Bidirectional direct current cluster level control device, power supply system and electronic equipment

Abstract

The utility model relates to a bidirectional direct current cluster level control device, a power supply system and electronic equipment. The device comprises a first power supply circuit, the first end of the first power supply circuit is electrically connected with a battery cluster of the device, and the second end of the first power supply circuit is electrically connected with an energy storage transformer of the device; and the first control circuits are in communication connection with the corresponding first power supply circuits, and the first control circuits are used for controlling at least part of the battery clusters to discharge to an energy storage transformer of the device through the first power supply circuits.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery, more specifically, the utility model relates to a bidirectional direct current cluster level control device, power supply system and electronic equipment. BACKGROUND

[0002] With the rapid development of battery control technology, the cluster level controller as the device for charging and discharging control of battery cluster can realize intelligent management of battery cluster. In the prior art, the cluster level controller can control the conversion efficiency of the power supply circuit, so that the direct current output by the battery cluster can be converted by the power supply circuit to obtain the required direct current of the energy storage transformer. However, the cluster level controller usually controls the charging and discharging of one battery cluster, and the application scene is limited. SUMMARY

[0003] An object of the utility model is to provide a bidirectional direct current cluster level control device, power supply system and electronic equipment.

[0004] According to one aspect of the utility model, a bidirectional direct current cluster level control device is provided, which comprises:

[0005] a first power supply circuit, a first end of the first power supply circuit being electrically connected with a battery cluster of the device, and a second end of the first power supply circuit being electrically connected with an energy storage transformer of the device;

[0006] a first control circuit, the first control circuit being communicatively connected with the corresponding first power supply circuit, and the first control circuit being used for controlling at least part of the battery cluster to discharge to the energy storage transformer of the device through the first power supply circuit.

[0007] Optionally, the first power supply circuit comprises a direct current conversion circuit and a first switch circuit.

[0008] The first end of the direct current conversion circuit is electrically connected with the energy storage transformer of the device, the second end of the direct current conversion circuit is connected with the first end of the first switch circuit, the second end of the first switch circuit is electrically connected with the corresponding battery cluster, and the control end of the first switch circuit is communicatively connected with the corresponding first control circuit.

[0009] Optionally, the first switch circuit comprises a first switch, the first end of the first switch is connected with the second end of the direct current conversion circuit, the second end of the first switch is electrically connected with the corresponding battery cluster, and the control end of the first switch is communicatively connected with the corresponding first control circuit.

[0010] Optionally, the device further comprises a second switch, the second switch being arranged between the energy storage transformer and the direct current conversion circuit.

[0011] The device has a first discharging mode; when the device is in the first discharging mode, the second switch is turned on, the first control circuit controls the first switch circuit corresponding to the first battery cluster to be turned on, and controls the first DC conversion circuit to work, converts the first DC power output by the first battery cluster into second DC power, and outputs the second DC power to the energy storage transformer; wherein the battery cluster comprises the first battery cluster.

[0012] Optionally, the device further comprises a second control circuit, the second control circuit is in communication connection with the first control circuit, and the second control circuit is configured to output a first control signal; the first control circuit is configured to adjust the conversion efficiency of the DC conversion circuit in response to the first control signal.

[0013] Optionally, the second control circuit is in communication connection with the control end of the second switch.

[0014] When the device is in the first discharging mode, the second control circuit controls the second switch to be turned on.

[0015] Optionally, the device further has a second discharging mode; when the device is in the second discharging mode, the second control circuit controls the second switch to be turned off, controls the second DC conversion circuit and the third DC conversion circuit to work, controls the third switch on the same bus as the second DC conversion circuit to be turned on, and controls the fourth switch on the same bus as the third DC conversion circuit to be turned on; wherein the DC conversion circuit comprises the second DC conversion circuit and the third DC conversion circuit, and the first switch comprises the third switch and the fourth switch.

[0016] Optionally, the battery cluster comprises a second battery cluster and a third battery cluster, the device further comprises a fourth DC conversion circuit, the first end of the fourth DC conversion circuit is in electrical connection with the second battery cluster, the second end of the fourth DC conversion circuit is in electrical connection with the third battery cluster, and the control end of the fourth DC conversion circuit is in communication connection with a third control circuit; wherein the first control circuit comprises the third control circuit.

