Voltage transformation module and battery charging and discharging equipment

Abstract

The embodiment of the utility model discloses a voltage transformation module and battery charging and discharging equipment, and the voltage transformation module comprises a first circuit board which is used for connecting external power supply equipment; the second circuit board and the first circuit board are arranged at intervals in the first direction, the first direction is the thickness direction of the second circuit board, the voltage of the second circuit board is lower than that of the first circuit board, and the second circuit board is used for supplying power to the probe assembly; the transformer is arranged on the second circuit board and electrically connected with the second circuit board, and the transformer is electrically connected with the first circuit board; the connecting circuit board comprises a first edge and a second edge which are oppositely arranged, the first edge is connected to the first circuit board, and the second edge is connected to the second circuit board, so that the first circuit board and the second circuit board are supported in the first direction, and the first circuit board is electrically connected with the second circuit board. The voltage transformation module disclosed by the utility model solves the problem that the voltage transformation module in the prior art occupies a large space.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a transformer module and a battery charging and discharging device. Background Technology

[0002] In the production process of prismatic power batteries, the industry has proposed a 700V DC bus technology solution, which first steps down the 700V to 400V, and then steps down the 400V to 5V for output. This solution effectively reduces line losses and heat generation by increasing the bus voltage and reducing the transmission current, thereby improving equipment energy efficiency.

[0003] However, this high-voltage solution requires a transformer to achieve high- and low-voltage isolation between the primary and secondary sides, which poses new challenges to the circuit board layout. Especially when applied to production equipment for prismatic cells with left and right tabs on opposite sides, existing circuit board layouts generally use a flat component arrangement, resulting in a significant increase in the vertical height of the circuit board. This increase in the overall height of the battery charging and discharging equipment not only increases the space occupied by the production line but also restricts the ceiling height design and production line layout of the customer's factory, making it difficult to meet the compact requirements of modern battery factories. Utility Model Content

[0004] This application discloses a transformer module and a battery charging and discharging device, which can stack the primary and secondary sides, solving the problem of large space occupation of transformer modules in the prior art.

[0005] To achieve the above objectives, embodiments of this application provide a transformer module and a battery charging and discharging device, comprising:

[0006] A first circuit board, the first circuit board being used to connect an external power supply device;

[0007] The second circuit board and the first circuit board are arranged at intervals along a first direction, the first direction being the thickness direction of the second circuit board. The voltage of the second circuit board is lower than that of the first circuit board. The second circuit board is used to supply power to the probe assembly.

[0008] A transformer is disposed on and electrically connected to the second circuit board, and the transformer is also electrically connected to the first circuit board;

[0009] A connecting circuit board is electrically connected to the first circuit board and the second circuit board respectively. The connecting circuit board includes a first edge and a second edge disposed opposite to each other. The first edge is connected to the first circuit board, and the second edge is connected to the second circuit board to support the first circuit board and the second circuit board in the first direction.

[0010] As an optional implementation, the connecting circuit board is arranged perpendicularly to the first circuit board and the connecting circuit board is arranged perpendicularly to the second circuit board.

[0011] As an optional implementation, the second circuit board includes a third edge and a fourth edge disposed opposite to each other along a second direction, the second direction being the thickness direction of the connecting circuit board, and the connecting circuit board being equidistant from the third edge and the fourth edge.

[0012] As an optional implementation, the second circuit board includes a first circuit and a second circuit, wherein the first circuit is disposed between the connecting circuit board and the first edge, and the second circuit is disposed between the connecting circuit board and the second edge, so that the connecting circuit board isolates the first circuit and the second circuit.

[0013] As an optional implementation, the first circuit board includes a first mounting hole, the second circuit board includes a second mounting hole, and the transformer module further includes: a first connecting component disposed between a first edge of the first circuit board and the connecting circuit board, and the first connecting component can pass through the first mounting hole in the first direction to electrically connect the first circuit board and the connecting circuit board; and a second connecting component disposed between a second end of the second circuit board and the connecting circuit board, and the second connecting component can pass through the second mounting hole in the first direction to electrically connect the second circuit board and the connecting circuit board.

[0014] As an optional implementation, the first connection component includes: a female connector disposed in the first mounting hole and electrically connected to the first circuit board; and a pin header disposed at the first end of the connection circuit board and electrically connected to the connection circuit board, wherein the pin header can be inserted into the female connector to make the pin header electrically connected to the female connector.

