阅读说明：本技术 储能电池簇系统及热管理方法 (Energy storage battery cluster system and thermal management method ) 是由 童辉 任志博 陈彬彬 于 2021-07-30 设计创作，主要内容包括：本发明涉及储能技术领域,特别涉及一种储能电池簇系统及热管理方法,系统包括：第一至第N电池插箱和控制盒,每个电池插箱内设置有对应的电池管理单元和热管理单元,且每个电池插箱设置有第一通信/供电接口和第二通信/供电接口,以通过通信/供电接口与相邻电池插箱互相通信；控制盒包括电池管理单元和热管理供电单元,控制盒设置有第一通信/供电接口和第二通信/供电接口,其中,第一通信/供电接口与第一电池插箱的第一通信/供电接口相连,第二控制接口与第N电池插箱的第二通信/供电接口相连。该系统将电池簇内通信及热管理接口集成为统一接口,集成度高,可以降本增效,并有效提高生产制造、安装维护时的便捷性,提升电池簇的安全性。(The invention relates to the technical field of energy storage, in particular to an energy storage battery cluster system and a thermal management method, wherein the system comprises: the system comprises first to Nth battery plug boxes and a control box, wherein each battery plug box is internally provided with a corresponding battery management unit and a corresponding thermal management unit, and is provided with a first communication/power supply interface and a second communication/power supply interface so as to communicate with the adjacent battery plug boxes through the communication/power supply interfaces; the control box comprises a battery management unit and a thermal management power supply unit, and is provided with a first communication/power supply interface and a second communication/power supply interface, wherein the first communication/power supply interface is connected with the first communication/power supply interface of the first battery inserting box, and the second control interface is connected with the second communication/power supply interface of the Nth battery inserting box. The system integrates the communication and heat management interfaces in the battery cluster into a unified interface, has high integration level, can reduce cost and improve efficiency, effectively improves the convenience in production, manufacture, installation and maintenance, and improves the safety of the battery cluster.)

1. An energy storage battery cluster system, comprising:

the battery management system comprises a first battery box, a second battery box, a third battery box, a fourth battery box, a fifth battery box, a sixth battery box and a sixth battery box, wherein the first battery box, the second battery box and the fourth battery box are respectively used for accommodating energy storage batteries; and

the control box comprises a battery management unit and a thermal management power supply unit, the control box is provided with a first communication/power supply interface and a second communication/power supply interface, the first communication/power supply interface is connected with the first communication/power supply interface of the first battery plug box, the second control interface is connected with the second communication/power supply interface of the Nth battery plug box to control the battery management unit and the thermal management unit of each battery plug box to execute management actions and supply power to the battery management unit and the thermal management unit.

2. The energy storage battery cluster system of claim 1, wherein the battery management unit and the thermal management unit of each battery box are connected to the corresponding first communication/power supply interface and the second communication/power supply interface.

3. The energy storage battery cluster system of claim 1, wherein in the communication mode, the control box sequentially communicates the first through nth battery bays in a forward daisy-chain communication manner or in a reverse daisy-chain communication manner.

4. The energy storage battery cluster system of claim 3, wherein in a single failure mode, the control box is in communication with a communication/power interface connecting the non-failed side of any of the first through Nth battery bays.

5. The energy storage battery cluster system of claim 1, wherein the control box comprises a plurality of power supply lines connected to the communication/power supply interface, and in the power supply mode, the control box supplies power to the first to nth battery sockets through one or more power supply lines.

6. The energy storage battery cluster system of claim 5, wherein in a single failure mode, a power supply line between the communication/power supply interface on the non-failure side of any one of the first to Nth battery boxes and the communication/power supply interface of the control box forms a power supply loop.

7. A method of thermal management of an energy storage battery cluster system according to any of claims 1-6, characterized by the steps of:

receiving operating parameters of each battery plug box in the first battery plug box to the Nth battery plug box;

generating a thermal management instruction according to the operating parameters and the target temperature of each battery plug box; and

and controlling the battery management unit and the thermal management unit of each battery plug-in box to execute management actions according to the thermal management instruction.

