Cable connection structure and energy storage device

Abstract

This application discloses a cable connection structure and an energy storage device, relating to the field of energy storage device technology, to solve the problem of large space occupation of existing waterproof terminals. The cable connection structure provided in this application is used for installation on a blocking component of an energy storage device. The cable connection structure includes a protective component, which is disposed outside the blocking component and used for a sealed connection with the blocking component. The protective component has multiple receiving holes, each for different cable structures to pass through, allowing the cable structures to penetrate into the interior of the blocking component, and the protective component is used for a sealed connection with the cable structures. A wiring component is disposed inside the blocking component and used for electrically connecting the cable structures penetrating inside the blocking component to the electrical components within the blocking component. This application achieves the connection of multiple cable structures to internal electrical components through the multiple receiving holes of the protective component, thereby saving space occupied by the cable connection structure.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, specifically to a cable connection structure and an energy storage device. Background Technology

[0002] For most energy storage devices, in order to achieve energy exchange between the energy storage device and an external power source or load, and to ensure the normal charging and discharging of the device, it is necessary to electrically connect the internal cables of the energy storage device to the external power source or load.

[0003] However, each outgoing line in existing energy storage devices needs to be equipped with a separate waterproof terminal. When the number of outgoing lines is large, i.e. more than two, it will inevitably lead to a significant increase in the space occupied, which will have a significant impact on the compactness requirements of small energy storage devices in design. Utility Model Content

[0004] This application provides a cable connection structure and energy storage device that can solve the problem of large space occupation of existing waterproof terminals.

[0005] To achieve the above objectives, in a first aspect, the cable connection structure provided in this application is used to connect the cable structures on both sides of the blocking member, and the cable connection structure includes:

[0006] A protective component is disposed on one side of the blocking component and sealed to the blocking component. The protective component has multiple receiving holes, through which the cable structure passes and is sealed to the protective component.

[0007] A wiring assembly is disposed on the side of the barrier away from the protective assembly, and the wiring assembly includes a conductive element that is electrically connected to the cable structure.

[0008] In some embodiments of this application, the protective component includes:

[0009] A protective cover is installed on one side of the blocking component, and multiple receiving holes are opened on the protective cover;

[0010] Multiple waterproof terminals are connected to the protective cover, and each waterproof terminal is located in a different receiving hole. Each waterproof terminal has a wire through hole for the corresponding cable structure to pass through, and the waterproof terminal is used to seal the connection with the corresponding cable structure.

[0011] In some embodiments of this application, the protective component further includes:

[0012] A seal is provided between the protective cover and the barrier to seal the connection between them.

[0013] In some embodiments of this application, the seal is a sealing ring, and a sealing groove is provided on the end face of the protective cover facing the blocking member. The seal is disposed in the sealing groove and at least partially protrudes from the sealing groove.

[0014] In some embodiments of this application, the wiring assembly further includes an insulating base on which conductive elements are disposed.

[0015] In some embodiments of this application, the insulating base includes a main body and a connecting portion disposed on the outer periphery of the main body. The connecting portion is connected to the side of the blocking member away from the protective assembly. The main body has a mounting groove with an opening facing the protective assembly, and a conductive element is disposed in the mounting groove.

[0016] In some embodiments of this application, the conductive element includes a conductive busbar, at least a portion of which is located within a mounting groove and is used for electrical connection with a cable structure, and at least another portion of which extends outside the main body and is used for electrical connection with an electrical component.

[0017] In some embodiments of this application, the conductive bus includes a first part and a second part connected together. The first part is bent relative to the second part. A positioning groove is provided at the bottom of the mounting groove. The first part is disposed in the positioning groove and connected to the main body. A through groove is provided at the bottom of the positioning groove, which passes through the main body. The second part extends to the outside of the main body through the through groove.

[0018] In some embodiments of this application, the insulating base further includes a protrusion located on the side of the main body opposite to the protective assembly, a through groove passing through the protrusion, and a second portion extending through the through groove to the outside of the protrusion.

[0019] In some embodiments of this application, the main body portion passes through the blocking member at one end facing the protective component and extends into the interior of the protective component.

[0020] Secondly, the energy storage devices provided in this application include:

[0021] Box;

[0022] Electrical components are housed inside the enclosure; and,

[0023] As described in any of the above technical solutions, the cable connection structure has a blocking element configured as a side panel of the enclosure.