[0017] According to an aspect of the present application, a power supply system is provided, the power supply system comprising the bidirectional DC cluster level control device according to the first aspect.

[0018] According to an aspect of the present application, an electronic device is provided, the electronic device comprising the bidirectional DC cluster level control device according to the first aspect.

[0019] The technical effect of the utility model lies in that the first control circuit of the bidirectional direct current cluster level control device can control at least part of the battery cluster to discharge to the energy storage transformer through the first power supply circuit, which makes the utilization efficiency of the first control circuit higher, the discharge of the same battery cluster can be controlled by the same first control circuit, the application scenarios are widened, and the economic benefits of the bidirectional direct current cluster level control device can be effectively improved.

[0020] Other features of the present application, and their advantages, will become apparent from the following detailed description of exemplary embodiments of the present application, with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0022] Figure 1 is a structure block diagram of the bidirectional direct current cluster level control device in the embodiment of the application. DETAILED DESCRIPTION

[0023] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0024] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the present application or its application or uses.

[0025] Techniques and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the description if appropriate.

[0026] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0027] It should be noted that like references and characters herein relate to like items throughout the figures, and once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0028] Figure 1 is a structure block diagram of the bidirectional direct current cluster level control device in the embodiment of the application. As shown in the figure, the system comprises a first power supply circuit and a first control circuit 20. Figure 1

[0029] ​The first end of the first power supply circuit is electrically connected with the battery cluster 30 of the device, and the second end of the first power supply circuit is electrically connected with the energy storage transformer PCS of the device.

[0030] The first control circuit 20 is in communication connection with the corresponding first power supply circuit, and the first control circuit 20 is used for controlling at least part of the battery cluster 30 to discharge to the energy storage transformer PCS of the device through the first power supply circuit.

[0031] In some examples, the first power supply circuit has a plurality of first ends, i.e., the first end N1-the first end N5, the first end N1-the first end N5 are sequentially connected with the battery cluster Bat1-the battery cluster Bat5, the first control circuit K1 can control the battery cluster Bat1 to discharge to the energy storage transformer PCS of the device through the first power supply circuit, the first control circuit K2 can control the battery cluster Bat2 and the battery cluster Bat3 to discharge to the energy storage transformer PCS of the device through the first power supply circuit, and the first control circuit K3 can control the battery cluster Bat4 and the battery cluster Bat5 to discharge to the energy storage transformer PCS of the device through the first power supply circuit.

[0032] In other words, the first control circuit 20 of the bidirectional direct current cluster level control device can control at least part of the battery cluster 30 to discharge to the energy storage transformer PCS through the first power supply circuit, which makes the utilization efficiency of the first control circuit 20 higher, and the discharge of the same battery cluster can be controlled by the same first control circuit 20, which expands the application scenarios, and can effectively improve the economic benefits of the bidirectional direct current cluster level control device.

[0033] In some embodiments, in order to realize that different first control circuits 20 can control the corresponding battery cluster 30 to discharge to the direct current conversion circuit 10, the first power supply circuit includes the direct current conversion circuit 10 and the first switch circuit;

[0034] The first end of the direct current conversion circuit 10 is electrically connected with the energy storage transformer PCS of the device, the second end of the direct current conversion circuit 10 is connected with the first end of the first switch circuit, the second end of the first switch circuit is electrically connected with the corresponding battery cluster 30, and the control end of the first switch circuit is in communication connection with the corresponding first control circuit 20.

[0035] In the embodiment, the direct current conversion circuit 10 is an existing DC-DC conversion circuit, which can convert the direct current output by the battery cluster 30.

[0036] In the embodiment, the first control circuit 20 can output a conduction signal to the first switch circuit, so that the first switch circuit is turned on in response to the conduction signal, and after the first switch circuit is turned on, the direct current conversion circuit 10 can convert the direct current output by the battery cluster 30.

[0037] In some embodiments, the first switch circuit comprises a first switch, a first end of the first switch is connected with the second end of the direct current conversion circuit 10, a second end of the first switch is connected with the corresponding battery cluster 30, and a control end of the first switch is connected with the corresponding first control circuit 20.

[0038] In the embodiment, as shown in Figure 1 the first switch is switch K21-switch K54. Taking the switch K21 corresponding to the battery cluster 30C as an example, the first control circuit 20B controls the switch K21 to be closed, and the battery cluster 30C can discharge to the energy storage transformer PCS through the direct current conversion circuit 10A.

