Energy storage mechanism and energy storage device

Abstract

The application relates to the technical field of batteries, in particular to an energy storage mechanism and an energy storage device. The energy storage mechanism comprises a battery pack and a high-voltage box. In the application, the battery pack and the high-voltage box are integrally arranged, so that the installation positions required by the energy storage mechanism are more concentrated, the installation structures required by the energy storage mechanism are less, the space required by the energy storage mechanism during installation is reduced, and the installation process is more convenient, so that the application flexibility of the energy storage mechanism is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an energy storage mechanism and energy storage device. Background Technology

[0002] In related technologies, after the battery pack data is collected, it needs to be sent to the high-voltage box. The secondary BMS main control unit in the high-voltage box will issue corresponding control commands based on the collected battery pack information, thereby realizing the closing operation of the high-voltage output relay and the pre-charge relay to perform pre-charging and output high-voltage electricity.

[0003] However, this technical solution has some drawbacks: when installing the battery pack and the high-voltage box, at least two mounting structures are required to install the battery pack and the high-voltage box respectively. This not only requires a large installation space for the battery pack and the high-voltage box, but also makes the installation process cumbersome, which greatly limits its application flexibility. Utility Model Content

[0004] This application provides an energy storage mechanism that integrates a battery pack and a battery management system module, thereby at least partially solving the aforementioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, an energy storage mechanism is provided, including a battery pack and a high-voltage box;

[0006] The battery pack includes a first housing and battery modules. Both the high-voltage box and the battery modules are installed within the first housing. The high-voltage box includes a battery management system, which is electrically connected to the battery modules. Alternatively...

[0007] The high-voltage box includes a second housing and a battery management system. Both the battery pack and the battery management system are installed within the second housing, and the battery pack is electrically connected to the battery management system; or...

[0008] The battery pack includes a first housing and a battery module, the battery module being installed inside the first housing. The high-voltage box includes a second housing and a battery management system, the battery management system being installed inside the second housing. The first housing and the second housing are fixedly connected, and the battery module is electrically connected to the battery management system.

[0009] Optionally, the battery management system includes a management unit electrically connected to the battery pack, and the battery pack is capable of supplying power to the management unit;

[0010] The high-voltage box also includes an interface set for connecting external peripherals. The interface set is electrically connected to the management unit, and the battery pack can provide power to the peripherals connected to the interface set.

[0011] The management unit can control the power supply of the battery pack to peripherals connected to the interface set, and / or the management unit can interact with the peripherals connected to the interface set.

[0012] By controlling the power supply of the battery pack to external devices through the management unit, safe, stable, and efficient power supply can be achieved, improving the overall performance and reliability of the energy storage system. Furthermore, the interaction between the management unit and external devices enables efficient management and intelligent control of these devices, and also allows for the debugging and control of the energy storage system through the external devices.

[0013] Optionally, the high-voltage box further includes a DC-DC unit, and the management unit and the battery pack are both electrically connected to the DC-DC unit. The DC-DC unit can step down the voltage input to the battery pack and output it to the management unit, and can also output the stepped-down voltage to the interface set through the management unit.

[0014] The voltage stepped down by the DC-DC unit can not only be directly supplied to the management unit, but also supplied to the interface set connected to the management unit through the management unit, so as to make the circuit layout more reasonable.

[0015] Optionally, the high-voltage box further includes a switching unit, the two ends of which are electrically connected to the battery pack and the DC-DC unit respectively, so as to control the on / off connection between the battery pack and the DC-DC unit.

[0016] When the energy storage mechanism is not in use, it can disconnect the battery pack from the DC-DC unit through the switching unit to cut off power to the high-voltage box and interface assembly, thereby reducing energy consumption and waste.

[0017] Optionally, the switching unit includes a first switching branch and a first switch. The two ends of the first switching branch are electrically connected to the battery pack and the DC-DC unit, respectively. The first switch is disposed on the first switching branch and can be triggered by contact to control the connection or disconnection between the battery pack and the DC-DC unit; and / or,

[0018] The switching unit includes a second switching branch and a second switch. The two ends of the second switching branch are electrically connected to the battery pack and the DC-DC unit, respectively. The second switch is disposed on the second switching branch and can be remotely triggered to control the connection and disconnection between the battery pack and the DC-DC unit.

