Battery module commutation management device and automatic inspection system

Abstract

The utility model provides a battery module commutation management device and an automatic inspection system, the device comprises a rectification module, an isolation boost module, an inversion grid-connected module and a battery charging and discharging module, one side of the rectification module is connected in parallel with the inversion grid-connected module and then is respectively connected with a live wire and a zero wire of alternating current (AC); one side, far away from the AC, of the inversion grid-connected module is connected with the isolation boost module, one side, far away from the AC, of the rectification module is connected with one side, far away from the inversion grid-connected module, of the isolation boost module in parallel and then is connected with one side of the battery charging and discharging module, and the other side of the battery charging and discharging module is connected with the battery module through the energy adapter; according to the battery module commutation management device and the automatic inspection system, the arrangement of the commutation management device structure can be optimized, grid-connected management of battery energy storage and inversion can be realized, the stability of battery operation can be improved, the service life of the battery can be prolonged, and the later operation and maintenance cost of the battery can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage inspection, and in particular to a battery module commutation management device and an automatic inspection system. Background Art

[0002] With the widespread use of electricity in people's daily lives, the safety of power energy storage has become a crucial issue in energy storage systems. The existing switching methods between battery modules are relatively complicated, and the distributed settings of battery energy storage and inverters can easily affect the battery's commutation efficiency. In addition, the distributed setting can easily cause scheduling errors between battery energy storage and inverters during the battery commutation process, thereby affecting the safety of battery module operation. Therefore, it is of great significance to study how to improve the commutation efficiency of battery modules in energy storage systems while ensuring the operational safety of battery modules in energy storage systems.

[0003] Patent CN107069944B mentions a communication battery pack remote discharge detection and maintenance system, the system includes a controller, a battery pack data acquisition module, a power grid data acquisition module, a charge and discharge control circuit and an inverter grid-connected module, the signal input end of the battery pack data acquisition module is connected to the battery pack, the power grid data acquisition module is connected to the charging grid of the battery pack; the charging grid is divided into three paths after passing through the rectifier and the charge and discharge control circuit, the first path is connected to the load, the second path is connected to the battery pack, and the third path is connected to the inverter grid-connected module, and the control output end of the controller is connected to the charge and discharge control circuit and the control end of the inverter grid-connected module respectively. Through the setting of the above system, the function of automatic charging and discharging can be realized, but due to the complex structure of the system, it is easy to cause the problem of high cost and low commutation efficiency. Utility Model Content

[0004] In view of this, the utility model aims to propose a battery module commutation management device and an automatic inspection system to solve the problems of low commutation efficiency and high cost of battery modules in energy storage systems in the prior art; thereby optimizing the setting of the commutation management device structure in the battery module, improving the commutation efficiency of the commutation management device, realizing grid-connected management of battery energy storage and inversion, improving the stability of battery operation, enhancing the service life of the battery, and reducing the later operation and maintenance costs of the battery.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] The utility model relates to a battery module commutation management device and an automatic inspection system. The battery module commutation management device comprises a rectifier module, an isolation boost module, an inverter grid-connected module and a battery charge and discharge module. One side of the rectifier module is connected in parallel with the inverter grid-connected module and then respectively connected to the live wire and the neutral wire of the alternating current AC; the side of the inverter grid-connected module away from the alternating current AC is connected to the isolation boost module, the side of the rectifier module away from the alternating current AC is connected in parallel with the side of the isolation boost module away from the inverter grid-connected module, and then connected to one side of the battery charge and discharge module, and the other side of the battery charge and discharge module is connected to the battery module through an energy adapter.

[0007] Furthermore, a first air switch K1 is provided between the rectifier module and the alternating current AC.

[0008] Furthermore, a second air switch K2 is provided between the inverter grid-connected module and the alternating current AC.

[0009] Furthermore, after the side of the first air switch K1 away from the rectifier module and the side of the second air switch K2 away from the inverter grid-connected module are connected in parallel, they are respectively connected to the live wire and the neutral wire of the alternating current AC.

