Integrated PCBA bus board

Abstract

The utility model discloses an integrated PCBA bus board, which belongs to the technical field of new energy storage systems and comprises a PCB substrate, a current acquisition module used for acquiring charging and discharging current of a high-voltage loop, a loop protection module used for protecting the high-voltage loop, a pre-charging module used for limiting instantaneous impact of high-voltage current, and a heating control module used for heating a battery. The control switching module is used for controlling the working temperature of the circuit module so that the working temperature of the circuit module is in an optimal range, and the step-down filtering module is used for converting high voltage into low voltage and filtering noise and ripples in a power supply, and the control switching module is used for unifying interfaces of the circuit module. The integrated PCBA bus board is technically characterized in that compared with a traditional component assembly form, the integrated PCBA bus board has high function integration level on the basis that the same function can be achieved, so that the size is remarkably reduced, tedious wiring work is greatly reduced, the situation of wiring error of a wiring harness is avoided, meanwhile, the installation space is saved, and the installation cost is reduced. And the cost can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy energy storage system technical field, such as household high pressure energy storage system, commercial and industrial energy storage system, concretely is a battery high pressure control part integrated PCBA busbar. BACKGROUND

[0002] The high voltage control part of the energy storage high voltage control system or power battery system is the core management unit, which is responsible for efficient distribution of electric energy to energy storage inverter motor, air conditioner and other high voltage components, has multiple safety mechanisms such as overcurrent, overvoltage and short circuit protection, real-time monitoring of circuit state and communication with BMS, optimization of energy efficiency, extension of battery life, improvement of energy storage system or vehicle safety and reliability.

[0003] At present, the high voltage control part of the energy storage system or power battery system adopts component assembly form, which is usually composed of shell and internal various electrical elements, such as separate pre-charging resistor, pre-charging relay, heating relay, heating fuse, shunt, DCDC power module, filter circuit board, shunt, etc. They are connected to each other by cable. Because there are many elements and the connection relationship is complex, the wire harness is mixed up and easy to make mistakes during assembly, which makes the assembly and subsequent maintenance work more complicated, and also occupies a large space, which is not conducive to the overall design of the equipment. Therefore, an integrated PCBA busbar is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem to provide an integrated PCBA busbar, which takes PCB substrate as carrier, and carries current collection module, loop protection module, pre-charging module, heating module, voltage reduction filter module and control switching module on it. Compared with the traditional component assembly form, the integrated PCBA busbar can realize the same function, and has high functional integration, so the volume is significantly reduced, the wiring work is greatly reduced, the wiring error of wire harness is avoided, the installation space is saved, the cost is effectively reduced, and the technical problems of the prior art are solved. The component assembly form has many elements and complex connection relationship, which is easy to make mistakes during assembly, and makes the assembly and subsequent maintenance work more complicated, and also occupies a large space.

[0005] The technical solution adopted by the embodiment of the application to solve the technical problem is:

[0006] The application discloses an integrated PCBA busbar, which comprises a PCB substrate, and a current collection module, a loop protection module, a pre-charging module, a heating module, a voltage reduction and filtering module and a control switching module are arranged on the PCB substrate; the current collection module is used for collecting high-voltage loop charging and discharging current; the loop protection module is used for protecting the high-voltage loop; the pre-charging module is used for limiting the instantaneous impact of high-voltage current; the heating control module is used for heating the battery so that the working temperature of the battery is within an optimal range; the voltage reduction and filtering module is used for converting high voltage into low voltage and filtering noise and ripple in the power supply to supply the circuit module for cooperation; and the control switching module is used for unifying the interfaces of the circuit modules. Compared with a traditional component assembly form, the integrated PCBA busbar can realize the same function, has high functional integration, is significantly reduced in size, greatly reduces complicated wiring work, avoids wiring errors of a wire harness, saves installation space and can effectively reduce cost.

[0007] In a possible implementation, the current collection module comprises a plurality of patch shunts, and the system high-voltage total positive, total negative and patch shunts are integrated on an interface through PCB lines, the interface is directly connected with the BMS, and the patch shunts can realize distribution, measurement and protection of current or signals through the resistance voltage division principle, thereby providing a necessary structural basis for the work of the entire busbar.

[0008] In a possible implementation, the number of the patch shunts is increased or decreased according to the current size of different projects, that is, the greater the current, the more the patch shunts, and vice versa. The above scheme can increase or decrease the number of the patch shunts according to actual conditions, so that the parameter characteristics of the busbar have certain flexibility.

[0009] In a possible implementation, the loop protection module comprises a main loop fuse arranged between a high-voltage loop battery positive electrode B+ and a power supply positive electrode P+, and the main loop fuse can be replaced by different specifications and parameters. When the circuit is abnormal, the main loop fuse works to disconnect the circuit, thereby protecting the circuit.

[0010] In a possible implementation, the pre-charging module comprises a plurality of pre-charging resistors and a pre-charging relay, the number of the pre-charging resistors can be increased or decreased according to the requirements of the demand project, and the pre-charging loop is connected with a plurality of pre-charging resistors, so that the current can be limited within a safe range and the relay or capacitor is prevented from being burnt out.