[0019] The first switch facilitates on-site operation and maintenance of the energy storage mechanism by staff. The second switch allows staff to control the connection between the battery pack and the DC-DC unit without needing to be physically present on-site. Furthermore, the combination of the first and second switches provides more flexible control over the connection between the battery pack and the DC-DC unit.

[0020] Optionally, the interface set includes a first communication interface for connecting an external remote control peripheral to remotely trigger the second switch; staff can control the second switch via the control peripheral without going to the site, thereby controlling the connection and disconnection between the battery pack and the DC-DC unit.

[0021] Optionally, the interface set includes:

[0022] The second communication interface is used to connect external debugging peripherals for debugging the high-voltage box. When the high-voltage box needs debugging, adjustments can be made directly through the external debugging peripherals connected via the second communication interface, making the debugging method more convenient; and / or,

[0023] The third communication interface can be used to communicate with peripheral devices, or it can be used for communication between multiple energy storage devices. The energy storage device can communicate with peripheral devices or another energy storage device through the third communication interface, so that the use of the energy storage device is more flexible and convenient.

[0024] Optionally, the interface set includes:

[0025] A charging socket is used to power peripheral devices to meet their power requirements; and / or,

[0026] A display screen interface is used to connect an external display screen, which can be used to display the information status of the energy storage device, and / or to display the operating interface of the energy storage device; and / or,

[0027] A buzzer interface for connecting an external buzzer to provide an alarm signal in case of a fault in the energy storage mechanism; and / or,

[0028] The host interface is used to connect an external host module to locate the energy storage mechanism and / or upgrade its system software, so as to facilitate its location and / or system software upgrade when the energy storage mechanism is in use.

[0029] Optionally, the high-voltage box further includes a charging and discharging unit. The management unit and the battery pack are both electrically connected to the charging and discharging unit. The battery pack can be charged or discharged through the charging and discharging unit, and the management unit can control the charging and discharging unit.

[0030] Energy storage devices can be charged or discharged through charging and discharging units, while management units can control the charging or discharging process of the energy storage device, making the charging or discharging process safer, more stable, and more efficient.

[0031] Optionally, the charging and discharging unit includes a charging and discharging positive terminal, a charging and discharging negative terminal, a first charging and discharging line, and a second charging and discharging line. The two ends of the first charging and discharging line are electrically connected to the positive terminal of the battery pack and the charging and discharging positive terminal, respectively, and the two ends of the second charging and discharging line are electrically connected to the negative terminal of the battery pack and the charging and discharging negative terminal, respectively.

[0032] The positive and negative terminals for charging and discharging can be used as the positive and negative terminals during charging or discharging, so that the energy storage mechanism only needs one set of positive and negative terminals to achieve charging and discharging, thereby reducing the production cost of the energy storage mechanism.

[0033] Optionally, the first charging and discharging circuit includes a first branch, a second branch, a direct charging switch, a pre-charging switch, and a pre-charging resistor. The two ends of the first branch are electrically connected to the positive terminal of the battery pack and the positive terminal of the charging / discharging circuit, respectively. The direct charging switch is located at the first branch. Both ends of the second branch are electrically connected to the first branch. The pre-charging switch and the pre-charging resistor are connected in series in the second branch and are both connected in parallel with the direct charging switch; and / or,

[0034] The second charging and discharging circuit includes a first branch, a second branch, a direct charging switch, a pre-charging switch, and a pre-charging resistor. The two ends of the first branch are electrically connected to the negative terminal of the battery pack and the negative terminal of the charging and discharging circuit, respectively. The direct charging switch is located at the first branch. Both ends of the second branch are electrically connected to the first branch. The pre-charging switch and the pre-charging resistor are connected in series on the second branch and are both connected in parallel with the direct charging switch.

[0035] The combination of the direct charging switch, the pre-charging switch, and the pre-charging resistor enables the energy storage mechanism to have both direct charging and pre-charging functions, thus enriching the functions of the energy storage mechanism.

[0036] Optionally, the first charging and discharging line has a fuse to improve the safety of the energy storage mechanism; and / or,

[0037] The second charging / discharging circuit has a fuse to improve the safety of the energy storage mechanism; and / or,

[0038] The first charging / discharging line has a shunt, enabling precise current measurement and protection circuitry; and / or,

[0039] The second charging and discharging line has a shunt, which can accurately measure the current and protect the circuit.

