A high-performance fixed master-slave parallel boost fast charging system

Abstract

This application relates to a fixed master-slave parallel boost fast charging system for high-performance mobile phones, comprising a first battery unit and a second battery unit connected in parallel. The first battery unit includes a first battery module, a parallel positive control unit, a parallel positive control relay, a parallel negative control unit, and a parallel negative control relay. The second battery unit includes a second battery module. The parallel positive control relay is connected to the parallel positive control unit, the positive terminal of the first battery module, and the positive terminal of the second battery module, respectively. The parallel negative control relay is connected to the parallel negative control unit, the negative terminal of the first battery module, and the negative terminal of the second battery module, respectively. This system uses a parallel connection method and a boost method to compensate for the problem of device idleness caused by excessive charging time, which can significantly reduce charging time, effectively improve device utilization efficiency, thereby effectively alleviating range anxiety and improving the overall reliability of the battery system.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a high-performance fixed master-slave parallel boost fast charging system. Background Technology

[0002] Aerial work platforms (AWPs) are traditional special-purpose vehicles that are powered primarily by fuel or lead-acid batteries. With the development of the lithium battery new energy industry, the conversion from fuel to electricity and from lead to lithium is in full swing.

[0003] The application environments for high-voltage battery packs are extremely demanding. Charging is typically done directly on the vehicle frame (on-board charger) for immediate recharging whenever AC power is available. Because the vehicle is a low-voltage platform with high power requirements, low-voltage, high-capacity batteries are usually used, resulting in long charging times for the battery pack. For example, an 80V, 500Ah battery requires 6-7 hours to charge using an 80A charger. In low-temperature applications, heating is required before charging, increasing the waiting time to approximately 8-9 hours, causing serious concerns about range for vehicle users. If charging is forgotten or there is a power outage overnight, the equipment cannot be used the next day (as it takes the entire working period to fully charge the battery), severely impacting normal project schedules, increasing customer operating costs, and resulting in a poor user experience.

[0004] Furthermore, existing high-speed rail systems generally employ a master-slave series configuration, which places relatively high demands on the reliability of lithium batteries. If any battery pack malfunctions, the entire pack will fail, causing equipment downtime. Therefore, the master-slave series configuration has a lower tolerance for faults. In the event of an anomaly, the inability to move the equipment can lead to traffic congestion, and may even prevent operators from returning to the ground, causing panic among operators and potentially resulting in safety accidents. Utility Model Content

[0005] Based on this, this utility model provides a fixed master-slave parallel boost fast charging system for high-performance mobile phones, which aims to solve the problems of long charging time, high operating cost, low tolerance for faults, high reliability requirements for lithium batteries, and equipment downtime caused by the failure of the entire battery pack due to any abnormality in the battery box.

[0006] To achieve the above objectives, the present invention proposes the following technical solution: a high-performance fixed master-slave parallel boost fast charging system, comprising a first battery unit and a second battery unit connected in parallel; the first battery unit comprises a first battery module, a parallel positive control unit, a parallel positive control relay, a parallel negative control unit, and a parallel negative control relay, and the second battery unit comprises a second battery module;

[0007] The parallel positive control relay is connected to the parallel positive control unit, the positive terminal of the first battery module, and the positive terminal of the second battery module, respectively; the parallel negative control relay is connected to the parallel negative control unit, the negative terminal of the first battery module, and the negative terminal of the second battery module, respectively.

[0008] In a preferred embodiment, the first battery unit further includes a first shunt, a first BMS unit, a first fuse, a first DC / DC converter, a total positive control unit, a total positive relay, a first heating film, a first heating control relay, and a first heating control unit; the first battery module is connected to the first shunt, the first BMS unit, and the first fuse; the first BMS unit is connected to the first shunt, the first fuse, the first DC / DC converter, and the first heating control unit; the first heating film is connected to the first DC / DC converter and the first heating control relay; the first heating control relay is connected to the first heating control unit; the total positive relay is connected to the total positive control unit, the first fuse, and the first heating control relay; the first fuse is connected to the parallel positive control relay; and the first shunt is connected to the parallel negative control relay.