8. The method of managing of claim 7, further comprising:

and communicating with the first to Nth battery plug boxes through a first communication/power supply interface and a second communication/power supply interface of the control box so as to receive the operating parameters of each battery plug box.

9. The method of managing according to claim 8, wherein the communicating with the first to nth battery boxes through the first and second communication/power supply interfaces of the control box comprises:

the control box sequentially communicates the first to Nth battery plug boxes in a forward daisy chain communication mode or a reverse daisy chain communication mode.

10. The method for managing according to claim 9, further comprising:

and under the single failure mode, communicating with the control box through a communication/power supply interface which is connected with the non-failure side of any one of the first battery plug box to the Nth battery plug box.

Technical Field

The invention relates to the technical field of energy storage, in particular to an energy storage battery cluster system and a thermal management method.

Background

Currently, a plurality of battery sockets are usually included in a battery cluster, and each battery socket includes the following interfaces: power interface (including positive and negative pole), communication interface, second grade BMS power supply interface, and thermal management interface etc..

However, the interfaces of each battery plug box are many, the cost is high, and the battery plug box is complicated in installation, especially when wiring, and once the battery plug box is connected in error, a battery cluster can not work, even certain potential safety hazard is brought, and a urgent need exists for solution.

Disclosure of Invention

In view of this, the present invention is directed to an energy storage battery cluster system, which integrates a communication and thermal management interface in a battery cluster into a unified interface, has high integration level, can reduce cost and improve efficiency, effectively improves convenience in production, manufacture, installation and maintenance, and improves safety of the battery cluster.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an energy storage battery cluster system comprising:

the battery management system comprises a first battery box, a second battery box, a third battery box, a fourth battery box, a fifth battery box, a sixth battery box and a sixth battery box, wherein the first battery box, the second battery box and the fourth battery box are respectively used for accommodating energy storage batteries; and

the control box comprises a battery management unit and a thermal management power supply unit, the control box is provided with a first communication/power supply interface and a second communication/power supply interface, the first communication/power supply interface is connected with the first communication/power supply interface of the first battery plug box, the second control interface is connected with the second communication/power supply interface of the Nth battery plug box to control the battery management unit and the thermal management unit of each battery plug box to execute management actions and supply power to the battery management unit and the thermal management unit.

Further, the battery management unit and the thermal management unit of each battery box are connected with the corresponding first communication/power supply interface and the second communication/power supply interface.

Further, the battery management unit and the thermal management unit of each battery box are connected with the corresponding first communication/power supply interface and the second communication/power supply interface.

Further, in a single failure mode, the control box is communicated with a communication/power supply interface connecting the non-failed side of any one of the first to Nth battery plug boxes.

Further, the control box comprises a plurality of power supply lines connected with the communication/power supply interface, and in the power supply mode, the control box supplies power to the first to nth battery plug boxes through one or more power supply lines.

Further, in a single failure mode, a power supply line between a communication/power supply interface on the non-failure side of any one of the first to nth battery plug boxes and a communication/power supply interface of the control box forms a power supply loop.

Compared with the prior art, the energy storage battery cluster system has the following advantages:

according to the energy storage battery cluster system, the communication interface and the thermal management interface in the battery plug box and the control box are integrated into a unified interface, so that the integration of the communication and thermal management interfaces in the battery cluster is realized, the integration level is high, the number of the interfaces of the battery cluster is effectively reduced, the production cost of the battery cluster can be effectively reduced, the production efficiency is improved, the convenience in production, manufacturing, installation and maintenance can be effectively improved, the connection of the battery plug box is convenient and quick, the connection errors and the installation risks are avoided, and the safety of the battery cluster is improved.