[0040] Optionally, the battery management system further includes a monitoring unit electrically connected to the management unit. The battery pack can supply power to the monitoring unit, and the monitoring unit can collect voltage information of individual cells in the battery pack, and / or, the monitoring unit can collect temperature information of the battery pack and / or the high-voltage box.

[0041] Information is collected by the monitoring unit and fed back to the management unit, so that the management unit can more accurately control the battery pack, control the power supply to external peripherals, and perform efficient management and intelligent control of the peripherals based on this information.

[0042] According to a second aspect of this application, an energy storage device is provided, comprising the energy storage mechanism described in the first aspect.

[0043] Optionally, the energy storage device includes multiple energy storage mechanisms connected in parallel, so that the energy storage device can be applied to more scenarios.

[0044] Optionally, the energy storage device includes a buzzer, which is electrically connected to the high-voltage box and can be used to provide fault alarm prompts; and / or,

[0045] The energy storage device includes a display screen, which is electrically connected to the high-voltage box and can be used to display the information status of the energy storage device, and / or to display the operation interface of the energy storage device; and / or,

[0046] The energy storage device includes a main unit module, which is electrically connected to the high-voltage box to facilitate its positioning and / or system software upgrades when the energy storage device is in use.

[0047] The energy storage mechanism of this application integrates the battery pack and the high-voltage box, making the installation location of the energy storage mechanism more concentrated and requiring fewer installation structures, thereby reducing the space required for installation and making the installation process more convenient, thus improving the application flexibility of the energy storage mechanism.

[0048] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0051] Figure 1 This is a circuit diagram of an energy storage mechanism provided in an exemplary embodiment of this disclosure;

[0052] Figure 2 yes Figure 1 A magnified view of part A of the energy storage mechanism shown;

[0053] Figure 3 yes Figure 1 The circuit diagrams of the first communication interface, the second communication interface, and the third communication structure of the energy storage mechanism are shown.

[0054] Figure 4 yes Figure 1 The circuit diagram of the charging socket for the energy storage mechanism is shown.

[0055] Figure 5 yes Figure 1 The circuit diagram of the display screen interface of the energy storage mechanism is shown.

[0056] Figure 6 yes Figure 1 The circuit diagram of the buzzer interface of the energy storage mechanism is shown.

[0057] Figure 7 yes Figure 1 The circuit diagram of the main interface of the energy storage mechanism is shown.

[0058] Figure 8 yes Figure 1 A magnified view of part B of the energy storage mechanism shown.

[0059] Explanation of reference numerals in the attached figures:

[0060] 1. Battery pack; 11. Individual battery cell;

[0061] 2. High-voltage box; 21. Battery management system; 211. Management unit; 212. Monitoring unit; 22. Interface set; 221. First communication interface; 222. Second communication interface; 223. Third communication interface; 224. Charging socket; 225. Display interface; 226. Buzzer interface; 227. Host interface; 23. Charging and discharging unit; 231. Positive charging and discharging terminal; 232. Negative charging and discharging terminal; 233. First charging and discharging circuit; 2331. First branch; 2332. Second branch; 2333. Direct charging switch; 2334. Pre-charge switch; 2335. Pre-charge resistor; 2336. Fuse; 234. Second charging and discharging circuit; 2341. Shunt; 24. DC-DC unit; 25. Switching unit; 251. First switch branch; 252. First switch; 253. Second switch branch; 254. Second switch. Detailed Implementation

[0062] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0063] According to a first aspect of this application, an energy storage mechanism is provided, which combines... Figure 1 It can be seen that the energy storage mechanism includes battery pack 1 and high-voltage box 2;

[0064] Battery pack 1 includes a first housing and battery modules. High-voltage box 2 and battery modules are both installed within the first housing, and high-voltage box 2 is electrically connected to the battery modules. High-voltage box 2 includes a second housing and a battery management system 21 (BMS). The battery management system 21 is installed within the second housing. Battery modules and the second housing containing the battery management system 21 are both installed within the first housing, and battery modules are electrically connected to the battery management system 21. Alternatively,

[0065] The high-voltage box 2 includes a second housing and a battery management system 21. Both the battery pack 1 and the battery management system 21 are installed within the second housing, and the battery pack 1 is electrically connected to the battery management system 21. Alternatively, the battery pack 1 includes a first housing and battery modules. The battery modules are installed within the first housing, and both the battery management system 21 and the first housing containing the battery modules are installed within the second housing. The battery modules are electrically connected to the battery management system 21.