[0009] In this embodiment, the first fuse is disposed between the positive terminal of the first battery module and the parallel positive control relay, and the first shunt is disposed between the negative terminal of the first battery module and the parallel negative control relay.

[0010] In a preferred embodiment, the first battery unit further includes a second fuse, one end of which is connected to the first DC / DC conversion unit, and the other end is connected between the first shunt and the parallel negative control relay.

[0011] In a preferred embodiment, the first battery unit further includes a series control unit and a series control relay. One end of the series control relay is connected to the series control unit, the second fuse, and the first shunt, respectively, and the other end is connected between the parallel positive control relay and the positive terminal of the second battery module.

[0012] In a preferred embodiment, the first battery unit further includes a precharge control unit and a precharge control relay, wherein the precharge control relay is connected to the precharge control unit, the first fuse, and the first heating control relay, respectively.

[0013] In a preferred embodiment, a resistor is provided between the precharge control relay and the first heating control relay, and the resistor is connected to both the precharge control relay and the first heating control relay.

[0014] In a preferred embodiment, the first battery unit further includes a first power supply control unit and a first power supply relay, wherein the first power supply relay is connected to the first power supply control unit, the first fuse, and the first DC / DC conversion unit.

[0015] In a preferred embodiment, the first battery unit further includes a total negative control unit and a total negative relay, wherein the total negative relay is connected to both the total negative control unit and the parallel negative control relay. In this embodiment, the total negative relay has a charging / discharging negative terminal connected to it, meaning one end of the total negative relay is connected to the charging / discharging negative terminal.

[0016] In a preferred embodiment, the first battery unit further includes a first self-reset button, which is connected to the first fuse, the first DC / DC converter unit, and the first BMS unit.

[0017] In a preferred embodiment, a first diode is provided between the first BMS unit and the first DC / DC conversion unit, and the first diode is connected to the first BMS unit and the first DC / DC conversion unit respectively.

[0018] In a preferred embodiment, the first battery cell further includes a second diode, which is connected to the first BMS cell.

[0019] In a preferred embodiment, the first battery unit further includes a first indicator light, which is connected to the first BMS unit.

[0020] In a preferred embodiment, the first battery cell further includes a first charging / discharging positive terminal interface and a first charging / discharging negative terminal interface, one end of the first charging / discharging positive terminal interface being connected to the main positive relay, and one end of the first charging / discharging negative terminal interface being connected to the main negative relay.

[0021] In a preferred embodiment, the first BMS unit is provided with a first matching resistor, which is connected to the second battery unit.

[0022] In a preferred embodiment, the first battery module includes several first battery cells connected in series; the first battery cell is a cylindrical battery cell.

[0023] In a preferred embodiment, the cylindrical battery cell is a lithium battery cell or a sodium battery cell.

[0024] In a preferred embodiment, the second battery unit further includes a second shunt, a second BMS unit, a third fuse, a second DC / DC converter, a second heating film, a second heating control relay, and a second heating control unit; the second battery module is connected to the second shunt, the second BMS unit, and the third fuse; the second BMS unit is connected to the second shunt, the third fuse, and the second DC / DC converter; the second heating film is connected to the second DC / DC converter and the second heating control relay; the second heating control relay is connected to the second heating control unit and the third fuse; the second shunt is connected to the second DC / DC converter and the parallel negative control relay; the third fuse is connected to the parallel positive control relay; and the second BMS unit is connected to the first BMS unit.

[0025] In a preferred embodiment, the second battery unit further includes a fourth fuse, one end of which is connected to the second DC / DC conversion unit, and the other end is connected between the second shunt and the parallel negative control relay.

[0026] In a preferred embodiment, the second battery unit further includes a second power supply control unit and a second power supply relay, the second power supply relay being connected to the second power supply control unit, the third fuse, and the second DC / DC conversion unit, respectively.

[0027] In a preferred embodiment, the second battery unit further includes a second self-reset button, which is connected to the third fuse, the second DC / DC converter unit, and the second BMS unit, respectively.

