measurement results. Consequently, the voltage measurement will not be affected by the employee's personal experience and professional level, nor will it lead to misjudgments about the battery's quality due to fatigue, negligence, or other factors. It has a strong and effective error-proof mechanism.

[0032] The alarm device 42 may include an audible and visual alarm module, which, when activated, simultaneously emits an alarm sound and flashes a red light, providing a better alert to the operator. The control panel 41 may be a control panel with a display function, which can display the measured voltage value for the operator to view. The battery 43 provides power to the control panel 41, alarm device 42, measuring main module 33, first measuring terminal 31, and second measuring terminal 32.

[0033] See Figure 1 and Figure 4 Optionally, the battery voltage detection device also includes a switch 44 installed on the handheld part 1, and the switch 44, the battery 43, the measurement main module 33, the control panel 41 and the alarm device 42 are connected in series.

[0034] In this embodiment, the switch 44, battery 43, measurement main module 33, control panel 41, and alarm device 42 are connected in series to form a measurement circuit. The presence of switch 44 allows the measurement circuit to be switched on and off by closing and opening switch 44. It is understood that switch 44 must be closed before measuring the battery voltage; after the measurement is completed, switch 44 can be opened to prevent waste of battery power and ensure the safety of the battery voltage detection device.

[0035] See Figure 1-3 Optionally, the handheld part 1 includes a main frame 111 and a cover 112. The cover 112 is detachably connected to the main frame 111, and the cover 112 and the main frame 111 enclose a first receiving cavity 21. The measuring main module 33 is disposed in the first receiving cavity 21.

[0036] In this embodiment, the handheld part 1 is not a one-piece structure, but mainly composed of two parts spliced ​​together: the main frame 111 and the cover 112. During the assembly of the battery voltage detection device, the main measuring module 33 can be first installed to the main frame 111 or the cover 112 using fasteners, and then the cover 112 can be spliced ​​to the main frame 111, thus completing the arrangement of the main measuring module 33 in the first receiving cavity 21. Furthermore, the cover 112 is detachably connected to the main frame 111; by opening the cover 112, the main measuring module 33 can be exposed or removed for maintenance.

[0037] In this embodiment, since the main measuring module 33 is built into the handheld part 1, the handheld part 1 can provide protection for the internal main measuring module 33. Secondly, the external shape of the handheld part 1 is not affected by the installation of the main measuring module 33, so that the handheld part 1 has more surface area for the operator to choose to hold. That is, the operator can choose to hold the front area of ​​the handheld part 1 or the rear area of ​​the handheld part 1. In addition, since the main measuring module 33 is built into the handheld part 1, the outer surface of the handheld part 1 can be designed to be more aesthetically pleasing, so as to improve the overall aesthetics of the battery voltage detection device.

[0038] See Figure 1-3 Optionally, the main frame 111 is provided with a first opening 1111 and a second opening 1112 that are respectively connected to the first receiving cavity 21, the control panel 41 is embedded in the first opening 1111, and the alarm device 42 is embedded in the second opening 1112.

[0039] In this embodiment, the control panel 41 is embedded in the first opening 1111, that is, a portion of the control panel 41 is placed in the first receiving cavity 21 through the first opening 1111; the alarm device 42 is embedded in the second opening 1112, that is, a portion of the alarm device 42 is placed in the first receiving cavity 21 through the second opening 1112, thereby improving the integration of the battery voltage detection device. Furthermore, through this arrangement, the control panel 41 can be flush with the surface of the main frame 111, such as the top surface, and the alarm device 42 can be flush with the top surface of the main frame 111. That is, the control panel 41 and the alarm device 42 are exposed for easy observation, but do not protrude from the surface of the main frame 111, ensuring the consistency of the surface of the handheld part 1, making it convenient to hold and carry, and also convenient to place the battery voltage detection device.

[0040] Furthermore, the control panel 41 is placed on the first receiving cavity 21 through the first opening 1111, which facilitates the electrical connection between the control panel 41 and the measuring main module 33 of the measuring structure; the alarm device 42 is placed on the first receiving cavity 21 through the second opening 1112, which facilitates the arrangement of the wires between the alarm device 42 and the control panel 41 in the first receiving cavity 21; this provides better overall safety for the battery voltage detection device.

[0041] Optionally, a third opening 1113 is provided on the surface of the main frame 111 at a position corresponding to the first receiving cavity 21. The aforementioned switch 44 is embedded in the third opening 1113. That is, at least a part of the switch 44 is placed in the first receiving cavity 21 through the third opening 1113 to improve the overall integration. It also prevents the switch 44 from protruding from the surface of the main frame 111 or protruding too much from the surface of the main frame 111, thus ensuring the consistency of the appearance of the handheld part 1.

[0042] See Figure 1-3 Optionally, the main frame 111 is provided with a second receiving cavity 22. The second receiving cavity 22 and the first receiving cavity 21 are arranged sequentially along the sliding direction of the first measuring pole 31. The end of the second receiving cavity 22 away from the first receiving cavity 21 extends through to the surface of the main frame 111 and forms an opening. The battery 43 is placed in the second receiving cavity 22 through the opening.

