Battery assembly and cleaning equipment

Abstract

The utility model discloses a battery assembly and cleaning equipment, and belongs to the technical field of cleaning equipment. The battery assembly comprises a battery pack, a first heat conduction piece, a TEC device and a battery compartment shell, the first heat conduction piece is arranged around the battery pack, the TEC device is attached to the first heat conduction piece, and the TEC device is used for controlling the temperature of the first heat conduction piece; the battery compartment shell is arranged outside the first heat conduction piece in a sleeving mode, a mounting hole is formed in the battery compartment shell, the TEC device is located in the mounting hole, and a sealing connecting sleeve is arranged between the TEC device and the hole wall of the mounting hole. In the scheme, the temperature of the battery pack is controlled in a mode that the TEC device is matched with the first heat conduction piece, the temperature control effect is good, the reliability is high, and the size of the battery assembly is reduced; and the cold end and the hot end of the TEC device are isolated by the sealing connecting sleeve, so that the negative influence of the temperature of one end, deviating from the first heat conduction piece, of the TEC device on the temperature of the battery pack is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of cleaning equipment, and specifically relates to a battery assembly and cleaning equipment. Background Art

[0002] Cleaning equipment greatly reduces the burden of household chores and is therefore becoming increasingly popular among families. Cleaning equipment is equipped with a battery pack, and the charging and discharging of the battery pack is significantly affected by the ambient temperature. Failure to control the temperature of the battery pack will affect the performance of the battery pack, and thus the performance of the cleaning equipment. Currently, there are various methods for controlling the temperature of battery packs on the market. For example, by placing the battery pack away from heat sources to reduce the impact of other components on the temperature of the battery pack, or by using air cooling or liquid cooling to cool the battery pack.

[0003] However, placing the battery pack in a location away from heat sources can only reduce the impact of the temperature of other components on the battery pack, but cannot control the temperature of the battery pack generated by its own discharge. In this way, when the discharge current of the battery pack is too high, it is still easy to cause the temperature of the battery pack to be too high, which can easily cause the cleaning equipment to produce over-temperature protection and affect the performance of the cleaning equipment; and for the solution of cooling by air cooling or liquid cooling, a larger space is required for the cooling air to pass through or for the arrangement of liquid cooling devices, which in turn increases the volume of the battery pack.

[0004] Therefore, existing temperature control methods for battery packs have the disadvantages of poor temperature control effect or causing the volume of the battery assembly to increase. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a battery assembly and cleaning equipment that can solve the problem in the related art that the temperature control method of the battery pack has poor temperature control effect or causes the volume of the battery assembly to increase.

[0006] In a first aspect, an embodiment of the present application provides a battery assembly, comprising:

[0007] Battery pack;

[0008] a first heat conducting member, the first heat conducting member being arranged around the battery pack;

[0009] a TEC device, the TEC device being attached to the first heat-conducting member and configured to control the temperature of the first heat-conducting member;

[0010] A battery compartment shell is provided, wherein the battery compartment shell is sleeved on the outside of the first heat conducting member, a mounting hole is provided on the battery compartment shell, the TEC device is located in the mounting hole, and a sealing connection sleeve is provided between the TEC device and the hole wall of the mounting hole.

[0011] In a second aspect, an embodiment of the present application further provides a cleaning device, comprising a driving assembly and the above-mentioned battery assembly, wherein the battery assembly is electrically connected to the driving assembly.

[0012] In the embodiment of the present application, the first heat conductor can conduct heat between the TEC device and the battery pack, allowing the TEC device to control the temperature of the battery pack. Due to the small size of the TEC device, the TEC device can be easily integrated into the interior of the battery assembly, thereby reducing the size of the battery assembly. Moreover, because the TEC device determines heating or cooling based on the positive or negative current, the temperature control process does not require refrigerant, resulting in low energy consumption and effectively reducing the temperature control cost of the battery assembly. Furthermore, using the TEC device to control the temperature of the battery pack provides precise temperature control, fast response, good temperature control effect, and high reliability.

