Battery system

Abstract

The utility model discloses a battery system. The battery system comprises an electrical cabin and a battery cabin, the electrical bin is provided with an electrical bin shell and a plurality of electrical devices arranged in the electrical bin shell, a first connector set is arranged on the electrical bin shell, the electrical devices are connected to the first connector set, and each electrical device comprises one or more of a high-voltage box, a water cooling unit and a PCS device. The battery bin and the electrical bin are arranged in a split mode, the battery bin comprises a battery bin shell and a plurality of battery modules, a second connector set is arranged on the battery bin shell, the battery bin shell is provided with a battery cavity, all the battery modules are arranged in the battery cavity, and all the battery modules are connected to the second connector set. The first connector set and the second connector set are connected through a connecting assembly, and the connecting assembly comprises an electric connecting piece and a water pipe. According to the battery system provided by the invention, the electrical cabin and the battery cabin are independently arranged, if the thermal runaway phenomenon of the battery module occurs, the electrical device is not influenced, and meanwhile, during maintenance, part replacement, battery module taking and placing and electrical device taking and placing are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the energy storage technology field, specifically, relate to a battery system. BACKGROUND

[0002] The battery system usually includes a warehouse shell, a plurality of battery packs and a plurality of electrical devices are arranged in the warehouse shell. Among them, the battery pack includes a battery pack shell and a battery module arranged in the battery pack shell, and the electrical device includes a high-voltage box, a water-cooled unit and a PCS device, etc. The battery system in the prior art sets a plurality of battery packs and a plurality of electrical devices in the same warehouse shell, which leads to a complex structure arranged in the warehouse shell, and the battery pack and the electrical device will interfere with each other during installation, maintenance and repair, making it inconvenient to replace parts, take and place the battery pack and the electrical device. Moreover, if the battery pack has a thermal runaway, the electrical device will also be affected, making the overall thermal runaway stability of the battery system poor.

[0003] Furthermore, the battery module in the existing battery system is first installed into the battery pack shell to form a battery pack, and the battery pack is then installed into the warehouse shell to form a battery system. The battery pack shell is added outside each battery module, which increases the material usage, complicates the installation steps, and reduces the space utilization.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0005] To solve one of the above technical defects, the utility model provides a battery system.

[0006] The application provides the following technical scheme:

[0007] A battery system comprises:

[0008] An electrical warehouse has an electrical warehouse shell and a plurality of electrical devices arranged in the electrical warehouse shell, a first connector group is arranged on the electrical warehouse shell, each electrical device is connected to the first connector group, and each electrical device comprises one or more of a high-voltage box, a water-cooled unit and a PCS device;

[0009] A battery warehouse is arranged separately from the electrical warehouse, the battery warehouse comprises a battery warehouse shell and a plurality of battery modules, a second connector group is arranged on the battery warehouse shell, the battery warehouse shell has a battery cavity, each battery module is arranged in the battery cavity, and each battery module is connected to the second connector group.

[0010] The first connector group and the second connector group are connected by a connecting assembly, and the connecting assembly comprises an electrical connector and a water pipe.

[0011] Optionally, the first joint group comprises a first communication interface, a first water pipe interface and a first high-voltage interface arranged on the electrical compartment shell;

[0012] The second joint group comprises a second communication interface, a second water pipe interface and a second high-voltage interface arranged on the battery compartment shell;

[0013] The electrical connection comprises a high-voltage wire harness and a communication wire harness, the high-voltage wire harness is connected with the first high-voltage interface and the second high-voltage interface respectively, the communication wire harness is connected with the first communication interface and the second communication interface respectively, and the water pipe is connected with the first water pipe interface and the second water pipe interface respectively.

[0014] Optionally, a plurality of first partitions are arranged in the electrical cavity of the electrical compartment shell, and each first partition divides the electrical cavity into a plurality of electrical sub-cavities.

[0015] Each electrical device can be pushed into or pulled out of the corresponding electrical sub-cavity.

[0016] Optionally, the electrical sub-cavities are arranged in sequence along the longitudinal direction.

[0017] Optionally, the electrical compartment shell comprises a first main shell, the first main shell comprises a first top wall, a first bottom wall and a first side wall located between and connected with the first top wall and the first bottom wall;

[0018] The first top wall, the first bottom wall and the first side wall enclose the electrical cavity;

[0019] The first joint group is arranged on the first top wall.

