Distribution box and battery device

Abstract

The embodiment of the utility model provides a power distribution box and a battery device. The power distribution box comprises a mounting base which is provided with an accommodating cavity; the connector group comprises a quick charging connector and a main connector, the quick charging connector and the main connector are integrally formed with the mounting base, and at least parts of the quick charging connector and the main connector are exposed out of the accommodating cavity; the component group comprises a main relay group and a fast charging relay group, the main relay group and the fast charging relay group are arranged in the accommodating cavity, and at least parts of the main relay group and the fast charging relay group are exposed out of the accommodating cavity; wherein the main relay group is electrically connected with the main connector, and the fast charging relay group is electrically connected with the fast charging connector. The power distribution box provided by the embodiment of the utility model is simpler in structure and lower in cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a power distribution box and a battery device. BACKGROUND

[0002] Battery devices, such as lithium ion batteries, sodium ion batteries and the like, are widely used in portable electronic devices, electric vehicles, energy storage devices and other fields due to their advantages of high energy density and good cycle performance. High-voltage devices such as relays and connectors are usually arranged in the battery device, and in order to avoid the high-voltage devices from being scattered in the battery device and causing electric leakage, the high-voltage devices are usually installed in a power distribution box.

[0003] In the prior art, the connectors in the power distribution box usually include high-voltage connectors and fast-charging connectors, and when various connectors are installed on the power distribution box, multiple connector mounting pieces need to be installed on the power distribution box, and then various connectors are fixed in the connector mounting pieces. However, this installation method requires additional installation of multiple connector mounting pieces on the power distribution box, which makes the structure of the power distribution box complex and the cost high. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a power distribution box and a battery device to solve the problem of complex structure and high cost of the existing power distribution box.

[0005] In order to solve the above technical problems, the application is implemented as follows:

[0006] In a first aspect, the application discloses a power distribution box applied to a battery device, and the power distribution box comprises:

[0007] A mounting base, wherein the mounting base has a receiving cavity;

[0008] A connector group, wherein the connector group comprises a fast-charging connector and a main connector, the fast-charging connector and the main connector are integrally formed with the mounting base, and the fast-charging connector and the main connector are at least partially exposed to the receiving cavity;

[0009] A component group, wherein the component group comprises a main relay group and a fast-charging relay group, the main relay group and the fast-charging relay group are arranged in the receiving cavity and at least partially exposed to the receiving cavity; and the main relay group is electrically connected to the main connector, and the fast-charging relay group is electrically connected to the fast-charging connector.

[0010] Optionally, the main relay set comprises a main positive relay and a main negative relay, the fast charging relay set comprises a fast charging positive relay and a fast charging negative relay, the accommodating cavities comprise a first accommodating cavity, a second accommodating cavity, a third accommodating cavity and a fourth accommodating cavity arranged at intervals, the main positive relay is arranged in the first accommodating cavity, the fast charging positive relay is arranged in the second accommodating cavity, the fast charging negative relay is arranged in the third accommodating cavity, and the main negative relay is arranged in the fourth accommodating cavity.

[0011] Optionally, the main positive relay is arranged adjacent to the fast charging positive relay, and the main negative relay is arranged adjacent to the fast charging negative relay.

[0012] Optionally, the component set further comprises a shunt and a current sensor, the mounting base is further provided with adjacent first and second mounting grooves, the shunt is arranged in the first mounting groove, the current sensor is arranged in the second mounting groove, the shunt is arranged adjacent to the main negative relay, the shunt is electrically connected to the main negative relay and the fast charging negative relay respectively, and the current sensor is electrically connected to the shunt.

[0013] Optionally, the component set further comprises a first fuse and a second fuse, the mounting base is further provided with adjacent third and fourth mounting grooves, the first fuse is arranged in the third mounting groove, the second fuse is arranged in the fourth mounting groove, the second fuse is arranged adjacent to the main positive relay, the second fuse is electrically connected to the main positive relay and the fast charging positive relay respectively, and the first fuse is electrically connected to the second fuse.

[0014] Optionally, the component set further comprises a pre-charging resistor and a pre-charging relay, the mounting base is further provided with adjacent fifth and sixth mounting grooves, the pre-charging resistor is arranged in the fifth mounting groove, the pre-charging relay is arranged in the sixth mounting groove, the pre-charging relay is arranged adjacent to the second fuse, the pre-charging relay is electrically connected to the second fuse, and the pre-charging relay is electrically connected to the pre-charging resistor.

[0015] Optionally, the power distribution box further comprises a self-made circuit board, and the self-made circuit board is connected to the mounting base.

