Battery systems and electrical equipment

Abstract

The present invention provides a battery system and an electrical device, wherein the battery system includes a battery module and a control module connected together by a transmission module; the battery module includes a mounting seat, and a battery module detachably arranged on the mounting seat, the battery module includes a module housing, and a battery cell unit arranged in the module housing; the control module includes a battery replacement unit; the transmission module includes a wiring harness electrically connected between the battery replacement unit and the battery cell unit, and the wiring harness is detachably connected to the battery cell unit. The battery system described in the present invention can replace the battery by replacing the entire battery module or the battery module. Compared with the prior art method of only being able to charge the battery system using a charging pile, it is not only conducive to improving the efficiency of battery replacement and saving charging time, but also convenient for replacing and maintaining the battery module, thereby improving the use effect of the battery system.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a battery power system. The present invention also relates to an electrical device equipped with the battery system. Background Art

[0002] Battery systems are increasingly being used in electrical equipment such as electric vehicles. With the popularity and increase of electric vehicles, users have higher and higher requirements for the driving range of electric vehicles. As the energy storage and power output device of electric vehicles, the power battery system is the power source of electric vehicles and the guarantee of their driving range. The current battery system mainly uses charging to extend the driving range, but it has the disadvantage of long charging time.

[0003] In addition, the battery pack in the battery system usually adopts an integrated structure integrated on the vehicle body, and the multiple battery modules in the battery pack are bonded together in the battery pack shell. When the battery pack needs to be replaced and maintained, the entire battery pack needs to be replaced, which has the problem of high replacement costs. Therefore, how to optimize the structure of the battery system to improve the power supply efficiency of the battery system and facilitate maintenance and use is a technical problem that technicians in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention aims to propose a battery system to improve the battery replacement efficiency and facilitate the replacement and maintenance of battery modules.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A battery system includes a battery module and a control module connected together via a transmission module;

[0007] The battery module comprises a mounting seat, and a battery module detachably arranged on the mounting seat, wherein the battery module comprises a module shell and a battery cell unit arranged in the module shell;

[0008] The control module includes a battery replacement unit;

[0009] The transmission module includes a wiring harness electrically connected between the battery replacement unit and the battery cell unit, and the wiring harness is detachably connected to the battery cell unit.

[0010] Furthermore, a cold plate for cooling the battery cell unit is provided in the module housing, and the control module includes a cooling chamber connected to a cooling pipeline of an electrical device;

[0011] The battery system is mounted on the electrical equipment, and the transmission module includes a pipeline connecting the cold plate and the cooling chamber.

[0012] Furthermore, the mounting seat is provided with a mounting cavity with two ends opened, and the battery module is screwed into the mounting cavity.

[0013] Furthermore, a protective cover is provided at one end of the installation cavity, and the wiring harness and the pipeline are wrapped together by an insulating layer;

[0014] The wiring harness and the pipeline pass through the protective cover, and the insulating layer is inserted in the protective cover with interference fit.

[0015] Furthermore, the protective cover comprises a protective cover body and an elastic sealing body;

[0016] The protective cover body is threadedly connected to the mounting seat, the elastic sealing body is arranged at one end of the protective cover body away from the mounting seat, and the elastic sealing body is provided with a through hole communicating with the interior of the protective cover body.

[0017] Further, the battery cell unit includes a plurality of sector-shaped battery cells forming a circle; and / or,

[0018] The cold plate is in a ring shape and is arranged around the battery cell unit.

[0019] Furthermore, the control module includes a box body having a receiving cavity, and the cooling chamber and the battery replacement unit are arranged in the receiving cavity;

[0020] At least one of a fuse box, a BDU and a BMS fixed on the cooling chamber is arranged in the accommodating cavity.

[0021] Furthermore, the battery modules are disposed on two opposite sides of the control module, and through holes are disposed on two opposite sides of the box body, and the wiring harness passes through the through holes.

