Integrated module, power distribution device, battery pack and electric equipment

Abstract

The utility model discloses an integrated module, a power distribution device, a battery pack and electric equipment. The integrated module comprises a shell, a relay and a fuse. The shell is provided with an accommodating cavity. The relay is arranged in the containing cavity, the relay is used for being connected with a battery management controller of the power distribution device, the relay is electrically connected with a first connector, and the first connector penetrates through the shell. The fuse is arranged in the containing cavity, the fuse is used for being connected with the battery management controller, the fuse is electrically connected with a second connector, the second connector penetrates through the shell, the fuse is electrically connected with the relay through a first electric connecting piece, and the relay comprises a first end and a second end which are opposite to each other; the first electric connecting piece and the first connector are both electrically connected with the first end of the relay. In the application, compared with the conventional relay and the fuse which are independent elements, the relay and the fuse can be installed in the battery pack as a whole, so that the utilization rate of the internal space of the battery pack is improved, and the miniaturization of the battery pack is further realized.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to an integrated module, a power distribution device, a battery pack and an electrical device. Background Art

[0002] The power distribution device is a common device in the battery pack. The power distribution device can open and close the circuit to control the charging and discharging of the battery pack. Generally, the power distribution device includes electrical components such as relays, fuses and current collection components. However, these electrical components are independent components. When installed inside the battery pack, the space size is large, which affects the miniaturization of the battery pack. Utility Model Content

[0003] Embodiments of the present application provide an integrated module, a power distribution device, a battery pack, and electrical equipment.

[0004] The integrated module of certain embodiments of the present application is applied to a power distribution device, and the integrated module includes a housing, a relay and a fuse. The housing is provided with a receiving cavity. The relay is arranged in the receiving cavity, and the relay is used to connect to the battery management controller of the power distribution device. The relay is electrically connected to a first connector, and the first connector passes through the housing. The fuse is arranged in the receiving cavity, and the fuse is used to connect to the battery management controller. The fuse is electrically connected to a second connector, and the second connector passes through the housing. The fuse is electrically connected to the relay through a first electrical connector, and the relay includes a first end and a second end opposite to each other, and the first electrical connector and the first connector are both electrically connected to the first end of the relay.

[0005] In some embodiments, a distance between a side of the first electrical connector facing away from the first end of the relay and the first end of the relay is smaller than a distance between a side of the first connector facing away from the first end of the relay and the first end of the relay.

[0006] In some embodiments, the housing includes a first side wall and a second side wall opposite to each other, and a peripheral wall located between the first side wall and the second side wall, and the first side wall, the second side wall and the peripheral wall together form a receiving cavity;

[0007] The fuse includes a first end and a second end opposite to each other, the first end of the fuse is electrically connected to the relay through the first electrical connector, the second end of the fuse is electrically connected to the second connector, the extension direction of the fuse is the same as the extension direction of the relay, and the first connector and the second connector are both disposed through the first side wall.

[0008] In some embodiments, the integrated module further includes a second electrical connector, one end of the second electrical connector is electrically connected to the second end of the fuse, and the other end of the second electrical connector is electrically connected to the second connector.

[0009] In some embodiments, the second electrical connector includes a connecting portion, an extension portion, and a bending portion that are bent and connected to each other, the connecting portion is electrically connected to the second end of the fuse, the extension portion extends from the connecting portion toward the first side wall and is spaced from the relay, and the bending portion extends from the extension portion toward one end of the first side wall in a direction away from the relay and is electrically connected to the second connector.

[0010] In some embodiments, the shell includes a supporting portion, the supporting portion extends from the second side wall toward the first side wall and is opposite to the bent portion, and the bent portion is supported by the supporting portion.

[0011] In certain embodiments, the integrated module further includes a low voltage connector, which is electrically connected to the relay and passes through the housing.

[0012] In some embodiments, the housing is provided with a plurality of through holes, and the through holes penetrate through the peripheral wall of the housing and correspond to the fuses.

[0013] In some embodiments, the shell further includes a mounting portion, wherein the mounting portion extends from an outer peripheral wall of the shell toward a direction away from the shell, and the mounting portion is used for mounting the shell on a battery pack.

[0014] The power distribution device of the battery pack of certain embodiments of the present application comprises a pre-charging module and an integrated module as described in any of the above embodiments. The pre-charging module is electrically connected to the integrated module and is used to jointly control the operation of the battery pack.

[0015] In some embodiments, the power distribution device further includes a monitoring module and a battery management controller. The monitoring module is used to collect the voltage and current of the battery pack. The battery management controller is electrically connected to the monitoring module, the integrated module and the pre-charging module, and is used to obtain the voltage and current of the battery pack collected by the monitoring module, and control the operation of the battery pack according to the voltage and current of the battery pack.

[0016] The battery pack of certain embodiments of the present application comprises a battery pack and a power distribution device as described in any of the above embodiments. The power distribution device is electrically connected to the battery pack and is used to control the charging and discharging of the battery pack.