[0013] In addition, since the first heat-conducting member is arranged around the battery pack, the temperature uniformity of the battery pack can be effectively improved, thereby improving the temperature control effect of the battery pack. Moreover, by sealing the gap between the TEC device and the hole wall of the mounting hole through the sealing connecting sleeve, the cold end and the hot end of the TEC device can be isolated, thereby preventing the temperature of the end of the TEC device away from the first heat-conducting member from negatively affecting the temperature of the battery pack, thereby further improving the temperature control effect of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the exploded views of the battery assembly disclosed in the embodiments of the present application;

[0015] Figure 2 is a diagram showing the connection relationship between the first heat conducting member and the TEC device disclosed in the embodiment of the present application;

[0016] Figure 3 This is the second exploded view of the battery assembly disclosed in the embodiment of the present application (hiding the battery pack, thermal pad and a first thermal conductive plate);

[0017] Figure 4 This is a diagram showing the connection between the battery compartment housing and the sealing connection sleeve disclosed in the embodiment of the present application;

[0018] Figure 5 is a diagram showing the connection relationship between the sealing connection sleeve and the TEC device disclosed in the embodiment of the present application;

[0019] Figure 6 This is one of the three-dimensional views of the sealing connection sleeve disclosed in the embodiment of the present application;

[0020] Figure 7 Schematic diagram of the structure of the inner wall of the battery compartment housing disclosed in an embodiment of the present application;

[0021] Figure 8 is a three-dimensional diagram of a battery assembly disclosed in an embodiment of the present application;

[0022] Figure 9 is a schematic diagram of a partial structure of a battery assembly disclosed in an embodiment of the present application;

[0023] Figure 10 This is the second stereoscopic view of the sealing connection sleeve disclosed in the embodiment of the present application.

[0024] Description of reference numerals:

[0025] 100 - battery pack; 200 - first heat conducting member; 210 - heat conducting plate; 211 - connection portion; 300 - TEC device;

[0026] 310-cable; 311-positive cable; 312-negative cable; 400-battery compartment housing; 410-mounting hole;

[0027] 420-wire trough; 430-connecting column; 500-sealing connecting sleeve; 510-annular slot; 520-through hole;

[0028] 600-thermal pad; 610-thermal pad; 700-second thermal conductive member; 710-boss; 800-top plate;

[0029] 900-base plate. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0031] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0032] The battery assembly and cleaning equipment provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0033] refer to Figure 1-10 A battery assembly provided in an embodiment of the present application may include a battery pack 100, a first heat conducting member 200, a TEC device 300 and a battery compartment housing 400.

[0034] The first heat conducting member 200 may be disposed around the battery pack 100 , the TEC device 300 may be attached to the first heat conducting member 200 , and the TEC device 300 may be used to control the temperature of the first heat conducting member 200 .

[0035] Here, the first heat conducting member 200 can conduct heat between the TEC device 300 and the battery pack 100, so that the TEC device 300 can control the temperature of the battery pack 100. In addition, due to the small size of the TEC device 300, the TEC device 300 can be easily integrated into the interior of the battery pack, thereby reducing the volume of the battery pack. Moreover, because the TEC device 300 determines heating or cooling by the positive or negative current, the temperature control process does not require refrigerant, and energy consumption is low, which can effectively reduce the temperature control cost of the battery pack. Moreover, the use of the TEC device 300 to control the temperature of the battery pack 100 has precise temperature control, fast response speed, good temperature control effect, and high reliability. At the same time, because the first heat conducting member 200 is arranged around the battery pack 100, it can effectively improve the temperature uniformity of the battery pack 100, thereby improving the temperature control effect of the battery pack 100.