[0022] Further, an explosion-proof valve is provided at one end of the module housing, the battery cell unit includes an electrical connector provided at the other end of the module housing, and the wiring harness is detachably connected to the electrical connector; and / or,

[0023] An elastic pad is provided at one end of the module shell, and the elastic pad is sandwiched between the module shell and the battery cell unit.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] In the battery system described in the present invention, the electric energy of each battery cell unit can be transmitted to the battery replacement unit through the transmission module, so as to facilitate power supply to the outside, so that the battery module can be detachably mounted on the mounting base, and the wiring harness in the transmission module is detachably connected to the battery cell unit, and the battery can be replaced by replacing the entire battery module, or replacing the battery module. Compared with the method in the prior art that only a charging pile can be used to charge the battery system, it is not only beneficial to improve the battery replacement efficiency and save charging time, but also convenient for replacement and maintenance of the battery module, thereby improving the use effect of the battery system.

[0026] In addition, by arranging a cold plate in the module housing for cooling the battery cell unit, it is beneficial to improve the cooling effect of the single battery cell, and by arranging a cooling chamber in the control module, it is beneficial to cool the control module and improve the use effect of the control module. The cold plate and the cooling chamber are connected by a pipeline, which is beneficial to transport the cooling medium of the electrical equipment to the cold plate through the cooling chamber, and improve the flow and cooling effect of the cooling medium between the cold plate and the cooling chamber. The mounting cavity with open ends on the mounting seat and the battery module screwed in the mounting cavity facilitate the installation and removal of the battery module and have good operational convenience.

[0027] In addition, the wiring harness and pipeline are wrapped together by an insulating layer, which is conducive to improving the installation efficiency and safety of the wiring harness and pipeline during use, and the wiring harness and pipeline pass through the protective cover arranged at one end of the installation cavity, and the insulating layer is inserted in the protective cover with interference fit, which is conducive to improving the sealing effect of the wiring harness and pipeline with the installation cavity in the connected state. The protective cover body is screwed to the mounting seat, which is conducive to improving the connection strength between the protective cover and the mounting seat, and the through hole is arranged on the elastic sealing body, which is conducive to the passage of the wiring harness and pipeline, and has a good sealing effect. The battery cell unit includes a plurality of fan-shaped battery cells that form a circle, which is conducive to improving the space utilization and the energy density of the battery module; the cold plate is in a ring shape arranged around the battery cell unit, which is not only conducive to improving the heat dissipation effect of the battery cell unit, but also conducive to the installation of multiple battery cell units in the module shell.

[0028] Secondly, the cooling bin and the battery exchange unit in the control module are arranged in the accommodating cavity of the shell, which is convenient for the arrangement of the cooling bin and the battery exchange unit and can protect the cooling bin and the battery exchange unit. At least one of the fuse box, BDU and BMS fixed on the cooling bin is arranged in the accommodating cavity. This solution of arranging the electrical components separately from the battery modules is not only conducive to the quick replacement of the battery modules, but also facilitates the convenience of maintenance and replacement of the electrical components and the integrated arrangement of the electrical components by selectively placing the electrical components in the accommodating cavity as needed.

[0029] Furthermore, by arranging battery modules on both opposite sides of the control module, the power of the battery system is improved, thereby extending the battery life. The explosion-proof valve is arranged at the end opposite to the electrical connector, which helps to reduce the impact of thermal runaway on the electrical connector and the transmission module, thereby improving the safety of the battery module. The elastic pad is sandwiched between the module shell and the battery cell unit, which helps to prevent the battery cell unit from colliding with the module shell, thereby improving the safety of the battery module.

[0030] In addition, another object of the present invention is to provide an electrical device, on which the battery system as described above is provided.

[0031] The electrical equipment described in the present invention is beneficial to improving the efficiency of battery replacement, saving battery replacement time, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 A schematic diagram of the structure of a battery system according to an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the structure of a battery system according to an embodiment of the present invention from one viewing angle;

[0035] Figure 3 A schematic structural diagram of a battery system according to an embodiment of the present invention from another perspective;

[0036] Figure 4 A disassembly diagram of a battery system according to an embodiment of the present invention;

[0037] Figure 5 A schematic diagram of a portion of the structure of a transmission module according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of the protective cover according to an embodiment of the present invention;

[0039] Figure 7 A disassembled diagram of a battery module according to an embodiment of the present invention;

[0040] Figure 8 A schematic diagram of the structure of a battery module according to an embodiment of the present invention;

[0041] Fig. 9 It is a schematic structural diagram of some battery cell units according to an embodiment of the present invention;

[0042] Fig.10 This is a disassembled diagram of a control module according to an embodiment of the present invention;