[0017] The electrical equipment of certain embodiments of the present application includes the battery pack described in the above embodiments.

[0018] In the integrated module, power distribution device, battery pack and electrical equipment of the embodiments of the present application, the relay and the fuse are both accommodated in the shell, and the fuse is electrically connected to the relay through a first electrical connector. Therefore, compared with traditional relays and fuses that are independent components, the relay and the fuse can be installed in the battery pack as a whole, so that the space occupied by the relay and the fuse is smaller, thereby improving the utilization rate of the internal space of the battery pack, and realizing the miniaturization of the battery pack.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a schematic diagram of the structure of an electrical device in some embodiments of the present application;

[0022] Figure 2 is a circuit diagram of a battery pack according to certain embodiments of the present application;

[0023] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of an integrated module of a battery pack in an electrical device shown;

[0024] Figure 4 yes Figure 1 A three-dimensional exploded schematic diagram of the integrated module of the battery pack in the electrical equipment shown.

[0025] Description of main component symbols:

[0026] 2000, electrical equipment, 2100, vehicle body;

[0027] 1000, battery pack; 100, power distribution device; 200, battery pack; 300, charging and discharging circuit;

[0028] 10. integrated module; 11. housing; 110. receiving cavity; 111. first side wall; 113. second side wall; 115. peripheral wall; 1151. peripheral wall; 116. mounting portion; 117. supporting portion; 118. through hole; 13. relay; 131. main positive relay; 133. main negative relay; 135. first end of relay; 137. second end of relay; 14. fuse; 141. first end of fuse; 143. second end of fuse; 15. first electrical connector; 16. first connector; 17. second connector; 18. second electrical connector; 181. connecting portion; 183. extending portion; 185. bending portion; 19. low voltage connector;

[0029] 20. Pre-charging module; 21. Pre-charging relay; 23. Pre-charging resistor; 30. Monitoring module; 31. High-voltage sampling unit; 33. Shunt; 40. Battery management controller. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] See also Figure 1 , the electric device 2000 of certain embodiments of the present application includes a battery pack 1000. The electric device 2000 includes but is not limited to vehicles, energy storage cabinets or aircraft. Specifically, in certain embodiments, when the electric device 2000 includes a vehicle, the vehicle includes a body 2100, and the battery pack 1000 is installed in the body 2100. The battery pack 1000 can provide a power source for the vehicle to enable the vehicle to operate normally. It should be noted that vehicles include but are not limited to pure electric vehicles, hybrid vehicles and other passenger vehicles or large-scale engineering vehicles whose working conditions are not very severe.

[0037] Among them, since the electric device 2000 in this embodiment includes the battery pack 1000, it can be understood that the electric device 2000 also includes at least the same beneficial effects as the battery pack 1000. Therefore, for the beneficial effects of the electric device 2000, please refer to the beneficial effects of the battery pack 1000 described below.

[0038] Please continue reading Figure 1 The battery pack 1000 of some embodiments of the present application includes a battery pack 200 and a power distribution device 100. The power distribution device 100 is electrically connected to the battery pack 200, and the power distribution device 100 is used to control the charging and discharging of the battery pack 200.

[0039] The power distribution device 100 is disposed in the battery pack 1000 and is electrically connected to the battery group 200. Thus, the power distribution device 100 can realize functions such as charge and discharge control, temperature monitoring and protection (including overcharge protection, over-discharge protection and short-circuit protection, etc.) of the battery group 200, thereby improving the stability of the battery pack 1000 in supplying power to the power-consuming device 2000 and ensuring the stable operation of the power-consuming device 2000. It is understandable that the power distribution device 100 can be designed to match the different power-consuming devices 2000 to meet the use requirements of different power-consuming devices 2000.

[0040] Please combine Figure 2 In some embodiments, the battery pack 1000 may include at least one battery pack 200, wherein the number of battery packs 200 in the battery pack 1000 may be adjusted according to different application scenarios of the battery pack 1000. Further, the battery pack 200 may include multiple batteries, and the number of batteries in the battery pack 200 may be adjusted according to the application scenario and capacity of the battery pack 200. It should be noted that in some embodiments, the multiple batteries in the battery pack 200 may be connected in series, in parallel or in a mixed manner, and the mixed manner means that the multiple batteries are both connected in series and in parallel. Among them, since the battery pack 1000 in this embodiment includes a power distribution device 100 and at least one battery pack 200, it can be understood that the battery pack 1000 at least also includes the same beneficial effects as the power distribution device 100 and the battery pack 200. Therefore, for the beneficial effects of the battery pack 1000, please refer to the beneficial effects of the power distribution device 100 below.

[0041] See also Figure 1 and Figure 2 In some embodiments of the present application, the power distribution device 100 of the battery pack includes an integrated module 10 and a pre-charging module 20. The integrated module 10 is electrically connected to the pre-charging module 20 and is used to jointly control the operation of the battery pack 1000. It should be noted that in some embodiments, the power distribution device 100 may include but is not limited to a battery disconnect unit (Battery Disconnect Unit, BDU) and a high-voltage power distribution unit (Power Distribution Unit, PDU).