[0039] In some embodiments, in order to realize discharging the energy storage transformer PCS, the device further comprises a second switch, the second switch is arranged between the energy storage transformer PCS and the direct current conversion circuit 10.

[0040] The device has a first discharging mode. When the device is in the first discharging mode, the second switch is turned on, the first control circuit 20 controls the first switch circuit corresponding to the first battery cluster 30 to be turned on, and controls the first direct current conversion circuit 10 to work, so as to convert the first direct current output by the first battery cluster 30 into second direct current and output to the energy storage transformer PCS. The battery cluster 30 comprises the first battery cluster 30.

[0041] In the embodiment, as shown in Figure 1 the second switch is switch K11, a first end of the switch K11 is connected with the energy storage transformer PCS, and a second end of the switch K11 is connected with the first end of the direct current conversion circuit 10A.

[0042] In the embodiment, when the device is in the first discharging mode, the second control circuit 40 can select one or more battery clusters 30 as the first battery cluster, and the second control circuit 40 can control the second switch to be turned on. The first control circuit 20 controls the first switch circuit corresponding to the first battery cluster to be turned on, and controls the first direct current conversion circuit to work, so as to convert the first direct current output by the first battery cluster into second direct current and output to the energy storage transformer PCS. For example, the first battery cluster is the battery cluster 30A, the first switch circuit corresponding to the first battery cluster is switch K32, when the device is in the first discharging mode, the switch K11 and the switch K32 are turned on, and the direct current conversion circuit 10B works to convert the first direct current output by the battery cluster 30A into second direct current and output to the energy storage transformer PCS.

[0043] In some embodiments, the device further includes a second control circuit 40, which is communicatively connected to the first control circuit 20. The second control circuit 40 is used to output a first control signal, and the first control circuit 20 is used to adjust the conversion efficiency of the DC-DC converter circuit 10 in response to the first control signal.

[0044] In this embodiment, the second control circuit 40 can be a controller, and it can communicate and interact with the first control circuit 20. The second control circuit 40 can obtain parameters such as the charge, temperature, and voltage of each battery cluster 30, and it can output a first control signal representing a first duty cycle based on these parameters. The first control circuit 20 can output a PWM wave signal with the first duty cycle to the DC-DC converter 10, so that the DC-DC converter 10 adjusts its conversion efficiency in response to the first duty cycle.

[0045] In some embodiments, in order to control the second switch, the second control circuit 40 is communicatively connected to the control terminal of the second switch; wherein, when the device is in the first discharge mode, the second control circuit 40 controls the second switch to be turned on.

[0046] In some embodiments, the device further has a second discharge mode; when the device is in the second discharge mode, the second control circuit 40 controls the second switch to open, controls the second DC-DC conversion circuit and the third DC-DC conversion circuit to operate, controls the third switch on the same bus as the second DC-DC conversion circuit to turn on, and controls the fourth switch on the same bus as the third DC-DC conversion circuit to turn on; wherein, the DC-DC conversion circuit 10 includes the second DC-DC conversion circuit and the third DC-DC conversion circuit, and the first switch includes the third switch and the fourth switch.

[0047] In some examples, such as Figure 1 As shown, the second control circuit 40 can select battery clusters 30A and 30B, and instructs battery cluster 30A to charge battery cluster 30C. The second control circuit 40 instructs the first control circuit 20A to turn on switch K31, and the second control circuit 40 instructs the first control circuit 20B to turn on switch K22. The second DC-DC conversion circuit is DC-DC conversion circuit 10A, switch K31 is the third switch, the third DC-DC conversion circuit is DC-DC conversion circuit 10B, and switch K22 is the fourth switch. When switches K22 and K31 are on and switch K11 is off, the DC power output from battery cluster 30A can be converted into the DC power required by battery cluster 30C through DC-DC conversion circuits 10A and 10B.

[0048] In some embodiments, in order to realize mutual charging or discharging between the battery clusters, the battery clusters include a second battery cluster and a third battery cluster, and the device further includes a fourth DC conversion circuit, a first end of the fourth DC conversion circuit being electrically connected with the second battery cluster, a second end of the fourth DC conversion circuit being electrically connected with the third battery cluster, and a control end of the fourth DC conversion circuit being in communication connection with the third control circuit; wherein the first control circuit includes the third control circuit.