[0010] Furthermore, the first air switch K1 and the second air switch K2 are both air circuit breakers.

[0011] Furthermore, the voltage on the side of the isolation boost module close to the battery charging and discharging module is direct current DC220V.

[0012] Furthermore, the voltage on the side of the isolation boost module away from the battery charging and discharging module is DC 400V.

[0013] Furthermore, the battery charging and discharging module includes a CPU mainboard, a PWM control circuit, an information acquisition circuit and a switch signal output module. The CPU mainboard is respectively connected to the PWM control circuit, the information acquisition circuit and the switch signal output module. The information acquisition circuit and the switch signal output module are both connected to the energy adapter. The CPU mainboard is respectively connected to the rectifier module and the isolation boost module.

[0014] An automatic inspection system, the system includes a battery module commutation management device, the system also includes an energy storage converter PCS, an energy adapter, a switch, a hub, a network card and a battery module. After one side of the energy storage converter PCS is connected in parallel with the commutation management device, it is respectively connected to the live wire L and the neutral wire N of the alternating current AC. The other side of the energy storage converter PCS is electrically connected to the energy adapter through a third switch QF. The energy adapter is respectively signal-connected to the network card, the switch, and one end of the commutation management device away from the alternating current AC. The switch is signal-connected to the network card through the hub, and the network card is respectively connected to the two ends of different battery modules.

[0015] Furthermore, the number of battery modules is n, where n is a positive integer.

[0016] Compared with the prior art, the battery module commutation management device and automatic inspection system described in the utility model have the following beneficial effects:

[0017] By setting the device in the system, it is possible to optimize the setting of the battery module commutation management device structure, improve the commutation efficiency of the commutation management device, realize the grid-connected management of battery energy storage and inverter, improve the stability of battery operation, enhance the service life of the battery, and reduce the later operation and maintenance costs of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is the overall structure diagram of the automatic inspection system;

[0020] Figure 2 It is a schematic diagram of the specific structure of the commutation management device.

[0021] Explanation of the accompanying drawings: 1. Rectification module; 2. Isolation boost module; 3. Inverter grid-connected module; 4. Battery charging and discharging module; 41. CPU main board; 42. PWM control circuit; 43. Information acquisition circuit; 44. Switch signal output module. DETAILED DESCRIPTION

[0022] The following will use the terms commonly used by those skilled in the art to convey the essence of their work to other technical personnel in the art to describe the utility model concepts of the present disclosure. However, these utility model concepts can be embodied in many different forms and should not be considered as limited to the embodiments described herein.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] This embodiment is directed to an energy storage inspection system, which is similar to a conventional energy storage inspection system in that the overall structure is composed of batteries and wires.

[0026] In the prior art, the switching method between existing battery modules is relatively complicated, and the distributed setting of battery energy storage and inverter is easy to affect the battery conversion efficiency. In addition, the distributed setting is also easy to cause scheduling errors between battery energy storage and inverter during the battery conversion process, thereby affecting the safety of battery module operation.

[0027] In order to solve the problems in the prior art that the battery module in the energy storage system has low commutation efficiency and high cost; this embodiment proposes a battery module commutation management device and an automatic inspection system, wherein the battery module commutation management device comprises a rectifier module 1, an isolation boost module 2, an inverter grid-connected module 3 and a battery charge and discharge module 4, one side of the rectifier module 1 is connected in parallel with the inverter grid-connected module 3, and then connected to the live wire and the neutral wire of the alternating current AC respectively; the side of the inverter grid-connected module 3 away from the alternating current AC is connected to the isolation boost module 2, the side of the rectifier module 1 away from the alternating current AC is connected in parallel with the side of the isolation boost module 2 away from the inverter grid-connected module 3, and then connected to one side of the battery charge and discharge module 4, and the other side of the battery charge and discharge module 4 is connected to the battery module through an energy adapter. Among them, a first air switch K1 is set between the rectifier module 1 and the alternating current AC, and a second air switch K2 is set between the inverter grid-connected module 3 and the alternating current AC. After the side of the first air switch K1 away from the rectifier module 1 is connected in parallel with the side of the second air switch K2 away from the inverter grid-connected module 3, they are respectively connected to the live wire and the neutral wire of the alternating current AC; the first air switch K1 and the second air switch K2 can be opened and closed under the action of the battery charging and discharging module 4, so as to realize the charging and discharging control of different battery modules; in this embodiment, the voltage value of the alternating current AC is 220V, the voltage of the side of the isolation boost module 2 close to the battery charging and discharging module 4 is direct current DC220V, and the voltage of the side of the isolation boost module 2 away from the battery charging and discharging module 4 is direct current DC400V; the first air switch K1 and the second air switch K2 are both air circuit breakers, which are used to facilitate the switching between rectification and inversion of the battery module under the instruction of the battery charging and discharging module 4; the inverter grid-connected module 3 is a PWM inverter grid-connected module.

