CN102842936B - Distributed battery power supply device and method - Google Patents

Abstract

The invention relates to the field of electric power supply, in particular to a distributed battery power supply device for supplying power for a data center. The data center comprises a plurality of machine frames, and servers respectively arranged on the machine frames; the power supply device comprises direct current power supply units and battery modules respectively arranged on the machine frames; on each machine frame, the direct current power supply unit is connected with the server and the battery module respectively, the server and the battery module are communicated with each other via a communication circuit, and the direct current power supply unit supplies power for the server and supplies a charging power source for the battery module; the battery modules are inter-connected and communicated with each other via the communication circuits. In the invention, energy storage batteries are disassembled and deployed onto each machine frame of the data center in a distributed way, and share machine frames with the servers, so that the battery modules can supply power for the servers directly, thus the power supply efficiency of the power supply system of the data center, and the space utilization rate of the data center are effectively improved.

Description

Distributed battery electric supply installation and method

Technical field

The present invention relates to power supply field, relate in particular to a kind of distributed battery electric supply installation that is used to data center's power supply.

Background technology

Along with ICT (information and communication technology) development and requirement increases, in recent years, global data center quantity rapidly increases.Global data center total amount has exceeded 3,700,000 at present, wherein, the growth rate of medium-sized data center (approximately 500 square meters are to 2000 square meters) and large enterprise's DBMS center (more than 2000 square meters) is higher than average growth rate, these data centers are mainly used in large enterprise, as the industry such as telecommunications, finance, being also included as SME users provides the hosting data center of service.

Be accompanied by the develop rapidly of data center, power supply reliability problem, energy consumption problem and space problem are accompanied by its development always.Operator of data center urgently finds the effective scheme addressing these problems.

In data center, ensure that at present power supply reliability is mainly to rely on uninterruption power source (UPS) to realize, still, there is following problem in this mode:

1, traditional UPS is owing to powering and needing electric main to arrive DC converting data center server, and direct current changes two steps to exchanging, and has the energy loss of 15% left and right in twice conversion;

2, the centralized fashion of ups system takies separately the large quantity space of data center, causes the decline in benefits of data center's unit space;

3, traditional UPS adopts lead-acid battery energy storage, needs artificial periodic maintenance, and failure rate is high, maintenance cost is high.

Summary of the invention

(1) technical problem that will solve

The object of the present invention is to provide a kind of distributed battery electric supply installation, for solving, current data center ups system power supplying efficiency is low, large problem takes up room.

(2) technical scheme

Technical solution of the present invention is as follows:

A kind of distributed battery electric supply installation, is used to data center's power supply, and described data center comprises multiple rack management modules and is arranged at the server management module in each rack management module; Described electric supply installation comprises the DC power supply unit administration module and the battery module that are arranged in each rack management module; In same rack management module, described DC power supply unit administration module is connected with server management module and battery module respectively, and between described server management module and battery module, communicate by communication line administration module, described DC power supply unit administration module provides charge power supply for server power supply and for described battery module; Between each battery module, interconnect, and communicate by communication line administration module between each battery module, each battery module (103) can be server (101) power supply in any frame (104).

Preferably, described battery module comprises battery management system and battery pack, described battery pack is connected with DC power supply unit administration module, described battery management system is connected respectively with described server management module and battery pack, with the power supply to server management module and obtain charging from DC power supply unit administration module according to described server management module power consumption and described battery capacity control.

Preferably, described battery management system comprises processing unit and coupled communication unit, measuring unit and performance element; Described measuring unit is connected with battery pack and server management module respectively, measures in real time battery capacity and server management module need for electricity and the information of obtaining is sent to described processing unit; The information that described processing unit sends according to described processing unit, sending controling instruction is to described performance element, and described performance element is connected with battery pack and DC power supply unit administration module, controls discharging and recharging of battery; Described communication unit is connected with server management module by communication line administration module, receives or transmission information.

Preferably, described DC power supply unit administration module comprises the processor of the described diverter switch state of AC/DC convertor, transformer, diverter switch, control connecting successively, the commercial power interruption detector being connected with processor, when described commercial power interruption detector detection civil power is logical, civil power is transformed to direct current through the described AC/DC convertor of crossing, thereby to control described direct current be server management module power supply or be described charging battery module simultaneously by processor control diverter switch; When described commercial power interruption detector detects commercial power interruption, be server management module power supply thereby processor control diverter switch makes battery pack.

