Battery box body, battery pack, power battery and electric equipment

Abstract

The utility model provides a battery box body, a battery pack, a power battery and electric equipment, the box body comprises a box body shell, a battery compartment for accommodating the battery is arranged in the box body shell, and one side of the battery compartment is opened; the first turned edge is arranged on one side, close to the opening of the battery compartment, of the peripheral wall of the box body shell and is turned towards one side of the exterior of the battery compartment; the second turned edge is arranged on one side, close to the bottom wall of the battery compartment, of the peripheral wall of the box body shell and is turned towards one side of the exterior of the battery compartment; the boss is arranged on the first turned-over edge and protrudes out of the plane where the first turned-over edge is located in the first direction, and the first direction is perpendicular to the bottom wall of the battery bin; the groove is formed in the second flange and corresponds to the boss; wherein the first flanging and the second flanging are correspondingly provided with through holes, and the through holes are used for connecting screw rods to pass through, so that the connection of two adjacent battery box bodies is realized. The system provided by the utility model has the advantages of modularized flexible combination, strong expansibility, rapid longitudinal boosting and transverse expansion and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, and in particular to a battery box, a battery pack, a power battery and electrical equipment. Background Art

[0002] The battery box of an engineering vehicle not only has to accommodate all the cells and management systems, but also has to withstand the weight of the battery box and damage from collisions in the direction and lateral direction of the vehicle. In addition, it also needs to meet relevant standards such as waterproof, fireproof, and dustproof. Highly reliable battery boxes are undoubtedly the focus of attention. In related technologies, the connection structure between battery boxes is complex, and it is difficult to achieve rapid installation and disassembly, which makes it difficult to meet the needs in actual applications. Utility Model Content

[0003] The utility model provides a battery box, a battery pack, a power battery and an electric device, which are used to solve the defects that the connection structure between the existing battery boxes is complicated, the fast installation and disassembly cannot be achieved, and it is difficult to meet the needs in practical applications.

[0004] A battery case provided according to the first aspect of the utility model comprises: a case shell, a battery compartment for accommodating batteries is arranged inside the case shell, and the battery compartment is open on one side; a first flange is arranged on the side of the peripheral wall of the case shell close to the open side of the battery compartment, and is flipped toward the outside of the battery compartment; a second flange is arranged on the side of the peripheral wall of the case shell close to the bottom wall of the battery compartment, and is flipped toward the outside of the battery compartment; a boss is arranged on the first flange, and protrudes out of the plane where the first flange is located along a first direction, and the first direction is perpendicular to the bottom wall of the battery compartment; a groove is arranged on the second flange corresponding to the boss; wherein the first flange and the second flange are correspondingly provided with through holes, and the through holes are used for the passage of connecting screws to achieve the connection of two adjacent battery cases.

[0005] According to an embodiment of the utility model, it also includes: a positioning pin, which is arranged on the first flange and protrudes from the plane where the first flange is located along the first direction; and a positioning hole, which is arranged on the second flange corresponding to the positioning pin.

[0006] Specifically, this embodiment provides an implementation of a positioning pin and a positioning hole.

[0007] According to one embodiment of the utility model, it also includes: a mounting plate, which is detachably arranged at the end of the box shell along a second direction, and the plane where the second direction is located is perpendicular to the plane where the first direction is located; a mounting hole, which is arranged at the end of the box shell on one side of which the mounting plate is installed, and is used for installing a connector; a cover plate, which is detachably arranged at the end of the box shell and is used to cover the mounting plate and the connector; and a side plate, which is detachably connected to the two side walls of the box shell.

[0008] Specifically, this embodiment provides an implementation of a mounting plate, a mounting hole, a cover plate, and a side plate.

[0009] According to the second aspect of the present invention, a battery pack is provided, comprising: a connecting screw and at least two of the above-mentioned battery boxes; the connecting screw is placed in the through hole of the battery box to achieve connection between two adjacent battery boxes.

[0010] According to an implementation manner of the utility model, two adjacent battery boxes are positioned by means of positioning pins and positioning holes.

[0011] Specifically, this embodiment provides an implementation of a battery box connection form.

[0012] A power battery provided according to a third aspect of the utility model comprises at least two of the above-mentioned battery packs, wherein the battery packs are stacked.