[0028] In a preferred embodiment, a third diode is provided between the second BMS unit and the second DC / DC conversion unit, and the third diode is connected to the second BMS unit and the second DC / DC conversion unit respectively.

[0029] In a preferred embodiment, the second battery unit further includes a second indicator light, which is connected to the second BMS unit.

[0030] In a preferred embodiment, the second BMS unit is provided with a second matching resistor, which is connected to the first matching resistor.

[0031] In a preferred embodiment, the second battery module includes several second battery cells connected in series; the second battery cell is a cylindrical battery cell.

[0032] In a preferred embodiment, the cylindrical battery cell is a lithium battery cell or a sodium battery cell.

[0033] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This application adopts a master-slave control architecture, combining the first battery unit and the second battery unit, with the first battery unit as the master and the second battery unit as the slave. This fully leverages the advantages of each battery unit, minimizing the risk of downtime caused by battery malfunctions from the design stage. In the event of an malfunction in either battery unit, the other battery unit can independently provide power, ensuring usability while allowing time for maintenance. This minimizes the risk of secondary accidents caused by issues such as traffic congestion or people being unable to descend from heights. The system uses a parallel connection method and a boost converter to compensate for equipment idleness caused by excessively long charging times, significantly reducing charging time and effectively improving equipment efficiency. This effectively alleviates range anxiety and improves the overall reliability of the battery system. This application can be applied to high-performance automotive products, not only meeting the power system performance and logic strategy requirements of the original vehicle electrical architecture but also coping with diverse and complex operating environments. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of a fixed master-slave parallel boost fast charging system for high-performance computers according to an embodiment of this utility model.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] Specifically, such as Figure 1As shown, this utility model embodiment proposes the following technical solution: a high-performance fixed master-slave parallel boost fast charging system, including a first battery unit 100 and a second battery unit 200 connected in parallel; the first battery unit 100 includes a first battery module 101, a parallel positive control unit 102, a parallel positive control relay S_RL1, a parallel negative control unit 103, and a parallel negative control relay S_RL5_H; the second battery unit 200 includes a second battery module 201; the parallel positive control relay S_RL1 is connected to the parallel positive control unit 102, the positive terminal of the first battery module 101, and the positive terminal of the second battery module 201, respectively; the parallel negative control relay S_RL5_H is connected to the parallel negative control unit 103, the negative terminal of the first battery module 101, and the negative terminal of the second battery module 201, respectively.

[0043] In a preferred embodiment, the first battery unit 100 further includes a first shunt 104, a first BMS unit 105, a first fuse FU1, a first DC / DC converter 106, a total positive control unit 107, a total positive relay RL1, a first heating film 108, a first heating control relay RL4, and a first heating control unit 109; the first battery module 101 is connected to the first shunt 104, the first BMS unit 105, and the first fuse FU1; the first BMS unit 105 is connected to the first shunt 104, the first fuse FU1, the first DC / DC converter 106, a total positive control unit 107, a total positive relay RL1, a first heating film 108, a first heating control relay RL4, and a first heating control unit 109. DC conversion unit 106 and first heating control unit 109 are connected; first heating film 108 is connected to first DC / DC conversion unit 106 and first heating control relay RL4 respectively; first heating control relay RL4 is connected to first heating control unit 109; total positive relay RL1 is connected to total positive control unit 107, first fuse FU1 and first heating control relay RL4 respectively; first fuse FU1 is connected to parallel positive control relay S_RL1; first shunt 104 is connected to parallel negative control relay S_RL5_H.

[0044] In this embodiment, the first fuse FU1 is disposed between the positive terminal of the first battery module 101 and the parallel positive control relay S_RL1, and the first shunt FU1 is disposed between the negative terminal of the first battery module 101 and the parallel negative control relay S_RL5_H. The main positive relay RL1 is connected to the main positive adhesion detection port ST2-1(HV2+) of the first BMS unit 105 to realize the main positive adhesion detection. The main positive relay RL1 is connected to a charging / discharging positive terminal interface. The main positive relay RL1 is disposed between the first fuse FU1 and the first heating control relay RL4.