[0020] Optionally, the electrical compartment shell comprises a first cover plate;

[0021] The first main shell has a first side access opening communicating with the electrical cavity;

[0022] The first cover plate is detachably connected with the first main shell, and the first cover plate is used for closing or opening the first side access opening.

[0023] Optionally, a plurality of second partitions are arranged in the battery cavity, and each second partition divides the battery cavity into a plurality of battery sub-cavities.

[0024] Each battery module can be pushed into or pulled out of the corresponding battery sub-cavity.

[0025] Optionally, the battery compartment shell comprises a second main shell, the second main shell comprises a second top wall, a second bottom wall and a second side wall located between and connected with the second top wall and the second bottom wall;

[0026] The second top wall, the second bottom wall and the second side wall enclose the battery cavity.

[0027] The second joint group is arranged on the second top wall.

[0028] Optionally, the battery compartment shell comprises a second cover plate.

[0029] The second main shell encloses a second side part taking and placing opening which communicates with the battery cavity.

[0030] The second cover body is detachably connected to the second main shell, and the second cover body is used for closing or opening the second side part taking and placing opening.

[0031] Optionally, the second cover plate is provided with an integrated explosion-proof valve.

[0032] By adopting the above technical scheme, the application has the following beneficial effects:

[0033] The electrical compartment and the battery compartment of the battery system provided by the application are independently arranged, the arrangement of the electrical compartment and the battery compartment is more flexible, and the battery compartment and the electrical compartment can be arranged according to the space and layout on site. Moreover, the electrical compartment and the battery compartment are separately arranged, the battery module and the electrical device do not affect each other, if the battery module has a thermal runaway phenomenon, the electrical device will not be affected or will be affected very little, and the thermal runaway stability of the whole battery system is increased. Meanwhile, the battery module and the electrical device do not interfere with each other during installation, maintenance and repair, so that the replacement of parts, the taking and placing of the battery module and the taking and placing of the electrical device are more convenient.

[0034] Furthermore, the battery system of the application simplifies the whole battery compartment, converts the battery box installation into the direct installation of the battery module into the battery compartment shell, cancels the battery pack shell and other structures, can reduce the material consumption, reduce the installation steps, improve the space utilization rate, increase the overall energy density, and can greatly reduce the cost.

[0035] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings are part of the application and serve to provide a further understanding of the application, the schematic embodiments of the application and the description thereof serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0037] Fig. 1 The structure schematic diagram of the battery system provided by the embodiments of the application;

[0038] Fig. 2 A structure schematic diagram of a battery system provided by the embodiment of the present application after removing the first cover plate and the second cover plate;

[0039] Fig. 3 A structure schematic diagram of a battery compartment of a battery system provided by the embodiment of the present application after removing the second cover plate.

[0040] In the figure, the electrical compartment 1, the electrical compartment shell 11, the first top wall 111, the first bottom wall 112, the first side wall 113, the first cover plate 114, the first back plate 115, the electrical device 12, the high-voltage box 121, the water cooling unit 122, the PCS device 123, the first joint group 13, the first communication interface 131, the first water pipe interface 132, the first high-voltage interface 133, the battery compartment 2, the battery compartment shell 21, the second top wall 211, the second bottom wall 212, the second side wall 213, the second cover plate 214, the second back plate 215, the battery module 22, the second joint group 23, the second communication interface 231, the second water pipe interface 232, the second high-voltage interface 233, the second partition plate 24, the integrated explosion-proof valve 25.

[0041] It should be noted that the drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below in combination with the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0043] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] ReferenceFigs. 1 to 3 As shown, the battery system provided by the embodiment of the application comprises an electrical compartment 1 and a battery compartment 2. The electrical compartment 1 has an electrical compartment shell 11 and a plurality of electrical devices 12 arranged in the electrical compartment shell 11. A first connector group 13 is arranged on the electrical compartment shell 11. Each of the electrical devices 12 is connected to the first connector group 13. Each of the electrical devices 12 comprises one or more of a high-voltage box 121, a water-cooling unit 122 and a PCS device 123. The battery compartment 2 is arranged separately from the electrical compartment 1. The battery compartment 2 comprises a battery compartment shell 21 and a plurality of battery modules 22. A second connector group 23 is arranged on the battery compartment shell 21. The battery compartment shell 21 has a battery cavity. Each of the battery modules 22 is arranged in the battery cavity and connected to the second connector group 23. The first connector group 13 and the second connector group 23 are connected through a connecting assembly. The connecting assembly comprises an electrical connecting member and a water pipe.

