Battery internal resistance detection device
By incorporating heat dissipation components and thermally conductive adhesive into the battery internal resistance detection device, the problem of heat accumulation caused by the sealed housing structure is solved, achieving a more efficient heat dissipation effect, preventing overheating and system crashes, and ensuring stable operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-03-10
AI Technical Summary
The sealed housing structure of existing battery internal resistance testers prevents heat from dissipating in time, which may cause the internal controller to overheat and crash.
By setting heat sinks on the circuit board and using thermally conductive adhesive to connect the circuit board and the housing, with the heat sink at least partially exposed outside the housing cavity, heat is transferred to the outside air through the heat sink and thermally conductive adhesive, thereby improving heat dissipation capacity.
This effectively reduces the probability of the battery internal resistance detection device overheating and crashing, improves heat dissipation capacity, and ensures stable equipment operation.
Smart Images
Figure CN223986199U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic equipment technology, and in particular to a battery internal resistance detection device. Background Technology
[0002] A battery internal resistance tester, also known as a battery internal resistance meter, is an instrument used to measure the internal resistance, voltage, and temperature of rechargeable batteries such as lead-acid and lithium batteries to determine their health status. It can also be used to measure the ESR (Equivalent Series Resistance) parameter of electrolytic capacitors. The battery internal resistance tester is microprocessor-controlled, and its internal processor accurately detects the battery's internal resistance, voltage, and temperature. Its key feature is that it performs measurements without interrupting the UPS (Uninterruptible Power System), using AC low-resistance measurement and noise reduction technology. This significantly reduces testing time by allowing measurements to be taken while the device under test is running, without needing to stop the normal operation of the equipment.
[0003] One related battery internal resistance tester has a sealed plastic housing structure. The internal controller generates heat during operation, and the sealed internal structure cannot dissipate the heat in time. High temperature may cause the internal controller to "crash". Utility Model Content
[0004] Therefore, it is necessary to provide a battery internal resistance detection device that can improve heat dissipation capacity to address the above-mentioned technical problems.
[0005] An embodiment of the first aspect of this application provides a battery internal resistance detection device, including a housing, a circuit board, a first thermally conductive adhesive, and a heat sink. The housing encloses an interior to form a receiving cavity; the circuit board is located inside the receiving cavity; the first thermally conductive adhesive connects the circuit board and the housing; the heat sink is connected to the circuit board, and at least a portion of the heat sink is exposed in the receiving cavity.
[0006] In one embodiment, the circuit board includes a first surface and a second surface disposed opposite to each other, and a heat sink is connected to the first surface; the battery internal resistance detection device further includes a power supply module, which is located in the receiving cavity and mounted on the second surface.
[0007] In one embodiment, the orthographic projection of the power supply module on the circuit board at least partially overlaps with the orthographic projection of the heat sink on the circuit board.
[0008] In one embodiment, the orthographic projection of the power supply module on the circuit board lies within the orthographic projection of the heat sink on the circuit board.
[0009] In one embodiment, the housing is provided with a heat dissipation window that connects the inside and outside of the receiving cavity, and at least part of the heat dissipation component is exposed from the heat dissipation window.
[0010] In one embodiment, it further includes: an anti-slip pad located outside the receiving cavity and connected to the housing.
[0011] In one embodiment, the anti-slip sticker is ring-shaped and surrounds the heat dissipation window.
[0012] In one embodiment, the heat sink is made of metal.
[0013] In one embodiment, a second thermally conductive adhesive is used to fill the space between the heat sink and the circuit board.
[0014] In one embodiment, it further includes a socket mechanism, at least partially located within the receiving cavity and connected to the circuit board.