Preferably, described electric supply installation also comprises the administration module for managing each battery module power supply, between described administration module and each battery module, communicates by letter line management module.

A kind of distributed power supply method of described distribution type power-supplying apparatus, comprises step:

S1: battery module detects the wherein battery capacity C of battery pack in real time _ithe power consumption L of (i ∈ Θ) and server _i(i ∈ Θ), and testing result is sent to administration module; The numbering that wherein i is each frame, Θ is the set of all rack management module compositions;

S2: administration module is done according to testing result as judged,

If C _i-L _i>=C _th, the server management module on frame i is powered by the battery module in this frame; Wherein, C _thfor this frame lower bound of capacity threshold value that pond module can discharge that powers on;

If C _i-L _i< C _th, the server management module on frame i is C by the battery module amount of power supply in this frame _i-C _th, administration module calculates required extra amount of power supply Δ L _i=L _i-C _i+ C _th;

S3: administration module is by all C that satisfy condition _i-L _i< C _thframe i be recorded in set Ψ in;

S4: definition frame j, the battery module on j ∈ (Θ-Ψ), except be in this frame server management module power supply, is x for gathering the electric weight that on Ψ mid frame, server management module provides _j, j ∈ (Θ-Ψ);

S5: administration module basis $\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}{x}_j=\underset{i\&Element;\mathrm{\&Psi;}}{\mathrm{\&Sigma;}}{\mathrm{\&Delta;L}}_i,x_j\&GreaterEqual;0,\&ForAll;j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})$ Control frame j, the battery module power supply on j ∈ (Θ-Ψ).

Preferably, described step S5 is specially:

A, administration module computer rack j, the upper extra loss of supply rate of battery module of j ∈ (Θ-Ψ), $\frac{x_j}{C_j-L_j-C_{\mathrm{th}}},j\&Element;\mathrm{\&Theta;}-\mathrm{\&Psi;};$

B, administration module definition cooperate optimization model,

$\min :\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}\frac{x_j}{C_j-L_j-C_{\mathrm{th}}}$

$s.t.\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}{x}_j=\underset{i\&Element;\mathrm{\&Psi;}}{\mathrm{\&Sigma;}}{\mathrm{\&Delta;L}}_i;$ $x_j\&GreaterEqual;0,\&ForAll;j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})$

C, administration module solve x _j, j ∈ (Θ-Ψ);

D, administration module (105) are by solved x _j, j ∈ (Θ-Ψ) feeds back to each frame j, the battery module (103) of j ∈ (Θ-Ψ);

E, battery module (103) are according to x _j, j ∈ (Θ-Ψ) controls frame j, battery module (103) power supply on j ∈ (Θ-Ψ).

Preferably, in described step e, be specially: frame j, the battery module (103) on j ∈ (Θ-Ψ) detects the capacity of each cell in battery pack in real time by the measuring unit in battery management system, and processing unit is according to x _jwith the volume controlled battery switch array of each cell, the compound mode of battery pack in the battery module (103) of dynamically recombinating, controls power supply.

(3) beneficial effect

The present invention passes through energy-storage battery component solution, and be deployed to distributed way in each frame of data center, with server common frame, battery module is directly server power supply, thereby effectively improves the power supplying efficiency of data center's electric power system and the space availability ratio of data center.

Brief description of the drawings

Fig. 1 is the schematic diagram of a kind of distributed battery electric supply installation of the present invention;

Fig. 2 is the schematic diagram of battery module in Fig. 1;

Fig. 3 is the schematic diagram of DC power supply unit in Fig. 1;

Fig. 4 is the flow chart that in Fig. 1, administration module distributes power supply;

Fig. 5 is the flow chart of each battery module method of supplying power to of administration module cooperate optimization in Fig. 1;

Fig. 6 is the compound mode controllable switching array schematic diagram of battery pack in Fig. 2.

In figure, 101: server; 102: DC power supply unit; 103: battery module; 104: frame; 105: administration module; 106: DC bus; 107; Communication line; 6: gate-controlled switch.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described further.

