A battery box and a pool cleaner

Abstract

The application provides a battery box and a pool cleaner, and relates to the technical field of battery boxes. The battery box provided by the application comprises a box body, a battery cell assembly, a first conductive piece and sealing glue. The box body is provided with a containing groove, the bottom of the containing groove is provided with a through hole, the through hole is communicated with the internal space of the box body, the containing groove is arranged on the inner surface or the outer surface of the box body, the battery cell assembly is located in the interior of the box body, the first conductive piece is fixed to the containing groove, the first end of the first conductive piece is located in the interior of the box body and is electrically connected with the battery cell assembly, the second end of the first conductive piece extends out of the box body through the through hole, and the sealing glue is filled in the containing groove and covers the through hole. The battery box provided by the application is used for power supply and can improve the sealing performance of the battery box.

Description

Technical Field

[0001] This application relates to the field of battery box technology, and more particularly to a battery box and a pool cleaning machine. Background Technology

[0002] In order for the energy storage module inside the battery box to connect to an external device so that the energy storage module can supply power to the external device, the battery box casing needs to have an opening. One end of the conductive component is connected to the energy storage module, and the other end extends through the opening to the outside of the casing to connect to the external device.

[0003] In related technologies, the wiring harness passes directly through the battery box wall, and substances from the external environment may enter the box through gaps in the wiring harness, resulting in poor sealing of the battery box. Utility Model Content

[0004] This application provides a battery box and a water tank cleaning machine that can improve the sealing performance of the battery box.

[0005] In a first aspect, this application provides a battery box, which includes a box body, a battery cell assembly, a first conductive element, and sealant. The box body has a receiving groove with a through hole at its bottom, the through hole connecting to the internal space of the box body; the receiving groove is located on the inner or outer surface of the box body; the battery cell assembly is located inside the box body; the first conductive element is fixed to the receiving groove, a first end of the first conductive element is located inside the box body and electrically connected to the battery cell assembly, and a second end of the first conductive element extends outward through the through hole; sealant fills the receiving groove and covers the through hole.

[0006] The battery box provided in this application has a first end of a first conductive element electrically connected to a battery cell assembly, and a second end of the first conductive element extending outward through a through-hole. This allows the first conductive element to connect the battery cell assembly to an external device, enabling the battery cell assembly to supply power to the external device. Sealant fills the receiving groove and covers the through-hole, sealing the through-hole and preventing substances from the external environment from entering the box through it. Therefore, the battery box provided in this application improves the sealing performance of the through-hole, thereby improving the overall sealing performance of the battery box.

[0007] In some implementations of this application, the first conductive element is a non-through conductive body; preferably, it is a solid conductive needle.

[0008] In this way, the first conductive element can block substances (such as water) in the external environment, making it difficult for substances in the external environment to pass through the first conductive element and enter the cavity, which helps to improve the sealing of the battery box.

[0009] In some implementations of this application, the battery box further includes a fixing plate, which covers the through hole and is used to fix the first conductive element.

[0010] In this way, the fixing plate is placed over the through hole, which helps to improve the sealing of the battery box. The first conductive component is fixed to the fixing plate, which helps to improve the ease of installation and stability of the first conductive component.

[0011] In some implementations of this application, the battery box further includes a seal that surrounds the through hole and, along the depth direction of the through hole, the surfaces of opposite sides of the seal abut against the bottom of the receiving groove and the fixing plate, respectively.

[0012] Preferably, the sealing element is a sealing ring.

[0013] In this way, the fixing plate seals the through hole through the sealing element, resulting in a good sealing effect.

[0014] In some implementations of this application, the fixing plate is a first circuit board, and the first conductive element is welded to the fixing plate.

[0015] In this way, the cost of the fixing plate is lower, and the sealing performance at the connection between the first conductive component and the fixing plate is better.

[0016] In some implementations of this application, the first conductive element is electrically connected to an external device via a connecting wire; the first end of the connecting wire is located inside the receiving groove, and the second end of the connecting wire extends outside the receiving groove; the first conductive element penetrates the fixing plate, and the second end of the first conductive element is connected to the first end of the connecting wire.

[0017] By having the first conductive element pass through the fixing plate and the connecting wire electrically connected to the second end of the first conductive element, the electrical connection between the connecting wire and the battery cell assembly is made easier to achieve, making the processing and manufacturing of the battery box more convenient.