[0066] The battery pack 1 includes a first housing and a battery module, the battery module being installed inside the first housing. The high-voltage box 2 includes a second housing and a battery management system 21, the battery management system 21 being installed inside the second housing. The first housing and the second housing are fixedly connected, and the battery module is electrically connected to the battery management system 21. The fixed connection between the first housing and the second housing can be one or more of welding, screwing, riveting, and snap-fitting.

[0067] For example, the battery module is composed of multiple individual battery cells 11.

[0068] In some embodiments, the battery management system 21 includes a management unit 211 (Slave Battery Management Unit, which may be abbreviated as SBMU), which is electrically connected to the battery pack 1 and the battery pack 1 can supply power to the management unit 211;

[0069] The high-voltage box 2 also includes an interface set 22, which is used to connect external peripherals. The interface set 22 is electrically connected to the management unit 211, and the battery pack 1 can provide power to the peripherals connected to the interface set 22.

[0070] The management unit 211 can control the power supply of the battery pack 1 to the peripherals connected to the interface set 22, and / or the management unit 211 can interact with the peripherals connected to the interface set 22.

[0071] The management unit 211 is part of the battery management system 21. It controls the power supply of the battery pack 1 to external peripherals, thereby achieving safe, stable, and efficient power supply and improving the overall performance and reliability of the energy storage mechanism. Furthermore, the management unit 211 interacts with external devices, enabling efficient management and intelligent control of these devices, as well as debugging and control of the energy storage mechanism via these devices.

[0072] In some embodiments, combined with Figure 2 It is known that the high voltage box 2 also includes a DC-DC unit 24. The management unit 211 and the battery pack 1 are both electrically connected to the DC-DC unit 24. The DC-DC unit 24 can step down the voltage input to the battery pack 1 and output it to the management unit 211. It can also output the stepped-down voltage to the interface set 22 through the management unit 211.

[0073] The voltage stepped down by the DC-DC unit 24 can not only be directly supplied to the management unit 211, but also supplied to the interface set 22 connected to the management unit 211 through the management unit 211, so that the circuit layout is more reasonable.

[0074] For example, after DC24-DC24 steps down the input voltage of battery pack 1, it can output a voltage of 12-24V to wake up management unit 211 and power peripherals at interface set 22.

[0075] In some embodiments, the high-voltage box 2 further includes a switching unit 25, the two ends of which are electrically connected to the battery pack 1 and the DC-DC unit 24 respectively, so as to control the on / off connection between the battery pack 1 and the DC-DC unit 24.

[0076] When the energy storage mechanism is not in use, it can be disconnected from the battery pack 1 and the DC-DC unit 24 by the switching unit 25, so as to cut off the power to the high voltage box 2 and the interface assembly 22 and reduce the consumption and waste of electrical energy.

[0077] In some embodiments, the switching unit 25 includes a first switching branch 251 and a first switch 252. The two ends of the first switching branch 251 are electrically connected to the battery pack 1 and the DC-DC unit 24, respectively. The first switch 252 is disposed on the first switching branch 251 and can be triggered by contact to control the on / off state between the battery pack 1 and the DC-DC unit 24; and / or

[0078] The switching unit 25 includes a second switching branch 253 and a second switch 254. The two ends of the second switching branch 253 are electrically connected to the battery pack 1 and the DC-DC unit 24, respectively. The second switch 254 is disposed on the second switching branch 253. The second switch 254 can be remotely triggered to control the on / off connection between the battery pack 1 and the DC-DC unit 24.

[0079] The first switch 252 facilitates on-site operation and maintenance of the energy storage mechanism by staff. The second switch 254 allows staff to control the connection between the battery pack 1 and the DC-DC unit 24 without needing to be physically present at the site. Furthermore, the combination of the first and second switches 252 provides more flexible control over the connection between the battery pack 1 and the DC-DC unit 24.

