Energy storage battery system
A modular energy storage system with interchangeable control modules addresses high replacement and maintenance costs by enabling reuse of battery modules and selective connection to low or high voltage inverters, reducing costs.
Patent Information
- Application Number
- CN202422152352.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The problem of the high cost of replacement or repair of existing household energy storage products after use for a period of time.
An energy storage battery system is provided, including a first electronic control module and a second electronic control module. The battery module can be connected to different types of energy storage converters, the electronic control modules can be replaced with each other, and the battery module can be reused.
It reduces replacement and maintenance costs, facilitates the disassembly and assembly of the electronic control module and battery module, and improves the flexibility and economy of the system.
Smart Images
Figure CN223109705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage batteries, and specifically provides an energy storage battery system. Background Art
[0002] In recent years, with the adjustment of energy structure in Western countries and the growth of electric energy demand in the global southern countries, the installed capacity of household energy storage equipment has been growing significantly. At present, the mainstream household energy storage products on the market can be divided into two categories according to the battery output voltage. The first category of household energy storage products includes a battery box with an output voltage of 48V and an energy storage converter matched with the battery box. The battery box includes a box body, and a plurality of battery cells with a rated voltage of 3.2V are encapsulated in the box body. The battery cells are connected in series to form a battery pack with an output voltage of 48V. The battery pack is connected to an electronic switch tube, and the electronic switch tube is connected to the transmission terminal on the box body. The open circuit voltage of the transmission terminal on the battery box is 48V. The battery cell is equipped with a collection element for collecting temperature, current, and voltage. A battery management system is encapsulated in the box body. The battery management system is connected to the collection element, the electronic switch tube, and the communication terminal on the box body. The transmission terminal and the communication terminal on the battery box are respectively connected to the transmission terminal and the communication terminal on the DC side of the energy storage converter. The second type of household energy storage products includes a battery box with an output voltage of 400V and an energy storage converter matched with the battery box. The battery box includes a box body, in which a plurality of cells with a rated voltage of 3.2V are encapsulated. The cells are connected in series to form a battery pack with an output voltage of 48V. The battery pack is connected to a DC-DC converter, which is connected to the transmission terminal on the box body. The 48V DC voltage is converted into a 400V DC voltage through the DC-DC converter. The open circuit voltage of the transmission terminal on the battery box is 400V. The cell is equipped with a collection element for collecting temperature, current, and voltage. A battery management system is encapsulated in the box body. The battery management system is connected to the collection element, the electronic switch tube, and the communication terminal on the box body. The transmission terminal and the communication terminal on the battery box are respectively connected to the transmission terminal and the communication terminal on the DC side of the energy storage converter. Since the output voltage of the battery box of the second type of household energy storage product is higher, compared with the first type of household energy storage product, the energy conversion efficiency of the energy storage inverter of the second type of household energy storage product is higher, resulting in less power loss in the second type of household energy storage product and lower long-term use costs for users.
[0003] Generally, the price of the first type of household energy storage products is relatively low, while the price of the second type of household energy storage products is relatively high. Most users usually choose the first type of household energy storage products when purchasing household energy storage products for the first time. After using them for a period of time, users deeply feel the convenience brought by household energy storage products and the reduction of electricity costs. Users want to use the second type of household energy storage products with less power loss. At this time, a complete set of the second type of household energy storage products needs to be purchased to replace the first type of household energy storage products, and the cost of upgrading and replacing household energy storage products for users is relatively high. During the use of the first type of household energy storage products and the second type of household energy storage products, if the electrical components in the battery box are damaged, the entire battery box needs to be replaced, and the maintenance cost is relatively high.
[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention
[0005] The present invention aims to solve the above technical problems, that is, to solve the problem of relatively high cost of replacement or maintenance of existing household energy storage products after use for a period of time.
[0006] The present invention provides an energy storage battery system, which includes one of a first electronic control module and a second electronic control module and a battery module. The battery module includes a battery box and a plurality of battery cells encapsulated in the battery box. The first electronic control module can selectively electrically connect the battery module to a first energy storage inverter so as to transmit the output voltage of the battery module to the first energy storage inverter. The second electronic control module can selectively electrically connect the battery module to a second energy storage inverter so as to boost the output voltage of the battery module and then transmit it to the second energy storage inverter. The first electronic control module and the second electronic control module can be replaced with each other.
[0007] In the preferred technical solution of the above energy storage battery system, a plurality of acquisition units are encapsulated in the battery box. A battery box power transmission terminal and a battery box communication terminal are provided on the battery box. The battery cells are connected to the battery box power transmission terminal, and the acquisition elements are connected to the battery box communication terminal. The first electronic control module includes a first electronic control box and a switch and a first battery management system encapsulated in the first electronic control box. A first power transmission terminal, a second power transmission terminal, a first communication terminal, and a second communication terminal are provided on the first electronic control box. The switch is connected in series between the first power transmission terminal and the second power transmission terminal. The first battery management system is communicatively connected to the first communication terminal, the second communication terminal, and the switch. The battery box power transmission terminal can be detachably connected to the first power transmission terminal, and the battery box communication terminal can be detachably connected to the first communication terminal. The second electronic control module includes a second electronic control box and a DC-DC converter and a second battery management system encapsulated in the second electronic control box. A third power transmission terminal, a fourth power transmission terminal, a third communication terminal, and a fourth communication terminal are provided on the second electronic control box. The DC-DC converter is connected in series between the third power transmission terminal and the fourth power transmission terminal. The second battery management system is communicatively connected to the third communication terminal, the fourth communication terminal, and the DC-DC converter. The battery box power transmission terminal can be detachably connected to the third power transmission terminal, and the battery box communication terminal can be detachably connected to the third communication terminal. When the energy storage battery system includes the first electronic control module, the battery box power transmission terminal is detachably connected to the first power transmission terminal, and the battery box communication terminal is detachably connected to the first communication terminal. When the energy storage battery system includes the second electronic control module, the battery box power transmission terminal is detachably connected to the third power transmission terminal, and the battery box communication terminal is detachably connected to the third communication terminal.