[0043] In this embodiment, the main frame 111 itself has a second receiving cavity 22 for accommodating the battery 43. When the cover 112 and the main frame 111 are spliced ​​together to form the first receiving cavity 21, the second receiving cavity 22 and the first receiving cavity 21 are arranged sequentially along the sliding direction of the first measuring electrode 31. For example, the sliding direction of the first measuring electrode 31 is the X-axis direction shown in the figure. Correspondingly, the handheld part 1 also extends along the X-axis direction. In order to meet the installation space requirements of the measuring structure, the installation space requirements of the battery 43, and the sliding space requirements of the first measuring electrode 31, the handheld part 1 has a relatively long dimension in the X-axis direction, while its dimensions in the Z-axis and Y-axis can be designed to be relatively small, thereby facilitating the easy gripping of the handheld part 1.

[0044] In this embodiment, the battery 43 can be inserted into the second receiving cavity 22 through an opening via an interference fit. Because of the interference fit, the battery 43 can be prevented from accidentally falling out. When the battery 43 needs to be replaced, it can be pulled out directly from the opening of the second receiving cavity 22. The main frame 111 is made of plastic and can undergo a certain degree of elastic deformation to allow the battery 43 to be inserted or removed.

[0045] Optionally, the battery voltage detection device further includes a locking structure and a locking engagement structure. The locking structure is disposed on the first measuring terminal 31, and the locking engagement structure is disposed on the handheld part 1. The locking structure is used to fix the first measuring terminal 31 at a set position on the handheld part 1 by cooperating with the locking engagement structure.

[0046] In this embodiment, to further prevent the first measuring pole 31 from accidentally moving when its position is adjusted, a locking structure and a locking engagement structure are designed. When it is necessary to adjust the position of the first measuring pole 31, the locking structure and the locking engagement structure are separated, and then the first measuring pole 31 is moved; after the position of the first measuring pole 31 is adjusted, the locking structure and the locking engagement structure are engaged to fix the position of the first measuring pole 31.

[0047] See Figure 1-3 Optionally, the first measuring pole 31 includes a first pole seat 311 and a first pole body 312. The first pole body 312 is disposed on the first pole seat 311. The first pole seat 311 is provided with a threaded hole 3111. The locking structure includes a locking bolt threadedly connected to the threaded hole 3111. The locking engagement structure is a planar structure 121. The locking bolt is used to move relative to the first pole seat 311 to press against a set position on the planar structure 121.

[0048] In this embodiment, the first electrode body 312 is fixed relative to the first electrode seat 311. The first measuring electrode 31 is slidably connected to the handheld part 1 through the first electrode seat 311. The first electrode seat 311 is provided with a threaded hole 3111, and the locking bolt is threaded into the threaded hole 3111. When it is necessary to fix the first measuring electrode 31, the locking bolt can be tightened so that the locking bolt is pressed against the planar structure 121 of the handheld part 1. Then, the static friction between the locking bolt and the planar structure 121 is used to achieve the relative fixation of the first measuring electrode 31 and the handheld part 1.

[0049] See Figure 1-3 Optionally, the handheld part 1 includes a handheld body 11 and a slide rail 12. The slide rail 12 is disposed on the handheld body 11. The first measuring pole 31 includes a first pole seat 311 and a first pole body 312. The first pole body 312 is disposed on the first pole seat 311. The first pole seat 311 is slidably connected to the slide rail 12.

[0050] In this embodiment, the first electrode holder 311 is slidably connected to the slide rail 12. The slide rail 12 may have a dovetail groove, and the first electrode holder 311 slides in conjunction with the dovetail groove of the slide rail 12, ensuring that the first measuring electrode 31 can only move along the length direction (X-axis direction) of the slide rail 12 and will not disengage from the slide rail 12 in other directions. Furthermore, the slide rail 12 may be made of metal, which is not susceptible to deformation like plastic parts, thus ensuring the stability of the first measuring electrode 31 during sliding.

[0051] The handheld body 11 may include the aforementioned main frame 111 and cover 112. The bottom wall of the dovetail groove of the slide rail 12 can serve as the aforementioned planar structure 121 for cooperating with the locking structure.

[0052] See Figure 1-2 Optionally, the handheld body 11 includes a top handheld surface 1a1, a bottom handheld surface 1a2, and two symmetrically arranged side handheld surfaces 1a3 located between the top handheld surface 1a1 and the bottom handheld surface 1a2. The distance between the two side handheld surfaces 1a3 decreases in the direction from the top handheld surface 1a1 to the bottom handheld surface 1a2. The slide rail 12 and the second measuring pole 32 are respectively disposed on the bottom handheld surface 1a2.