[0018] In some implementations of this application, the first conductive element is electrically connected to an external device via a connecting wire; the first end of the connecting wire is located inside the receiving groove, and the second end of the connecting wire extends outside the receiving groove; the fixing plate is a first circuit board; the first circuit board includes a connecting pad, the connecting pad is connected to the second end of the first conductive element through a circuit on the first circuit board, and the connecting pad is connected to the first end of the connecting wire.

[0019] By connecting the connecting wires to the connecting pads to connect to the first conductive element, the spacing between the connecting wires and the circuit board is smaller, and the connecting wires and the circuit board are arranged more compactly, so that the depth of the receiving groove can be set smaller, which helps to improve the compactness of the structure.

[0020] In some implementations of this application, sealant covers the fixing plate.

[0021] In some implementations of this application, sealant is applied to the connection point (e.g., solder joint) between the first conductive element and the connecting wire.

[0022] In some implementations of this application, sealant covers the second end of the first conductive element.

[0023] In some implementations of this application, the sealant covers the second end of the first conductive element and extends at least 1 mm above the second end of the first conductive element.

[0024] In this way, the sealant can isolate the first conductive element from the external environment, making the electrical connection between the battery cell assembly and the external device more reliable. The sealant covers the second end of the conductive element and protrudes at least 1 mm above the second end, resulting in a better sealing effect between the connecting wire and the first conductive element. The sealant can effectively isolate substances in the external environment, making it difficult for substances in the external environment to come into contact with the fixing plate and the first conductive element.

[0025] In some implementations of this application, the box body has a blind hole, and the battery box also includes a connector, one end of which is connected to a fixing plate, and the other end of which is fitted into the blind hole so that the fixing plate is fixed to the box body.

[0026] By fixing the fixing plate to the box body using connectors, the stability of the fixing plate installation is improved. The box body has blind holes, and the connectors fit into these blind holes. One end of the blind hole is open for the connector to insert, while the other end is closed, which helps improve the sealing and strength of the box body.

[0027] In some implementations of this application, the battery box further includes a second circuit board disposed within the box body, a first end of the first conductive element fixed to the second circuit board and electrically connected to the second circuit board, and the circuit board electrically connected to the battery cell assembly.

[0028] In this way, on the one hand, the first end of the first conductive element can be fixed by the second circuit board to improve the installation stability of the first conductive element. On the other hand, when the distance between the cell assembly and the receiving slot is far, the first end of the first conductive element can be electrically connected to the cell assembly through the second circuit board. The first conductive element does not need to be set too long, which facilitates the arrangement of the first conductive element and helps to improve the rigidity of the first conductive element, thereby improving the reliability of the first conductive element.

[0029] In some implementations of this application, there are two first conductive elements, which are insulated from each other and electrically connected to the positive and negative terminals of the battery cell assembly, respectively.

[0030] In this way, both the positive and negative terminals of the battery cell assembly are connected to the external device through the first conductive element, which helps to improve the sealing of the battery box.

[0031] In some implementations of this application, the battery box further includes a functional device and a second conductive element. The functional device is located inside the box body; the second conductive element passes through a through hole, with its first end located inside the box body and electrically connected to the functional device, and its second end located in a receiving groove; and sealant also covers the second conductive element.

[0032] In this way, the second conductive element connects the functional device to the external device, and the sealant covering the second conductive element and the through hole through which the second conductive element is inserted helps to improve the sealing of the battery box.

[0033] In some implementations of this application, there are multiple through holes, and the first conductive element and the second conductive element are configured in a one-to-one correspondence with the through holes.

[0034] This allows for a smaller radial length of the through hole, which improves the sealing of the battery box and also enhances the reliability of the box.

[0035] Secondly, this application provides a pool cleaning machine, which includes the battery box provided in the first aspect of this application and the above-described implementation.

[0036] The pool cleaning machine provided in this application, including the battery box provided in the first aspect of this application and the above-described implementation, can achieve the same effect, namely, improving the sealing performance of the battery box.