[0016] The self-made circuit board is provided with a plurality of connection ports, and the component set is fixedly connected with a plurality of plug-in connectors respectively, the plug-in connectors are plugged into the connection ports, so as to electrically connect the self-made circuit board and the component set.

[0017] Optionally, the connector set further comprises a low-voltage connector, the low-voltage connector is integrally formed with the mounting base, and the low-voltage connector is arranged at the same side of the mounting base as the main connector and the fast charging connector.

[0018] Optionally, the connector set comprises a fast charging connector shell, a main connector shell and a low-voltage connector shell, and the fast charging connector shell, the main connector shell and the low-voltage connector shell are integrally formed with the mounting base.

[0019] Optionally, the connector set further comprises a plurality of electrical connectors, and the plurality of electrical connectors are respectively embedded in the fast charging connector shell, the main connector shell and the low-voltage connector shell, and the electrical connectors are electrically connected with the component set.

[0020] In a second aspect, the application further discloses a battery device, comprising the power distribution box according to any one of the above.

[0021] In the embodiments of the application, the power distribution box comprises a mounting base, a fast charging connector and a main connector, the main connector and the fast charging connector are integrally formed with the mounting base, so that additional components can be avoided on the power distribution box, the structure of the power distribution box is simpler, and the cost is reduced.

[0022] Additional aspects and advantages of the application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the application will become apparent and be readily understood by reference to the following description, and by part in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 is a structural exploded view of a power distribution box provided by an embodiment of the application;

[0025] Figure 2 is one of structural schematic views of a power distribution box provided by an embodiment of the application;

[0026] Figure 3 is another one of structural schematic views of a power distribution box provided by an embodiment of the application;

[0027] Figure 4 is one of structural schematic views of a mounting base of a power distribution box provided by an embodiment of the application;

[0028] Figure 5 is another one of structural schematic views of a mounting base of a power distribution box provided by an embodiment of the application;

[0029] Figure 6This is the third schematic diagram of the structure of a mounting base for a distribution box provided in this application embodiment.

[0030] Figure 7 This is a circuit diagram of a power distribution box provided in an embodiment of this application.

[0031] Reference numerals: 1. Mounting base; 10. Receiving cavity; 101. First receiving cavity; 102. Second receiving cavity; 103. Third receiving cavity; 104. Fourth receiving cavity; 11. First mounting slot; 12. Second mounting slot; 13. Third mounting slot; 14. Fourth mounting slot; 15. Fifth mounting slot; 16. Sixth mounting slot; 17. Positive lead-out piece; 18. Negative lead-out piece; 20. Fast charging connector; 200. Fast charging connector housing; 2001. Fast charging connector negative housing; 2002. Fast charging connector positive housing; 21. Main connector; 210. Main connector housing ; 2101, Main connector negative housing; 2102, Main connector positive housing; 22, Low-voltage connector; 220, Low-voltage connector housing; 23, Electrical connector; 30, Plug-in connector; 31, Main relay group; 311, Main positive relay; 312, Main negative relay; 32, Fast charging relay group; 321, Fast charging positive relay; 322, Fast charging negative relay; 33, Shunt; 34, Current sensor; 35, First fuse; 36, Second fuse; 37, Pre-charge resistor; 38, Pre-charge relay; 39, Self-made circuit board; 390, Connection port; 4, Protective cover. Detailed Implementation

[0032] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this 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.

[0033] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The present application provides a power distribution box, which is applied to a battery device. The power distribution box of the present application will be described in detail below with reference to the accompanying drawings.

[0037] Referring to Figures 1-6 The present application provides a power distribution box, which comprises a mounting base 1 having a receiving cavity 10; a connector group comprising a fast charging connector 20 and a main connector 21, the fast charging connector 20 and the main connector 21 being integrally formed with the mounting base 1, the fast charging connector 20 and the main connector 21 being at least partially exposed to the receiving cavity 10; and a component group comprising a main relay group 31 and a fast charging relay group 32, the main relay group 31 and the fast charging relay group 32 being arranged in the receiving cavity 10 and at least partially exposed to the receiving cavity 10; wherein the main relay group 31 is electrically connected to the main connector 21, and the fast charging relay group 32 is electrically connected to the fast charging connector 20.

[0038] Specifically, the main connector 21 and the main relay group 31 are electrically connected, the main connector 21 is a high-voltage connector, and the main connector 21 is used to connect with external devices to realize the discharging function of the power distribution box. The fast charging connector 20 is electrically connected to the fast charging relay group 32, and the fast charging connector 20 is used to connect with external devices to realize the fast charging function of the power distribution box, so that the power distribution box has both discharging function and fast charging function, and the application range of the power distribution box is improved, which can be applied to high-voltage platform and large-current working conditions.