[0042] Specifically, please combine Figure 3 and Figure 4In some embodiments, the integrated module 10 includes a housing 11, a relay 13 and a fuse 14. The housing 11 is provided with a receiving cavity 110. The relay 13 is arranged in the receiving cavity 110, and the relay 14 is used to connect to the battery management controller 40 of the power distribution device 100. The relay 13 is electrically connected to a first connector 16, and the first connector 16 passes through the housing 11. The fuse 14 is arranged in the receiving cavity 110, and the fuse 14 is used to connect to the battery management controller 40. The fuse 14 is electrically connected to a second connector 17, and the second connector 17 passes through the housing 11. The fuse 14 is electrically connected to the relay 13 through a first electrical connector 15. The relay 13 includes a first end 135 and a second end 137 opposite to each other. The first electrical connector 15 and the first connector 16 are both electrically connected to the first end 135 of the relay 13. It should be noted that in some embodiments, the first connector 16 and the second connector 17 are both high-voltage connectors. The first electrical connector 15 includes but is not limited to a copper bar, a wire harness or an electrical connector, that is, the relay 13 and the fuse 14 can be electrically connected by a copper bar, a wire harness or an electrical connector. In the embodiment of the present application, the first electrical connector 15 is described as a copper bar.

[0043] The housing 11 refers to a component that can isolate the relay 13 and the fuse 14 from the external environment. The housing 11 can be made of one or more insulating materials such as plastic, rubber, glass or ceramic. Therefore, the setting of the housing 11 can prevent the operator from directly contacting the relay 13 and the fuse 14, thereby improving the safety performance of the integrated module 10; on the other hand, it can reduce or even avoid the influence of other electrical components in the power distribution device 100 on the integrated module 10, for example, avoiding electromagnetic interference from other electrical components to the integrated module 10, which causes the integrated module 10 to fail to work normally, thereby improving the working stability of the integrated module 10.

[0044] The relay 13 is an electrical component that turns on or off the controlled circuit when the input quantity (such as voltage and current) reaches a specified value. The fuse 14 is an electrical component that uses the heat generated by itself to melt the fuse and disconnect the circuit when the current exceeds the specified value. In the present application, the first end 135 of the relay 13 is electrically connected to the first connector 16, and the first end 135 of the relay 13 is electrically connected to one end of the fuse 14 through the first electrical connector 15, and the other end of the fuse 14 is electrically connected to the second connector 17, so that the relay 13 and the fuse 14 can be connected to the charge and discharge circuit 300 of the battery pack 200 together to protect the charge and discharge circuit 300, thereby improving the working stability of the battery pack 1000.

[0045] Specifically, in some embodiments, the integrated module 10 can be electrically connected to other electrical components through the first connector 16 and the second connector 17 to jointly form a charge and discharge circuit 300 of the battery pack 200. For example, the current generated by the battery pack 200 can enter the inside of the relay 13 through the first connector 16, flow into the fuse 14 through the first electrical connector 15 between the relay 13 and the fuse 14, and then flow out through the second connector 17 electrically connected to the fuse 14.

[0046] In the related art, the fuse is electrically connected to the relay using a copper bar, wherein the copper bar needs to be connected and fixed to one of the two terminals of the relay using fasteners (such as bolts, etc.). At this time, most of the structures of the fasteners (such as bolt heads and gaskets, etc.) are located outside the relay 13 and the fuse 14. On the one hand, this will cause the user to directly contact the fasteners, thereby causing safety problems; on the other hand, the fasteners are prone to interfere with other structures, thereby affecting the normal assembly of the relay and the fuse in the battery pack. In the present application, the first electrical connector 15 is electrically connected to the first end 135 of the relay 13 by welding. Therefore, compared with the use of fasteners for connection and fixing, on the one hand, it can minimize the possibility of direct contact between the operator and the electrical components inside the housing 11, thereby improving the safety of the integrated module 10; on the other hand, it can reduce or even avoid the possibility of interference between the integrated module 10 and other structures, thereby ensuring the normal assembly of the integrated module 10.

[0047] In addition, the first electrical connector 15 is accommodated in the accommodating cavity 110, thereby reducing the size of the integrated module formed by the relay 13 and the fuse 14, that is, the overall size of the integrated module 10 formed by the shell 11, the relay 13 and the fuse 14 is smaller, which is conducive to the miniaturization of the battery pack 1000.

[0048] In some embodiments, the distance between the side of the first electrical connector 17 facing away from the first end 135 of the relay 13 and the first end 135 of the relay 13 is smaller than the distance between the side of the first connector 16 facing away from the first end 135 of the relay 13 and the first end 135 of the relay 13. This can reduce the space occupied by the first electrical connector 17 and the fuse 14 in the direction from the first end 135 of the relay 13 to the second end 137 of the relay 13, thereby facilitating the miniaturization of the integrated module 10 and the battery pack 1000.