[0013] According to a fourth aspect of the present invention, an electrical device is provided, comprising:

[0014] The battery box mentioned above;

[0015] Or, the battery pack as described above;

[0016] Alternatively, the power battery mentioned above.

[0017] According to an implementation mode of the utility model, the electrical equipment is any one of an energy storage system, an engineering vehicle, and an engineering machinery.

[0018] Specifically, this embodiment provides an implementation of an electrical device.

[0019] According to one embodiment of the utility model, the electrical equipment is an energy storage system, which includes at least one battery cluster; the battery cluster includes a stacked thermal management module, a box module and at least one of the above-mentioned battery packs; the thermal management module is respectively connected to the box module and the battery pack through a cooling pipeline, and is used to provide cooling and / or heat to the box module and the battery pack; an electrical component is arranged in the box module, and the electrical component is connected to at least the thermal management module and the battery pack; wherein any two of the battery clusters are electrically connected, and the thermal management module of each battery cluster operates independently.

[0020] According to an embodiment of the utility model, the thermal management module, the box module and the battery pack are all provided with mounting positions that cooperate with the connecting screws, and the connecting screws are used to achieve the connection between the thermal management module, the box module and the battery pack.

[0021] Specifically, this embodiment provides an implementation of a connecting screw.

[0022] According to one embodiment of the utility model, the thermal management module includes: a cooling shell and a cooling power unit; the cooling power unit is arranged in the cooling shell; the cooling pipeline is connected to the cooling power unit, and the cooling pipeline forms a loop between the box module and the battery pack, which is used to provide cold and / or heat to the box module and the battery pack.

[0023] Specifically, this embodiment provides an implementation method for cooling a housing and cooling a power unit.

[0024] The above one or more technical solutions in the utility model have at least one of the following technical effects: the utility model provides a battery case, a battery pack, a power battery and an electrical equipment, by arranging a first and a second outward-turned flange on the outer periphery of the case shell, and arranging a through hole for a common connecting screw to pass through on the first and second flanges, as well as a boss and a groove, so as to realize the connection and sealing of adjacent case shells, and at the same time, the battery case is arranged as a modular structure, which is convenient for transportation, installation and disassembly, can be modularly and flexibly combined, has strong expansibility, and can quickly increase the voltage vertically and expand the capacity horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is one of the schematic diagrams of the assembly relationship of the battery box provided by the utility model;

[0027] Figure 2 This is the second schematic diagram of the assembly relationship of the battery box provided by the utility model;

[0028] Figure 3 This is the third schematic diagram of the assembly relationship of the battery box provided by the utility model;

[0029] Figure 4 This is the fourth schematic diagram of the assembly relationship of the battery box provided by the utility model;

[0030] Figure 5 This is the fifth schematic diagram of the assembly relationship of the battery box provided by the utility model;

[0031] Figure 6 This is one of the schematic diagrams of the assembly relationship of the battery pack provided by the utility model;

[0032] Figure 7 This is the second schematic diagram of the assembly relationship of the battery pack provided by the utility model;

[0033] Figure 8 This is the third schematic diagram of the assembly relationship of the battery pack provided by the utility model;

[0034] Fig. 9 This is the fourth schematic diagram of the assembly relationship of the battery pack provided by the utility model;

[0035] Fig.10 This is the fifth schematic diagram of the assembly relationship of the battery pack provided by the utility model;

[0036] Fig.11 It is a schematic diagram of the assembly relationship of the power battery provided by the utility model;

[0037] Fig.12 It is one of the schematic diagrams of arrangement relationship of electrical equipment provided by the utility model.

[0038] Reference numerals:

[0039] 10. Thermal management module; 11. Cooling pipeline; 12. Cooling shell; 13. Cooling power unit; 20. Box module; 21. Electrical component; 22. Shell; 23. Box door; 24. Integrated tray; 30. Battery pack; 40. Connecting screw; 50. Connecting copper bus; 60. Control signal line; 70. Insulating glue layer; 80. Box shell; 90. First flange; 100. Second flange; 110. Boss; 120. Groove; 130. Through hole; 140. Locating pin; 150. Locating hole; 160. Mounting plate; 170. Mounting hole; 180. Cover plate; 190. Side plate; 200. Battery cluster; N, first direction; M, second direction. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] The present invention will be described in detail below in conjunction with specific implementation methods.

