Fuse integrated structure, power battery and electric device

Abstract

The application relates to a fuse integrated structure, a power battery and a power-using equipment, and relates to the technical field of power batteries. The fuse integrated structure comprises a junction box and a fuse body. The junction box is internally provided with a containing cavity. The fuse body is fixedly arranged in the containing cavity. A heat dissipation window is arranged on the side wall of the junction box, a heat dissipation plate is arranged on the outer wall of the junction box to block the heat dissipation window, and the side wall of the fuse body directly or indirectly abuts against the heat dissipation plate. The fuse integrated structure can improve the heat dissipation effect of the fuse while being integrated, and can ensure normal work of the fuse and reduce the risk of thermal runaway in the power battery.

Description

Technical Field

[0001] This application relates to the field of power battery technology, specifically to a fuse integrated structure, a power battery, and electrical equipment. Background Technology

[0002] In practical use, to ensure ease of wiring, power batteries typically integrate high-voltage connectors and low-voltage communication interfaces at their terminals. Furthermore, to provide overcurrent protection and reduce the risk of thermal runaway, fuses are usually included. These fuses are connected in series in the circuit and melt to disconnect the circuit in the event of an overcurrent.

[0003] In existing technologies, fuses, high-voltage connectors, and low-voltage communication ports are typically integrated into a junction box, which is located at the end of the power battery. This improves the overall integration while ensuring sealing and insulation protection.

[0004] However, when using the above structure, in order to ensure the sealing and insulation effect, the junction box is usually made of plastic or other materials. This makes it difficult for the heat generated by the fuse during operation to be dissipated in time, which can easily lead to the fuse overheating. This not only affects the normal use of the fuse and the safety of the power battery, but also easily conducts the heat of the fuse to the connected battery cell, causing the battery cell temperature to exceed the normal operating temperature. This not only increases the risk of thermal runaway, but also affects the service life of the battery cell.

[0005] Therefore, there is an urgent need to provide a fuse and power battery structure that can improve the heat dissipation effect of the fuse while integrating it into the design, ensuring the normal operation of the fuse and reducing the risk of thermal runaway inside the power battery. Utility Model Content

[0006] The purpose of this application is to provide an integrated fuse structure, a power battery, and electrical equipment that can improve the heat dissipation effect of the fuse while ensuring the normal operation of the fuse and reducing the risk of thermal runaway inside the power battery.

[0007] To achieve the above objectives, in a first aspect, this application provides a fuse integrated structure, which includes a junction box and a fuse body. The junction box has an internal receiving cavity. The fuse body is fixedly disposed within the receiving cavity. A heat dissipation window is provided on the side wall of the junction box, and a heat dissipation plate is provided on the outer wall of the junction box to block the heat dissipation window. The side wall of the fuse body directly or indirectly abuts against the heat dissipation plate.

[0008] Based on the embodiments described above, when using the integrated fuse structure, the fuse body is housed within a junction box. In specific applications, positive and negative connectors and other structures can also be integrated into the junction box. This junction box not only improves the overall integration of the power battery, facilitating assembly and maintenance, but also provides protection for the fuse body and other structures, providing insulation protection and improving overall airtightness.

[0009] By incorporating the aforementioned design of this application, including heat dissipation windows and a heat sink, the airtightness of the junction box is ensured while simultaneously creating a rapid heat conduction path. The fuse body is then directly or indirectly connected to the heat sink, allowing the heat generated during fuse operation to be quickly dissipated through this path, thus preventing overheating issues from affecting the normal operation of the fuse body. Simultaneously, it avoids problems such as thermal runaway of the battery cell caused by high temperatures generated by the fuse body.

[0010] In summary, this application, by incorporating heat dissipation windows and heat sinks on the junction box, ensures both airtightness and sealing while creating a rapid heat conduction channel between the fuse body and the outside of the junction box. This facilitates the timely and rapid dissipation of heat generated during fuse operation, improving heat dissipation and preventing overheating issues from affecting the normal operation of the fuse. Simultaneously, it prevents high temperatures generated by the fuse body from causing thermal runaway in the battery cells.

[0011] In some embodiments, the fuse integration structure further includes thermally conductive adhesive, which is at least partially disposed between the fuse body and the heat sink.