[0015] As an optional implementation, the transformer module further includes a connector, the first end of which is connected to the edge of the second circuit board, and the second end of which is connected to the edge of the first circuit board, to restrict the first circuit board and the second circuit board from moving closer to or further away from each other along the first direction.

[0016] In one optional implementation, the connector includes a first snap-fit ​​groove disposed at a first end of the connector, and the second circuit board includes a first snap-fit ​​portion that engages with the first snap-fit ​​groove to limit the movement of the second circuit board along the first direction; the connector also includes a second snap-fit ​​groove disposed at a second end of the connector, and the first circuit board includes a second snap-fit ​​portion that engages with the second snap-fit ​​groove to limit the movement of the first circuit board along the first direction.

[0017] As an optional implementation, the number of connectors is multiple, and the multiple connectors are arranged at intervals around the second circuit board.

[0018] As an optional implementation, the transformer is electrically connected to the first circuit board via conductive leads.

[0019] A second aspect of this application discloses a battery charging and discharging device, comprising: a probe assembly; a transformer module, wherein the second circuit board of the transformer module is electrically connected to the probe assembly.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The transformer module provided in this application embodiment uses a first circuit board and a second circuit board arranged at intervals along a first direction. A connecting circuit board supports the first and second circuit boards in a H-shaped structure along the first direction, enabling electrical connection. This makes the entire transformer module more compact. Compared to traditional flat layouts, the H-shaped structure integrates transformer functionality and corresponding circuit connections within a limited space, thereby reducing the space required for the transformer module, miniaturizing it, and effectively improving the space utilization rate inside the battery charging and discharging equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is one of the structural schematic diagrams of the transformer module provided in the embodiments of this application;

[0024] Figure 2 This is the second schematic diagram of the structure of the transformer module provided in the embodiments of this application;

[0025] Figure 3This is the third schematic diagram of the structure of the transformer module provided in the embodiments of this application;

[0026] Figure 4 This is the fourth schematic diagram of the structure of the transformer module provided in the embodiments of this application;

[0027] Figure 5 This is a schematic diagram of the structure of the first circuit board provided in an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the structure of the second circuit board provided in an embodiment of this application;

[0029] Figure 7 This is a schematic diagram of the connector provided in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100 - Transformer module; 200 - Battery charging and discharging equipment; 1 - First circuit board; 11 - Second snap-fit ​​part; 2 - Second circuit board; 21 - Third edge; 22 - Fourth edge; 23 - First snap-fit ​​part; 3 - Connecting circuit board; 31 - First edge; 32 - Second edge; 41 - First connecting component; 42 - Second connecting component; 5 - Connector; 51 - First snap-fit ​​slot; 52 - Second snap-fit ​​slot; 53 - Third snap-fit ​​slot; 54 - Fourth snap-fit ​​slot; 6 - Transformer; 61 - Conductive lead. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In this application, the terms "upper," "lower," "top," "bottom," "inner," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0034] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0035] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0036] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0037] In the production of prismatic batteries, the traditional power conversion scheme typically converts 380V AC to 15V DC, and then further converts the 15V DC to 5V DC for battery charging. However, due to the high power requirements in the production of prismatic batteries, this traditional scheme has significant drawbacks. The large current on the 15V DC bus leads to a significant increase in heat loss, severely impacting the efficiency of battery charging and discharging equipment.

[0038] To address the issue of excessive losses on the 15V DC bus in traditional solutions, the industry has gradually introduced 700V high-voltage DC bus solutions. This solution reduces heat loss during current transmission and improves equipment efficiency by stepping the 700V high-voltage DC to 400V, and then further stepping the 400V to a low voltage of 5V for battery charging. However, due to the significant voltage difference between the 700V high voltage and the 5V low voltage used for battery charging, a transformer must be used for primary-secondary isolation to ensure safety and electrical isolation.

[0039] Currently, the aforementioned high-voltage DC bus solution is mainly used in the production of prismatic battery cells. Prismatic cells employ a left-right tab design, with the positive and negative electrodes arranged on opposite sides. This structure places high demands on the electrical layout of the production equipment. In existing circuit board layouts, transformer modules are typically designed by laying the primary and secondary sides flat. However, this flat circuit board layout significantly increases the board height, thus affecting the overall height of the battery charging and discharging equipment. Excessively tall battery charging and discharging equipment not only occupies a large space but also causes numerous inconveniences for the customer's factory design.

