WO2021253928A1

WO2021253928A1 - Integrated battery electronic control system and lithium battery pack having same

Info

Publication number: WO2021253928A1
Application number: PCT/CN2021/085430
Authority: WO
Inventors: 施敏捷; 姚帅; 陈鑫; 王中照; 谢建伟; 杨宝顺
Original assignee: 苏州精控能源科技有限公司
Priority date: 2020-06-15
Filing date: 2021-04-02
Publication date: 2021-12-23
Also published as: CN111439162A; CN111439162B

Abstract

An integrated battery electronic control system (14) and a lithium battery pack (2) having same. A BMS controller (19), main positive switching semiconductor devices (22), main negative switching semiconductor devices (23), a heat dissipation assembly, a fuse (20), and shunts (21) are integrated on a printed circuit board assembly of the electronic control system (14); the main positive switching semiconductor devices (22) and the main negative switching semiconductor devices (23) are provided on a main power supply loop of a battery current output end; the heat dissipation assembly dissipates heat for the main positive and main negative switching semiconductor devices (22, 23); the fuse (20) comprises two copper bars and a whole fuse piece or multiple fuse wires provided between the two copper bars; and the shunts (21) are connected to the BMS controller (19) and are used for measuring the current in a circuit.

Description

Integrated integrated battery electric control system and lithium battery pack containing the electric control system

Technical field

The present invention relates to the field of battery control, in particular to an integrated battery pack control device in a lithium battery pack and a lithium battery pack integrated with the control device.

Background technique

New energy vehicles are developing in the direction of electrification, intelligence, light weight, and integration. Improving the safety and cruising range of passenger vehicles is the direction of continuous improvement of new energy vehicles. The power lithium battery of an electric vehicle is the core component of the car. The high-voltage electrical system includes battery controllers, high-voltage fuses, high-voltage contactors, pre-charging resistors, and many other electrical components, as well as copper wire harnesses and many other accessories. Heavy weight, many connection points, scattered layout, poor uniformity and versatility, high cost and low efficiency. These technical bottlenecks restrict the development of new energy vehicles.

Figure 1 shows the internal structure of a traditional battery pack in the prior art, including a battery box (1), a lithium battery pack (2), and electrical components. The electrical components include mechanical contactor I (5) and mechanical contactor II (6). ), mechanical contactor III (8), precharge resistor (7), Hall current sensor (3), fuse I (4), BMS controller (9), explosion-proof device (13), total positive connector (10), the total negative connector (11), the external power connector (12), each electrical component is scattered and distributed in the battery box (1) of the battery pack, and each electrical component is large in size, Problems such as high cost, complicated installation and connection; in addition, traditional fuse installation methods are all fixed on the battery box with screws, which are larger in size, and some need to be equipped with accessories such as insulating bases, which are complicated in structure, cumbersome to install, and assembly. The required cost is high; in addition, in the traditional battery charging circuit, in order to protect the electronic components in the box from being damaged by the impact of high current, mechanical contact relay components are often used to ensure the battery pack for a long time in the charging cycle. Stable operation, however, the mechanical contact relay components are expensive, and the production cost is relatively high, and because the mechanical contact relay components are large in size, they do not meet the needs of miniaturization of the electronic control system. The proposed technology of the present invention aims to manufacture products that meet the above-mentioned requirements through a new integrated integrated structure.

Summary of the invention

The main purpose of the present invention is to provide an integrated integrated battery electric control system, in particular, to provide an integrated lithium battery pack integrated battery electric control system to meet the requirements of saving volume, cost, and improving standardization, so as to solve the current situation. There are the above technical problems mentioned in the technology.