[0012] Based on the embodiments described above, by applying thermally conductive adhesive between the fuse body and the heat sink, the excellent thermal conductivity of the adhesive itself can be utilized to improve the thermal conductivity between the fuse body and the heat sink. Furthermore, the application of thermally conductive adhesive can increase the thermally conductive area between the fuse body and the heat sink. Compared to direct contact between the fuse body and the heat sink, the fluidity of the thermally conductive adhesive can better fill the space between them, increasing the contact area. In addition, the application of thermally conductive adhesive can also improve the overall airtightness of the junction box by sealing the gaps between the heat sink and the heat dissipation window.

[0013] In some embodiments, the fuse body includes a first heat dissipation surface and at least two second heat dissipation surfaces disposed on the side of the first heat dissipation surface. A thermally conductive adhesive portion is located between the first heat dissipation surface and the heat sink, and the thermally conductive adhesive portion covers the surface of the second heat dissipation surface.

[0014] Based on the above embodiments of this application, the contact area between the fuse body and the thermally conductive adhesive is increased by the above settings, thereby increasing the thermal conductivity between the two. This allows the heat dissipated by the fuse body to be conducted to the thermally conductive adhesive more quickly, and then transferred to the heat sink through the thermally conductive adhesive, thereby further improving the heat dissipation and cooling efficiency of the fuse body.

[0015] In some embodiments, the junction box includes a base and a top cover, the top cover being fastened to the base to form a receiving cavity. A heat dissipation window is provided on the top cover, and a heat dissipation plate is fixed to the outer wall of the top cover.

[0016] Based on the embodiments described above, by separating the junction box into a base and a top cover, the assembly of components such as the fuse body can be facilitated. Simultaneously, the heat dissipation window and heat sink are both located on the top cover, making it easy to replace them promptly even if they are damaged, thus reducing the impact on the overall airtightness of the junction box.

[0017] In some embodiments, a baffle is provided on the inner wall of the top cover, and the baffle surrounds the heat dissipation window to form a cylindrical structure. The fuse body portion is located inside the cylindrical structure, and the thermally conductive adhesive portion is located between the inner wall of the cylindrical structure and the second heat dissipation surface.

[0018] Based on the embodiments described above, by forming a cylindrical structure by providing a baffle on the inner wall of the upper cover, it is convenient to fix the position of the fuse body, so that the first heat dissipation surface of the fuse body can be better aligned with the heat dissipation window, thereby improving the heat dissipation effect. On the other hand, it is convenient to limit the shape of the thermally conductive adhesive, so that the thermally conductive adhesive can better cover the first and second heat dissipation surfaces of the fuse body.

[0019] In some embodiments, heat dissipation fins are provided on the surface of the heat sink away from the junction box, and multiple heat dissipation fins are arranged at intervals on the heat sink.

[0020] Based on the above embodiments of this application, by providing heat dissipation fins on the heat dissipation plate, the contact area between the heat dissipation plate and the air is further increased, thereby further improving the heat dissipation effect of the heat dissipation plate, and thus improving the heat dissipation effect on the fuse body.

[0021] In some embodiments, the area of ​​the heat sink is larger than the area of ​​the heat dissipation window.

[0022] Based on the embodiments described above, by setting the area of ​​the heat sink to be larger than the area of ​​the heat dissipation window, on the one hand, the heat sink can completely cover the heat dissipation window, achieving complete sealing of the heat dissipation window and reducing the impact on the airtightness of the junction box. On the other hand, by increasing the area of ​​the heat sink, the contact area between the heat sink and the air can be increased, thereby improving the heat dissipation effect of the heat sink.

[0023] According to a second aspect of this application, a power battery is provided, comprising a battery cell, a battery box, and the aforementioned fuse integrated structure. The battery cell is disposed inside the battery box, a junction box is disposed on the side of the battery box, and the fuse body is connected in series with the battery cell.

[0024] Based on the above embodiments of this application, the power battery provided by this application includes the aforementioned fuse integrated structure. The fuse body is integrated into the side of the battery box and connected in series with the battery cell, so as to promptly melt and disconnect the circuit when an overcurrent occurs in the power battery circuit. Furthermore, by providing a heat dissipation window and heat dissipation plate on the junction box, while ensuring the airtightness and sealing effect of the junction box, a rapid heat conduction channel is formed between the fuse body and the outside of the junction box, so as to quickly dissipate the heat dissipated by the fuse body during operation, improving the heat dissipation effect of the fuse body and preventing heat dissipation problems from affecting the normal use of the fuse body. At the same time, it avoids problems such as thermal runaway of the battery cell caused by the high temperature generated by the fuse body.

