A new mobile energy storage charging system

Abstract

The utility model discloses a novel mobile energy storage charging system, including mobile charging package and mobile charger, the mobile charging package includes circuit connection module one and electric signal connection module one, the circuit connection module one includes a plurality of groups of battery PACK, a plurality of groups battery PACK are mutually connected in series, the positive pole of the battery PACK of the most front end is connected in series connection fuse FU1, relay KM2, circuit breaker QF1 and charging gun seat in proper order, the negative pole of the battery PACK of the last end is connected in series shunt, relay KM3, circuit breaker QF1 and charging gun seat in proper order, and mobile charging package can be distributedly arranged after centralized charging, can arrange the position of battery module according to actual power requirement, improve the flexibility of battery use, and mobile charger dispatches as needed, can avoid the long time idle of charger, reduces its empty rate, reduces the waste of equipment resources, and saves the cost further.

Description

Technical Field

[0001] This utility model relates to the field of charging, and in particular to a novel mobile energy storage charging system. Background Technology

[0002] With the rapid popularization of new energy vehicles, the contradiction of insufficient charging infrastructure has become increasingly prominent, highlighting the following shortcomings:

[0003] Limited coverage of fixed charging stations: It is difficult to deploy fixed charging facilities in old residential areas, remote areas, and temporary venues (such as event venues and construction sites); resource shortage during peak hours: There are serious queues at charging stations in highway service areas and business districts during holidays; urgent need for emergency energy replenishment: There is a lack of rapid rescue solutions for scenarios such as vehicle breakdown due to low battery and power grid failure; limited development of vehicle-to-grid (V2G) interaction: Existing charging stations cannot flexibly dispatch energy storage resources to participate in power grid peak shaving.

[0004] Existing mobile charging solutions (such as charging vehicles) suffer from problems such as high cost, low efficiency, and limited functionality. There is an urgent need for a modular, schedulable, and multi-scenario adaptable mobile charging system. Utility Model Content

[0005] The purpose of this invention is to provide a novel mobile energy storage and charging system to solve the problem mentioned in the background art of the difficulty in flexibly scheduling energy storage resources for charging piles.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A novel mobile energy storage and charging system includes a mobile charging pack and a mobile charger. The mobile charging pack includes a circuit connection module and an electrical signal connection module. The circuit connection module includes several battery packs connected in series. The positive terminal of the frontmost battery pack is connected in series with a fuse FU1, a relay KM2, a circuit breaker QF1, and a charging gun socket. The negative terminal of the rearmost battery pack is connected in series with a shunt, a relay KM3, a circuit breaker QF1, and a charging gun socket. The fuse FU1 and the relay KM2 are connected in parallel with a pre-charging resistor connected in series with the relay KM1. The negative terminal of the pre-charging resistor is connected between the relay KM2 and the circuit breaker QF1. The mobile charging pack and the mobile charger are detachably connected via a plug-in connection.

[0008] Preferably, the circuit connection module one further includes a DC / DC power supply, a push-button switch ST1, a BMS master controller, and several sets of BMS slave controllers. The positive and negative terminals of the several sets of BMS slave controllers are connected in parallel to an external circuit. The DC / DC power supply has a port one and a port two. The positive terminal of port one is connected to the external circuit, and the negative terminal of port one is connected to the external circuit through the push-button switch ST1. The positive terminal of port two is connected between the fuse FU1 and the frontmost battery PACK, and the negative terminal of port two is connected between the shunt and the rearmost battery PACK. The positive and negative terminals of the BMS master controller are connected in parallel to the external circuit.

[0009] Preferably, the electrical signal connection module includes a resistor, a BMS master controller, several sets of BMS slave controllers, a shunt, relays KM1 and KM2, a charging gun socket, relay KM3, and a circuit breaker QF. Adjacent BMS slave controllers are electrically connected, and the last BMS slave controller is electrically connected to the resistor. The first BMS slave controller, shunt, relays KM1 and KM2, charging gun socket, relay KM3, and circuit breaker QF are electrically connected to the BMS master controller.