[0046] The electrical compartment 1 and the battery compartment 2 of the battery system provided by the application are arranged independently. The arrangement of the electrical compartment 1 and the battery compartment 2 is more flexible. The electrical compartment 1 and the battery compartment 2 can be arranged according to the space and layout of the site. The electrical compartment 1 and the battery compartment 2 are arranged separately. The battery modules 22 and the electrical devices 12 do not affect each other. If the battery modules 22 have a thermal runaway phenomenon, the electrical devices 12 will not be affected or will be affected very little. The thermal runaway stability of the whole battery system is increased. During installation, maintenance and repair, the battery modules 22 and the electrical devices 12 do not interfere with each other. The replacement of parts, the taking and placing of the battery modules 22 and the taking and placing of the electrical devices 12 are more convenient.

[0047] Furthermore, the battery system of the application simplifies the whole battery compartment. The battery pack with a shell is changed to directly arrange the battery modules 22 in the battery compartment shell 21. The structure such as the shell of the battery pack is cancelled. The material usage is reduced. The installation steps are reduced. The space utilization is improved. The energy density of the whole is increased. The cost can be greatly reduced.

[0048] Preferably, the electrical compartment 1 and the battery compartment 2 can have a spacing. The spacing can be a far spacing or a close spacing according to the arrangement requirement.

[0049] Each of the electrical devices 12 is connected to the first connector group 13. The first connector group 13 is connected to the second connector group 23 through the electrical connecting member and the water pipe. Each of the battery modules and the water-cooling assembly is connected to the second connector group 23.

[0050] In some possible embodiments, the first joint group 13 includes a first communication interface 131, a first water pipe interface 132, and a first high-voltage interface 133 arranged on the electrical compartment shell 11. The second joint group 23 includes a second communication interface 231, a second water pipe interface 232, and a second high-voltage interface 233 arranged on the battery compartment shell 21. The above-mentioned electrical connections include a high-voltage wire harness and a communication wire harness. The high-voltage wire harness is connected to the first high-voltage interface 133 and the second high-voltage interface 233 respectively. The communication wire harness is connected to the first communication interface 131 and the second communication interface 231 respectively. The water pipe is connected to the first water pipe interface 132 and the second water pipe interface 232 respectively. The electrical devices 12 such as the high-voltage box 121, the water cooling unit 122, and the PCS device 123 can be connected to the first communication interface 131 respectively. The BMS board of the battery module 22 can be connected to the second communication interface 231. The high-voltage box 121 is connected to the first high-voltage interface 133. The power cable of the battery module 22 is connected to the second high-voltage interface 233. The water cooling pipe is arranged in the battery compartment 2. The water cooling unit 122 is in communication with the first water pipe interface 132. The water cooling pipe in the battery compartment 2 is in communication with the second water pipe interface 232. There is a large distance between the first communication interface 131 and the first high-voltage interface 133. There is a large distance between the second communication interface 231 and the second high-voltage interface 233, so that the communication interface and the high-voltage interface do not interfere with each other.

[0051] In some possible embodiments, a plurality of first partitions are arranged in the electrical cavity of the electrical compartment shell 11. Each first partition divides the electrical cavity into a plurality of electrical sub-cavities. Each electrical device 12 can be pushed into or pulled out of the corresponding electrical sub-cavity. The first partitions divide the electrical cavity into a plurality of sub-spaces. Each sub-space is an electrical cavity. The high-voltage box 121, the water cooling unit 122, and the PCS device 123 in the electrical devices 12 are arranged in different electrical sub-cavities respectively. In this way, the overall structure is more regular. The disassembly and maintenance of each electrical device 12 do not interfere with each other.

[0052] In some possible embodiments, the electrical sub-cavities are arranged in sequence along the longitudinal direction. Generally, one electrical compartment 1 is arranged with a plurality of battery compartments 2. The electrical compartment 1 is arranged in a form of small width and high height. The structure is more reasonable and the space can be better utilized. Correspondingly, the electrical devices 12 in the electrical compartment 1 can also be arranged in a form of small width and high height, which can better match the electrical compartment shell 11.