[0043] In some specific embodiments of the present invention, Figures 1 to 5As shown, the present solution provides a battery case, comprising: a case shell 80, wherein a battery compartment for accommodating batteries is arranged inside the case shell 80, and the battery compartment is open on one side; a first flange 90, which is arranged on the side of the peripheral wall of the case shell 80 close to the open side of the battery compartment, and is flipped toward the outside of the battery compartment; a second flange 100, which is arranged on the side of the peripheral wall of the case shell 80 close to the bottom wall of the battery compartment, and is flipped toward the outside of the battery compartment; a boss 110, which is arranged on the first flange 90, and protrudes from the plane where the first flange 90 is located along a first direction N, and the first direction N is perpendicular to the bottom wall of the battery compartment; a groove 120, which is arranged on the second flange 100 corresponding to the boss 110; wherein the first flange 90 and the second flange 100 are correspondingly provided with a through hole 130, and the through hole 130 is used for the passage of the connecting screw 40 to achieve the connection between two adjacent battery cases.

[0044] It should be noted that the utility model realizes the connection between adjacent box shells 80 by arranging outward-turned first flanges 90 and second flanges 100 on the outer periphery of the box shell 80, and arranging through holes 130 for the common connecting screws 40 to pass through on the first flanges 90 and the second flanges 100. At the same time, the battery box is arranged as a modular structure, which is convenient for transportation, installation and disassembly. It can be flexibly combined in a modular manner, has strong expansibility, and can quickly increase the voltage vertically and expand the capacity horizontally.

[0045] Furthermore, the design of the battery box of the utility model has the advantages of good module interchangeability, convenient maintenance, moderate module size, and more convenient transfer, lifting, and transportation.

[0046] In addition, by providing the boss 110 and the groove 120 , sealing between adjacent box shells 80 is achieved, thereby preventing the sprayed water from entering the box shells 80 .

[0047] In a possible embodiment, a sealing ring is further included, and the sealing ring is disposed between the boss 110 and the groove 120 to achieve sealing after the boss 110 and the groove 120 of adjacent box shells 80 are connected.

[0048] In some possible implementations of the present invention, it further includes: a positioning pin 140, which is arranged on the first flange 90 and protrudes from the plane where the first flange 90 is located along the first direction N; and a positioning hole 150, which is arranged on the second flange 100 corresponding to the positioning pin 140.

[0049] Specifically, this embodiment provides an implementation method of a positioning pin 140 and a positioning hole 150. By setting a positioning pin 140 on the first flange 90 and setting a positioning hole 150 corresponding to the positioning pin 140 on the second flange 100, adjacent box shells 80 can be quickly positioned through the alignment between the positioning pin 140 and the positioning hole 150, thereby improving installation efficiency.

[0050] In some possible embodiments of the present invention, it also includes: a mounting plate 160, which is detachably arranged at the end of the box shell 80 along the second direction M, and the plane where the second direction M is located is perpendicular to the plane where the first direction N is located; a mounting hole 170, which is arranged at the end of the box shell 80 on one side of which the mounting plate 160 is installed, for installing a connector; a cover plate 180, which is detachably arranged at the end of the box shell 80, for shielding the mounting plate 160 and the connector; and a side plate 190, which is detachably connected to the two side walls of the box shell 80.

[0051] Specifically, this embodiment provides an implementation method of a mounting plate 160, a mounting hole 170, a cover plate 180 and a side plate 190. The setting of the mounting plate 160 and the mounting hole 170 provides an installation position for the installation of components such as connectors at the end of the box shell 80, and the detachable connection of the mounting plate 160 can realize the replacement of the mounting plate 160 according to connectors of different specifications or connection requirements, without the need for frequent changes in the box processing method.

[0052] Furthermore, the provision of the cover plate 180 can provide certain protection for the connector installed at the end of the box shell 80, and the provision of the side plate 190 plays a role in the appearance decoration and heat insulation of the box shell 80.

[0053] In a possible embodiment, the connection position between the mounting plate 160 and the box shell 80 can be sealed by gluing.

[0054] In some specific embodiments of the present invention, Figures 1 to 10 As shown, the present solution provides a battery pack, comprising: a connecting screw 40 and at least two of the above-mentioned battery cases; the connecting screw 40 is placed in a through hole 130 of the battery case to achieve connection between two adjacent battery cases.