[0024] In some embodiments of this application, the side plate has through holes and windows, and the energy storage device further includes:

[0025] The network port module is mounted on the side panel and exposed to the outside of the enclosure through a window.

[0026] The wiring assembly is located at the through hole, and the protective assembly covers the outer periphery of both the through hole and the window; at least one receiving hole is used to allow the cable structure to pass through and to be electrically connected to the conductive element of the wiring assembly; at least another receiving hole is used to allow the cable structure to pass through and to be electrically connected to the network port module.

[0027] The above-mentioned technical solution of this application has at least the following beneficial effects:

[0028] In this technical solution, the cable connection structure is integrated and installed on the blocking component. Multiple cables can pass through corresponding receiving holes on the protective component and then uniformly enter the side of the blocking component away from the protective component to connect with the conductive element. This avoids the need for a separate waterproof structure and its associated installation space for each cable, effectively saving space occupied by the cable connection structure. Specifically, by reducing the use of a separate waterproof structure and its space occupation, the entire energy storage device can be made smaller. For small energy storage devices, the compact design facilitates installation and use, for example, making it easier to place in space-constrained locations. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0030] Figure 1 This is a schematic diagram of the installation state of the cable connection structure in the embodiments of this application;

[0031] Figure 2 This is an exploded view of the cable connection structure in an embodiment of this application;

[0032] Figure 3 This is a perspective view of the protective cover in the cable connection structure in the embodiments of this application;

[0033] Figure 4 This is a perspective view of the wiring assembly in the cable connection structure in the embodiments of this application from one viewpoint;

[0034] Figure 5 This is a perspective view of the conductive elements in the cable connection structure in the embodiments of this application;

[0035] Figure 6 This is a perspective view of the insulating base in the cable connection structure in the embodiments of this application;

[0036] Figure 7 This is a perspective view of the wiring assembly in the cable connection structure in the embodiments of this application from another angle;

[0037] Figure 8 This is a side view of the energy storage device in an embodiment of this application;

[0038] Figure 9 This is a side view of the energy storage device in this embodiment when a protective cover is installed on its side plate.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1-Protective component; 11-Accommodation hole; 12-Protective cover; 121-Sealing groove; 13-Waterproof terminal; 131-Wire hole; 14-Seal; 141-Sealing ring; 2-Wiring assembly; 21-Insulating base; 211-Main body; 2111-Mounting groove; 2112-Positioning groove; 2113-Through groove; 2114-Third connection hole; 2115-Block; 212-Connecting part; 2121-First connection hole; 213-Protrusion; 22-Conductive element; 221-Conductive busbar; 2211-First part; 2212-Second part; 2213-Second connection hole; 10-Box; 10a-Blocking element; 101-Through hole; 102-Window; 103-Network module; 20-Fixing base. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] This application provides a cable connection structure and an energy storage device, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0046] For most energy storage devices, in order to achieve energy exchange between the energy storage device and an external power source or load, and to ensure the normal charging and discharging of the device, it is necessary to electrically connect the internal cables of the energy storage device to the external power source or load.

[0047] However, each outgoing line in existing energy storage devices needs to be equipped with a separate waterproof terminal. When the number of outgoing lines is large, i.e. more than two, it will inevitably lead to a significant increase in the space occupied, which will have a significant impact on the compactness requirements of small energy storage devices in design.

[0048] Therefore, this application provides a cable connection structure, such as Figure 1 and Figure 2 As shown, the cable connection structure is used to connect the cable structures on both sides of the blocking member 10a. The cable connection structure includes a protective component 1 and a wiring component 2. The protective component 1 is disposed on one side of the blocking member 10a and is sealed to the blocking member 10a. The protective component 1 has multiple receiving holes 11, through which the cable structure passes and is sealed to the protective component 1. The wiring component 2 is disposed on the side of the blocking member 10a opposite to the protective component 1, and the wiring component 2 includes a conductive element 22 that is electrically connected to the cable structure.

[0049] In this technical solution, the cable connection structure is integrated and installed on the blocking component 10a. Multiple cable structures can pass through the corresponding receiving holes 11 on the protective component 1 and then uniformly enter the blocking component 10a on the side opposite to the protective component 1 to electrically connect with the conductive element 22. This avoids the need for a separate waterproof structure and its associated installation space for each cable, effectively saving space occupied by the cable connection structure. Specifically, by reducing the use of a separate waterproof structure and the space it occupies, the entire energy storage device can be made smaller. For small energy storage devices, the compact design facilitates installation and use, for example, it can be more conveniently placed in locations with limited space.