[0015] The battery internal resistance detection device provided in this application includes a housing, a circuit board, a first thermally conductive adhesive, and a heat sink. The housing encloses an interior to form a receiving cavity; the circuit board is located within the receiving cavity; the first thermally conductive adhesive connects the circuit board and the housing; the heat sink is connected to the circuit board, and at least a portion of the heat sink is exposed outside the receiving cavity. By connecting the heat sink to the circuit board and exposing at least a portion of the heat sink within the receiving cavity, this application allows the heat generated by the circuit board to be transferred to the air outside the receiving cavity through the heat sink, thereby reducing the probability of the battery internal resistance detection device overheating and malfunctioning. By connecting the circuit board and the housing with the first thermally conductive adhesive, the heat generated by the circuit board can also be transferred to the housing through the first thermally conductive adhesive, and then to the air outside the receiving cavity through the housing, further improving the heat dissipation capacity of the battery internal resistance detection device. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a battery internal resistance detection device according to some embodiments of this application.
[0018] Figure 2 An exploded view of an example battery internal resistance detection device is shown.
[0019] Figure 3 An exploded structural diagram of an example housing, circuit board, heat sink, power supply module, anti-slip pad, and connector mechanism is shown.
[0020] Figure label:
[0021] 10. Battery internal resistance detection device;
[0022] 100. Housing; 110. Upper housing; 111. Display panel; 112. Mounting part; 120. Lower housing; 130. Heat dissipation window; 140. Drop protection part; 150. Handle;
[0023] 200, Circuit board; 210, First surface; 220, Second surface;
[0024] 300. Heat sink components;
[0025] 400. Power supply module;
[0026] 500, Anti-slip stickers;
[0027] 600. Socket mechanism; 610. Interface module;
[0028] 700. External wiring harness. Detailed Implementation
[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.
[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0035] The battery internal resistance detection device provided in the embodiments of this application is described below with reference to the accompanying drawings. In the drawings, for ease of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions.
[0036] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a battery internal resistance detection device according to some embodiments of this application; Figure 2 An exploded view of an example battery internal resistance detection device is shown. Figure 3 An exploded structural diagram of an example housing, circuit board, heat sink, power supply module, anti-slip pad, and connector mechanism is shown. The diagram is designed to provide a more intuitive view of the device's structure. Figure 3 Part of the casing is not displayed.
[0037] like Figures 1 to 3As shown, this application provides a battery internal resistance detection device 10, including a housing 100, a circuit board 200, a first thermally conductive adhesive (not shown), and a heat sink 300. The housing 100 encloses a receiving cavity (not shown). The circuit board 200 is located within the receiving cavity, and the first thermally conductive adhesive connects the circuit board 200 and the housing 100. The heat sink 300 is connected to the circuit board 200, and at least a portion of the heat sink 300 is exposed within the receiving cavity.
[0038] Optionally, the housing 100 includes an upper housing 110 and a lower housing 120, both of which are integrally injection molded. When the upper housing 110 and the lower housing 120 are connected, they together enclose a receiving cavity for housing the circuit board 200.
[0039] Optionally, a microprocessor (not shown) is provided on the circuit board 200.
[0040] Optionally, the heat sink 300 may be made of metals with high thermal conductivity such as copper, silver, and aluminum, or non-metallic materials such as graphite and ceramics.
[0041] Optionally, the material of the first thermally conductive adhesive includes materials with high thermal conductivity and insulation, such as silicone, epoxy resin, and polyurethane. When it is coated between the circuit board 200 and the housing 100, it can transfer heat from the circuit board 200 to the housing 100.
[0042] The battery internal resistance detection device 10 of this application embodiment connects the heat sink 300 to the circuit board 200, with at least a portion of the heat sink 300 exposed in the receiving cavity. This allows the heat generated by the circuit board 200 to be transferred to the air outside the receiving cavity through the heat sink 300, thereby reducing the probability of the battery internal resistance detection device 10 overheating and malfunctioning. Furthermore, by using a first thermally conductive adhesive to connect the circuit board 200 and the housing 100, the heat generated by the circuit board 200 can also be transferred to the housing 100 through the first thermally conductive adhesive, and then to the air outside the receiving cavity through the housing 100, further improving the heat dissipation capacity of the battery internal resistance detection device 10.