[0043] Fig.11 This is a schematic diagram of the structure of a control module according to an embodiment of the present invention;

[0044] Fig.12 It is a schematic structural diagram of the elastic protective cap according to an embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 1. Mounting seat; 2. Battery module; 3. Box body; 4. Cooling chamber; 5. BDU; 6. BMS; 7. Fuse box; 8. Battery replacement unit; 9. Transmission line; 10. Protective cover;

[0047] 100, control module; 200, battery module; 300, transmission module;

[0048] 101, mounting hole; 102, mounting cavity;

[0049] 201, module housing; 2011, second external thread; 202, explosion-proof valve; 203, elastic pad; 204, battery cell; 205, cold plate; 206, sealing pad; 207, cover plate; 208, electrical connector; 209, first liquid inlet; 210, first liquid outlet;

[0050] 301, upper shell; 302, lower shell; 303, through hole; 304, elastic protective cap; 3041, annular groove; 305, high-pressure output port; 306, second liquid inlet; 307, second liquid outlet;

[0051] 401, second liquid inlet pipe; 402, second liquid outlet pipe; 403, output pipe; 404, input pipe;

[0052] 1001. Protective cover body; 1002. Elastic sealing body; 1003. First external thread. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0054] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connected", and "connector" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0057] This embodiment relates to a battery system. In terms of overall structure, the battery system includes a battery module 200 and a control module 100 connected together via a transmission module 300 .

[0058] The battery module 200 includes a mounting base 1, and a battery module 2 detachably mounted on the mounting base 1, wherein the battery module 2 includes a module housing 201 and a battery cell unit disposed in the module housing 201. The control module 100 includes a battery replacement unit 8. The transmission module 300 includes a wiring harness electrically connected between the battery replacement unit 8 and the battery cell unit, and the wiring harness is detachably connected to the battery cell unit.

[0059] In the battery system of this embodiment, the electric energy of each battery cell unit can be transmitted to the battery exchange unit 8 through the transmission module 300, so as to facilitate power supply to the outside, so that the battery module 2 can be detachably mounted on the mounting base 1, and the wiring harness in the transmission module 300 is detachably connected to the battery cell unit. The battery can be exchanged by replacing the entire battery module 200, or by replacing the battery module 2. Compared with the prior art method of only being able to charge the battery system with a charging pile, it is not only beneficial to improve the battery exchange efficiency and save charging time, but also convenient for replacing and maintaining the battery module 2, thereby improving the use effect of the battery system.

[0060] Based on the above overall introduction, an exemplary structure of the battery system described in this embodiment is as follows: Figure 1 and Figure 2 As shown in . The mounting base 1 is used as a mounting carrier of the battery module 2, and is specifically mounted on the vehicle body, such as the periphery of the chassis, the bottom of the trunk, the front cabin, etc., so as to facilitate the replacement of the battery module 200 and the battery module 2 to achieve the charging effect. Of course, when it is arranged, the position of the mounting base 1 can also be adjusted according to the requirements of the convenience of operation and the layout space.

[0061] In order to facilitate the replacement of the battery module 200 as a whole, the mounting base 1 of this embodiment can be detachably mounted thereon. Figure 3 and Figure 4As shown in , a plurality of mounting holes 101 are respectively provided at both ends of the mounting seat 1, and the mounting seat 1 is mounted on the vehicle body by bolts passing through the mounting holes 101 and screwing therebetween. Here, the mounting structure of the mounting seat 1 is simple, easy to install and remove, and has a good connection effect. Of course, the mounting seat 1 can also be detachably mounted on the mounting carrier by other connection methods, which are not specifically limited here.

[0062] In order to ensure that the control module 100 and the battery module 2 are in a better working state, a cold plate 205 for cooling the battery cell unit is provided in the module shell 201 in this embodiment. The control module 100 includes a cooling bin 4 connected to the cooling pipeline of the electrical equipment. The battery system of this embodiment is mounted on the electrical equipment. The transmission module 300 includes a pipeline connecting the cold plate 205 and the cooling bin 4.