[0049] In some embodiments, the relay 13 and the fuse 14 can be installed in the housing 11 by welding, bonding, snap connection or threaded connection, thereby improving the structural stability of the integrated module 10 and preventing the relay 13 and the fuse 14 in the integrated module 10 from shaking and causing the electrical connection between the integrated module 10 and other electrical components to fail, thereby improving the working stability of the battery pack 1000.

[0050] In the power distribution device 100 of the embodiment of the present application, the relay 13 and the fuse 14 are both accommodated in the housing 11, and the fuse 14 is electrically connected to the relay 13 via the first electrical connector 15. Therefore, compared with the traditional relay and fuse as independent components, the relay 13 and the fuse 14 can be installed as a whole in the battery pack 1000, so that the space occupied by the relay 13 and the fuse 14 is smaller, thereby improving the utilization rate of the internal space of the battery pack 1000, and realizing the miniaturization of the battery pack 1000.

[0051] In addition, the first electrical connector 15 and the first connector 16 are both electrically connected to the first end 135 of the relay 13. Therefore, compared with the traditional relay including two terminals (i.e., connectors), the relay 13 in the present application only needs to be provided with one terminal (i.e., the first connector 16), thereby reducing the production cost of the relay 13.

[0052] See also Figure 2 and Figure 4 In some embodiments, the relay 13 in the integrated module 10 can be a main positive relay 131, that is, the integrated module 10 is used in the charging and discharging circuit 300 near the positive electrode of the battery pack 200 to protect the charging and discharging circuit 300. In this case, compared with the main positive relay 131 and the fuse 14 in the traditional power distribution device 100 as independent components, the integrated main positive relay 131 and the fuse 14 occupy a smaller space size, thereby improving the utilization rate of the internal space of the battery pack 1000, thereby realizing the miniaturization of the battery pack 1000. Please continue to read Figure 2 and Figure 4 In other embodiments, the relay 13 in the integrated module 10 may be a main negative relay 133, that is, the integrated module 10 is used in the charging and discharging circuit 300 near the negative electrode of the battery pack 200 to protect the charging and discharging circuit 300. In this case, compared with the main negative relay 133 and the fuse 14 in the traditional power distribution device 100 as independent components, the integrated main negative relay 133 and the fuse 14 occupy a smaller space size, thereby improving the utilization rate of the internal space of the battery pack 1000, thereby realizing the miniaturization of the battery pack 1000.

[0053] It is understandable that, in some embodiments, the power distribution device 100 may include only one integrated module 10. For example, one integrated module 10 includes a housing 11, a main positive relay 131 and a fuse 14. In this case, the main negative relay 133 in the power distribution device 100 is an independent component; for another example, one integrated module 10 includes a housing 11, a main negative relay 133 and a fuse 14. In this case, the main positive relay 131 in the power distribution device 100 is an independent component. In other embodiments, the power distribution device 100 may include two integrated modules 10. Among them, one integrated module 10 includes a housing 11, a main positive relay 131 and a fuse 14, and the other integrated module 10 includes a housing 11, a main negative relay 133 and a fuse 14. In the present application, the power distribution device 100 includes two integrated modules 10 , that is, one integrated module 10 includes a housing 11 , a main positive relay 131 and a fuse 14 , and the other integrated module 10 includes a housing 11 , a main negative relay 133 and a fuse 14 .

[0054] The power distribution device 100 is further explained below with reference to the accompanying drawings.

[0055] See also Figure 1 and Figure 2 In some embodiments, the pre-charging module 20 may include a pre-charging relay 21, wherein the pre-charging relay 21 is an electrical component that can start and disconnect the pre-charging circuit to protect the electrical components (such as the integrated module 10) and the charging and discharging circuit 300 from voltage shocks. In the present application, the pre-charging relay 21 can be electrically connected to the integrated module 10 in parallel, so that the setting of the pre-charging relay 21 can prevent the electrical components and the charging and discharging circuit 300 in the battery pack 1000 from being damaged, and improve the working stability of the battery pack 1000.

[0056] Furthermore, in some embodiments, the pre-charging module 20 may also include a pre-charging resistor 23, wherein the pre-charging resistor 23 is an electrical component capable of limiting the output current of the battery pack 200. In the present application, the pre-charging resistor 23 is connected in series with the pre-charging relay 21, and the pre-charging resistor 23 and the pre-charging relay 21 are electrically connected to the integrated module 10 in parallel, thereby the setting of the pre-charging resistor 23 can prevent the electrical components and the charging and discharging circuit 300 in the battery pack 1000 from being damaged, and further improve the working stability of the battery pack 1000.