[0037] In some implementations of this application, the pool cleaner includes a body and a battery box disposed within the body. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the battery box structure in some embodiments of this application;

[0040] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Box body; 11. Receiving groove; 12. Receiving cavity; 13. Blind hole; 2. Battery cell assembly; 31. Fixing plate; 311. Mounting hole; 32. First conductive component; 4. Sealing ring; 5. Connecting wire; 6. Second circuit board. Detailed Implementation

[0043] The technical solutions in this application will now be described clearly and in detail with reference to the accompanying drawings.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0045] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0046] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0047] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0048] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0049] This application provides a pool cleaning machine. When in operation, the pool cleaning machine is placed inside a pool and can filter and clean the water. Examples of pool cleaning machines include swimming pool cleaning robots, recreational pool cleaning robots, landscape pool cleaning robots, bathtub cleaning robots, or water storage tank cleaning robots. Recreational pool cleaning robots include wave pool cleaning robots, wading pool cleaning robots, and children's shallow water pool cleaning robots.

[0050] The pool cleaner provided in this application includes a battery box. Generally, the pool cleaner includes a body and a battery box disposed within the body. The battery box can power various systems of the pool cleaner. Exemplarily, in some embodiments of this application, the pool cleaner includes a power system, which includes an electric motor and wheels. The stator of the electric motor is fixed relative to the body, and the rotor of the electric motor is drively connected to the wheels to drive the wheels to rotate relative to the body. During the rotation of the wheels relative to the body, the wheels can drive the body to move within the pool. The battery box can power the electric motor. Exemplarily, in some embodiments of this application, the pool cleaner includes a cleaning system, which includes a water pump and a filter. The battery can power the water pump, enabling the water pump to drive water in the pool through the filter.

[0051] Please refer to Figure 1 and Figure 2 The battery box provided in this application embodiment includes a box body 1, a battery cell assembly 2, a first conductive element 32, and sealant. The box body 1 has a receiving groove 11 with a through hole at its bottom, the through hole connecting to the internal space of the box body 1. The receiving groove 11 is located on the inner or outer surface of the box body 1. The battery cell assembly 2 is located inside the box body 1. The first conductive element 32 is fixed to the fixing groove 11, with its first end located inside the box body 1 and electrically connected to the battery cell assembly 2, and its second end extending outward through the through hole. The sealant fills the receiving groove 11 and covers the through hole.

[0052] The battery box provided in this application embodiment has a first end of the first conductive element 32 electrically connected to the battery cell assembly 2, and a second end of the first conductive element 32 extending outward through the through hole into the box body 1. This allows the first conductive element 32 to connect the battery cell assembly 2 to an external device, enabling the battery cell assembly 2 to supply power to the external device. Sealant fills the receiving groove 11 and covers the through hole, sealing the through hole and preventing substances from the external environment from entering the box body 1 through it. Therefore, the sealing performance of the through hole is improved, thereby improving the overall sealing performance of the battery box.

[0053] Please refer to Figure 1 and Figure 2In this embodiment, the battery cell assembly 2 can be a secondary battery. After the secondary battery is discharged, the active materials can be activated by charging and it can continue to be used. The battery cell assembly 2 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., but this embodiment is not limited to these.

[0054] Please refer to Figure 1 and Figure 2 In this application embodiment, the number of battery cell components 2 can be one or at least two, and at least two battery cell components 2 can be connected in series, in parallel or in a mixed manner.

[0055] Please refer to Figure 1 and Figure 2 It is understood that in this embodiment of the application, the box body 1 forms a receiving cavity 12, which is the internal space of the box body 1. A through hole is formed on the side wall of the receiving cavity 12, and the depth direction of the through hole is the thickness direction of the side wall of the receiving cavity 12. The through hole connects the internal space of the box body 1 with the external space.

[0056] Please refer to Figure 1 and Figure 2 It is understood that, in this embodiment of the application, when the receiving groove 11 is formed on the outer surface of the box body 1, along the depth direction of the through hole, the receiving cavity 12 and the receiving groove 11 are respectively located on opposite sides of the through hole, the through hole connects the receiving cavity 12 and the receiving groove 11, one end face of the through hole is the inner surface of the box body 1, and the other end face is the bottom surface of the receiving groove 11. The depth direction of the through hole is shown in the first direction in the figure.