[0040] To address the aforementioned issues, the inventors investigated the limitations of existing transformer module layouts and improved upon them. They designed a transformer module structure that allows for the stacking of primary and secondary sides and the use of I-beam supports, thus preventing the transformer module from occupying too much space and achieving the goal of reducing the space occupied by battery charging and discharging equipment.

[0041] Based on this, this application discloses a transformer module and a battery charging and discharging device, which solves the problem that the battery charging and discharging device occupies a large space due to the large area of ​​the transformer module.

[0042] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0043] Please see Figure 1 and Figure 2 , Figure 1 This is one of the structural schematic diagrams of the transformer module 100 provided in the embodiments of this application. Figure 2 This is a second schematic diagram of the structure of the transformer module 100 provided in this application embodiment. The transformer module 100 provided in this application embodiment includes: a first circuit board 1, which is used to connect to an external power supply device; a second circuit board 2, which is arranged at intervals with the first circuit board 1 along a first direction, the first direction being the thickness direction of the second circuit board 2, the voltage of the second circuit board 2 being lower than the voltage of the first circuit board 1, and the second circuit board 2 being used to supply power to a probe assembly; a transformer 6, which is disposed on the second circuit board 2 and electrically connected to the second circuit board 2, and the transformer 6 is also electrically connected to the first circuit board 1; and a connecting circuit board 3, which is electrically connected to the first circuit board 1 and the second circuit board 2 respectively, the connecting circuit board 3 including a first edge 31 and a second edge 32 disposed opposite to each other, the first edge 31 being connected to the first circuit board 1, and the second edge 32 being connected to the second circuit board 2, so as to support the first circuit board 1 and the second circuit board 2 in the first direction.

[0044] It is understood that a circuit board typically has a length direction, a width direction, and a height direction. The length direction is the direction in which the long side of the second circuit board 2 extends, the width direction is the direction in which the short side of the second circuit board 2 extends, and the height direction is the thickness direction of the circuit board. For ease of description, in this embodiment, the thickness direction of the second circuit board 2 is referred to as the first direction, and the thickness direction of the connecting circuit board 3 is referred to as the second direction.

[0045] For example, the second direction intersects the first direction. In some examples, the second direction and the first direction can be perpendicular or approximately perpendicular. Understandably, the second direction and the first direction can be "approximately perpendicular," that is, the angle between the second direction and the first direction can be approximately 90°, such as 88°, 89°, 91°, or 92°, etc.

[0046] The first circuit board 1 serves as the power input port of the entire transformer module 100, enabling it to be easily connected to external power supply equipment. This ensures that the transformer module 100 can obtain the required power input, providing basic energy support for subsequent transformer operations and power supply to the probe components, thus enabling the entire system to start and operate normally.

[0047] The second circuit board 2 and the first circuit board 1 are arranged at intervals along the first direction. The voltage of the second circuit board 2 is lower than that of the first circuit board 1. This arrangement is conducive to the reasonable arrangement of circuits of different voltage levels in the limited space inside the battery charging and discharging device, avoiding problems such as insufficient electrical clearance leading to voltage breakdown caused by the high voltage and low voltage parts being too close together. At the same time, because the second circuit board 2 and the first circuit board 1 are separated, the heat can be dispersed to a certain extent, which facilitates heat dissipation design and reduces the risk of local overheating.

[0048] Meanwhile, the voltage of the second circuit board 2 is lower than that of the first circuit board 1, which can provide a suitable low voltage power supply to the battery, meet the voltage requirements for battery charging and discharging, ensure that the battery charging and discharging process can operate stably and safely, and avoid damage to the battery due to excessive voltage.

[0049] The transformer module 100 also includes a transformer 6, which is disposed on and electrically connected to the second circuit board 2, and is also electrically connected to the first circuit board 1. The transformer 6 can convert the higher voltage input to the first circuit board 1 into a lower voltage suitable for battery charging and discharging, meeting the different voltage requirements of different parts, ensuring that all components in the battery charging and discharging equipment can operate stably under appropriate voltage, and improving the energy utilization efficiency and overall system performance.