[0045] In a preferred embodiment, the first battery unit 100 further includes a second fuse FU2, one end of which is connected to the first DC / DC conversion unit 106, and the other end is connected between the first shunt 104 and the parallel negative control relay S_RL5_H.

[0046] In a preferred embodiment, the first battery unit 100 further includes a series control unit 110 and a series control relay S_RL2. One end of the series control relay S_RL2 is connected to the series control unit 110, the second fuse FU2, and the first shunt 104, respectively, and the other end is connected between the parallel positive control relay S_RL1 and the positive terminal of the second battery module 201.

[0047] In a preferred embodiment, the first battery unit 100 further includes a precharge control unit 111 and a precharge control relay RL2, wherein the precharge control relay RL2 is connected to the precharge control unit 111, the first fuse FU1, and the first heating control relay RL4, respectively.

[0048] In a preferred embodiment, a resistor R1 is provided between the precharge control relay RL2 and the first heating control relay RL4, and the resistor R1 is connected to the precharge control relay RL2 and the first heating control relay RL4 respectively.

[0049] In a preferred embodiment, the first battery unit 100 further includes a first power supply control unit 112 and a first power supply relay RL3, wherein the first power supply relay RL3 is connected to the first power supply control unit 112, the first fuse FU1, and the first DC / DC conversion unit 106.

[0050] In this embodiment, the first power supply control relay RL3 is disposed between the first fuse FU1 and the first DC / DC conversion unit 106.

[0051] In a preferred embodiment, the first battery unit 100 further includes a total negative control unit 113 and a total negative relay RL5_H, wherein the total negative relay RL5_H is connected to the total negative control unit 113 and the parallel negative control relay S_RL5_H, respectively. In this embodiment, the total negative relay RL5_H has a charging / discharging negative terminal connected to it, that is, one end of the total negative relay RL5_H is connected to the charging / discharging negative terminal.

[0052] In a preferred embodiment, the first battery unit 100 further includes a first self-reset button SB1, which is connected to the first fuse FU1, the first DC / DC converter unit 106, and the first BMS unit 105.

[0053] In a preferred embodiment, a first diode 114 is provided between the first BMS unit 105 and the first DC / DC conversion unit 106, and the first diode 114 is connected to the first BMS unit 105 and the first DC / DC conversion unit 106 respectively.

[0054] In a preferred embodiment, the first battery unit 100 further includes a second diode 115, which is connected to the first BMS unit 105.

[0055] In a preferred embodiment, the first battery unit 100 further includes a first indicator light 116, which is connected to the first BMS unit 105.

[0056] In a preferred embodiment, the first battery unit 100 further includes a first charging / discharging positive terminal interface (charging / discharging+) and a first charging / discharging negative terminal interface (charging / discharging-), one end of the first charging / discharging positive terminal interface is connected to the main positive relay, and one end of the first charging / discharging negative terminal interface is connected to the main negative relay.

[0057] In a preferred embodiment, a first matching resistor 1051 is provided on the first BMS unit 105, and the first matching resistor 1051 is connected to the second battery unit 200.

[0058] In a preferred embodiment, the first battery module 101 includes a plurality of first battery units 1011 connected in series; the first battery unit 1011 is a cylindrical battery unit.

[0059] In a preferred embodiment, the cylindrical battery cell is a lithium battery cell or a sodium battery cell.

[0060] In this embodiment, the IN+ interface of the first DC / DC conversion unit 106 is connected to the first self-reset button SB1 and the first power supply control relay RL3, respectively; the IN- interface of the first DC / DC conversion unit 106 is connected to the second fuse FU1 and the first heating film 108.

[0061] In this embodiment, the ON position interface of the first BMS unit 105 is connected to the first diode 114 and the ON position interface of the second BMS unit, respectively; one end of the normally powered positive interface (normally powered+) of the first BMS unit is connected between the ON position interface (first BMS unit) and the first diode. The normally powered negative interface of the first BMS unit is connected to the first DC / DC conversion unit, the first indicator light, and the first self-reset button, respectively.

