Sampler of integrated fuse
By integrating a fuse into the sampler, the problem of users not being able to know the fuse status in a timely manner is solved, enabling convenient maintenance and improved safety. Combined with a transparent window and heat dissipation design, the safety and maintenance efficiency of the sampler are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI BAIWAY ELECTRONIC CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-12
AI Technical Summary
In existing technologies, the status of the sampler's fuse is difficult to obtain in a timely manner, affecting maintenance and troubleshooting, and resulting in insufficient safety.
Design a sampler with integrated fuses, including a transparent window for observing fuse status, a snap-fit connection structure, and vents for heat dissipation, to facilitate direct observation and repair of fuses by users, and to achieve wire-free connection through a circuit board.
This allows users to directly observe the fuse status, facilitating inspection and replacement, improving safety and maintenance efficiency, and reducing heat accumulation through a heat dissipation structure.
Smart Images
Figure CN224231936U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic product technology, specifically, it is a sampler with an integrated fuse. Background Technology
[0002] In the field of electronic products, the sampler is a crucial component. Existing technology discloses an electric bicycle remaining mileage display system (authorization announcement number CN200944133Y), which includes an electric bicycle battery, a sampler, a power management chip, a mileage conversion module, a power-off memory module, a display module, and a display terminal. The power management chip samples the remaining battery power parameters through the sampler. The mileage conversion module converts the remaining power parameters into a mileage that can be driven and sends it to the display module. The display module is connected to a display terminal mounted on the surface of the electric bicycle. The display terminal accurately displays the remaining mileage that the electric bicycle can travel with the remaining power; this display terminal can be an analog meter or a digital tube, etc. A power-off memory module is connected to the power management chip and the mileage conversion module to ensure that the saved data is not lost when the power supply is interrupted. Referring to this existing patent, it is clear that the sampler is a crucial component for detecting battery power parameters.
[0003] To ensure safety, many samplers are equipped with fuses, but users often cannot know the status of the fuses in a timely manner during use, which is not conducive to maintenance and troubleshooting. Utility Model Content
[0004] The purpose of this invention is to provide a sampler with an integrated fuse to solve the problems existing in the prior art.
[0005] The purpose of this invention is achieved as follows: A sampler with an integrated fuse, comprising:
[0006] The housing is formed by a detachable snap-fit top cover and a bottom cover, with the top cover positioned on top of the bottom cover.
[0007] The circuit board, which is installed inside the housing, has a socket for connecting to the electrical signals of the coulomb counter.
[0008] The fuse connected to the circuit board is installed inside the housing and has a pair of fuse terminals located on its left and right sides respectively.
[0009] The shunt plate, which is connected to the circuit board, is installed inside the housing and has a pair of shunt terminals on its left and right sides respectively.
[0010] A transparent window is located on the top cover, directly opposite the fuse.
[0011] Furthermore, the two fuse terminals of the fuse are detachably connected to the upper surface of the circuit board and are energized by the circuit board.
[0012] Furthermore, the top cover has two pairs of wiring holes, one pair of which are respectively connected to a pair of fuse terminals, and the other pair of wiring holes are respectively connected to a pair of shunt terminals.
[0013] Furthermore, the top cover is integrally connected with two upper buckles, which are located on both sides of the top cover. The bottom shell is provided with two lower locking holes, which are located on both sides of the bottom shell and correspond one-to-one with the two upper buckles. The upper buckles can be detachably inserted into the lower locking holes.
[0014] Furthermore, the top cover has several first vent holes.
[0015] Furthermore, the bottom of the bottom shell is provided with several second vent holes.
[0016] Furthermore, the bottom edge of the bottom shell is designed as a downwardly protruding lower convex edge, so that all the second vents are located in the internal space of the lower convex edge. The lower convex edge has at least two side grooves, which connect the internal space of the lower convex edge with the outside.
[0017] Furthermore, the second vent is divided into two groups, with each group of second vents facing the position of the fuse and the shunt plate, respectively.
[0018] The beneficial effects of this utility model are as follows:
[0019] 1. Users can directly observe whether the fuse is blown through the transparent window of the top cover without opening the top cover, which facilitates troubleshooting and repair;
[0020] 2. The top cover and bottom cover are detachably connected by snaps. Gently pinch the two upper clips inward and move the top cover so that the upper clips disengage from the lower locking hole. The top cover can then be easily removed, which is convenient for users to inspect and measure, as well as replace fuses, wiring, or other components.
[0021] 3. The sampler and its fuse will generate heat when operating at high current. Therefore, several second vent holes are opened at the bottom of the bottom shell and several first vent holes are opened on the side of the top cover to remove the heat through air convection. Attached Figure Description
[0022] Figure 1 This is a perspective view of the present invention.
[0023] Figure 2 This is a top-down view of the utility model.