[0008] In the preferred technical solution of the above energy storage battery system, the battery box power transmission terminal, the first power transmission terminal, the second power transmission terminal, the third power transmission terminal, the fourth power transmission terminal, the battery box communication terminal, the first communication terminal, the second communication terminal, the third communication terminal, and the fourth communication terminal are all plug-in wiring terminals.
[0009] In the preferred technical solution of the above energy storage battery system, a battery box plug-in interface is provided on the battery box, and the battery box power transmission terminal and the battery box communication terminal are both arranged in the battery box plug-in interface; a first plug-in interface adapted to the battery box plug-in interface is provided on the first electric control box, and the first power transmission terminal and the first communication terminal are both arranged in the first plug-in interface, and the first plug-in interface is used for plugging and connecting with the battery box plug-in interface; a second plug-in interface adapted to the battery box plug-in interface is provided on the second electric control box, and the third power transmission terminal and the third communication terminal are both arranged in the second plug-in interface, and the second plug-in interface is used for plugging with the battery box plug-in interface; when the energy storage battery system includes the first electric control module, the first plug-in interface is plugged and connected with the battery box plug-in interface; when the energy storage battery system includes the second electric control module, the second plug-in interface is plugged and connected with the battery box plug-in interface.
[0010] In the preferred technical solution of the above energy storage battery system, the battery box power transmission terminal and the battery box communication terminal are arranged on each of at least two surfaces of the battery box; when the energy storage battery system includes the first electric control module, the first power transmission terminal and the first communication terminal are detachably connected to the battery box power transmission terminal and the battery box communication terminal on the same surface of the battery box; when the energy storage battery system includes the second electric control module, the third power transmission terminal and the third communication terminal are detachably connected to the battery box power transmission terminal and the battery box communication terminal on the same surface of the battery box.
[0011] In the preferred technical solution of the above energy storage battery system, when the energy storage battery system includes the first electric control module, the energy storage battery system includes the first energy storage converter, the first energy storage converter has a first DC power transmission terminal, a first AC power transmission terminal and a fifth communication terminal, the second power transmission terminal is detachably connected to the DC power transmission terminal, and the second communication terminal is detachably connected to the fifth communication terminal; when the energy storage battery system includes the second electric control module, the energy storage battery system includes the second energy storage converter, the second energy storage converter has a second DC power transmission terminal, a second AC power transmission terminal and a sixth communication terminal, the fourth power transmission terminal is detachably connected to the second DC power transmission terminal, and the fourth communication terminal is detachably connected to the sixth communication terminal.
[0012] In the preferred technical solution of the above energy storage battery system, the first DC power transmission terminal, the first AC power transmission terminal, the fifth communication terminal, the second DC power transmission terminal, the second AC power transmission terminal and the sixth communication terminal are all plug-in wiring terminals.
[0013] In the preferred technical solution of the above energy storage battery system, when the energy storage battery system includes the first electronic control module, the number of the battery modules and the number of the first electronic control modules are both multiple, and the number of the battery modules is the same as the number of the first electronic control modules; the battery box power transmission terminals of the multiple battery modules are connected to the first power transmission terminals of the multiple first electronic control modules in a one-to-one correspondence, and the battery box communication terminals of the multiple battery modules are connected to the first communication terminals of the multiple first electronic control modules in a one-to-one correspondence; the second power transmission terminals of the multiple first electronic control modules are all connected to the first DC power transmission terminal of the first energy storage inverter, and the second communication terminals of the multiple first electronic control modules are all connected to the fifth communication terminal of the first energy storage inverter.
[0014] In the preferred technical solution of the above energy storage battery system, when the energy storage battery system includes the second electronic control module, the number of the battery modules and the number of the second electronic control modules are both multiple, and the number of the battery modules is the same as the number of the second electronic control modules; the battery box power transmission terminals of the multiple battery modules are connected to the third power transmission terminals of the multiple second electronic control modules in a one-to-one correspondence, and the battery box communication terminals of the multiple battery modules are connected to the third communication terminals of the multiple second electronic control modules in a one-to-one correspondence; the fourth power transmission terminals of the multiple second electronic control modules are all connected to the second DC power transmission terminal of the second energy storage inverter, and the fourth communication terminals of the multiple second electronic control modules are all connected to the sixth communication terminal of the second energy storage inverter.
[0015] In the preferred technical solution of the above energy storage battery system, the acquisition unit includes a temperature acquisition unit, a current acquisition unit and a voltage acquisition unit.
[0016] In the case of adopting the above technical solution, when the energy storage battery system in the user's home needs to be replaced with another type of energy storage battery system, there is no need to purchase battery modules anymore, and only the corresponding electronic control module and the corresponding energy storage inverter need to be purchased. The battery modules of the original energy storage battery system can be reused, reducing the replacement cost; when the electrical components in the electronic control module of the energy storage battery system are damaged, only a new electronic control module needs to be purchased for replacement, reducing the maintenance cost.