[0050] For example, the blocking member 10a has a through hole 101, the protective component 1 is disposed on one side of the blocking member 10a, and the multiple receiving holes 11 on the protective component 1 are simultaneously connected to the through hole 101, so that multiple cable structures pass through the corresponding receiving holes 11 and then uniformly enter the side of the blocking member 10a away from the protective component 1 through the through hole 101 and are electrically connected to the conductive element 22 disposed on that side.

[0051] In some embodiments of this application, such as Figure 2 As shown, the protective component 1 includes a protective cover 12 and multiple waterproof terminals 13. The protective cover 12 is disposed on one side of the blocking member 10a, and multiple receiving holes 11 are formed on the protective cover 12. Multiple waterproof terminals 13 are connected to the protective cover 12, and each waterproof terminal 13 is disposed within a different receiving hole 11. Each waterproof terminal 13 has a wire through hole 131 for the corresponding cable structure to pass through and for sealing connection with the corresponding cable structure. The waterproof terminals 13 themselves have waterproof and dustproof functions. The multiple waterproof terminals 13, each placed in a different receiving hole 11, can provide independent protection for each cable structure. Even if the environment around one cable structure is harsh, the protection of the other cable structures will not be affected, thereby reducing the risk of dust, moisture, etc., entering the energy storage device. Furthermore, integrating multiple waterproof terminals 13 within different receiving holes 11 of the same protective cover 12 allows for the orderly arrangement and connection of multiple cable structures, making the cable structure connection structure more compact. For example, at least one waterproof terminal 13 is provided with at least two wire holes 131 so that the waterproof terminal 13 can accommodate multiple cable structures at the same time.

[0052] During installation, the protective cover 12 is placed around the through hole 101 to provide physical protection for the wiring assembly 2. This prevents dust, moisture, foreign objects, etc. from entering the protective cover 12 and avoids safety hazards such as short circuits and leakage caused by external environmental factors.

[0053] The aforementioned multiple waterproof terminals 13 are arranged vertically on the protective cover 12, with adjacent waterproof terminals 13 in the vertical direction being staggered horizontally. This vertical arrangement of the waterproof terminals 13 fully utilizes the vertical space of the equipment, while the horizontal staggered arrangement avoids mutual obstruction and overlap between adjacent waterproof terminals 13, further improving space utilization and making the arrangement of the waterproof terminals 13 more compact. Correspondingly, the receiving holes 11 on the protective cover 12 are arranged in a position corresponding to the waterproof terminals 13. That is, the multiple receiving holes 11 are arranged vertically, with adjacent receiving holes 11 in the vertical direction being staggered horizontally.

[0054] Optionally, the aforementioned plurality of waterproof terminals 13 can be integrated onto the protective cover 12, forming an integral structure with the protective cover 12. For example, the waterproof terminals 13 can be fixed at specific positions in the mold first, and then plastic material can be injected into the mold to form the protective cover 12, so that the waterproof terminals 13 are embedded inside the protective cover 12 and tightly bonded to the protective cover 12, thereby enhancing waterproof performance and overall strength.

[0055] Please combine Figure 1 and Figure 3 In this embodiment, the protective component 1 further includes a seal 14, which is disposed between the protective cover 12 and the blocking member 10a to seal the connection between them. The seal 14 effectively fills the tiny gaps between the protective cover 12 and the blocking member 10a, preventing moisture from seeping into the device through these gaps. In humid environments or scenarios where rain may occur, good waterproof performance can prevent short circuits, leakage, and other malfunctions caused by moisture inside the device, ensuring its normal operation and service life.

[0056] Meanwhile, the seal 14 also prevents dust, particulate matter, and other impurities from entering the equipment through the connection between the protective cover 12 and the barrier 10a. In industrial environments, there may be a large amount of dust and pollutants in the air. Without a good seal, these impurities may enter the equipment, affecting the stability of electrical connections and even damaging other components. The presence of the seal 14 can effectively reduce the occurrence of this situation and improve the reliability and stability of the equipment.