[0024] Figure 3 This is a schematic diagram showing the disassembled top cover and bottom shell.
[0025] Figure 4 This is an exploded view of the internal components of the housing of this utility model.
[0026] Figure 5 This is a schematic diagram of the vent of this utility model.
[0027] Figure 6 This is a schematic diagram showing the interlocking relationship between the top cover and the bottom shell. Detailed Implementation
[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] like Figure 1-4 As shown, a sampler with an integrated fuse is proposed, comprising:
[0030] The housing is formed by a detachable fastening of a top cover 6 and a bottom cover 7. The top cover 6 is located on top of the bottom cover 7, and the bottom cover 7 is generally provided with special connection holes for fixed connection to the corresponding device.
[0031] Circuit board 3, which is installed inside the housing, has a socket 10 for electrical signal connection with the coulomb counter instrument;
[0032] The fuse 1, which is electrically connected to the circuit board 3, is installed inside the housing and has a pair of fuse terminals 2 located on its left and right sides respectively.
[0033] The shunt plate 4, which is electrically connected to the circuit board 3, is installed inside the housing and has a pair of shunt terminals 5 on its left and right sides respectively. The shunt plate 4 and the circuit board 3 are in close contact with each other and directly connected without any wires.
[0034] The transparent window 6a is located on the top cover 6 directly opposite the fuse 1. Users can directly observe whether the fuse 1 is burned through the transparent window 6a of the top cover 6 without opening the top cover 6, which is convenient for troubleshooting and maintenance.
[0035] Typically, a circuit board 3 is needed to connect to the coulomb counter. Circuit board 3 has a socket 10, through which a 5-core shielded cable is connected to connect the voltage signal generated by the manganese copper to the coulomb counter. There is also a B+ red wire (e.g., Figure 1 (As shown) is connected to the battery pack, so that the B+ terminal of the battery pack can be connected to the working power supply of the coulomb meter, and it also serves as the detection of the total battery voltage.
[0036] Currently, in various applications of large-capacity lithium battery packs, the protection function of the BMS is often over-reliant. However, if the internal electronic components fail and cannot be protected in time, it will lead to fire or even catastrophic consequences. Therefore, it is necessary to connect a one-time fuse 1 in series at the output end of the battery pack to stop the loss in time in case of an accident, which is of great significance. However, using a fuse alone at the positive terminal is too inefficient. Therefore, this solution adds a shunt 8 for sampling the current of the coulomb meter at the negative terminal, and corresponding functional components are connected in series on the positive and negative terminals respectively, achieving a cost-effectiveness and functional integration of 1+1>2. Compared with previous solutions, it has achieved a breakthrough in installation, inspection and maintenance.
[0037] like Figure 4 As shown, the circuit board 3 has a special shape with a notch to accommodate the middle part of the fuse 1. The two fuse terminals 2 of the fuse 1 are detachably connected to the upper surface of the circuit board 3 and are electrically connected to the circuit board 3, thus achieving the following two functions:
[0038] 1. The battery's B+ terminal does not require a red wire connection to achieve the purpose of sampling the battery pack voltage and powering the instrument;
[0039] 2. An LED and a resistor are installed on the circuit board 3. The LED and the resistor are connected in series and connected to both ends of the fuse. When the fuse 1 blows, if the load is still connected, the LED will light up. During maintenance and troubleshooting, it is easy to see the light emitted by the LED at the transparent window 6a. You can know that the fuse 1 has blown without opening the top cover 6.
[0040] like Figure 3 , 5 As shown, the top cover 6 has two pairs of wiring holes 6c. One pair of wiring holes 6c is directly opposite to and close to a pair of fuse terminals 2, and the other pair of wiring holes 6c is directly opposite to and close to a pair of shunt terminals 5, thereby facilitating quick wiring.
[0041] like Figure 6 As shown, the top cover 6 and the bottom shell 7 are detachably connected by a snap-fit structure, which is as follows: the top cover 6 is integrally connected with two upper snap pieces 6d, which are located on both sides of the top cover 6. The bottom shell 7 is provided with two lower locking holes 7c, which are located on both sides of the bottom shell 7 and correspond one-to-one with the two upper snap pieces 6d. The upper snap pieces 6d can be detachably inserted into the lower locking holes 7c.
[0042] like Figure 5As shown, the top cover 6 has several first vent holes 6b on its side wall, and the bottom shell 7 has several second vent holes 7d at its bottom. The bottom edge of the bottom shell 7 is a downwardly protruding lower convex edge 7a, so that all the second vent holes 7d are located in the internal space of the lower convex edge 7a. The lower convex edge 7a has two side grooves 7b, which connect the internal space of the lower convex edge 7a to the outside. When components such as the fuse 1 and the shunt 4 generate heat, the heat is discharged through the first vent holes 6b, and the cooler air from the outside enters the shell through the side grooves 7b and the second vent holes 7d.