[0025] In some embodiments, the base of the junction box is also provided with positive and negative connectors, which are connected to the battery cells.

[0026] Based on the embodiments described above, the positive and negative connectors are integrated together with the fuse body on the junction box, thereby improving the overall integration level of the power battery. In use, the positive and negative connectors connect to the battery cell to enable connection and conduction between the battery cell and external circuits.

[0027] According to a third aspect of this application, an electrical device is provided, comprising a device body and the aforementioned power battery. The device body has a power supply cavity, and the power battery is disposed within the power supply cavity.

[0028] Based on the above embodiments of this application, the electrical equipment provided by this application includes the above-mentioned power battery, and therefore also has the above-mentioned beneficial effects. To avoid repetition, it will not be described again here.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the internal structure of the fuse integrated structure provided in the embodiments of this application.

[0031] Figure 2 This is an exploded view of the fuse integrated structure provided in the embodiments of this application.

[0032] Figure 3 This is a schematic diagram of the upper cover in the fuse integrated structure provided in this application embodiment.

[0033] Figure 4 This is a schematic diagram of the fuse body, thermally conductive adhesive, and heat sink in the fuse integrated structure provided in the embodiments of this application.

[0034] Explanation of reference numerals in the attached figures 1. Junction box; 11. Receiving cavity; 12. Heat dissipation window; 13. Base; 14. Top cover; 141. Enclosure; 2. Fuse body; 21. First heat dissipation surface; 22. Second heat dissipation surface; 3. Heat dissipation plate; 31. Heat dissipation fins; 4. Thermally conductive adhesive; 5. Positive and negative connectors. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this application, it should be noted that, unless otherwise stated, the terms "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In existing technologies, fuses, high-voltage connectors, and low-voltage communication ports are typically integrated into a junction box, which is located at the end of the power battery. This improves the overall integration of the power battery while ensuring sealing and insulation protection.

[0042] However, when using the above structure, in order to ensure the sealing and insulation effect, the junction box is usually made of plastic or other materials. This makes it difficult for the heat generated by the fuse during operation to be dissipated in time, which can easily lead to the fuse overheating. This not only affects the normal use of the fuse and the safety of the power battery, but also easily conducts the heat of the fuse to the connected battery cell, causing the battery cell temperature to exceed the normal operating temperature. This not only increases the risk of thermal runaway, but also affects the service life of the battery cell.

[0043] Meanwhile, under the above circumstances, in order to ensure the normal use of the fuse, it is necessary to limit the upper limit of the current that can pass through. Usually, the upper limit of the current that the fuse can allow is less than the upper limit of the charging and discharging current of the battery cell. In other words, the heat dissipation of the fuse will also limit the overcurrent capacity of the battery, thus making the battery unable to meet the requirements of high-rate fast charging and high-current continuous discharge.

[0044] Therefore, there is an urgent need to provide a fuse and power battery structure that can improve the heat dissipation effect of the fuse while integrating it into the design, ensuring the normal operation of the fuse and reducing the risk of thermal runaway inside the power battery.

[0045] To address the aforementioned problems in the prior art, embodiments of this application provide an integrated fuse structure. (Reference) Figures 1 to 4As shown, the integrated fuse structure includes a junction box 1 and a fuse body 2. The junction box 1 has an internal receiving cavity 11. The fuse body 2 is fixedly installed within the receiving cavity 11. A heat dissipation window 12 is provided on the side wall of the junction box 1, and a heat dissipation plate 3 is provided on the outer wall of the junction box 1 to block the heat dissipation window 12. The side wall of the fuse body 2 directly or indirectly abuts against the heat dissipation plate 3.

[0046] Based on the embodiments described above, when using the integrated fuse structure, the fuse body 2 is housed within the junction box 1. In specific applications, positive and negative connectors 5 and other structures can also be integrated into the junction box 1. In this case, the junction box 1 not only improves the overall integration of the power battery, facilitating assembly and maintenance, but also provides protection for the fuse body 2 and other structures, achieving insulation protection and improving overall airtightness.

[0047] By incorporating the aforementioned design of this application, including the heat dissipation window 12 and heat sink 3, the airtightness of the junction box 1 is ensured while a rapid heat conduction path is formed on the junction box 1. The fuse body 2 is then directly or indirectly connected to the heat sink 3, allowing the heat generated by the fuse body 2 during operation to be quickly dissipated through this rapid heat conduction path, thereby preventing heat dissipation issues from affecting the normal operation of the fuse body 2. Simultaneously, it avoids problems such as thermal runaway of the battery cell caused by the high temperature generated by the fuse body 2.