[0057] Based on the above embodiments, the sealing element 14 is a sealing ring 141, and a sealing groove 121 is provided on the end face of the protective cover 12 facing the blocking element 10a. The sealing element 14 is disposed within the sealing groove 121 and at least partially protrudes from the sealing groove 121. On the one hand, the sidewall of the sealing groove 121 can limit the sealing ring 141, preventing it from excessively displacing under pressure and ensuring that the sealing ring 141 is always in the correct sealing position. On the other hand, in actual installation, the mounting end face of the protective cover 12 and the surface of the blocking element 10a may not be completely flat. The elastic characteristics of the sealing ring 141 enable it to adapt to this unevenness, filling the minor surface irregularities through its own compression and deformation, thereby ensuring the consistency and reliability of the sealing effect, greatly improving the sealing performance, and effectively preventing external substances such as moisture and dust from entering the equipment.

[0058] Of course, in other embodiments, a snap-fit ​​structure can also be provided on the mounting end face of the protective cover 12, and a matching groove can be designed on the sealing ring 141. The sealing ring 141 is fixed to the protective cover 12 by the cooperation of the snap-fit ​​and the groove, as not shown in the accompanying drawings of this application. Alternatively, the mounting end face of the protective cover 12 and the sealing ring 141 can also be bonded together by an adhesive layer, as not shown in the accompanying drawings of this application.

[0059] In another embodiment, the sealing element 14 can be a sealant. The sealant covers the outer periphery of the connection gap between the protective cover 12 and the blocking element 10a, and is connected to the protective cover 12 and the blocking element 10a. The sealant ring is disposed on the outer periphery of the protective cover 12, filling the tiny gap at the connection gap between the protective cover 12 and the blocking element 10a to form a continuous and elastic sealing film, thereby achieving a sealing effect.

[0060] Please combine Figure 2 and Figure 4 In this embodiment, the wiring assembly 2 includes an insulating base 21 and a conductive element 22 disposed on the insulating base 21. The insulating base 21 is disposed on the side of the blocking member 10a away from the protective assembly 1 and is connected to the blocking member 10a. The conductive element 22 is used to electrically connect the cable structure and electrical components. The insulating base 21 is made of insulating material, which can effectively isolate the conductive element 22 from surrounding metal parts (such as the blocking member 10a) to prevent current leakage from causing short circuits, electric shocks, and other safety accidents. At the same time, the insulating base 21 can reduce the impact of electromagnetic interference generated by the conductive element 22 on other components. In energy storage devices, stable transmission of electrical signals is crucial. The insulating base 21 can act as a shield to avoid electromagnetic interference causing signal distortion or equipment failure, ensuring the normal operation of the equipment.

[0061] like Figure 4As shown, the insulating base 21 includes a main body 211 and a connecting portion 212 disposed on the outer periphery of the main body 211. The connecting portion 212 is connected to the side of the blocking member 10a facing away from the protective assembly 1. The main body 211 has a mounting groove 2111 with an opening facing the protective assembly 1 (e.g., protective cover 12), and the conductive element 22 is disposed in the mounting groove 2111. That is, the mounting groove 2111 of the main body 211 can isolate the conductive element 22 from the outside world, preventing the conductive element 22 from directly contacting the metal blocking member 10a or other conductive parts, thereby effectively reducing the risk of electric shock and the possibility of electrical failure. In actual use, the mounting groove 2111 with its opening facing the protective cover 12 is designed to cooperate with the protective cover 12 to form a relatively closed space, further enhancing the protection of the internal conductive element 22. The protective cover 12 can prevent dust, moisture, foreign objects, etc. from entering the mounting groove 2111, avoiding these factors from damaging the electrical connection and improving the safety and reliability of the equipment.

[0062] For example, the connecting portion 212 of this application is a connecting plate, which is respectively disposed on the upper and lower sides of the main body portion 211. The connecting plate has a first connecting hole 2121. Correspondingly, a fastener passes through the first connecting hole 2121 and is threadedly connected to the blocking member 10a, thereby fixing the insulating base 21 to the blocking member 10a. Of course, the connection between the connecting portion 212 and the blocking member 10a can also be achieved by snap-fit ​​connection or adhesive bonding, so as to securely install the insulating base 21 on the blocking member 10a.

[0063] In some embodiments, the connecting portion 212 can be connected via the fixing seat 20 (see reference numeral). Figure 1 The insulating base 21 is fixedly installed on the blocking member 10a. The fixing seat 20 is located inside the blocking member 10a and extends in a direction away from the protective cover 12, so that the insulating base 21 is recessed inside the blocking member 10a, avoiding a relatively large part of the insulating base 21 protruding outside the blocking member 10a, which would increase the volume of the protective cover 12.