[0039] In the embodiments of the present application, by integrally forming the fast charging connector 20 and the main connector 21 with the mounting base 1, compared with the prior art scheme of installing additional mounting components in the power distribution box to install the fast charging connector 20 and the main connector 21, the additional mounting components on the power distribution box can be avoided, and the fast charging connector 20 and the main connector 21 are integrally formed, so that the structure of the power distribution box is simpler, and the cost is reduced.

[0040] As shown in Figures 2-5 In some optional embodiments, the main relay group 31 includes a main positive relay 311 and a main negative relay 312, the fast charging relay group 32 includes a fast charging positive relay 321 and a fast charging negative relay 322, the accommodating cavity 10 includes a first accommodating cavity 101, a second accommodating cavity 102, a third accommodating cavity 103, and a fourth accommodating cavity 104, the main positive relay 311 is arranged in the first accommodating cavity 101, the fast charging positive relay 321 is arranged in the second accommodating cavity 102, the fast charging negative relay 322 is arranged in the third accommodating cavity 103, and the main negative relay 312 is arranged in the fourth accommodating cavity 104.

[0041] Specifically, the mounting base 1 is formed with an accommodating cavity 10, which includes a first accommodating cavity 101, a second accommodating cavity 102, a third accommodating cavity 103, and a fourth accommodating cavity 104. The main positive relay 311, the main negative relay 312, the fast charging positive relay 321, and the fast charging negative relay 322 are removed from the shell. The core of the main positive relay 311 is fixed in the first accommodating cavity 101 by glue pouring, the core of the main negative relay 312 is arranged in the fourth accommodating cavity 104 by glue pouring, the core of the fast charging negative relay 322 is fixed in the third accommodating cavity 103 by glue pouring, and the core of the fast charging positive relay 321 is fixed in the second accommodating cavity 102 by glue pouring.

[0042] In practical application, on the one hand, by setting the accommodating cavities 10 as the first accommodating cavity 101, the second accommodating cavity 102, the third accommodating cavity 103 and the fourth accommodating cavity 104, the relays can be located in different accommodating cavities respectively, so that the mutual interference between the relays can be effectively avoided, and the working environment of each relay is more independent and stable. On the other hand, without setting a plastic shell outside the core of each relay, the body of each accommodating cavity can directly protect and seal the core of each relay, so that the structure of the power distribution box is further simplified, and the cost of the power distribution box is reduced. In addition, by pouring glue to fix the core of each relay, the core of each relay is integrated with the mounting base 1, so that the mounting space of the mounting base 1 occupied by each relay mounting part is reduced, the structure of the power distribution box is simplified, and the space of the mounting base 1 is maximized. Moreover, the pouring glue can improve the heat dissipation capacity of the core of each relay, thereby prolonging the service life of the power distribution box.

[0043] As shown in Figures 2-5 Optionally, the main positive relay 311 is arranged adjacent to the fast charging positive relay 321, and the main negative relay 312 is arranged adjacent to the fast charging negative relay 322.

[0044] Specifically, as shown in Figure 2 On the mounting base 1, the four relays can be arranged in the order of the main negative relay 312, the fast charging negative relay 322, the fast charging positive relay 321 and the fast charging negative relay 322, so that the main positive relay 311 and the fast charging positive relay 321 are adjacent, and the main negative relay 312 and the fast charging negative relay 322 are adjacent. In practical application, since the positive loop and the negative loop are usually separated, arranging the main positive relay 311 adjacent to the fast charging positive relay 321 and arranging the main negative relay 312 adjacent to the fast charging negative relay 322 can help to better isolate circuits of different polarities and facilitate the connection of other devices in the positive and negative loops to the corresponding relays.

[0045] Optionally, the component group further comprises a shunt 33 and a current sensor 34, and the mounting base 1 is further provided with adjacent first and second mounting grooves 11 and 12. The shunt 33 is arranged in the first mounting groove 11, and the current sensor 34 is arranged in the second mounting groove 12. The shunt 33 is arranged adjacent to the main negative relay 312, and the shunt 33 is electrically connected to the main negative relay 312 and the fast charging negative relay 322 respectively. The current sensor 34 is electrically connected to the shunt 33.