[0048] At the same time, the above settings improve the heat dissipation effect of the fuse body 2, thereby increasing the current limit of the fuse body 2, which in turn improves the overcurrent capacity of the power battery, enabling the power battery to meet the requirements of high-rate fast charging or achieve continuous discharge of large current.

[0049] In summary, by providing a heat dissipation window 12 and a heat dissipation plate 3 on the junction box 1, this application ensures the airtightness and sealing effect of the junction box 1 while forming a rapid heat conduction channel between the fuse body 2 and the outside of the junction box 1. This allows for the timely and rapid dissipation of heat generated by the fuse body 2 during operation, improving the heat dissipation effect of the fuse body 2 and preventing heat dissipation problems from affecting the normal use of the fuse body 2. Simultaneously, it prevents the high temperature generated by the fuse body 2 from causing thermal runaway of the battery cells.

[0050] Specifically, in actual use, the specific structure and type of the fuse body 2 can be selected with reference to existing technologies. For example, a high-voltage DC fuse can be selected. At the same time, the fuse body 2 can be fixed in the junction box 1 by bolts or other structures, and then connected in series with the battery cell by connecting bars or other structures.

[0051] Furthermore, it should be noted that the phrase "the side wall of the fuse body 2 directly or indirectly abuts against the heat sink 3" in this application refers to the fuse body 2 directly abutting against the heat sink 3 or other structures being provided between the fuse body 2 and the heat sink 3 as heat conduction elements between them.

[0052] refer to Figure 2 As shown in the exemplary embodiment provided in this application, the fuse integrated structure may further include thermally conductive adhesive 4, which is at least partially disposed between the fuse body 2 and the heat sink 3.

[0053] Based on the embodiments described above, by providing thermally conductive adhesive 4 between the fuse body 2 and the heat sink 3, the excellent thermal conductivity of the adhesive 4 itself can improve the thermal conductivity between the fuse body 2 and the heat sink 3. Furthermore, the application of thermally conductive adhesive 4 can increase the thermally conductive area between the fuse body 2 and the heat sink 3. Compared to direct contact between the fuse body 2 and the heat sink 3, the fluid thermally conductive adhesive 4 can better fill the space between them, increasing the contact area. In addition, the application of thermally conductive adhesive 4 can also improve the overall airtightness of the junction box 1 by sealing the gaps between the heat sink 3 and the heat dissipation window 12.

[0054] Furthermore, in some embodiments of this application, the fuse body 2 may include a first heat dissipation surface 21 and at least two second heat dissipation surfaces 22 disposed on the side of the first heat dissipation surface 21. A portion of the thermally conductive adhesive 4 is located between the first heat dissipation surface 21 and the heat sink 3, and a portion of the thermally conductive adhesive 4 covers the surface of the second heat dissipation surface 22.

[0055] Based on the above embodiments of this application, the contact area between the fuse body 2 and the thermally conductive adhesive 4 is increased by the above settings, thereby increasing the thermal conductivity between the two. The heat dissipated by the fuse body 2 can be conducted to the thermally conductive adhesive 4 more quickly, and then transferred to the heat sink 3 through the thermally conductive adhesive 4, thereby further improving the heat dissipation and cooling efficiency of the fuse body 2.

[0056] For details, please refer to the following: Figure 2 and Figure 4 As shown, the fuse body 2 is configured as a cube structure, with one side of the cube structure facing the heat sink 3, which is the first heat dissipation surface 21 of the fuse body 2. At the same time, four second heat dissipation surfaces 22 are provided around the first heat dissipation surface 21, including the top and bottom and left and right sides. The thermally conductive adhesive 4 completely covers the first heat dissipation surface 21 and partially covers the four second heat dissipation surfaces 22, thereby forming a concave rectangular cavity structure that is entirely wrapped around the end of the fuse body 2 facing the heat sink 3.

[0057] In addition, in some other embodiments of this application, when the fuse body 2 is set to other shapes, the thermally conductive adhesive 4 is set to the corresponding shape to wrap around the end of the fuse body 2 facing the heat sink 3. The specific shape can be selected according to the actual situation, and this application does not impose any specific restrictions on it.