[0064] The conductive element 22 includes a conductive busbar 221. At least a portion of the conductive busbar 221 is located within the mounting groove 2111 and is used for electrical connection with the cable structure. At least another portion of the conductive busbar 221 extends outside the main body 211 and is used for electrical connection with electrical components. In this manner, the conductive busbar 221 is typically made of highly conductive materials such as copper or aluminum, resulting in low resistance. This minimizes current loss during transmission within the conductive busbar 221, efficiently transferring electrical energy from the cable structure to the electrical components. This ensures the overall energy transmission efficiency of the energy storage device and reduces energy loss due to resistance heating. Furthermore, the conductive busbar 221 can be connected to different types of cable structures and electrical components, exhibiting good compatibility.

[0065] After the conductive busbar 221 is installed in place, part of it is located within the mounting groove 2111, and the other part extends out of the main body 211, making the operating space relatively clear. Within the mounting groove 2111, the conductive busbar 221 can be reliably crimped or welded to the cable structure, ensuring a tight and stable connection. The connection between the conductive busbar 221 and the cable structure or electrical components is typically achieved through crimping or welding, resulting in tight physical contact and effectively reducing contact resistance, thus minimizing the risk of electrical faults caused by loose connections. If an electrical fault occurs, due to the structural characteristics of the conductive busbar 221, maintenance personnel can easily determine the possible location of the fault—whether it is within the mounting groove 2111 where it connects to the cable structure or in the extended portion where it connects to the electrical component—allowing for quick location and resolution of the problem and improving equipment maintenance efficiency.

[0066] like Figure 5 , Figure 6 and Figure 7 As shown, in this embodiment, the conductive bus 221 includes a first part 2211 and a second part 2212 connected together. The first part 2211 is bent relative to the second part 2212. The bottom of the mounting groove 2111 is provided with a positioning groove 2112. The first part 2211 is disposed in the positioning groove 2112 and connected to the main body 211. The bottom of the positioning groove 2112 is provided with a through groove 2113 that passes through the main body 211. The second part 2212 extends to the outside of the main body 211 through the through groove 2113. Specifically, the positioning groove 2112 at the bottom of the mounting groove 2111 can accurately position the first part 2211 of the conductive bus 221, ensuring that the conductive bus 221 is in the correct position in the mounting groove 2111, and preventing it from shifting or shaking during equipment operation. This accurate positioning helps to ensure the connection stability between the conductive bus 221 and the cable structure and electrical components. Furthermore, the bending design allows for precise control of the extension length of the second part 2212 beyond the main body 211. In electrical connections, the appropriate extension length of the second part 2212 is crucial. An excessively long extension length may cause interference with other components or increase electromagnetic interference. An excessively short extension length may prevent successful connection to electrical components. Therefore, the bending design of the conductive busbar 221 allows for flexible adjustment of its extension length according to actual needs, ensuring the reliability and stability of the electrical connection.

[0067] It should be noted that the conductive bus 221 generates heat when transmitting large currents, causing it to expand thermally. The design of the bent conductive bus 221 and the through groove 2113 can alleviate the stress caused by thermal expansion to a certain extent and avoid structural damage caused by thermal expansion.

[0068] For example, the first part 2211 is provided with a second connecting hole 2213, and the bottom of the positioning groove 2112 of the main body 211 is provided with a third connecting hole 2114. Fasteners are inserted into the second connecting hole 2213 and the third connecting hole 2114 to fix the first part 2211 to the main body 211. Of course, in some other embodiments, the first part 2211 can also be connected to the main body 211 by welding. Both of the above connection methods can effectively fix the conductive busbar 221 to the insulating base 21, preventing it from loosening or falling off when subjected to external forces such as vibration and impact, further enhancing the stability of the entire wiring assembly 2.

[0069] In other embodiments, the conductive element 22 can be a terminal block, which consists of an insulating shell and an internal conductive metal sheet. Depending on the connection method, terminal blocks can be classified into various types, such as plug-in terminal blocks, screw-type terminal blocks, and barrier terminal blocks. Alternatively, the conductive element 22 can also be a spring contact, utilizing the elasticity of a spring to achieve stable contact with an external conductor. A spring contact typically consists of a metal spring sheet and a conductive base. The spring sheet has good elasticity and conductivity, and can automatically adjust the contact pressure within a certain range to ensure a good electrical connection.