[0080] In some embodiments, combined with Figure 3 It is known that the interface set 22 includes a first communication interface 221, which is used to connect an external remote control peripheral device to remotely trigger the second switch 254. The staff does not need to go to the site to control the second switch 254 through the control peripheral device, thereby controlling the on / off of the battery pack 1 and the DC-DC unit 24.

[0081] In some embodiments, the interface set 22 includes:

[0082] The second communication interface 222 is used to connect external debugging peripherals for debugging the high-voltage box 2. When the high-voltage box 2 needs to be debugged, adjustments can be made directly through the external debugging peripherals connected to the second communication interface 222, which is more convenient; and / or,

[0083] The third communication interface 223 can be used to communicate with peripherals, or it can be used for communication between multiple energy storage units. The energy storage unit can communicate with peripherals or another energy storage device through the third communication interface 223, so that the use of the energy storage unit is more flexible and convenient.

[0084] In some embodiments, combined with Figure 4-7 It can be seen that interface set 22 also includes:

[0085] Charging socket 224 is used to power peripherals to meet their power requirements; and / or,

[0086] Display interface 225 is used to connect an external display screen, which can be used to display the information status of the energy storage device, and / or to display the operation interface of the energy storage device; and / or,

[0087] Buzzer interface 226 is used to connect an external buzzer to provide an alarm indication of a fault in the energy storage mechanism; and / or,

[0088] The host interface 227 is used to connect an external host module to locate the energy storage device and / or upgrade the system software, so as to facilitate the location and / or system software upgrade when the energy storage device is in use.

[0089] For example, the charging socket 224 can be a national standard charging socket 224; the host module connected to the host interface 227 can integrate GPS and 4G antennas to enable positioning via GPS and remote communication via 4G antenna to achieve remote system software upgrades.

[0090] In some embodiments, the high-voltage box 2 further includes a charging and discharging unit 23. The management unit 211 and the battery pack 1 are both electrically connected to the charging and discharging unit 23. The battery pack 1 can be charged or discharged through the charging and discharging unit 23, and the management unit 211 can control the charging and discharging unit 23.

[0091] The energy storage mechanism can be charged or discharged through the charging and discharging unit 23, while the management unit 211 can control the charging or discharging process of the energy storage mechanism, making the charging or discharging process safer, more stable and more efficient.

[0092] In some embodiments, the charging and discharging unit 23 includes a charging and discharging positive terminal 231, a charging and discharging negative terminal 232, a first charging and discharging line 233, and a second charging and discharging line 234. The two ends of the first charging and discharging line 233 are electrically connected to the positive terminal of the battery pack 1 and the charging and discharging positive terminal 231, respectively, and the two ends of the second charging and discharging line 234 are electrically connected to the negative terminal of the battery pack 1 and the charging and discharging negative terminal 232, respectively.

[0093] The positive and negative terminals 231 and 232 can be used as positive and negative terminals during charging and discharging, respectively, so that the energy storage mechanism only needs one set of positive and negative terminals to achieve charging and discharging, thus reducing the cost of the energy storage mechanism.

[0094] In some embodiments, combined with Figure 8 It is known that the first charging and discharging circuit 233 includes a first branch 2331, a second branch 2332, a direct charging switch 2333, a pre-charging switch 2334, and a pre-charging resistor 2335. The two ends of the first branch 2331 are electrically connected to the positive terminal and the charging / discharging positive terminal 231 of the battery pack 1, respectively. The direct charging switch 2333 is located at the first branch 2331. Both ends of the second branch 2332 are electrically connected to the first branch 2331. The pre-charging switch 2334 and the pre-charging resistor 2335 are connected in series on the second branch 2332 and are both connected in parallel with the direct charging switch 2333; and / or,

[0095] The second charging and discharging circuit 234 includes a first branch 2331, a second branch 2332, a direct charging switch 2333, a pre-charging switch 2334, and a pre-charging resistor 2335. The two ends of the first branch 2331 are electrically connected to the negative terminal and the charging / discharging negative terminal 232 of the battery pack 1, respectively. The direct charging switch 2333 is located at the first branch 2331. Both ends of the second branch 2332 are electrically connected to the first branch 2331. The pre-charging switch 2334 and the pre-charging resistor 2335 are connected in series on the second branch 2332 and are both connected in parallel with the direct charging switch 2333.

[0096] The combination of the direct charging switch 2333, the pre-charging switch 2334, and the pre-charging resistor 2335 enables the energy storage mechanism to have both direct charging and pre-charging functions, thus enriching the functions of the energy storage mechanism.