[0062] In this embodiment, the positive and negative interfaces of the first BMS unit are connected to the positive and negative terminals of the positive control unit, respectively; the positive and negative interfaces of the first BMS unit are connected to the positive and negative terminals of the first power supply control unit, respectively; the positive and negative interfaces of the first BMS unit are connected to the positive and negative terminals of the precharge control unit, respectively; and when heating is required, the positive and negative interfaces of the first BMS unit are connected to the positive and negative terminals of the first heating control unit, respectively. The first battery module is connected to the ST1, ST2, and ST3 ports of the first BMS unit via a 16S voltage / 4NTC temperature sampling signal line. The first fuse FU1 is connected to the positive terminal of the first battery module, and the first shunt is connected to the negative terminal of the first battery module.

[0063] In a preferred embodiment, the second battery unit 200 further includes a second shunt 202, a second BMS unit 203, a third fuse FU3, a second DC / DC converter 204, a second heating film 205, a second heating control relay S_RL4, and a second heating control unit 206; the second battery module 201 is connected to the second shunt 202, the second BMS unit 203, and the third fuse FU3; the second BMS unit 203 is connected to the second shunt 202, the third fuse FU1, and the second DC / DC converter 204. 04 Connection; The second heating film 205 is connected to the second DC / DC conversion unit 204 and the second heating control relay S_RL4 respectively; The second heating control relay S_RL4 is connected to the second heating control unit 206 and the third fuse FU3 respectively; The second shunt 202 is connected to the second DC / DC conversion unit 204 and the parallel negative control relay S_RL5_H respectively; The third fuse FU3 is connected to the parallel positive control relay S_RL1; The second BMS unit 203 is connected to the first BMS unit 105.

[0064] In the embodiments of this application, the first battery unit 100 and the second battery unit 200 have similar structures.

[0065] In a preferred embodiment, the second battery unit 200 further includes a fourth fuse FU4, one end of which is connected to the second DC / DC conversion unit 204, and the other end is connected between the second shunt 202 and the parallel negative control relay S_RL5_H.

[0066] In a preferred embodiment, the second battery unit 200 further includes a second power supply control unit 207 and a second power supply relay S_RL3, wherein the second power supply relay S_RL3 is connected to the second power supply control unit 207, the third fuse FU3, and the second DC / DC conversion unit 204, respectively.

[0067] In a preferred embodiment, the second battery unit 200 further includes a second self-reset button SB2, which is connected to the third fuse FU3, the second DC / DC conversion unit 204, and the second BMS unit 203, respectively.

[0068] In a preferred embodiment, a third diode 208 is provided between the second BMS unit 203 and the second DC / DC conversion unit 204, and the third diode 208 is connected to the second BMS unit 203 and the second DC / DC conversion unit 204 respectively.

[0069] In a preferred embodiment, the second battery unit 200 further includes a second indicator light 209, which is connected to the second hydrogen fuel cell unit 203.

[0070] In a preferred embodiment, a second matching resistor 2031 is provided on the second BMS unit 203, and the second matching resistor 2031 is connected to the first matching resistor 1051.

[0071] In a preferred embodiment, the second battery module 201 includes a plurality of second battery units 2011 connected in series; the second battery unit 2011 is a cylindrical battery unit.

[0072] In a preferred embodiment, the cylindrical battery cell is a lithium battery cell or a sodium battery cell.

[0073] In the embodiments of this application, the first battery module and the second battery module can be the same battery module (such as both being lithium battery modules or both being sodium battery modules), or they can be different battery modules (such as the first battery module being a lithium battery module and the second battery module being a sodium battery module), preferably different battery modules.

[0074] In this embodiment, the ON position interface of the second BMS unit is connected to the third diode and the ON position interface of the first BMS unit, respectively; one end of the normally powered positive interface (normally powered +) of the second BMS unit is connected between the ON position interface (second BMS unit) and the third diode. The normally powered negative interface of the second BMS unit is connected to the second DC / DC conversion unit, the second indicator light, and the second self-reset button, respectively.

[0075] In this embodiment, when heating is required, the heating control positive and negative interfaces of the second BMS unit are connected to the positive and negative terminals of the second heating control unit, respectively. The second battery module is connected to the ST1, ST2, and ST3 ports of the second BMS unit via a 16S voltage / 4NTC temperature sampling signal line. The third fuse FU1 is connected to the positive terminal of the second battery module, and the second shunt is connected to the negative terminal of the second battery module. The BMS units in this application (including the first and second BMS units) all integrate a GPRS module.