[0058] In this application, the junction box 1 can be configured in any suitable shape. (See reference) Figure 2 As shown in the exemplary embodiment provided in this application, the junction box 1 may include a base 13 and a top cover 14. The top cover 14 is fastened to the base 13 to form a receiving cavity 11 in cooperation with the base 13. A heat dissipation window 12 is opened on the top cover 14, and a heat dissipation plate 3 is fixed to the outer wall of the top cover 14.

[0059] Based on the above embodiments of this application, by separating the junction box 1 into a base 13 and a top cover 14, the assembly of components such as the fuse body 2 can be facilitated. Meanwhile, the heat dissipation window 12 and the heat sink 3 are both located on the top cover 14, making it easy to replace them promptly even if the heat dissipation window 12 or the heat sink 3 is damaged, thus reducing the impact on the overall airtightness of the junction box 1.

[0060] Further, refer to Figure 3 As shown in some embodiments of this application, a baffle 141 may be provided on the inner wall of the top cover 14, and the baffle 141 surrounds the heat dissipation window 12 to form a cylindrical structure. The fuse body 2 is partially located inside the cylindrical structure, and the thermally conductive adhesive 4 is partially located between the inner wall of the cylindrical structure and the second heat dissipation surface 22.

[0061] Based on the above embodiments of this application, by setting a baffle 141 on the inner wall of the upper cover 14 to form a cylindrical structure, on the one hand, it is convenient to fix the position of the fuse body 2, so that the first heat dissipation surface 21 of the fuse body 2 can be better aligned with the position of the heat dissipation window 12, thereby improving the heat dissipation effect. On the other hand, it is convenient to define the shape of the thermally conductive adhesive 4, so that the thermally conductive adhesive 4 can better cover the first heat dissipation surface 21 and the second heat dissipation surface 22 of the fuse body 2.

[0062] Furthermore, in this application, the junction box 1 can be made of any suitable material during the specific manufacturing process. For example, high-strength plastic or resin can be used, taking advantage of the insulating and airtight properties of these materials. Simultaneously, during manufacturing, the top cover 14 and the base 13 can be integrally formed and then connected and fixed using snap-fit ​​or bolt methods. The specific design can be tailored to the actual process, and this application does not impose any specific limitations on this.

[0063] Similarly, in this application, the heat sink 3 can also be configured with any suitable structure. (See reference) Figure 2 and Figure 4As shown in some embodiments of this application, heat dissipation fins 31 may be provided on the surface of the heat dissipation plate 3 facing away from the junction box 1, and multiple heat dissipation fins 31 are arranged at intervals on the heat dissipation plate 3.

[0064] Based on the above embodiments of this application, by providing heat dissipation fins 31 on the heat dissipation plate 3, the contact area between the heat dissipation plate 3 and the air is further increased, thereby further improving the heat dissipation effect of the heat dissipation plate 3, and thus improving the heat dissipation effect on the fuse body 2.

[0065] Specifically, during installation, multiple heat dissipation fins 31 can be densely arranged at equal intervals on the heat dissipation plate 3 to increase the heat dissipation area. In the actual production process, the heat dissipation fins 31 can be integrally formed with the heat dissipation plate 3, and the heat dissipation plate 3 and the heat dissipation fins 31 can be made of materials with good thermal conductivity, such as aluminum alloy.

[0066] Furthermore, in some embodiments of this application, the area of ​​the heat sink 3 may be larger than the area of ​​the heat dissipation window 12.

[0067] Based on the above embodiments of this application, by setting the area of ​​the heat sink 3 to be larger than the area of ​​the heat dissipation window 12, on the one hand, the heat sink 3 can completely cover the heat dissipation window 12, achieving complete sealing of the heat dissipation window 12 and reducing the impact on the airtightness of the junction box 1. On the other hand, by increasing the area of ​​the heat sink 3, the contact area between the heat sink 3 and the air can be increased, thereby improving the heat dissipation effect of the heat sink 3.

[0068] Specifically, the heat sink 3 can be fixed to the top cover 14 by means of snap-fit ​​or other methods during installation. The specific connection method can be selected according to the actual situation.

[0069] Based on the above technical solutions, this application also provides a power battery, which includes a battery cell, a battery box, and the aforementioned fuse integrated structure. The battery cell is disposed inside the battery box, the junction box 1 is disposed on the side of the battery box, and the fuse body 2 is connected in series with the battery cell.