[0050] Meanwhile, the transformer 6 achieves electrical isolation between the first circuit board 1 and the second circuit board 2, reduces electromagnetic interference from the high-voltage part to the low-voltage part, improves the stability and reliability of the current, provides a better working environment for the probe assembly, and helps to improve the stability of battery charging and discharging.

[0051] The connecting circuit board 3 includes a first edge 31 and a second edge 32 disposed opposite to each other. The first edge 31 is connected to the first circuit board 1, and the second edge 32 is connected to the second circuit board 2, so as to support the first circuit board 1 and the second circuit board 2 in a first direction and electrically connect the first circuit board 1 and the second circuit board 2. The connecting circuit board 3 realizes the electrical connection with the first circuit board 1 and the electrical connection with the second circuit board 2, ensuring that the control electrical signals can be smoothly transmitted to the first circuit board 1 and the second circuit board 2.

[0052] It is understood that the connecting circuit board 3, the first circuit board 1, and the second circuit board 2 form an "I"-shaped structure. This allows the connecting circuit board 3 to support the first circuit board 1 and the second circuit board 2 in the first direction, making the structure of the entire transformer module 100 more stable. This avoids problems such as poor electrical connection or component damage caused by unstable relative positions between the first circuit board 1 and the second circuit board 2, thereby improving the mechanical stability and service life of the transformer module 100.

[0053] Thus, the transformer module 100 provided in this embodiment of the application uses a first circuit board 1 and a second circuit board 2 arranged at intervals along a first direction, and utilizes a connecting circuit board 3 to support the first circuit board 1 and the second circuit board 2 in the first direction and to achieve electrical connection in an I-shaped structure, making the entire transformer module 100 structure more compact. Compared with the traditional flat layout, the I-shaped structure can integrate the transformer function and the corresponding circuit connection in a limited space, thereby reducing the space occupied by the transformer module 100, realizing the miniaturization of the transformer module 100, and effectively improving the space utilization rate inside the battery charging and discharging device.

[0054] Please see Figure 1 In some embodiments, the connecting circuit board 3 is perpendicular to the first circuit board 1, and the connecting circuit board 3 is perpendicular to the second circuit board 2. This I-shaped structure allows for a more rational distribution of the first circuit board 1 and the second circuit board 2 in three-dimensional space, making full use of the internal space of the battery charging and discharging device. Compared with the traditional flat arrangement, the I-shaped structure can expand the space upward or downward on the basis of limited planar space, making the entire transformer module 100 more compact in overall volume and improving the miniaturization of the battery charging and discharging device.

[0055] Meanwhile, the vertically positioned connecting circuit board 3, compared to connecting circuit boards 3 positioned at other angles, can better resist the impact and vibration of external forces, forming a stable support frame. During the operation of the transformer module 100, it may be subject to external forces from different directions, such as the movement or collision of battery charging and discharging equipment, or vibrations in the working environment. The vertically positioned connecting circuit board 3 can distribute external forces to the first circuit board 1, the second circuit board 2, and the connection points, reducing the risk of structural deformation or damage caused by excessive local stress, and improving the mechanical stability of the entire transformer module 100.

[0056] Please see Figure 3 , Figure 3The third schematic diagram of the structure of the transformer module 100 provided in the embodiments of this application shows that in some embodiments, the second circuit board 2 includes a third edge 21 and a fourth edge 22 disposed opposite to each other along a second direction. The second direction is the thickness direction of the connecting circuit board 3, and the distance between the connecting circuit board 3 and the third edge 21 and the fourth edge 22 is equal.

[0057] It is understood that the distances between the connecting circuit board 3 and the third edge 21 and the fourth edge 22 are equal. The connecting circuit board 3 provides uniform support points in the thickness direction of the second circuit board 2, making the supporting force on the second circuit board 2 more uniform in the first direction. During the operation of the battery charging and discharging equipment, the second circuit board 2 may be subjected to external forces from different directions, such as vibration and collision of the battery charging and discharging equipment. Since the distances between the connecting circuit board 3 and the third edge 21 and the fourth edge 22 are equal, the force on the second circuit board 2 in the first direction can be evenly distributed, avoiding bending, deformation or damage to the first circuit board 1 and the second circuit board 2 due to uneven force, and improving the structural stability of the entire transformer module 100.

