Pre-charging assembly, main positive module, power distribution device, battery and electric equipment

Abstract

The utility model belongs to the technical field of power distribution, and particularly relates to a pre-charging assembly, a main positive module, a power distribution device, a battery and electric equipment, the pre-charging assembly comprises a pre-charging relay, a pre-charging resistor and a circuit board, the circuit board comprises a substrate and a conductive circuit, and the conductive circuit is installed on the substrate; the pre-charging relay and the pre-charging resistor are mounted on the substrate, and the pre-charging relay and the pre-charging resistor are electrically connected through a conductive circuit; the circuit board is used for replacing a wire harness, wiring, fixing, wear-resisting and other spaces needed by the wire harness can be omitted, the occupied space of the circuit board is small, the occupied space of the pre-charging assembly can be reduced, and miniaturization design of the power distribution device is facilitated.

Description

Technical Field

[0001] The present application belongs to the field of power distribution technology, and in particular relates to a pre-charge component, a main positive module, a power distribution device, a battery and electrical equipment. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] Electric vehicles are usually provided with a distribution device for controlling the distribution of electric energy, and the distribution device is usually provided with a pre-charge component for protecting the main positive relay; however, the pre-charge component occupies a large space in the distribution device, which is not conducive to the miniaturization design of the distribution device.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a pre-charge component, a main positive module, a power distribution device, a battery and an electrical equipment, including but not limited to solving the problem of space occupied by the pre-charge component in the power distribution device in the related art.

[0006] The technical solution adopted in the embodiment of the present application is:

[0007] In the first aspect, a pre-charging component is provided, which includes a pre-charging relay, a pre-charging resistor and a circuit board. The circuit board includes a substrate and a conductive circuit, and the conductive circuit is installed on the substrate; the pre-charging relay and the pre-charging resistor are installed on the substrate, and the pre-charging relay and the pre-charging resistor are electrically connected through the conductive circuit.

[0008] The pre-charging component of the embodiment of the present application, the pre-charging relay and the pre-charging resistor are installed on the substrate of the circuit board, and the pre-charging relay and the pre-charging resistor are electrically connected through the conductive circuit of the circuit board. That is, the circuit board is used to replace the wiring harness, which can save the space required for routing, fixing and anti-wear of the wiring harness, and the circuit board occupies a small space, which is conducive to reducing the space occupied by the pre-charging component and is conducive to the miniaturized design of the power distribution device.

[0009] In some embodiments, the substrate is provided with a first connecting hole and a second connecting hole, the pre-charging relay includes a first body and a first connecting terminal provided on the first body, the first connecting terminal passes through the first connecting hole and is electrically connected to the conductive circuit; the pre-charging resistor includes a second body and a second connecting terminal provided on the second body, the second connecting terminal passes through the second connecting hole and is electrically connected to the conductive circuit.

[0010] By adopting the technical solution of this embodiment, the first connecting terminal of the pre-charging relay is fixed in the first connecting hole, and the fixed connection and electrical connection between the pre-charging relay and the circuit board are simple and convenient to operate; similarly, the second connecting terminal of the pre-charging resistor is fixed in the second connecting hole, and the fixed connection and electrical connection between the pre-charging relay and the circuit board are simple and convenient to operate.

[0011] In some embodiments, the shape of the first connection hole is different from the shape of the second connection hole; and / or, the size of the first connection hole is different from the size of the second connection hole; and / or, the arrangement of the first connection hole is different from the arrangement of the second connection hole.

[0012] By adopting the technical solution of this embodiment, there is a difference between the first connecting hole and the second connecting hole, which can reduce the risk of confusing the first connecting hole and the second connecting hole, improve the accuracy of installation of the pre-charging relay and the pre-charging resistor, and achieve a better fool-proofing effect.

[0013] In some embodiments, the first connection terminal and the second connection terminal are welded to the substrate.

[0014] By adopting the technical solution of this embodiment, the first connecting terminal and the second connecting terminal are fixed to the substrate by welding, so that the connection reliability is good and the risk of loosening is small, which is beneficial to improving the reliability of the use of the pre-filled component; in addition, the use of welding method can easily realize automated welding, which is beneficial to improving assembly efficiency.

[0015] In some embodiments, the substrate has a first pad and a second pad electrically connected to the conductive circuit, the first pad is welded to the first connection terminal, and the second pad is welded to the second connection terminal.

[0016] By adopting the technical solution of this embodiment, the first soldering pad is welded to the first connecting terminal, which can simultaneously realize the fixation of the pre-charging relay and the electrical connection between the pre-charging relay and the conductive circuit; similarly, the second soldering pad is welded to the second connecting terminal, which can simultaneously realize the fixation of the pre-charging resistor and the electrical connection between the pre-charging resistor and the conductive circuit. The assembly operation of the pre-charging resistor, the pre-charging relay and the circuit board is simple and quick, which is conducive to realizing the automation of assembly.

[0017] In some embodiments, the substrate has a first side and a second side that are opposite to each other, the first body and the second body are located on the first side, and the first pad and the second pad are located on the second side.

[0018] By adopting the technical solution of this embodiment, the pre-charging relay and the pre-charging resistor can be welded from the same side of the substrate (i.e., the second side), which makes the welding operation simpler and more conducive to automated welding, thereby improving assembly efficiency.

[0019] In some embodiments, the pre-charging component also includes a high-voltage sampling component, which is installed on the substrate and electrically connected to the conductive circuit to collect the voltage difference of the pre-charging relay; the pre-charging component also includes a first connector, which is installed on the substrate and electrically connected to the conductive circuit to control the on and off of the pre-charging relay.

[0020] By adopting the technical solution of this embodiment, the arrangement of the high-voltage sampling component and the first connector can facilitate the electrical connection between the pre-charge component and the outside.

[0021] In some embodiments, the high voltage sampling component and the first connector are integrated to form a first integrated connector.

[0022] By adopting the technical solution of this embodiment, using the first integrated connector can facilitate the connection between the pre-charged component and the external circuit, which is conducive to using a unified connector for external connection, and the distribution device is easy to assemble and has high assembly efficiency.

[0023] In some embodiments, the substrate is provided with a third connecting hole and a fourth connecting hole, the high-voltage sampling component includes a third main body and a third connecting terminal provided on the third main body, the third connecting terminal is passed through the third connecting hole and is electrically connected to the conductive circuit; the first plug-in component includes a fourth main body and a fourth connecting terminal provided on the fourth main body, the fourth connecting terminal is passed through the fourth connecting hole and is electrically connected to the conductive circuit.

[0024] By adopting the technical solution of this embodiment, the third connecting terminal of the high-voltage sampling component is inserted into the third connecting hole, and the fixed connection and electrical connection between the high-voltage sampling component and the circuit board are simple and convenient. Similarly, the fourth connecting terminal of the first connector is inserted into the fourth connecting hole, and the fixed connection and electrical connection between the first connector and the circuit board are simple and convenient.

[0025] In some embodiments, the shape of the third connection hole is different from the shape of the fourth connection hole; and / or, the size of the third connection hole is different from the size of the fourth connection hole; and / or, the arrangement of the third connection hole is different from the arrangement of the fourth connection hole.

[0026] By adopting the technical solution of this embodiment, there is a difference between the third connecting hole and the fourth connecting hole, which can reduce the risk of confusing the third connecting hole and the fourth connecting hole, improve the accuracy of installation of the high-voltage sampling component and the first connector, and achieve a better fool-proofing effect.

[0027] In some embodiments, the third connection terminal and the fourth connection terminal are welded to the substrate.

[0028] By adopting the technical solution of this embodiment, the third connecting terminal and the fourth connecting terminal are fixed to the substrate by welding, so that the connection reliability is good and the risk of loosening is small, which is beneficial to improving the reliability of the use of the pre-filled component; in addition, the use of welding method can easily realize automated welding, which is beneficial to improving assembly efficiency.

[0029] In some embodiments, the substrate has a third pad and a fourth pad electrically connected to the conductive circuit, the third pad is welded to the third connection terminal, and the fourth connection terminal is welded to the fourth pad.

[0030] By adopting the technical solution of this embodiment, the third soldering pad is welded to the third connecting terminal, which can simultaneously realize the fixation of the high-voltage sampling component and the electrical connection between the high-voltage sampling component and the conductive circuit; similarly, the fourth soldering pad is welded to the fourth connecting terminal, which can simultaneously realize the fixation of the first connector and the electrical connection between the first connector and the conductive circuit. The assembly operation of the first connector, the high-voltage sampling component and the circuit board is simple and quick, which is conducive to the realization of automated assembly.

[0031] In some embodiments, the substrate has a first side and a second side that are opposite to each other; the third body and the fourth body are located on the first side, and the third pad and the fourth pad are located on the second side.

[0032] By adopting the technical solution of this embodiment, the high-voltage sampling component and the first connector can be welded from the same side of the substrate (i.e., the second side), which makes the welding operation simpler and more conducive to automated welding, thereby improving assembly efficiency.

[0033] In some embodiments, the pre-charge component further includes a first relay and a fuse, the first relay and the fuse are mounted on the substrate, and the first relay and the fuse are both electrically connected to the conductive line.

[0034] Through the technical solution of this embodiment, the first relay and the fuse are electrically connected to the conductive circuit in the circuit board. On the one hand, the use of wiring harnesses can be reduced and the space occupied by the pre-charged components can be reduced. On the other hand, the connection of the pre-charged components can also integrate the first relay and the fuse in other circuits, so that the pre-charged components are more diverse in functionality and more practical. It can also improve the integration of the circuit and reduce the difficulty of circuit layout of batteries and electrical equipment.

[0035] In some embodiments, the first relay includes a heating relay; and / or the fuse includes at least one of a heating fuse and a DC-to-DC fuse.

[0036] By adopting the technical solution of this embodiment, the first relay and the fuse can be flexibly arranged on the circuit board to meet different usage requirements.

[0037] In some embodiments, the substrate is provided with a fifth connection hole and a sixth connection hole, the first relay includes a fifth body and a fifth connection terminal provided on the fifth body, the fifth connection terminal passes through the fifth connection hole and is electrically connected to the conductive circuit, the fuse includes a sixth body and a sixth connection terminal provided on the sixth body, the sixth connection terminal passes through the sixth connection hole and is electrically connected to the conductive circuit.

[0038] By adopting the technical solution of this embodiment, the fifth connecting terminal of the first relay is fixed in the fifth connecting hole, and the fixed connection and electrical connection between the first relay and the circuit board are simple and convenient. Similarly, by adopting the fixing method of the sixth connecting terminal of the fuse is fixed in the sixth connecting hole, the fixed connection and electrical connection between the first relay and the circuit board are simple and convenient.

[0039] In some embodiments, the shape of the fifth connection hole is different from the shape of the sixth connection hole; and / or, the size of the fifth connection hole is different from the size of the sixth connection hole; and / or, the arrangement of the fifth connection hole is different from the arrangement of the sixth connection hole.

[0040] By adopting the technical solution of this embodiment, there is a difference between the fifth connection hole and the sixth connection hole, which can reduce the risk of confusing the fifth connection hole with the sixth connection hole, improve the accuracy of installation of the first relay and the fuse, and achieve a better fool-proofing effect.

[0041] In some embodiments, the fifth connection terminal and the sixth connection terminal are welded to the substrate.

[0042] By adopting the technical solution of this embodiment, the fifth connecting terminal and the sixth connecting terminal are fixed to the substrate by welding, and the connection reliability is good and the risk of loosening is small, which is beneficial to improving the reliability of the use of the pre-filled component; in addition, the use of welding method can easily realize automated welding, which is beneficial to improving assembly efficiency.

[0043] In some embodiments, the substrate has a fifth pad and a sixth pad electrically connected to the conductive circuit, the fifth pad is welded to the fifth connection terminal, and the sixth connection terminal is welded to the sixth pad.

[0044] By adopting the technical solution of this embodiment, the fifth soldering pad is welded to the fifth connecting terminal, so as to simultaneously realize the fixation of the first relay and the electrical connection between the first relay and the conductive circuit; similarly, the sixth soldering pad is welded to the sixth connecting terminal, so as to simultaneously realize the fixation of the fuse and the electrical connection between the fuse and the conductive circuit. The assembly operation of the fuse, the first relay and the circuit board is simple and quick, which is conducive to realizing the automation of assembly.

[0045] In some embodiments, the substrate has a first side and a second side that are opposite to each other; the fifth body and the sixth body are located on the first side, and the fifth pad and the sixth pad are located on the second side.

[0046] By adopting the technical solution of this embodiment, the first relay and the fuse can be welded from the same side (ie, the second side) of the substrate, which makes the welding operation simpler and more conducive to automatic welding, thereby improving assembly efficiency.

[0047] In some embodiments, in the width direction of the pre-charging resistor, the pre-charging relay and the first relay are located on the same side of the pre-charging resistor; the pre-charging relay and the first relay are arranged along the length direction of the pre-charging resistor; and / or, the fuse is located on the side of the pre-charging resistor along the width direction.

[0048] By adopting the technical solution of this embodiment, the side space in the width direction of the pre-charging resistor can be utilized to reduce the size of the circuit board in the length direction of the pre-charging resistor, making the size of the circuit board more square and the pre-charging component as a whole more square, which facilitates the installation of the pre-charging component in the power distribution device.

[0049] In some embodiments, at least one fuse is located between the pre-charging resistor and the pre-charging relay, or, at least one fuse is located between the pre-charging resistor and the first relay; or, at least one fuse is located on the side of the pre-charging relay facing away from the pre-charging resistor; or, at least one fuse is located on the side of the first relay facing away from the pre-charging resistor; or, the fuse is located on the side of the pre-charging resistor facing away from the pre-charging relay.

[0050] By adopting the technical solution of this embodiment, the fuse can be flexibly arranged on the side of the pre-charging resistor along the width direction to meet different needs.

[0051] In some embodiments, there are multiple fuses, and the multiple fuses are arranged along the length direction of the pre-charging resistor.