[0070] Based on the above embodiments of this application, the power battery provided by this application includes the aforementioned fuse integrated structure. The fuse body 2 is integrated into the side of the battery box and connected in series with the battery cell, so as to promptly melt and cut off the circuit when an overcurrent occurs in the power battery circuit. Furthermore, by providing a heat dissipation window 12 and a heat dissipation plate 3 on the junction box 1, while ensuring the airtightness and sealing effect of the junction box 1, a rapid heat conduction channel is formed between the fuse body 2 and the outside of the junction box 1, so as to quickly dissipate the heat generated by the fuse body 2 during operation, improving the heat dissipation effect of the fuse body 2 and preventing heat dissipation problems from affecting the normal use of the fuse body 2. At the same time, it avoids problems such as thermal runaway of the battery cell caused by the high temperature generated by the fuse body 2.

[0071] Furthermore, the power battery disclosed in this application is not limited to the above structure. For example, in some embodiments, the power battery may also include a liquid cooling plate, which is directly in contact with one end of the battery cell for heat dissipation and cooling of the battery cell. Specific configurations can be made according to actual circumstances, and this application does not impose any specific limitations on this.

[0072] Or, refer to Figure 1 As shown in some embodiments of this application, a positive and negative connector 5 may also be provided on the base 13 of the junction box 1, and the positive and negative connector 5 is connected to the battery cell.

[0073] Based on the embodiments described above, the positive and negative connectors 5 and the fuse body 2 are integrated together on the junction box 1, thereby improving the overall integration level of the power battery. In use, the positive and negative connectors 5 are connected to the battery cell to enable connection and conduction between the battery cell and external circuits.

[0074] Based on the above technical solutions, this application also provides an electrical device, which includes a device body and the aforementioned power battery. The device body has a power supply cavity, and the power battery is disposed within the power supply cavity.

[0075] In this application, the electrical equipment can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0076] Based on the above embodiments of this application, the electrical equipment provided by this application includes the above-mentioned power battery, and therefore also has the above-mentioned beneficial effects. To avoid repetition, it will not be described again here.

[0077] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0078] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0079] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

Claims

1. A fuse integrated structure, characterized in that, The integrated fuse structure includes: The junction box has an internal cavity for receiving the junction box; The fuse body is fixedly disposed within the receiving cavity; The junction box has a heat dissipation window on its side wall and a heat dissipation plate on its outer wall to block the heat dissipation window. The fuse body side wall is in direct or indirect contact with the heat dissipation plate.

2. The fuse integrated structure according to claim 1, characterized in that, The fuse integrated structure also includes thermally conductive adhesive, which is at least partially disposed between the fuse body and the heat sink.

3. The fuse integrated structure according to claim 2, characterized in that, The fuse body includes a first heat dissipation surface and at least two second heat dissipation surfaces disposed on the side of the first heat dissipation surface; The thermally conductive adhesive portion is located between the first heat dissipation surface and the heat dissipation plate, and the thermally conductive adhesive portion covers the surface of the second heat dissipation surface.

4. The fuse integrated structure according to claim 3, characterized in that, The junction box includes a base and a top cover, the top cover being fastened to the base to form the receiving cavity. The heat dissipation window is opened on the upper cover, and the heat dissipation plate is fixed on the outer wall of the upper cover.

5. The fuse integrated structure according to claim 4, characterized in that, A baffle is provided on the inner wall of the upper cover, and the baffle surrounds the heat dissipation window to form a cylindrical structure; The fuse body is located inside the cylindrical structure, and the thermally conductive adhesive is located between the inner wall of the cylindrical structure and the second heat dissipation surface.

6. The fuse integrated structure according to any one of claims 1-5, characterized in that, The heat sink has heat dissipation fins on its surface away from the junction box, and a plurality of heat dissipation fins are arranged at intervals on the heat sink.

7. The fuse integrated structure according to claim 6, characterized in that, The area of ​​the heat sink is larger than the area of ​​the heat dissipation window.

8. A power battery, characterized in that, The power battery includes: Battery cells and a battery case, wherein the battery cells are disposed within the battery case; and, According to any one of claims 1-7, the junction box is disposed on the side of the battery box, and the fuse body is connected in series with the battery cell.

9. The power battery according to claim 8, characterized in that, The junction box base is also provided with positive and negative connectors, which are connected to the battery cell.

10. An electrical appliance, characterized in that, The electrical equipment includes: The main body of the equipment, wherein an energy supply cavity is provided on the main body of the equipment; and, The power battery as described in claim 8 or 9, wherein the power battery is disposed within the energy supply cavity.

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