Distributed high dynamic battery energy seamless routing system

Abstract

The purpose of this invention is to provide a distributed, high-dynamic battery energy seamless routing system, belonging to the field of seamless routing. It includes a main control module, a power routing hub, and a battery underlying protection module. The battery underlying protection module internally houses an analog front-end chip and a back-to-back solid-state switch array. The power routing hub internally houses a high-current busbar and an I... 2 The C-type multiplexer connects the high-current outputs of all battery-level protection modules to a high-current busbar, and the communication lines of all battery-level protection modules are connected to the I-type multiplexer. 2 C multiplexer, the main control module connects to I 2 The C-type multiplexer communicates hierarchically with the underlying protection modules of each battery. The main control module of this invention can communicate with the same I-type multiplexer. 2 The underlying chip at address C performs dynamic channel selection, completely breaking the communication bottleneck of multiple battery packs in parallel and completely bypassing the main control I. 2 The communication delay of C-polling means that if any underlying battery malfunctions, the highest priority asynchronous interrupt of the main controller will be triggered immediately, resulting in an exponential improvement in system security.

Description

Technical Field

[0001] The present invention relates to a high-frequency energy dispatching device for an integrated starter generator (ISG) in an internal combustion engine compound turbocharging system, specifically a seamless routing system. Background Technology

[0002] In modern internal combustion engine compound turbocharging systems, the integrated starter-generator (ISG) needs to switch frequently and dynamically between electric motor mode (such as low-condition intake compensation) and generator mode (such as high-condition energy recovery). To meet high power demands, multiple battery packs are typically connected in parallel to form an energy storage system.

[0003] Existing battery management systems often use centralized mechanical relays as charge / discharge switches. However, mechanical relays are extremely slow to respond and prone to arcing, making them unsuitable for the microsecond-level high-frequency switching conditions of ISG motors. If solid-state switches (such as MOSFETs) are used to replace relays, serious engineering problems arise when multiple battery packs are connected in parallel: firstly, communication conflicts are easily generated when multiple underlying protection chips share the bus. 2 The first issue is address conflict, which leads to communication failure; the second issue is polling delay. The main control system reads the status of each battery pack through polling. When faced with sudden overcurrent or short circuit at the underlying level, the communication delay of software polling can easily cause the best protection window to be missed, resulting in the breakdown of solid-state switches. Summary of the Invention

[0004] The purpose of this invention is to provide a distributed, highly dynamic, seamless battery energy routing system that can solve the problem of high-frequency scheduling and protection response for multiple parallel battery groups.

[0005] The objective of this invention is achieved as follows: This invention discloses a distributed, high-dynamic, seamless battery energy routing system, characterized by comprising a main control module, a power routing hub, and battery underlying protection modules. Each battery underlying protection module is connected to a battery pack. The battery underlying protection module internally houses an analog front-end chip and a back-to-back solid-state switch array. The power routing hub internally houses a high-current busbar and an I / O circuit. 2 The C-type multiplexer connects the high-current outputs of all battery-level protection modules to a high-current busbar, and the communication lines of all battery-level protection modules are connected to the I-type multiplexer. 2 C multiplexer, the main control module connects to I 2 The C-type multiplexer communicates hierarchically with the underlying protection modules of each battery.

[0006] The present invention may also include: 1. All alarm pins of the analog front-end chips are configured as open-drain outputs and are physically connected in parallel as a global alarm bus on the hardware wiring of the power routing hub, and are also connected in parallel to the same external interrupt pin of the main control module.

[0007] 2. The main control module has built-in anti-loop timing logic. When the charging and discharging modes of the ISG motor are switched at high frequency, the first disconnection and then the second connection scheduling strategy is enforced to prevent the battery packs in different states from being directly connected in parallel and generating transient surges.