[0055] It should be noted that the utility model realizes the stacking of multiple battery boxes through the setting of the connecting screw 40, has better longitudinal boosting capability, and flexible energy combination. When different battery cells are used and there is a boosting requirement, a reasonable number of stacking layers of battery packs 30 can be selected to achieve different voltage requirements. The layout is more compact, the space utilization rate is high, the energy density is high, the footprint is small, and it is not restricted by the site, cooling equipment, and pipeline layout.

[0056] In some possible implementations of the present invention, two adjacent battery boxes are positioned by means of positioning pins 140 and positioning holes 150 .

[0057] Specifically, this embodiment provides an implementation method for the battery case connection form. By setting a connecting screw 40, the connection between multiple battery cases is achieved. During the connection process, the positioning pins 140 and the positioning holes 150 are used to achieve rapid positioning between adjacent battery cases.

[0058] In some specific embodiments of the present invention, Fig.11 As shown, the present solution provides a power battery, comprising at least two battery packs 30, and the battery packs 30 are stacked.

[0059] It should be noted that the power battery of the present invention can be formed by stacking a plurality of battery packs 30 in series, or can be formed by connecting at least two battery packs 30 in parallel and then stacking a plurality of at least two battery packs 30 in parallel in series.

[0060] In some specific embodiments of the present invention, Figures 1 to 11 As shown, the present solution provides an electrical device, including: the above-mentioned battery box; or, the above-mentioned battery pack; or, the above-mentioned power battery.

[0061] In some possible implementations of the present invention, the electrical equipment is any one of an energy storage system, an engineering vehicle, and an engineering machinery.

[0062] Specifically, this embodiment provides an implementation of an electrical device.

[0063] In some specific embodiments of the present invention, Figures 1 to 10 , Fig.12 As shown, the present solution provides an electrical device, which is an energy storage system, and the energy storage system includes at least one battery cluster 200; each battery cluster 200 includes a stacked thermal management module 10, a box module 20 and at least one of the above-mentioned battery packs 30; the thermal management module 10 is connected to the box module 20 and the battery pack 30 respectively through a cooling pipe 11, and is used to provide cooling and / or heat to the box module 20 and the battery pack 30; an electrical component 21 is arranged in the box module 20, and the electrical component 21 is connected to at least the thermal management module 10 and the battery pack 30; wherein any two battery clusters 200 are electrically connected, and the thermal management module 10 of each battery cluster 200 operates independently.

[0064] It should be noted that the cluster-controlled energy storage technology adopted by the present invention converts DC power into AC power through multiple smaller-capacity converters after converging DC power. The present invention has the advantage that the failure of a single converter will not affect the entire system; cluster-controlled energy storage technology is an important technology for realizing the application of large-scale energy storage systems. Unlike centralized energy storage, it adopts cluster control and cluster management methods, which can effectively avoid the "short board effect" caused by capacity mismatch and uneven consistency of the battery pack 30, thereby providing a longer constant power output. Cluster-controlled energy storage technology can realize flexible investment and withdrawal control of the battery pack 30, automatic maintenance of the plug-in box, and improve the overall efficiency of the energy storage system.

[0065] Furthermore, by configuring the battery cluster 200 as a modular thermal management module 10, a box module 20 and a battery pack 30, a flexible modular combination is achieved, and a single cluster has a single control with independent cooling, so that each battery cluster 200 is highly independent. The battery clusters 200 are electrically connected, the structural logic is simple, and production organization is convenient. It has better longitudinal boost and lateral energy scalability, and the customer can assemble the modules on site.

[0066] Furthermore, the utility model solves the problem of centralized water cooling and increased costs in existing cluster-controlled energy storage technologies by using single-cluster single-control and independent cooling for each cluster.

[0067] In addition, the battery cluster 200 of the present invention has better longitudinal boost capability and flexible energy combination through modular stacking setting, single cluster single control and independent cooling. When different battery cells are used and there is a boost requirement, a reasonable number of battery pack 30 stacking layers can be selected to achieve different voltage requirements. The layout is more compact, the space utilization rate is high, the energy density is high, the footprint is small, and it is not restricted by the site, cooling equipment, and pipeline layout.