The invention also aims to provide a thermal management method of the energy storage battery cluster system, which can perform thermal management by utilizing a unified interface integrated with communication and thermal management in the battery cluster, has high integration level of the interface in the battery cluster, can reduce cost and improve efficiency, effectively improves convenience in production, manufacture, installation and maintenance, and improves the safety of the battery cluster.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a thermal management method of an energy storage battery cluster system comprises the following steps:

receiving operating parameters of each battery plug box in the first battery plug box to the Nth battery plug box;

generating a thermal management instruction according to the operating parameters and the target temperature of each battery plug box; and

and controlling the battery management unit and the thermal management unit of each battery plug-in box to execute management actions according to the thermal management instruction.

Further, still include:

and communicating with the first to Nth battery plug boxes through a first communication/power supply interface and a second communication/power supply interface of the control box so as to receive the operating parameters of each battery plug box.

Further, the first communication/power supply interface and the second communication/power supply interface through the control box communicate with the first to nth battery boxes, including:

the control box sequentially communicates the first to Nth battery plug boxes in a forward daisy chain communication mode or a reverse daisy chain communication mode.

Further, still include:

and under the single failure mode, communicating with the control box through a communication/power supply interface which is connected with the non-failure side of any one of the first battery plug box to the Nth battery plug box.

Compared with the prior art, the energy storage battery cluster system and the heat management method of the energy storage battery cluster system have the same advantages, and are not described herein again.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic block diagram of an energy storage battery cluster system according to an embodiment of the invention;

fig. 2 is a schematic structural diagram of an energy storage battery cluster system according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a control box according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a battery box according to an embodiment of the invention;

fig. 5 is a schematic diagram of a communication link of an energy storage battery cluster system according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating a connection failure of a battery plug box of the energy storage battery cluster system according to an embodiment of the invention;

FIG. 7 is a schematic illustration of a communication connection failure between the second and third battery bays in accordance with an embodiment of the present invention;

fig. 8 is a schematic diagram of a power supply link of an energy storage battery cluster system according to an embodiment of the present invention;

FIG. 9 is a schematic illustration of a power connection failure between the second and third battery bays in accordance with an embodiment of the present invention;

fig. 10 is a flowchart of a thermal management method of an energy storage battery cluster system according to an embodiment of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

At present, power and communication connection interfaces of each battery plug box in a battery cluster are more, and the battery plug boxes are more complicated in installation, particularly wiring. If the connection is wrong, the battery cluster can be out of work or a safety risk exists. Therefore, the invention provides an energy storage battery cluster system, which aims to simplify the interface of battery plug boxes, reduce the types of connection harnesses among the battery plug boxes, reduce the production cost, increase the production efficiency, reduce the installation risk and the cost and the like.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 is a block schematic diagram of an energy storage battery cluster system according to an embodiment of the invention.

As shown in fig. 1, an energy storage battery cluster system 10 according to an embodiment of the invention includes: first to nth battery cradles 100 and a control box 200.

The battery management system comprises a first battery box 100, a second battery box 100, a third battery box and a fourth battery box, wherein the first battery box 100, the second battery box and the third battery box are used for placing energy storage batteries; the control box 200 includes a battery management unit and a thermal management power supply unit, and the control box is provided with a first communication/power supply interface and a second communication/power supply interface, where the first communication/power supply interface is connected to the first communication/power supply interface of the first battery box, and the second control interface is connected to the second communication/power supply interface of the nth battery box, so as to control the battery management unit and the thermal management unit of each battery box to execute management actions and supply power to the battery management unit and the thermal management unit.

Therefore, the embodiment of the invention integrates the communication and the heat management in the battery cluster, simplifies the design of the interface in the battery cluster, reduces the number of the interfaces of the battery plug-in box, can greatly reduce the production, installation and maintenance cost, improves the production efficiency, and effectively improves the convenience in production, manufacture, installation and maintenance.