[0076] The process controls when using the system of this application are as follows:

[0077] 1. Parallel discharge control

[0078] a. System power-on: Press and hold the start switch (normally open) for several seconds. After the system is powered on, the self-locking relay (RL3) will automatically close, continuously supplying power to the system; (the battery pack power is converted to 12V system power through an isolated DC / DC converter); the system will start a self-test, and if there are no abnormalities, it will enter relay control;

[0079] b. After the system is powered on at low voltage, keep relay S_RL2 open;

[0080] c. The BMS self-test shows no abnormalities. No charging communication messages or plug-in signals are detected. It is determined that the current state is discharging. The main negative relays RL5_H and S_RL5_H are closed.

[0081] d. Close the pre-charge relay RL2, and the battery system begins pre-charging;

[0082] e. After pre-charging is completed, if the total battery voltage of the first battery cell (i.e., box A) / the second battery cell (i.e., box B) is detected to be lower than 3V, close RL1 / S_RL1 to enter the parallel discharge state.

[0083] Notes: ① When box A or box B malfunctions, the system enters a single-box discharge state, and the corresponding relay remains disconnected; ② The system can be powered on via the switch of box A or box B, and either switch can trigger the power-on procedure.

[0084] 2. Series charging control

[0085] a. System power-on: When the BMS of box A detects the 12V auxiliary power supply voltage, it determines that the battery pack is currently in charging demand. The system enters the charging preparation stage, closes the self-locking relay, and keeps all other relays open.

[0086] b. If the self-test shows no abnormalities, the BMS detects the insertion signal or charging communication message, confirming that the current state is charging.

[0087] c. Keep S_RL1 and S_RL5_H relays open. The battery pack changes from a parallel state to a series state. At this time, the battery system voltage doubles and the capacity is halved, and the boost fast charging mode is started.

[0088] d. Close the series relay S_RL2, the main positive relay RL1, and the main negative relay RL5_H;

[0089] e. The BMS requests charging current from the charger and enters the charging state; at this time, the charging speed is twice as fast as the normal charging mode.

[0090] 3. Single-box operating mode (under any box failure)

[0091] a. When the battery in box B malfunctions, keep relays S_RL1 and S_RL2 open, and keep the main positive relay RL1, main negative relay RL5_H, and S_RL5_H closed, entering the independent power supply mode for box A. At the same time, the running light in box B will flash to indicate that box B is malfunctioning and needs to be repaired in time.

[0092] b. When the battery in box A fails, keep relays RL5_H and S_RL2 open, and keep the main positive relay RL1, S_RL1 and main negative relay RL5_H closed. The system will enter the independent power supply mode for box B. At the same time, the running light in box A will flash to indicate that box A is faulty and needs to be repaired in time.

[0093] 4. Fixed configuration description: In any mode, BMS in box A is the master controller and BMS in box B is the slave controller.

[0094] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0095] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0096] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A high-performance fixed master-slave parallel boost fast charging system, characterized in that, The system includes a first battery unit and a second battery unit connected in parallel. The first battery unit includes a first battery module, a parallel positive control unit, a parallel positive control relay, a parallel negative control unit, and a parallel negative control relay. The second battery unit includes a second battery module. The parallel positive control relay is connected to the parallel positive control unit, the positive terminal of the first battery module, and the positive terminal of the second battery module, respectively. The parallel negative control relay is connected to the parallel negative control unit, the negative terminal of the first battery module, and the negative terminal of the second battery module, respectively.

2. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 1, characterized in that, The first battery unit further includes a first shunt, a first BMS unit, a first fuse, a first DC / DC converter, a total positive control unit, a total positive relay, a first heating film, a first heating control relay, and a first heating control unit; the first battery module is connected to the first shunt, the first BMS unit, and the first fuse; the first BMS unit is connected to the first shunt, the first fuse, the first DC / DC converter, and the first heating control unit; the first heating film is connected to the first DC / DC converter and the first heating control relay; the first heating control relay is connected to the first heating control unit; the total positive relay is connected to the total positive control unit, the first fuse, and the first heating control relay; the first fuse is connected to the parallel positive control relay; and the first shunt is connected to the parallel negative control relay.

3. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 2, characterized in that, The first battery unit also includes a second fuse, one end of which is connected to the first DC / DC conversion unit, and the other end is connected between the first shunt and the parallel negative control relay; The first battery unit further includes a series control unit and a series control relay. One end of the series control relay is connected to the series control unit, the second fuse, and the first shunt, respectively, and the other end is connected between the parallel positive control relay and the positive terminal of the second battery module. The first battery unit further includes a precharge control unit and a precharge control relay, wherein the precharge control relay is connected to the precharge control unit, the first fuse, and the first heating control relay respectively; A resistor is provided between the precharge control relay and the first heating control relay, and the resistor is connected to both the precharge control relay and the first heating control relay.

4. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 2, characterized in that, The first battery unit also includes a first power supply control unit and a first power supply relay, wherein the first power supply relay is connected to the first power supply control unit, the first fuse, and the first DC / DC conversion unit respectively; The first battery unit further includes a total negative control unit and a total negative relay, wherein the total negative relay is connected to the total negative control unit and the parallel negative control relay respectively; The first battery unit also includes a first self-reset button, which is connected to the first fuse, the first DC / DC converter unit, and the first BMS unit respectively. A first diode is provided between the first BMS unit and the first DC / DC conversion unit, and the first diode is connected to the first BMS unit and the first DC / DC conversion unit respectively.

5. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 4, characterized in that, The first battery cell also includes a second diode, which is connected to the first BMS cell; The first battery unit also includes a first indicator light, which is connected to the first BMS unit; The first battery unit further includes a first charging / discharging positive terminal interface and a first charging / discharging negative terminal interface. One end of the first charging / discharging positive terminal interface is connected to the main positive relay, and one end of the first charging / discharging negative terminal interface is connected to the main negative relay.

6. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 2, characterized in that, The first BMS unit is provided with a first matching resistor, which is connected to the second battery unit; The first battery module includes several first battery units connected in series; the first battery unit is a cylindrical battery unit; the cylindrical battery unit is a lithium battery unit or a sodium battery unit.

7. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 6, characterized in that, The second battery unit further includes a second shunt, a second BMS unit, a third fuse, a second DC / DC converter, a second heating film, a second heating control relay, and a second heating control unit; the second battery module is connected to the second shunt, the second BMS unit, and the third fuse; the second BMS unit is connected to the second shunt, the third fuse, and the second DC / DC converter; the second heating film is connected to the second DC / DC converter and the second heating control relay; the second heating control relay is connected to the second heating control unit and the third fuse; the second shunt is connected to the second DC / DC converter and the parallel negative control relay; the third fuse is connected to the parallel positive control relay; and the second BMS unit is connected to the first BMS unit.

8. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 7, characterized in that, The second battery unit also includes a fourth fuse, one end of which is connected to the second DC / DC conversion unit, and the other end is connected between the second shunt and the parallel negative control relay; The second battery unit also includes a second power supply control unit and a second power supply relay, the second power supply relay being connected to the second power supply control unit, the third fuse, and the second DC / DC conversion unit respectively; The second battery unit also includes a second self-reset button, which is connected to the third fuse, the second DC / DC converter unit, and the second BMS unit.

9. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 7, characterized in that, A third diode is provided between the second BMS unit and the second DC / DC conversion unit, and the third diode is connected to both the second BMS unit and the second DC / DC conversion unit. The second battery unit also includes a second indicator light, which is connected to the second BMS unit.

10. The high-voltage fixed master-slave parallel boost fast charging system for high-performance computers according to claim 7, characterized in that, The second BMS unit is provided with a second matching resistor, which is connected to the first matching resistor; The second battery module includes several second battery units connected in series; the second battery unit is a cylindrical battery unit; the cylindrical battery unit is a lithium battery unit or a sodium battery unit.

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