[0068] In addition, the utility model adopts direct stacking in structure, has no large box structure, removes the traditional frame box structure, is free from the limitations of the traditional frame structure, adopts direct stacking of modules, has lower cost, does not have the installation operation in the limited shell space, and is more convenient to assemble. The stacked battery cluster 200 can be rapidly expanded horizontally as needed.

[0069] It should also be noted that the cluster-controlled energy storage technology of the utility model has the advantage of high reliability. It adopts a distributed architecture and single-box single-module fire isolation to achieve cabin-level partitioning, cabin-level pressure relief and explosion relief. A single cluster failure or a single battery pack 30 failure will not affect the overall operation, and the system is more reliable.

[0070] Furthermore, the thermal management module 10, the battery pack 30, and the box module 20 each have good consistency and interchangeability. When a single module fails, it can be quickly disassembled and replaced, and the single box can be repaired or replaced. The entire cluster can also be replaced. After-sales maintenance is convenient, and background monitoring can be achieved, fault warnings can be performed, fault locations or modules can be analyzed, accessories can be prepared in advance, and maintenance cycles can be shortened.

[0071] In some possible embodiments of the present invention, the thermal management module 10 , the box module 20 and the battery pack 30 are all provided with mounting positions that cooperate with the connecting screws 40 , and the connecting screws 40 are used to achieve the connection between the thermal management module 10 , the box module 20 and the battery pack 30 .

[0072] Specifically, this embodiment provides an implementation method of a connecting screw 40. By setting the connecting screw 40, the thermal management module 10, the box module 20 and the battery pack 30 in a single cluster are connected, which is convenient for transportation, installation and disassembly. It can be modularly and flexibly combined, has strong scalability, and can quickly boost vertically and expand horizontally.

[0073] It should be noted that the purely modular design provided by the present invention has the advantages of good module interchangeability, convenient maintenance, moderate module size, and more convenient transfer, lifting, and transportation.

[0074] Furthermore, when a fault occurs, a single cluster or a single module can be replaced as a whole and spare parts can be prepared, and the after-sales fault handling cycle is short.

[0075] In some possible embodiments of the utility model, the thermal management module 10 includes: a cooling shell 12 and a cooling power unit 13; the cooling power unit 13 is arranged in the cooling shell 12; the cooling pipe 11 is connected to the cooling power unit 13, and the cooling pipe 11 forms a loop between the box module 20 and the battery pack 30, which is used to provide cold and / or heat to the box module 20 and the battery pack 30.

[0076] Specifically, this embodiment provides an implementation of a cooling shell 12 and a cooling power unit 13. The setting of the cooling shell 12 provides an installation space for the cooling power unit 13. The cooling power unit 13 transfers cold and / or heat to multiple battery packs 30 and a box module 20 through a cooling pipe 11, thereby achieving cooling or heating of the battery packs 30 and the box module 20.

[0077] Furthermore, a cooling circuit forms a loop between the box module 20 and the battery pack 30, thereby achieving uniform distribution of cold and / or heat, reducing system energy loss, improving cooling efficiency, and simplifying the cooling control loop.

[0078] In a possible embodiment, the thermal management module 10 provided by the present invention is liquid-cooled, and the coolant is respectively delivered to the battery pack 30 and the box module 20 through a cooling circuit for heat exchange.

[0079] In a possible embodiment, the thermal management module 10 provided by the present invention is air-cooled, and the low-temperature airflow is respectively delivered to the battery pack 30 and the box module 20 through a cooling circuit for heat exchange.

[0080] In some possible embodiments of the utility model, the box module 20 includes: a shell 22, a box door 23 and an integrated tray 24; the shell 22 is arranged adjacent to the thermal management module 10 and / or the battery pack 30; the box door 23 is movably arranged at one side end of the shell 22; the integrated tray 24 is slidably arranged inside the shell 22 at the end where the box door 23 is located, and is used to place the electrical components 21.

[0081] Specifically, this embodiment provides an implementation of a shell 22, a box door 23 and an integrated tray 24, and all electrical components 21 are installed on the integrated tray 24. The integrated tray 24 adopts a pull-out structure, which is convenient for later maintenance and inspection, or the entire integrated tray 24 can be pulled out for replacement in case of failure, while the overall battery pack 30, water cooling module and box module 20 do not need to be replaced and are not affected.