[0052] By adopting the technical solution of this embodiment, multiple fuses are arranged along the length direction of the pre-charge resistor, which can make full use of the space in the width direction of the circuit board, which is beneficial to improving the structural compactness of the pre-charge component and reducing the size of the pre-charge component. The pre-charge component can be installed in the power distribution device more conveniently and simply.

[0053] In some embodiments, the pre-filled component further includes a second connector, which is mounted on the substrate and electrically connected to the conductive circuit to control the on and off of the first relay.

[0054] By adopting the technical solution of this embodiment, the provision of the second connector can facilitate the electrical connection between the pre-charged component and the outside.

[0055] In some embodiments, the pre-charging component also includes a high-voltage sampling component, which is installed on the substrate and electrically connected to the conductive circuit to collect the voltage difference of the pre-charging relay; the pre-charging component also includes a first connector, which is installed on the substrate and electrically connected to the conductive circuit to control the on and off of the pre-charging relay; at least two of the high-voltage sampling component, the first connector and the second connector are integrated to form a second integrated connector.

[0056] By adopting the technical solution of this embodiment and using a second integrated connector, the pre-charged component can be easily connected to the external circuit, which is conducive to using a unified connector for external connection, and the distribution device can be easily assembled with high assembly efficiency.

[0057] In some embodiments, when the first connector and the second connector are integrated to form a second integrated connector, the high voltage sampling component and the second integrated connector are respectively located on opposite sides of the pre-charging resistor along the length direction.

[0058] By adopting the technical solution of this embodiment, the high-voltage sampling component and the second integrated connector are separately arranged, which can achieve high and low voltage separation and improve the reliability of the pre-charged component. In addition, the second integrated connector and the high-voltage sampling component are respectively pre-charged on opposite sides of the resistor along the length direction, which is conducive to improving the compactness of the structure.

[0059] In some embodiments, when the first connector and the second connector are integrated to form a second integrated connector, the substrate is provided with a seventh connecting hole, the second connector includes a seventh body and a seventh connecting terminal provided on the seventh body, and the seventh connecting terminal passes through the seventh connecting hole and is electrically connected to the conductive circuit.

[0060] By adopting the technical solution of this embodiment, the seventh connection terminal of the second integrated connector is inserted into the seventh connection hole, and the fixed connection and electrical connection between the second integrated connector and the circuit board are simple and convenient.

[0061] In some embodiments, the seventh connection terminal is welded to the substrate.

[0062] By adopting the technical solution of this embodiment, the seventh connecting terminal is fixed to the substrate by welding, which has good connection reliability and low risk of loosening, and is beneficial to improving the reliability of the use of the pre-filled component; in addition, the use of welding makes it easy to realize automated welding, which is beneficial to improving assembly efficiency.

[0063] In some embodiments, the substrate has a seventh pad electrically connected to the conductive circuit, and the seventh pad is welded to the seventh connection terminal.

[0064] By adopting the technical solution of this embodiment, the seventh soldering pad is welded to the seventh connecting terminal, which can simultaneously realize the fixation of the second integrated connector and the electrical connection between the second integrated connector and the conductive circuit. The assembly operation of the second integrated connector and the circuit board is simple and fast, which is conducive to realizing the automation of assembly.

[0065] In some embodiments, the substrate has a first side and a second side that are opposite to each other; the seventh body is located on the first side, and the seventh pad is located on the second side.

[0066] By adopting the technical solution of this embodiment, the seventh connection terminal of the second integrated connector can be welded from the same side of the substrate (ie, the second side), which makes the welding operation simpler and more conducive to automated welding, thereby improving assembly efficiency.

[0067] In a second aspect, a main positive module is provided, including a main positive relay and a pre-charge component as described in the above embodiment, the pre-charge relay and the pre-charge resistor are both connected in parallel with the main positive relay, and the pre-charge relay and the pre-charge resistor are connected in series.

[0068] In a third aspect, a power distribution device is provided, comprising a main positive module as described in the above embodiment.

[0069] In a fourth aspect, a battery is provided, comprising a power distribution device as described in the above embodiment.

[0070] In a fifth aspect, an electrical equipment is provided, comprising a power distribution device as described in the above embodiment; and / or comprising a battery as described in the above embodiment.

[0071] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0073] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0074] Figure 2 A schematic diagram of an exploded view of a battery provided for some embodiments of the present application.

[0075] Figure 3Schematic diagram of the structure of batteries provided in other embodiments of the present application.

[0076] Figure 4 A circuit connection schematic diagram of a power distribution device provided in some embodiments of the present application.

[0077] Figure 5 A schematic structural diagram of a pre-filled component from one perspective provided in some embodiments of the present application.

[0078] Figure 6 for Figure 5 A schematic structural diagram of the pre-charged component from another perspective is shown.

[0079] Figure 7 For along Figure 6 Sectional view along line AA.

[0080] Figure 8 for Figure 7 A partial enlarged view of point B in the middle.

[0081] Fig. 9 for Figure 5 An exploded schematic diagram of one perspective of the pre-charge assembly is shown.

[0082] Fig.10 for Figure 5 An exploded schematic diagram of another perspective of the pre-charge assembly is shown.

[0083] Among them, the reference numerals in the figure are:

[0084] 1000, vehicle; 1100, battery; 1200, controller; 1300, motor; 100, power distribution device; 10, pre-charging component; 11, pre-charging relay; 111, first body; 112, first connecting terminal; 12, pre-charging resistor; 121, second body; 122, second connecting terminal; 13, circuit board; 131, substrate; 13101, first connecting hole; 13102, second connecting hole; 13103, first solder pad; 13104, second solder pad; 13105, third connecting hole; 13106, fourth connecting hole; 13107, third solder pad; 13108, fourth solder pad; 13109, fifth connecting hole; 13110, sixth connecting hole; 13111, fifth solder pad; 13112, sixth solder pad; 13113, seventh connecting hole; 13114, seventh solder pad; 132, Conductive circuit; 14, high-voltage sampling component; 141, third main body; 142, third connecting terminal; 15, first plug-in connector; 151, fourth main body; 152, fourth connecting terminal; 16, first relay; 16a, heating relay; 161, fifth main body; 162, fifth connecting terminal; 17, fuse; 17a, heating fuse; 17b, DC-to-DC fuse; 171, sixth main body; 172, sixth connecting terminal; 18, second integrated plug-in connector; 181, seventh main body; 182, seventh connecting terminal; 191, first connecting component; 192, second connecting component; 20, main positive module; 21, main positive relay; 30, main negative module; 31, main negative relay; 200, housing; 210, first part; 220, second part; 300, battery unit; 310, battery cell; 400, load. DETAILED DESCRIPTION

[0085] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0086] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0087] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0088] Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least some embodiments of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments in any suitable manner.

[0089] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0090] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces). "Several" means one or more than one, unless otherwise clearly and specifically defined.

[0091] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of 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 embodiments of the present application.

[0092] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "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, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0093] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0094] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, lithium metal batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0095] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. Among them, one or more battery cells constitute a battery unit. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0096] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode tab.

[0097] Taking lithium-ion batteries as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, lithium metal or lithium alloy, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the isolation film may be polypropylene (PP) or polyethylene (PE), etc. In addition, the electrode assembly in the embodiment of the present application includes but is not limited to a winding structure or a laminated structure.

[0098] In some cases, the power distribution device is a device for controlling the charging and discharging of battery cells; the power distribution device includes a main positive module, a main negative module and a pre-charging component, the main positive module includes a main positive relay, the pre-charging component includes a pre-charging resistor and a pre-charging relay, the main negative module includes a main negative relay, the main positive relay is electrically connected between the positive electrode of the battery cell and the positive electrode of the load, the pre-charging relay is connected in parallel with the main positive relay, and the pre-charging resistor is connected in series with the pre-charging relay; the main negative relay is electrically connected between the negative electrode of the battery cell and the negative electrode of the load; wherein the load generally includes a capacitor, that is, the load is a capacitive load; the load may refer to a motor controller, a motor, an air-conditioning compressor, a heater, etc.: However, when the battery cell energizes the capacitive load, if the main positive relay is directly connected to the capacitive negative When the load is turned on, the voltage of the battery cell is high, while the voltage of the capacitor is close to 0V. At this time, it is equivalent to an instantaneous short circuit, the instantaneous current in the circuit is large, and the main positive relay is easily damaged. The main positive module is provided with a pre-charging resistor and a pre-charging relay, which form a pre-charging circuit. When in use, the main positive relay can be disconnected first, and the pre-charging relay can be turned on, so that the pre-charging resistor and the pre-charging relay are connected in series between the battery cell and the resistive capacitive load. Since the pre-charging resistor has a certain resistance value, the current in the circuit can be reduced. The pre-charging resistor plays a role of current limiting and reduces the risk of damage to the main positive relay. After the voltage of the capacitor in the capacitive load reaches the preset value, the pre-charging relay is disconnected and the main positive relay is turned on to realize the discharge of the battery cell.

[0099] In actual power distribution devices, electrical components in pre-charging components (such as pre-charging resistors and pre-charging relays) are usually connected electrically by wiring harnesses. However, the connection terminals of the wiring harnesses are high, and space for routing, fixing and anti-wear is required in the power distribution device, resulting in a large space occupied by the pre-charging components.

[0100] Based on this, the pre-charging component, the pre-charging relay and the pre-charging resistor of the embodiment of the present application are installed on the substrate of the circuit board. The pre-charging relay and the pre-charging resistor are electrically connected through the conductive circuit in the circuit board. The circuit board is used instead of the wiring harness, which can reduce the space occupied by the pre-charging component and is conducive to the miniaturized design of the power distribution device.

[0101] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical equipment using batteries.

[0102] The electric devices in the embodiments of the present application may be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0103] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0104] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1100 is provided inside the vehicle 1000, and the battery 1100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 1100 may be used to power the vehicle 1000, for example, the battery 1100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300, and the controller 1200 is used to control the battery 1100 to power the motor 1300, for example, for the starting, navigation and working power requirements of the vehicle 1000 during driving. The battery 1100 may also be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0105] In some embodiments of the present application, the battery 1100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0106] Please refer to Figure 2 , Figure 2 The schematic diagram of the structure of the battery 1100 provided in some embodiments of the present application. The battery 1100 includes a box body 200 and a battery cell 300, and the battery cell 300 is accommodated in the box body 200. The box body 200 is used to provide a storage space for the battery cell 300, and the box body 200 can adopt a variety of structures.

[0107] In some embodiments, the box 200 may include a first portion 210 and a second portion 220, the first portion 210 and the second portion 220 cover each other, and the first portion 210 and the second portion 220 jointly define a storage space for accommodating the battery unit 300. The second portion 220 may be a hollow structure with one end open, and the first portion 210 may be a plate-like structure, and the first portion 210 covers the open side of the second portion 220, so that the first portion 210 and the second portion 220 jointly define a storage space; the first portion 210 and the second portion 220 may also be hollow structures with one side open, and the open side of the first portion 210 covers the open side of the second portion 220. Of course, the box 200 formed by the first portion 210 and the second portion 220 may be in various shapes, such as a cylinder, a cuboid, etc.

[0108] In the battery 1100 , the battery unit 300 may include a plurality of battery cells 310 . The plurality of battery cells 310 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells 310 may be connected in series or in parallel.

[0109] In some embodiments, multiple battery cells 310 can be directly connected in series, parallel or hybrid, and then the whole formed by the multiple battery cells 310 is accommodated in the box 200; of course, the battery 1100 can also be a battery 1100 module in which multiple battery cells 310 are first connected in series, parallel or hybrid, and multiple battery 1100 modules are then connected in series, parallel or hybrid to form a whole and accommodated in the box 200. The battery 1100 may also include other structures, for example, the battery 1100 may also include a busbar component for realizing electrical connection between the multiple battery cells 310.

[0110] In some embodiments, the battery 1100 may not include the housing 200 , but instead a plurality of battery cells 310 are electrically connected and formed into a whole through necessary fixing structures and then assembled into an electrical device.

[0111] Please refer to Figure 3 , Figure 3 The schematic diagram of the structure of the battery 1100 provided in some other embodiments of the present application. The battery 1100 also includes a power distribution device 100, which can be installed in the box 200 or outside the box 200; the power distribution device 100 can be installed in the first part 210 or the second part 220.

[0112] In some embodiments, the power distribution device 100 may be a BDU, where BDU (Battery Disconnect Unit) refers to a circuit breaker unit of the battery 1100, which is an important component of the high-voltage power distribution system in the vehicle 1000. The BDU is mainly used to control the connection and disconnection between the battery unit 300 and the high-voltage system to ensure the safe operation of the battery 1100. The main functions of the BDU include controlling the charging, discharging, and pre-charging of the battery 1100, and protecting the battery 1100 from instantaneous high current shocks when the system is powered on.

[0113] In some embodiments, the power distribution device 100 can also be a PDU. PDU (Power Distribution Unit) refers to a power distribution unit, which is responsible for distributing the electrical energy of the high-voltage battery 1100 group to various high-voltage components in the vehicle 1000, such as motors, air conditioners, audio, etc. The PDU is electrically connected to the high-voltage components through the busbar and wiring harness, and provides charging and discharging control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, low-voltage control and other functions for the high-voltage system of the vehicle 1000, protecting and monitoring the operation of the high-voltage system. Among them, the "voltage" in "high voltage" and "low voltage" here refers to voltage, "high voltage" can refer to the case where the voltage is greater than or equal to 60V, and "low voltage" can refer to the case where the voltage is less than 60V.

[0114] For the convenience of description, the following embodiments are described by taking the power distribution device 100 as a BDU as an example.

[0115] See also Figure 4 , Figure 4 A circuit connection schematic diagram of a power distribution device 100 provided in some embodiments of the present application. The power distribution device 100 is used to control the charging and discharging of a battery unit 300; the power distribution device 100 includes a main positive module 20 and a main negative module 30, the main positive module 20 is electrically connected between the positive electrode of the battery unit 300 and the positive electrode of the load 400 to form a main positive circuit, the main negative module 30 is electrically connected between the negative electrode of the battery unit 300 and the negative electrode of the load 400, the main positive module 20 controls the on-off of the main positive circuit, and the main negative module 30 controls the on-off of the main negative circuit, thereby controlling the power supply of the battery unit 300 to the load 400. In addition, when the battery cell 300 is charged, the main positive module 20 is electrically connected between the positive pole of the battery cell 300 and the positive pole of the charging device, and the main negative module 30 is electrically connected between the negative pole of the battery cell 300 and the negative pole of the charging device. The charging of the battery cell 300 can also be achieved through the control of the main positive module 20 and the main negative module 30, thereby realizing the control of the charging and discharging of the battery cell 300.