[0058] Furthermore, the equidistant distances of the connecting circuit board 3 from the third edge 21 and the fourth edge 22 facilitate uniform heat dissipation. During the operation of the battery charging and discharging equipment, the second circuit board 2 generates heat. The uniform support of the connecting circuit board 3 ensures that the heat is evenly distributed in the second direction, preventing localized heat accumulation. This helps improve heat dissipation efficiency, reduce the temperature of the circuit board, thereby extending the lifespan of the components on the second circuit board 2, improving the stability and reliability of the entire transformer module 100, and ensuring the heat dissipation performance of the battery power supply.

[0059] Please see Figure 1 and Figure 2 In some embodiments, the second circuit board 2 includes a first circuit and a second circuit. The first circuit is disposed between the connecting circuit board 3 and the first edge 31, and the second circuit is disposed between the connecting circuit board 3 and the second edge 32, so that the connecting circuit board 3 isolates the first circuit and the second circuit.

[0060] It is understood that by setting the first circuit and the second circuit between the connecting circuit board 3 and the first edge 31 and the second edge 32 respectively, and using the connecting circuit board 3 for isolation, signal interference and crosstalk between the first circuit and the second circuit can be prevented.

[0061] Furthermore, isolating the first and second circuits improves system safety. In battery-powered systems, abnormal situations may occur, such as a circuit failure or overcurrent / overvoltage. Isolating the first and second circuits via circuit board 3 prevents the propagation of faults between them, avoiding the failure of the entire transformer module 100 or a safety accident due to a single circuit failure. This isolation design effectively protects the battery and other critical components, ensuring the safe operation of the transformer module 100.

[0062] Optionally, the first circuit and the second circuit can be responsible for different functions. For example, the first circuit is responsible for battery charging management, and the second circuit is responsible for battery status monitoring.

[0063] Please see Figure 1 and Figure 2 In some embodiments, the first circuit board 1 includes a first mounting hole, the second circuit board 2 includes a second mounting hole, and the transformer module 100 further includes: a first connecting component 41, which is disposed between the first edge 31 of the first circuit board 1 and the connecting circuit board 3, and the first connecting component 41 can pass through the first mounting hole in a first direction to electrically connect the first circuit board 1 and the connecting circuit board 3; and a second connecting component 42, which is disposed between the second end of the second circuit board 2 and the connecting circuit board 3, and the second connecting component 42 can pass through the second mounting hole in a first direction to electrically connect the second circuit board 2 and the connecting circuit board 3.

[0064] Specifically, by using the first connecting component 41 and the second connecting component 42, along with the design of the mounting holes, the reliability of the connection between the first circuit board 1, the second circuit board 2, and the connecting circuit board 3 can be improved. The first and second mounting holes provide accurate positioning and fixing points for the first connecting component 41 and the second connecting component 42, enabling them to be precisely aligned and fixed in their respective positions during installation, avoiding problems such as poor contact and loosening caused by unstable connections. This reliable connection method can effectively reduce connection resistance, reduce power loss during power transmission, improve the power transmission efficiency of the entire transformer module 100, and ensure the stability and reliability of battery power supply.

[0065] Meanwhile, the design of the first connecting component 41 and the second connecting component 42 makes the installation of the transformer module 100 more convenient. During assembly, simply passing the connecting components through the corresponding mounting holes and connecting them to the connecting circuit board 3 achieves electrical connection between the first circuit board 1, the second circuit board 2, and the connecting circuit board 3. This installation method is simple and quick, reducing assembly difficulty and time costs, and improving production efficiency.

[0066] Similarly, thanks to the design of the connecting components and mounting holes, the corresponding circuit board can be easily removed from the connecting circuit board 3 for inspection, repair, or replacement. This not only saves maintenance time and reduces maintenance costs, but also improves the maintainability and reliability of the entire system, ensuring the stability and normal operation of the battery charging and discharging equipment during long-term operation.

[0067] Furthermore, the first connecting component 41 and the second connecting component 42 not only achieve electrical connection but also enhance the structural stability between the first circuit board 1, the second circuit board 2, and the connecting circuit board 3. After passing through the mounting holes, the connecting components tightly connect the first circuit board 1, the second circuit board 2, and the connecting circuit board 3 together, forming an integral structure. This stable connection structure effectively reduces the relative displacement and shaking between the circuit boards, lowers the risk of loose connections and solder joint cracking caused by external forces, improves the mechanical stability and reliability of the entire transformer module 100, and ensures the stability and safety of battery power supply.