[0057] Please refer to Figure 1 and Figure 2 It is understood that, in this embodiment of the application, the second end of the first conductive element 32 is used to connect to an external device so that the external device is electrically connected to the battery cell assembly 2. The external device may be, for example, an electric motor of a power system, a water pump of a filtration system, or a central processing unit of a pool cleaner.

[0058] Please refer to Figure 1 and Figure 2 It is understood that in the embodiments of this application, the sealant is an insulating adhesive. In some embodiments of this application, the sealant can completely fill the receiving groove 11. This helps to improve the sealing performance of the through hole.

[0059] In some embodiments of this application, the battery box further includes a fixing plate 31, which covers the through hole in a sealed manner. The fixing plate 31 is used to fix the first conductive element 32. This arrangement, with the fixing plate 31 covering the through hole, improves the sealing performance of the battery box. The fixing plate 31 also improves the ease and stability of installing the first conductive element 32. Furthermore, the sealed arrangement of the fixing plate 31 over the through hole prevents sealant from easily entering the box body 1 through the through hole and affecting the components inside the box body 1, thus improving the reliability of the components inside the box body 1.

[0060] Please refer to Figure 1 and Figure 2 It should be explained that, in this embodiment, the fixing plate 31 can be disposed on the end of the through hole near the receiving cavity 12, or on the end of the through hole away from the receiving cavity 12. It can be understood that when the fixing plate 31 is disposed on the end of the through hole away from the internal space of the box body 1, the fixing plate 31 is located inside the receiving groove 11.

[0061] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the battery box further includes a sealing element 4. The sealing element 4 surrounds the through hole, and along the depth direction of the through hole, the surfaces of opposite sides of the sealing element 4 abut against the bottom of the receiving groove 11 and the fixing plate 31, respectively. The sealing element 4 is preferably a sealing ring. The sealing element 4 and the first conductive element can be sealed from the side or from the end face, which is not limited here. It is understood that the end face of the through hole near the fixing plate 31 and the surface of the fixing plate 31 near the through hole together clamp the sealing element 4, and the fixing plate 31 seals the through hole through the sealing element 4, resulting in a better sealing effect.

[0062] Please refer to Figure 1 and Figure 2 In some embodiments of this application, at least one of the bottoms of the fixing plate 31 and the receiving groove 11 is further provided with a sealing groove, and the sealing member 4 cooperates with the sealing groove. In some embodiments, the sealing groove may not be provided, and the sealing member 4 directly abuts against the bottom of the fixing plate and the receiving groove (where the through hole is located). This is beneficial to improving the stability of the installation of the sealing member 4, thereby improving the sealing performance of the fixing plate 31 to the through hole.

[0063] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the thickness direction of the fixing plate 31 may be the same as the depth direction of the through hole. This is beneficial to improving the compactness of the structure.

[0064] Please refer to Figure 1 and Figure 2It should be explained that, in this embodiment, the connection between the first conductive element 32 and the fixing plate 31 is sealed. Exemplarily, in some embodiments of this application, the first conductive element 32 can be welded to the fixing plate 31, or it can be integrally formed with the fixing plate 31. In this embodiment, the first conductive element 32 can be a rigid structure or a flexible structure.

[0065] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the fixing plate 31 is a first circuit board, and the first conductive element 32 is soldered to the fixing plate 31. With this structure, the fixing plate 31 has a lower cost, and the sealing at the connection between the first conductive element 32 and the fixing plate 31 is better. In some embodiments of this application, the first conductive element 32 can be a solid conductive needle.

[0066] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the first conductive element 32 is electrically connected to an external device via a connecting line 5. The first end of the connecting line 5 is located within the receiving groove 11, and the second end of the connecting line 5 extends outside the receiving groove 11 to connect with the external device. The first conductive element 32 penetrates the fixing plate 31, and the second end of the first conductive element 32 is connected to the first end of the connecting line 5. This structural configuration allows the first conductive element 32 to penetrate the fixing plate 31 and the connecting line 5 to be electrically connected to the second end of the first conductive element 32, making the electrical connection between the connecting line 5 and the battery cell assembly 2 easier to achieve, and facilitating the manufacturing of the battery box.