[0017] Preferably, the battery box power transmission terminal, the first power transmission terminal, the second power transmission terminal, the third power transmission terminal, the fourth power transmission terminal, the battery box communication terminal, the first communication terminal, the second communication terminal, the third communication terminal and the fourth communication terminal are all plug-in wiring terminals.
[0018] Through such a setting, the disassembly and assembly of the electronic control module and the battery module are facilitated.
[0019] Preferably, a battery box plug-in interface is provided on the battery box, and both the battery box power transmission terminal and the battery box communication terminal are arranged in the battery box plug-in interface; a first plug-in interface adapted to the battery box plug-in interface is provided on the first electronic control box, and both the first power transmission terminal and the first communication terminal are arranged in the first plug-in interface, and the first plug-in interface is used for plugging and connecting with the battery box plug-in interface; a second plug-in interface adapted to the battery box plug-in interface is provided on the second electronic control box, and both the third power transmission terminal and the third communication terminal are arranged in the second plug-in interface, and the second plug-in interface is used for plugging with the battery box plug-in interface; when the energy storage battery system includes the first electronic control module, the first plug-in interface is plugged and connected with the battery box plug-in interface; when the energy storage battery system includes the second electronic control module, the second plug-in interface is plugged and connected with the battery box plug-in interface.
[0020] With such an arrangement, when the first plug-in interface is aligned with the battery box plug-in interface and plugged in place, the first power transmission terminal is plugged in place with the battery box power transmission terminal, and the first communication terminal is plugged in place with the battery box communication terminal; when the first plug-in interface is unplugged from the battery box plug-in interface, the first power transmission terminal is unplugged from the battery box power transmission terminal, and the first communication terminal is unplugged from the battery box communication terminal, which further facilitates the disassembly and assembly operations of the first electronic control module and the battery module; when the second plug-in interface is aligned with the battery box plug-in interface and plugged in place, the third power transmission terminal is plugged in place with the battery box power transmission terminal, and the third communication terminal is plugged in place with the battery box communication terminal; when the second plug-in interface is unplugged from the battery box plug-in interface, the third power transmission terminal is unplugged from the battery box power transmission terminal, and the third communication terminal is unplugged from the battery box communication terminal, which further facilitates the disassembly and assembly operations of the second electronic control module and the battery module. In addition, in the state where the first plug-in interface is plugged together with the battery box plug-in interface, the battery box power transmission terminal, the battery box communication terminal, the first power transmission terminal, and the first communication terminal are located in the channel formed by the first plug-in interface and the battery box plug-in interface, which plays a protective role for the battery box power transmission terminal, the battery box communication terminal, the first power transmission terminal, and the first communication terminal; in the state where the second plug-in interface is plugged together with the battery box plug-in interface, the battery box power transmission terminal, the battery box communication terminal, the third power transmission terminal, and the third communication terminal are located in the channel formed by the second plug-in interface and the battery box plug-in interface, which plays a protective role for the battery box power transmission terminal, the battery box communication terminal, the third power transmission terminal, and the third communication terminal.
[0021] Preferably, battery box power transmission terminals and battery box communication terminals are provided on each of at least two faces of the battery box. When the energy storage battery system includes a first electronic control module, the first power transmission terminal and the first communication terminal are detachably connected to the battery box power transmission terminals and battery box communication terminals on the same face of the battery box; when the energy storage battery system includes a second electronic control module, the third power transmission terminal and the third communication terminal are detachably connected to the battery box power transmission terminals and battery box communication terminals on the same face of the battery box.
[0022] With such an arrangement, when the energy storage battery system includes a first electronic control module, the placement orientations of the first electronic control module and the battery module can be determined according to the actual situation of the installation space. Then, according to the placement orientations of the first electronic control module and the battery module, the battery box power transmission terminals and battery box communication terminals on the corresponding face of the battery box are respectively connected to the first power transmission terminal and the first communication terminal; when the energy storage battery system includes a second electronic control module, the placement orientations of the second electronic control module and the battery module can be determined according to the actual situation of the installation space. Then, according to the placement orientations of the second electronic control module and the battery module, the battery box power transmission terminals and battery box communication terminals on the corresponding face of the battery box are respectively connected to the third power transmission terminal and the third communication terminal; therefore, the placement of the energy storage battery system is facilitated. Description of the Drawings
[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:
[0024] Figure 1 is a schematic structural diagram of the battery energy storage system according to the first embodiment of the present invention Figure Two
[0025] Figure 2 is a schematic structural diagram of the battery module in the battery energy storage system according to the first embodiment of the present invention Figure Two
[0026] Figure 3 is Figure 2 an enlarged view of the partial A in Figure Two
[0027] Figure 4 is a schematic structural diagram of the electronic control module in the battery energy storage system according to the first embodiment of the present invention Figure Two
[0028] Figure 5 is Figure 4 an enlarged view of the partial B in Figure Two
[0029] Figure 6 is a schematic structural diagram of the battery energy storage system according to the second embodiment of the present invention Figure Two
[0030] Figure 7 is a schematic diagram of the structure of the electronic control module in the battery energy storage system of the second embodiment of the present utility model Figure Two
[0031] Figure 8 is Figure 7 an enlarged view of the partial C in
[0032] List of reference numerals:
[0033] 1. Battery module; 11. Battery box; 12. Battery box plug-in interface; 121. Battery box power transmission terminal; 122. Battery box communication terminal; 2. Electronic control module a; 21. Electronic control box a; 22. Plug-in interface a; 221. Plug-in power transmission terminal a; 222. Plug-in communication terminal a; 23. Screwed power transmission terminal a; 24. Screwed communication terminal a; 3. Electronic control module b; 31. Electronic control box b; 32. Plug-in interface b; 321. Plug-in power transmission terminal b; 322. Plug-in communication terminal b; 33. Screwed power transmission terminal b; 34. Screwed communication terminal b; 35. Heat sink. Detailed implementation manners
[0034] First of all, those skilled in the art should understand that the implementation manners described below are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.