[0010] Preferably, the mobile charger includes a circuit connection module two and an electrical signal connection module two. The circuit connection module two includes an input charging gun head, a bidirectional DC / DC module, an output charging gun head, a DC / DC power supply one, an EMS charging / discharging controller, and a push-button switch ST2. The bidirectional DC / DC module has ports three and four. The positive and negative terminals of port three are connected to the positive and negative terminals of the input charging gun head, and the positive and negative terminals of port four are connected to the positive and negative terminals of the output charging gun head. The DC / DC power supply one has ports five and six. The positive and negative terminals of port five are connected in parallel between the input charging gun head and the bidirectional DC / DC module. The EMS charging / discharging controller has ports seven and eight. The positive and negative terminals of port six are connected to the positive and negative terminals of port seven, and the positive and negative terminals of port eight are connected in series with the push-button switch ST2. The input charging gun head and the charging gun socket are pluggable.

[0011] Preferably, the second electrical signal connection module includes an input charging gun head, a bidirectional DC / DC module, an output charging gun head, and an EMS charge / discharge controller. The input charging gun head, the bidirectional DC / DC module, and the output charging gun head are respectively connected to the EMS charge / discharge controller via electrical signals.

[0012] The beneficial effects of this utility model are:

[0013] 1. Mobile charging packs can be centrally charged and then distributed, allowing for flexible arrangement of battery module locations based on actual power demand, thus improving the flexibility of battery use. Mobile chargers can be scheduled on demand, avoiding long periods of idle time, reducing their idle rate, minimizing waste of equipment resources, and ultimately saving costs.

[0014] 2. It supports multi-mode coordinated charging and discharging, enabling charging piles to store energy for mobile charging packs and also allowing mobile charging packs to discharge electricity to new energy vehicles, meeting the power needs of vehicles. It also supports vehicle-to-vehicle (V2V) direct charging, providing a convenient way for power exchange between new energy vehicles. In addition, it has grid peak shaving (V2G) function, which helps to balance the peak and valley loads of the power grid, improve the stability and efficiency of power grid operation, and expand the scenarios and value of energy application. Attached Figure Description

[0015] Figure 1 The circuit diagram of the mobile charging pack according to an embodiment of this utility model is shown below.

[0016] Figure 2 This is a circuit diagram of a mobile charger according to an embodiment of the present invention. Detailed Implementation

[0017] 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.

[0018] See Figures 1-2 This utility model provides a novel mobile energy storage and charging system, including a mobile charging pack and a mobile charger. The mobile charging pack includes a circuit connection module and an electrical signal connection module. The circuit connection module includes several battery packs connected in series. The positive terminal of the frontmost battery pack is connected in series with a fuse FU1, a relay KM2, a circuit breaker QF1, and a charging gun socket. The negative terminal of the rearmost battery pack is connected in series with a shunt, a relay KM3, a circuit breaker QF1, and a charging gun socket. The fuse FU1 and the relay KM2 are connected in parallel with a pre-charging resistor connected in series with the relay KM1. The negative terminal of the pre-charging resistor is connected between the relay KM2 and the circuit breaker QF1. The mobile charging pack and the mobile charger are detachably connected via a plug-in connection.

[0019] The battery pack consists of cells connected in series and its main function is to store and release electrical energy.

[0020] The fuse (FU1) serves to protect the positive circuit and prevent circuit malfunctions caused by short circuits.

[0021] The current shunt divides the current in the main circuit to facilitate current data acquisition by the BMS master controller.

[0022] Among them, relay 1 (KM1) is a pre-charge relay, which is the switching element of the pre-charge circuit. During system startup, it closes before the main contactor (main relay), connecting the pre-charge resistor to the high-voltage circuit and limiting the initial charging current. After pre-charging is complete, the main relay closes, the pre-charge relay opens, and the system enters normal operating mode. This prevents the contacts from burning out due to arcing caused by high current when the main relay directly connects to the high voltage.

[0023] Among them, relay 2 (KM2) is a main positive relay that receives BMS main control and controls the on / off state of the positive terminal in a certain battery cluster circuit.

[0024] Among them, relay 3 (KM3) is a main negative relay that receives BMS main control and controls the on / off state of the negative terminal in a certain battery cluster circuit.

[0025] Among them, the pre-charge resistor limits surge current and stabilizes system voltage.

[0026] Among them, circuit breaker (QF1): protection and control circuit.

[0027] Among them, the charging gun socket is matched with the charging pile gun head and is used to connect to the charging pile gun head for power conversion and protocol docking.

