Water inlet detection device, battery pack and electric device

Abstract

The utility model discloses a water inlet detection device, battery pack and electric device, relate to the battery field. The water inlet detection device includes casing, resistance and two detection conductors, and the casing has the bottom plate, and the upper surface of bottom plate is recessed with the water storage groove, two detection conductors are arranged at intervals in the casing, and two detection conductors include the immersion end of the water storage groove and the connecting end of the water storage groove, and the resistance is set up on the casing, and is connected with the connecting end electricity of two detection conductors. The water inlet detection device provided by the utility model has the characteristics of more fast response speed, and the detection result is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a water ingress detection device, a battery pack, and an electrical device. Background Technology

[0002] Currently, some battery packs on the market are equipped with water ingress detection devices. These devices have at least one probe. When water enters the battery pack, the probe activates the detection circuit to detect the water ingress.

[0003] This type of water ingress detection device has a flat bottom structure at the bottom of the probe, which prevents water entering the battery pack from accumulating stably at the probe location, resulting in slow response speed and inaccurate detection results. Utility Model Content

[0004] The purpose of this invention is to provide a water ingress detection device, which has the characteristics of faster response speed and more accurate detection results.

[0005] Another objective of this invention is to provide a battery pack that can quickly and accurately identify internal water ingress.

[0006] Another objective of this utility model is to provide an electrical device that has higher safety features.

[0007] The embodiments of this utility model provide a technical solution: A water ingress detection device includes a housing, a resistor, and two detection conductors. The housing has a base plate, and a water storage tank is recessed on the upper surface of the base plate. The two detection conductors are spaced apart within the housing, and each detection conductor includes an immersion end extending into the water tank and a connection end facing away from the water tank. The resistor is disposed on the housing and electrically connected to the connection ends of the two detection conductors.

[0008] In an optional embodiment, the housing further includes a side plate, which is arranged around the periphery of the bottom plate and forms a receiving cavity with the bottom plate, and the water storage tank is located at the bottom of the receiving cavity; The side plate has a water inlet hole at one end near the bottom plate that communicates with the receiving cavity, and the bottom of the water inlet hole is flush with the top of the bottom plate.

[0009] In an optional embodiment, the housing further includes a top cover connected to one end of the side plate away from the bottom plate and sealing the top opening of the receiving cavity; The upper surface of the top cover is recessed with a mounting groove, and the resistor is disposed in the mounting groove.

[0010] In an optional embodiment, the connecting end of the detection conductor extends through the side plate and into the top cover along the height direction of the housing, and the immersion end extends into the interior of the bottom plate and protrudes at the bottom of the water tank.

[0011] In an optional embodiment, the top cover is provided with a conductive channel connecting the mounting groove and the connection end of the detection conductor; The water inlet detection device also includes connectors, two of which are disposed within the conductive channel and connect the resistor to the connection terminals of the two detection conductors.

[0012] In an optional embodiment, the bottom of the water tank is inclined, and the submerged end is located at the lowest point of the inclined surface.

[0013] In an optional embodiment, the housing is provided with a slot for engaging with an external structure to secure the housing. The number of card slots is two, the two card slots are arranged side by side, and the opening directions of the two card slots are opposite to each other.

[0014] In an optional embodiment, the slot extends along the height direction of the housing, and the base plate is disposed at one end of the housing in the height direction.

[0015] This utility model also provides a battery pack, including a housing, a battery management system and the aforementioned water ingress detection device. The water ingress detection device includes a shell, a resistor and two detection conductors. The shell has a bottom plate, and a water storage tank is recessed on the upper surface of the bottom plate. The two detection conductors are spaced apart within the housing, and each detection conductor includes an immersion end extending into the water tank and a connection end facing away from the water tank. The resistor is disposed on the housing and electrically connected to the connection ends of the two detection conductors; The housing is connected to the box body via a slot and fixed at the lowest point of the inner wall of the box body. The battery management system is electrically connected to the connection ends of the two detection conductors for detecting the conductivity of the liquid in the water tank.

[0016] This utility model also provides an electrical device, including the aforementioned battery pack. The battery pack includes a housing, a battery management system, and the aforementioned water ingress detection device. The water ingress detection device includes a shell, a resistor, and two detection conductors. The shell has a bottom plate, and a water storage tank is recessed on the upper surface of the bottom plate. The two detection conductors are spaced apart within the housing, and each detection conductor includes an immersion end extending into the water tank and a connection end facing away from the water tank. The resistor is disposed on the housing and electrically connected to the connection ends of the two detection conductors; The housing is connected to the box body via a slot and fixed at the lowest point of the inner wall of the box body. The battery management system is electrically connected to the connection ends of the two detection conductors for detecting the conductivity of the liquid in the water tank.