[0036] It should be noted that the TEC device 300 (Thermo Electric Cooler) is a semiconductor or solid-state device that utilizes the Peltier effect to generate heating and cooling. Based on thermoelectric cooling technology used in electronic thermal management, it uses a direct current to create a temperature difference at the interface between two dissimilar materials, thereby achieving both cooling and heating functions. Therefore, the TEC device 300 can be used to control the temperature of the battery pack 100. Specifically, the operating current of the TEC device 300 can be controlled based on the internal temperature of the battery pack 100 to ensure that the battery pack 100 operates within a normal temperature range.

[0037] In addition, the battery compartment housing 400 can be mounted on the outside of the first heat conducting member 200. The battery compartment housing 400 can be provided with a mounting hole 410. The TEC device 300 can be located within the mounting hole 410. A sealing connection sleeve 500 can be provided between the TEC device 300 and the wall of the mounting hole 410. In this way, the sealing connection sleeve 500 seals the gap between the TEC device 300 and the wall of the mounting hole 410, isolating the cold end and the hot end of the TEC device 300. This can prevent the temperature of the end of the TEC device 300 facing away from the first heat conducting member 200 from negatively affecting the temperature of the battery pack 100, thereby further improving the temperature control effect of the battery pack 100.

[0038] In an optional embodiment of the present application, an annular groove 510 can be provided on the sealing connection sleeve 500, and the battery compartment shell 400 can be snapped into the annular groove 510. In this way, on the one hand, the sealing connection sleeve 500 can be fixed on the battery compartment shell 400, and then the TEC device 300 can be fixed on the battery compartment shell 400. On the other hand, the sealing between the sealing connection sleeve 500 and the hole wall of the mounting hole 410 can also be improved, thereby further avoiding the negative impact on the temperature of the battery pack 100 caused by the end of the TEC device 300 that is away from the first heat conductor 200.

[0039] In other embodiments, the annular groove 510 may not be provided on the sealing connection sleeve 500 , and the sealing connection sleeve 500 may only be clamped between the TEC device 300 and the wall of the mounting hole 410 .

[0040] In an optional embodiment, a wiring groove 420 may be provided on the battery compartment housing 400, and a through hole 520 may be provided on the sealing connection sleeve 500. The through hole 520 may be used to allow the cable 310 of the TEC device 300 to pass through. One end of the wiring groove 420 may be located on the wall of the mounting hole 410. The wiring groove 420 may be arranged opposite the through hole 520. In this way, the wiring groove 420 can be connected to the through hole 520, so that the cable 310 can extend into and out of the wiring groove 420, thereby facilitating the arrangement of the cable 310. This also helps to improve the sealing between the TEC device 300 and the sealing connection sleeve 500, as well as the sealing between the sealing connection sleeve 500 and the wall of the mounting hole 410. Here, the notch of the wiring groove 420 may face the first heat conducting member 200, or the notch of the wiring groove 420 may face away from the first heat conducting member 200. In this embodiment, the notch of the wiring groove 420 can be oriented toward the first heat conductive member 200, so that the cable 310 can be inserted into the gap between the battery compartment housing 400 and the first heat conductive member 200 and pass through the top plate 800 or the bottom plate 900 described below, thereby avoiding squeezing of the cable 310 and extending the service life of the cable 310.

[0041] In other embodiments, the wiring groove 420 may not be provided on the battery compartment housing 400 , and the through hole 520 may not be provided on the sealing connection sleeve 500 . Specifically, the cable 310 of the TEC device 300 may directly pass through the inner hole of the sealing connection sleeve 500 .

[0042] Optionally, the cable 310 may be sealed to the wall of the through hole 520 by means of a sealant, thereby further improving the sealing performance of the connection between the TEC device 300 and the sealing connection sleeve 500. Of course, the cable 310 may also be sealed to the wall of the through hole 520 without the sealant. Specifically, the cable 310 may pass directly through the through hole 520.