[0035] It should be noted that in the description of the utility model, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0036] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a direct connection or an indirect connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0037] Based on the problem that the existing household energy storage products mentioned in the background technology have relatively high replacement or maintenance costs after a period of use, the present utility model provides an energy storage battery system. The energy storage system includes one of a first electronic control module and a second electronic control module and a battery module. The battery module, the first electronic control module, and the second electronic control module are independently integrated respectively. The first electronic control module can selectively electrically connect the battery module with a first energy storage inverter so as to transmit the output voltage of the battery module to the first energy storage inverter; the second electronic control module can selectively electrically connect the battery module with a second energy storage inverter so as to boost the output voltage of the battery module and then transmit it to the second energy storage inverter; the first electronic control module and the second electronic control module can be replaced with each other.
[0038] When the energy storage battery system in a user's home needs to be replaced with another type of energy storage battery system, there is no need to purchase a battery module again. Only the corresponding electronic control module and the corresponding energy storage inverter need to be purchased. The battery module of the original energy storage battery system can be reused, reducing the replacement cost; when the electrical components in the electronic control module are damaged, only a new electronic control module needs to be purchased for replacement, reducing the maintenance cost.
[0039] The following refers to Figures 1 to 8 to introduce the energy storage battery system of the present utility model in detail. Among them, Figure 1 is the structural schematic Figure Two Figure 2 of the battery module in the battery energy storage system of the first embodiment of the present utility model Figure Two Figure 3 is Figure 2 the enlarged view of the partial A in Figure Two Figure 4 is the structural schematic of the electronic control module in the battery energy storage system of the first embodiment of the present utility model Figure Two Figure 5 is Figure 4 the enlarged view of the partial B in Figure Two Figure 6 is the structural schematic of the battery energy storage system of the second embodiment of the present utility model Figure Two Figure 7 is the structural schematic of the electronic control module in the battery energy storage system of the second embodiment of the present utility model Figure Two Figure 8 is Figure 7 the enlarged view of the partial C in.
[0040] In the first embodiment of the present utility model, as Figure 1 shown, the energy storage battery system includes a battery module 1 and an electronic control module a2. As Figures 1 to 3As shown in the figure, the battery module 1 includes a battery box 11, and a plurality of battery cells (not shown in the figure) and acquisition components (not shown in the figure) encapsulated in the battery box 11. The acquisition components include a voltage acquisition line, a current acquisition line, and a temperature acquisition line. A battery box plug-in interface 12 is provided on the front side of the battery box 11. The battery box plug-in interface 12 is a cylindrical plug-in structure protruding outward from the front side of the battery box 11. A battery box power transmission terminal 121 and a battery box communication terminal 122 are provided in the battery box plug-in interface 12. The battery box power transmission terminal 121 and the battery box communication terminal 122 are plug-in wiring terminals. The electrodes of the battery cells are connected to the battery box power transmission terminal 121 through wires, and the acquisition unit is connected to the battery box communication terminal 122 through a communication cable.
[0041] As Figure 1 , Figure 4 and Figure 5 shown in the figure, the electric control module a2 includes an electric control box a21, and a circuit breaker (not shown in the figure) and a battery management system a (not shown in the figure) encapsulated in the electric control box a21. A plug-in interface a22 is provided on the rear side of the electric control box a21. The plug-in interface a22 is a groove structure formed by being recessed inward from the rear side of the electric control box a21 and adapted to the battery box plug-in interface 12. A plug-in power transmission terminal a221 and a plug-in communication terminal a222 are provided in the plug-in interface a22. The position of the plug-in power transmission terminal a221 corresponds to the position of the battery box power transmission terminal 121, and the position of the plug-in communication terminal a222 corresponds to the position of the battery box communication terminal 122. A screw-connected power transmission terminal a23 and a screw-connected communication terminal a24 are provided on the front side of the electric control box a21. The circuit breaker is connected in series between the plug-in power transmission terminal a221 and the screw-connected power transmission terminal a23. The battery management system a is connected to the plug-in communication terminal a222, the screw-connected communication terminal a24, and the circuit breaker respectively through a communication cable.
[0042] The battery box plug-in interface 12 is inserted into the plug-in interface a22 to achieve the plug-in connection between the two. The battery box power transmission terminal 121 is plug-in connected to the plug-in power transmission terminal a221, and the battery box communication terminal 122 is plug-in connected to the plug-in communication terminal a222.
[0043] In the use state, the screw-connected power transmission terminal a23 of the electric control module a2 and the DC power transmission terminal of the energy storage converter a are respectively screwed to both ends of the same cable. The screw-connected communication terminal a24 of the electric control module a2 and one communication terminal of the energy storage converter a are respectively screwed to both ends of the same communication cable. The AC power transmission terminals of the energy storage converter a are respectively connected to the power grid and the load, and the other communication terminal of the energy storage converter a is connected to the upper computer through a communication cable.