[0046] As shown in Figure 2As shown, in particular, the shunt 33 is fixedly connected to the first mounting groove 11, the shape of the first mounting groove 11 is matched with the shape of the shunt 33, the current sensor 34 is fixed in the second mounting groove 12, the shape of the second mounting groove 12 is matched with the shape of the current sensor 34, and the shunt 33 is arranged adjacent to the main negative relay 312. Further, the current passing through the main negative relay 312 and the fast charging negative relay 322 can be detected by the current sensor 34 and the shunt 33. In the embodiment of the application, the current is detected by the shunt 33 and the current sensor 34, which provides double protection for detecting the current, thereby enhancing the circuit protection. By arranging the shunt 33 and the current sensor 34 in the respective corresponding mounting grooves, the shunt 33 and the current sensor 34 can be protected, and the reliability and service life of the distribution box are improved.

[0047] Further, the mounting base 1 is provided with a negative lead-out sheet 18 at one end close to the current sensor 34, one end of the shunt 33 is connected to the negative lead-out sheet 18 through a bolt lap joint, the current sensor 34 is connected to the shunt 33 through a bolt lap joint, the electrical connection between the shunt 33 and the current sensor 34 is realized, and the other end of the shunt 33 is connected to the main negative relay 312 and the fast charging negative relay 322 through a bolt lap joint, the electrical connection between the shunt 33 and the main negative relay 312 and the fast charging negative relay 322 is realized. In actual application, by arranging the current sensor 34 and the shunt 33 adjacent to each other, arranging the shunt 33 adjacent to the main negative relay 312, and arranging the main negative relay 312 adjacent to the fast charging negative relay 322, the length of the lead-out sheet can be reduced, the structure design of the distribution box is further simplified, the amount of the lead-out sheet is reduced, and the cost of the distribution box is reduced. The lead-out sheet can be a copper bar.

[0048] Optionally, the group of components further includes a first fuse 35 and a second fuse 36, the mounting base 1 is further provided with adjacent third and fourth mounting grooves 13 and 14, the first fuse 35 is arranged in the third mounting groove 13, the second fuse 36 is arranged in the fourth mounting groove 14, the second fuse 36 is arranged adjacent to the main positive relay 311, the second fuse 36 is electrically connected to the main positive relay 311 and the fast charging positive relay 321 respectively, and the first fuse 35 is electrically connected to the second fuse 36.

[0049] As Figures 2-6As shown, the first fuse 35 is placed in the third mounting slot 13, and the second fuse 36 is placed in the fourth mounting slot 14. The third mounting slot 13 is shaped to match the shape of the first fuse 35, and the fourth mounting slot 14 is shaped to match the shape of the second fuse 36. The first fuse 35 is electrically connected to the second fuse 36. The second fuse 36 is arranged adjacent to the main positive relay 311. The second fuse 36 is connected to the main positive relay 311 and the main negative relay 312. In this way, the second fuse 36 is electrically connected to the main positive relay 311 and the fast-charging positive relay 321, so that the circuit can be quickly cut off in the event of an overcurrent or short circuit fault, thereby protecting the safety of the entire system. The electrical connection between the first fuse 35 and the second fuse 36 further enhances the protection level of the system, ensuring that the system can operate more reliably under multi-level protection. By placing the first fuse 35 and the second fuse 36 in their respective mounting slots, the first fuse 35 and the second fuse 36 can be protected, thereby improving the reliability and service life of the power distribution box.

[0050] Further, the mounting base 1 is provided with a positive electrode lead-out sheet 17 adjacent to the first fuse 35. One end of the first fuse 35 is connected to the positive electrode lead-out sheet 17 through a bolt lap joint. The other end of the first fuse 35 is connected to the second fuse 36 through a bolt lap joint. In this way, the first fuse 35 is electrically connected to the second fuse 36. One end of the second fuse 36 is connected to the main positive relay 311 and the fast-charging positive relay 321 through a bolt lap joint. In this way, the second fuse 36 is electrically connected to the main positive relay 311 and the fast-charging positive relay 321. In actual application, by arranging the first fuse 35 adjacent to the second fuse 36, and arranging the main positive relay 311 adjacent to the fast-charging positive relay 321, the length of the lead-out sheet can be further reduced, the structure design of the power distribution box can be further simplified, the amount of lead-out sheet can be reduced, and the cost of the power distribution box can be reduced. The lead-out sheet can be a copper bar.

[0051] As shown in Figures 2-6 Optionally, the group of components further includes a pre-charge resistor 37 and a pre-charge relay 38. The mounting base 1 is further provided with a fifth mounting slot 15 and a sixth mounting slot 16 adjacent to each other. The pre-charge resistor 37 is arranged in the fifth mounting slot 15. The pre-charge relay 38 is arranged in the sixth mounting slot 16. The pre-charge relay 38 is arranged adjacent to the second fuse 36. The pre-charge relay 38 is electrically connected to the second fuse 36. The pre-charge relay 38 is electrically connected to the pre-charge resistor 37.