[0043] In this embodiment, the cable 310 may include a positive cable 311 and a negative cable 312, two through holes 520 may be provided on the sealing connection sleeve 500, and two wiring grooves 420 may be provided on the battery compartment shell 400. The two wiring grooves 420 may be opposite to the two through holes 520 respectively, and the ends of the positive cable 311 and the negative cable 312 facing away from the TEC device 300 may respectively pass through the two through holes 520 and extend into the two wiring grooves 420.

[0044] In an optional embodiment of the present application, the battery assembly may further include a second heat-conducting member 700, which is connected to the battery compartment housing 400. The second heat-conducting member 700 can be fitted with the end of the TEC device 300 facing away from the first heat-conducting member 200. In this way, the heat of the end of the TEC device 300 facing away from the first heat-conducting member 200 can be dissipated through the second heat-conducting member 700, and the end of the TEC device 300 facing away from the first heat-conducting member 200 can be prevented from contacting the air, thereby preventing condensation from forming on the end of the TEC facing away from the first heat-conducting member 200.

[0045] In other embodiments, the battery assembly may not include the second heat conducting member 700 .

[0046] Optionally, the ends of the sealing sleeve 500 may form an interference fit with the first thermal conductor 200 and the second thermal conductor 700, respectively. This improves the seal between the ends of the sealing sleeve 500 and the first thermal conductor 200 and the second thermal conductor 700, thereby ensuring that the ends of the TEC device 300 are not exposed to the outside air, thereby further preventing condensation from forming on the TEC device 300. Of course, the ends of the sealing sleeve 500 do not need to form an interference fit with the first thermal conductor 200 and the second thermal conductor 700.

[0047] Further optionally, both ends of the sealing sleeve 500 protrude from the TEC device 300. Specifically, the end of the sealing sleeve 500 facing away from the battery pack 100 protrudes from the TEC device 300, and the end of the sealing sleeve 500 protrudes from the TEC device 300 near the battery pack 100. That is, the thickness of the sealing sleeve 500 in the direction from the first thermal conductor 200 to the battery pack 100 is greater than the thickness of the TEC device 300 in the direction from the first thermal conductor 200 to the battery pack 100. In this way, the sealing sleeve 500 can adapt to the gaps between the two ends of the TEC device 300 and the first thermal conductor 200 and the second thermal conductor 700, respectively, so that the sealing sleeve 500 can achieve an interference fit with the first thermal conductor 200 and the second thermal conductor 700.

[0048] In this embodiment, the sealing connection sleeve 500 may be a silicone sleeve. The compressibility of silicone can be utilized to ensure that the sealing connection sleeve 500 can form an interference fit with the first heat conducting member 200 and the second heat conducting member 700. Of course, the sealing connection sleeve 500 may be made of other elastic materials, or it may be made of a non-elastic material.

[0049] In an optional embodiment, a boss 710 may be provided on the side of the second heat-conducting member 700 facing the TEC device 300. The boss 710 may extend into the inner hole of the sealing connection sleeve 500 and may mate with the end of the TEC device 300 facing away from the first heat-conducting member 200. In this way, the boss 710 may mate with the end of the TEC device 300 facing away from the first heat-conducting member 200, thereby improving the heat conduction effect.

[0050] Of course, the boss 710 may not be provided on the side of the second heat conducting member 700 facing the TEC device 300 .

[0051] In an optional embodiment, the battery assembly may include at least two TEC devices 300 and at least two second thermally conductive members 700. The TEC devices 300 may be spaced apart circumferentially around the first thermally conductive member 200, and the second thermally conductive members 700 may be in contact with one end of each TEC device 300 facing away from the first thermally conductive member 200. In this manner, using at least two TEC devices 300 to control the temperature of the battery pack 100 facilitates rapid temperature control of the battery pack 100 and improves temperature uniformity within the battery pack 100. Furthermore, it effectively reduces the load on each TEC device 300, thereby reducing power consumption.