In order to achieve the above objective, the main method of the present invention is to provide an integrated integrated battery electric control system, including: an electric control box; a front panel, the front panel is arranged on the front side of the electric control box; a printed circuit board assembly The printed circuit board assembly is arranged in the electric control box; the electric control system is directly connected to the lithium battery pack through a standard interface, and is fixedly installed in the mounting hole on the front side of the battery box through the front panel, the electric control box The body and/or the front panel and the battery box are installed with a waterproof structure; the front panel is provided with a number of electrical component interfaces, and the electrical component interfaces include a total positive connector and a total negative connector; the printed circuit board The integrated components include a BMS controller, a total positive switching semiconductor device, a total negative switching semiconductor device, a heat dissipation component, a fuse, a shunt, and a precharge circuit; the total positive switching semiconductor device and a total negative switching semiconductor device The devices are respectively arranged at the main power supply circuit at the battery current output end and the main return circuit at the current return end for controlling the on and off of battery current output and return. The semiconductor device dissipates heat to ensure long-term stable operation of the integrated device; the fuse includes two copper bars and a whole piece of fuse or multiple fuses arranged between the two copper bars; the shunt is connected to the BMS controller , Used to detect the size of the current in the circuit; where the internal battery passes through the fuse, shunt, total positive switching semiconductor device, total negative switching semiconductor device and the total positive connector on the front panel, and the total negative The connectors are electrically connected to form a power supply port for an external electrical device; the precharge loop includes a precharge switch type semiconductor device and a precharge resistor, and the precharge switch type semiconductor device is electrically connected to the precharge resistor correspondingly; The charging switch type semiconductor device, the total positive switch type semiconductor device, and the total negative switch type semiconductor device adopt field-effect transistor MOSFET and/or composite full-control voltage-driven power semiconductor device.

Further, a heat dissipation structure is further provided on the electric control box, and the heat dissipation structure is matched and connected with the heat dissipation assembly.

Further, an explosion-proof device is also provided on the electric control box.

Preferably, the explosion-proof device is an explosion-proof valve.

Further, the printed circuit board assembly is also integrated with an intelligent power management system, and the intelligent power management system, together with an intelligent terminal and/or a cloud platform, form an intelligent information interaction system.

Preferably, the intelligent information interaction system includes a data collection module, a wireless module, a diagnosis and calibration system and a controller, and the data collection module, the wireless module, the diagnosis and calibration system are all electrically connected to the controller.

In addition, the present invention also provides an integrated lithium battery pack, including a casing, in which is provided a battery pack formed by connecting two or more single lithium batteries in series or in parallel, and the aforementioned integrated integrated battery electronic control system connected to the battery pack . The integrated integrated battery electric control system is arranged on one side of the battery box, and the electrical component interface is output from the battery box.

Adopting the integrated integrated battery electric control system of the present invention and the integrated lithium battery pack equipped with the device can achieve the following beneficial effects:

This "integrated battery pack control device", compared with existing market products, highly integrates all electrical components, reduces the volume, reduces the weight, unified interface standardized design, eliminates wiring harnesses and connectors, and saves Production man-hours improve work efficiency and save costs. The relative space saving ratio is about 70% and the weight ratio is about 20%. The saved space can be used to arrange more batteries, thereby increasing the amount of batteries that can be accommodated in a limited space. The number of cores is beneficial to increase the battery power and energy density, and increase the cruising range; the present invention replaces the traditional total positive switching semiconductor device installed on the main power supply circuit and the total negative switching semiconductor device installed on the main return circuit The mechanical contact relay element protects the electronic elements from the impact of large currents while greatly reducing the production cost of the product. The heat dissipation components integrated on the printed circuit board can dissipate the switching semiconductor devices to ensure the switching semiconductors. The device is protected from overheating damage, so that the battery pack can work stably for a long time during the charging cycle; the new integrated fuse scheme of the present invention changes the installation method, reduces the volume, and reduces the cost by about 2/3 ; By setting the explosion-proof device structure, when the system pressure is greater than the set pressure, the internal pressure of the battery can be quickly relieved to prevent the system from exploding and ensure the safety of use; and the construction is composed of an intelligent power management system, an intelligent terminal and/or a cloud platform The intelligent information interaction system is based on wireless communication technology to interconnect the battery, mobile phone, and the cloud, so that users can understand the working status of the battery at any time, and upgrade the control system in the cloud, so as to achieve human-battery intercommunication. Therefore, the "integrated integrated battery electric control system" formed by the present invention and the lithium battery pack with the electric control system have both intelligence, safety and low cost, are convenient for large-scale mass production, and have huge market application prospects.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only For some of the embodiments of the present invention, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Figure 1 is a schematic diagram of the internal structure of a traditional battery pack in the prior art;

2 is a schematic diagram of the internal structure of the integrated lithium battery pack of the present invention;

3 is a perspective view of a preferred embodiment of the integrated lithium battery pack of the present invention;

Figure 4 (a) is a front view of the first embodiment of the electric control box of the integrated battery electric control system of the present invention;

Figure 4(b) is a side view of the first embodiment of the electric control box of the integrated battery electric control system of the present invention;

Figure 4(c) is a rear view of the first embodiment of the electric control box of the integrated battery electric control system of the present invention (with the rear cover of the electric control box hidden);

5 is a perspective view of the front of the printed circuit board in the first embodiment of the integrated battery electronic control system of the present invention;

Figure 6 (a) is a schematic structural diagram of a fuse according to a preferred embodiment of the present invention;

Figure 6(b) is a schematic structural diagram of a fuse according to another preferred embodiment of the present invention;

7 is a schematic diagram of the appearance of the second embodiment of the integrated battery electronic control system of the present invention;

8 is a schematic diagram of the interaction of the intelligent information interaction system in the third embodiment of the integrated battery electronic control system of the present invention;

Fig. 9 is a diagram of a preferred circuit layout among various electrical components on the printed circuit board of the integrated integrated battery electronic control system of the present invention.