[0067] Please refer to Figure 1 and Figure 2 It is understood that, in this embodiment of the application, the first conductive element 32 penetrates the fixing plate 31 along the thickness direction of the fixing plate 31. Since the first conductive element 32 penetrates the fixing plate 31, that is, along the thickness direction of the fixing plate 31, the fixing plate 31 does not obstruct the second end of the first conductive element 32. The second end of the first conductive element 32 is exposed on the side of the fixing plate 31 away from the receiving cavity 12, allowing the connecting wire 5 to be easily connected to the second end of the second conductive element.

[0068] Please refer to Figure 1 and Figure 2 In this embodiment of the application, the electrical connection between the connecting line 5 and the second end of the first conductive element 32 can be implemented in various ways. For example, the second end of the first conductive element 32 can be soldered to the connecting line 5, or the second end of the first conductive element 32 can have a connecting hole formed therein, and the first end of the connecting line 5 can be inserted into the connecting hole.

[0069] Please refer to Figure 1 and Figure 2In some embodiments of this application, the connecting wire 5 includes a conductive wire and an insulating sleeve. A first end of the conductive wire is connected to a second end of the first conductive element 32, and the second end of the conductive wire extends outside the receiving groove 11 for connection to an external device. An insulating sleeve is fitted over the conductive wire, with its first end located within the receiving groove 11 and its second end extending along the conductive wire outside the receiving groove 11. Sealant covers the first end of the insulating sleeve. This isolates the conductive wire from the external environment, which helps improve the reliability of the electrical connection between the battery and the external device.

[0070] In some embodiments of this application, the first conductive element 32 is a non-through conductor; preferably, it is a solid conductive needle. It should be explained that the first conductive element 32 is a non-through conductor, meaning that the first end and the second end of the first conductive element 32 are not connected. This makes it difficult for substances at the second end of the first conductive element 32 to pass through its interior and reach the first end. In this way, the first conductive element 32 can block substances from entering the external environment, making it difficult for them to pass through and enter the receiving cavity, thus improving the sealing of the battery box. For example, if water from the external environment enters between the conductive wire and the insulating sleeve and flows along the conductive wire to the second end of the first conductive element 32, because the first conductive element 32 is a non-through conductor, it can block the water, making it difficult for the water to pass through and enter the receiving cavity 12, thereby improving the sealing of the battery box. It is understandable that the sealant fills the receiving groove 11 and covers the first conductive element 32. The sealant is tightly adhered to the outer surface of the first conductive element 32. The sealant can block water, making it difficult for water to flow along the outer surface of the first conductive element 32 into the receiving cavity 12. In addition, the first conductive element 32 is a non-through conductor, making it difficult for water to pass through the first conductive element 32 into the receiving cavity 12. Thus, when water flows along the conductive wire to the second end of the first conductive element 32, it is difficult for the water to continue flowing due to the blocking effect of the sealant and the first conductive element 32, resulting in good sealing of the battery box.

[0071] In this application, the first conductive element 32 can be a non-through conductive body in various forms. In some embodiments of this application, the first conductive element 32 can be a solid structure, preferably a solid conductive needle; in some embodiments of this application, the first conductive element 32 can also be a hollow structure, and the first conductive element 32 can form a closed cavity.

[0072] Please refer to Figure 1 and Figure 2In some embodiments of this application, the first conductive element 32 is electrically connected to an external device via a connecting line 5; the first end of the connecting line 5 is located within the receiving groove 11, and the second end of the connecting line 5 extends outside the receiving groove 11; the first circuit board includes a connecting pad, which is connected to the second end of the first conductive element 32 via a circuit on the first circuit board, and the connecting pad is connected to the first end of the connecting line 5. With this structure, the connecting line 5 is connected to the connecting pad to connect to the first conductive element 32, resulting in a smaller gap between the connecting line 5 and the circuit board, and a more compact arrangement of the connecting line 5 and the circuit board. This allows for a smaller depth in the receiving groove 11, improving the structural compactness. Furthermore, in some embodiments of this application, the first end of the conductive wire can be connected to the connecting pad.

[0073] Please refer to Figure 1 and Figure 2 In some embodiments of this application, a fixing plate 31 is disposed on the side of the through hole away from the receiving cavity 12. Along a direction perpendicular to the depth direction of the through hole, the length of the portion of the first conductive element 32 located within the receiving cavity 12 is less than the length of the through hole. The first end of the first conductive element 32 makes conductive contact with the device inside the housing 1 to electrically connect with the battery cell assembly 2. Thus, during the process of placing the fixing plate 31 over the through hole, the first conductive element 32 can be inserted into the through hole from the side away from the receiving cavity 12, and as the insertion process deepens, the first end of the first conductive element 32 gradually extends into the receiving cavity 12, making conductive contact between the first end of the first conductive element 32 and the device inside the receiving cavity 12. This makes the installation of the first conductive element 32 relatively convenient.