[0044] Since there are no components in the electronic control module a2 for boosting the DC voltage output by the battery module 1, the output voltage of the electronic control module a2 connected to the battery module 1 is the same as the DC voltage output by the battery module 1. The DC voltage output by the electronic control module a2 is converted into an AC voltage by the energy storage converter a and transmitted to the load.
[0045] The electronic control module a2 can be replaced with an electronic control module having a DC-DC converter, such as the electronic control module b3 in the second embodiment of the present invention. As Figures 6 to 8 shown, the electronic control module b3 includes an electronic control box b31 and a DC-DC converter (not shown in the figure) and a battery management system b (not shown in the figure) encapsulated in the electronic control box b31. A plug-in interface b32 is provided at the rear side of the electronic control box b31. The plug-in interface b32 is a groove structure that is adapted to the battery box plug-in interface 12 and recessed inward from the rear side of the electronic control box b31. A plug-in power transmission terminal b321 and a plug-in communication terminal b322 are provided in the plug-in interface b32. The position of the plug-in power transmission terminal b321 corresponds to the position of the battery box power transmission terminal 121, and the position of the plug-in communication terminal b322 corresponds to the position of the battery box communication terminal 122. A screw-connected power transmission terminal b33 and a screw-connected communication terminal b34 are provided at the front side of the electronic control box b31. The DC-DC converter is connected in series between the plug-in power transmission terminal b321 and the screw-connected power transmission terminal b33. The battery management system b is connected to the plug-in communication terminal b322, the screw-connected communication terminal b34, and the DC-DC converter through communication cables respectively.
[0046] After the energy storage battery system has been in use for a period of time, if the user wants to replace the existing energy storage battery system with an energy storage battery system with a higher DC output voltage, the user only needs to purchase the electronic control module b3 and a matching energy storage converter b, replace the electronic control module a2 in the original energy storage battery system with the electronic control module b3, and replace the original energy storage converter a with an energy storage converter b that matches the electronic control module b3. There is no need to repurchase the battery module 1 that accounts for most of the cost, reducing the replacement cost of the battery energy storage system. When the electrical components in the electronic control module a2 are damaged, only the electronic control module a2 needs to be purchased for replacement, reducing the maintenance cost.
[0047] The battery box power transmission terminal 121 and the battery box communication terminal 122 are plug-in wiring terminals. The electronic control box a21 is provided with a plug-in power transmission terminal a221 and a plug-in communication terminal a222. The electronic control box b31 is provided with a plug-in power transmission terminal b321 and a plug-in communication terminal b322, facilitating the disassembly and assembly of the electronic control module a2, the electronic control module b3 and the battery module 1, as well as the replacement of the electronic control module a2 and the electronic control module b3.
[0048] It should be noted that this is only a relatively preferred setting method, and adjustments can be made in actual applications. For example, the power transmission terminal 121 and the communication terminal 122 of the battery box are screw terminals. The screw power transmission terminal and the screw communication terminal that are respectively screwed to the power transmission terminal 121 and the communication terminal 122 of the battery box are provided on the electronic control module a2. The screw power transmission terminal and the screw communication terminal are respectively screwed to the power transmission terminal 121 and the communication terminal 122 of the battery box. The screw power transmission terminal and the screw communication terminal that are respectively screwed to the power transmission terminal 121 and the communication terminal 122 of the battery box are provided on the electronic control module b3. In addition, the power transmission terminal 121 and the communication terminal 122 of the battery box can be arranged at the rear side, left side, right side, top or bottom of the battery box 11.
[0049] By providing a battery box plug-in interface 12 on the battery box 11, with a battery box power transmission terminal 121 and a battery box communication terminal 122 disposed within the battery box plug-in interface 12, providing a plug-in interface a22 on the electronic control box a21, with a plug-in power transmission terminal a221 and a plug-in communication terminal a222 disposed within the plug-in interface a22, providing a plug-in interface b32 on the electronic control box b31, with a plug-in power transmission terminal b321 and a plug-in communication terminal b322 disposed within the plug-in interface b32, during the plugging process between the battery box plug-in interface 12 and the plug-in interface a22, the battery box power transmission terminal 121 and the battery box communication terminal 122 are naturally respectively plugged and connected to the plug-in power transmission terminal a221 and the plug-in communication terminal a222. During the separation process between the battery box plug-in interface 12 and the plug-in interface a22, the battery box power transmission terminal 121 and the battery box communication terminal 122 are naturally respectively separated from the plug-in power transmission terminal a221 and the plug-in communication terminal a222. During the separation process between the battery box plug-in interface 12 and the plug-in interface b32, the battery box power transmission terminal 121 and the battery box communication terminal 122 are naturally respectively separated from the plug-in power transmission terminal b321 and the plug-in communication terminal b322, further facilitating the disassembly and assembly of the electronic control module a2, the electronic control module b3 and the battery module 1, as well as the replacement of the electronic control module a2 and the electronic control module b3. When the battery box plug-in interface 12 and the plug-in interface a22 are plugged together, the battery box power transmission terminal 121, the battery box communication terminal 122, the plug-in power transmission terminal a221 and the plug-in communication terminal a222 are located within the channel formed by the battery box plug-in interface 12 and the plug-in interface a22, providing a protective effect on the battery box power transmission terminal 121, the battery box communication terminal 122, the plug-in power transmission terminal a221 and the plug-in communication terminal a222. When the battery box plug-in interface 12 and the plug-in interface b32 are plugged together, the battery box power transmission terminal 121, the battery box communication terminal 122, the plug-in power transmission terminal b321 and the plug-in communication terminal b322 are located within the channel formed by the battery box plug-in interface 12 and the plug-in interface b32, providing a protective effect on the battery box power transmission terminal 121, the battery box communication terminal 122, the plug-in power transmission terminal b321 and the plug-in communication terminal b322.