[0017] Compared to existing technologies, the water ingress detection device provided by this utility model has a water storage tank recessed on the upper surface of the bottom plate of its housing. The submerged ends of the two detection conductors extend into the water storage tank. Even if the amount of water is small, it can still accumulate in the water storage tank when water enters the battery pack, thereby conducting the two detection conductors and achieving rapid and accurate detection of water ingress. Therefore, the beneficial effects of the water ingress detection device provided by this utility model include: faster response speed and more accurate detection results. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 A partial structural schematic diagram of the battery pack provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the water ingress detection device from one perspective. Figure 3 This is a schematic diagram of the water ingress detection device from another perspective. Figure 4 This is an exploded view of the water inlet detection device; Figure 5 This is a circuit diagram showing the connection between the battery management system and the water ingress detection device. Figure 6 A cross-sectional view of a water inlet detection device; Figure 7 This is another cross-sectional view of the water inlet detection device.

[0020] Icons: 100-Water ingress detection device; 110-House; 111-Base plate; 1111-Water storage tank; 112-Side plate; 1121-Water inlet; 113-Receiving cavity; 114-Slot; 115-Top cover; 1151-Mounting slot; 120-Resistor; 130-Detection conductor; 131-Immersion end; 132-Connection end; 140-Connector; 200-Battery management system; 210-Box body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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.

[0025] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] Example Please see Figure 1 , Figure 1 The diagram shown is a partial structural schematic of the battery pack provided in this embodiment.

[0029] The battery pack provided in this embodiment includes a housing 210, a battery management system 200, and a water ingress detection device 100. The water ingress detection device 100 is disposed inside the housing 210. The battery management system 200 is electrically connected to the water ingress detection device 100, and the water ingress detection device 100 detects the water ingress situation inside the housing 210.

[0030] Please refer to the following: Figure 2 , Figure 3 and Figure 4 , Figure 2 The image shown is a schematic diagram of the water ingress detection device 100 provided in this embodiment from one perspective. Figure 3 The diagram shown is a structural schematic of the water ingress detection device 100 from another perspective. Figure 4 The diagram shown is an exploded view of the water inlet detection device 100.

[0031] The water ingress detection device 100 provided in this embodiment is applied to a battery pack and includes a housing 110, a resistor 120, and two detection conductors 130. The housing 110 has a base plate 111, and a water storage tank 1111 is recessed on the upper surface of the base plate 111. The two detection conductors 130 are spaced apart within the housing 110, and each detection conductor 130 includes an immersed end 131 extending into the water storage tank 1111 and a connecting end 132 facing away from the water storage tank 1111. The resistor 120 is disposed on the housing 110 and is electrically connected to the connecting end 132 of the two detection conductors 130.

[0032] Please refer to the following: Figure 5 , Figure 5 The diagram shows the circuit between the battery management system 200 and the water ingress detection device 100.

[0033] In fact, the bottom plate 111 of the housing 110 is located at the lowest point of the inner wall of the battery pack housing 210. The battery management system 200 of the battery pack is electrically connected to the connection end 132 of the two detection conductors 130 to detect the liquid conductivity state in the water tank 1111.

[0034] When water enters the battery pack housing 210, the water will collect along the inner wall of the housing 210 to the lowest point, namely, onto the bottom plate 111 of the water ingress detection device 100 housing 110. Since a water storage tank 1111 is recessed on the upper surface of the bottom plate 111, even a small amount of water can stably collect in the water storage tank 1111. This conducts the two detection conductors 130 into the submerged ends 131 of the water storage tank 1111, causing a significant decrease in the resistance 120 detected by the battery management system 200. This determines that water has entered the battery pack housing 210 and triggers an alarm signal. The water storage tank 1111 is located on the upper surface of the bottom plate 111, facilitating cleaning or drying during subsequent maintenance.

[0035] In order to further improve the response speed of the water inlet detection device 100 and improve the accuracy of the detection results, in this embodiment, the bottom of the water storage tank 1111 is inclined, and the submerged end 131 is located at the lowest point of the inclined surface.