[0097] For example, both the precharge switch 2334 and the direct charge switch 2333 mentioned above are relay switches.

[0098] In some embodiments, the first charging / discharging line 233 has a fuse 2336 to improve the safety of the energy storage mechanism; and / or,

[0099] The second charging / discharging circuit 234 has a fuse 2336 to enhance the safety of the energy storage mechanism; and / or,

[0100] The first charging / discharging circuit 233 has a shunt 2341, which can accurately measure current and protect the circuit; and / or,

[0101] The second charging / discharging circuit 234 has a shunt 2341, which can accurately measure the current and protect the circuit.

[0102] In some embodiments, the battery management system 21 further includes a monitoring unit 212 (Voltage Control Monitoring Unit, which may be abbreviated as VCMU). The monitoring unit 212 is electrically connected to the management unit 211. The battery pack 1 can supply power to the monitoring unit 212, and the monitoring unit 212 can collect voltage information of individual cells 11 in the battery pack 1, and / or, the monitoring unit 212 can collect temperature information of the battery pack 1 and / or the high-voltage box 2.

[0103] The monitoring unit 212 is part of the battery management system 21. The monitoring unit 212 collects information and feeds it back to the management unit 211, so that the management unit 211 can more accurately control the battery pack 1, control the power supply to external peripherals, and perform efficient management and intelligent control of the peripherals based on this information.

[0104] For example, the battery pack 1 has a voltage sensor, and the monitoring unit 212 uses the voltage sensor to collect voltage information of the individual cells 11 in the battery pack 1; the battery pack 1 and / or the high voltage box 2 have a temperature sensor, and the monitoring unit 212 uses the temperature sensor to obtain temperature information.

[0105] According to a second aspect of this application, an energy storage device is provided, including the energy storage mechanism of the first aspect.

[0106] In some embodiments, the energy storage device includes multiple energy storage units connected in parallel, so that the energy storage device can be applied to more scenarios.

[0107] In some embodiments, the energy storage device includes a buzzer electrically connected to the high-voltage box 2, which can be used to provide fault alarm prompts; and / or,

[0108] The energy storage device includes a display screen, which is electrically connected to the high-voltage box 2. The display screen can be used to show the information status of the energy storage device, and / or to show the operating interface of the energy storage device; and / or...

[0109] The energy storage device includes a main module, which is electrically connected to the high-voltage box 2 to facilitate its positioning and / or system software upgrades when the energy storage device is in use.

[0110] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0111] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0112] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0113] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An energy storage mechanism, characterized in that, Includes battery packs and high-voltage boxes; The battery pack includes a first housing and battery modules. Both the high-voltage box and the battery modules are installed within the first housing. The high-voltage box includes a battery management system, which is electrically connected to the battery modules. Alternatively... The high-voltage box includes a second housing and a battery management system. Both the battery pack and the battery management system are installed within the second housing, and the battery pack is electrically connected to the battery management system; or... The battery pack includes a first housing and a battery module, the battery module being installed inside the first housing. The high-voltage box includes a second housing and a battery management system, the battery management system being installed inside the second housing. The first housing and the second housing are fixedly connected, and the battery module is electrically connected to the battery management system.

2. The energy storage mechanism according to claim 1, characterized in that, The battery management system includes a management unit, which is electrically connected to the battery pack, and the battery pack is capable of supplying power to the management unit. The high-voltage box also includes an interface set for connecting external peripherals. The interface set is electrically connected to the management unit, and the battery pack can provide power to the peripherals connected to the interface set. The management unit can control the power supply of the battery pack to peripherals connected to the interface set, and / or the management unit can interact with the peripherals connected to the interface set.

3. The energy storage mechanism according to claim 2, characterized in that, The high-voltage box also includes a DC-DC unit. The management unit and the battery pack are both electrically connected to the DC-DC unit. The DC-DC unit can step down the voltage input from the battery pack and output it to the management unit. It can also output the stepped-down voltage to the interface set through the management unit.

4. The energy storage mechanism according to claim 3, characterized in that, The high-voltage box also includes a switching unit, the two ends of which are electrically connected to the battery pack and the DC-DC unit respectively, so as to control the on / off connection between the battery pack and the DC-DC unit.