[0028] Specifically, the circuit connection module one further includes a DC / DC power supply, a push-button switch ST1, a BMS master controller, and several sets of BMS slave controllers. The positive and negative terminals of the several sets of BMS slave controllers are connected in parallel to an external circuit. The DC / DC power supply has a port one and a port two. The positive terminal of port one is connected to the external circuit, and the negative terminal of port one is connected to the external circuit through the push-button switch ST1. The positive terminal of port two is connected between the fuse FU1 and the frontmost battery PACK, and the negative terminal of port two is connected between the shunt and the rearmost battery PACK. The positive and negative terminals of the BMS master controller are connected in parallel to the external circuit.

[0029] The BMS slave controller collects parameters such as voltage and current of the battery cell and transmits these parameters to the BMS master controller.

[0030] The BMS (Battery Management System) protects the safety of a specific battery cluster (preventing overcharging, over-discharging, and overheating) and ensures efficient and safe operation of the battery pack.

[0031] The DC / DC power supply converts the battery power into 12V, 24V, etc., to power auxiliary equipment.

[0032] The push-button switch (ST1) controls the auxiliary power supply circuit.

[0033] Specifically, the electrical signal connection module includes a resistor, a BMS master controller, several sets of BMS slave controllers, a shunt, relays KM1 and KM2, a charging gun socket, relay KM3, and a circuit breaker QF. Adjacent BMS slave controllers are electrically connected, and the last BMS slave controller is electrically connected to the resistor. The first BMS slave controller, shunt, relays KM1 and KM2, charging gun socket, relay KM3, and circuit breaker QF are electrically connected to the BMS master controller.

[0034] Specifically, the mobile charger includes a circuit connection module two and an electrical signal connection module two. The circuit connection module two includes an input charging gun head, a bidirectional DC / DC module, an output charging gun head, a DC / DC power supply one, an EMS charging / discharging controller, and a push-button switch ST2. The bidirectional DC / DC module has ports three and four. The positive and negative terminals of port three are connected to the positive and negative terminals of the input charging gun head, and the positive and negative terminals of port four are connected to the positive and negative terminals of the output charging gun head. The DC / DC power supply one has ports five and six. The positive and negative terminals of port five are connected in parallel between the input charging gun head and the bidirectional DC / DC module. The EMS charging / discharging controller has ports seven and eight. The positive and negative terminals of port six are connected to the positive and negative terminals of port seven, and the positive and negative terminals of port eight are connected in series with the push-button switch ST2. The input charging gun head and the charging gun socket are pluggable.

[0035] The input charging gun head is matched with the charging pile gun socket and is used to connect to the charging pile gun socket for power conversion and protocol docking.

[0036] The DC / DC power supply converts the battery power into 12V, 24V, etc., to power auxiliary equipment.

[0037] The bidirectional DC / DC module is a bidirectional energy conversion unit independent of the battery module, which achieves:

[0038] DC-DC step-up / step-down converter (e.g., 400V battery → 800V vehicle)

[0039] Charging / discharging mode switching (battery → vehicle, vehicle → battery, vehicle → grid, vehicle → vehicle)

[0040] Safety isolation control (insulation monitoring, overcurrent / voltage protection)

[0041] The EMS charge / discharge controller interfaces with the mobile battery pack and relevant national standards protocols for new energy vehicles, and controls the charging and discharging of the entire system.

[0042] Among them, the push-button switch (ST2) is used for charging and discharging control commands.

[0043] Specifically, the second electrical signal connection module includes an input charging gun head, a bidirectional DC / DC module, an output charging gun head, and an EMS charge / discharge controller. The input charging gun head, the bidirectional DC / DC module, and the output charging gun head are respectively connected to the EMS charge / discharge controller via electrical signals.

[0044] Working principle of this utility model:

[0045] When charging the mobile battery pack, first connect the external charging power source through the charging gun socket. To initiate the charging process, first close contactor KM2. Current flows through the pre-charging resistor into the battery pack, which consists of multiple battery cells (1#PACK, 2#PACK, N#PACK, etc.). The BMS (slave controller) monitors the voltage, current, temperature, and other parameters of the corresponding battery cells in real time and transmits the data to the BMS (master controller) via the communication line.

[0046] Once the BMS (Battery Management System) detects that the battery pack voltage has reached the appropriate range for pre-charging completion, it closes relay KM1 and simultaneously opens relay KM2, establishing the main charging circuit. Current directly charges the battery pack to ensure charging efficiency. During this process, the DC / DC power supply can be connected via control switch ST1 as needed to provide stable operating power to the BMS and other control circuits.