[0052] Specifically, as shown in Figure 4As shown, the fifth mounting slot 15 is arranged below the third mounting slot 13, the sixth mounting slot 16 is arranged below the fourth mounting slot 14, the pre-charge resistor 37 is arranged in the fifth mounting slot 15, and the pre-charge relay 38 is arranged in the sixth mounting slot 16, so that the pre-charge relay 38 is arranged adjacent to the second fuse 36, thereby facilitating the electrical connection between the pre-charge relay 38 and the second fuse 36, reducing the length of the connecting member for electrically connecting the pre-charge relay 38 and the second fuse 36, and further simplifying the structural design of the distribution box. By arranging the pre-charge resistor 37 and the pre-charge relay 38 in the respective corresponding mounting slots, the pre-charge resistor 37 and the pre-charge relay 38 can be protected, and the reliability and service life of the distribution box can be improved.

[0053] Further, the fifth mounting slot 15 and the sixth mounting slot 16 are each provided with a plurality of buckles, the pre-charge resistor 37 is arranged in the fifth mounting slot 15, and the pre-charge relay 38 is arranged in the sixth mounting slot 16, so that the pre-charge resistor 37 can be installed and fixed in the fifth mounting slot 15 by buckling connection, the pre-charge relay 38 can be installed and fixed in the sixth mounting slot 16 by buckling connection, and the installation stability of the pre-charge resistor 37 and the pre-charge relay 38 in the mounting base 1 can be improved.

[0054] Optionally, the distribution box further comprises a self-made circuit board 39 connected to the mounting base 1, and the self-made circuit board 39 is provided with a plurality of connection ports 390, and the component group is respectively fixedly connected with a plurality of plug-in connectors 30, and the plug-in connectors 30 are plugged into the connection ports 390 to electrically connect the self-made circuit board 39 and the component group.

[0055] Specifically, the mounting base 1 is provided with a plurality of fixing members, and the self-made circuit board 39 is fixedly connected to the mounting base 1 by the fixing members. The fixing members can be fixing columns or the like that can be used to fix the position of the self-made circuit board 39, and the structure of the fixing members is not limited in the embodiment of the application.

[0056] Specifically, each component in the component group is provided with a plug-in part 30, and the self-made circuit board 39 is provided with a plug-in port corresponding to each plug-in part 30, and the plug-in port is connected with the plug-in part 30, so that the self-made circuit board 39 is electrically connected with the components in the component group. In the embodiment of the application, the battery management controller and the high-voltage monitoring collector are integrated on the self-made circuit board 39, which has the functions of calculating energy, power and the like based on current data, battery protection, dynamically adjusting charging current, voltage parameters and the like through the self-made circuit board 39, and guaranteeing the safety and reliability of the electrical circuit in the distribution box. The self-made circuit board 39 and each component on the mounting base 1 form a pre-charging circuit, a high-voltage detection circuit and a low-voltage communication circuit, and each circuit is connected through the plug-in part 30, without the need to set a separate copper bar or wire harness from the self-made circuit board 39 to the main positive relay 311 core, the main negative relay 312 core, the pre-charging relay 38 and the current sensor 34, further reducing the cost of the distribution box. The plug-in part 30 can be a plug-in sheet or a plug-in pin.

[0057] Specifically, as shown in Figure 1 The part of the self-made circuit board 39 that is provided with the pre-charging circuit connects the circuit including the high-voltage electrical connection circuit from the pre-charging resistor 37 to the pre-charging relay 38 and the high-voltage electrical connection circuit from the pre-charging relay 38 to the high-voltage positive lead-out sheet 17 on the mounting base 1. The plug-in part 30 on the pre-charging resistor 37 and the pre-charging relay 38 is connected with the plug-in port on the self-made circuit board 39, and the pre-charging circuit is turned on through the high-voltage electrical connection circuit from the pre-charging circuit to the pre-charging relay 38.

[0058] The high-voltage detection circuit is a plurality of high-voltage detection circuits formed by directly connecting the high-voltage detection points including the high-voltage lead-out plug-in part 30 on the first fuse 35, the high-voltage plug-in part 30 of the second fuse 36, the high-voltage positive lead-out sheet 17 on the mounting base 1 and the high-voltage negative lead-out sheet 18 on the mounting base 1 with the self-made circuit board 39 through the plug-in part 30, realizing the function of high-voltage sampling of the self-made circuit board 39.