5. The energy storage mechanism according to claim 4, characterized in that, The switching unit includes a first switching branch and a first switch. The two ends of the first switching branch are electrically connected to the battery pack and the DC-DC unit, respectively. The first switch is disposed on the first switching branch and can be triggered by contact to control the on / off connection between the battery pack and the DC-DC unit. And / or, The switching unit includes a second switching branch and a second switch. The two ends of the second switching branch are electrically connected to the battery pack and the DC-DC unit, respectively. The second switch is disposed on the second switching branch and can be remotely triggered to control the connection and disconnection between the battery pack and the DC-DC unit.

6. The energy storage mechanism according to claim 5, characterized in that, The interface set includes a first communication interface, which is used to connect an external remote control peripheral device to remotely trigger the second switch.

7. The energy storage mechanism according to claim 2, characterized in that, The interface set includes: A second communication interface is used to connect external debugging peripherals for debugging the high-voltage box; and / or, A third communication interface, which can be used to communicate with peripheral devices, or the third communication interface can be used for communication between multiple energy storage devices.

8. The energy storage mechanism according to claim 2, characterized in that, The interface set includes: A charging socket for supplying power to peripheral devices; and / or, Display interface for connecting an external display screen; and / or, Buzzer interface for connecting an external buzzer; and / or, A host interface is used to connect an external host module to locate the energy storage mechanism and / or upgrade the system software.

9. The energy storage mechanism according to any one of claims 2-8, characterized in that, The high-voltage box also includes a charging and discharging unit. The management unit and the battery pack are both electrically connected to the charging and discharging unit. The battery pack can be charged or discharged through the charging and discharging unit, and the management unit can control the charging and discharging unit.

10. The energy storage mechanism according to claim 9, characterized in that, The charging and discharging unit includes a charging and discharging positive terminal, a charging and discharging negative terminal, a first charging and discharging line, and a second charging and discharging line. The two ends of the first charging and discharging line are electrically connected to the positive terminal of the battery pack and the charging and discharging positive terminal, respectively. The two ends of the second charging and discharging line are electrically connected to the negative terminal of the battery pack and the charging and discharging negative terminal, respectively.

11. The energy storage mechanism according to claim 10, characterized in that, The first charging / discharging circuit includes a first branch, a second branch, a direct charging switch, a pre-charging switch, and a pre-charging resistor. The two ends of the first branch are electrically connected to the positive terminal of the battery pack and the positive terminal of the charging / discharging circuit, respectively. The direct charging switch is located at the first branch. Both ends of the second branch are electrically connected to the first branch. The pre-charging switch and the pre-charging resistor are connected in series in the second branch and are both connected in parallel with the direct charging switch; and / or, The second charging and discharging circuit includes a first branch, a second branch, a direct charging switch, a pre-charging switch, and a pre-charging resistor. The two ends of the first branch are electrically connected to the negative terminal of the battery pack and the negative terminal of the charging and discharging circuit, respectively. The direct charging switch is located at the first branch. Both ends of the second branch are electrically connected to the first branch. The pre-charging switch and the pre-charging resistor are connected in series on the second branch and are both connected in parallel with the direct charging switch.

12. The energy storage mechanism according to claim 10, characterized in that, The first charging / discharging line has a fuse; and / or, The second charging / discharging circuit has a fuse; and / or, The first charging / discharging line has a shunt; and / or, The second charging and discharging line has a shunt.

13. The energy storage mechanism according to any one of claims 2-8, characterized in that, The battery management system further includes a monitoring unit, which is electrically connected to the management unit. The battery pack can supply power to the monitoring unit, and the monitoring unit can collect voltage information of individual cells in the battery pack, and / or, the monitoring unit can collect temperature information of the battery pack and / or the high-voltage box.

14. An energy storage device, characterized in that, Includes the energy storage mechanism described in any one of claims 1-13.

15. The energy storage device according to claim 14, characterized in that, The energy storage device includes multiple energy storage mechanisms, which are connected in parallel.

16. The energy storage device according to claim 14, characterized in that, The energy storage device includes a buzzer, which is electrically connected to the high-voltage box; and / or, The energy storage device includes a display screen, which is electrically connected to the high-voltage box; and / or, The energy storage device includes a main module, which is electrically connected to the high-voltage box.

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