[0082] In a possible embodiment, the box module 20 is composed of a shell 22, a box door 23 and an integrated tray 24. The box module 20 is mainly a supporting structure of the entire energy storage system. There are 4 to 6 threaded holes arranged around it for connecting with the battery pack 30. The connecting screw 40 passes through the thermal management module 10, and multiple battery packs 30 are connected to the threaded holes of the shell 22. The box module 20 also plays the role of protecting the integrated tray 24. All electrical components are installed on the integrated tray 24. The integrated tray 24 adopts a retractable structure, which is convenient for later maintenance, inspection and replacement. The box door 23 protects the electrical components 21 of the integrated tray 24 from rain and dust when the system is working normally and avoids electrical damage. It can be opened for operation when maintenance and inspection are required.

[0083] Furthermore, all electrical components 21 are integrated and installed on the integrated tray 24, and realize single-cluster charging and discharging, battery temperature management, energy conversion, and convergence control, and are connected to the external power grid through cables at the bottom to realize internal charging or external discharging.

[0084] In a possible embodiment, the electrical component 21 includes a PCS unit, an EMS unit, a BMS unit and a high-voltage box. The PCS unit is an energy conversion unit of multiple battery packs 30, used to regulate the conversion between AC and DC; the EMS unit is a management unit of multiple battery packs 30, used to manage the operation of the battery packs 30; the BMS unit is a control unit of multiple battery packs 30, used to control the charging and discharging of the battery packs 30; the integrated design of the PCS unit, the EMS unit, the BMS unit and the high-voltage box has the advantage of lower overall procurement cost; high energy density, no additional space for high-voltage boxes or other systems is required, high space utilization, high energy density, and small footprint.

[0085] Furthermore, according to the structural layout requirements, the PCS unit, BMS unit, EMS unit and high-voltage box are all integrated into a housing 22 to form an integrated module of control, energy conversion and battery management, thereby improving space utilization and energy density, simplifying control logic and reducing costs.

[0086] It should be noted that PCS is a power storage inverter, the full spelling of which is Power Conversion System. It is a device used to control the charging and discharging process of the battery, and it can realize the conversion of AC and DC power.

[0087] EMS is the abbreviation of Energy Management System. The energy storage management system can monitor and manage energy storage equipment in real time, including battery packs, supercapacitors, etc., to ensure their normal operation and performance.

[0088] BMS is the abbreviation of Battery Management System. Energy storage BMS refers to the subsystem used to manage the battery energy storage system, including battery charging, discharging, temperature, voltage and other parameter monitoring, SOC (Stat of Charge), SOH (State of Health) estimation and protection measures.

[0089] In a possible embodiment, the energy conversion logic of the utility model is as follows: when charging, the AC power enters from the bottom of the cabinet, passes through the AC circuit, LCL filtering, and power unit inversion, and is connected to the battery cluster 200 through the DC circuit. When discharging in the reverse direction, the load is supplied through power unit inversion, LCL filtering, and AC circuit.

[0090] In some possible implementations of the present invention, each battery cluster 200 further includes: connecting copper bars 50 that pass through the plurality of battery packs 30 and are connected to the box module 20 .

[0091] Specifically, this embodiment provides an implementation method of connecting the copper busbar 50 . By setting the connecting copper busbar 50 , the battery packs 30 in a single cluster are connected and connected to the box module 20 , thereby achieving the voltage superposition and convergence between the battery packs 30 .

[0092] In some possible implementations of the present invention, each battery cluster 200 further includes: a control signal line 60 , which passes through the thermal management module 10 and the plurality of battery packs 30 , respectively, and is connected to the box module 20 .

[0093] Specifically, this embodiment provides an implementation method of a control signal line 60, which connects the battery pack 30 and the thermal management module 10 to the box module 20 to achieve orderly control of the operation of each branch and each component, and subsequent transmission to the background for monitoring and management.

[0094] In some possible implementations of the present invention, the exterior of the thermal management module 10 , the box module 20 , and the plurality of battery packs 30 are wrapped with a thermal insulation adhesive layer 70 .

[0095] Specifically, this embodiment provides an implementation method of the thermal insulation glue layer 70. The provision of the thermal insulation glue layer 70 realizes the removal of the traditional container shell, so that the battery cluster 200 of the utility model eliminates the large box structure, and there is no problem of installation and assembly within the limited space of the shell of the traditional centralized energy storage system. Small modules are assembled, and the module size is moderate, which is more convenient for transfer, lifting and transportation.