[0047] Throughout the charging process, FU1 acts as a fuse, blowing to cut off the circuit in case of an overcurrent fault, thus providing overcurrent protection. The shunt accurately detects the charging current and converts it into a voltage signal for the BMS (Battery Management System) master controller to collect and monitor. The circuit breaker QF1 can promptly disconnect from the charging gun socket in case of a serious fault or when charging needs to be stopped. The BMS master controller, as the core, receives data from each BMS slave controller and controls the on / off states of relays KM1 and KM2, circuit breaker QF1, and other devices based on charging parameters. It also communicates with the external charging system to ensure safe and efficient charging, and takes timely protective measures when the battery pack experiences abnormalities such as overvoltage, overcurrent, or overtemperature.

[0048] When it is necessary to charge a new energy vehicle, the input charging gun head of the mobile charger can be matched with the charging pile gun socket to connect to the charging pile gun socket, perform power conversion and protocol docking, and charge the new energy vehicle through the bidirectional DC / DC module and the output charging gun head.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new mobile energy storage charging system, comprising a mobile charging pack and a mobile charger, characterized in that: The mobile charging pack includes a circuit connection module and an electrical signal connection module. The circuit connection module includes several battery packs connected in series. The positive terminal of the frontmost battery pack is connected in series with a fuse FU1, a relay KM2, a circuit breaker QF1, and a charging gun socket. The negative terminal of the rearmost battery pack is connected in series with a shunt, a relay KM3, a circuit breaker QF1, and a charging gun socket. The fuse FU1 and the relay KM2 are connected in parallel with a pre-charging resistor connected in series with the relay KM1. The negative terminal of the pre-charging resistor is connected between the relay KM2 and the circuit breaker QF1. The mobile charging pack and the mobile charger are detachably connected via a plug-in design.

2. A novel mobile energy storage charging system as claimed in claim 1, wherein: The circuit connection module one also includes a DC / DC power supply, a push-button switch ST1, a BMS master controller, and several sets of BMS slave controllers. The positive and negative terminals of the several sets of BMS slave controllers are connected in parallel to an external circuit. The DC / DC power supply has a port one and a port two. The positive terminal of port one is connected to the external circuit, and the negative terminal of port one is connected to the external circuit through the push-button switch ST1. The positive terminal of port two is connected between the fuse FU1 and the frontmost battery PACK, and the negative terminal of port two is connected between the shunt and the rearmost battery PACK. The positive and negative terminals of the BMS master controller are connected in parallel to the external circuit.

3. A novel mobile energy storage charging system as claimed in claim 2, wherein: The electrical signal connection module includes a resistor, a BMS master controller, several sets of BMS slave controllers, a shunt, relays KM1 and KM2, a charging gun socket, relay KM3, and a circuit breaker QF. Adjacent BMS slave controllers are electrically connected, and the last BMS slave controller is electrically connected to the resistor. The first BMS slave controller, shunt, relays KM1 and KM2, charging gun socket, relay KM3, and circuit breaker QF1 are electrically connected to the BMS master controller.

4. A novel mobile energy storage charging system as claimed in claim 3, wherein: The mobile charger includes a second circuit connection module and a second electrical signal connection module. The second circuit connection module includes an input charging gun, a bidirectional DC / DC module, an output charging gun, a first DC / DC power supply, an EMS charge / discharge controller, and a push-button switch ST2. The bidirectional DC / DC module has ports three and four. The positive and negative terminals of port three are connected to the positive and negative terminals of the input charging gun, and the positive and negative terminals of port four are connected to the positive and negative terminals of the output charging gun. The first DC / DC power supply has ports five and six. The positive and negative terminals of port five are connected in parallel between the input charging gun and the bidirectional DC / DC module. The first EMS charge / discharge controller has ports seven and eight. The positive and negative terminals of port six are connected to the positive and negative terminals of port seven, and the positive and negative terminals of port eight are connected in series with the push-button switch ST2. The input charging gun and the charging gun socket are pluggable.

5. A novel mobile energy storage charging system as claimed in claim 1, wherein: The electric signal connection module two comprises an input charging gun head, a bidirectional DC / DC module, an output charging gun head and an EMS charging / discharging controller. The input charging gun head, the bidirectional DC / DC module and the output charging gun head are respectively connected with the EMS charging / discharging controller through electric signals.

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