[0053] In some possible embodiments, the electrical compartment shell 11 comprises a first main shell, which comprises a first top wall 111, a first bottom wall 112, and a first side wall 113 located between and connected to the first top wall 111 and the first bottom wall 112. The first top wall 111, the first bottom wall 112, and the first side wall 113 enclose an electrical cavity, and the first connector group 13 is arranged on the first top wall 111. The first main shell comprises two second side walls 213 arranged on both sides of the first top wall 111 and the first bottom wall 112. The first top wall 111 is not overlaid with other electrical compartments 1, the first connector group 13 is arranged on the first top wall 111, which facilitates wiring and makes it more convenient to connect the connection assembly to the first connector group 13, and does not directly interfere with other devices and affect the spacing between the battery compartment 2 and the electrical compartment 1.

[0054] In some possible embodiments, the electrical compartment shell 11 comprises a first cover plate 114, and the first main shell has a first side access opening communicating with the electrical cavity. The first cover plate 114 is detachably connected to the first main shell and used to close or open the first side access opening. When the electrical device 12 needs to be maintained and repaired, the first cover plate 114 is removed, and then installed after maintenance and repair. The first cover plate 114 can be connected to the first top wall 111, the first bottom wall 112, and the first bottom wall 112 by screws. The first cover plate 114 is provided with a through hole, and the first top wall 111, the first bottom wall 112, and the first bottom wall 112 are provided with threaded holes corresponding to the through hole, and the threaded holes are threadedly connected by bolts.

[0055] In some possible embodiments, the electrical compartment shell 11 comprises a first back plate 115 arranged on the side of the electrical cavity away from the first cover plate 114. The first back plate 115 can be detachably connected to the first main shell, so that the first back plate 115 can be removed for maintenance if necessary.

[0056] In some possible embodiments, a plurality of second partitions 24 are arranged in the battery cavity, each second partition 24 divides the battery cavity into a plurality of battery sub-cavities, and each battery module 22 can be pushed into or pulled out of the corresponding battery sub-cavity. Each battery sub-cavity accommodates a plurality of battery modules 22, so that the overall arrangement is more regular, and the disassembly and maintenance of each battery module 22 do not interfere with each other. The battery module 22 can be pushed into or pulled out of the corresponding battery sub-cavity, which is convenient to operate and facilitates the maintenance and repair of the battery module 22.

[0057] In some possible embodiments, the battery compartment shell 21 comprises a second main shell, which comprises a second top wall 211, a second bottom wall 212, and a second side wall 213 located between and connected to the second top wall 211 and the second bottom wall 212. The second top wall 211, the second bottom wall 212, and the second side wall 213 enclose a battery cavity, and the second connector group 23 is arranged on the second top wall 211. The second top wall 211 is not overlaid by another battery compartment 2, and the arrangement of the second connector group 23 on the second top wall 211 facilitates wiring and makes it more convenient to connect the connection assembly to the second connector group 23, without directly interfering with other devices and affecting the spacing between the battery compartment 2 and the electrical compartment 1.

[0058] In some possible embodiments, the battery compartment shell 21 comprises a second cover plate 214, and the second main shell encloses a second side access opening that communicates with the battery cavity. The second cover plate 214 is detachably connected to the second main shell, and is used to close or open the second side access opening. When the battery module 22 needs to be maintained and repaired, the second cover plate 214 is removed, and then installed after maintenance and repair. The second cover plate 214 can be connected to the second top wall 211, the second bottom wall 212, and the second bottom wall 212 using screws, and the second cover plate 214 is provided with through holes, and the second top wall 211, the second bottom wall 212, and the second bottom wall 212 are provided with threaded holes corresponding to the through holes, and the bolts are threadedly connected through the through holes and the threaded holes.

[0059] In some possible embodiments, the battery compartment shell 21 comprises a second back plate 215 arranged on the side of the battery cavity away from the second cover plate 214. The second back plate 215 can be detachably connected to the second main shell, so that if it is more convenient to repair the side away from the access opening, the second back plate 215 can be detached for repair.