[0052] In other embodiments, the battery assembly may also include only one TEC device 300 and one second heat conducting member 700 .

[0053] In this embodiment, the battery assembly may include two TEC devices 300 and two second heat conducting members 700 . The two TEC devices 300 may be located on opposite sides of the battery pack 100 , which is beneficial for improving the temperature uniformity of the battery pack 100 .

[0054] Optionally, the battery compartment housing 400 may be provided with a connecting post 430, and the second heat-conducting member 700 may be connected to the connecting post 430 by a screw. In order to improve the stability of the connection between the second heat-conducting member 700 and the battery compartment housing 400, the battery compartment housing 400 may be provided with a plurality of connecting posts 430, and the second heat-conducting member 700 may be provided with a plurality of connecting holes. The plurality of connecting holes may correspond one-to-one with the plurality of connecting posts 430, and the screws may pass through the connecting holes and connect with the connecting posts 430 to connect the second heat-conducting member 700 to the battery compartment housing 400. In some embodiments, the battery compartment housing 400 may have a rectangular parallelepiped structure, the second heat-conducting member 700 may have a plate-like structure, and the four corners of the second heat-conducting member 700 may be provided with connecting holes. The battery compartment housing 400 may also be provided with four connecting posts 430, and the positions of the connecting posts 430 correspond to the positions of the connecting holes.

[0055] Further optionally, the second thermally conductive member 700 can be connected to the end of the TEC device 300 that faces away from the first thermally conductive member 200 via a second thermally conductive paste. Before connecting the second thermally conductive member 700 to the connecting post 430, the second thermally conductive member 700 can be connected to the end of the TEC device 300 that faces away from the first thermally conductive member 200 via the second thermally conductive paste. In this way, the second thermally conductive paste can pre-fix the second thermally conductive member 700, thereby facilitating the connection between the second thermally conductive member 700 and the battery compartment housing 400. It should be noted that the second thermally conductive paste can be applied to the end of the TEC device 300 that faces away from the first thermally conductive member 200, and the boss 710 described above can be in contact with the second thermally conductive paste.

[0056] In some embodiments, the battery assembly may further include a top plate 800 and a bottom plate 900. The top plate 800 and the bottom plate 900 may be respectively covered on the top and bottom of the battery compartment housing 400, and both the top plate 800 and the bottom plate 900 may be connected to the battery compartment housing 400 to form a sealed chamber to seal the battery pack 100. In the direction from the top plate 800 to the bottom plate 900, the ends of the first heat conductive member 200 may respectively extend to the ends of the battery compartment housing 400. In this way, the top plate 800 and the bottom plate 900 can fix the first heat conductive member 200, thereby improving the fixation of the battery pack 100 and preventing the first heat conductive member 200 and the battery pack 100 from shaking during use of the cleaning device. Of course, in the direction from the top plate 800 to the bottom plate 900, the ends of the first heat conductive member 200 may not extend to the ends of the battery compartment housing 400. In this embodiment, the bottom plate 900 and the battery compartment housing 400 may be an integrated structure to reduce the number of connection structures and simplify the assembly operation of the battery assembly.

[0057] Here, each second heat-conducting member 700 can be distributed along the circumference of the battery compartment shell 400, which is beneficial to improving the temperature uniformity of the battery assembly, and each second heat-conducting member 700 is connected to the outer wall of the battery compartment shell 400, that is, each second heat-conducting member 700 is located inside the battery compartment shell 400, which is beneficial to conduct the heat of the TEC device 300 to the outside of the battery compartment shell 400.

[0058] In an optional embodiment, the first heat-conducting member 200 may be a heat-conducting copper plate, and the second heat-conducting member 700 may be a heat-conducting aluminum plate. Since copper has good thermal conductivity and uniformity, setting the first heat-conducting member 200 as a heat-conducting copper plate can effectively improve the thermal conductivity and temperature uniformity of the first heat-conducting member 200, thereby further improving the temperature control effect and the temperature uniformity of the battery pack 100. Since aluminum is light and low in cost, setting the second heat-conducting member 700 as a heat-conducting aluminum plate can reduce the weight and cost of the battery assembly.