Embodiment 1

A kind of distributed battery electric supply installation as shown in Figure 1, is used to data center's power supply, and data center comprises multiple frames 104, is arranged at the server 101 in each frame 104; Distributed battery electric supply installation comprises the DC power supply unit 102 and the battery module 103 that are arranged in each frame 101, DC power supply unit 102 is connected by DC bus 106 with server 101 and battery module 103 respectively, in the time that mains-supplied is normal, DC power supply unit 102 is converted to direct current by electric main and powers to server, and charges for battery module 103; In the time of commercial power interruption, in each frame, battery module 103 will independently judge power down and power to server 101; Between each battery module 103 and with server 101, communicate by communication line 107, any one battery module 103 can be to server 101 direct current supplys in any frame.

Battery module 103 as shown in Figure 2: battery module 103 comprises battery management system and battery pack, battery pack is preferably lithium battery group, and lithium battery group is high with respect to traditional lead-acid battery group voltage platform, and energy density is high, long service life, the maintenance needing is few.Battery pack is connected with DC power supply unit 102, and battery management system is connected respectively with server 101 and battery pack, with the power supply to server 101 and obtain charging from DC power supply unit 102 according to server 101 power consumptions and battery capacity control.Number of batteries, the battery capacity of battery pack are determined according to server 101 needs for electricity.

Battery management system comprises as shown in Figure 2: processing unit and the communication unit, measuring unit and the performance element that are connected with processing unit; Measuring unit is connected with battery pack and server 101 respectively, measures in real time battery capacity and server 101 needs for electricity and measurement result is sent to processing unit; Processing unit is according to measurement result sending controling instruction to performance element, and performance element is connected with battery pack and DC power supply unit, by controlling the compound mode of battery, adjusts the output electric weight of battery pack, controls discharging and recharging of battery pack; Communication unit is connected with server 101 by communication line, receives or transmission information, and communication mode can be CAN bus, RS485 or Ethernet.

DC power supply unit 102 combinations power supply system of selection flow process as shown in Figure 4 as shown in Figure 3: DC power supply unit interface (1) is connected with processor, DC power supply unit interface (2) connects selects K switch 2, civil power is connected with selector switch K1 by AC/DC convertor (AC/DC) and transformer, and K switch 1 and K switch 2 states are by processor control.Civil power through and off signal is sent to processor by commercial power interruption detector, the closure of processor control selector switch K1 with open and three kinds of states of K switch 2, with connecting terminal 1, connecting terminal 2 and vacant.K1 and K2 combination realize following functions: when K1 closure and K2 are vacant, server 101 is by mains-supplied; When K1 closure and K2 are communicated with contact 1, server 101 is charged by mains-supplied and battery module 103; When K1 opens and K2 is communicated with contact 1, server is powered by battery module 103.

Above-mentioned electric supply installation also comprises the administration module 105 of powering for managing each battery module 103, between administration module 105 and each battery module 103, communicates by letter circuit 107.

Power supply system of selection flow process as shown in Figure 4, specifically comprises:

Step 1: in the time that mains-supplied is normal, commercial power interruption detector " leads to " signal by civil power and sends to processor, and the battery capacity that in battery module 103, processing unit is measured according to measuring unit, send control signal to DC power supply unit 102, if battery capacity less than, processor control K1 closure and K2 are communicated with contact 1, and DC power supply unit 102 is converted to direct current by electric main and powers to server 101, and charges to battery module 103; If battery capacity is full, processor control K1 closure and K2 are vacant, and server 101 is by mains-supplied.

Step 2: in the time of commercial power interruption, the civil power signal that " breaks " is sent to processor by commercial power interruption detector, processor control switch K1 opens and K switch 2 is communicated with contact 1, server 101 is powered by battery module 103, simultaneously, under the cooperate optimization of administration module, any one battery module 103 can be to server 101 direct current supplys in any frame 104.

Embodiment 2

As shown in Figure 5 according to the distributed power supply method of above-mentioned distribution type power-supplying apparatus, comprise step:

S1: battery module measuring unit is measured battery capacity in real time with confession electric loading wherein, the numbering that i is each frame, Θ is data center's mid frame set, and gained information is sent to administration module 105.