[0070] In practical applications, cable ends are typically equipped with cable lugs, also known as copper connector lugs or cable ears, and are generally made of materials with good conductivity such as copper or aluminum. The cable end is crimped or soldered onto the cable lug, and then connected to the conductive element 22 through the cable lug. Cable lugs usually have threaded holes or crimping grooves to facilitate fixing and connection with the conductive element 22.

[0071] like Figure 6 As shown, when there are at least two positioning slots 2112, two adjacent positioning slots 2112 are separated by a retaining wall 2115 so that the conductive elements 22 located in each positioning slot 2112 are electrically isolated from each other.

[0072] Please continue to refer to Figure 7 The insulating base 21 also includes a protrusion 213 located on the side of the main body 211 facing away from the protective assembly 1 (e.g., the protective cover 12). A through groove 2113 passes through the protrusion 213, and a second portion 2212 extends through the through groove 2113 to the outside of the protrusion 213. The protrusion 213 extends from the side of the main body 211 facing away from the protective cover 12 in a direction away from the protective cover 12, forming an additional structural part. Compared to the second portion 2212 extending directly out of the main body 211, the protrusion 213 provides a larger surface area for contact with the second portion 2212. The increased contact area increases the friction and engagement force between the second portion 2212 and the insulating base 21, enhancing the mechanical stability of the overall structure.

[0073] The main body 211, connecting part 212, and protruding part 213 of the insulating base 21 are integral structures. This integral structure eliminates the connection gaps and joint surfaces between different components, making the insulating base 21 a complete unit. At the same time, the integral structure avoids the potential degradation of electrical insulation performance caused by poor connections or gaps between different components, thereby ensuring the continuity and integrity of the insulation material, reducing the possibility of leakage from the insulating base 21, and improving the safety of the equipment.

[0074] Please continue to refer to Figure 1 In this embodiment, the end of the main body 211 facing the protective component 1 (e.g., the protective cover 12) passes through the blocking member 10a and extends into the interior of the protective component 1 (e.g., the protective cover 12). Due to the extension of the main body 211, if current is to leak through the insulating surface between the conductive element 22 inside the main body 211 and the blocking member 10a, it needs to travel a longer path, thereby increasing the creepage distance (the increased creepage distance is the protrusion length of the main body 211 extending into the interior of the protective cover 12), reducing the risk of creepage, and ensuring electrical insulation performance.

[0075] Please refer to Figure 1 and Figure 8 In this embodiment, the energy storage device provided by this application includes a housing 10, electrical components, and a cable connection structure. The electrical components are disposed inside the housing 10. The blocking member 10a is configured as a side plate of the housing 10. Since the cable connection structure in the energy storage device of this application has the same structure as the cable connection structure described above, both can solve the same technical problem and achieve the same technical effect.

[0076] like Figure 8 and Figure 9 As shown, a through hole 101 and a window 102 are provided on the side plate, and the energy storage device also includes a network port module 103. The network port module 103 is disposed on the side plate and exposed to the outside of the housing 10 through the window 102. A wiring assembly 2 is disposed at the through hole 101, and a protective assembly 1 simultaneously covers the outer periphery of both the through hole 101 and the window 102. At least one receiving hole 11 is used to allow cable structures to pass through and be electrically connected to the conductive element 22 of the wiring assembly 2. At least another receiving hole 11 is used to allow cable structures to pass through and be electrically connected to the network port module 103. Specifically, the same protective cover 12 can simultaneously cover the outer periphery of the through hole 101 and the window 102, forming an effective sealed space to provide physical protection for the network port module 103 and the wiring assembly 2. The protective cover 12 simultaneously covers the outer periphery of the through hole 101 and the window 102, integrating the functions of the waterproof terminal 13 and the network port module 103 into a single protective structure, reducing the number of parts in the device, simplifying the device structure, and lowering production costs and installation difficulty.

[0077] It should be noted that, in embodiments where the cable connection structure also includes a waterproof terminal 13, at least one waterproof terminal 13 is used to allow the cable structure to pass through and to be electrically connected to the network port module 103. The waterproof terminal 13 can prevent moisture from entering the device through the cable structure and causing damage to the network port module 103 and other electrical components.

[0078] Understandably, energy storage devices typically include power cables and network cables. Power cables are primarily used to transmit electrical energy, enabling energy exchange between the energy storage device and an external power source or load, ensuring normal charging and discharging. Network cables are mainly used for data communication and remote control between the energy storage device and external devices, facilitating user monitoring and management of the energy storage device.