[0068] Please see Figure 1 and Figure 2 In some embodiments, the first connecting component 41 includes: a female connector, which is disposed in a first mounting hole and electrically connected to the first circuit board 1; and a pin connector, which is disposed at the first end of the connecting circuit board 3 and electrically connected to the connecting circuit board 3. The pin connector can be inserted and engaged with the female connector to make the pin connector electrically connected to the female connector.

[0069] It is understood that the female connector is located in the first mounting hole and electrically connected to the first circuit board 1, while the male connector is located at the first end of the connecting circuit board 3 and electrically connected to the connecting circuit board 3. The male connector can be plugged into the female connector to achieve electrical connection between them. This plugging connection method provides a reliable electrical connection, ensuring stable signal transmission between the first circuit board 1 and the connecting circuit board 3. This provides a stable signal transmission channel for the normal operation of the transformer module 100, ensuring the continuity and stability of the control signal.

[0070] Meanwhile, the design of the female and pin headers facilitates multi-point connections. Female headers typically have multiple pins, which can be plugged into the pin headers one-to-one, enabling simultaneous connections between multiple circuit nodes. This multi-point connection method can meet the connection requirements of multiple control signals in complex circuits, ensuring coordinated operation between various circuit components, improving the functionality and reliability of the entire transformer module 100, and providing strong support for the stable operation of the battery-powered system.

[0071] Furthermore, the plug-in design of the female and male connectors simplifies the installation process. When assembling the transformer module 100, electrical connection can be achieved simply by aligning the male connector with the female connector's socket, eliminating the need for complex soldering or other connection processes. This simple installation method not only improves assembly efficiency, reduces assembly difficulty and time costs, but also reduces connection problems caused by improper installation, improving product quality and reliability, and facilitating large-scale production and rapid assembly.

[0072] Similarly, the design of the header and pin header makes maintenance or replacement of the first circuit board 1 or the connecting circuit board 3 much easier. Simply pull the pin header out of the header nut to easily remove the corresponding circuit board for inspection, repair, or replacement. This convenient maintenance method not only saves maintenance time and reduces maintenance costs, but also improves the maintainability and reliability of the entire system, ensuring the stability and normal operation of the battery charging and discharging equipment during long-term operation and extending its service life.

[0073] It should be noted that the first connecting component 41 and the second connecting component 42 may have the same structure and working principle. This article mainly describes and introduces the first connecting component 41, and will not elaborate on the structure and working principle of the second connecting component 42.

[0074] Please see Figure 4 , Figure 4 The fourth schematic diagram of the structure of the transformer module 100 provided in the embodiments of this application shows that in some embodiments, the transformer module 100 further includes: a connector 5, the first end of the connector 5 is connected to the edge of the second circuit board 2, and the second end of the connector 5 is connected to the edge of the first circuit board 1, so as to limit the first circuit board 1 and the second circuit board 2 from moving closer to each other or further away from each other along the first direction.

[0075] It is understood that connector 5 connects the first circuit board 1 and the second circuit board 2 together, restricting the relative movement of the first circuit board 1 and the second circuit board 2 along the first direction, thereby effectively preventing displacement between the first circuit board 1 and the second circuit board 2. During the operation of the battery charging and discharging equipment, it may be affected by external forces such as vibration and impact. Without the constraint of connector 5, the first circuit board 1 and the second circuit board 2 may experience relative displacement, leading to loosening or disconnection of the electrical connection, affecting the normal operation of the transformer module 100. The presence of connector 5 keeps the relative position between the circuit boards stable, improving the mechanical stability of the entire transformer module 100.

[0076] Meanwhile, the use of connector 5 simplifies the structural design of transformer module 100. Connecting the circuit boards together via connector 5 eliminates the need for complex support structures or additional fixing components, resulting in a simpler overall structure for transformer module 100. This simplified design not only reduces manufacturing costs but also improves assembly efficiency, facilitating mass production and maintenance.

[0077] Optionally, the connector 5 may be a connecting plate, a connecting rod, a connecting bolt, or a snap-fit ​​connector 5, etc., and this application embodiment does not limit this.