S2: administration module 105 is done according to testing result as judged,

If C _i-L _i>=C _th, the server 101 on frame i is powered by the battery module 103 in this frame; Wherein, C _thfor this frame lower bound of capacity threshold value that pond module 103 can discharge that powers on;

If C _i-L _i< C _th, the server 101 on frame i is C by battery module 103 amount of power supply in this frame _i-C _th, administration module 105 calculates required extra amount of power supply Δ L _i=L _i-C _i+ C _th;

S3: administration module 105 is by all C that satisfy condition _i-L _i< C _thframe i be recorded in set Ψ in;

S4: definition frame j, the battery module 103 on j ∈ (Θ-Ψ), except be in this frame server 101 power supplies, is x for gathering the electric weight that on Ψ mid frame, server 101 provides _j, j ∈ (Θ-Ψ);

S5: administration module 105 bases $\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}{x}_j=\underset{i\&Element;\mathrm{\&Psi;}}{\mathrm{\&Sigma;}}{\mathrm{\&Delta;L}}_i,x_j\&GreaterEqual;0,\&ForAll;j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})$ Control frame j, the battery module 103 on j ∈ (Θ-Ψ) is powered.By to battery capacity with for the real-time management of electric loading, the power supply of each battery module 103 is distributed, thereby effectively improve reliability and the power supplying efficiency of data center's electric power system.

Further, above-mentioned steps S5 is specially:

A, administration module computer rack j, the upper extra loss of supply rate of battery module of j ∈ (Θ-Ψ), $\frac{x_j}{C_j-L_j-C_{\mathrm{th}}},j\&Element;\mathrm{\&Theta;}-\mathrm{\&Psi;};$

B, administration module 105 define cooperate optimization model,

$\min :\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}\frac{x_j}{C_j-L_j-C_{\mathrm{th}}}$

$s.t.\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}{x}_j=\underset{i\&Element;\mathrm{\&Psi;}}{\mathrm{\&Sigma;}}{\mathrm{\&Delta;L}}_i,;$

$x_j\&GreaterEqual;0,\&ForAll;j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})$

C, administration module 105 adopt dynamic programming method to solve x _j, j ∈ (Θ-Ψ).

D, administration module (105) are by solved x _j, j ∈ (Θ-Ψ) feeds back to each frame j, the battery module (103) of j ∈ (Θ-Ψ);

E, administration module 105 are according to x _j, j ∈ (Θ-Ψ), by the compound mode of real-time regulating cell group or by current regulating circuit control frame j, the power supply of the battery module 103 on j ∈ (Θ-Ψ).By setting up cooperate optimization model, distributed power supply method has been done to further optimization, reduce energy consumption, improve utilization rate of electrical.

In described step e, be specially: frame j, the battery module (103) on j ∈ (Θ-Ψ) detects the capacity of each cell in battery pack in real time by the measuring unit in battery management system, and processing unit is according to x _jwith the volume controlled of each cell as shown in Figure 6 in battery switch array the opening and closing combination of gate-controlled switch 6, the compound mode of battery pack in the battery module (103) of dynamically recombinating, controls power supply.

Above execution mode is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification, therefore all technical schemes that are equal to also belong to protection category of the present invention.

Claims (6)

1. a distributed battery electric supply installation, is used to data center's power supply, and described data center comprises multiple frames (104) and is arranged at the server (101) in each frame (104); It is characterized in that: described electric supply installation comprises the DC power supply unit (102) and the battery module (103) that are arranged in each frame (104); In same frame (104), described DC power supply unit (102) is connected with server (101) and battery module (103) respectively, and between described server (101) and battery module (103), communicate by communication line (107), described DC power supply unit (102) is for server (101) power supply and provide charge power supply for described battery module (103); Each battery module interconnects between (103), and between each battery module (103), communicate by communication line (107), each battery module (103) can be server (101) power supply in any frame (104);

Wherein, described battery module (103) comprises battery management system and battery pack, described battery pack is connected with DC power supply unit (102), described battery management system is connected respectively with described server (101) and battery pack, with the power supply to server (101) and obtain charging from DC power supply unit (102) according to described server (101) power consumption and described battery capacity control;

Wherein, described battery management system comprises processing unit and is connected with described processing unit communication unit, measuring unit and performance element; Described measuring unit is connected with battery pack and server (101) respectively, measures in real time battery capacity and server (101) need for electricity and measurement result is sent to described processing unit; Described processing unit is according to described measurement result, sending controling instruction is to described performance element, described performance element is connected with battery pack and DC power supply unit (102), by controlling the compound mode of each battery in battery pack, adjust the output electric weight of battery pack, control discharging and recharging of battery pack; Described communication unit is connected with server (101) by communication line (107), receives or transmission information.