[0057] In some embodiments, when the pre-charging module 20 includes the pre-charging relay 21 and the pre-charging resistor 23, the pre-charging relay 21 and the pre-charging resistor 23 may be independent components. In other words, the pre-charging relay 21 and the pre-charging resistor 23 may be installed separately in the battery pack 1000, thereby improving the working stability of the battery pack 1000. In other embodiments, when the pre-charging module 20 includes the pre-charging relay 21 and the pre-charging resistor 23, the pre-charging relay 21 and the pre-charging resistor 23 may also form an integrated module structure together. Therefore, compared with the pre-charging relay 21 and the pre-charging resistor 23 being independent components, the integrated pre-charging relay 21 and the pre-charging resistor 23 occupy a smaller space size, thereby improving the working stability of the battery pack 1000 while also improving the utilization rate of the internal space of the battery pack 1000, thereby miniaturizing the battery pack 1000.

[0058] Please continue reading Figure 1 and Figure 2 In some embodiments, the power distribution device 100 further includes a monitoring module 30 and a battery management controller 40 (Battery Management System, BMS). The monitoring module 30 is used to collect the voltage and current of the battery pack 1000. The battery management controller 40 is electrically connected to the monitoring module 30, the integrated module 10 and the pre-charging module 20. The battery management controller 40 is used to obtain the voltage and current of the battery pack 1000 collected by the monitoring module 30, and control the operation of the battery pack 1000 according to the voltage and current of the battery pack 1000. Specifically, in this embodiment, compared with at least one of the monitoring module 30 and the battery management controller 40 being arranged outside the power distribution device 100, the monitoring module 30 and the battery management controller 40 are both integrated in the power distribution device 100, which can improve the utilization rate of the internal space of the power distribution device 100, realize the miniaturization of the power distribution device 100, and thus realize the miniaturization of the battery pack 1000.

[0059] In some embodiments, the monitoring module 30 may include a high voltage sampling unit 31 (High Voltage Supervising Unit, HVSU). The high voltage sampling unit 31 is an electrical component with functions such as current sampling, voltage or sintering detection and leakage detection. In the present application, the high voltage sampling unit 31 can collect information such as temperature, current and voltage of the charge and discharge circuit 300 of the battery pack 200, thereby protecting the charge and discharge circuit 300 of the battery pack 200, which is beneficial to the stable operation of the battery pack 1000 and improves the safety of the battery pack 1000.

[0060] Furthermore, in some embodiments, the monitoring module 30 may also include a shunt 33 (Shunt). The shunt 33 is an electrical component with a current detection function. In the present application, the shunt 33 can form a charge and discharge circuit 300 of the battery pack 200 together with the integrated module 10, the pre-charge module 20, the main negative relay 133 and the fuse 14, and the shunt 33 can collect the current of the charge and discharge circuit 300 of the battery pack 200, thereby ensuring the current stability of the charge and discharge circuit 300, which is beneficial to the stable operation of the battery pack 1000 and improves the safety of the battery pack 1000.

[0061] In some embodiments, the battery management controller 40 can be electrically connected to the monitoring module 30 by means of a copper bus, a wiring harness or an electrical connection sheet, so that the battery management controller 40 can obtain the current and voltage collected by the monitoring module 30 (including the high-voltage sampling unit 31 and the shunt 33), so as to monitor whether the charge and discharge circuit 300 of the battery pack 200 is damaged (such as short circuit or sintering, etc.), which is beneficial to the stable operation of the battery pack 1000 and improves the safety of the battery pack 1000. In addition, the battery management controller 40 can be electrically connected to the integrated module 10, the pre-charge module 20 and the main negative relay 133 by means of a copper bus, a wiring harness or an electrical connection sheet, so that the battery management controller 40 can control the working state of the integrated module 10, the pre-charge module 20 and the main negative relay 133 (such as power on or power off, etc.), so as to control the operation of the battery pack 1000.

[0062] See also Figure 3 and Figure 4 In some embodiments, the housing 11 includes a first side wall 111, a second side wall 113, and a peripheral wall 115 located between the first side wall 111 and the second side wall 113. The first side wall 111, the second side wall 113, and the peripheral wall 115 are combined to form a receiving cavity 110. The relay 13 and the fuse 14 are both received in the receiving cavity 110, so that the housing 11, the relay 13, and the fuse 14 can form an integrated module. Among them, the receiving cavity 110 can include a variety of different shapes and sizes. For example, the receiving cavity 110 can be a rectangular parallelepiped, a cylindrical shape, a hexagonal prism shape, etc. It can be understood that in some embodiments, the shape of the receiving cavity 110 can be determined according to the shape and size of the relay 13 and the fuse 14.