[0036] In practical applications, even with a small amount of water entering the water storage tank 1111, the water can be guided by the inclined surface at the bottom of the water storage tank 1111 and gather to a certain height at the submerged end 131, ensuring that the submerged end 131 can be quickly circulated.

[0037] To enable quick assembly and disassembly of the water ingress detection device 100 within the housing 210, in this embodiment, the housing 110 is provided with a slot 114 for engaging with an external structure to secure the housing 110. Furthermore, to ensure the stability of the installation structure, in this embodiment, two slots 114 are provided, arranged side-by-side, with their openings facing away from each other.

[0038] The slot 114 extends along the height direction of the housing 110, and the base plate 111 is located at one end of the height direction of the housing 110. It can be understood that the inside of the housing 210 is provided with protruding ribs corresponding to the two slots 114, and the two protruding ribs are respectively embedded in the two slots 114.

[0039] In practical applications, when installing the water inlet detection device 100, align the bottom ends of the two slots 114 of the water inlet detection device 100 with the top ends of the two protruding ribs of the housing 210 respectively. Then, press down on the water inlet detection device 100 so that the two protruding ribs on the housing 210 extend into the two slots 114 respectively. As the water inlet detection device 100 continues to move downward, it slides along the two slots 114 until the water inlet detection device 100 moves to the lowest position on the inner wall of the housing 210, thus completing the installation of the water inlet detection device 100.

[0040] When it is necessary to disassemble the water ingress detection device 100, simply apply force to the water ingress detection device 100 to make it slide upward along the two protruding ribs until the two protruding ribs are completely disengaged from the two slots 114. It can be seen that the water ingress detection device 100 provided in this embodiment is convenient and quick to disassemble and assemble, saving time and effort.

[0041] In another embodiment, in order to ensure that the assembly structure is more stable and reliable, additional locking components such as screws can be configured to lock the water ingress detection device 100 and the housing 210 after the water ingress detection device 100 is assembled.

[0042] Please refer to the following: Figure 6 and Figure 7 , Figure 6 The image shown is a cross-sectional view of the water inlet detection device 100. Figure 7 The image shown is another cross-sectional view of the water inlet detection device 100.

[0043] In this embodiment, the housing 110 further includes a side plate 112, which is arranged around the periphery of the bottom plate 111 and together with the bottom plate 111 to form a receiving cavity 113, with a water storage tank 1111 located at the bottom of the receiving cavity 113. A water inlet hole 1121 communicating with the receiving cavity 113 is provided at one end of the side plate 112 near the bottom plate 111, and the bottom of the water inlet hole 1121 is flush with the top of the bottom plate 111.

[0044] Understandably, the water inlet hole 1121 on the side plate 112 connects the receiving cavity 113 of the housing 110 with the internal space of the box 210, facilitating the entry of water from inside the battery pack into the water storage tank 1111 on the bottom plate 111. Furthermore, the bottom of the water inlet hole 1121 is flush with the top of the bottom plate 111, achieving optimal water flow. Even with a small amount of water entering, water can flow unimpeded into the water storage tank 1111 through the water inlet hole 1121, ensuring the accuracy and timeliness of the water ingress detection device 100. The side plate 112, encircling the periphery of the bottom plate 111 and forming the receiving cavity 113 with the bottom plate 111, isolates most of the detection conductor 130 from the outside environment, reducing interference from condensate and lowering the probability of false alarms.

[0045] In this embodiment, the housing 110 further includes a top cover 115, which is connected to the end of the side plate 112 away from the bottom plate 111 and seals the top opening of the receiving cavity 113. The upper surface of the top cover 115 is recessed with a mounting groove 1151, and the resistor 120 is disposed in the mounting groove 1151.

[0046] The mounting slot 1151 provides storage space for the resistor 120, which on the one hand fixes the resistor 120, and on the other hand prevents the resistor 120 from protruding from the outer surface of the housing 110, so as to avoid the resistor 120 from contacting other components or structures inside the battery pack and being damaged, resulting in inaccurate test results.

[0047] To prevent accidental conduction of the two detection conductors 130 and further improve the accuracy of the detection results, in this embodiment, the two detection conductors 130 are embedded inside the housing 110. Specifically, the connection end 132 of the detection conductor 130 passes through the side plate 112 along the height direction of the housing 110 and extends into the top cover 115, while the submerged end 131 extends into the bottom plate 111 and protrudes at the bottom of the water storage tank 1111.