[0043] Combination Figure 4 , 5 As shown, in order to better dissipate heat, the second vent 7d is divided into two groups. The two groups of second vent 7d are respectively positioned opposite the fuse 1 and the shunt plate 4, so that the second vent 7d is close to the heat source for better heat dissipation.
[0044] The solution in this embodiment has the following technical advantages:
[0045] 1. Since the sampler in this solution integrates fuse 1, it makes wiring, inspection and maintenance more convenient for users. The positive and negative terminals of the battery pack are connected to the positive and negative terminals of the sampler respectively, avoiding the predicament of having nowhere to connect the positive terminal wire. In addition, through the internal circuit board 3, the electrical connection of the coulomb counter positive terminal is realized and led out to the socket 10. At the same time, the circuit board 3 connects the two sampling terminals of the shunt plate 8 through copper pillars, realizing high reliability of wireless, solderless assembly and electrical connection.
[0046] Second, the installation of fuses also helps guide users to use electricity properly, greatly ensuring the safety of lithium battery packs during use.
[0047] 3. The top cover 6 and the bottom shell 7 are detachably connected by snaps. By gently pinching the two upper clips 6d inward, the top cover 6 can be easily removed, which is convenient for users to inspect and measure, as well as replace the fuse 1 and the connecting wires, or other components.
[0048] IV. Users can directly observe whether fuse 1 is burned through the transparent window 6a of the top cover 6;
[0049] 5. Because the sampler and its fuse 1 will generate heat when operating at high current, the bottom of the bottom shell 7 is provided with several second vent holes 7d and the top cover 6 is provided with several first vent holes 6b to carry away the heat through air convection.
[0050] VI. The two fuse terminals 2 of fuse 1 are detachably connected to the upper surface of circuit board 3 and form a power connection with circuit board 3 without any wires, making assembly simple;
[0051] 7. Connect circuit board 3 to the manganese copper signal terminal directly with copper screws. No wires are required. The assembly is simple, the structure is reliable, and the thermoelectric potential is low.
[0052] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "front," and "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. In this utility model, it should also be noted that the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to fixed connection, detachable connection, integral molding connection, mechanical connection, or indirect connection through intermediate connecting parts. The specific meaning of the terms in this utility model can be understood according to the specific circumstances.
[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.
[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A sampler with an integrated fuse, characterized in that, include: The housing is formed by a detachable fastening of a top cover (6) and a bottom cover (7), wherein the top cover (6) is located on top of the bottom cover (7); Circuit board (3), which is installed inside the housing, has a socket (10) for electrical signal connection with the coulomb counter instrument; The fuse (1) connected to the circuit board (3) is installed inside the housing and has a pair of fuse terminals (2) located on its left and right sides respectively; The shunt plate (4) connected to the circuit board (3) is installed inside the housing and has a pair of shunt terminals (5) on its left and right sides respectively. A transparent window (6a) is located on the top cover (6) directly opposite the fuse (1).
2. The sampler with an integrated fuse according to claim 1, characterized in that, The two fuse terminals (2) of the fuse (1) are detachably connected to the upper surface of the circuit board (3) and are energized with the circuit board (3).
3. The sampler with an integrated fuse according to claim 1, characterized in that, The top cover (6) has two pairs of wiring holes (6c), one pair of wiring holes (6c) is directly opposite to a pair of fuse terminals (2), and the other pair of wiring holes (6c) is directly opposite to a pair of shunt terminals (5).
4. The sampler with an integrated fuse according to claim 1, characterized in that, The top cover (6) is integrally connected with two upper fasteners (6d), which are located on both sides of the top cover (6). The bottom shell (7) is provided with two lower locking holes (7c), which are located on both sides of the bottom shell (7) and correspond one-to-one with the two upper fasteners (6d). The upper fasteners (6d) are detachably inserted into the lower locking holes (7c).
5. A sampler with an integrated fuse according to claim 1, characterized in that, The top cover (6) has several first vent holes (6b).
6. A sampler with an integrated fuse according to claim 5, characterized in that, The bottom shell (7) is provided with several second vent holes (7d).
7. A sampler with an integrated fuse according to claim 6, characterized in that, The bottom edge of the bottom shell (7) is set as a downward protruding lower convex edge (7a) so that all the second vent holes (7d) are located in the internal space of the lower convex edge (7a). The lower convex edge (7a) has at least two side grooves (7b) which connect the internal space of the lower convex edge (7a) with the outside.
8. A sampler with an integrated fuse according to claim 6, characterized in that, The second vent (7d) is divided into two groups, with the two groups of second vents (7d) facing the positions of the fuse (1) and the shunt plate (4), respectively.