[0116] In some embodiments, the main positive module 20 includes a main positive relay 21 and a pre-charging component 10, the pre-charging component 10 includes a pre-charging resistor 12 and a pre-charging relay 11, the main positive relay 21 is electrically connected between the positive pole of the battery cell 300 and the positive pole of the load 400, the pre-charging relay 11 and the pre-charging resistor 12 are connected in series to form a pre-charging circuit, and the pre-charging relay 11 and the pre-charging resistor 12 are both connected in parallel with the main positive relay 21; the main negative module 30 includes a main negative relay 31, and the main negative relay 31 is electrically connected between the negative pole of the battery cell 300 and the negative pole of the load 400, so that the charging and discharging of the battery cell 300 can be controlled by the on and off of the main positive relay 21 and the main negative relay 31; and by controlling the on and off of the pre-charging relay 11, the risk of instantaneous large current shock when the load 400 is powered on can be reduced.

[0117] Please also read Figures 5 to 10 As shown, Figure 5 A schematic structural diagram of a pre-filled component 10 provided in some embodiments of the present application from one perspective. Figure 6 for Figure 5 A schematic structural diagram of the pre-filled component 10 from another perspective is shown. Figure 7 For along Figure 6 Sectional view along line AA. Figure 8 for Figure 7 A partial enlarged view of point B in the middle. Fig. 9 for Figure 5 A schematic exploded view of the pre-filled assembly 10 is shown from one perspective. Fig.10 for Figure 5 A schematic exploded view of the pre-filled assembly 10 from another perspective is shown.

[0118] In some embodiments of the present application, see Figures 5 to 8 As shown, a pre-charging component 10 is provided, which includes a pre-charging relay 11, a pre-charging resistor 12 and a circuit board 13, the circuit board 13 includes a substrate 131 and a conductive circuit 132, and the conductive circuit 132 is installed on the substrate 131; the pre-charging relay 11 and the pre-charging resistor 12 are installed on the substrate 131, and the pre-charging relay 11 and the pre-charging resistor 12 are electrically connected through the conductive circuit 132.

[0119] The pre-charge relay 11 may refer to a relay used to protect the circuit from instantaneous large current impact; the pre-charge relay 11 is usually in a closed state before the vehicle 1000 is started, and it will be disconnected immediately when the vehicle 1000 is started, thereby avoiding excessive current at the moment of vehicle 1000 starting, protecting the circuit and battery 1100 system safety. At the same time, the pre-charge relay 11 can also cut off the current according to the command of the vehicle controller 1200 when the system reports an error, ensuring system safety.

[0120] The pre-charging resistor 12 may refer to a resistor that plays a current limiting role in the circuit. The pre-charging relay 11 and the pre-charging resistor 12 are connected in series between the positive electrode of the battery unit 300 and the positive electrode of the load 400 to reduce the instantaneous high current impact on the circuit.

[0121] The printed circuit board 13 (PCB) is a printed circuit board 13 used to fix and connect electronic components (such as resistors, capacitors, chips, relays, etc.). The printed circuit board 13 includes but is not limited to a flexible printed circuit board (FPC) and a rigid printed circuit board.

[0122] The circuit board 13 includes a substrate 131 and a conductive circuit 132; the substrate 131 may refer to the part of the circuit board 13 used to support the wire circuit and electronic components, and the substrate 131 is usually made of insulating material; the conductive circuit 132 may refer to a path formed on the substrate 131 for conducting current. These paths are usually made of conductive materials (for example: copper, aluminum, etc.), and the conductive circuit 132 is used to connect various electronic components. The conductive circuit 132 is arranged in the substrate 131, and can also be covered on the surface of the substrate 131. The conductive circuit 132 is formed by printing, etching and other processes, and is used to connect various electronic components, and can enable the electronic components to work according to a predetermined circuit composition. The distribution of the conductive circuit 132 can be set according to actual needs.

[0123] The pre-charging relay 11 and the pre-charging resistor 12 are installed on the substrate 131. It can be understood that the pre-charging relay 11 and the pre-charging resistor 12 are fixedly installed on the substrate 131. The pre-charging relay 11 and the pre-charging resistor 12 can be fixed on the substrate 131 by welding, clamping, screwing, etc., and the pre-charging relay 11 and the pre-charging resistor 12 are electrically connected to the conductive circuit 132, that is, the pre-charging relay 11 and the pre-charging resistor 12 are connected in series.

[0124] The pre-charging component 10 of the embodiment of the present application, the pre-charging relay 11 and the pre-charging resistor 12 are installed on a substrate 131 of a circuit board 13, and the pre-charging relay 11 and the pre-charging resistor 12 are electrically connected via a conductive line 132 of the circuit board 13, that is, the circuit board 13 is used to replace the wiring harness, which can save the space required for routing, fixing and anti-wear of the wiring harness, and the circuit board 13 occupies a small space, which is beneficial to reducing the space occupied by the pre-charging component 10 and is beneficial to the miniaturized design of the power distribution device 100.

[0125] In some embodiments, the pre-filling component 10 also includes a first connector 191 and a second connector 192. The first connector 191 is mounted on the circuit board 13 and electrically connected to the pre-filling relay 11 through the conductive line 132. The second connector 192 is mounted on the substrate 131 and electrically connected to the pre-filling resistor 12 through the conductive line 132. The first connector 191, the pre-filling relay 11, the pre-filling resistor 12 and the second connector 192 are connected in series; the first connector 191 is used to electrically connect to one end of the main positive relay 21, and the second connector 192 is used to electrically connect to the other end of the main positive relay 21, so that the main positive relay 21 and the pre-filling relay 11 are connected in parallel. The first connector 191 and the second connector 192 can be, but are not limited to, connectors and conductive sheets. Among them, the conductive sheet is made of conductive material (for example: copper, aluminum, etc.) to meet the conductivity requirements.

[0126] For example, the first connecting member 191 and the second connecting member 192 are conductive sheets, one end of which passes through the substrate 131 and is welded to the substrate 131 to fix the conductive sheet and electrically connect it to the conductive circuit 132, and the other end of the conductive sheet protrudes out of the substrate 131 to facilitate electrical connection with the main positive relay 21.

[0127] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 is provided with a first connecting hole 13101 and a second connecting hole 13102, the pre-charging relay 11 includes a first main body 111 and a first connecting terminal 112 provided on the first main body 111, the first connecting terminal 112 passes through the first connecting hole 13101 and is electrically connected to the conductive circuit 132; the pre-charging resistor 12 includes a second main body 121 and a second connecting terminal 122 provided on the second main body 121, the second connecting terminal 122 passes through the second connecting hole 13102 and is electrically connected to the conductive circuit 132.

[0128] The relay usually includes an electromagnet, a coil, an armature, an elastic member and a contact, wherein the contact is divided into a moving contact and a static contact, the moving contact is arranged on the armature, and the coil is wound outside the electromagnet. When the coil is energized, the electromagnet generates a magnetic force to attract the armature, so that the moving contact contacts the static contact, and the relay is in an electrically conductive state; when the coil is de-energized, the magnetic force of the electromagnet disappears, and the elastic member drives the armature to reset, so that the moving contact and the static contact are disconnected, and the relay is in an off state, thus realizing the circuit on-off control. The pins led out of the coil are used to be electrically connected to the control part to control the on-off of the relay through the control part input signal, and the pins led out of the contact are used to access the pre-charging circuit, so that the on-off of the pre-charging circuit is controlled by controlling the on-off of the pre-charging relay 11.

[0129] The pre-charge relay 11 includes a first body 111 and a first connection terminal 112. The first body 111 may refer to the main body of the pre-charge relay 11, and the first connection terminal 112 may refer to a pin in the pre-charge relay 11 for electrically connecting to the conductive circuit 132. The first body 111 may include parts such as an electromagnet, a coil, an armature, and an elastic member, and the first connection terminal 112 may refer to a pin led out of the coil or a pin led out of a contact.

[0130] The first connection hole 13101 may refer to a hole structure provided in the substrate 131, and the first connection terminal 112 is provided in the first connection hole 13101, which is convenient for fixing the pre-charge relay 11, and also convenient for the electrical connection between the first connection terminal 112 and the conductive circuit 132 in the substrate 131. The shape of the first connection terminal 112 may be adapted to the shape of the first connection hole 13101 to facilitate the plugging of the first connection terminal 112 and the first connection hole 13101. The first connection terminal 112 and the first connection hole 13101 may be interference fit or clearance fit. The first connection terminal 112 may be provided in a one-to-one correspondence with the first connection hole 13101, or one first connection terminal 112 may be plugged with multiple first connection holes 13101, that is, one first connection terminal 112 includes multiple parts, and the multiple parts are respectively provided in a one-to-one correspondence in multiple first connection holes 13101.

[0131] The pre-charging resistor 12 includes a second body 121 and a second connection terminal 122 . The second body 121 may refer to a main body portion of the pre-charging resistor 12 , and the second connection terminal 122 may refer to a pin extending from the pre-charging resistor 12 for electrical connection.

[0132] The second connection hole 13102 may refer to a hole structure provided in the substrate 131, and the second connection terminal 122 is provided in the second connection hole 13102, which is convenient for fixing the pre-charging resistor 12, and also convenient for the electrical connection between the second connection terminal 122 and the conductive circuit 132 in the substrate 131. The shape of the second connection terminal 122 may be adapted to the shape of the second connection hole 13102, so as to facilitate the plugging of the second connection terminal 122 and the second connection hole 13102. The second connection terminal 122 and the second connection hole 13102 may be interference fit or clearance fit. The second connection terminal 122 may be provided in a one-to-one correspondence with the second connection hole 13102, or one second connection terminal 122 may be plugged into a plurality of second connection holes 13102, that is, one second connection terminal 122 includes a plurality of parts, and the plurality of parts are respectively provided in a one-to-one correspondence in the plurality of second connection holes 13102.

[0133] By way of example, the number of the first connecting terminals 112 can be four, of which two first connecting terminals 112 are led out by the coil, and the other two first connecting terminals 112 are led out by the contacts; the number of the second connecting terminals 122 is two, and the two second connecting terminals 122 are respectively arranged at opposite ends of the second body 121; wherein, among the two first connecting terminals 112 led out by the contacts, one is electrically connected to the first connecting member 191 through the conductive circuit 132, the other is electrically connected to a second connecting terminal 122 through the conductive circuit 132, and the other second connecting terminal 122 is electrically connected to the second connecting member 192, so as to realize the series connection of the first connecting member 191, the pre-charging relay 11, the pre-charging resistor 12 and the second connecting member 192.

[0134] By adopting the technical solution of this embodiment, the first connecting terminal 112 of the pre-charging relay 11 is fixed in the first connecting hole 13101, and the fixed connection and electrical connection between the pre-charging relay 11 and the circuit board 13 are simple and convenient to operate; similarly, the second connecting terminal 122 of the pre-charging resistor 12 is fixed in the second connecting hole 13102, and the fixed connection and electrical connection between the pre-charging relay 11 and the circuit board 13 are simple and convenient to operate.

[0135] In some cases, since there are multiple similar terminals on the electronic components and the distances are close, the wiring harnesses are easily mixed up, causing functional errors in the power distribution device 100.

[0136] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the shape of the first connection hole 13101 is different from the shape of the second connection hole 13102; and / or, the size of the first connection hole 13101 is different from the size of the second connection hole 13102; and / or, the arrangement of the first connection holes 13101 is different from the arrangement of the second connection holes 13102.

[0137] The shape of the first connection hole 13101 and the shape of the second connection hole 13102 can be various, for example: circular, elliptical, triangular, etc.; the shape of the first connection hole 13101 is different from the shape of the second connection hole 13102: for example, the shape of the first connection hole 13101 is a rectangle, and the shape of the second connection hole 13102 is a circle, etc.

[0138] The size of the first connection hole 13101 is different from the size of the second connection hole 13102. It can be understood that in at least one direction, the size of the first connection hole 13101 is different from the size of the second connection hole 13102. For example, the shape of the first connection hole 13101 and the shape of the second connection hole 13102 are rectangular, and the length of the first connection hole 13101 is different from the length of the second connection hole 13102.

[0139] The arrangement of the first connection holes 13101 is different from that of the second connection holes 13102. For example, the first connection holes 13101 may be arranged vertically and the second connection holes 13102 may be arranged horizontally. Alternatively, when the number of the first connection holes 13101 and the number of the second connection holes 13102 are multiple, the multiple first connection holes 13101 are arranged in a ring and the multiple second connection holes 13102 are arranged in a matrix.

[0140] At least one of the corresponding shapes, sizes and arrangements of the first connection holes 13101 and the shapes, sizes and arrangements of the second connection holes 13102 is different, for example: the shape of the first connection hole 13101 is different from the shape of the second connection hole 13102, or the size of the first connection hole 13101 is different from the size of the second connection hole 13102, or the arrangement of the first connection holes 13101 is different from the arrangement of the second connection holes 13102; or at least two of the corresponding shapes, sizes and arrangements of the first connection holes 13101 and the shapes, sizes and arrangements of the second connection holes 13102 are different, or the shapes, sizes and arrangements of the first connection holes 13101 and the second connection holes 13102 are all different.

[0141] By adopting the technical solution of this embodiment, there is a difference between the first connection hole 13101 and the second connection hole 13102, which can reduce the risk of confusing the first connection hole 13101 and the second connection hole 13102, improve the accuracy of installation of the pre-charging relay 11 and the pre-charging resistor 12, and have a better anti-mistake effect.

[0142] In some cases, electronic components and wiring harnesses are connected by plugging and unplugging, which can easily become loose under vibration and shock, posing a greater risk of functional failure. In addition, electronic components and wiring harnesses are usually connected by manual plugging and unplugging, which makes manual assembly inefficient.