Description of reference signs:

1. Battery box; 2. Lithium battery pack; 3. Hall current sensor; 4. Fuse I; 5. Mechanical contactor I; 6. Mechanical contactor II; 7. Precharge resistor; 8. Mechanical Type contactor III; 9. BMS controller; 10. Total positive connector; 11. Total negative connector; 12. External power connector; 13. Explosion-proof device; 14. Integrated integrated battery electronic control system; 15. Electricity Control box; 16. Front panel; 17. Heat sink; 18. Waterproof sealing strip placement space; 19. Integrated BMS controller; 20. Fuse II; 21. Shunt; 22. Total positive switching semiconductor device; 23. Total negative switching semiconductor device; 24. Copper bar; 25. Fuse; 26. Fuse; 27. Explosion-proof valve.

detailed description

The following describes the technical solutions in the embodiments of the present invention clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Figure 2 is a schematic diagram of the internal structure of the integrated lithium battery pack of the present invention. The whole lithium battery pack is simplified into a battery box (1), a lithium battery pack (2), and an integrated integrated battery electronic control system (14). The integrated battery electric control system (14) is arranged on one side of the battery box (1). Among them, all electrical components are highly integrated on the printed circuit board, the entire integrated lithium battery pack structure discards a large number of wiring harnesses and connectors, and the integrated integrated battery electronic control system (14) does not contain wiring harnesses, reducing the size and Weight, the internal space of the battery box (1) is greatly saved, and the saved space can be used to arrange more batteries, thereby increasing the number of batteries that can be accommodated in a limited space, which is beneficial to improve battery power and energy Density increases the mileage; in addition, the system adopts standard interface design schemes both internally and externally. After integration, only the integrated integrated battery electronic control system (14) can be directly connected to the lithium battery pack, which simplifies the connection method; Because a large number of connectors are omitted, no wiring harness is required and standardized design is adopted, it can greatly save production man-hours, improve work efficiency, greatly save production costs, and facilitate large-scale mass production. In addition, the present invention also uses finite element analysis software to perform simulation analysis and experimental testing on the structural strength, stiffness and vibration mode of the integrated integrated battery electronic control system (14). On this basis, the integrated integrated battery electronic control system (14) Carry out lightweight design, and use finite element simulation analysis and test methods to verify the results of lightweight design to improve product reliability and safety.

Figure 3 is a perspective view of a preferred embodiment of the integrated lithium battery pack of the present invention. The battery box (1) has a rectangular parallelepiped structure as a whole, and the integrated integrated battery electronic control system (14) is fixedly installed on the front side of the battery box (1) In the installation holes of the, the total positive connector (10), the total negative connector (11), and the external power connector (12) constitute the external electrical component interface of the integrated lithium battery pack. In addition, the integrated integrated battery electronic control system (14) is also integrated with an explosion-proof device (13) and a heat sink (17) to improve the safety and heat dissipation effect of the system. The specific structure will be described in detail below.

In order to more clearly show the structure and functional characteristics of the integrated integrated battery electronic control system, the following will focus on the structure of the integrated integrated battery electronic control system.

Figures 4(a), 4(b), and 4(c) are the appearance schematic diagrams of the first embodiment of the electric control box of the integrated battery electric control system (14) of the present invention, including the electric control box (15) and the front A panel (16), the front panel (16) is arranged on the front side of the electric control box (15), and the front panel (16) is provided with a total positive connector (10) and a total negative connector (11) , External power connector (12), heat sink (17); the integrated integrated battery electric control system (14) has a rectangular parallelepiped structure as a whole, with a size of 360*120*48.24 (mm), the front panel (16) The surroundings extend beyond the edge of the electric control box to form a mounting flange, and a number of waterproof sealing strip placement spaces (18) are evenly provided on the side of the mounting flange where the back of the mounting flange butts with the battery box (1), so as to facilitate the integration of the The integrated battery electronic control system (14) is fixedly installed in the mounting hole of the battery box (1) and meets the requirements of battery waterproof and air-tightness. The fixing method between the mounting flange and the battery box can adopt the existing technology Any conventional fixing means, such as: rivet connection, bolt connection, etc.; but it should be understood that the connection between the electric control box and the battery box can also be provided with a similar waterproof structure.