[0074] In some embodiments of this application, sealant covers the mounting plate 31. This sealant isolates the mounting plate 31 from the external environment, making the electrical connection between the battery cell assembly and external devices more reliable.

[0075] In some embodiments of this application, sealant is applied to the connection point (e.g., solder joint) between the first conductive element 32 and the connecting wire 5. This isolates the connection point between the first conductive element 32 and the connecting wire 5 from the external environment, which helps improve the reliability of the electrical connection between the battery and external devices.

[0076] In some embodiments of this application, the sealant covers the second end of the first conductive element 32 and extends at least 1 mm above the second end of the first conductive element 32. This results in a better sealing effect between the connecting wire 5 and the first conductive element 32, and the sealant can effectively isolate substances in the external environment, making it difficult for substances in the external environment to come into contact with the first conductive element 32.

[0077] Please refer to Figure 1 and Figure 2In some embodiments of this application, the battery box further includes a second circuit board 6, which is disposed within the box body 1. The first end of the first conductive element 32 is fixed to and electrically connected to the second circuit board 6, and the circuit board is electrically connected to the battery cell assembly 2. This structure allows for two advantages: firstly, the second circuit board 6 can be used to fix the first end of the first conductive element 32, improving the installation stability of the first conductive element 32; secondly, when the distance between the battery cell assembly 2 and the receiving slot 11 is relatively far, the first end of the first conductive element 32 can be electrically connected to the battery cell assembly 2 through the second circuit board 6. This eliminates the need for the first conductive element 32 to be excessively long, facilitating its arrangement and improving its rigidity, thereby enhancing its reliability.

[0078] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the thickness direction of the second circuit board 6 is perpendicular to the depth direction of the through hole. This facilitates the arrangement of the second circuit board 6 within the housing 1 and also facilitates the connection between the first conductive element 32 and the second circuit board 6.

[0079] Please refer to Figure 1 and Figure 2 In some embodiments of this application, there are two first conductive elements 32, which are insulated from each other and electrically connected to the positive and negative terminals of the battery cell assembly 2, respectively. In this way, both the positive and negative terminals of the battery cell assembly 2 are connected to external devices through the first conductive elements 32, which helps to improve the sealing of the battery box.

[0080] Please refer to Figure 1 and Figure 2 In some embodiments of this application, two first conductive elements 32 can be fixedly connected to the same fixing plate 31. In this way, the fixing plate 31 is fully utilized, which helps to improve the compactness of the structure.

[0081] Please refer to Figure 1 and Figure 2 In some embodiments of this application, there are two through holes, each corresponding to one of the two first conductive elements 32. This allows for a smaller radial length of the through holes, which improves the sealing performance of the battery box and enhances the reliability of the box body 1.

[0082] Please refer to Figure 1 and Figure 2In some embodiments of this application, the battery box further includes a functional device and a second conductive element. The functional device is located inside the box body 1; the second conductive element passes through a through hole, with its first end located inside the box body 1 and electrically connected to the functional device, and its second end extending outward through the through hole; sealant also covers the second conductive element. With this structure, the second conductive element enables the connection between the functional device and an external device, and the sealant covering the second conductive element and the through hole through which it passes improves the sealing performance of the battery box.

[0083] It should be explained that, in the embodiments of this application, functional devices include, for example, a battery management system (BMS) and a data acquisition device, which is used to collect voltage information, power information and temperature information of the battery cell assembly 2.

[0084] In some embodiments of this application, the second conductive element is fixed to the fixing plate 31. This improves the ease of installation and stability of the second conductive element.

[0085] In some implementations of this application, the second conductive element is a non-through conductor; preferably, it is a solid conductive needle. This helps to improve the sealing performance of the battery box.