[0143] In other embodiments of the present application, see Figures 6 to 8 As shown, the first connection terminal 112 and the second connection terminal 122 are welded to the substrate 131 .

[0144] It can be understood that the first connection terminal 112 is welded to the substrate 131 , and the second connection terminal 122 is welded to the substrate 131 .

[0145] By adopting the technical solution of this embodiment, the first connecting terminal 112 and the second connecting terminal 122 are fixed to the substrate 131 by welding, which has good connection reliability and low risk of loosening, and is beneficial to improving the reliability of the pre-filled component 10. In addition, the use of welding makes it easy to realize automated welding, which is beneficial to improving assembly efficiency.

[0146] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 has a first pad 13103 and a second pad 13104 electrically connected to the conductive circuit 132 , the first pad 13103 is welded to the first connection terminal 112 , and the second pad 13104 is welded to the second connection terminal 122 .

[0147] The first soldering pad 13103 may refer to a conductive component disposed on the surface of the substrate 131. The first soldering pad 13103 is electrically connected to the conductive circuit 132. After the first soldering pad 13103 is welded to the first connecting terminal 112, the pre-charging relay 11 can be fixed and the pre-charging relay 11 and the conductive circuit 132 can be electrically connected. The assembly operation of the pre-charging relay 11 and the circuit board 13 is simple and quick.

[0148] The second soldering pad 13104 may refer to a conductive component disposed on the surface of the substrate 131. The second soldering pad 13104 is electrically connected to the conductive circuit 132. Thus, after the second soldering pad 13104 is welded to the second connecting terminal 122, the pre-charging resistor 12 can be fixed and the pre-charging resistor 12 and the conductive circuit 132 can be electrically connected. The assembly operation of the pre-charging resistor 12 and the circuit board 13 is simple and quick.

[0149] By adopting the technical solution of this embodiment, the first soldering pad 13103 is welded to the first connecting terminal 112, which can simultaneously realize the fixation of the pre-charging relay 11 and the electrical connection between the pre-charging relay 11 and the conductive circuit 132; similarly, the second soldering pad 13104 is welded to the second connecting terminal 122, which can simultaneously realize the fixation of the pre-charging resistor 12 and the electrical connection between the pre-charging resistor 12 and the conductive circuit 132. The assembly operation of the pre-charging resistor 12, the pre-charging relay 11 and the circuit board 13 is simple and quick, which is conducive to realizing the automation of assembly.

[0150] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 has a first side and a second side that are opposite to each other, the first body 111 and the second body 121 are located on the first side, and the first pad 13103 and the second pad 13104 are located on the second side.

[0151] Of the two opposite sides of the substrate 131, one side is the first side and the other side is the second side; the first body 111 and the first solder pad 13103 are respectively located on the opposite sides of the substrate 131, the second body 121 and the second solder pad 13104 are located on the opposite sides of the solder pad, and the first body 111 and the second body 121 are located on the same side of the substrate 131 (i.e., the first side).

[0152] By way of example, the first side and the second side may refer to two opposite sides of the substrate 131 along the thickness direction, the first connection hole 13101 and the second connection hole 13102 penetrate the substrate 131 along the thickness direction of the substrate 131, the first soldering pad 13103 and the second soldering pad 13104 are respectively arranged outside the first connection hole 13101 and the second connection hole 13102, and the first connection terminal 112 and the second connection terminal 122 respectively pass through the substrate 131 along the first connection hole 13101 and the second connection hole 13102, and then are respectively welded to the first soldering pad 13103 and the second soldering pad 13104. Of course, in other examples, the first side and the second side may refer to two opposite sides of the substrate 131 along the length direction, or the first side and the second side may refer to two opposite sides of the substrate 131 along the width direction.

[0153] By adopting the technical solution of this embodiment, the pre-charging relay 11 and the pre-charging resistor 12 can be welded from the same side (i.e., the second side) of the substrate 131, which makes the welding operation simpler and more conducive to automated welding, thereby improving assembly efficiency.

[0154] In some cases, the high-voltage sampling interface and the pre-filling control interface in the pre-filling component 10 are randomly set, and the interface design in the pre-filling component 10 is not uniform, which increases the difficulty of assembling the power distribution device 100.

[0155] In other embodiments of the present application, see Figure 5 As shown, the pre-filling component 10 also includes a high-voltage sampling component 14, which is installed on the substrate 131 and electrically connected to the conductive circuit 132 to collect the voltage difference of the pre-filling relay 11; the pre-filling component 10 also includes a first connector 15, which is installed on the substrate 131 and electrically connected to the conductive circuit 132 to control the on and off of the pre-filling relay 11.

[0156] The high-voltage sampling component 14 may refer to a component electrically connected to the first connection terminal 112 of the contact lead of the pre-charging relay 11. The high-voltage sampling component 14 is electrically connected to the two first connection terminals 112 of the contact lead of the pre-charging relay 11 through the conductive line 132 to obtain the voltage difference between the two connection terminals of the contact lead of the pre-charging relay 11, so that the operating state of the pre-charging component 10 can be judged according to the voltage difference, thereby improving the reliability of the use of the power distribution device 100. The high-voltage sampling component 14 may be, but is not limited to, a conductive sheet or a connector.

[0157] For example, the high-voltage sampling component 14 includes two conductive plates, which are respectively connected to two first connecting terminals 112 led out from the contacts of the pre-charging relay 11 through conductive lines 132. Since the first connecting member 191 is electrically connected to a first connecting terminal 112 led out from the contacts of the pre-charging relay 11, the first connecting member 191 can be directly used as a conductive plate in the high-voltage sampling component 14, which can reduce external terminals and help improve the assembly efficiency of the distribution device 100.

[0158] The first connector 15 may refer to a component electrically connected to the first connection terminal 112 led out of the coil of the pre-charging relay 11. The first connector 15 is electrically connected to the two first connection terminals 112 led out of the coil of the pre-charging relay 11 through a conductive line 132 to facilitate input of signals (for example, current, etc.) through the first connector 15, thereby controlling the on and off of the pre-charging relay 11.

[0159] The first connector 15 usually has a component that is plugged in with it to achieve electrical connection of the control circuit of the pre-charge relay 11; as an example, the first connector 15 is a socket, and the component that is plugged in with the first connector 15 can be a plug; or, the first connector 15 is a plug, and the component that is plugged in with the first connector 15 can be a socket, and the socket has an opening, and the plug is inserted into the opening, thereby achieving electrical connection between the plug and the socket.

[0160] By adopting the technical solution of this embodiment, the arrangement of the high-voltage sampling component 14 and the first connector 15 can facilitate the electrical connection between the pre-filling component 10 and the outside.

[0161] In some other embodiments of the present application, the high-voltage sampling component 14 and the first connector 15 are integrated to form a first integrated connector.

[0162] It can be understood that the high-voltage sampling component 14 and the first connector 15 are integrated together to form a first integrated connector of an integral structure.

[0163] By adopting the technical solution of this embodiment and using the first integrated connector, the pre-charged component 10 can be easily connected to the external circuit, which is conducive to using a unified connector for external connection. The power distribution device 100 is easy to assemble and has high assembly efficiency.

[0164] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10As shown, the substrate 131 is provided with a third connecting hole 13105 and a fourth connecting hole 13106, the high-voltage sampling component 14 includes a third main body 141 and a third connecting terminal 142 provided on the third main body 141, the third connecting terminal 142 is passed through the third connecting hole 13105 and is electrically connected to the conductive circuit 132; the first plug-in component 15 includes a fourth main body 151 and a fourth connecting terminal 152 provided on the fourth main body 151, the fourth connecting terminal 152 is passed through the fourth connecting hole 13106 and is electrically connected to the conductive circuit 132.

[0165] The high-voltage sampling component 14 includes a third body 141 and a third connection terminal 142. The third body 141 may refer to the main body of the high-voltage sampling component 14, and the third connection terminal 142 may refer to the end of the high-voltage sampling component 14 for electrical connection. As an example, the third body 141 may refer to the portion of the guiding plate located on the second side, and the third connection terminal 142 may refer to the portion of the guiding plate that passes through the first connection hole 13101 and the portion located on the first side.

[0166] The third connection hole 13105 may refer to a hole structure provided in the substrate 131, and the third connection terminal 142 is provided in the third connection hole 13105, which is convenient for fixing the high-voltage sampling component 14, and also convenient for the electrical connection between the third connection terminal 142 and the conductive circuit 132 in the substrate 131. The shape of the third connection terminal 142 may be adapted to the shape of the third connection hole 13105, so as to facilitate the plugging of the third connection terminal 142 and the third connection hole 13105. The third connection terminal 142 and the third connection hole 13105 may be interference fit or clearance fit. The third connection terminal 142 may be provided in a one-to-one correspondence with the third connection hole 13105, or one third connection terminal 142 may be plugged with multiple third connection holes 13105, that is, one third connection terminal 142 includes multiple parts, and the multiple parts are respectively provided in a one-to-one correspondence in multiple third connection holes 13105.

[0167] The first plug connector 15 includes a fourth body 151 and a fourth connection terminal 152, wherein the fourth body 151 may refer to the main body of the first plug connector 15, and the fourth connection terminal 152 may refer to a connection terminal for connecting to a circuit led out of the first plug connector 15. As an example, the first plug connector 15 is a socket, the fourth body 151 may refer to a portion of the socket with an opening, and the fourth connection terminal 152 may refer to a pin protruding out of the fourth body 151 and used to be electrically connected to the conductive circuit 132.

[0168] The fourth connection hole 13106 may refer to a hole structure provided in the substrate 131, and the fourth connection terminal 152 is provided in the fourth connection hole 13106, which facilitates the fixation of the first plug-in 15 and the electrical connection between the fourth connection terminal 152 and the conductive circuit 132 in the substrate 131. The shape of the fourth connection terminal 152 may be adapted to the shape of the fourth connection hole 13106 to facilitate the plugging of the fourth connection terminal 152 and the fourth connection hole 13106. The fourth connection terminal 152 and the fourth connection hole 13106 may be interference fit or clearance fit. The fourth connection terminal 152 may be provided in a one-to-one correspondence with the fourth connection hole 13106, or one fourth connection terminal 152 may be plugged with a plurality of fourth connection holes 13106, that is, one fourth connection terminal 152 includes a plurality of parts, and the plurality of parts are respectively provided in a one-to-one correspondence in the plurality of fourth connection holes 13106.

[0169] By adopting the technical solution of this embodiment, the third connecting terminal 142 of the high-voltage sampling component 14 is inserted into the third connecting hole 13105, and the fixed connection and electrical connection between the high-voltage sampling component 14 and the circuit board 13 are simple and convenient. Similarly, the fourth connecting terminal 152 of the first plug-in connector 15 is inserted into the fourth connecting hole 13106, and the fixed connection and electrical connection between the first plug-in connector 15 and the circuit board 13 are simple and convenient.

[0170] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the shape of the third connection hole 13105 is different from the shape of the fourth connection hole 13106; and / or, the size of the third connection hole 13105 is different from the size of the fourth connection hole 13106; and / or, the arrangement of the third connection holes 13105 is different from the arrangement of the fourth connection holes 13106.

[0171] The shape of the third connection hole 13105 and the shape of the fourth connection hole 13106 can be various, for example: circular, elliptical, triangular, etc.; the shape of the third connection hole 13105 is different from the shape of the fourth connection hole 13106: for example, the shape of the third connection hole 13105 is rectangular, and the shape of the fourth connection hole 13106 is circular, etc.

[0172] The size of the third connection hole 13105 is different from the size of the fourth connection hole 13106. It can be understood that in at least one direction, the size of the third connection hole 13105 is different from the size of the fourth connection hole 13106. For example, the shape of the third connection hole 13105 and the shape of the fourth connection hole 13106 are quadrilaterals, and the length of the third connection hole 13105 is different from the length of the fourth connection hole 13106.

[0173] The arrangement of the third connection holes 13105 is different from that of the fourth connection holes 13106. For example, the third connection holes 13105 may be arranged vertically and the fourth connection holes 13106 may be arranged horizontally; or, when the number of the third connection holes 13105 and the number of the fourth connection holes 13106 are multiple, the multiple third connection holes 13105 are arranged in a ring shape and the multiple fourth connection holes 13106 are arranged in a matrix shape.

[0174] The shape, size and arrangement of the third connection holes 13105 are different from at least one of the corresponding shapes, sizes and arrangements of the fourth connection holes 13106, for example: the shape of the third connection holes 13105 is different from the shape of the fourth connection holes 13106, or the size of the third connection holes 13105 is different from the size of the fourth connection holes 13106, or the arrangement of the third connection holes 13105 is different from the arrangement of the fourth connection holes 13106; or the shape, size and arrangement of the third connection holes 13105 are different from at least two of the corresponding shapes, sizes and arrangements of the fourth connection holes 13106, or the shape, size and arrangement of the third connection holes 13105 are different from the shape, size and arrangement of the fourth connection holes 13106.

[0175] By adopting the technical solution of this embodiment, there is a difference between the third connection hole 13105 and the fourth connection hole 13106, which can reduce the risk of confusing the third connection hole 13105 and the fourth connection hole 13106, improve the accuracy of installation of the high-voltage sampling component 14 and the first connector 15, and achieve a better fool-proofing effect.

[0176] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the third connection terminal 142 and the fourth connection terminal 152 are welded to the substrate 131 .

[0177] It can be understood that the third connection terminal 142 is welded to the substrate 131 , and the fourth connection terminal 152 is welded to the substrate 131 .

[0178] By adopting the technical solution of this embodiment, the third connecting terminal 142 and the fourth connecting terminal 152 are fixed to the substrate 131 by welding, and the connection reliability is good and the risk of loosening is small, which is beneficial to improving the reliability of the use of the pre-filled component 10; in addition, the use of welding makes it easy to realize automated welding, which is beneficial to improving assembly efficiency.

[0179] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10As shown, the substrate 131 has a third pad 13107 and a fourth pad 13108 electrically connected to the conductive circuit 132 , the third pad 13107 is welded to the third connection terminal 142 , and the fourth connection terminal 152 is welded to the fourth pad 13108 .