2. distribution type power-supplying apparatus according to claim 1, it is characterized in that: described DC power supply unit (102) comprises the processor of the described diverter switch state of AC/DC convertor, transformer, diverter switch, control connecting successively, the commercial power interruption detector being connected with processor, when described commercial power interruption detector detection civil power is logical, civil power is transformed to direct current by described AC/DC convertor, thereby to control described direct current be server (101) power supply or be described battery module (103) charging simultaneously by processor control diverter switch; When described commercial power interruption detector detects commercial power interruption, be server (101) power supply thereby processor control diverter switch makes battery pack.

3. distribution type power-supplying apparatus according to claim 2, it is characterized in that: described electric supply installation also comprises the administration module (105) for managing each battery module (103) power supply, between described administration module (105) and each battery module (103), communicate by letter circuit (107).

4. a distributed power supply method for distribution type power-supplying apparatus according to claim 3, comprises step:

S1: battery module (103) detects the wherein battery capacity C of battery pack in real time _ithe power consumption L of (i ∈ Θ) and server _i(i ∈ Θ), and testing result is sent to administration module (105); The numbering that wherein i is each frame, Θ is the set of institute's organic frame (104) composition;

S2: administration module (105) is done according to testing result as judged,

If C _i-L _i>=C _th, the server (101) on frame i is powered by the battery module in this frame (103); Wherein, C _thfor this frame lower bound of capacity threshold value that pond module (103) can discharge that powers on;

If C _i-L _i< C _th, the server (101) on frame i is C by the battery module in this frame (103) amount of power supply _i-C _th, administration module (105) calculates required extra amount of power supply Δ L _i=L _i-C _i+ C _th;

S3: administration module (105) is by all C that satisfy condition _i-L _i< C _thframe i be recorded in set Ψ in;

S4: definition frame j, the battery module (103) on j ∈ (Θ-Ψ) is except being server in this frame (101) power supply, the electric weight providing for the server (101) in the frame in set Ψ is x _j, j ∈ (Θ-Ψ);

S5: administration module (105) basis $\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}{x}_j=\underset{i\&Element;\mathrm{\&Psi;}}{\mathrm{\&Sigma;}}{\mathrm{\&Delta;L}}_i,x_j\&GreaterEqual;0,\&ForAll;j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})$ Control frame j, battery module (103) power supply on j ∈ (Θ-Ψ).

5. distributed optimization method of supplying power to according to claim 4, is characterized in that, described step S5 is specially:

A, administration module (105) computer rack j, the extra loss of supply rate of the upper battery module (103) of j ∈ (Θ-Ψ), $\frac{x_j}{C_j-L_j-C_{\mathrm{th}}},j\&Element;\mathrm{\&Theta;}-\mathrm{\&Psi;};$

B, administration module (105) definition cooperate optimization model,

$\min :\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}\frac{x_j}{C_j-L_j-C_{\mathrm{th}}}$

$s.t.\underset{j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})}{\mathrm{\&Sigma;}}{x}_j=\underset{i\&Element;\mathrm{\&Psi;}}{\mathrm{\&Sigma;}}{\mathrm{\&Delta;L}}_i,;$

$x_j\&GreaterEqual;0,\&ForAll;j\&Element;(\mathrm{\&Theta;}-\mathrm{\&Psi;})$

C, administration module (105) solve x _j, j ∈ (Θ-Ψ);

D, administration module (105) are by solved x _j, j ∈ (Θ-Ψ) feeds back to each frame j, the battery module (103) of j ∈ (Θ-Ψ);

E, battery module (103) are according to x _j, j ∈ (Θ-Ψ) controls frame j, battery module (103) power supply on j ∈ (Θ-Ψ).

6. distributed optimization method of supplying power to according to claim 5, it is characterized in that, in described step e, be specially: frame j, battery module (103) on j ∈ (Θ-Ψ) detects the capacity of each cell in battery pack in real time by the measuring unit in battery management system, processing unit is according to x _jwith the volume controlled battery switch array of each cell, the compound mode of battery pack in the battery module (103) of dynamically recombinating, controls power supply.