[0086] Please refer to Figure 1 and Figure 2 It should be explained that, in this embodiment, the connection between the second conductive element and the fixing plate 31 is sealed. Exemplarily, in some embodiments of this application, the second conductive element can be welded to the fixing plate 31, or it can be integrally formed with the fixing plate 31. In this embodiment, the second conductive element can be a rigid structure or a flexible structure.

[0087] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the second conductive element is welded to the fixing plate 31. This structural configuration results in a lower cost for the fixing plate 31 and better sealing at the connection between the second conductive element and the fixing plate 31. In some embodiments of this application, the second conductive element can be a conductive pin.

[0088] Please refer to Figure 1 and Figure 2In some embodiments of this application, the second conductive element is connected to an external device via a transmission line. The first end of the transmission line is located within the receiving groove 11, and the second end extends outside the receiving groove 11 to connect with the external device. The second conductive element penetrates the fixing plate 31, and its second end is connected to the first end of the transmission line. This structural configuration allows the second conductive element to penetrate the fixing plate 31 and electrically connect the transmission line to the second end of the second conductive element, facilitating the electrical connection between the transmission line and the battery cell assembly 2 and simplifying the manufacturing of the battery box.

[0089] Please refer to Figure 1 and Figure 2 Generally, in the embodiments of this application, the second end of the second conductive element is welded to the transmission line.

[0090] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the transmission line includes a conductor wire and a protective sleeve. The protective sleeve is made of an insulating material. A first end of the conductor wire is connected to a second end of a second conductive element, and the second end of the conductor wire extends outside the receiving groove 11 for connection to an external device. The protective sleeve is fitted over the conductor wire, with its first end located inside the receiving groove 11 and its second end extending along the conductor wire outside the receiving groove 11. Sealant covers the first end of the protective sleeve. This isolates the conductor wire from the external environment, which helps improve the reliability of the electrical connection between the battery and the external device.

[0091] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the second conductive element is connected to an external device via a transmission line. The first end of the transmission line is located within the receiving groove 11, and the second end extends outside the receiving groove 11. The first circuit board includes conductive pads, which are connected to the second end of the second conductive element via circuitry on the first circuit board. The conductive pads are also connected to the first end of the transmission line. This structural configuration, where the transmission line is connected to the conductive pads to connect to the second conductive element, allows for a more compact arrangement of the transmission line and circuit board, enabling a smaller depth in the receiving groove 11 and improving structural compactness. Furthermore, in some embodiments of this application, the first end of the conductor wire can be connected to the conductive pads.

[0092] Please refer to Figure 1 and Figure 2In some embodiments of this application, a fixing plate 31 is disposed on the side of the through hole away from the receiving cavity 12. Along a direction perpendicular to the depth direction of the through hole, the length of the portion of the second conductive element located within the receiving cavity 12 is less than the length of the through hole. The first end of the second conductive element makes conductive contact with the device inside the housing 1 to electrically connect with the battery cell assembly 2. Thus, during the process of placing the fixing plate 31 over the through hole, the second conductive element can be inserted into the through hole from the side away from the receiving cavity 12, and as the insertion process deepens, the first end of the second conductive element gradually extends into the receiving cavity 12, making conductive contact between the first end of the second conductive element and the device inside the receiving cavity 12. This makes the installation of the second conductive element relatively convenient.

[0093] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the battery box further includes a second circuit board 6, which is disposed within the box body 1. The first end of the second conductive element is fixed to and electrically connected to the second circuit board 6, and the circuit board is electrically connected to the functional device. This structural configuration, where the first end of the second conductive element is electrically connected to the functional device via the second circuit board 6, is relatively convenient to implement.

[0094] Please refer to Figure 1 and Figure 2 In some embodiments of this application, there are multiple through holes, with the first conductive element 32 and the second conductive element corresponding to each through hole. This helps to reduce the radial length of the through holes, improves the sealing performance of the battery box, and also enhances the reliability of the box body 1.

[0095] Please refer to Figure 1 and Figure 2 In some embodiments of this application, there are multiple seals 4, and each seal 4 is provided in a one-to-one correspondence with a through hole. This is beneficial for improving the sealing performance of the battery.