[0180] The third solder pad 13107 may refer to a conductive component disposed on the surface of the substrate 131. The third solder pad 13107 is electrically connected to the conductive circuit 132. Thus, after the third solder pad 13107 is welded to the third connecting terminal 142, both the high-voltage sampling component 14 and the conductive circuit 132 can be fixed and electrically connected. The assembly operation of the high-voltage sampling component 14 and the circuit board 13 is simple and quick.

[0181] The fourth solder pad 13108 may refer to a conductive component disposed on the surface of the substrate 131. The fourth solder pad 13108 is electrically connected to the conductive circuit 132. Thus, after the fourth solder pad 13108 is welded to the fourth connecting terminal 152, both the first connector 15 and the conductive circuit 132 can be fixed and electrically connected. The assembly operation of the first connector 15 and the circuit board 13 is simple and quick.

[0182] By adopting the technical solution of this embodiment, the third soldering pad 13107 is welded to the third connecting terminal 142, which can simultaneously realize the fixation of the high-voltage sampling component 14 and the electrical connection between the high-voltage sampling component 14 and the conductive circuit 132; similarly, the fourth soldering pad 13108 is welded to the fourth connecting terminal 152, which can simultaneously realize the fixation of the first plug-in connector 15 and the electrical connection between the first plug-in connector 15 and the conductive circuit 132. The assembly operation of the first plug-in connector 15, the high-voltage sampling component 14 and the circuit board 13 is simple and quick, which is conducive to realizing the automation of assembly.

[0183] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 has a first side and a second side that are opposite to each other; the third body 141 and the fourth body 151 are located on the first side, and the third pad 13107 and the fourth pad 13108 are located on the second side.

[0184] It can be understood that the third body 141 and the third solder pad 13107 are respectively located on opposite sides of the substrate 131, the fourth body 151 and the fourth solder pad 13108 are located on opposite sides of the solder pad, and the third body 141 and the fourth body 151 are located on the same side of the substrate 131 (ie, the first side).

[0185] By way of example, the first side and the second side may respectively refer to two opposite sides of the substrate 131 along the thickness direction, the third connection hole 13105 and the fourth connection hole 13106 penetrate the substrate 131 along the thickness direction of the substrate 131, the third soldering pad 13107 and the fourth soldering pad 13108 are respectively arranged outside the third connection hole 13105 and the fourth connection hole 13106, and the third connection terminal 142 and the fourth connection terminal 152 respectively pass through the substrate 131 along the third connection hole 13105 and the fourth connection hole 13106, and then are respectively welded to the third soldering pad 13107 and the fourth soldering pad 13108.

[0186] By adopting the technical solution of this embodiment, the high-voltage sampling component 14 and the first connector 15 can be welded from the same side (i.e., the second side) of the substrate 131, which makes the welding operation simpler and more conducive to automated welding, thereby improving assembly efficiency.

[0187] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the pre-charge component 10 also includes a first relay 16 and a fuse 17 . The first relay 16 and the fuse 17 are mounted on a substrate 131 . The first relay 16 and the fuse 17 are both electrically connected to a conductive line 132 .

[0188] The pre-charge component 10 usually integrates some components such as relays and fuses 17 in other circuits. For example, the pre-charge component 10 integrates circuits for heating the battery cells 300 or for controlling components such as air conditioners. The relays and fuses 17 in these circuits can be integrated on the circuit board 13.

[0189] The first relay 16 may refer to other relays in the pre-charging component 10 except the pre-charging relay 11. The number of the first relays 16 may be one, two, three or more than four, and the specific number may be set according to design requirements.

[0190] Fuse 17 may refer to a protective device in a circuit, and fuse 17 is also called insurance; when the current exceeds a set value, fuse 17 will melt, cut off the circuit, play a protective role, and reduce the damage of the circuit to overload and short circuit. The number of fuses 17 can be one, two, three or more than four, which can be set according to design requirements.

[0191] The first relay 16 and the fuse 17 are mounted on the substrate 131 . The first relay 16 and the fuse 17 can be fixed on the substrate 131 by screwing, clamping, bonding, welding, etc.

[0192] The first relay 16 and the fuse 17 are both electrically connected to the conductive circuit 132, that is, the first relay 16 and the fuse 17 are electrically connected to the corresponding circuit through the conductive circuit 132 of the circuit board 13, wherein the first relay 16 and the fuse 17 can be connected in parallel or in series through the conductive circuit 132, and the specific circuit connection of the first relay 16, the fuse 17, the pre-charge relay 11 and the pre-charge resistor 12 can be electrically connected according to the corresponding circuit schematic diagram.

[0193] Through the technical solution of this embodiment, the first relay 16 and the fuse 17 are electrically connected to the conductive line 132 in the circuit board 13. On the one hand, the use of wiring harnesses can be reduced and the space occupied by the pre-charged component 10 can be reduced; on the other hand, the connection of the pre-charged component 10 can also integrate the first relay 16 and the fuse 17 in other circuits, so that the pre-charged component 10 has diverse functions and better practicality, and can also improve the integration of the circuit and reduce the difficulty of circuit layout of the battery 1100 and electrical equipment.

[0194] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the first relay 16 includes a heating relay 16a; and / or the fuse 17 includes at least one of a heating fuse 17a and a DC-to-DC fuse 17b.

[0195] The circuit for heating the battery cell 300 is a heating circuit. The heating relay 16a may refer to a relay in the heating circuit, that is, the on-off of the heating circuit is controlled by the on-off of the heating relay 16a. The heating fuse 17a may refer to the fuse 17 in the heating circuit. The heating relay 16a and the heating fuse 17a may be connected in series to realize the on-off of the heating circuit through the heating relay 16a. The heating circuit can be protected by the heating fuse 17a to reduce the damage of the heating circuit to overload and short circuit.

[0196] In the vehicle 1000, the DC-to-DC circuit is used to convert the high-voltage DC power generated by the battery unit 300 into low-voltage DC power to supply low-voltage electronic devices in the vehicle 1000. These devices include lights, audio, air conditioners, etc. The DC-to-DC fuse 17b may refer to the fuse 17 in the DC-to-DC circuit, which is used to protect electronic components in the DC-to-DC circuit.

[0197] In a possible embodiment, the first relay 16 includes a heating relay 16 a , and the pre-filling assembly 10 is integrated with the heating relay 16 a .

[0198] In another possible embodiment, the fuse 17 includes at least one of a heating fuse 17a and a DC-to-DC fuse 17b. It can be understood that the fuse 17 includes the heating fuse 17a, or the fuse 17 includes the DC-to-DC fuse 17b, or the fuse 17 includes the heating fuse 17a and the DC-to-DC fuse 17b.

[0199] In yet another possible embodiment, the first relay 16 includes a heating relay 16 a ; and the fuse 17 includes at least one of a heating fuse 17 a and a DC-to-DC fuse 17 b .

[0200] By adopting the technical solution of this embodiment, the first relay 16 and the fuse 17 can be flexibly arranged on the circuit board 13 to meet different usage requirements.

[0201] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 is provided with a fifth connection hole 13109 and a sixth connection hole 13110, the first relay 16 includes a fifth body 161 and a fifth connection terminal 162 provided on the fifth body 161, the fifth connection terminal 162 passes through the fifth connection hole 13109 and is electrically connected to the conductive circuit 132, the fuse 17 includes a sixth body 171 and a sixth connection terminal 172 provided on the sixth body 171, the sixth connection terminal 172 passes through the sixth connection hole 13110 and is electrically connected to the conductive circuit 132.

[0202] The first relay 16 includes a fifth body 161 and a fifth connection terminal 162, wherein the fifth body 161 may refer to the main body of the first relay 16, and the fifth connection terminal 162 may refer to a pin in the first relay 16 for electrically connecting to the conductive circuit 132. The fifth body 161 may include parts of components such as an electromagnet, a coil, an armature, and an elastic member, and the fifth connection terminal 162 may refer to a pin led out of the coil, or may refer to a pin led out of a contact.

[0203] The fifth connection hole 13109 may refer to a hole structure provided in the substrate 131, and the fifth connection terminal 162 is provided in the fifth connection hole 13109, which is convenient for fixing the first relay 16 and for electrically connecting the fifth connection terminal 162 with the conductive circuit 132 in the substrate 131. The shape of the fifth connection terminal 162 may be adapted to the shape of the fifth connection hole 13109 to facilitate the plugging of the fifth connection terminal 162 with the fifth connection hole 13109. The fifth connection terminal 162 may be interference fit or clearance fit with the fifth connection hole 13109. The fifth connection terminal 162 may be provided in a one-to-one correspondence with the fifth connection hole 13109, or one fifth connection terminal 162 may be plugged with a plurality of fifth connection holes 13109, that is, one fifth connection terminal 162 includes a plurality of parts, and the plurality of parts are respectively provided in a one-to-one correspondence with the plurality of fifth connection holes 13109.

[0204] The fuse 17 includes a sixth body 171 and a sixth connection terminal 172 . The sixth body 171 may refer to a main body portion of the fuse 17 , and the sixth connection terminal 172 may refer to a pin led out of the fuse 17 for electrical connection.

[0205] The sixth connection hole 13110 may refer to a hole structure provided in the substrate 131, and the sixth connection terminal 172 is provided in the sixth connection hole 13110, which is convenient for fixing the fuse 17 and for electrically connecting the sixth connection terminal 172 with the conductive circuit 132 in the substrate 131. The shape of the sixth connection terminal 172 may be adapted to the shape of the sixth connection hole 13110 to facilitate the plugging of the sixth connection terminal 172 with the sixth connection hole 13110. The sixth connection terminal 172 and the sixth connection hole 13110 may be interference fit or clearance fit. The sixth connection terminal 172 may be provided in a one-to-one correspondence with the sixth connection hole 13110, or one sixth connection terminal 172 may be plugged with a plurality of sixth connection holes 13110, that is, one sixth connection terminal 172 includes a plurality of parts, and the plurality of parts are respectively provided in a one-to-one correspondence in the plurality of sixth connection holes 13110.

[0206] By way of example, the number of the fifth connection terminals 162 can be four, of which two fifth connection terminals 162 are led out from the coil of the first relay 16, and the other two fifth connection terminals 162 are led out from the contacts of the first relay 16; the number of the sixth connection terminals 172 of the heating fuse 17a is two, and the sixth connection terminals 172 of the two heating fuses 17a are respectively arranged at the opposite ends of the sixth body 171 of the heating fuse 17a; the number of the sixth connection terminals 172 of the DC-to-DC fuse 17b is two, and the sixth connection terminals 172 of the two DC-to-DC fuses 17b are respectively arranged at the opposite ends of the sixth body 171 of the DC-to-DC fuse 17b.

[0207] By adopting the technical solution of this embodiment, the fifth connecting terminal 162 of the first relay 16 is fixed in the fifth connecting hole 13109, and the fixed connection and electrical connection between the first relay 16 and the circuit board 13 are simple and convenient. Similarly, the sixth connecting terminal 172 of the fuse 17 is fixed in the sixth connecting hole 13110, and the fixed connection and electrical connection between the first relay 16 and the circuit board 13 are simple and convenient.

[0208] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the shape of the fifth connection hole 13109 is different from the shape of the sixth connection hole 13110; and / or, the size of the fifth connection hole 13109 is different from the size of the sixth connection hole 13110; and / or, the arrangement of the fifth connection hole 13109 is different from the arrangement of the sixth connection hole 13110.

[0209] The shape of the fifth connection hole 13109 and the shape of the sixth connection hole 13110 can be various, for example: circular, elliptical, triangular, etc.; the shape of the fifth connection hole 13109 is different from the shape of the sixth connection hole 13110: for example, the shape of the fifth connection hole 13109 is rectangular, and the shape of the sixth connection hole 13110 is circular, etc.

[0210] The size of the fifth connection hole 13109 is different from the size of the sixth connection hole 13110. It can be understood that, in at least one direction, the size of the fifth connection hole 13109 is the same as the size of the sixth connection hole 13110; for example, the shape of the fifth connection hole 13109 and the shape of the sixth connection hole 13110 are rectangular, and the length of the fifth connection hole 13109 is different from the length of the sixth connection hole 13110.

[0211] The arrangement of the fifth connection holes 13109 is different from that of the sixth connection holes 13110. For example, the fifth connection holes 13109 may be arranged vertically and the sixth connection holes 13110 may be arranged horizontally; or, when the number of the fifth connection holes 13109 and the number of the sixth connection holes 13110 are multiple, the multiple fifth connection holes 13109 are arranged in a ring shape and the multiple sixth connection holes 13110 are arranged in a matrix shape.

[0212] The shape, size and arrangement of the fifth connection holes 13109 are different from at least one of the corresponding shapes, sizes and arrangements of the sixth connection holes 13110, for example: the shape of the fifth connection holes 13109 is different from the shape of the sixth connection holes 13110, or the size of the fifth connection holes 13109 is different from the size of the sixth connection holes 13110, or the arrangement of the fifth connection holes 13109 is different from the arrangement of the sixth connection holes 13110; or the shape, size and arrangement of the fifth connection holes 13109 are different from at least two of the corresponding shapes, sizes and arrangements of the sixth connection holes 13110, or the shape, size and arrangement of the fifth connection holes 13109 are all different from the shape, size and arrangement of the sixth connection holes 13110.

[0213] By adopting the technical solution of this embodiment, there is a difference between the fifth connection hole 13109 and the sixth connection hole 13110, which can reduce the risk of confusing the fifth connection hole 13109 with the sixth connection hole 13110, improve the accuracy of installation of the first relay 16 and the fuse 17, and have a better fool-proofing effect.

[0214] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the fifth connection terminal 162 and the sixth connection terminal 172 are welded to the substrate 131 .

[0215] It can be understood that the fifth connection terminal 162 is welded to the substrate 131 , and the sixth connection terminal 172 is welded to the substrate 131 .