[0043] In some embodiments, the circuit board 200 includes a first surface 210 and a second surface 220 disposed opposite to each other, and the heat sink 300 is connected to the first surface 210. The battery internal resistance detection device 10 also includes a power supply module 400, which is located within the receiving cavity and mounted on the second surface 220.
[0044] The power supply module 400 can be a battery used to power other components on the circuit board 200. The second surface 220 is equivalent to the front of the circuit board 200, and the first surface 210 is equivalent to the back of the circuit board 200. The power supply module 400 and other components are mounted on the second surface 220.
[0045] Optionally, at least a portion of the first thermally conductive adhesive covers the surface of the power supply module 400, and the power supply module 400 is connected to the upper housing 110 through the first thermally conductive adhesive.
[0046] Optionally, the heat sink 300 is connected to the first surface 210 by bolts, welding or other processes, and the heat sink 300 and the first surface 210 are in contact to improve the heat conduction efficiency between the heat sink 300 and the circuit board 200.
[0047] The battery internal resistance detection device 10 of this application improves heat dissipation capacity without affecting the layout of components on the front side of the circuit board 200 by placing the heat sink 300 on the back side of the circuit board 200.
[0048] In other embodiments, a second thermally conductive adhesive (not shown) is used to fill the space between the heat sink 300 and the circuit board 200. The second thermally conductive adhesive can be applied when the first surface 210 is not smooth enough, filling the grooves on the first surface 210 to improve the thermal conductivity between the first surface 210 and the heat sink 300.
[0049] Optionally, the material of the second thermally conductive adhesive is the same as that of the first thermally conductive adhesive.
[0050] In some embodiments, the orthographic projection of the power supply module 400 on the circuit board 200 and the orthographic projection of the heat sink 300 on the circuit board 200 overlap at least partially. The heat generated when the power supply module 400 discharges is transferred to the circuit board 200 and further transferred to the heat sink 300 on the back of the circuit board 200, so that the heat sink 300 can also dissipate heat for the power supply module 400.
[0051] Optionally, the orthographic projection of the power supply module 400 on the circuit board 200 is located within the orthographic projection of the heat sink 300 on the circuit board 200.
[0052] The battery internal resistance detection device 10 of this application improves the heat dissipation efficiency of the heat sink 300 on the power supply module 400 by placing the orthogonal projection of the power supply module 400 on the circuit board 200 within the orthogonal projection of the heat sink 300 on the circuit board 200, thereby reducing the risk of the power supply module 400 being damaged due to high temperature.
[0053] In some embodiments, the housing 100 is provided with a heat dissipation window 130 that connects the inside and outside of the receiving cavity, and at least part of the heat dissipation component 300 is exposed from the heat dissipation window 130.
[0054] Optionally, the heat dissipation window 130 is located on the lower housing 120. When the battery internal resistance detection device 10 is placed on a horizontal surface, the heat dissipation window 130 faces the horizontal surface, which can effectively transfer the heat inside the cavity to the platform supporting the battery internal resistance detection device 10, thereby further improving the heat dissipation efficiency.
[0055] Optionally, the shape of the heat dissipation window 130 can be at least one of polygons, circles, ellipses or irregular shapes.
[0056] In some embodiments, the battery internal resistance detection device 10 further includes an anti-slip sticker 500, which is located outside the receiving cavity and connected to the housing 100.
[0057] Optionally, the anti-slip pad 500 can be made of any material with a high coefficient of friction, and it is attached to the lower housing 120. The anti-slip pad 500 is annular in shape and surrounds the heat dissipation window 130, exposing it. When the battery internal resistance detection device 10 is placed on a horizontal surface, the anti-slip pad 500 directly contacts the horizontal surface, allowing the battery internal resistance detection device 10 to be placed stably.