[0059] The low-voltage communication circuit is a low-voltage communication circuit formed by directly connecting the low-voltage lead-out plug-in parts 30 of the main positive relay 311 core, the main negative relay 312 core, the pre-charging relay 38 and the current sensor 34 with the self-made circuit board 39 through the plug-in part 30, realizing the low-voltage communication function of the self-made circuit board 39.

[0060] Optionally, the connector group further comprises a low-voltage connector 22, which is integrally formed with the mounting base 1, and which is arranged on the same side of the mounting base 1 as the main connector 21 and the fast charging connector 20.

[0061] Specifically, the low-voltage connector 22 and the main connector 21 and the fast charging connector 20 are arranged on the same side of the mounting base 1 and integrally formed with the mounting base 1, and the low-voltage connector 22 is used to connect with external equipment to realize low-voltage communication function. In actual application, by arranging the low-voltage connector 22 and the main connector 21 and the fast charging connector 20 on the same side of the mounting base 1, the available space of the mounting base 1 can be fully utilized, and the integration of the mounting base 1 is improved.

[0062] Optionally, the connector group comprises a fast charging connector housing 200, a main connector housing 210 and a low-voltage connector housing 220, which are integrally formed with the mounting base 1.

[0063] Specifically, the mounting base 1 is a plastic mounting base 1, and the fast charging connector housing 200, the main connector housing 210 and the low-voltage connector housing 220 are integrally formed with the mounting base 1 by one-piece injection molding process. In actual application, by integrally forming the fast charging connector housing 200, the main connector housing 210 and the low-voltage connector housing 220 with the mounting base 1, not only the installation and arrangement of each connector housing on the mounting base 1 can be more stable and reliable, but also the difficulty of installation and arrangement of each connector housing on the mounting base 1 can be reduced, i.e. without the need to separately arrange each connector housing on the mounting base 1, which can improve the integration of the power distribution box and the production efficiency of the power distribution box. The one-piece injection molding process provides better electrical insulation performance and reduces mold and process costs during production. Due to the reduction of high-voltage assembly components, the failure points are also reduced, and the stability of the system is improved; the integrated design helps to optimize the thermal management of the power distribution box and improve the overall performance and life of the equipment. During the processing, the plastic shell of the mounting housing itself is the connector mold, thereby greatly saving the product processing equipment, clamps, molds and other resources, and the product cost is optimal. Moreover, the fast charging connector 20, the main connector 21 and the low-voltage connector 22 are the product parts themselves, which have the waterproof and air leakage functions, realize the simplest structure of the connector, do not need any auxiliary sealing ring, glue and other auxiliary structures, and further reduce the size of the power distribution box.

[0064] Further, the fast charging connector housing 200 and the main connector housing 210 can be as shown in Figure 2The diagram shows a connected structure, but structures can also be set at intervals. The choice can be made flexibly based on the actual situation.

[0065] Furthermore, the low-voltage connector housing 220 is positioned diagonally below the main connector housing 210 and the fast-charging connector housing 200. This ensures the stability of the fit between the main connector housing 210 and the low-voltage connector housing 220 and their corresponding external components, while also ensuring their independence from each other and preventing interference when they fit with their corresponding external components.

[0066] Furthermore, the connector assembly also includes a plurality of electrical connectors 23, which are respectively embedded in the fast charging connector housing 200, the main connector housing 210 and the low-voltage connector housing 220, and the electrical connectors 23 are electrically connected to the component assembly.

[0067] Specifically, the main connector housing 210 includes a main connector negative housing 2101 and a main connector positive housing 2102. The electrical connector 23 embedded in the main connector negative housing 2101 is a high-voltage negative connector, and the electrical connector 23 embedded in the main connector positive housing 2102 is a high-voltage positive connector. The high-voltage negative connector is connected to the main negative relay 312, and the high-voltage positive connector is connected to the main positive relay 311. The fast charging connector housing 200 includes a fast charging connector negative housing 2001 and a fast charging connector positive housing 2002. The electrical connector 23 embedded in the fast charging connector negative housing 2001 is a fast charging negative connector, and the electrical connector 23 embedded in the fast charging connector positive housing 2002 is a fast charging positive connector. The fast charging negative connector is connected to the fast charging negative relay 322, and the fast charging positive connector is connected to the fast charging positive relay 321. The electrical connector 23 embedded in the low-voltage housing is a low-voltage electrical connector 23, which is used for low-voltage communication.