[0096] Furthermore, the modules of the utility model are isolated from each other. When a battery experiences thermal runaway or catches fire, or the integrated circuit of the base heats up and catches fire, fire protection isolation of a single box and a single module can be achieved, and cabin-level partitioning, cabin-level pressure relief and explosion relief can be achieved without any impact on other modules.

[0097] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0098] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0100] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not deviate from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A battery box, characterized in that: include: A box shell (80), wherein a battery compartment for accommodating batteries is disposed inside the box shell (80), and the battery compartment is open on one side; A first flange (90) is arranged on a side of the peripheral wall of the box shell (80) close to the battery compartment opening and is turned toward the outside of the battery compartment; A second flange (100) is arranged on a side of the peripheral wall of the box shell (80) close to the bottom wall of the battery compartment and is turned toward the outside of the battery compartment; a boss (110), arranged on the first flange (90) and protruding from a plane where the first flange (90) is located along a first direction (N), wherein the first direction (N) is perpendicular to the bottom wall of the battery compartment; A groove (120) is provided on the second flange (100) corresponding to the boss (110); The first flange (90) and the second flange (100) are respectively provided with through holes (130), and the through holes (130) are used for the passage of the connecting screw (40) to achieve the connection between the two adjacent battery boxes.

2. The battery box according to claim 1, characterized in that: Also includes: A positioning pin (140) is disposed on the first flange (90) and protrudes from the plane where the first flange (90) is located along the first direction (N); A positioning hole (150) is provided on the second flange (100) corresponding to the positioning pin (140).

3. The battery case according to claim 1 or 2, characterized in that: Also includes: A mounting plate (160) is detachably arranged at an end of the box shell (80) along a second direction (M), wherein a plane where the second direction (M) is located is perpendicular to a plane where the first direction (N) is located; A mounting hole (170) is provided at an end of the box housing (80) on a side where the mounting plate (160) is mounted, and is used for mounting a connector; A cover plate (180) is detachably disposed at an end of the box shell (80) and is used to cover the mounting plate (160) and the connector; The side panels (190) are detachably connected to the two side peripheral walls of the box shell (80).

4. A battery pack, characterized in that: include: A connecting screw (40) and at least two battery boxes according to any one of claims 1 to 3; The connecting screw (40) is placed in the through hole (130) of the battery box to achieve the connection between two adjacent battery boxes.

5. The battery pack according to claim 4, characterized in that: Two adjacent battery boxes are positioned via positioning pins (140) and positioning holes (150).

6. A power battery, characterized in that: The invention comprises at least two battery packs as described in claim 4 or 5, wherein the battery packs are stacked.

7. An electrical equipment, characterized in that: include: The battery case according to any one of claims 1 to 3; Or, the battery pack according to claim 4 or 5; Or, the power battery as described in claim 6 above.

8. The electrical equipment according to claim 7, characterized in that: The electrical equipment is an energy storage system, and the energy storage system comprises at least one battery cluster (200); The battery cluster (200) comprises a stacked thermal management module, a box module (20) and at least one battery pack according to claim 4 or 5; The thermal management module is connected to the box module (20) and the battery pack (30) respectively through a cooling pipeline (11), and is used to provide cooling and / or heating for the box module (20) and the battery pack (30); An electrical component (21) is disposed in the box module (20), and the electrical component (21) is connected to at least the thermal management module and the battery pack (30); Any two of the battery clusters (200) are electrically connected, and the thermal management module of each battery cluster (200) operates independently.

9. The electrical equipment according to claim 8, characterized in that: The thermal management module (10), the box module (20) and the battery pack (30) are all provided with mounting positions that cooperate with the connecting screw (40), and the connecting screw (40) is used to achieve the connection between the thermal management module (10), the box module (20) and the battery pack (30).

10. The electrical equipment according to claim 8, characterized in that: The thermal management module comprises: a cooling housing (12) and a cooling power unit (13); The cooling power unit (13) is arranged in the cooling housing (12); The cooling pipeline (11) is connected to the cooling power unit (13), and the cooling pipeline (11) forms a loop between the box module (20) and the battery pack (30) for providing cold and / or heat to the box module (20) and the battery pack (30).

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