[0063] In some embodiments, the first connector 16 and the second connector 17 are both installed on the same side wall of the shell 11. In other words, the first connector 16 and the second connector 17 are located on the same side of the shell 11. Compared with the first connector 16 and the second connector 17 being installed on different side walls of the shell 11, for example, the first connector 16 is installed on the first side wall 111 of the shell 11, and the second connector 17 is installed on the second side wall 113 or the peripheral wall 115. The first connector 16 and the second connector 17 are both installed on the same side wall of the shell 11. On the one hand, the size of the integrated module 10 in the length direction (i.e., the direction from the first side wall 111 to the second side wall 113, or the direction from the second side wall 113 to the first side wall 111) can be reduced, that is, the overall size of the integrated module 10 can be reduced, thereby not only reducing the possibility of interference between the first connector 16 and the second connector 17 and other electrical components, but also realizing the battery pack 1000 ( Figure 1 On the other hand, it can facilitate the electrical connection between the integrated module 10 and other electrical components, thereby improving the assembly efficiency of the power distribution device 100. In the present application, the first connector 16 and the second connector 17 are both disposed through the first side wall 111.

[0064] If the relay 13 is installed in the battery pack 1000 by bonding or other non-detachable connection methods, then when the relay 13 is damaged and needs to be replaced, it is necessary to replace the entire power distribution device 100 or even the entire battery pack 1000, which results in a high use cost of the electrical equipment 2000. In the embodiment of the present application, the housing 11 may also include a mounting portion 116, which extends from the outer peripheral wall 1151 of the housing 11 in a direction away from the housing 11, and the mounting portion 116 is used for the housing 11 to be installed in the battery pack 1000. Specifically, the operator can detachably install the housing 11 in the battery pack 1000 through fasteners (such as bolts, etc.) or connecting elements such as snaps. Therefore, when the relay 13 needs to be replaced, the operator only needs to remove the integrated module 10 from the battery pack 1000 for replacement, without replacing the entire power distribution device 100 or even the entire battery pack 1000, thereby reducing the use cost of the electrical equipment 2000.

[0065] See also Figure 3 and Figure 4 In some embodiments, the fuse 14 includes a first end 141 and a second end 143 relative to each other, the first end 141 of the fuse 14 is electrically connected to the relay 13 through the first electrical connector 15, the second end 143 of the fuse 14 is electrically connected to the second connector 17, and the extension direction of the fuse 14 is the same as the extension direction of the relay 13.

[0066] Specifically, the extension direction of the fuse 14 is: along the direction from the first end 141 of the fuse 14 to the second end 143 of the fuse 14, or along the direction from the second end 143 of the fuse 14 to the first end 141 of the fuse 14. The extension direction of the relay 13 is: the direction from the first end 135 of the relay 13 to the second end 137 of the relay 13, or the direction from the second end 137 of the relay 13 to the first end 135 of the relay 13. Among them, limited by the structural form of the fuse 14, the first connector 16 can only be electrically connected to the first end 141 of the fuse 14 or the second end 143 of the fuse 14. In the case where the extension direction of the fuse 14 is different from the extension direction of the relay 13, if the relay 13 and the fuse 14 are to be electrically connected, the shape of the first electrical connector 15 between the relay 13 and the fuse 14 needs to be set to a bent shape or other irregular shape, so that the module size formed by the integration of the relay 13 and the fuse 14 is larger, that is, the size of the integrated module 10 is larger, which is not conducive to the miniaturization of the battery pack 1000. In the embodiment of the present application, the first end 141 of the fuse 14 is electrically connected to the relay 13, the extension direction of the fuse 14 is consistent with the extension direction of the relay 13, and along the extension direction of the fuse 14, the first end 141 of the fuse 14 is substantially flush with the first end 135 of the relay 13, thus, the shape of the first electrical connector 15 between the relay 13 and the fuse 14 can be a plate-like structure, thereby being able to reduce the size of the integrated module 10, which is beneficial to the miniaturization of the battery pack 1000 ( Figure 1 miniaturization as shown).

[0067] In some embodiments, the integrated module 10 may further include a second electrical connector 18, one end of which is electrically connected to the second end 143 of the fuse 14, and the other end of the second electrical connector 18 is electrically connected to the second connector 17, so that an electrical connection can be formed between the first connector 16 and the second connector 17, so that the integrated module 10 can be electrically connected to other electrical components through the first connector 16 and the second connector 17 to jointly form a charge and discharge circuit 300 of the battery pack 200. It should be noted that in some embodiments, the second electrical connector 18 includes but is not limited to a copper bus, a wiring harness or an electrical connection sheet, that is, a copper bus, a wiring harness or an electrical connection sheet can be used to electrically connect the second connector 17 and the second end 143 of the fuse 14. In the embodiments of the present application, only the second electrical connector 18 is a copper bus as an example for description.

[0068] In addition, in order to ensure that the first connector 16 and the second connector 17 are both installed on the same side wall (e.g., the first side wall 111) of the housing 11, the second electrical connector 18 needs to extend from the second end 143 of the fuse 14 to the position where the first end 141 of the fuse 14 is located. Therefore, in some embodiments, the second electrical connector 18 may include a connecting portion 181, an extending portion 183, and a bending portion 185 that are bent and connected. The connecting portion 181 is electrically connected to the second end 143 of the fuse 14. The extending portion 183 extends from the connecting portion 181 toward the direction of the first side wall 111 and is spaced from the relay 13. The bending portion 185 extends from the extending portion 183 toward one end of the first side wall 111 in a direction away from the relay 13 and is electrically connected to the second connector 17.