[0059] Of course, the first heat conducting member 200 and the second heat conducting member 700 may also be heat conducting copper plates or heat conducting aluminum plates. Alternatively, the first heat conducting member 200 and the second heat conducting member 700 may also be heat conducting silver plates or heat conducting gold plates.

[0060] In an optional embodiment, the battery assembly may further include a thermal pad 600, which may be located between the battery pack 100 and the first thermally conductive member 200, and the thermal pad 600 may be attached to the battery pack 100 and the first thermally conductive member 200, respectively. In this way, the thermal pad 600 can be used to conduct heat between the battery pack 100 and the first thermally conductive member 200. The compressibility of the thermal pad 600 can also be used to ensure that the first thermally conductive member 200 can be adapted to the battery pack 100 even when there are size deviations, thereby increasing the heat transfer area between the first thermally conductive member 200 and the battery pack 100, thereby improving the temperature control effect. Here, the thermal pad 600 can be made of materials such as thermally conductive rubber or thermally conductive silicone.

[0061] Optionally, the thermal pad 600 may be disposed around the battery pack 100 , which is beneficial for improving the temperature uniformity of the battery pack 100 .

[0062] Of course, the battery assembly may not include the thermal pad 600 .

[0063] In some embodiments, the thermal pad 600 may include at least two thermal pads 610 , each of which may be connected to form a ring structure to surround the battery pack 100 . This facilitates assembly of the thermal pad 600 . The thermal pads 610 may be connected by a sealant, or they may simply be in contact with each other.

[0064] In this embodiment, the thermal pad 600 may include two thermal pads 610 , each of which may be in a U-shaped structure, and the two thermal pads 610 are connected to form a ring structure.

[0065] In an optional embodiment, the first heat conducting member 200 may include at least two heat conducting plates 210, and the heat conducting plates 210 may be connected to form an annular structure, which facilitates the disassembly and assembly of the first heat conducting member 200. Of course, the first heat conducting member 200 may also be an integrated annular structure.

[0066] Optionally, the TEC device 300 can be connected to the heat conducting plate 210 via a first thermal conductive paste. This can improve the stability of the TEC device 300. Moreover, the viscosity of the first thermal conductive paste can be used to pre-fix the TEC device 300 when installing the TEC device 300, thereby improving the convenience of installing the TEC device 300.

[0067] Further optionally, the heat conducting plate 210 may be provided with a connecting portion 211 , which may protrude away from the battery pack 100 , and the connecting portions 211 of two adjacent heat conducting plates 210 may be connected by a fixing member, thereby facilitating the assembly of the first heat conducting member 200 .

[0068] Of course, the connection portion 211 may not be provided on the heat conducting plate 210 , and two adjacent heat conducting plates 210 may be bonded or welded.

[0069] Based on the battery assembly provided in the embodiments of the present application, the embodiments of the present application also provide a cleaning device. The cleaning device may include a driving assembly and the battery assembly described in any of the above embodiments. The battery assembly can be electrically connected to the driving assembly to power the driving assembly to ensure that the cleaning device can perform cleaning work.

[0070] Here, the driving component may be a motor or other driving components.

[0071] It should be noted that the cleaning device may be a floor scrubber. Of course, the cleaning device may also be other devices capable of performing cleaning work, such as a sweeping robot, a vacuum cleaner, and the like.

[0072] The beneficial effects achieved by the cleaning device provided in the embodiment of the present application are consistent with the beneficial effects achieved by the battery assembly provided in the embodiment of the present application, and will not be repeated here.