[0216] By adopting the technical solution of this embodiment, the fifth connecting terminal 162 and the sixth connecting terminal 172 are fixed to the substrate 131 by welding, and the connection reliability is good and the risk of loosening is small, which is beneficial to improving the reliability of the use of the pre-filled component 10; in addition, the use of welding method can easily realize automated welding, which is beneficial to improving assembly efficiency.

[0217] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 has a fifth pad 13111 and a sixth pad 13112 electrically connected to the conductive circuit 132 , the fifth pad 13111 is welded to the fifth connection terminal 162 , and the sixth connection terminal 172 is welded to the sixth pad 13112 .

[0218] The fifth solder pad 13111 may refer to a conductive component disposed on the surface of the substrate 131. The fifth solder pad 13111 is electrically connected to the conductive circuit 132. Thus, after the fifth solder pad 13111 is welded to the fifth connecting terminal 162, both the first relay 16 can be fixed and the first relay 16 can be electrically connected to the conductive circuit 132. The assembly operation of the first relay 16 and the circuit board 13 is simple and quick.

[0219] The sixth soldering pad 13112 may refer to a conductive component disposed on the surface of the substrate 131. The sixth soldering pad 13112 is electrically connected to the conductive circuit 132. Thus, after the sixth soldering pad 13112 is welded to the sixth connecting terminal 172, the fuse 17 can be fixed and the fuse 17 can be electrically connected to the conductive circuit 132. The assembly operation of the fuse 17 and the circuit board 13 is simple and quick.

[0220] By adopting the technical solution of this embodiment, the fifth soldering pad 13111 is welded to the fifth connecting terminal 162, which can simultaneously realize the fixation of the first relay 16 and the electrical connection between the first relay 16 and the conductive circuit 132; similarly, the sixth soldering pad 13112 is welded to the sixth connecting terminal 172, which can simultaneously realize the fixation of the fuse 17 and the electrical connection between the fuse 17 and the conductive circuit 132. The assembly operation of the fuse 17, the first relay 16 and the circuit board 13 is simple and quick, which is conducive to realizing the automation of assembly.

[0221] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 has a first side and a second side that are opposite to each other; the fifth body 161 and the sixth body 171 are located on the first side, and the fifth pad 13111 and the sixth pad 13112 are located on the second side.

[0222] Of the two opposite sides of the substrate 131, one side is the first side and the other side is the second side; the fifth body 161 and the fifth solder pad 13111 are respectively located on the opposite sides of the substrate 131, the sixth body 171 and the sixth solder pad 13112 are located on the opposite sides of the solder pads, and the fifth body 161 and the sixth body 171 are located on the same side of the substrate 131 (i.e., the first side).

[0223] By way of example, the first side and the second side may respectively refer to two opposite sides of the substrate 131 along the thickness direction, the fifth connection hole 13109 and the sixth connection hole 13110 penetrate the substrate 131 along the thickness direction of the substrate 131, the fifth pad 13111 and the sixth pad 13112 are respectively arranged outside the fifth connection hole 13109 and the sixth connection hole 13110, and the fifth connection terminal 162 and the sixth connection terminal 172 respectively pass through the substrate 131 along the fifth connection hole 13109 and the sixth connection hole 13110, and then are respectively welded to the fifth pad 13111 and the sixth pad 13112. Of course, in other examples, the first side and the second side may respectively refer to two opposite sides of the substrate 131 along the length direction, or the first side and the second side may respectively refer to two opposite sides of the substrate 131 along the width direction.

[0224] By adopting the technical solution of this embodiment, the first relay 16 and the fuse 17 can be welded from the same side (ie, the second side) of the substrate 131, which makes the welding operation simpler and more conducive to automatic welding, thereby improving assembly efficiency.

[0225] In other embodiments of the present application, see Figure 5 and Figure 6 As shown, in the width direction of the pre-charging resistor 12, the pre-charging relay 11 and the first relay 16 are located on the same side of the pre-charging resistor 12; the pre-charging relay 11 and the first relay 16 are arranged along the length direction of the pre-charging resistor 12; and / or, the fuse 17 is located on the side of the pre-charging resistor 12 along the width direction.

[0226] See also Figure 5 and Figure 6 As shown, the pre-charging resistor 12 has a length direction, a width direction and a height direction. The height direction of the pre-charging resistor 12 can refer to the Z direction in the figure, the width direction of the pre-charging resistor 12 can refer to the Y direction in the figure, and the length direction of the pre-charging resistor 12 can refer to the X direction in the figure. The second body 121 defines the shape structure of the pre-charging resistor 12. The height direction of the second body 121 can be the height direction of the pre-charging resistor 12, the length direction of the second body 121 is the length direction of the pre-charging resistor 12, and the width direction of the second body 121 is the width direction of the pre-charging resistor 12.

[0227] The pre-filled relay 11 has a height direction, a length direction and a width direction. The height direction of the pre-filled relay 11 may be parallel to the Z direction, the width direction of the pre-filled relay 11 may be parallel to the X direction, and the length direction of the pre-filled relay 11 may be parallel to the X direction. The first body 111 defines the outer structure of the pre-filled relay 11. The height direction of the first body 111 may be the height direction of the pre-filled relay 11, the length direction of the first body 111 is the length direction of the pre-filled relay 11, and the width direction of the first body 111 is the width direction of the pre-filled relay 11.

[0228] The first relay 16 has a height direction, a length direction and a width direction. The height direction of the first relay 16 may be parallel to the Z direction, the width direction of the first relay 16 may be parallel to the X direction, and the length direction of the first relay 16 may be parallel to the X direction. The fifth body 161 defines the outer structure of the first relay 16. The height direction of the fifth body 161 may be the height direction of the first relay 16, the length direction of the fifth body 161 is the length direction of the first relay 16, and the width direction of the fifth body 161 is the width direction of the first relay 16.

[0229] The pre-charging resistor 12 is in the shape of a long strip, and the length of the pre-charging resistor 12 is greater than the width and height of the pre-charging resistor 12 ; the first relay 16 and the pre-charging relay 11 are in the shape of a cube, and the length of the first relay 16 and the length of the pre-charging relay 11 are both less than the length of the pre-charging resistor 12 .

[0230] The fuse 17 has a height direction, a length direction and a width direction. The height direction of the fuse 17 may be parallel to the Z direction, the width direction of the fuse 17 may be parallel to the X direction, and the length direction of the fuse 17 may be parallel to the X direction. The sixth body 171 defines the outer structure of the fuse 17. The height direction of the sixth body 171 may be the height direction of the fuse 17, the length direction of the sixth body 171 is the length direction of the fuse 17, and the width direction of the sixth body 171 is the width direction of the fuse 17. The fuse 17 is in the shape of an elongated strip, the width and height of the fuse 17 are both smaller than the length of the fuse 17, and the volume of the fuse 17 is relatively small.

[0231] In one possible implementation, in the width direction of the pre-charging resistor 12, the pre-charging relay 11 and the first relay 16 are located on the same side of the pre-charging resistor 12; the pre-charging relay 11 and the first relay 16 are arranged along the length direction of the pre-charging resistor 12; such a layout can utilize the side space in the width direction of the pre-charging resistor 12 to install the first relay 16 and the pre-charging relay 11, which can reduce the size of the circuit board 13 in the length direction of the pre-charging resistor 12, so that the size of the circuit board 13 is more square, and the pre-charging component 10 is more square as a whole, which facilitates the installation of the pre-charging component 10 in the power distribution device 100.

[0232] In another possible embodiment, the fuse 17 is located on the side of the pre-charging resistor 12 along the width direction, which can make full use of the side space of the pre-charging resistor 12 and reduce the size of the circuit board 13 in the length direction of the pre-charging resistor 12, so that the size of the circuit board 13 is more square, and the pre-charging component 10 is more square as a whole, which facilitates the installation of the pre-charging component 10 in the power distribution device 100.

[0233] In another possible embodiment, in the width direction of the pre-charging resistor 12, the pre-charging relay 11 and the first relay 16 are located on the same side of the pre-charging resistor 12; the pre-charging relay 11 and the first relay 16 are arranged along the length direction of the pre-charging resistor 12; the fuse 17 is located on the side of the pre-charging resistor 12 along the width direction, and the fuse 17, the pre-charging relay 11 and the first relay 16 are all located on the side of the pre-charging resistor 12 in the width direction. This can better reduce the size of the circuit board 13 in the length direction of the pre-charging resistor 12, make the size of the circuit board 13 more square, and make the pre-charging component 10 more square as a whole, so that the pre-charging component 10 is convenient to install in the power distribution device 100.

[0234] By adopting the technical solution of this embodiment, the side space in the width direction of the pre-charging resistor 12 can be utilized to reduce the size of the circuit board 13 in the length direction of the pre-charging resistor 12, so that the size of the circuit board 13 is more square, and the pre-charging component 10 is more square as a whole, which facilitates the installation of the pre-charging component 10 in the distribution device 100.

[0235] The shape of the circuit board 13 can be designed according to the arrangement of the electronic components in the pre-filled assembly 10, so that the circuit board 13 can stably support the electronic components; as an example, using the above layout, the circuit board 13 is rectangular, and the circuit board 13 has a height direction, a length direction and a width direction. The height direction of the circuit board 13 can be parallel to the Z direction, the width direction of the circuit board 13 can be parallel to the X direction, and the length direction of the circuit board 13 can be parallel to the X direction. The substrate 131 defines the outer structure of the circuit board 13. The height direction of the substrate 131 can be the height direction of the circuit board 13, the length direction of the substrate 131 is the length direction of the circuit board 13, and the width direction of the substrate 131 is the width direction of the circuit board 13.

[0236] In other embodiments of the present application, see Figure 5 and Figure 6 As shown, at least one fuse 17 is located between the pre-charging resistor 12 and the pre-charging relay 11, or, at least one fuse 17 is located between the pre-charging resistor 12 and the first relay 16; or, at least one fuse 17 is located on the side of the pre-charging relay 11 facing away from the pre-charging resistor 12; or, at least one fuse 17 is located on the side of the first relay 16 facing away from the pre-charging resistor 12; or, the fuse 17 is located on the side of the pre-charging resistor 12 facing away from the pre-charging relay 11.

[0237] In one possible embodiment, at least one fuse 17 is located between the pre-charging resistor 12 and the pre-charging relay 11; it is understandable that, when there is one fuse 17, the fuse 17 is located between the pre-charging resistor 12 and the pre-charging relay 11; when there are multiple fuses 17, a part of the fuses 17 are located between the pre-charging resistor 12 and the pre-charging relay 11, and another part of the fuses 17 are located between the first relay 16 and the pre-charging resistor 12, or, all of the fuses 17 are located between the pre-charging resistor 12; the fuse 17 is located between the pre-charging resistor 12 and the pre-charging relay 11, so that the pre-charging resistor 12 and the pre-charging relay 11 can protect the fuse 17, reduce the risk of damage to the fuse 17, and improve the reliability of the use of the pre-charging component 10.

[0238] As an example, the heating fuse 17 a is located between the pre-charging resistor 12 and the pre-charging relay 11 .

[0239] In another possible embodiment, at least one fuse 17 is located between the pre-charging resistor 12 and the first relay 16; it is understandable that, when the number of fuses 17 is one, fuse 17 is located between the pre-charging resistor 12 and the first relay 16; when the number of fuses 17 is multiple, a part of the fuses 17 are located between the pre-charging resistor 12 and the first relay 16, and another part of the fuses 17 are located between the first relay 16 and the pre-charging resistor 12, or, all of the fuses 17 are located between the first relay 16 and the pre-charging resistor 12; the fuse 17 is located between the pre-charging resistor 12 and the first relay 16, so that the pre-charging resistor 12 and the first relay 16 can protect the fuse 17, reduce the risk of damage to the fuse 17, and improve the reliability of the use of the pre-charging component 10.

[0240] As an example, the DC-to-DC fuse 17 b is located between the pre-charging resistor 12 and the heating relay 16 a .

[0241] In another possible embodiment, at least one fuse 17 is located on the side of the pre-charging relay 11 facing away from the pre-charging resistor 12; it can be understood that, when there is only one fuse 17, the pre-charging relay 11 is located between the fuse 17 and the pre-charging resistor 12; when there are multiple fuses 17, a part of the fuses 17 are located on the side of the pre-charging relay 11 facing away from the pre-charging resistor 12, and another part of the fuses 17 are located between the first relay 16 and the pre-charging resistor 12 or on the side of the first relay 16 facing away from the pre-charging resistor 12, or all of the fuses 17 are located on the side of the pre-charging relay 11 facing away from the pre-charging resistor 12.

[0242] In another possible embodiment, at least one fuse 17 is located on the side of the first relay 16 facing away from the pre-charging resistor 12; it can be understood that, when there is one fuse 17, the first relay 16 is located between the fuse 17 and the pre-charging resistor 12; when there are multiple fuses 17, a part of the fuses 17 are located on the side of the first relay 16 facing away from the pre-charging resistor 12, and another part of the fuses 17 are located between the pre-charging relay 11 and the pre-charging resistor 12 or on the side of the pre-charging relay 11 facing away from the pre-charging resistor 12, or all the fuses 17 are located on the side of the first relay 16 facing away from the pre-charging resistor 12.

[0243] In yet another possible implementation, the fuse 17 is located on a side of the pre-charging resistor 12 facing away from the pre-charging relay 11 .

[0244] By adopting the technical solution of this embodiment, the fuse 17 can be flexibly arranged on the side of the pre-charging resistor 12 along the width direction to meet different needs.

[0245] In other embodiments of the present application, Figure 6 As shown, there are multiple fuses 17 , and the multiple fuses 17 are arranged along the length direction of the pre-charging resistor 12 .

[0246] A plurality of fuses 17 are arranged along the length direction of the pre-charging resistor 12 . For example, a heating fuse 17 a and a DC-to-DC fuse 17 b are arranged along the length direction of the pre-charging resistor 12 .

[0247] By adopting the technical solution of this embodiment, multiple fuses 17 are arranged along the length direction of the pre-charging resistor 12, which can make full use of the space in the width direction of the circuit board 13, which is beneficial to improving the structural compactness of the pre-charging component 10 and reducing the size of the pre-charging component 10. The pre-charging component 10 can be installed in the distribution device 100 more conveniently and simply.