[0028] Through the setting of the commutation management device, it is possible to optimize the setting of the battery module commutation device structure, improve the commutation efficiency of the commutation device, and adopt the grid-connected setting of the rectifier and inverter modules, which is conducive to the grid-connected management of battery energy storage and inverter, and improve the stability of battery operation. By collecting real-time information of the battery module through the charging and discharging module and making corresponding adjustment operations, it can effectively enhance the service life of the battery and reduce the operation and maintenance cost of the battery in the later stage.

[0029] The battery charging and discharging module 4 includes a CPU mainboard 41, a PWM control circuit 42, an information collection circuit 43 and a switch signal output module 44. The CPU mainboard 41 is respectively connected to the PWM control circuit 42, the information collection circuit 43 and the switch signal output module 44. The information collection circuit 43 and the switch signal output module 44 are both connected to the energy adapter. The CPU mainboard 41 is respectively connected to the rectifier module 1 and the isolation boost module 2. It is used to receive the information of different battery modules collected by the information collection circuit 43, and after analyzing and processing the information, the corresponding signal sent by the PWM control circuit 42 is used to control the first air switch K1 and the second air switch K2 to perform corresponding switch changes, so as to realize different control of battery module energy storage and inversion.

[0030] The setting of the CPU mainboard 41 is conducive to realizing corresponding regulation of other components in the battery charging and discharging module 4. The setting of the PWM control circuit 42 is conducive to receiving and sending the PWM control circuit 42 signal, so as to facilitate the corresponding model transmission between the inverter grid-connected module 3, and improve the switching accuracy between the rectification and inversion of the commutation device; in addition, the setting of the information acquisition circuit 43 is conducive to obtaining the real-time monitoring information of the battery module by the commutation device, and after being processed by the CPU mainboard 41, it is transmitted through the switch signal output module 44, so as to improve the inspection capability of the automatic inspection system, and can also improve the commutation efficiency of the commutation management device.

[0031] An automatic inspection system, the system includes a battery module commutation management device, and the system also includes an energy storage converter PCS, an energy adapter, a switch, a hub, a network card and a battery module. After one side of the energy storage converter PCS is connected in parallel with the commutation management device, it is respectively connected to the live wire L and the neutral wire N of the alternating current AC, the other side of the energy storage converter PCS is electrically connected to the energy adapter through a third switch QF, the energy adapter is respectively connected to the network card, the switch, and the end of the commutation management device away from the alternating current AC, the switch is connected to the network card signal through the hub, and the network card is respectively connected to the two ends of different battery modules, for facilitating real-time monitoring of the current, voltage and temperature information of the battery monomer, and feeding back to the switch through the hub, thereby realizing automatic inspection of each battery monomer in the battery module under the action of the adapter and the commutation management device. Among them, there are n battery modules, n is a positive integer, different battery modules contain m battery cells, m is a positive integer, and n×m network cards are set. Each network card is set in one-to-one correspondence with a battery cell, which is used to facilitate real-time monitoring of the operating status of each battery cell in different battery modules, thereby facilitating timely adjustment between energy storage and inversion of abnormal batteries.