Specifically, as shown in fig. 2, the control box in the battery cluster and the n battery plug boxes complete internal communication and thermal management connection of the battery cluster through a hand-in-hand connection mode, so that an electrical connection is realized, cost is reduced, and efficiency is improved. Among them, the battery box _1# to the battery box _ N # shown in fig. 2 are the first to nth battery boxes.

As shown in fig. 3, the control box includes a secondary battery management unit BCU and a thermal management power supply unit TMS, and outputs two interfaces to an interface 1 and an interface 2, respectively, where the interface 1 shown in fig. 3 is a first communication/power supply interface of the control box, and the interface 2 is a second communication/power supply interface of the control box. The interface 1 is integrated with a forward communication line and a power supply bus 1, and the interface 2 is integrated with a reverse communication line and a power supply bus 2, so that the communication interface and the thermal management interface in the control box can be integrated into a unified interface, the interface design can be effectively simplified, the number of interfaces is reduced, the integration level is high, and the cost is saved.

As shown in fig. 4, taking a battery box _1# as an example, the battery box includes a primary battery management unit BMU _1# and a thermal management unit TMS _1# which are connected to an interface 1 and an interface 2, respectively, and each interface includes communication and thermal management power supply, where the interface 1 shown in fig. 4 is a first communication/power supply interface provided in the battery box, and the interface 2 is a second communication/power supply interface provided in the battery box. The interface 1 is integrated with the communication line 1 and the power supply line 1, the interface 2 is integrated with the communication line 2 and the power supply line 2, and all the battery plug boxes adopt the same design, so that the communication interface and the thermal management interface in the battery plug box are integrated into a unified interface, the interface design can be effectively simplified, the number of interfaces is reduced, the integration level is high, and the cost is saved.

In the present embodiment, in the communication mode, the control box 200 sequentially communicates the first to nth battery bays 100 in a forward daisy-chain communication manner or a reverse daisy-chain communication manner

It should be understood that, as shown in fig. 5, loop daisy chain communication is adopted between the BCUs and the BMUs in the battery cluster system, and the loop daisy chain communication includes a forward daisy chain communication mode and a reverse daisy chain communication mode, where the forward daisy chain communication mode refers to a mode in which the first to nth battery plug boxes sequentially communicate, and the reverse daisy chain communication mode refers to a mode in which the nth to first battery plug boxes sequentially communicate, and in the normal operation mode, the embodiment of the present invention may adopt any communication mode to communicate. For example, in the normal operating mode, the BCU may communicate using forward communication, i.e., forward daisy-chain communication.

In the present embodiment, in the single failure mode, the control box 200 communicates through the communication/power supply interface connecting the non-failed side of any one of the first to nth battery cradles 100.

It can be understood that when the ring shape of the first to nth battery plug boxes is broken, that is, when there is a communication failure between any adjacent battery plug boxes, the embodiment of the present invention simultaneously adopts the forward daisy chain communication manner and the reverse daisy chain communication manner for communication, so that normal communication can be still performed in a single failure mode, and the reliability of communication can be ensured.

For example, if the ring is broken and a single fault occurs, for example, as shown in fig. 6 and 7, if the communication between BMU _2# and BMU _3# fails, the BCU can transmit the node signals of BMU _3# to BMU _ n # to the BCU through a reverse path in a reverse daisy-chain communication manner, and simultaneously transmit the node signals of BMU _3# and BMU _ n # to the BCU together with the node signals of BMU _1# and BMU _2# in a forward daisy-chain manner, so that it can be effectively ensured that the BMU node signals of all battery boxes in the system are uploaded to the BCU, the influence of the communication failure between BMU _2# and BMU _3# on the communication of the whole system is avoided, and the communication reliability of the system is effectively increased.

In the present embodiment, the control box 100 includes a plurality of power supply lines connected to the communication/power supply interface, and in the power supply mode, the control box supplies power to the first to nth battery bays 100 through one or more power supply lines.