[0248] In other embodiments of the present application, see Figure 5 As shown, the pre-filled component 10 also includes a second connector, which is installed on the substrate 131 and is electrically connected to the conductive circuit 132 to control the on and off of the first relay 16.

[0249] The second connector may refer to a component electrically connected to the second connection terminal 122 led out of the coil of the first relay 16. The second connector is electrically connected to the two second connection terminals 122 led out of the coil of the first relay 16 through a conductive line 132 to facilitate input of signals (for example, current, etc.) through the second connector, thereby controlling the on and off of the first relay 16.

[0250] The second connector usually has a component that is plugged into it to achieve electrical connection of the control circuit of the first relay 16; as an example, the second connector is a socket, and the component that is plugged into it can be a plug; or, the second connector is a plug, and the component that is plugged into it can be a socket, and the socket has an opening, and the plug is inserted into the opening, so as to achieve electrical connection between the plug and the socket.

[0251] By adopting the technical solution of this embodiment, the provision of the second connector can facilitate the electrical connection between the pre-filled component 10 and the outside.

[0252] In other embodiments of the present application, see Figure 5 As shown, the pre-charging component 10 also includes a high-voltage sampling component 14, which is installed on the substrate 131 and electrically connected to the conductive circuit 132 to collect the voltage difference of the pre-charging relay 11; the pre-charging component 10 also includes a first connector 15, which is installed on the substrate 131 and electrically connected to the conductive circuit 132 to control the on and off of the pre-charging relay 11; the high-voltage sampling component 14, the first connector 15 and at least two of the second connectors are integrated to form a second integrated connector 18.

[0253] It can be understood that the high-voltage sampling and the first connector 15 are integrated to form an integral second integrated connector 18, and the second connector and the second integrated connector 18 are two separate components; or, the high-voltage sampling and the second connector are integrated to form an integral second integrated connector 18, and the first connector 15 and the second integrated connector 18 are two separate components; or, the second connector and the first connector 15 are integrated to form an integral second integrated connector 18, and the high-voltage sampling component 14 and the second integrated connector 18 are two separate components; or, the high-voltage sampling component 14, the first connector 15 and the second connector are integrated to form an integral second integrated connector 18.

[0254] By adopting the technical solution of this embodiment and using the second integrated connector 18, the pre-charged component 10 can be easily connected to the external circuit, which is conducive to using a unified connector for external connection. The power distribution device 100 is easy to assemble and has high assembly efficiency.

[0255] In other embodiments of the present application, see Figure 5 As shown, when the first connector 15 and the second connector are integrated to form the second integrated connector 18 , the high voltage sampling component 14 and the second integrated connector 18 are respectively located on opposite sides of the pre-charging resistor 12 along the length direction.

[0256] The second integrated connector 18 is integrated by the first connector 15 and the second connector, the high-voltage sampling component 14 and the second integrated connector 18 are two separate components, and the high-voltage sampling component 14 is located on one side of the length direction of the pre-charging resistor 12, and the second integrated connector 18 is located on the other side of the length direction of the pre-charging resistor 12. That is, the high-voltage sampling component 14 and the second integrated connector 18 are separately arranged, and in some cases, the voltage in the circuit used to control the on and off of the relay is low, while the voltage in the circuit connected to the relay is usually high, so that the high and low voltage separation can be achieved, and the reliability of the use of the pre-charging component 10 is improved.

[0257] By adopting the technical solution of this embodiment, the high-voltage sampling component 14 and the second integrated connector 18 are separately arranged, which can achieve high and low voltage separation and improve the reliability of the pre-charge component 10; in addition, the second integrated connector 18 and the high-voltage sampling component 14 are respectively pre-charged on opposite sides of the resistor 12 along the length direction, which is conducive to improving the compactness of the structure.

[0258] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, when the first connector 15 and the second connector are integrated to form the second integrated connector 18, the substrate 131 is provided with a seventh connecting hole 13113, and the second connector includes a seventh body 181 and a seventh connecting terminal 182 provided on the seventh body 181, and the seventh connecting terminal 182 passes through the seventh connecting hole 13113 and is electrically connected to the conductive circuit 132.

[0259] The second integrated connector 18 includes a seventh body 181 and a seventh connection terminal 182 . The seventh body 181 may refer to the main body of the second integrated connector 18 , and the seventh connection terminal 182 may refer to a connection terminal led out of the second integrated connector 18 for accessing a circuit.

[0260] For example, the second integrated connector 18 is a socket, the seventh body 181 may refer to a portion of the socket having an opening, and the seventh connection terminal 182 may refer to a pin protruding from the seventh body 181 and used to electrically connect to the conductive line 132, wherein the seventh body 181 may be provided with a plurality of openings, one opening corresponding to controlling the on and off of a relay, thereby meeting the on and off control requirements of a plurality of relays. Specifically, the seventh body 181 is provided with two openings, one of which corresponds to the heating relay 16a, and the other corresponds to the pre-charging relay 11.

[0261] The seventh connection hole 13113 may refer to a hole structure provided in the substrate 131, and the seventh connection terminal 182 is provided in the seventh connection hole 13113, which is convenient for fixing the second integrated connector 18, and also convenient for the electrical connection between the seventh connection terminal 182 and the conductive circuit 132 in the substrate 131. The shape of the seventh connection terminal 182 may be adapted to the shape of the seventh connection hole 13113, so as to facilitate the plugging of the seventh connection terminal 182 and the seventh connection hole 13113. The seventh connection terminal 182 and the seventh connection hole 13113 may be interference fit or clearance fit. The seventh connection terminal 182 may be provided in a one-to-one correspondence with the seventh connection hole 13113, or one seventh connection terminal 182 may be plugged with a plurality of seventh connection holes 13113, that is, one seventh connection terminal 182 includes a plurality of parts, and the plurality of parts are respectively provided in a one-to-one correspondence in the plurality of seventh connection holes 13113.

[0262] By adopting the technical solution of this embodiment, the seventh connection terminal 182 of the second integrated connector 18 is inserted into the seventh connection hole 13113, and the fixed connection and electrical connection between the second integrated connector 18 and the circuit board 13 are simple and convenient.

[0263] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the seventh connection terminal 182 is welded to the substrate 131 .

[0264] It can be understood that the seventh connection terminal 182 is welded to the substrate 131 .

[0265] By adopting the technical solution of this embodiment, the seventh connecting terminal 182 is fixed to the substrate 131 by welding, which has good connection reliability and low risk of loosening, and is beneficial to improving the reliability of the pre-filled component 10. In addition, the welding method is adopted, which is easy to realize automated welding, and is beneficial to improving assembly efficiency.

[0266] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 has a seventh pad 13114 electrically connected to the conductive circuit 132 , and the seventh pad 13114 is welded to the seventh connection terminal 182 .

[0267] The seventh solder pad 13114 may refer to a conductive component disposed on the surface of the substrate 131. The seventh solder pad 13114 is electrically connected to the conductive circuit 132. Thus, after the seventh solder pad 13114 is welded to the seventh connection terminal 182, both the second integrated connector 18 and the conductive circuit 132 can be fixed and electrically connected. The assembly operation of the second integrated connector 18 and the circuit board 13 is simple and quick.

[0268] By adopting the technical solution of this embodiment, the seventh solder pad 13114 is welded to the seventh connection terminal 182, which can simultaneously realize the fixation of the second integrated connector 18 and the electrical connection between the second integrated connector 18 and the conductive circuit 132. The assembly operation of the second integrated connector 18 and the circuit board 13 is simple and quick, which is conducive to realizing the automation of assembly.

[0269] In other embodiments of the present application, see Figure 5 , Fig. 9 and Fig.10 As shown, the substrate 131 has a first side and a second side that are oppositely disposed; the seventh body 181 is located on the first side, and the seventh pad 13114 is located on the second side.

[0270] It can be understood that the seventh body 181 and the seventh pad 13114 are respectively located on two opposite sides of the substrate 131 .

[0271] By way of example, the first side and the second side may respectively refer to two opposite sides of the substrate 131 along the thickness direction, the seventh connection hole 13113 penetrates the substrate 131 along the thickness direction of the substrate 131, the seventh soldering pads 13114 are respectively arranged outside the seventh connection hole 13113, and the seventh connection terminal 182 passes through the substrate 131 along the seventh connection hole 13113 and then is respectively welded to the seventh soldering pads 13114.

[0272] Generally, the number of the seventh connection terminals 182 of the second integrated connector 18 is large, so as to be connected to different circuits, thereby controlling the on and off of the pre-charging relay 11 and the first relay 16 respectively, and the installation and fixing operation of the second integrated connector 18 is cumbersome.

[0273] By adopting the technical solution of this embodiment, the seventh connection terminal 182 of the second integrated connector can be welded from the same side (i.e., the second side) of the substrate 131, which makes the welding operation simpler and more conducive to automated welding, thereby improving assembly efficiency.

[0274] The present application is described below in conjunction with some embodiments.

[0275] Embodiment 1

[0276] In this embodiment, see Figures 5 to 10 As shown, the pre-charging component 10 includes a pre-charging relay 11, a pre-charging resistor 12 and a circuit board 13, the circuit board 13 includes a substrate 131 and a conductive circuit 132, and the conductive circuit 132 is installed on the substrate 131; the pre-charging relay 11 and the pre-charging resistor 12 are installed on the substrate 131, and the pre-charging relay 11 and the pre-charging resistor 12 are electrically connected through the conductive circuit 132.

[0277] In this embodiment, the substrate 131 is provided with a first connection hole 13101 and a second connection hole 13102, the pre-charging relay 11 includes a first body 111 and a first connection terminal 112 provided on the first body 111, the first connection terminal 112 passes through the first connection hole 13101 and is electrically connected to the conductive circuit 132; the pre-charging resistor 12 includes a second body 121 and a second connection terminal 122 provided on the second body 121, the second connection terminal 122 passes through the second connection hole 13102 and is electrically connected to the conductive circuit 132.

[0278] In this embodiment, the shape of the first connection hole 13101 is different from the shape of the second connection hole 13102 ; and / or, the size of the first connection hole 13101 is different from the size of the second connection hole 13102 .

[0279] In this embodiment, the first connection terminal 112 and the second connection terminal 122 are welded to the substrate 131 .

[0280] In this embodiment, the substrate 131 has a first pad 13103 and a second pad 13104 electrically connected to the conductive circuit 132 . The first pad 13103 is welded to the first connection terminal 112 , and the second pad 13104 is welded to the second connection terminal 122 .

[0281] In this embodiment, the substrate 131 has a first side and a second side that are opposite to each other, the first body 111 and the second body 121 are located on the first side, and the first pad 13103 and the second pad 13104 are located on the second side.

[0282] In this embodiment, the pre-filling component 10 also includes a high-voltage sampling component 14, which is installed on the substrate 131 and electrically connected to the conductive circuit 132 to collect the voltage difference of the pre-filling relay 11; the pre-filling component 10 also includes a first connector 15, which is installed on the substrate 131 and electrically connected to the conductive circuit 132 to control the on and off of the pre-filling relay 11.

[0283] In this embodiment, the substrate 131 is provided with a third connecting hole 13105 and a fourth connecting hole 13106, the high-voltage sampling component 14 includes a third main body 141 and a third connecting terminal 142 provided on the third main body 141, the third connecting terminal 142 is passed through the third connecting hole 13105 and is electrically connected to the conductive circuit 132; the first plug-in component 15 includes a fourth main body 151 and a fourth connecting terminal 152 provided on the fourth main body 151, the fourth connecting terminal 152 is passed through the fourth connecting hole 13106 and is electrically connected to the conductive circuit 132.

[0284] In this embodiment, the shape of the third connection hole 13105 is different from the shape of the fourth connection hole 13106 ; and / or, the size of the third connection hole 13105 is different from the size of the fourth connection hole 13106 .

[0285] In this embodiment, the third connection terminal 142 and the fourth connection terminal 152 are welded to the substrate 131 .

[0286] In this embodiment, the substrate 131 has a third pad 13107 and a fourth pad 13108 electrically connected to the conductive circuit 132 . The third pad 13107 is welded to the third connection terminal 142 , and the fourth connection terminal 152 is welded to the fourth pad 13108 .

[0287] In this embodiment, the substrate 131 has a first side and a second side that are opposite to each other; the third body 141 and the fourth body 151 are located on the first side, and the third pad 13107 and the fourth pad 13108 are located on the second side.

[0288] In this embodiment, the pre-charge component 10 further includes a first relay 16 and a fuse 17 . The first relay 16 and the fuse 17 are mounted on a substrate 131 . The first relay 16 and the fuse 17 are both electrically connected to the conductive line 132 .

[0289] In this embodiment, the first relay 16 includes a heating relay 16a; and / or the fuse 17 includes at least one of a heating fuse 17a and a DC-to-DC fuse 17b.

[0290] In this embodiment, the substrate 131 is provided with a fifth connection hole 13109 and a sixth connection hole 13110, the first relay 16 includes a fifth body 161 and a fifth connection terminal 162 provided on the fifth body 161, the fifth connection terminal 162 passes through the fifth connection hole 13109 and is electrically connected to the conductive circuit 132, the fuse 17 includes a sixth body 171 and a sixth connection terminal 172 provided on the sixth body 171, the sixth connection terminal 172 passes through the sixth connection hole 13110 and is electrically connected to the conductive circuit 132.

[0291] In this embodiment, the shape of the fifth connection hole 13109 is different from the shape of the sixth connection hole 13110 ; and / or, the size of the fifth connection hole 13109 is different from the size of the sixth connection hole 13110 .

[0292] In this embodiment, the fifth connection terminal 162 and the sixth connection terminal 172 are welded to the substrate 131 .

[0293] In this embodiment, the substrate 131 has a fifth pad 13111 and a sixth pad 13112 electrically connected to the conductive circuit 132 . The fifth pad 13111 is welded to the fifth connection terminal 162 , and the sixth connection terminal 172 is welded to the sixth pad 13112 .

[0294] In this embodiment, the substrate 131 has a first side and a second side that are opposite to each other; the fifth body 161 and the sixth body 171 are located on the first side, and the fifth pad 13111 and the sixth pad 13112 are located on the second side.