[0063] Here, by arranging a cold plate 205 in the module housing 201 to cool the battery cell unit, the battery cell unit is in a better working state and the working efficiency of the battery cell unit is improved; and by arranging a cooling chamber 4 in the control module 100, the control module 100 is cooled and the use effect of the control module 100 is improved. The cold plate 205 and the cooling chamber 4 are connected by a pipeline, and the cooling medium of the electric equipment is transported to the cold plate 205 through the cooling chamber 4, which is conducive to improving the flow effect of the cooling medium between the cold plate 205 and the cooling chamber 4, and is conducive to improving the use efficiency of the cooling medium.

[0064] The wiring harness in this embodiment specifically includes two high-voltage wiring harnesses for transmitting electric energy and a low-voltage wiring harness for transmitting cell unit voltage and temperature information. The pipeline includes a first liquid inlet pipeline for transmitting the cooling medium in the cooling chamber 4 to the cold plate 205, and a first liquid outlet pipeline for outputting the cooling medium in the cold plate 205 to the cooling chamber 4.

[0065] As a preferred embodiment, Figure 1 , Figure 5 and Figure 6 As shown in FIG. 1 , a protective cover 10 is provided at one end of the installation cavity 102, and the above-mentioned wiring harness and pipeline are wrapped together by an insulating layer. For the convenience of description, the wiring harness and pipeline wrapped together by the insulating layer are called transmission line 9, that is, the transmission line 9 is detachably connected to the battery module 2. The number of transmission lines 9 in a transmission module 300 corresponds to the number of battery modules 2. The wiring harness and pipeline pass through the protective cover 10, and the insulating layer is inserted in the protective cover 10 with interference fit.

[0066] In this embodiment, the wiring harness and the pipeline are wrapped together by an insulating layer, which is beneficial to improving the installation efficiency and use safety of the wiring harness and the pipeline. The wiring harness and the pipeline pass through the protective cover 10 provided at one end of the installation cavity 102, and the insulating layer is inserted in the protective cover 10 with interference fit, which is beneficial to improving the sealing effect of the transmission line 9 and the installation cavity 102 in the connected state.

[0067] Combination Figure 5 and Figure 6 As shown in , the protective cover 10 in this embodiment includes a protective cover body 1001 and an elastic sealing body 1002. The protective cover body 1001 is threadedly connected to the mounting seat 1, and the elastic sealing body 1002 is arranged at one end of the protective cover body 1001 away from the mounting seat 1, and the elastic sealing body 1002 is provided with a through hole communicating with the inside of the protective cover body 1001.

[0068] The outer periphery of the protective cover body 1001 is provided with a first external thread 1003, and the end of the mounting cavity 102 is provided with a first internal thread. When the transmission line 9 is connected to the corresponding structure on the battery module 2, the protective cover 10 can slide relative to the transmission line 9 and be connected to the mounting seat 1 by screwing the first internal thread and the first external thread 1003, thereby realizing a detachable connection with the battery module 2.

[0069] Preferably, the elastic sealing body 1002 is in the shape of a truncated cone, and the diameter of the elastic sealing body 1002 is gradually reduced in the direction away from the protective cover body 1001. The large end surface of the elastic sealing body 1002 can abut against the mounting seat 1, limit the installed protective cover body 1001, and achieve a good sealing effect. Of course, the elastic sealing body 1002 in this embodiment can also be in the shape of a disc, which can also achieve a good limiting and sealing effect.

[0070] The structure of the battery module 200 in this embodiment is as follows Figure 4 As shown in , the mounting base 1 is provided with a mounting cavity 102 with both ends opened, and the battery module 2 is screwed into the mounting cavity 102. In this embodiment, the mounting cavities 102 are arranged in a plurality at intervals along the length direction of the mounting base 1, and the battery modules 2 and the transmission lines 9 are both arranged in a plurality corresponding to the mounting cavities 102, which is conducive to further increasing the power of the battery module 200 and improving the battery life.

[0071] In this way, when the battery system needs to be charged, it can be charged by replacing the battery module 2 separately, which is beneficial to improve the charging efficiency. At the same time, by installing each battery module 2 on the mounting base 1 separately and detachably, each battery module 2 is arranged in a mounting cavity 102 independent of each other on the mounting base 1, and multiple battery modules 2 are integrated and cooperated to operate the battery system. At the same time, it is also beneficial to prevent the impact on other battery modules 2 when one battery module 2 is damaged, thereby improving the safety of the battery system.