[0068] In practical applications, the high-voltage positive and negative electrical connectors 23 on the main connector 21, the positive and negative electrical connectors 23 of the fast charging connector 20, and the low-voltage electrical connectors in the low-voltage connector 22 are positioned in the plastic mold of the mounting base 1 and are injection molded as inserts, achieving the one-piece injection molding of the mounting base 1, the main connector housing 210, the fast charging connector housing 200, the low-voltage connector housing 220, and the electrical connectors 23 arranged in the housings, thereby enabling the mounting base 1 to realize the functions of the connectors through its special-shaped structure, and thereby improving the integration of the power distribution box. By arranging each electrical connector 23 inside the corresponding housing, the main connector 21, the low-voltage connector 22, and the fast charging connector 20 can be formed accordingly, and the available space on the mounting base 1 can be fully utilized. The electrical connectors 23 can be made of metal connecting pieces, which can be stamped structures. The material utilization rate of the stamped structure can reach more than 92%, and the material and processing costs are the lowest, thereby reducing the cost of the power distribution box.

[0069] As shown in Figure 1 , the mounting base 1 has a positive lead-out piece 17 near the first fuse 35 and a negative lead-out piece 18 near the current sensor 34. The positive lead-out piece 17 is used for electrical connection with the positive electrode of the battery device, and the negative lead-out piece 18 is used for electrical connection with the negative electrode of the battery device. The terminals of the main positive relay 311, the main negative relay 312, the fast charging positive relay 321, and the fast charging negative relay 322 are fixed on the positive lead-out piece 17 and the negative lead-out piece 18 by bolts, and the terminals of the main positive relay 311 and the main negative relay 312 are directly connected to the positive and negative electrical connectors of the main connector 21 by bolts, and the terminals of the fast charging positive relay 321 and the fast charging negative relay 322 are connected to the positive and negative electrical connectors of the fast charging connector 20 by bolts.

[0070] Referring to Figure 7 , the electrical circuit composed of each component in the power distribution box and the constituent components in the embodiment of the application can include:

[0071] The components constituting the positive circuit include the first fuse 35, the second fuse 36, the main positive relay 311 core, and the high-voltage positive lead-out piece 17 on the mounting base 1;

[0072] The components constituting the negative circuit include the current sensor 34, the shunt 33, the main negative relay 312 core, and the high-voltage negative lead-out piece 18 on the mounting base 1;

[0073] The components constituting the pre-charge circuit include the first fuse 35, the second fuse 36, the pre-charge resistor 37, the pre-charge relay 38, the self-made circuit board 39, and the high-voltage positive lead-out piece 17 on the mounting base 1;

[0074] The components constituting the fast charging positive electrode circuit include the first fuse 35, the second fuse 36, the fast charging positive electrode relay core, and the high-voltage positive electrode lead-out sheet 17 on the mounting base 1.

[0075] The components constituting the fast charging negative electrode circuit include the current sensor 34, the shunt 33, the fast charging negative electrode relay core, and the high-voltage negative electrode lead-out sheet 18 on the mounting base 1.

[0076] The components constituting the high-voltage detection circuit 1 include the high-voltage lead-out sheet at the end of the main positive relay 311 and the self-made circuit board 39.

[0077] The components constituting the high-voltage detection circuit 2 include the high-voltage lead-out sheet of the pre-charging resistor 37 and the self-made circuit board 39.

[0078] The components constituting the high-voltage detection circuit 3 include the high-voltage lead-out sheet of the fast charging connector 20 positive electrode and the self-made circuit board 39.

[0079] The components constituting the high-voltage detection circuit 4 include the high-voltage lead-out sheet of the fast charging connector 20 negative electrode and the self-made circuit board 39.

[0080] The components constituting the high-voltage detection circuit 5 include the high-voltage connector negative electrode lead-out sheet 18 on the mounting base 1 and the self-made circuit board 39.

[0081] The components constituting the high-voltage detection circuit 6 include the high-voltage lead-out sheet at the end of the first fuse 35 and the self-made circuit board 39.

[0082] The components constituting the high-voltage detection circuit 7 include the battery device and the self-made circuit board 39.

[0083] The components constituting the low-voltage communication circuit include the low-voltage lead-out sheet of the main positive relay 311, the low-voltage lead-out sheet of the main negative relay 312, the low-voltage lead-out sheet of the fast charging positive electrode relay 321, the low-voltage lead-out sheet of the fast charging negative electrode relay 322, the low-voltage lead-out sheet of the pre-charging relay 38, and the self-made circuit board 39.

[0084] It should be noted that the above description of each circuit is only an example, and the components in each circuit can be flexibly arranged according to actual conditions.

[0085] Optionally, the power distribution box includes a protective cover 4, which is arranged on the mounting base 1 and can be connected to the mounting base 1 through clamping or bolt fixing to protect the various devices arranged on the mounting base 1.