[0050] It should be noted that this is only a relatively preferred setting method, and adjustments can be made in actual applications, such as not providing the battery box plug-in interface 12 on the battery box 11, not providing the plug-in interface a22 on the electronic control box a21, and not providing the plug-in interface b32 on the electronic control box b31.
[0051] In the second embodiment of the present invention, as Figures 6 to 8 shown, the battery energy storage system includes a battery module 1 and an electronic control module b3. The structure of the battery module 1 is the same as that of the battery module 1 in the first embodiment and will not be described in detail here. As Figures 6 to 8As shown, the electric control module b3 includes an electric control box b31 and a DC-DC converter (not shown in the figure) and a battery management system b (not shown in the figure) encapsulated in the electric control box b31. A plug-in interface b32 is provided on the rear side of the electric control box b31. The plug-in interface b32 is a groove structure formed by being recessed from the rear side of the electric control box b31 and adapted to the battery box plug-in interface 12. A plug-in transmission terminal b321 and a plug-in communication terminal b322 are provided in the plug-in interface b322. The position of the plug-in transmission terminal b321 corresponds to the position of the battery box transmission terminal 121, and the plug-in communication terminal b322 corresponds to the position of the battery box communication terminal 122. A screw-connected transmission terminal b33 and a screw-connected communication terminal b34 are provided on the front side of the electric control box b31. The DC-DC converter is connected in series between the plug-in transmission terminal b321 and the screw-connected transmission terminal b33. The battery management system b is connected to the plug-in communication terminal b322, the screw-in communication terminal b34 and the DC-DC converter through communication cables. A heat sink 35 is provided on the right side of the electric control box b31, and the heat sink 35 is used for heat dissipation of the electric control module b3. The battery box plug-in interface 12 is inserted into the plug-in interface b32 to realize the plug-in connection between the two, the battery box power transmission terminal 121 is plug-in connected to the plug-in power transmission terminal b321, and the battery box communication terminal 122 is plug-in connected to the plug-in communication terminal b322.
[0052] When in use, the screwed transmission terminal b33 of the electric control module b3 and the DC transmission terminal of the energy storage inverter b are screwed to the two ends of the same cable respectively, the screwed communication terminal b34 of the electric control module b3 and the communication terminal on one side of the energy storage inverter b are screwed to the two ends of the same communication cable respectively, the AC transmission terminal of the energy storage inverter b is connected to the power grid and the load respectively, and the communication terminal on the other side of the energy storage inverter b is connected to the host computer through a communication cable.
[0053] Since the electric control module b3 has a DC-DC converter, the DC voltage output by the battery module 1 is converted into a higher voltage DC voltage after being stepped up by the DC-DC converter, and the DC voltage is converted into an AC voltage through the energy storage converter and transmitted to the load. The electric control module b3 can be replaced by an electric control module without a DC-DC converter, such as the electric control module a2 in the first embodiment of the utility model. During the use stage, if the electric control module b3 fails and needs to be replaced, a new electric control module b3 can be purchased separately for replacement. During the use stage, if the electric control module b3 fails and needs to be replaced, and the remaining life of the battery module 1 is not long at this time, and the user plans not to use the battery energy storage system after the battery module 1 expires, the user can choose to purchase an electric control module without a DC-DC converter and replace it with an adapted energy storage converter a, thereby reducing the overall cost of use.
[0054] The power transmission terminal 121 of the battery box and the communication terminal 122 of the battery box are plug-in connection terminals. The plug-in power transmission terminal b321 and the plug-in communication terminal b322 are provided on the electric control box b31, and the plug-in power transmission terminal a221 and the plug-in communication terminal a222 are provided on the electric control box a21, which facilitates the disassembly and assembly of the electric control module b3, the electric control module a2 and the battery module 1, as well as the replacement of the electric control module b3 and the electric control module a2.
[0055] It should be noted that this is only a relatively preferred setting method, and adjustments can be made in actual applications. For example, the power transmission terminal 121 of the battery box and the communication terminal 122 of the battery box are screw terminals. The screw power transmission terminal and the screw communication terminal respectively screwed to the power transmission terminal 121 of the battery box and the communication terminal 122 of the battery box are provided on the electric control module b3. The screw power transmission terminal and the screw communication terminal are respectively screwed to the power transmission terminal 121 of the battery box and the communication terminal 122 of the battery box. The screw power transmission terminal and the screw communication terminal respectively screwed to the power transmission terminal 121 of the battery box and the communication terminal 122 of the battery box are provided on the electric control module a2. In addition, the power transmission terminal 121 of the battery box and the communication terminal 122 of the battery box can be arranged at the rear side, left side, right side, top or bottom of the battery box 11. In addition, the heat sink 35 may not be provided on the electric control box b31.