Figure 5 is a schematic diagram of the structure of the printed circuit board assembly of the first embodiment of the integrated integrated battery electronic control system of the present invention. The printed circuit board assembly integrates an integrated BMS controller (19), a fuse II (20), Shunt (21), total positive switching semiconductor device (22), total negative switching semiconductor device (23); any conventional connection method in the field can be used between the lithium battery cells in the lithium battery pack, such as series, Connected to the total positive and total negative input terminals on the printed circuit board in parallel, hybrid, etc., and pass through the fuse II (20), the shunt (21), the total positive switching semiconductor device (22), and the total negative switch The integrated semiconductor device (23) is electrically connected with the general positive connector (10) and the general negative connector (11) on the front panel to jointly form a power supply port for an external electrical device.

The shunt (21) of the present invention preferably uses high-power miniature high-precision resistors that are easy to integrate, which replaces the conventional external Hall current sensor (3) in the prior art. The high-power miniature high-precision resistors and BMS control The device is connected, using the good heat dissipation and low-temperature drift characteristics of the metal resistor, combined with the software real-time temperature calibration and compensation algorithm, to ensure that the system current detection accuracy is significantly higher than the traditional Hall current detection scheme, and the size of the electrical components is greatly reduced.

In order to further reduce the assembly cost of the fuse and improve production efficiency, the fuse II (20) of the present invention also adopts a structure integrated on a printed circuit board, as shown in Figures 6(a) and 6(b), the fuse The device II (20) includes two copper bars (24) and multiple fuses (25) or fuse pieces (26) arranged between the two copper bars (24). The fuse (25) or the fuse piece (26) can be Weld on the copper bar (24) using laser, ultrasonic and other welding processes, and strictly control the material (aluminum, nickel or aluminum-nickel composite material, etc.) and parameters such as length, thickness, diameter, area, etc., such as: optimizing welding equipment for solidification welding Specific parameters such as the power, the number of solder joints, the spacing, the tensile force detection, etc., ensure that the heat accumulation reaches the melting point during the over-current and the rapid fuse at the same time, to protect other electronic components from damage due to the over-current. The preferred fuse insurance scheme uses electronic conductivity. The fuse structure made of high-performance aluminum-nickel composite material and the copper bar on the printed circuit board are welded together by laser, replacing the traditional external fuse solution, which can enhance the adhesion between materials, maintain low resistivity and high electron emission Yes, and can maintain low resistivity in high temperature environments. The excellent performance of aluminum-nickel composite materials combined with reliable laser welding technology greatly improves the safety and reliability of the system. Further, in order to solve the overcurrent damage to the battery and other electrical components caused by the large current impact of the large capacitive load, the printed circuit board assembly is further integrated with a pre-charged switching semiconductor device, which is integrated with the pre-charged on the printed circuit board. The resistance corresponds to the electrical connection; in addition, the traditional mechanical contact relay has the disadvantages of large size, high cost, large drive current and power consumption (maximum 3A current), and long response time (millisecond response time). In order to solve the above problems, The pre-charged switching semiconductor device, total positive switching semiconductor device, and total negative switching semiconductor device of the present invention adopt field-effect transistors MOSFET and/or composite full-control voltage-driven power semiconductor devices integrated on a printed circuit board assembly, In addition, the above-mentioned total positive switching semiconductor device and total negative switching semiconductor device are respectively arranged on the main power supply circuit at the battery current output end and the main return circuit at the current return end, respectively, used to control the on and off of the battery current output and return, and the new solution is small in size. , Low cost, small drive current, maximum milliampere (mA) current, response time of microsecond (μS) level, fast protection control and higher safety performance. In addition, when the integrated integrated battery electronic control system of the present invention actually works, due to the small heat dissipation distance between the switching semiconductor devices, a large amount of heat accumulation will be generated. In order to solve the heat dissipation problem, the present invention adds The external mounting structure of the heat sink, which leads the heat generated inside the system to the outside of the box, effectively solves the heat dissipation problem of the switching semiconductor device. Of course, it should be understood that the heat sink is only a preferred heat dissipation structure implementation in this application. For example, any heat dissipation structure capable of performing heat dissipation is covered by the protection scope of the present invention.