[0079] For example, in a solar energy storage system, four power lines might be used to connect devices such as battery packs and inverters. Two of these lines are responsible for outputting DC power from the battery pack, while the other two are used to receive charging current, enabling charge and discharge control of the battery pack. A common example is a lead-acid battery pack, where two wires (possibly double-wound to increase current carrying capacity) are used to connect to other devices at each of the positive and negative terminals.

[0080] Furthermore, in large-scale energy storage systems, multiple energy storage devices need to work collaboratively. Ethernet cables enable communication and data exchange between these devices, allowing for unified management and control of the entire system. For example, in a power plant containing multiple energy storage containers, Ethernet cables connect these containers, enabling centralized monitoring and scheduling of the entire power plant.

[0081] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0082] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims. Furthermore, specific examples have been used in the specification to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application, and the content of this specification should not be construed as a limitation of this application.

Claims

1. A cable connection structure, characterized in that, The cable connection structure is used to connect the cable structures on both sides of the blocking member, and the cable connection structure includes: A protective component is disposed on one side of the blocking member and sealed to the blocking member. The protective component has multiple receiving holes, and the cable structure passes through the receiving holes and is sealed to the protective component. A wiring assembly is disposed on the side of the barrier away from the protective assembly, and the wiring assembly includes a conductive element electrically connected to the cable structure.

2. The cable connection structure according to claim 1, characterized in that, The protective components include: A protective cover is disposed on one side of the blocking member, and the plurality of the receiving holes are all formed on the protective cover; Multiple waterproof terminals are connected to the protective cover, and each waterproof terminal is disposed in a different receiving hole. Each waterproof terminal has a wire through hole for the corresponding cable structure to pass through, and the waterproof terminal is used to seal the connection with the corresponding cable structure.

3. The cable connection structure according to claim 2, characterized in that, The protective components also include: A sealing element is disposed between the protective cover and the blocking element to seal the connection between the protective cover and the blocking element.

4. The cable connection structure according to claim 3, characterized in that, The sealing element is a sealing ring, and the end face of the protective cover facing the blocking element is provided with a sealing groove. The sealing element is disposed in the sealing groove and at least partially protrudes from the sealing groove.

5. The cable connection structure according to claim 1, characterized in that, The wiring assembly also includes an insulating base, on which the conductive element is disposed.

6. The cable connection structure according to claim 5, characterized in that, The insulating base includes a main body and a connecting portion disposed on the outer periphery of the main body. The connecting portion is connected to the side of the blocking member away from the protective assembly. The main body has a mounting groove with an opening facing the protective assembly, and the conductive element is disposed in the mounting groove.

7. The cable connection structure according to claim 6, characterized in that, The conductive element includes a conductive busbar, at least a portion of which is located within the mounting groove and is used for electrical connection with the cable structure, and at least another portion of which extends outside the main body and is used for electrical connection with electrical components.

8. The cable connection structure according to claim 7, characterized in that, The conductive busbar includes a first part and a second part connected together. The first part is bent relative to the second part. The bottom of the mounting groove is provided with a positioning groove. The first part is disposed in the positioning groove and connected to the main body. The bottom of the positioning groove is provided with a through groove that passes through the main body. The second part extends to the outside of the main body through the through groove.

9. The cable connection structure according to claim 8, characterized in that, The insulating base also includes a protrusion located on the side of the main body opposite to the protective assembly. The through groove passes through the protrusion, and the second portion extends through the through groove to the outside of the protrusion.

10. The cable connection structure according to claim 6, characterized in that, The main body portion passes through the blocking member at one end facing the protective assembly and extends into the interior of the protective assembly.

11. An energy storage device, characterized in that, The energy storage device includes: Box; Electrical components are housed inside the enclosure; and, As in any one of claims 1 to 10, the cable connection structure, wherein the blocking member is configured as a side panel of the housing.

12. The energy storage device according to claim 11, characterized in that, The side plate has through holes and windows, and the energy storage device also includes: The network port module is mounted on the side panel and exposed to the outside of the enclosure through the window. The wiring assembly is disposed at the through hole, and the protective assembly covers both the through hole and the outer periphery of the window; at least one receiving hole is used to allow the cable structure to pass through and to be electrically connected to the conductive element of the wiring assembly; at least another receiving hole is used to allow the cable structure to pass through and to be electrically connected to the network port module.

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