[0032] Through the setting of the automatic inspection system, the real-time status information of the battery module can be effectively monitored. Through the setting of the network card, under the control of the adapter and the commutation management device, the different battery cells in the battery module can be connected or disconnected, so as to facilitate the corresponding charging and discharging or fault removal management of abnormal batteries; thereby effectively improving the operating stability and safety of the battery module, enhancing the reliability of the energy storage system, which is beneficial to increasing the service life of the battery, and can also prevent problems before they occur and reduce the operation and maintenance costs of the battery in the later stage.

[0033] In the utility model, any energy storage inspection system may include a battery module commutation management device structure described in the present embodiment, and based on the related structures and assembly relationship of the isolation boost module 2 and the inverter grid-connected module 3 provided in the present embodiment, the energy storage inspection system also includes conventional components of batteries and wires including the same structure. Since they are all prior art, they will not be elaborated here.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module commutation management device, characterized in that: The invention comprises a rectifier module (1), an isolation boost module (2), an inverter grid-connected module (3) and a battery charge-discharge module (4); one side of the rectifier module (1) is connected in parallel with the inverter grid-connected module (3) and then respectively connected to the live wire and the neutral wire of the alternating current (AC); the side of the inverter grid-connected module (3) away from the alternating current (AC) is connected to the isolation boost module (2); the side of the rectifier module (1) away from the alternating current (AC) is connected in parallel with the side of the isolation boost module (2) away from the inverter grid-connected module (3) and then connected to one side of the battery charge-discharge module (4); the other side of the battery charge-discharge module (4) is connected to a battery module via an energy adapter.

2. A battery module commutation management device according to claim 1, characterized in that: A first air switch K1 is provided between the rectifier module (1) and the alternating current AC.

3. A battery module commutation management device according to claim 2, characterized in that: A second air switch K2 is provided between the inverter grid-connected module (3) and the alternating current AC.

4. A battery module commutation management device according to claim 3, characterized in that: After the side of the first air switch K1 away from the rectifier module (1) and the side of the second air switch K2 away from the inverter grid-connected module (3) are connected in parallel, they are respectively connected to the live wire and the neutral wire of the alternating current AC.

5. A battery module commutation management device according to claim 4, characterized in that: The first air switch K1 and the second air switch K2 are both air circuit breakers.

6. A battery module commutation management device according to claim 1, characterized in that: The voltage on the side of the isolation boost module (2) close to the battery charging and discharging module (4) is direct current DC220V.

7. A battery module commutation management device according to claim 6, characterized in that: The voltage on the side of the isolation boost module (2) away from the battery charging and discharging module (4) is direct current DC 400V.

8. A battery module commutation management device according to claim 1, characterized in that: The battery charging and discharging module (4) comprises a CPU mainboard (41), a PWM control circuit (42), an information collection circuit (43) and a switch signal output module (44); the CPU mainboard (41) is respectively connected to the PWM control circuit (42), the information collection circuit (43) and the switch signal output module (44); the information collection circuit (43) and the switch signal output module (44) are both connected to an energy adapter; and the CPU mainboard (41) is respectively connected to a rectifier module (1) and an isolation boost module (2).

9. An automatic inspection system, characterized in that: The system includes a battery module commutation management device according to any one of claims 1 to 8, and the system also includes an energy storage inverter PCS, an energy adapter, a switch, a hub, a network card and a battery module. After one side of the energy storage inverter PCS is connected in parallel with the commutation management device, it is respectively connected to the live wire L and the neutral wire N of the alternating current AC. The other side of the energy storage inverter PCS is electrically connected to the energy adapter through a third switch QF. The energy adapter is respectively signal-connected to the network card, the switch, and one end of the commutation management device away from the alternating current AC. The switch is signal-connected to the network card through the hub, and the network card is respectively connected to the two ends of different battery modules.

10. An automatic inspection system according to claim 9, characterized in that: The number of battery modules is n, where n is a positive integer.

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