[0058] In some embodiments, the battery internal resistance detection device 10 further includes a connector mechanism 600, at least a portion of which is located within a receiving cavity and connected to the circuit board 200. The connector mechanism 600 is electrically connected to a microprocessor on the circuit board 200.
[0059] Optionally, the battery internal resistance detection device 10 also includes an external wiring harness 700 for connecting the material to be tested. The connector mechanism 600 includes an interface module 610 exposed in the receiving cavity for connecting to the external wiring harness 700.
[0060] Optionally, the interface module 610 includes 4 sets of test lead sockets, 1 set of external HOLD sockets, 1 set of temperature probe sockets, 1 set of USB sockets, 1 set of charging plugs, and 1 set of indicator lights for the charging plugs.
[0061] In some embodiments, the housing 100 is provided with a drop protection part 140 around the side away from the receiving cavity. The drop protection part 140 is made of an elastic material to improve the drop protection performance of the battery internal resistance detection device 10.
[0062] Optionally, a handle 150 is provided on the outside of the housing 100 to facilitate user gripping, thereby improving the portability of the battery internal resistance detection device 10.
[0063] Optionally, the upper housing 110 is also provided with a display panel 111. The display panel 111 is located on the side of the upper housing 110 away from the receiving cavity and is electrically connected to the circuit board 200. The display panel 111 is used to display test data.
[0064] Optionally, the upper housing 110 is also provided with a mounting part 112, which is located on the side of the upper housing 110 away from the receiving cavity, and is used to install the equipment nameplate.
[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.
[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A battery internal resistance detection device characterized by comprising: The application relates to a battery internal resistance detection device. The battery internal resistance detection device comprises a shell, a circuit board, a first heat-conducting glue, and a heat-dissipating piece. The shell encloses a containing cavity. The circuit board is located in the containing cavity. The first heat-conducting glue connects the circuit board and the shell.
2. The battery internal resistance detection device according to claim 1, characterized by The heat-dissipating piece is connected with the circuit board, and at least part of the heat-dissipating piece is exposed to the containing cavity. The circuit board comprises a first surface and a second surface arranged oppositely.
3. The battery internal resistance detection device according to claim 2, characterized by The heat-dissipating piece is connected with the first surface.
4. The battery internal resistance detection device according to claim 3, characterized by The battery internal resistance detection device further comprises a power supply module.
5. The battery internal resistance detection device according to claim 1, wherein The power supply module is located in the containing cavity and is installed on the second surface.
6. The battery internal resistance detection device according to claim 5, wherein The power supply module is located in the containing cavity and is installed on the second surface. The orthographic projection of the power supply module on the circuit board at least partially overlaps the orthographic projection of the heat-dissipating piece on the circuit board.
7. The battery internal resistance detection device according to claim 6, wherein The orthographic projection of the power supply module on the circuit board is located in the orthographic projection of the heat-dissipating piece on the circuit board.
8. The battery internal resistance detection device according to claim 1, wherein The shell is provided with a heat-dissipating window which is in communication with the inside and outside of the containing cavity.
9. The battery internal resistance detection device according to claim 1, wherein At least part of the heat-dissipating piece is exposed from the heat-dissipating window.
10. The battery internal resistance detection device according to claim 1, wherein The application further relates to a battery internal resistance detection device. The battery internal resistance detection device comprises an anti-skid sticker. The anti-skid sticker is located outside the containing cavity and is connected with the shell. The shape of the anti-skid sticker is annular. The anti-skid sticker is arranged around the heat-dissipating window. The material of the heat-dissipating piece comprises metal. The second heat-conducting glue is filled between the heat-dissipating piece and the circuit board. The application further relates to a battery internal resistance detection device. The battery internal resistance detection device comprises a socket mechanism. The socket mechanism is at least partially located in the containing cavity and is connected with the circuit board.