[0048] In fact, the connection end 132 also extends from the upper surface of the top cover 115, thereby connecting to the battery management system 200 of the battery pack. In other words, in this embodiment, the two detection conductors 130, except for the submerged end 131 extending into the water tank 1111 and the connection end 132 extending out of the top cover 115, are all embedded inside the housing 110. This not only prevents them from contacting each other and conducting electricity, but also prevents them from contacting the internal components of the battery pack and accidentally conducting electricity.

[0049] Regarding the connection between resistor 120 and the two detection conductors 130, in this embodiment, the top cover 115 is provided with a conductive channel that connects the mounting groove 1151 and the connection end 132 of the detection conductors 130. The water inlet detection device 100 also includes connectors 140, two connectors 140 are disposed in the conductive channel and connect resistor 120 and the connection end 132 of the two detection conductors 130.

[0050] In other words, two connectors 140 are embedded inside the top cover 115. One end of the resistor 120 is connected to the connection terminal 132 of one of the detection conductors 130 through one connector 140, and the other end of the resistor 120 is connected to the connection terminal 132 of another detection conductor 130 through another connector 140, thereby realizing the electrical connection between the resistor 120 and the two detection conductors 130.

[0051] In summary, the water ingress detection device 100 provided in this embodiment has the characteristics of faster response speed and more accurate detection results. Benefiting from the beneficial effects of the water ingress detection device 100, the battery pack provided in this embodiment has the characteristics of being able to quickly and accurately identify the water ingress situation inside the casing 210, and has higher safety.

[0052] In addition, this embodiment also provides an electrical device including the aforementioned battery pack. Benefiting from the advantages of this battery pack, the electrical device provided in this embodiment also features higher safety in use.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water inlet detection device, characterized by, It includes a housing (110), a resistor (120) and two detection conductors (130). The housing (110) has a base plate (111) and a water storage tank (1111) is recessed on the upper surface of the base plate (111). Two detection conductors (130) are spaced apart inside the housing (110), and each detection conductor (130) includes an immersion end (131) extending into the water tank (1111) and a connection end (132) facing away from the water tank (1111). The resistor (120) is disposed on the housing (110) and electrically connected to the connection end (132) of the two detection conductors (130).

2. The water inlet detection device according to claim 1, characterized in that, The housing (110) also includes a side plate (112), which is arranged around the periphery of the bottom plate (111) and together with the bottom plate (111) forms a receiving cavity (113), and the water storage tank (1111) is located at the bottom of the receiving cavity (113); The side plate (112) has a water inlet (1121) at one end near the bottom plate (111) that communicates with the receiving cavity (113), and the bottom of the water inlet (1121) is flush with the top of the bottom plate (111).

3. The water inlet detection device according to claim 2, characterized in that, The housing (110) also includes a top cover (115), which is connected to one end of the side plate (112) away from the bottom plate (111) and covers the top opening of the receiving cavity (113); The top cover (115) has a recessed mounting groove (1151) on its upper surface, and the resistor (120) is disposed in the mounting groove (1151).

4. The water inlet detection device according to claim 3, characterized in that, The connecting end (132) of the detection conductor (130) extends through the side plate (112) along the height direction of the housing (110) and into the top cover (115), while the immersion end (131) extends into the interior of the bottom plate (111) and is exposed at the bottom of the water tank (1111).

5. The water inlet detection device according to claim 4, characterized in that, The top cover (115) is provided with a conductive channel that connects the mounting groove (1151) and the connection end (132) of the detection conductor (130); The water inlet detection device (100) also includes connectors (140), two of which are disposed in the conductive channel and connect the resistor (120) to the connection ends (132) of the two detection conductors (130).

6. The water inlet detection device according to claim 1, wherein The bottom of the water storage tank (1111) is inclined, and the submerged end (131) is located at the lowest point of the inclined surface.

7. The water inlet detection device according to claim 1, wherein The housing (110) is provided with a slot (114), which is used to engage with an external structure to fix the housing (110). The number of the card slots (114) is two, the two card slots (114) are arranged side by side, and the opening directions of the two card slots (114) are opposite to each other.

8. The water inlet detection device according to claim 7, characterized in that, The slot (114) extends along the height direction of the housing (110), and the base plate (111) is disposed at one end of the height direction of the housing (110).

9. A battery pack, characterized by, The battery management system (200) is electrically connected with the connecting end (132) of the two detection conductors (130) for detecting the conductive state of the liquid in the water storage tank (1111).

10. An electrical device, characterized by The battery pack comprises the battery pack according to claim 9.

Images