[0072] In terms of detailed structure, a second external thread 2011 is provided on the outer periphery of the end of the battery module 2, a second internal thread is provided in the installation cavity 102, the module housing 201 is inserted into the corresponding installation cavity 102, and is installed in the installation cavity 102 by screwing the second external thread 2011 and the second internal thread. The installation method of the battery module 2 here is simple and easy to operate, thereby facilitating the efficiency of battery replacement. Among them, the first external thread 1003 and the second external thread 2011 have opposite rotation directions to improve the convenience of installation operation.

[0073] As a preferred embodiment, Figures 7 to 9 As shown, the battery cell unit includes a plurality of sector-shaped battery cells 204 that form a circle. The sector-shaped battery cells 204 here have substantially the same structure as the traditional square battery cells 204, and the only difference is the shape of the battery cells 204. In this embodiment, the number of battery cells 204 is three as shown in the figure, and the angle between the two right-angled surfaces of each battery cell 204 is 120°. Of course, in specific implementation, the number of battery cells 204 can also be increased or decreased according to usage requirements.

[0074] In this embodiment, the battery cell unit includes a plurality of fan-shaped battery cells 204 that form a circle, which is beneficial to improving the space utilization and the energy density of the battery module 2. Here, a plurality of fan-shaped battery cells 204 are used, and a single fan-shaped battery cell 204 is easy to manufacture and process, and a plurality of fan-shaped battery cells 204 are easy to piece together and assemble in the accommodating cavity of the module shell 201, while ensuring the energy density of the battery module 2, ensuring the process feasibility and manufacturing feasibility, and a single fan-shaped battery cell 204 is easy to replace and repair if there is a problem or damage.

[0075] Preferably, the cold plate 205 is in a ring shape around the battery cell unit, and the module housing 201 is also in a ring shape. In this embodiment, one end of the module housing 201 is open, and after the multiple battery cells 204 are loaded into the cold plate 205, they are loaded into the module housing 201 through the open end together with the cold plate 205. The open end of the module housing 201 is screwed to the installation cavity 102.

[0076] like Figure 7As shown in FIG, the opening of the module housing 201 is blocked by a cover plate 207 disposed on the module housing 201. A sealing gasket 206 is disposed between the cover plate 207 and the module housing 201 to improve the sealing of the battery module 2. An explosion-proof valve 202 is disposed at one end of the module housing 201, and the battery cell unit includes an electrical connector 208 disposed at the other end of the module housing 201, and the wiring harness is detachably connected to the electrical connector 208.

[0077] The explosion-proof valve 202 in this embodiment is arranged at one end of the module housing 201, and can rupture when thermal runaway occurs in the battery module 2, thereby releasing high-pressure gas. The explosion-proof valve 202 is arranged at the end opposite to the electrical connector 208, which is conducive to reducing the impact of thermal runaway on the electrical connector 208 and the transmission module 300, thereby improving the safety of the battery module 200.

[0078] In addition, an elastic pad 203 is provided at one end of the module housing 201, and the elastic pad 203 is sandwiched between the module housing 201 and the battery cell unit. Here, the elastic pad 203 is specifically provided at one end of the module housing 201 that is opposite to the opening, and preferably, the edge of the elastic pad 203 is also located between the module housing 201 and the cold plate 205. This helps prevent the battery cell unit, the cold plate 205 and the module housing 201 from colliding, thereby improving the safety of the battery module 2.

[0079] Specifically, the positive and negative electrode blocks on each battery cell 204 are arranged at one end of the battery cell 204 facing the cover plate 207, and a bus connecting each battery cell 204 and a collection component for collecting information of each battery cell 204 are provided at the ends of the multiple battery cells 204. The electrical connector 208 includes a high-voltage interface provided on the cover plate 207 and electrically connected to the bus, and a low-voltage interface electrically connected to the collection component. Among them, the high-voltage interface is used to connect to the two high-voltage wiring harnesses mentioned above, so as to transmit the electric energy of the battery module 2 to the battery replacement unit 8. The low-voltage interface is connected to the low-voltage wiring harness mentioned above, and is used to collect the temperature information and voltage information of each battery cell 204, and transmit it to the BMS6.