[0053] In this embodiment, as shown in the accompanying drawings, the size of the handheld body 11 gradually decreases along the Y-axis from top to bottom, and the overall outer contour cross-sectional shape of the handheld body 11 is triangular. This facilitates one-handed gripping for employees to a certain extent. The handheld bottom surface 1a2 has a relatively small size along the Y-axis; it can be designed to be the same width as the slide rail 12 for mounting and fixing the slide rail 12 and the second measuring pole 32.

[0054] The top surface 1a1 of the handheld device is relatively large in size on the Y-axis. The aforementioned control panel 41, alarm device 42, and switch 44 can be arranged on the top surface 1a1 of the handheld device. In this way, when measuring the voltage of the battery, the handheld device 1 can be held with the top surface 1a1 facing upwards and the two measuring terminals facing downwards. The operator's eyes can see the measuring terminals from the upper left or upper right of the handheld body 11 to determine whether the measuring terminals are in contact with the positive and negative terminals of the battery. At the same time, the operator can also see the voltage value displayed on the top control panel 41.

[0055] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include at least one of those features.

[0056] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A battery voltage detection device, characterized in that, The device includes a handheld part (1) and a voltage measuring structure. The voltage measuring structure includes a first measuring terminal (31) and a second measuring terminal (32). The second measuring terminal (32) is fixedly connected to the handheld part (1), and the first measuring terminal (31) is slidably connected to the handheld part (1). The first measuring terminal (31) is used to slide relative to the handheld part (1) in a direction close to or away from the second measuring terminal (32). Among them, one of the first measuring terminal (31) and the second measuring terminal (32) is a positive measuring terminal, and the other is a negative measuring terminal.

2. The battery voltage detection device according to claim 1, characterized in that, It also includes a control panel (41), an alarm device (42), and a battery (43) respectively installed on the handheld part (1). The voltage measurement structure also includes a measurement main module (33) installed on the handheld part (1). The battery (43), the measurement main module (33), the control panel (41), and the alarm device (42) are connected in series. The first measurement terminal (31) and the second measurement terminal (32) are electrically connected to the acquisition end of the measurement main module (33).

3. The battery voltage detection device according to claim 2, characterized in that, It also includes a switch (44) installed on the handheld part (1), and the switch (44), the battery (43), the measuring main module (33), the control panel (41) and the alarm device (42) are connected in series.

4. The battery voltage detection device according to claim 2, characterized in that, The handheld part (1) includes a main frame (111) and a cover (112). The cover (112) is detachably connected to the main frame (111), and the cover (112) and the main frame (111) enclose a first receiving cavity (21). The measuring main module (33) is disposed in the first receiving cavity (21).

5. The battery voltage detection device according to claim 4, characterized in that, The main frame (111) is provided with a first opening (1111) and a second opening (1112) respectively communicating with the first receiving cavity (21). The control panel (41) is embedded in the first opening (1111) and the alarm device (42) is embedded in the second opening (1112).

6. The battery voltage detection device according to claim 4, characterized in that, The main frame (111) has a second receiving cavity (22) inside. The second receiving cavity (22) and the first receiving cavity (21) are arranged sequentially along the sliding direction of the first measuring pole (31). The end of the second receiving cavity (22) away from the first receiving cavity (21) extends through to the surface of the main frame (111) and forms an opening. The battery (43) is placed in the second receiving cavity (22) through the opening.

7. The battery voltage detection device according to claim 1, characterized in that, It also includes a locking structure and a locking engagement structure. The locking structure is disposed on the first measuring pole (31), and the locking engagement structure is disposed on the handheld part (1). The locking structure is used to fix the first measuring pole (31) at a set position on the handheld part (1) by cooperating with the locking engagement structure.

8. The battery voltage detection device according to claim 7, characterized in that, The first measuring pole (31) includes a first pole seat (311) and a first pole body (312). The first pole body (312) is disposed on the first pole seat (311). The first pole seat (311) is provided with a threaded hole (3111). The locking structure includes a locking bolt that is threadedly connected to the threaded hole (3111). The locking engagement structure is a planar structure (121). The locking bolt is used to move relative to the first pole seat (311) to press against a set position on the planar structure (121).

9. The battery voltage detection device according to any one of claims 1-8, characterized in that, The handheld part (1) includes a handheld body (11) and a slide rail (12). The slide rail (12) is disposed on the handheld body (11). The first measuring pole (31) includes a first pole seat (311) and a first pole body (312). The first pole body (312) is disposed on the first pole seat (311). The first pole seat (311) is slidably connected to the slide rail (12).

10. The battery voltage detection device according to claim 9, characterized in that, The handheld body (11) includes a top handheld surface (1a1), a bottom handheld surface (1a2), and two symmetrically arranged side handheld surfaces (1a3) located between the top handheld surface (1a1) and the bottom handheld surface (1a2). The distance between the two side handheld surfaces (1a3) decreases in the direction from the top handheld surface (1a1) to the bottom handheld surface (1a2). The slide rail (12) and the second measuring pole (32) are respectively disposed on the bottom handheld surface (1a2).

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