[0008] The advantages of this invention are: 1. Through the I of the power routing hub 2 C multiplexer, the main control module can process the same I 2 The underlying chip at address C performs dynamic channel selection, which completely breaks the communication bottleneck of multiple battery packs in parallel and enables flexible reading of battery status. 2. By utilizing open-drain or logic connections, alarm signals from the underlying state machine are directly connected in parallel, completely bypassing the main control I / O. 2 The communication delay of C-polling immediately triggers the highest priority asynchronous interrupt of the main controller once any underlying battery malfunctions, resulting in an exponential improvement in system security. 3. The main controller, in conjunction with the high-frequency response characteristics of the solid-state switch, executes the first-to-break (BBM) safety timing sequence, realizing seamless and surge-free routing and scheduling of macroscopic energy when the ISG motor switches between assist discharge and regenerative charging modes. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the system structure of the present invention. Detailed Implementation

[0010] The invention will now be described in more detail with reference to the accompanying drawings: Combination Figure 1 The system of this invention includes a main control module 100, a power hub 200, and multiple battery protection modules (PCMs) 300. The main control module 100 includes a microcontroller 101 and an external interrupt pin 102; the power hub 200 has an onboard high-current busbar 201 and an I / O pin. 2 C-multiplexer 202; each PCM 300 includes an analog front-end (AFE) chip 301 and a back-to-back solid-state switch array 302 arranged on the positive side of the battery.

[0011] The high-voltage output terminals of each battery pack are physically connected to the high-current busbar 201 of the power routing hub 200 through the solid-state switch array 302 inside the PCM 300, thereby realizing the physical collection of power energy.

[0012] On the one hand, regarding the communication scheduling mechanism, the main I / O pin of the microcontroller 101... 2 C bus connected to I 2The input terminal of the multiplexer 202 is connected to the AFE chip 301 within the multiple PCM 300, while the communication terminals of these chips are connected to different downlink channels of the multiplexer. The microcontroller 101 establishes communication links with different AFE chips sequentially by sending channel switching commands, effectively avoiding factory-installed I / O errors. 2 The communication conflict caused by C address fixing was resolved, enabling accurate polling of data from multiple battery packs.

[0013] On the other hand, regarding the hardware asynchronous protection mechanism, the hardware alarm pins of all AFE chips 301 within the PCM 300 are configured as open-drain outputs (Active-Low). These alarm pins are physically connected in parallel when connected to the power routing hub 200, and are collectively connected to the external interrupt pin 102 of the microcontroller 101. In the event of extreme conditions such as a sudden short circuit, any AFE chip can actively pull the bus level low, bypassing the microcontroller's regular software polling cycle, instantly triggering the interrupt state machine, and executing the highest priority system protection.

[0014] Furthermore, when the ISG motor switches between "low-condition discharge assist" and "high-condition charging recovery," to prevent the battery packs with excessive voltage differentials from directly connecting in parallel and generating destructive loop currents, the microcontroller 101 controls the solid-state switch array 302 to enforce a Break-Before-Make timing sequence. That is: first, a command is sent to disconnect all currently active solid-state switch arrays → a timer is started to perform a dead-time delay to wait for the current to return to zero → based on current needs, a dynamic optimization is performed, and a command is sent to turn on the solid-state switch array corresponding to the target battery pack, thereby achieving efficient and safe energy routing for the composite turbocharger system.

Claims

1. A distributed, highly dynamic, seamless battery energy routing system, characterized by: It includes a main control module, a power routing hub, and a battery underlying protection module. Each battery underlying protection module is connected to a battery pack. The battery underlying protection module internally houses an analog front-end chip and a back-to-back solid-state switch array. The power routing hub internally houses a high-current busbar and an I / O shield. 2 The C-type multiplexer connects the high-current outputs of all battery-level protection modules to a high-current busbar, and the communication lines of all battery-level protection modules are connected to the I-type multiplexer. 2 C multiplexer, the main control module connects to I 2 The C-type multiplexer communicates hierarchically with the underlying protection modules of each battery.

2. The distributed high-dynamic battery energy seamless routing system according to claim 1, characterized in that: Each analog front-end chip alarm pin is configured as an open-drain output and is physically connected in parallel as a global alarm bus on the hardware wiring of the power routing hub, and is also connected in parallel to the same external interrupt pin of the main control module.

3. The distributed high-dynamic battery energy seamless routing system according to claim 1, characterized in that: The main control module has built-in anti-loop timing logic. When the charging and discharging modes of the ISG motor are switched at high frequency, it forces the execution of a first-disconnect-then-connect scheduling strategy: first disconnect the current solid-state switch array → dead-time delay → turn on the target solid-state switch array, in order to prevent the battery packs in different states from being directly connected in parallel and generating transient surges.

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