[0011] In a possible implementation, the heating control module comprises a heating fuse and a heating relay, and the heating fuse is connected in an external battery heating circuit. The above structural form can control and protect the battery heating circuit.

[0012] In a possible implementation, the voltage reduction filter module comprises a high-voltage filter module and a low-voltage filter module, wherein the high-voltage filter module is used to convert high voltage into 24V low voltage, and the low-voltage filter module is used to convert 24V low voltage into 5V low voltage. Through the above scheme, the input high voltage can be converted into several kinds of low voltage for internal electrical elements, and the design of the filter circuit can make the output low voltage power supply more stable and reliable.

[0013] In a possible implementation, the control switching module comprises a main loop charging relay control interface, a main loop discharging relay control interface, and a switching interface, wherein the main loop charging relay control interface and the main loop discharging relay control interface are switched to the switching interface through a PCB board line, and are connected to the BMS. The above structure can significantly reduce the connection and laying of cables, and further improve the convenience and neatness of the busbar during use.

[0014] In summary, the utility model has the following beneficial technical effects:

[0015] The integrated PCBA busbar takes a PCB substrate as a carrier, and is loaded with a current collection module, a loop protection module, a pre-charging module, a heating module, a voltage reduction filter module, and a control switching module. Compared with a traditional component assembly form, the integrated PCBA busbar can realize the same function, has a high functional integration degree, and thus is significantly reduced in size, greatly reduces complicated wiring work, avoids wiring errors of a wire harness, saves installation space, and effectively reduces cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the utility model, constitute a part of the specification, are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a current collection module circuit principle of the utility model Figure 1 ;

[0019] Figure 3 It is a current collection module circuit principle of the utility model Figure 2 ;

[0020] Figure 4 It is a pre-charging module circuit principle diagram of the utility model;

[0021] Figure 5The utility model discloses a control switching module circuit schematic diagram;

[0022] Figure 6 The utility model discloses a high voltage switching 24V circuit schematic diagram;

[0023] Figure 7 The utility model discloses a 24V switching 5V circuit schematic diagram.

[0024] In the drawing: 1, patch shunt; 2, main circuit fuse; 3, high voltage filter module; 4, pre-charge resistance; 5, pre-charge relay; 6, heating fuse; 7, heating relay; 8, low voltage filter module; 9, switching interface; 10, main circuit charging relay control interface; 11, main circuit discharge relay control interface. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiment of the application is to solve the problems in the above background art, and the general idea is as follows:

[0026] As Figure 1 Indicated, an integrated PCBA busbar provided by the embodiment includes a PCB substrate, which is provided with a current collection module, a loop protection module, a pre-charge module, a heating module, a step-down filter module and a control switching module; the current collection module is used to collect high-voltage loop charging and discharging current; the loop protection module is used to protect the high-voltage loop; the pre-charge module is used to limit the instantaneous impact of high-voltage current; the heating control module is used to heat the battery so that its working temperature is within the optimal range; the step-down filter module is used to convert high voltage into low voltage and filter out noise and ripple in the power supply to supply the circuit module for cooperation; and the control switching module is used to unify the interface of the circuit module. Compared with the traditional component assembly form, the integrated PCBA busbar can realize the same function, has a high degree of functional integration, significantly reduces the volume, greatly reduces the cumbersome wiring work, avoids the wiring error of the wire harness, saves the installation space, and can effectively reduce the cost.

[0027] The current collection module includes a plurality of patch shunts 1, the system high-voltage total positive, total negative and patch shunts 1 are integrated on an interface through PCB lines, the interface is directly connected with the BMS, the patch shunts 1 can realize the distribution, measurement and protection of current or signal through the resistance voltage division principle, and provide the necessary structural basis for the work of the whole busbar, and the working principle is as shown in Figures 2-3The number of the patch shunt 1 is increased or decreased according to the current size of different projects, the greater the current, the more the number of the patch shunt 1, and vice versa, so that the number of the patch shunt 1 can be increased or decreased according to the actual situation, and the parameter characteristics of the busbar have certain flexibility.

[0028] The circuit protection module comprises a main circuit fuse 2 arranged between a high-voltage circuit battery positive electrode B+ and a power supply positive electrode P+, and the main circuit fuse 2 can be replaced by different specifications, and when an abnormality occurs in the circuit, the main circuit fuse 2 works to disconnect the circuit, thereby protecting the circuit.

[0029] The pre-charging module comprises a plurality of pre-charging resistors 4 and a pre-charging relay 5, wherein the number of the pre-charging resistors 4 can be increased or decreased according to the requirements of the project, and the pre-charging circuit is connected in series with a plurality of pre-charging resistors 4, so that the current can be limited within a safe range, thereby avoiding burning the relay or the capacitor, and the working principle is as shown in Figure 4 .

[0030] The heating control module comprises a heating fuse 6 and a heating relay 7, wherein the heating fuse 6 is connected in the external battery heating circuit, and the above structure can control and protect the battery heating circuit.