[0086] In a second aspect, the embodiments of the present application also provide a battery device, which includes the power distribution box according to any of the above embodiments.

[0087] Specifically, the battery device can be a power battery pack or an energy storage cabinet; in actual application, the mounting structure of the mounting base in the power distribution box can be changed according to the structure of the specific battery device to match the mounting position of the specific battery device. The components in the power distribution box are directly electrically connected with the battery device, and the battery device is charged and discharged through the power distribution box. The specific specifications of the corresponding components in the power distribution box can be adjusted according to the charging and discharging parameters of the specific battery device.

[0088] It should be noted that in the embodiments of the present application, the structure of the power distribution box is the same as that of the power distribution box described in any of the above embodiments, and the beneficial effects are similar, which will not be repeated here.

[0089] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0090] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A distribution box applied to a battery device, characterized by, The distribution box comprises: a mounting base having a receiving cavity; a connector group comprising a fast charging connector and a main connector, the fast charging connector and the main connector being integrally formed with the mounting base, the fast charging connector and the main connector being at least partially exposed from the receiving cavity; and a component group comprising a main relay group and a fast charging relay group, the main relay group and the fast charging relay group being arranged in the receiving cavity and at least partially exposed from the receiving cavity; wherein the main relay group is electrically connected with the main connector, and the fast charging relay group is electrically connected with the fast charging connector.

2. The power distribution box of claim 1, wherein, The main relay group comprises a main positive relay and a main negative relay, the fast charging relay group comprises a fast charging positive relay and a fast charging negative relay, and the receiving cavity comprises a first receiving cavity, a second receiving cavity, a third receiving cavity and a fourth receiving cavity arranged in intervals, the main positive relay being arranged in the first receiving cavity, the fast charging positive relay being arranged in the second receiving cavity, the fast charging negative relay being arranged in the third receiving cavity, and the main negative relay being arranged in the fourth receiving cavity.

3. The power distribution box of claim 2, wherein, The main positive relay is arranged adjacent to the fast charging positive relay, and the main negative relay is arranged adjacent to the fast charging negative relay.

4. The power distribution box of claim 3, wherein, The component group further comprises a shunt and a current sensor, the mounting base is further provided with a first mounting groove and a second mounting groove arranged in intervals, the shunt is arranged in the first mounting groove, the current sensor is arranged in the second mounting groove, the shunt is arranged adjacent to the main negative relay, the shunt is electrically connected with the main negative relay and the fast charging negative relay respectively, and the current sensor is electrically connected with the shunt.

5. The power distribution box of claim 3, wherein, The component group further comprises a first fuse and a second fuse, the mounting base is further provided with a third mounting groove and a fourth mounting groove arranged in intervals, the first fuse is arranged in the third mounting groove, the second fuse is arranged in the fourth mounting groove, the second fuse is arranged adjacent to the main positive relay, the second fuse is electrically connected with the main positive relay and the fast charging positive relay respectively, and the first fuse is electrically connected with the second fuse.

6. The power distribution box of claim 5, wherein, The component group further comprises a pre-charging resistor and a pre-charging relay, the mounting base is further provided with a fifth mounting groove and a sixth mounting groove arranged in intervals, the pre-charging resistor is arranged in the fifth mounting groove, the pre-charging relay is arranged in the sixth mounting groove, the pre-charging relay is arranged adjacent to the second fuse, the pre-charging relay is electrically connected with the second fuse, and the pre-charging relay is electrically connected with the pre-charging resistor.

7. The power distribution box of any one of claims 1-6, wherein, The distribution box further comprises a self-made circuit board connected with the mounting base; the self-made circuit board is provided with a plurality of connection ports, the component group is fixedly connected with a plurality of plug-in connectors respectively, the plug-in connectors are plugged into the connection ports to electrically connect the self-made circuit board with the component group.

8. The power distribution box of claim 1, wherein, The connector set further comprises a low-voltage connector which is integrally formed with the mounting base, and which is arranged in a spaced manner with the main connector and the fast charging connector on the same side of the mounting base.

9. The power distribution box of claim 8, wherein, The connector set comprises a fast charging connector shell, a main connector shell and a low-voltage connector shell, which are integrally formed with the mounting base.

10. The power distribution box of claim 8 or 9, wherein, The connector set further comprises a plurality of electrical connectors which are respectively embedded in the fast charging connector shell, the main connector shell and the low-voltage connector shell, and which are electrically connected with the component set.

11. A battery device characterized by comprising: The battery device comprises the power distribution box according to any one of claims 1-10.

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