[0069] Specifically, in some embodiments, the connection portion 181 and the second end 143 of the fuse 14 can be connected and fixed by welding, without the need for fasteners (such as bolts, etc.), thereby reducing the size of the integrated module 10. The extension portion 183 is bent and extended from the end of the connection portion 181 away from the relay 13 toward the first side wall 111, and the bent portion 185 is bent and extended from the end of the extension portion 183 away from the connection portion 181 toward the side of the peripheral wall 115 away from the relay 13, thereby avoiding interference between the second electrical connector 18 and the fuse 14 or the relay 13, and ensuring the normal installation of the second connector 17.

[0070] Further, please refer again to Figure 3 and Figure 4 In some embodiments, the shell 11 may include a supporting portion 117 located in the receiving cavity 110, and the supporting portion 117 extends from the second side wall 113 toward the first side wall 111 and is opposite to the bending portion 185. The bending portion 185 is supported by the supporting portion 117. Therefore, the supporting portion 117 can provide support for the bending portion 185 to prevent the bending portion 185 from deforming and causing the second connector 17 to enter the receiving cavity 110 and be unable to be electrically connected to other electrical components, thereby improving the stability of the electrical connection between the integrated module 10 and other electrical components.

[0071] Among them, see Figure 1 and Figure 2 During the operation of the battery pack 1000, the current flow can be referred to as follows:

[0072] The battery pack 1000 is in the pre-power-on process: when the battery management controller 40 receives the pre-power-on information, the battery management controller 40 controls the low-voltage power supply to transmit the electric energy to the pre-charge module 20 (including the pre-charge relay 21 and the pre-charge resistor 23) so that the pre-charge module 20 starts to work. Specifically, first, the current generated by the battery pack 200 can flow out to the load after passing through the pre-charge relay 21, the pre-charge resistor 23 and the fuse 14 in the integrated module 10 (including the main positive relay 131 and the fuse 14), and then the current can flow back to the battery pack 200 through the monitoring module 30 and the integrated module 10 (including the main negative relay 133 and the fuse 14);

[0073] The battery pack 1000 is in the pre-power-on and power-off process: when the battery management controller 40 receives the pre-power-on completion information, the battery management controller 40 controls the low-voltage power supply to transmit electric energy to the main positive relay 131 in the integrated module 10 (including the main positive relay 131 and the fuse 14), so that the main positive relay 131 starts to work, and controls the low-voltage power supply to stop supplying power to the pre-charging module 20, so that the pre-charging module 20 stops working;

[0074] The battery pack 1000 is in the discharge process: the current generated by the battery pack 200 enters the integrated module 10 (including the main positive relay 131 and the fuse 14) through the first connector 15, and flows out to the load after passing through the main positive relay 131, the first electrical connector 15, the fuse 14, the second electrical connector 18 and the second connector 17, and then the current can flow back to the battery pack 200 through the monitoring module 30 and the integrated module 10 (including the main negative relay 133 and the fuse 14);

[0075] The battery pack 1000 is in the charging process: the current can enter the integrated module 10 (including the main positive relay 131 and the fuse 14) through the second connector 17, and flow out to the battery pack 200 after passing through the second electrical connector 18, the fuse 14, the first electrical connector 15, the main positive relay 131 and the first connector 15, and then the current can flow out through the integrated module 10 (including the main negative relay 133 and the fuse 14) and the monitoring module 30.

[0076] See also Figure 1 , Figure 3 and Figure 4 In some embodiments, the integrated module 10 may further include a low-voltage connector 19, which is electrically connected to the relay 13 and passes through the housing 11. Specifically, in some embodiments, the electrical device 2000 may further include a low-voltage power supply (not shown). The low-voltage connector 19 can be electrically connected to the low-voltage power supply so that the electric energy of the low-voltage power supply can be transmitted to the relay 13, thereby ensuring the stable operation of the relay 13.

[0077] Since the relay 13 and the fuse 14 are both contained in the housing 11 to form the integrated module 10, the distance between the relay 13 and the fuse 14 is relatively close to achieve the miniaturization of the integrated module 10. Therefore, when the integrated module 10 is working normally, the heat generated by the relay 13 and the fuse 14 will affect each other, resulting in excessive heat in the local area of ​​the integrated module 10 and causing damage, such as causing the temperature of the fuse 14 to be too high and causing damage, thus affecting the service life of the electrical components. Figure 3 and Figure 4 In the embodiment of the present application, the housing 11 is provided with a plurality of through holes 118, which penetrate the peripheral wall 115 of the housing 11 and correspond to the fuse 14, so that the heat generated by the fuse 14 and the relay 13 can be dissipated to the outside of the housing 11 through the through holes 118, thereby preventing the heat inside the housing 11 from continuously increasing and causing damage to the relay 13 or the fuse 14, thereby extending the service life of the relay 13 and the fuse 14. In addition, the setting of the housing 11 can also prevent the heat generated by other electrical components (such as the pre-charged module 20, etc.) from affecting the relay 13 and the fuse 14 in the integrated module 10, thereby ensuring the normal operation of the integrated module 10.