[0096] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the housing 1 has a blind hole 13, and the battery box also includes a connector. One end of the connector is connected to the fixing plate 31, and the other end fits into the blind hole 13 to fix the fixing plate 31 to the housing 1. This structural configuration, where the fixing plate 31 and the housing 1 are fixed by the connector, improves the stability of the fixing plate 31 installation. The blind hole 13 in the housing 1, with the connector fitting into it, improves the sealing and strength of the housing 1. In some embodiments of this application, the blind hole 13 can be formed at the bottom of the receiving groove 11, facing the fixing plate 31, and the depth direction of the blind hole 13 can be the same as the depth direction of the through hole.

[0097] Please refer to Figure 1 and Figure 2In this application embodiment, the connector can be of various types. For example, it can be a screw or rivet. One end of the connector passes through the mounting hole 311 of the fixing plate 31, and the other end is fitted into the blind hole 13.

[0098] Please refer to Figure 1 and Figure 2 During the assembly of the battery box, the first conductive component 32, the second conductive component, the fixing plate 31, the connecting wire 5, and the transmission line can be assembled together first, and a sealing component 4 can be placed at the through hole. Then, the first conductive component 32 and the second conductive component are inserted into the corresponding sealing components 4. Next, the connector is installed so that the fixing plate 31 and the box body 1 press the sealing component 4 tightly. Finally, glue is poured into the receiving groove 11 to complete the installation. In the process of assembling the first conductive component 32, the second conductive component, the fixing plate 31, the connecting wire 5, and the transmission line, for example, the first conductive component 32 can be soldered to the circuit board first, and then the connecting wire 5 can be soldered to the first conductive wire. Alternatively, the second conductive component can be soldered to the circuit board first, and then the transmission line can be soldered to the second conductive wire.

[0099] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A battery box, characterized in that, include: The box body has a receiving groove, and the bottom of the receiving groove has a through hole that connects to the internal space of the box body; the receiving groove is located on the inner or outer surface of the box body. The battery cell assembly is located inside the housing; A first conductive element is fixed to the receiving groove. The first end of the first conductive element is located inside the box and is electrically connected to the battery cell assembly. The second end of the first conductive element extends out of the box through the through hole. Sealant is applied to fill the receiving groove and cover the through hole.

2. The battery box according to claim 1, characterized in that, The first conductive element is a non-through conductor.

3. The battery box according to claim 2, characterized in that, The first conductive element is a solid conductive needle.

4. The battery box according to claim 1, characterized in that, It also includes a fixing plate, which covers the through hole and is used to fix the first conductive element.

5. The battery box according to claim 4, characterized in that, The sealant covers the fixing plate.

6. The battery box according to claim 4, characterized in that, It also includes a seal that surrounds the through hole and, along the depth direction of the through hole, has opposite surfaces that abut against the bottom of the receiving groove and the fixing plate, respectively.

7. The battery box according to claim 6, characterized in that, The sealing element is a sealing ring.

8. The battery box according to claim 4, characterized in that, The fixing plate is a first circuit board, and the first conductive element is welded to the fixing plate.

9. The battery box according to claim 4, characterized in that, The first conductive element is electrically connected to an external device via a connecting wire; the first end of the connecting wire is located inside the receiving groove, and the second end of the connecting wire extends outside the receiving groove; The first conductive element penetrates the fixing plate, and the second end of the first conductive element is connected to the first end of the connecting line. Alternatively, the first conductive element is electrically connected to an external device via a connecting wire; the first end of the connecting wire is located inside the receiving groove, and the second end of the connecting wire extends outside the receiving groove; The fixing plate is the first circuit board; The first circuit board includes a connection pad, which is connected to the second end of the first conductive element through a circuit on the first circuit board, and the connection pad is connected to the first end of the connection line.

10. The battery box according to claim 1, characterized in that, The sealant covers the second end of the first conductive element and extends at least 1 mm above the second end of the first conductive element.

11. The battery box according to claim 4, characterized in that, The box body has a blind hole, and the battery box also includes a connector. One end of the connector is connected to the fixing plate, and the other end is fitted into the blind hole so that the fixing plate is fixed to the box body.

12. The battery box according to any one of claims 1 to 11, characterized in that, It also includes a second circuit board, which is disposed in the housing. The first end of the first conductive element is fixed to the second circuit board and electrically connected to the second circuit board. The circuit board is electrically connected to the battery cell assembly.

13. A pool cleaning machine, characterized in that, Includes the battery box as described in any one of claims 1 to 12.

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