[0080] A first liquid inlet 209 and a first liquid outlet 210 extending out of the cover plate 207 are provided at one end of the cold plate 205 facing the cover plate 207. The cooling medium flows into the cold plate 205 through the first liquid inlet 209, flows through the periphery of each battery cell 204 to take away the heat of each battery cell 204, and then is discharged through the first liquid outlet 210. The first liquid inlet 209 is connected to the first liquid inlet pipeline, and the first liquid outlet 210 is specifically connected to the first liquid outlet pipeline.

[0081] When the transmission line 9 in this embodiment is connected to the battery module 2, the high-voltage wire harness is connected to the high-voltage interface plug-in, the low-voltage wire harness is connected to the low-voltage interface plug-in, and the first liquid inlet 209 and the first liquid inlet pipeline, as well as the first liquid outlet 210 and the first liquid outlet pipeline are all connected by clamping. The clamping structure here can refer to the existing technology, and has good sealing in the clamping state, and will not cause water leakage and other problems. After the wiring harness, pipeline and battery unit are connected, the transmission line 9 is fixed on the mounting seat 1 through the protective cover 10.

[0082] like Fig.10 and Fig.11 As shown in , as a preferred embodiment, the control module 100 includes a box body 3 having a accommodating cavity, and the cooling bin 4 and the battery exchange unit 8 are arranged in the accommodating cavity. The cooling bin 4 here is preferably connected to the cooling system on the electrical equipment to improve the utilization rate of the cooling medium and help reduce production costs. Providing the cooling bin 4 and the battery exchange unit 8 in the accommodating cavity is conducive to the layout and implementation of the two, and the cooling bin 4 and the battery exchange unit 8 can be protected by the box body 3, which has better safety of use.

[0083] Specifically, the box body 3 includes a lower shell 302 and an upper shell 301 that are buckled together. A second liquid inlet pipe 401 and a second liquid outlet pipe 402 are provided on the cooling chamber 4. Corresponding to the second liquid inlet pipe 401 and the second liquid outlet pipe 402, a second liquid inlet port 306 communicating with the second liquid inlet pipe 401 and a second liquid outlet port 307 communicating with the second liquid outlet pipe 402 are provided on the lower shell 302. The cooling medium in the cooling system of the electric equipment equipped with the battery system flows into the cooling chamber 4 through the second liquid inlet port 306, and flows out of the cooling chamber 4 through the second liquid outlet port 307. In addition, an output pipe 403 communicating with the first liquid inlet pipe and an input pipe 404 communicating with the first liquid outlet pipe are also provided on the cooling chamber 4 to realize the communication between the cold plate 205 and the cooling chamber 4.

[0084] Preferably, a fuse box 7, a BDU 5 and a BMS 6 fixed on the cooling chamber 4 are provided in the accommodating cavity. This solution of arranging the electrical components separately from the battery module 2 is not only conducive to the quick replacement of the battery module 2, but also facilitates the convenience of repairing and replacing the electrical components and the integrated setting of the electrical components by selectively placing the electrical components in the accommodating cavity as needed.

[0085] Among them, the high-voltage wiring harness and the battery exchange unit 8 are both electrically connected to the BDU5. The battery exchange unit 8 plays the role of aggregating electric energy and aggregates the positive and negative poles of each battery module 2. BDU5 plays the role of controlling the on and off of the high-voltage wiring harness. In addition, a high-voltage output port 305 electrically connected to the battery exchange unit 8 is provided on the lower shell 302. When the battery system supplies power to the electrical equipment, each battery module 2 can transmit electric energy to the battery exchange unit 8 through the high-voltage wiring harness. The battery exchange unit 8 aggregates the transmitted electric energy and outputs high voltage electricity to the outside after the aggregated electric energy passes through the BDU5 and the high-voltage output port 305, thereby realizing power supply to the outside and meeting the use requirements of electrical components on the electrical equipment. It should be noted that the solution of only one of the fuse box 7, BDU5 and BMS6 being arranged on the cooling bin 4 is also feasible.