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A battery assembly, characterized in that: include: Battery Pack (100); a first heat conducting member (200), the first heat conducting member (200) being arranged around the battery pack (100); A TEC device (300), the TEC device (300) being attached to the first heat conducting member (200), and the TEC device (300) being used to control the temperature of the first heat conducting member (200); A battery compartment housing (400) is provided, wherein the battery compartment housing (400) is sleeved outside the first heat conducting member (200), a mounting hole (410) is provided on the battery compartment housing (400), the TEC device (300) is located in the mounting hole (410), and a sealing connection sleeve (500) is provided between the TEC device (300) and the hole wall of the mounting hole (410).

2. The battery assembly according to claim 1, wherein: An annular clamping groove (510) is provided on the sealing connection sleeve (500), and the battery compartment housing (400) is clamped to the annular clamping groove (510).

3. The battery assembly according to claim 1, wherein: The battery compartment housing (400) is provided with a wiring groove (420), the sealing connection sleeve (500) is provided with a through hole (520) for the cable (310) of the TEC device (300) to pass through, and the cable (310) is sealed and connected to the hole wall of the through hole (520) by means of a sealant, and one end of the wiring groove (420) is located on the hole wall of the mounting hole (410) and is arranged opposite to the through hole (520).

4. The battery assembly according to claim 1, wherein: The battery assembly further comprises a second heat-conducting member (700), the second heat-conducting member (700) being in contact with an end of the TEC device (300) facing away from the first heat-conducting member (200), the second heat-conducting member (700) being connected to the battery compartment housing (400), and the two ends of the sealing connection sleeve (500) being interference-fitted with the first heat-conducting member (200) and the second heat-conducting member (700), respectively.

5. The battery assembly according to claim 4, characterized in that A boss (710) is provided on a side of the second heat-conducting member (700) facing the TEC device (300), and the boss (710) can extend into the inner hole of the sealing connection sleeve (500) and fit with an end of the TEC device (300) facing away from the first heat-conducting member (200).

6. The battery assembly according to claim 4, characterized in that The battery assembly comprises at least two TEC devices (300) and at least two second heat-conducting members (700), wherein the TEC devices (300) are spaced apart along the circumference of the first heat-conducting member (200), and the second heat-conducting members (700) are respectively attached to one end of the TEC device (300) facing away from the first heat-conducting member (200); The battery assembly further includes a top plate (800) and a bottom plate (900), wherein the top plate (800) and the bottom plate (900) respectively cover the top and bottom of the battery compartment shell (400) and are connected to the battery compartment shell (400), and in the direction from the top plate (800) to the bottom plate (900), the two ends of the first heat conducting member (200) respectively extend to the two ends of the battery compartment shell (400), and each of the second heat conducting members (700) is distributed along the circumference of the battery compartment shell (400) and is connected to the outer wall of the battery compartment shell (400).

7. The battery assembly according to claim 4, characterized in that The first heat-conducting member (200) is a heat-conducting copper plate, and the second heat-conducting member (700) is a heat-conducting aluminum plate.

8. The battery assembly according to claim 1, wherein: The battery assembly further comprises a thermal pad (600), the thermal pad (600) being located between the battery pack (100) and the first thermal conductive member (200), and the thermal pad (600) being respectively attached to the battery pack (100) and the first thermal conductive member (200).

9. The battery assembly according to claim 1, wherein: The first heat conducting member (200) comprises at least two heat conducting plates (210), the heat conducting plates (210) are connected to form a ring structure, and the TEC device (300) is connected to the heat conducting plates (210) via a first heat conducting paste; The heat conducting plate (210) is provided with a connecting portion (211), the connecting portion (211) protruding away from the battery pack (100), and the connecting portions (211) of two adjacent heat conducting plates (210) are connected via a fixing member.

10. A cleaning device, characterized in that: It comprises a driving assembly and a battery assembly according to any one of claims 1 to 9, wherein the battery assembly is electrically connected to the driving assembly.

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