[0049] In the present embodiment, the fourth DC conversion circuit is an existing DC-DC conversion circuit, and the fourth DC conversion circuit can realize mutual charging between the battery clusters and realize that a battery cluster with more electric quantity charges the energy storage transformer PCS alone.

[0050] In some examples, as shown in Figure 1 The second battery cluster is battery cluster 30A, the third battery cluster is battery cluster 30B, the fourth DC conversion circuit is DC conversion circuit 10A, the third control circuit is first control circuit 20A, and the second control circuit 40 can control the first control circuit 20A, so that the battery cluster 30A charges the battery cluster 30B through the DC conversion circuit 10A.

[0051] According to the power supply system provided in the embodiments of the present application, the bidirectional DC cluster-level control device in any of the above embodiments is included.

[0052] According to the electronic device provided in the embodiments of the present application, the bidirectional DC cluster-level control device in any of the above embodiments is included.

[0053] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A bidirectional DC cluster level control device, characterized by, The device comprises: A first power supply circuit, a first end of the first power supply circuit is electrically connected with a battery cluster of the device, and a second end of the first power supply circuit is electrically connected with an energy storage transformer of the device; A first control circuit, the first control circuit is in communication connection with the corresponding first power supply circuit, and the first control circuit is used for controlling at least part of the battery cluster to discharge to the energy storage transformer of the device through the first power supply circuit.

2. The apparatus of claim 1, wherein, The first power supply circuit comprises a direct current conversion circuit and a first switch circuit; The first end of the direct current conversion circuit is electrically connected with the energy storage transformer of the device, the second end of the direct current conversion circuit is connected with the first end of the first switch circuit, the second end of the first switch circuit is electrically connected with the corresponding battery cluster, and the control end of the first switch circuit is in communication connection with the corresponding first control circuit.

3. The apparatus of claim 2, wherein, The first switch circuit comprises a first switch, the first end of the first switch is connected with the second end of the direct current conversion circuit, the second end of the first switch is electrically connected with the corresponding battery cluster, and the control end of the first switch is in communication connection with the corresponding first control circuit.

4. The apparatus of claim 3, wherein, The device further comprises a second switch, which is arranged between the energy storage transformer and the direct current conversion circuit; The device has a first discharge mode; when the device is in the first discharge mode, the second switch is turned on, the first control circuit controls the first switch circuit corresponding to the first battery cluster to be turned on, and controls the first direct current conversion circuit to work, converts the first direct current output by the first battery cluster into second direct current, and outputs the second direct current to the energy storage transformer; wherein the battery cluster comprises a first battery cluster.

5. The apparatus of claim 4, wherein, The device further comprises a second control circuit, the second control circuit is in communication connection with the first control circuit, and the second control circuit is used for outputting a first control signal; the first control circuit is used for adjusting the conversion efficiency of the direct current conversion circuit in response to the first control signal.

6. The apparatus of claim 5, wherein, The second control circuit is in communication connection with the control end of the second switch; When the device is in the first discharge mode, the second control circuit controls the second switch to be turned on.

7. The apparatus of claim 5, wherein, The device further has a second discharge mode; when the device is in the second discharge mode, the second control circuit controls the second switch to be turned off, controls the second direct current conversion circuit and the third direct current conversion circuit to work, controls the third switch on the same bus as the second direct current conversion circuit to be turned on, and controls the fourth switch on the same bus as the third direct current conversion circuit to be turned on; wherein the direct current conversion circuit comprises a second direct current conversion circuit and a third direct current conversion circuit, and the first switch comprises a third switch and a fourth switch.

8. The apparatus of claim 1, wherein, The battery cluster comprises a second battery cluster and a third battery cluster, and the device further comprises a fourth direct current conversion circuit, a first end of the fourth direct current conversion circuit is electrically connected with the second battery cluster, a second end of the fourth direct current conversion circuit is electrically connected with the third battery cluster, and a control end of the fourth direct current conversion circuit is in communication connection with a third control circuit; wherein the first control circuit comprises the third control circuit.

9. A power supply system characterized by comprising: The power supply system comprises the bidirectional direct current cluster level control device according to any one of claims 1 to 8.

10. An electronic device, comprising: The electronic device comprises the bidirectional direct current cluster level control device according to any one of claims 1 to 8.

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