[0078] Please see Figure 5 , Figure 6 and Figure 7 , Figure 5 This is a schematic diagram of the structure of the first circuit board 1 provided in an embodiment of this application. Figure 6 This is a schematic diagram of the structure of the second circuit board 2 provided in an embodiment of this application. Figure 7 The diagram below illustrates the structure of the connector 5 provided in an embodiment of this application. In some embodiments, the connector 5 includes a first snap-fit ​​groove 51 disposed at a first end of the connector 5. The second circuit board 2 includes a first snap-fit ​​portion 23, which engages with the first snap-fit ​​groove 51 to limit the movement of the second circuit board 2 along a first direction. The connector 5 also includes a second snap-fit ​​groove 52 disposed at a second end of the connector 5. The first circuit board 1 includes a second snap-fit ​​portion 11, which engages with the second snap-fit ​​groove 52 to limit the movement of the first circuit board 1 along a first direction.

[0079] Specifically, the limiting engagement between the first latching portion 23 and the first latching slot 51, and between the second latching portion 11 and the second latching slot 52, effectively restricts the movement of the second circuit board 2 and the first circuit board 1 along the first direction. This limiting design ensures that the circuit boards maintain a stable position during operation, preventing relative displacement between the first circuit board 1 and the second circuit board 2 due to external forces, thereby improving the structural stability of the entire transformer module 100 and ensuring the reliability of the electrical connection.

[0080] The snap-fit ​​design makes the installation process simpler and faster. When assembling the transformer module 100, simply align the first snap-fit ​​part 23 of the second circuit board 2 with the first snap-fit ​​slot 51 of the connector 5, and align the second snap-fit ​​part 11 of the first circuit board 1 with the second snap-fit ​​slot 52 of the connector 5, then gently insert it to achieve a locking fit, without the need for complicated tools and equipment. This simple installation method not only improves assembly efficiency, reduces assembly difficulty and time costs, but also reduces connection problems caused by improper installation, thereby improving product quality and reliability.

[0081] Similarly, the snap-fit ​​design provides convenience when maintenance or replacement of circuit boards is required. Simply pull the snap-fit ​​part out of the snap-fit ​​slot to easily remove the corresponding circuit board for inspection, repair, or replacement. This convenient maintenance method not only saves maintenance time and reduces maintenance costs, but also improves the maintainability and reliability of the entire system, ensuring the stability and normal operation of the battery charging and discharging equipment during long-term operation.

[0082] Optionally, along the width direction of the connector 5, the connector 5 may be provided with a third slot 53 opposite to the first slot 51 and a fourth slot 54 opposite to the second slot 52, so as to enhance the structural stability of the connector 5 and ensure the stable support of the connector 5 for the first circuit board 1 and the second circuit board 2.

[0083] Please see Figure 1 In some embodiments, there are multiple connectors 5, which are arranged at intervals around the second circuit board 2.

[0084] It is understandable that the multiple connectors 5 arranged at intervals around the second circuit board 2 can evenly distribute the connection force along the edge of the circuit board. This evenly distributed connection force can effectively prevent local deformation or stress concentration of the first circuit board 1 and the second circuit board 2 under stress, thereby improving the structural stability of the entire transformer module 100. For example, when the equipment is subjected to vibration or impact, the multiple connectors 5 can share the external force, reducing the pressure on individual connectors 5 and lowering the risk of damage to the connectors 5.

[0085] Furthermore, the spaced arrangement of multiple connectors 5 provides greater flexibility in the design and layout of the first circuit board 1 and the second circuit board 2. Designers can adjust the position and number of connectors 5 according to actual needs to achieve optimal connection effect and space utilization. For example, the number of connectors 5 can be increased at key locations on the first circuit board 1 and the second circuit board 2 to improve the connection strength and stability at these locations, while the number of connectors 5 can be reduced at other locations to save space and cost.

[0086] Please see Figure 1 In some embodiments, the transformer 6 is electrically connected to the first circuit board 1 via conductive leads 61. The use of conductive leads 61 makes the connection between the transformer 6 and the first circuit board 1 more flexible and convenient. During installation, only one end of the conductive lead 61 needs to be connected to the corresponding terminal of the transformer 6, and the other end needs to be connected to the corresponding pad of the first circuit board 1. No complicated alignment and fixing operations are required, which simplifies the installation steps and improves installation efficiency.

[0087] Optionally, the conductive lead 61 can be made of a material with good conductivity, such as copper or aluminum wire, to provide a stable electrical connection. By soldering the conductive lead 61 to the corresponding connection points of the transformer 6 and the first circuit board 1 or by other reliable connection methods, stable power transmission between the transformer 6 and the first circuit board 1 can be ensured, reducing electrical connection problems caused by poor contact.