The plurality of power supply lines may include a power supply bus 1 and a power supply bus 2. The control box 100 may supply the first to nth battery boxes 100 through the power supply bus 1 and/or the power supply bus 2. For example, the embodiment of the invention can perform double-path power supply by using the power supply bus 1 and the power supply bus 2 in the power supply mode, and can effectively increase the reliability of system power supply.

Taking two-way power supply as an example, as shown in fig. 8, in a normal operating mode, the two-way power supply bus output by the thermal management power supply unit TMS in the control box supplies power to the thermal management unit TMS in each battery box in the battery cluster through a hand.

In the present embodiment, in the single failure mode, the power supply line between the communication/power supply interface on the non-failed side of any one of the first to nth battery boxes 100 and the communication/power supply interface of the control box 200 constitutes a power supply loop.

It can be understood that when the ring shape of the first to nth battery plug boxes is broken, that is, when the connection of the power supply line between any adjacent battery plug boxes fails, the battery cluster system can still reliably operate when a single fault exists in the system because the embodiment of the invention adopts double-path power supply.

For example, as shown in fig. 9, when the connection between the battery box _2# and the battery box _3# fails and a single failure occurs, the power supply bus bar separately supplies power, and the power supply bus bar 1 supplies power to the thermal management units TMS _1# and TMS _2# of the battery box through the interface connection; the power supply bus 2 is connected through an interface and supplies power to the heat management units TMS _3# -TMS _ n # of the battery plug-in box; therefore, the power can still be normally supplied when the connection between the battery plug box _2# and the battery plug box _3# is failed, the influence of line interruption on power supply is avoided, and the battery cluster system can still reliably work when a single fault exists in the system.

According to the energy storage battery cluster system provided by the embodiment of the invention, the communication interface and the thermal management interface in the battery plug box and the control box are integrated into a unified interface, so that the integration of the communication and thermal management interfaces in the battery cluster is realized, the integration level is high, the number of the interfaces of the battery cluster is effectively reduced, the production cost of the battery cluster can be effectively reduced, the production efficiency is improved, the convenience in production, manufacturing, installation and maintenance can be effectively improved, the connection of the battery plug box is convenient and quick, the connection error and the installation risk are avoided, and the safety of the battery cluster is improved.

Further, as shown in fig. 10, an embodiment of the present invention further discloses a thermal management method of the energy storage battery cluster system according to the above embodiment, including the following steps:

step S101, receiving operation parameters of each of first to Nth battery plug boxes;

step S102, generating a thermal management instruction according to the operation parameters and the target temperature of each battery plug box;

the target temperature may be specifically set according to an actual thermal management requirement, and is not specifically limited.

And step S103, controlling the battery management unit and the thermal management unit of each battery plug-in box to execute management actions according to the thermal management instruction.

Further, the method of the embodiment of the present invention further includes: and communicating with the first to Nth battery plug boxes through the first communication/power supply interface and the second communication/power supply interface of the control box so as to receive the operation parameters of each battery plug box.

Further, the first to nth battery boxes are communicated with through a first communication/power supply interface and a second communication/power supply interface of the control box, and include: the control box communicates the first to Nth battery plug boxes in a forward daisy chain communication mode or a reverse daisy chain communication mode in sequence.

Further, the method of the embodiment of the present invention further includes: and under the single failure mode, the control box is communicated with the communication/power supply interface of the non-failure side of any one of the first battery plug boxes, the second battery plug box and the Nth battery plug box.

It should be noted that a specific implementation manner of the thermal management method of the energy storage battery cluster system according to the embodiment of the present invention is similar to that of the energy storage battery cluster system, and in order to reduce redundancy, details are not described here.

According to the heat management method of the energy storage battery cluster system, the unified interface integrating communication and heat management in the battery cluster can be used for heat management, the integration level of the interface in the battery cluster is high, cost reduction and efficiency improvement can be achieved, convenience in production, manufacturing, installation and maintenance is effectively improved, and safety of the battery cluster is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.