[0056] In another feasible embodiment, the energy storage battery system not only includes the battery module 1 and the electric control module a2 of the battery energy storage system in the first embodiment, but also includes an energy storage inverter a adapted to the electric control module a2. The energy storage inverter a has a DC power transmission terminal a, an AC power transmission terminal a, a communication terminal a and a communication terminal a'. The power transmission terminal 121 of the battery box is plug-connected to the plug-in power transmission terminal a221, and the communication terminal 122 of the battery box is plug-connected to the plug-in communication terminal a222. The screw power transmission terminal a23 and the DC power transmission terminal a of the energy storage inverter a are respectively screwed to both ends of the same cable, and the screw communication terminal a24 and the communication terminal a of the energy storage inverter a are respectively screwed to both ends of the same communication cable. The AC power transmission terminal a of the energy storage inverter a is used to connect the power grid and the load, and the communication terminal a' of the energy storage inverter a is used to connect to the upper computer.
[0057] Preferably, the number of battery modules 1 and the number of electronic control modules a2 are both multiple, and the number of battery modules 1 is the same as the number of electronic control modules a2. The battery box power transmission terminals 121 of the multiple battery modules 1 are connected to the plug-in power transmission terminals a221 of the multiple electronic control modules a2 in a one-to-one correspondence. The battery box communication terminals 122 of the multiple battery modules 1 are connected to the plug-in communication terminals a222 of the multiple electronic control modules a2 in a one-to-one correspondence. The screw-connected power transmission terminals a23 of the multiple electronic control modules a2 are all connected to the DC power transmission terminal a of the energy storage converter a. The screw-connected communication terminals a24 of the multiple electronic control modules a2 are all connected to the communication terminal a of the energy storage converter a. The AC power transmission terminal a of the energy storage converter a is used to connect to the power grid and the load, and the communication terminal a' of the energy storage converter a is used to connect to the upper computer.
[0058] In another feasible embodiment, the energy storage battery system not only includes the battery module 1 and the electronic control module b3 of the battery energy storage system in the second embodiment, but also includes an energy storage converter b adapted to the electronic control module b3. The energy storage converter b has a DC power transmission terminal b, an AC power transmission terminal b, a communication terminal b, and a communication terminal b'. The battery box power transmission terminal 121 is plugged into the plug-in power transmission terminal b321, and the battery box communication terminal 122 is plugged into the plug-in communication terminal b322. The screw-connected power transmission terminal b33 and the DC power transmission terminal b of the energy storage converter b are respectively screwed to both ends of the same cable. The screw-connected communication terminal b34 and the communication terminal b of the energy storage converter b are respectively screwed to both ends of the same communication cable. The AC power transmission terminal b of the energy storage converter b is used to connect to the power grid and the load, and the communication terminal b' of the energy storage converter b is used to connect to the upper computer.
[0059] Preferably, the number of battery modules 1 and the number of electronic control modules b3 are multiple, and the number of battery modules 1 is the same as the number of electronic control modules b3. The battery box power transmission terminals 121 of the multiple battery modules 1 are connected to the plug-in power transmission terminals b321 of the multiple electronic control modules b3 in a one-to-one correspondence. The battery box communication terminals 122 of the multiple battery modules 1 are connected to the plug-in communication terminals b322 of the multiple electronic control modules b3 in a one-to-one correspondence. The screw-connected power transmission terminals b33 of the multiple electronic control modules b3 are all connected to the DC power transmission terminal b of the energy storage converter b. The screw-connected communication terminals b34 of the multiple electronic control modules b3 are all connected to the communication terminal b of the energy storage converter b. The AC power transmission terminal b of the energy storage converter b is used to connect to the power grid and the load, and the communication terminal b' of the energy storage converter b is used to connect to the upper computer.
[0060] Preferably, in the above embodiments, the screwed power transmission terminals a23 and screwed communication terminals a24 of the electronic control module a2, as well as the screwed power transmission terminals b33 and screwed communication terminals b34 of the electronic control module b3, are all replaced with plug-in wiring terminals. The DC power transmission terminal a, communication terminal a', DC power transmission terminal b, and communication terminal b are set as plug-in wiring terminals, so that the power transmission terminals and communication terminals of the electronic control module a2 can be plugged and connected to the DC power transmission terminals and communication terminals of the energy storage converter a, and the power transmission terminals and communication terminals of the electronic control module b3 can be plugged and connected to the DC power transmission terminals and communication terminals of the energy storage converter b. In this way, the disassembly and assembly of the electronic control module and the corresponding energy storage converter are facilitated.
[0061] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.
Claims
1. A energy storage battery system, characterized in that, The energy storage battery system includes one of a first electronic control module and a second electronic control module and a battery module The battery module includes a battery box and a plurality of battery cells encapsulated in the battery box; The first electronic control module can selectively electrically connect the battery module to a first energy storage inverter so as to transmit the output voltage of the battery module to the first energy storage inverter; The second electronic control module can selectively electrically connect the battery module to a second energy storage inverter so as to boost the output voltage of the battery module and then transmit it to the second energy storage inverter; The first electronic control module and the second electronic control module can be replaced with each other.