[0060] In some possible embodiments, the second cover plate 214 is provided with an integrated explosion-proof valve 25. The integrated explosion-proof valve 25 can communicate the battery cavity with the outside, and can prevent explosion caused by abnormal increase of internal pressure of the battery. The integrated explosion-proof valve 25 protects the battery compartment shell 21 from damage caused by excessive pressure by releasing pressure in time, thereby maintaining the structural integrity of the battery. The integrated explosion-proof valve 25 remains closed under normal working conditions, and when the internal pressure of the battery compartment 2 exceeds a preset safety value, the explosion-proof valve automatically opens to release the accumulated gas inside, thereby reducing the pressure and preventing the battery compartment 2 from rupturing or exploding. This mechanical principle effectively solves the problem of abnormal internal pressure of the battery, protects the safety of the battery in use, and also safeguards the personal safety of the user.

[0061] In some possible embodiments, the battery modules 22 are connected through copper bars. The battery pack is no longer used, a large number of intermediate series copper wires are cancelled, the copper bars with lower cost are used, and the production cost is greatly reduced.

[0062] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the above has disclosed the preferred embodiments of the present application, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application to make equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. A battery system characterized by, The utility model relates to an electric power battery module, comprising: an electric bin having an electric bin shell and a plurality of electric devices arranged in the electric bin shell, a first connector group being arranged on the electric bin shell, each of the electric devices being connected to the first connector group, each of the electric devices comprising one or more of a high-voltage box, a water-cooling unit and a PCS device; a battery bin being separate from the electric bin, the battery bin comprising a battery bin shell and a plurality of battery modules, a second connector group being arranged on the battery bin shell, the battery bin shell having a battery cavity, each of the battery modules being arranged in the battery cavity, each of the battery modules being connected to the second connector group; the first connector group and the second connector group being connected through a connecting assembly, the connecting assembly comprising an electric connecting member and a water pipe.

2. The battery system of claim 1, wherein, the first connector group comprising a first communication interface, a first water pipe interface and a first high-voltage interface arranged on the electric bin shell; the second connector group comprising a second communication interface, a second water pipe interface and a second high-voltage interface arranged on the battery bin shell; the electric connecting member comprising a high-voltage wire harness and a communication wire harness, the high-voltage wire harness being connected to the first high-voltage interface and the second high-voltage interface respectively, the communication wire harness being connected to the first communication interface and the second communication interface respectively, and the water pipe being connected to the first water pipe interface and the second water pipe interface respectively.

3. The battery system of claim 1, wherein, a plurality of first partitions being arranged in the electric cavity of the electric bin shell, each of the first partitions dividing the electric cavity into a plurality of electric sub-cavities; each of the electric devices being capable of being pushed into or pulled out of a corresponding electric sub-cavity.

4. The battery system of claim 3, wherein, the electric sub-cavities being arranged in sequence along a longitudinal direction.

5. The battery system of claim 1, wherein, the electric bin shell comprising a first main shell, the first main shell comprising a first top wall, a first bottom wall and a first side wall located between and connected to the first top wall and the first bottom wall; the first top wall, the first bottom wall and the first side wall enclosing the electric cavity; the first top wall being provided with the first connector group.

6. The battery system of claim 5, wherein, the electric bin shell comprising a first cover plate; the first main shell having a first side part access opening communicating with the electric cavity; the first cover plate being detachably connected to the first main shell, the first cover plate being used for closing or opening the first side part access opening.

7. The battery system of claim 1, wherein, a plurality of second partitions being arranged in the battery cavity, each of the second partitions dividing the battery cavity into a plurality of battery sub-cavities; each of the battery modules being capable of being pushed into or pulled out of a corresponding battery sub-cavity.

8. The battery system of claim 1, wherein, the battery bin shell comprising a second main shell, the second main shell comprising a second top wall, a second bottom wall and a second side wall located between and connected to the second top wall and the second bottom wall; the second top wall, the second bottom wall and the second side wall enclosing the battery cavity; the second top wall being provided with the second connector group.

9. The battery system of claim 8, wherein, the battery bin shell comprising a second cover plate; the second main shell enclosing a second side part access opening communicating with the battery cavity; the second cover plate being detachably connected to the second main shell, the second cover plate being used for closing or opening the second side part access opening.

10. The battery system of claim 9, wherein, the second cover plate being provided with an integrated explosion-proof valve.

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