In order to further improve the safety of use, the present invention provides an integrated integrated battery electronic control system of the second embodiment. As shown in FIG. 7, the difference between this embodiment and the first embodiment lies in the An explosion-proof device is further provided, and the explosion-proof device is preferably an explosion-proof valve (27). By setting the explosion-proof valve (27) structure, when the system pressure is greater than the set pressure, the explosion-proof valve sheet ruptures on its own, and the internal pressure of the battery is quickly relieved to prevent the system from exploding and ensure safe use. In order to further enhance the explosion-proof performance, the box structure of the present invention adopts PUW integrated integrated safety explosion-proof design, integrated precision thimble-type spring mechanism, and added E-PTFE waterproof and breathable membrane material, which not only has the explosion-proof function of the explosion-proof valve and reduces the explosion damage. , At the same time, it has waterproof and breathable function.

In order to improve the intelligence and interactivity of the battery system, facilitate the user to grasp the battery system usage status at any time, and bring risk early warning in time, the present invention provides an integrated battery electronic control system of the third embodiment, as shown in FIG. The printed circuit board assembly is further integrated with an intelligent power management system. The intelligent power management system includes a data acquisition module, a CAN bus, a wireless module, a diagnosis and calibration system and a controller, and the data acquisition module, wireless module, diagnosis and calibration The systems are all electrically connected to the controller, and further, the intelligent power management system, the intelligent terminal and/or the cloud platform together form an intelligent information interaction system. The working principle of the intelligent interactive system is roughly as follows: the data acquisition module in the intelligent power management system collects one or more parameter information in the battery working process, and communicates the parameter information with the wireless module through serial communication. For data interaction, the diagnosis and calibration system quickly determines the cause of the failure through the detection data. The wireless module and the mobile phone are connected and communicated wirelessly. The mobile phone APP displays the data and failure conditions in real time, and uploads the data to the cloud server for background recording, which can also be achieved through the mobile phone APP Load the upgrade program and perform a point-to-point wireless program upgrade of the battery management system.

The data collection module collects battery voltage, current, temperature, power, internal resistance and other data information. The wireless module includes but is not limited to Bluetooth, GPRS, WIFI, 3G, 4G, 5G; the smart terminal includes but is not limited to smart phones and PC computer; the diagnosis and calibration system can be connected to the PC computer through the CAN bus and/or connected to the mobile phone APP through the wireless mode, which can quickly determine the cause of the failure through data recording and fault information, or rewrite some parameters to the control In the device for debugging and verification and program upgrades, the present invention preferably adopts two sets of diagnosis and calibration systems, namely: two sets of online diagnosis and calibration systems based on CAN bus and wireless communication modules (Bluetooth/wifi/4G, etc.), using online diagnosis systems Read fault codes in real time, quickly confirm faults, develop a calibration system based on the CCP/XCP standard protocol, support online real-time data calibration, and be compatible with a variety of variable parameter forms, which facilitate the expansion of functions in the actual application process, and provide two sets of on-site and remote control Diagnosis and calibration schemes facilitate troubleshooting and maintenance, and improve diagnosis and service efficiency; in addition, the present invention preferably adopts an OTA air upgrade system (including energy management, thermal management, performance optimization, on-board charging, etc.) to comprehensively analyze the driving status of the vehicle , Software version, sub-system status and other influencing factors, develop support for software rollback, breakpoint resuming, loss retransmission and other abnormal handling mechanisms to avoid external interference or other factors causing flashing exceptions or interruptions; at the same time, flash storage and backup Use encryption & authentication to improve the security protection function of the system and avoid external attacks.

The lithium battery pack of the third embodiment of the present invention is preferably a vehicle-mounted lithium battery pack, which constructs an intelligent information interaction system composed of an intelligent power management system, a user's mobile phone APP, and a remote back-end. It can conduct information on cars, mobile phones, and the cloud based on wireless communication technology. Interconnection, the power management system is connected to the CAN network of the vehicle through the CAN bus, and the vehicle operating status, remaining power, cruising range and other information are displayed on the APP interface in real time. The APP can be used as a vehicle instrument to realize the communication between people and vehicles, CAN bus, wireless Module, two sets of diagnosis and calibration systems, data collection and service efficiency are improved, and OTA over-the-air upgrade technology can be realized, which can realize rapid software update and optimize performance; and the present invention may further include Advanced Encryption Standard (AES) 256-bit key The management system uses advanced keys to encode all data to be transmitted to ensure the security and reliability of information transmission.