[0078] It should be noted that, in some embodiments, the cross-sectional shape of the through hole 118 may be a regular shape or an irregular shape such as a circle, a square, a racetrack shape, and an ellipse, which is not limited here. The number of through holes 118 includes a plurality, and a plurality of through holes 118 are arranged at intervals in the housing 11. In the present application, the through hole 118 may pass through the peripheral wall 115 and be opposite to the fuse 14. In other embodiments, the through hole 118 may pass through at least one of the first side wall 111, the second side wall 113, and the peripheral wall 115 and be opposite to the fuse 14; or the through hole 118 may pass through at least one of the first side wall 111, the second side wall 113, and the peripheral wall 115 and be opposite to the relay 13; or the through hole 118 may pass through at least one of the first side wall 111, the second side wall 113, and the peripheral wall 115 and be opposite to both the relay 13 and the fuse 14.

[0079] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. At the same time, other implementation methods can be derived from the above-mentioned embodiments, so that structural and logical replacements and changes can be made without departing from the scope of this disclosure.

[0080] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An integrated module, applied to a power distribution device, characterized in that: include: A housing, wherein the housing is provided with a receiving cavity; A relay, the relay being arranged in the receiving cavity, the relay being used to be connected to the battery management controller of the power distribution device, the relay being electrically connected to a first connector, and the first connector being arranged through the housing; and A fuse, wherein the fuse is arranged in the accommodating cavity, the fuse is used to connect to the battery management controller, the fuse is electrically connected to a second connector, the second connector passes through the shell, the fuse is electrically connected to the relay through a first electrical connector, the relay includes a first end and a second end opposite to each other, the first electrical connector and the first connector are both electrically connected to the first end of the relay.

2. The integrated module according to claim 1, characterized in that: A distance between a side of the first electrical connector facing away from the first end of the relay and the first end of the relay is smaller than a distance between a side of the first connector facing away from the first end of the relay and the first end of the relay.

3. The integrated module according to claim 1, characterized in that: The shell comprises a first side wall and a second side wall opposite to each other, and a peripheral wall located between the first side wall and the second side wall, wherein the first side wall, the second side wall and the peripheral wall together form a receiving cavity; The fuse includes a first end and a second end opposite to each other, the first end of the fuse is electrically connected to the relay through the first electrical connector, the second end of the fuse is electrically connected to the second connector, the extension direction of the fuse is the same as the extension direction of the relay, and the first connector and the second connector are both disposed through the first side wall.

4. The integrated module according to claim 3, characterized in that: The integrated module also includes: A second electrical connector, one end of which is electrically connected to the second end of the fuse, and the other end of which is electrically connected to the second connector.

5. The integrated module according to claim 4, characterized in that: The second electrical connector includes a connecting portion, an extending portion and a bending portion that are bent and connected to each other, the connecting portion is electrically connected to the second end of the fuse, the extending portion extends from the connecting portion toward the first side wall and is spaced from the relay, and the bending portion extends from the extending portion toward one end of the first side wall in a direction away from the relay and is electrically connected to the second connector.

6. The integrated module according to claim 5, characterized in that: The shell includes a supporting portion, the supporting portion extends from the second side wall toward the first side wall and is opposite to the bent portion, and the bent portion is supported by the supporting portion.

7. The integrated module according to claim 1, characterized in that: The integrated module also includes: A low voltage connector is electrically connected to the relay and passes through the housing.

8. The integrated module according to claim 1, characterized in that: The housing is provided with a plurality of through holes, which penetrate through the peripheral wall of the housing and correspond to the fuses.

9. The integrated module according to claim 1, characterized in that: The shell further includes a mounting portion, which extends from an outer peripheral wall of the shell toward a direction away from the shell, and the mounting portion is used for the shell to be mounted on a battery pack.

10. A power distribution device for a battery pack, characterized in that: include: The integrated module according to any one of claims 1 to 9; and A pre-charging module is electrically connected to the integrated module and is used to jointly control the operation of the battery pack.

11. The power distribution device according to claim 10, characterized in that: The power distribution device also includes: A monitoring module, the monitoring module is used to collect the voltage and current of the battery pack; and A battery management controller, wherein the battery management controller is electrically connected to the monitoring module, the integrated module and the pre-charging module, and is used to obtain the voltage and current of the battery pack collected by the monitoring module, and control the operation of the battery pack according to the voltage and current of the battery pack.

12. A battery pack, characterized in that: include: Battery pack; and The power distribution device according to claim 10 or 11, wherein the power distribution device is electrically connected to the battery pack, and the power distribution device is used to control the charging and discharging of the battery pack.

13. An electrical equipment, characterized in that: include: The battery pack according to claim 12.

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