[0031] The voltage reduction filter module comprises a high-voltage filter module 3 and a low-voltage filter module 8, wherein the high-voltage filter module 3 is used to convert high voltage into 24V low voltage, and the low-voltage filter module 8 is used to convert 24V low voltage into 5V low voltage, through the above scheme, the input high voltage can be converted into a plurality of low voltages for use by internal electrical elements, and the design of the filter circuit can make the output low voltage power more stable and reliable, and the working principle is as shown in Figures 6-7 .

[0032] In a possible implementation, the control switching module comprises a main circuit charging relay control interface 10, a main circuit discharging relay control interface 11 and a switching interface 9, wherein the main circuit charging relay control interface 10 and the main circuit discharging relay control interface 11 are connected to the switching interface 9 through the PCB board line, and are connected to the BMS through the switching interface 9, and the above structure can significantly reduce the connection and laying of the cable, and further improve the convenience and neatness of the busbar in use, and the working principle of the above scheme is as shown in Figure 5 .

[0033] The use principle and use process of the utility model are as follows:

[0034] Compared with the traditional component assembly form, the integrated PCBA bus plate can realize the same function, and due to the high functional integration, the volume is significantly reduced, the cumbersome wiring work is greatly reduced, the wiring error of the wire harness is avoided, the installation space is saved, and the cost is effectively reduced.

[0035] The current collection module includes a plurality of patch shunts 1, which can realize the distribution, measurement and protection of current or signal through the resistance voltage division principle, and provide the necessary structural basis for the work of the entire bus plate; the circuit protection module includes a main circuit fuse 2, which works to disconnect the circuit when the circuit is abnormal, thereby protecting the circuit; the pre-charging module includes a plurality of pre-charging resistors 4 and pre-charging relays 5, which can limit the current within a safe range to avoid burning the relay or capacitor; the heating control module includes a heating fuse 6 and a heating relay 7, which can control and protect the battery heating circuit; the voltage reduction and filtering module includes a high-voltage filtering module 3 and a low-voltage filtering module 8, which can convert the input high voltage into several low voltages for use by internal electrical elements, and the design of the filtering circuit can make the output low voltage power more stable and reliable; the control switching module includes a main circuit charging relay control interface 10, a main circuit discharging relay control interface 11 and a switching interface 9, which can significantly reduce the connection and laying of cables, and further improve the convenience and neatness of the bus plate in use.

[0036] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An integrated PCBA busbar, characterized in that, include: The PCB substrate is equipped with a current acquisition module, a circuit protection module, a pre-charge module, a heating module, a step-down filter module, and a control conversion module. The current acquisition module is used to acquire the charging and discharging current of the high-voltage circuit; Circuit protection module, used to protect high-voltage circuits; The precharge module is used to limit the instantaneous impact of high-voltage current and protect the circuit. The heating control module is used to control the battery heating circuit to keep the battery operating temperature within the optimal range. A step-down filter module is used to convert high voltage to low voltage and filter out noise and ripple in the power supply to supply the circuit modules that work together. Control adapter module, which is used to unify the interface of circuit modules.

2. The integrated PCBA busbar according to claim 1, characterized in that: The current acquisition module includes several surface mount shunts (1). The system high voltage positive and negative terminals and the surface mount shunts (1) are integrated into one interface through PCB circuitry. This interface is directly connected to the BMS.

3. An integrated PCBA busbar according to claim 2, characterized in that: The number of surface mount shunts (1) can be increased or decreased depending on the current of different projects. The larger the current, the more surface mount shunts (1) can be installed, and vice versa.

4. An integrated PCBA busbar according to claim 1, characterized in that: The circuit protection module includes a main circuit fuse (2), which is located between the positive terminal B+ of the high-voltage circuit battery and the positive terminal P+ of the power supply, and the main circuit fuse (2) can be replaced with different specifications.

5. An integrated PCBA busbar according to claim 1, characterized in that: The pre-charge module includes several pre-charge resistors (4) and pre-charge relays (5), wherein the number of pre-charge resistors (4) can be increased or decreased according to the requirements of the project.

6. An integrated PCBA busbar according to claim 1, characterized in that: The heating control module includes a heating fuse (6) and a heating relay (7), wherein the heating fuse (6) is connected to an external battery heating circuit.

7. An integrated PCBA busbar according to claim 1, characterized in that: The step-down filter module includes a high-voltage filter module (3) and a low-voltage filter module (8), wherein the high-voltage filter module (3) is used to convert the high voltage to 24V low voltage, and the low-voltage filter module (8) is used to convert the 24V low voltage to 5V low voltage.

8. An integrated PCBA busbar according to claim 1, characterized in that: The control transfer module includes a main circuit charging relay control interface (10), a main circuit discharging relay control interface (11), and a transfer interface (9). The main circuit charging relay control interface (10) and the main circuit discharging relay control interface (11) are both transferred to the transfer interface (9) through PCB board lines, and are uniformly connected to the BMS.

Images