Figure 9 is a schematic diagram of the circuit layout of a preferred embodiment of the integrated integrated battery electronic control system of the present invention. The printed circuit board assembly is integrated with an intelligent power management system, a total positive field effect transistor MOSFET, and a total negative field effect transistor MOSFET. , Fuse, shunt, precharge loop, main power supply circuit, and main return circuit; the precharge loop includes a precharge field effect transistor MOSFET and a precharge resistor; the main power supply circuit is provided with a total positive field effect transistor MOSFET; The main reflux circuit is provided with a total negative field effect transistor MOSFET; wherein the internal power input terminal B is sequentially connected to the output terminal B through the parallel circuit composed of the shunt, the fuse, the precharge circuit and the main power supply circuit; the internal power input The terminal A is connected to the output terminal A through the total negative field effect transistor MOSFET, and the output terminals A and B together form a power supply port for an external electric device. The intelligent power management system collects current information in real time, diagnoses whether the circuit is faulty, and sends it to the intelligent terminal in real time through the wireless module, and uploads the data to the cloud server background record. The intelligent terminal can also load the upgrade program to perform the battery management system. Point-to-point wireless program upgrade.

It should be understood that the figures and descriptions expressed above are only several preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. For those skilled in the art, they do not depart from the spirit and scope of the present invention. Under the premise of, any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall fall within the scope of the claimed invention.

Claims

An integrated battery electric control system, including:

Electric control box;

The front panel, the front panel is arranged on the front side of the electric control box;

A printed circuit board assembly;

The printed circuit board assembly is arranged in the electric control box;

It is characterized in that: the electric control system is directly connected to the lithium battery pack through a standard interface, and is fixedly installed in the mounting hole on the front side of the battery box through the front panel. The electric control box and/or the front panel and the battery box The installation place is provided with a waterproof structure; the front panel is provided with a number of electrical component interfaces, the electrical component interfaces include a total positive connector and a total negative connector; the printed circuit board assembly is integrated with a BMS controller, the total Positive switching semiconductor devices, total negative switching semiconductor devices, heat dissipation components, fuses, shunts, and pre-charging circuits; the total positive switching semiconductor devices and the total negative switching semiconductor devices are respectively arranged on the main power supply of the battery current output terminal The circuit and the main return circuit of the current return terminal are respectively used to control the on and off of battery current output and return. The heat dissipation component dissipates the heat of the total positive switching semiconductor device and the total negative switching semiconductor device to ensure a long time for the integrated device Stable operation; the fuse includes two copper bars and a whole piece of fuse or multiple fuses arranged between the two copper bars; the shunt is connected to the BMS controller and is used to detect the current in the circuit; Wherein, the internal battery is electrically connected to the total positive connector and the total negative connector on the front panel through the fuse, the shunt, the total positive switching semiconductor device, and the total negative switching semiconductor device to form an external electrical device. The precharge circuit includes a precharge switch type semiconductor device and a precharge resistor, the precharge switch type semiconductor device is electrically connected to the precharge resistor; the precharge switch type semiconductor device, the total positive switch type Semiconductor devices and total negative switching semiconductor devices adopt field-effect transistors MOSFET and/or composite full-control voltage-driven power semiconductor devices.
The integrated integrated battery electric control system of claim 1, wherein the electric control box is further provided with a heat dissipation structure, and the heat dissipation structure is matched and connected with the heat dissipation component.
The integrated battery electric control system according to claim 1 or 2, characterized in that: the electric control box is further provided with an explosion-proof device.
The integrated integrated battery electronic control system of claim 3, wherein the explosion-proof device is an explosion-proof valve.
The integrated integrated battery electronic control system according to claim 1 or 2, characterized in that: the printed circuit board assembly is also integrated with an intelligent power management system, and the intelligent power management system works with the intelligent terminal and/or cloud platform. Form an intelligent information interaction system.
The integrated battery electric control system of claim 5, wherein the intelligent power management system includes a data acquisition module, a wireless module, a diagnosis and calibration system and a controller, the data acquisition module, the wireless module, Both the diagnosis and calibration system are electrically connected to the controller.
An integrated lithium battery pack, which is characterized in that it comprises a battery box, a battery pack formed by two or more single lithium batteries is arranged in the battery box, and a battery pack connected to the battery pack as described in any one of claims 1-6 In the integrated integrated battery electric control system, the integrated integrated battery electric control system is arranged on one side of the battery box, and the electrical component interface is output from the battery box.