[0295] In this embodiment, in the width direction of the pre-charging resistor 12, the pre-charging relay 11 and the first relay 16 are located on the same side of the pre-charging resistor 12; the pre-charging relay 11 and the first relay 16 are arranged along the length direction of the pre-charging resistor 12; and / or, the fuse 17 is located on the side of the pre-charging resistor 12 along the width direction.

[0296] In this embodiment, at least one fuse 17 is located between the pre-charging resistor 12 and the pre-charging relay 11 , or at least one fuse 17 is located between the pre-charging resistor 12 and the first relay 16 .

[0297] In this embodiment, there are multiple fuses 17 , and the multiple fuses 17 are arranged along the length direction of the pre-charging resistor 12 .

[0298] In this embodiment, the pre-filled component 10 further includes a second connector, which is mounted on the substrate 131 . The second connector is electrically connected to the conductive circuit 132 to control the on / off of the first relay 16 .

[0299] See also Figure 5 and Figure 6 As shown, the pre-charging resistor 12 has a length direction, a width direction and a height direction. The height direction of the pre-charging resistor 12 can refer to the Z direction in the figure, the width direction of the pre-charging resistor 12 can refer to the Y direction in the figure, and the length direction of the pre-charging resistor 12 can refer to the X direction in the figure. The second body 121 defines the shape structure of the pre-charging resistor 12. The height direction of the second body 121 can be the height direction of the pre-charging resistor 12, the length direction of the second body 121 is the length direction of the pre-charging resistor 12, and the width direction of the second body 121 is the width direction of the pre-charging resistor 12.

[0300] The pre-filled relay 11 has a height direction, a length direction and a width direction. The height direction of the pre-filled relay 11 may be parallel to the Z direction, the width direction of the pre-filled relay 11 may be parallel to the X direction, and the length direction of the pre-filled relay 11 may be parallel to the X direction. The first body 111 defines the outer structure of the pre-filled relay 11. The height direction of the first body 111 may be the height direction of the pre-filled relay 11, the length direction of the first body 111 is the length direction of the pre-filled relay 11, and the width direction of the first body 111 is the width direction of the pre-filled relay 11.

[0301] The first relay 16 has a height direction, a length direction and a width direction. The height direction of the first relay 16 may be parallel to the Z direction, the width direction of the first relay 16 may be parallel to the X direction, and the length direction of the first relay 16 may be parallel to the X direction. The fifth body 161 defines the outer structure of the first relay 16. The height direction of the fifth body 161 may be the height direction of the first relay 16, the length direction of the fifth body 161 is the length direction of the first relay 16, and the width direction of the fifth body 161 is the width direction of the first relay 16. The first relay 16 is a heating relay 16a.

[0302] The fuse 17 has a height direction, a length direction and a width direction. The height direction of the fuse 17 may be parallel to the Z direction, the width direction of the fuse 17 may be parallel to the X direction, and the length direction of the fuse 17 may be parallel to the X direction. The sixth body 171 defines the outer structure of the fuse 17. The height direction of the sixth body 171 may be the height direction of the fuse 17, the length direction of the sixth body 171 is the length direction of the fuse 17, and the width direction of the sixth body 171 is the width direction of the fuse 17. There are two fuses 17, one of which is a heating fuse 17a, and the other is a DC-to-DC fuse 17b.

[0303] The pre-charging relay 11, the heating relay 16a, the heating fuse 17a and the DC-to-DC fuse 17b are located on one side of the width direction of the pre-charging resistor 12. The pre-charging relay 11 and the heating relay 16a are arranged along the length direction of the pre-charging resistor 12. The heating relay 16a is located between the pre-charging resistor 12 and the pre-charging relay 11, and the DC-to-DC fuse 17b is located between the pre-charging resistor 12 and the heating relay 16a.

[0304] Embodiment 2

[0305] The difference between this embodiment and the first embodiment is that: Figures 5 to 10 As shown, at least two of the high-voltage sampling component 14 , the first connector 15 , and the second connector are integrated to form a second integrated connector 18 .

[0306] In this embodiment, when the first connector 15 and the second connector are integrated to form the second integrated connector 18 , the high voltage sampling component 14 and the second integrated connector 18 are respectively located at opposite sides of the pre-charging resistor 12 along the length direction.

[0307] In this embodiment, when the first connector 15 and the second connector are integrated to form the second integrated connector 18, the substrate 131 is provided with a seventh connecting hole 13113, and the second connector includes a seventh body 181 and a seventh connecting terminal 182 provided on the seventh body 181, and the seventh connecting terminal 182 passes through the seventh connecting hole 13113 and is electrically connected to the conductive circuit 132.

[0308] In this embodiment, the seventh connection terminal 182 is welded to the substrate 131 .

[0309] In this embodiment, the substrate 131 has a seventh pad 13114 electrically connected to the conductive circuit 132 , and the seventh pad 13114 is welded to the seventh connection terminal 182 .

[0310] In this embodiment, the seventh body 181 is located on the first side, and the seventh pad 13114 is located on the second side.

[0311] In other embodiments of the present application, see Figure 1 and Figure 4 As shown, a main positive module 20 is provided, including a main positive relay 21 and a pre-charging component 10 as described in the above embodiment, the pre-charging relay 11 and the pre-charging resistor 12 are both connected in parallel with the main positive relay 21, and the pre-charging relay 11 and the pre-charging resistor 12 are connected in series.

[0312] In other embodiments of the present application, see Figure 1 and Figure 4 As shown, a power distribution device 100 is provided, comprising the main positive module 20 as described in the above embodiment.

[0313] In other embodiments of the present application, see Figure 3 As shown, a battery 1100 is provided, comprising the power distribution device 100 as described in the above embodiment.

[0314] In other embodiments of the present application, see Figure 1 and Figure 4 As shown, an electrical device is provided, comprising the power distribution device 100 as described in the above embodiment; and / or, comprising the battery 1100 as described in the above embodiment.

[0315] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0316] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A pre-filled component, characterized in that: It includes a pre-charging relay, a pre-charging resistor and a circuit board, wherein the circuit board includes a substrate and a conductive circuit, and the conductive circuit is installed on the substrate; The pre-charging relay and the pre-charging resistor are mounted on the substrate, and the pre-charging relay and the pre-charging resistor are electrically connected through the conductive line.

2. The pre-filled assembly according to claim 1, characterized in that: The substrate is provided with a first connection hole and a second connection hole, the pre-charging relay comprises a first body and a first connection terminal provided on the first body, the first connection terminal passes through the first connection hole and is electrically connected to the conductive line; The pre-charging resistor includes a second body and a second connecting terminal provided on the second body, wherein the second connecting terminal passes through the second connecting hole and is electrically connected to the conductive line.

3. The pre-filled assembly according to claim 2, characterized in that: The shape of the first connection hole is different from the shape of the second connection hole; and / or, the size of the first connection hole is different from the size of the second connection hole; and / or, the arrangement of the first connection holes is different from the arrangement of the second connection holes.

4. The pre-filled assembly according to claim 2, characterized in that: The first connection terminal and the second connection terminal are welded to the substrate.

5. The pre-filled assembly according to claim 4, characterized in that: The substrate has a first pad and a second pad electrically connected to the conductive circuit, the first pad is welded to the first connection terminal, and the second pad is welded to the second connection terminal.

6. The pre-filled assembly according to claim 5, characterized in that: The substrate has a first side and a second side that are opposite to each other, the first body and the second body are located on the first side, and the first pad and the second pad are located on the second side.

7. The pre-filled assembly according to any one of claims 1 to 6, characterized in that: The pre-filling assembly further includes a high-voltage sampling component, which is mounted on the substrate and electrically connected to the conductive circuit to collect the voltage difference of the pre-filling relay; The pre-charging component also includes a first connector, which is installed on the substrate and is electrically connected to the conductive circuit to control the on and off of the pre-charging relay.

8. The pre-filled assembly according to claim 7, characterized in that: The high-voltage sampling component and the first connector are integrated to form a first integrated connector.

9. The pre-filled assembly according to claim 7, characterized in that: The substrate is provided with a third connection hole and a fourth connection hole, the high-voltage sampling component comprises a third body and a third connection terminal provided on the third body, the third connection terminal is passed through the third connection hole and is electrically connected to the conductive circuit; The first plug connector includes a fourth body and a fourth connecting terminal disposed on the fourth body, and the fourth connecting terminal is passed through the fourth connecting hole and is electrically connected to the conductive circuit.

10. The pre-filled assembly according to claim 9, characterized in that: The shape of the third connection hole is different from the shape of the fourth connection hole; and / or, the size of the third connection hole is different from the size of the fourth connection hole; and / or, the arrangement of the third connection holes is different from the arrangement of the fourth connection holes.

11. The pre-filled assembly according to claim 9, characterized in that: The third connection terminal and the fourth connection terminal are welded to the substrate.

12. The pre-filled assembly according to claim 11, characterized in that: The substrate has a third pad and a fourth pad electrically connected to the conductive circuit, the third pad is welded to the third connection terminal, and the fourth connection terminal is welded to the fourth pad.

13. The pre-filled assembly according to claim 12, characterized in that: The substrate has a first side and a second side that are opposite to each other; the third body and the fourth body are located on the first side, and the third pad and the fourth pad are located on the second side.

14. The pre-filled assembly according to any one of claims 1 to 6, characterized in that: The pre-charged component also includes a first relay and a fuse, wherein the first relay and the fuse are mounted on the substrate, and the first relay and the fuse are both electrically connected to the conductive line.

15. The pre-filled assembly according to claim 14, characterized in that: The first relay includes a heating relay; and / or the fuse includes at least one of a heating fuse and a DC-to-DC fuse.

16. The pre-filled assembly according to claim 14, characterized in that: The substrate is provided with a fifth connection hole and a sixth connection hole, the first relay includes a fifth body and a fifth connection terminal provided on the fifth body, the fifth connection terminal passes through the fifth connection hole and is electrically connected to the conductive circuit, the fuse includes a sixth body and a sixth connection terminal provided on the sixth body, the sixth connection terminal passes through the sixth connection hole and is electrically connected to the conductive circuit.

17. The prefilled assembly according to claim 16, characterized in that: The shape of the fifth connection hole is different from the shape of the sixth connection hole; and / or, the size of the fifth connection hole is different from the size of the sixth connection hole; and / or, the arrangement of the fifth connection holes is different from the arrangement of the sixth connection holes.

18. The prefilled assembly according to claim 16, characterized in that: The fifth connection terminal and the sixth connection terminal are welded to the substrate.

19. The prefilled assembly according to claim 18, characterized in that: The substrate has a fifth pad and a sixth pad electrically connected to the conductive circuit, the fifth pad is welded to the fifth connection terminal, and the sixth connection terminal is welded to the sixth pad.

20. The prefilled assembly according to claim 19, characterized in that: The substrate has a first side and a second side that are opposite to each other; the fifth body and the sixth body are located on the first side, and the fifth pad and the sixth pad are located on the second side.

21. The prefilled assembly according to claim 14, characterized in that: In the width direction of the pre-charging resistor, the pre-charging relay and the first relay are located on the same side of the pre-charging resistor; the pre-charging relay and the first relay are arranged along the length direction of the pre-charging resistor; and / or the fuse is located on the side of the pre-charging resistor along the width direction.

22. The prefilled assembly according to claim 21, characterized in that: At least one of the fuses is located between the pre-charging resistor and the pre-charging relay, or at least one of the fuses is located between the pre-charging resistor and the first relay; or at least one of the fuses is located on the side of the pre-charging relay facing away from the pre-charging resistor; or at least one of the fuses is located on the side of the first relay facing away from the pre-charging resistor; or the fuse is located on the side of the pre-charging resistor facing away from the pre-charging relay.

23. The prefilled assembly according to claim 21, characterized in that: There are multiple fuses, and the multiple fuses are arranged along the length direction of the pre-charging resistor.

24. The prefilled assembly according to claim 14, characterized in that: The pre-filled component also includes a second connector, which is installed on the substrate and is electrically connected to the conductive circuit to control the on and off of the first relay.

25. The prefilled assembly according to claim 24, characterized in that: The pre-filling assembly further includes a high-voltage sampling component, which is mounted on the substrate and electrically connected to the conductive circuit to collect the voltage difference of the pre-filling relay; The pre-charging assembly further includes a first connector, which is mounted on the substrate and is electrically connected to the conductive circuit to control the on / off of the pre-charging relay; At least two of the high-voltage sampling component, the first connector, and the second connector are integrated to form a second integrated connector.

26. The prefilled assembly according to claim 25, characterized in that: In the case where the first connector and the second connector are integrated to form the second integrated connector, the high voltage sampling component and the second integrated connector are respectively located at two opposite sides of the pre-charging resistor along the length direction.

27. The prefilled assembly according to claim 26, characterized in that: When the first connector and the second connector are integrated to form the second integrated connector, the substrate is provided with a seventh connecting hole, the second connector includes a seventh body and a seventh connecting terminal provided on the seventh body, and the seventh connecting terminal passes through the seventh connecting hole and is electrically connected to the conductive circuit.

28. The prefilled assembly according to claim 27, characterized in that: The seventh connection terminal is welded to the substrate.

29. The prefilled assembly according to claim 28, characterized in that: The substrate has a seventh pad electrically connected to the conductive circuit, and the seventh pad is welded to the seventh connection terminal.

30. The prefilled assembly according to claim 29, characterized in that: The substrate has a first side and a second side that are opposite to each other; the seventh body is located on the first side, and the seventh pad is located on the second side.

31. A main positive module, characterized in that: It comprises a main positive relay and a pre-charging component as described in any one of claims 1 to 30, wherein the pre-charging relay is connected in parallel with the main positive relay, and the pre-charging relay and the pre-charging resistor are connected in series.

32. A power distribution device, characterized in that: Comprising the main positive module as claimed in claim 31.

33. A battery, characterized in that: Includes the power distribution device as described in claim 32.

34. An electrical equipment, characterized in that: Includes the distribution device described in claim 32; and / or, includes the battery described in claim 33.

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