[0088] Furthermore, the use of conductive leads 61 makes the connection between the transformer 6 and the first circuit board 1 more flexible and not subject to strict geometric constraints. Based on the overall layout and space constraints of the transformer module 100, the relative positions of the transformer 6 and the first circuit board 1 can be freely selected and connected via conductive leads 61, thereby achieving better space utilization.

[0089] This application discloses a battery charging and discharging device including: a probe assembly; a transformer module 100, wherein a second circuit board 2 of the transformer module 100 is electrically connected to the probe assembly. Since the battery charging and discharging device provided in this application includes the transformer module 100 provided in the first aspect of this application, the battery charging and discharging device has the beneficial effects of any of the aforementioned transformer modules 100, which will not be elaborated further here.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A transformer module, characterized in that, include: A first circuit board, the first circuit board being used to connect an external power supply device; The second circuit board and the first circuit board are arranged at intervals along a first direction, the first direction being the thickness direction of the second circuit board. The voltage of the second circuit board is lower than that of the first circuit board. The second circuit board is used to supply power to the probe assembly. A transformer is disposed on and electrically connected to the second circuit board, and the transformer is also electrically connected to the first circuit board; A connecting circuit board is electrically connected to the first circuit board and the second circuit board respectively. The connecting circuit board includes a first edge and a second edge disposed opposite to each other. The first edge is connected to the first circuit board, and the second edge is connected to the second circuit board to support the first circuit board and the second circuit board in the first direction.

2. The transformer module according to claim 1, characterized in that, The connecting circuit board is perpendicular to the first circuit board, and the connecting circuit board is perpendicular to the second circuit board.

3. The transformer module according to claim 2, characterized in that, The second circuit board includes a third edge and a fourth edge disposed opposite to each other along a second direction, the second direction being the thickness direction of the connecting circuit board, and the connecting circuit board being equidistant from the third edge and the fourth edge.

4. The transformer module according to claim 3, characterized in that, The second circuit board includes a first circuit and a second circuit. The first circuit is disposed between the connecting circuit board and the first edge, and the second circuit is disposed between the connecting circuit board and the second edge, so that the connecting circuit board isolates the first circuit and the second circuit.

5. The transformer module according to claim 1, characterized in that, The first circuit board includes a first mounting hole, the second circuit board includes a second mounting hole, and the transformer module further includes: A first connecting component is disposed between the first edge of the first circuit board and the connecting circuit board, and the first connecting component can pass through the first mounting hole in the first direction to electrically connect the first circuit board and the connecting circuit board. A second connecting component is disposed between the second end of the second circuit board and the connecting circuit board, and the second connecting component can pass through the second mounting hole along the first direction to electrically connect the second circuit board and the connecting circuit board.

6. The transformer module according to claim 5, characterized in that, The first connection component includes: A female connector is disposed in the first mounting hole and is electrically connected to the first circuit board; The pin header is disposed at the first end of the connecting circuit board and is electrically connected to the connecting circuit board. The pin header can be inserted and mated with the female header so that the pin header is electrically connected to the female header.

7. The transformer module according to claim 1, characterized in that, The transformer module also includes: A connector, wherein a first end of the connector is connected to the edge of the second circuit board and a second end of the connector is connected to the edge of the first circuit board, thereby restricting the first circuit board and the second circuit board from moving closer to or further away from each other along the first direction.

8. The transformer module according to claim 7, characterized in that, The connector includes a first snap-fit ​​groove disposed at a first end of the connector, and the second circuit board includes a first snap-fit ​​portion, which engages with the first snap-fit ​​groove to limit the movement of the second circuit board along the first direction. The connector includes a second snap-fit ​​groove disposed at the second end of the connector. The first circuit board includes a second snap-fit ​​portion, which engages with the second snap-fit ​​groove to limit the movement of the first circuit board along the first direction.

9. The transformer module according to claim 1, characterized in that, The transformer is electrically connected to the first circuit board via conductive leads.

10. A battery charging and discharging device, characterized in that, include: Probe assembly; The transformer module as described in any one of claims 1 to 9, wherein the second circuit board of the transformer module is electrically connected to the probe assembly.

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