2. The energy storage battery system according to claim 1, wherein A plurality of acquisition units are encapsulated in the battery box. A battery box power transmission terminal and a battery box communication terminal are provided on the battery box. The battery cells are connected to the battery box power transmission terminal, and the acquisition units are connected to the battery box communication terminal; The first electronic control module includes a first electronic control box and a switch and a first battery management system encapsulated in the first electronic control box. A first power transmission terminal, a second power transmission terminal, a first communication terminal, and a second communication terminal are provided on the first electronic control box. The switch is connected in series between the first power transmission terminal and the second power transmission terminal. The first battery management system is communicatively connected to the first communication terminal, the second communication terminal, and the switch. The battery box power transmission terminal can be detachably connected to the first power transmission terminal, and the battery box communication terminal can be detachably connected to the first communication terminal; The second electronic control module includes a second electronic control box and a DC-DC converter and a second battery management system encapsulated in the second electronic control box. A third power transmission terminal, a fourth power transmission terminal, a third communication terminal, and a fourth communication terminal are provided on the second electronic control box. The DC-DC converter is connected in series between the third power transmission terminal and the fourth power transmission terminal. The second battery management system is communicatively connected to the third communication terminal, the fourth communication terminal, and the DC-DC converter. The battery box power transmission terminal can be detachably connected to the third power transmission terminal, and the battery box communication terminal can be detachably connected to the third communication terminal; When the energy storage battery system includes the first electronic control module, the battery box power transmission terminal is detachably connected to the first power transmission terminal, and the battery box communication terminal is detachably connected to the first communication terminal; When the energy storage battery system includes the second electronic control module, the battery box power transmission terminal is detachably connected to the third power transmission terminal, and the battery box communication terminal is detachably connected to the third communication terminal.
3. The energy storage battery system according to claim 2, characterized in that, The battery box power transmission terminal, the first power transmission terminal, the second power transmission terminal, the third power transmission terminal, the fourth power transmission terminal, the battery box communication terminal, the first communication terminal, the second communication terminal, the third communication terminal, and the fourth communication terminal are all plug-in wiring terminals.
4. The energy storage battery system according to claim 3, wherein The battery box is provided with a battery box plug-in interface, and the battery box power transmission terminal and the battery box communication terminal are both arranged in the battery box plug-in interface; The first electric control box is provided with a first plug-in interface adapted to the battery box plug-in interface. The first power transmission terminal and the first communication terminal are both arranged in the first plug-in interface, and the first plug-in interface is used for plugging and connecting with the battery box plug-in interface; The second electric control box is provided with a second plug-in interface adapted to the battery box plug-in interface. The third power transmission terminal and the third communication terminal are both arranged in the second plug-in interface, and the second plug-in interface is used for plugging with the battery box plug-in interface; When the energy storage battery system includes the first electric control module, the first plug-in interface is plugged and connected with the battery box plug-in interface; When the energy storage battery system includes the second electric control module, the second plug-in interface is plugged and connected with the battery box plug-in interface.
5. The energy storage battery system according to claim 2, wherein The battery box power transmission terminal and the battery box communication terminal are arranged on each of at least two surfaces of the battery box; When the energy storage battery system includes the first electric control module, the first power transmission terminal and the first communication terminal are detachably connected to the battery box power transmission terminal and the battery box communication terminal on the same surface of the battery box; When the energy storage battery system includes the second electric control module, the third power transmission terminal and the third communication terminal are detachably connected to the battery box power transmission terminal and the battery box communication terminal on the same surface of the battery box.
6. The energy storage battery system according to any one of claims 2 to 5, characterized in that When the energy storage battery system includes the first electric control module, the energy storage battery system includes the first energy storage inverter, and the first energy storage inverter has a first DC power transmission terminal, a first AC power transmission terminal and a fifth communication terminal. The second power transmission terminal is detachably connected to the DC power transmission terminal, and the second communication terminal is detachably connected to the fifth communication terminal; When the energy storage battery system includes the second electric control module, the energy storage battery system includes the second energy storage inverter, and the second energy storage inverter has a second DC power transmission terminal, a second AC power transmission terminal and a sixth communication terminal. The fourth power transmission terminal is detachably connected to the second DC power transmission terminal, and the fourth communication terminal is detachably connected to the sixth communication terminal.
7. The energy storage battery system according to claim 6, wherein The first DC power transmission terminal, the first AC power transmission terminal, the fifth communication terminal, the second DC power transmission terminal, the second AC power transmission terminal and the sixth communication terminal are all plug-in wiring terminals.
8. The energy storage battery system according to claim 6, characterized in that When the energy storage battery system includes the first electric control module, the number of the battery modules and the number of the first electric control modules are both multiple, and the number of the battery modules is the same as the number of the first electric control modules; The power transmission terminals of the battery boxes of the multiple battery modules are connected to the first power transmission terminals of the multiple first electronic control modules in a one-to-one correspondence, and the communication terminals of the battery boxes of the multiple battery modules are connected to the first communication terminals of the multiple first electronic control modules in a one-to-one correspondence; The second power transmission terminals of the multiple first electronic control modules are all connected to the first DC power transmission terminal of the first energy storage inverter, and the second communication terminals of the multiple first electronic control modules are all connected to the fifth communication terminal of the first energy storage inverter.
9. The energy storage battery system according to claim 6, wherein when the energy storage battery system includes the second electronic control module, the number of the battery modules and the number of the second electronic control modules are both multiple, and the number of the battery modules is the same as the number of the second electronic control modules; The power transmission terminals of the battery boxes of the multiple battery modules are connected to the third power transmission terminals of the multiple second electronic control modules in a one-to-one correspondence, and the communication terminals of the battery boxes of the multiple battery modules are connected to the third communication terminals of the multiple second electronic control modules in a one-to-one correspondence; The fourth power transmission terminals of the multiple second electronic control modules are all connected to the second DC power transmission terminal of the second energy storage inverter, and the fourth communication terminals of the multiple second electronic control modules are all connected to the sixth communication terminal of the second energy storage inverter.
10. The energy storage battery system according to claim 2, characterized in that, The acquisition unit includes a temperature acquisition unit, a current acquisition unit, and a voltage acquisition unit.