[0086] Preferably, the control module 100 is provided with battery modules 200 on both opposite sides, and the box body 3 is provided with through holes 303 on both opposite sides, through which the wiring harness passes. Fig.10 and Fig.11 As shown in the figure, the through hole 303 is specifically located on the lower shell 302. In order to improve the installation effect of the wire harness on the box body 3, the elastic protective cap 304 in the through hole 303 is provided with a through channel, and the insulating layer wrapped outside the wire harness and the pipeline is inserted into the channel with interference fit. In order to facilitate the arrangement and installation of multiple transmission lines 9, an insulating layer is wrapped outside the multiple transmission lines 9, and the insulating layer outside the multiple transmission lines 9 is inserted into the channel with interference fit, thereby facilitating the arrangement and connection of multiple transmission lines 9 on the box body 3.

[0087] like Fig.12 As shown in the figure, the middle part of the elastic protective cap 304 is provided with an annular groove 3041 arranged along its own circumference, and the elastic protective cap 304 is clamped on the edge of the through hole 303 through the annular groove 3041. Both ends of the elastic protective cap 304 are provided with a guide part, and the guide part is a cone with a gradually decreasing cross-section along the direction pointing to the end of the elastic protective cap 304. Under the guidance of the guide part, the elastic protective cap 304 can make the annular groove 3041 clamped on the edge of the through hole 303, thereby improving the installation convenience of the elastic protective cap 304. Of course, the solution of providing a guide part at one end of the elastic protective cap 304 is also feasible.

[0088] When the battery system in this embodiment is replaced, the screw connection between the protective cover 10 and the mounting cavity 102 is first released, and the protective cover 10 and the transmission line 9 are removed from the mounting seat 1, so that the wiring harness in the transmission line 9 is disconnected from the electrical connector 208, and the first liquid inlet pipe and the first liquid outlet pipe are respectively disconnected from the first liquid inlet port 209 and the first liquid outlet port 210. Then, the battery module 2 is rotated in the opposite direction to release the screw connection between the battery module 2 and the mounting cavity 102, and then the battery module 2 is removed.

[0089] Then insert the fully charged battery module 2 into the installation cavity 102, and rotate the battery module 2 so that the battery module 2 is screwed to the installation cavity 102. After the battery module 2 is installed in place, the two high-voltage harnesses in the transmission line 9 are plug-connected to the high-voltage interface, the low-voltage harness is plug-connected to the low-voltage interface, the first liquid inlet 209 is connected to the first liquid inlet pipe by clamping, and the first liquid outlet 210 is connected to the first liquid outlet pipe by clamping. Then, the protective cover body 1001 is screwed to the installation cavity 102 to fix the transmission line 9 on the mounting seat 1, thereby completing the battery replacement of the battery module 2.

[0090] The battery system in this embodiment can quickly provide electric energy by replacing the battery module 200 or the battery module 2, which greatly shortens the energy replenishment time, is conducive to improving the efficiency of charging the battery system, and has good safety in use. In addition, the form of the battery system in this embodiment can be changed at will according to the needs of the whole vehicle, so that the battery system can be arranged according to a suitable structure under the premise of ensuring that it can provide energy for the whole vehicle, and the battery module 200 can be easily replaced.

[0091] In addition, this embodiment also relates to an electrical device, on which the battery system as described above is provided.

[0092] The electric device of this embodiment, by setting the above battery system, is conducive to improving the convenience of battery replacement, extending the endurance of the electric device, and has good practicality. In specific implementation, the electric device can be a product with electricity demand, such as a vehicle.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery system, characterized in that: including a battery module and a control module connected together via a transmission module; The battery module comprises a mounting seat, and a battery module detachably arranged on the mounting seat, wherein the battery module comprises a module shell and a battery cell unit arranged in the module shell; The control module includes a battery replacement unit; The transmission module includes a wiring harness electrically connected between the battery replacement unit and the battery cell unit, and the wiring harness is detachably connected to the battery cell unit; A cold plate for cooling the battery cell unit is provided in the module housing, and the control module includes a cooling chamber connected to a cooling pipeline of an electrical device; The battery system is mounted on the electrical equipment, and the transmission module includes a pipeline connecting the cold plate and the cooling chamber; The wiring harness and the pipeline are wrapped together by an insulating layer, and the wiring harness and the pipeline wrapped together by the insulating layer are transmission lines, and the transmission lines are detachably connected to the battery module.

2. The battery system according to claim 1, characterized in that: The mounting seat is provided with a mounting cavity with two ends opened, and the battery module is screwed in the mounting cavity.

3. The battery system according to claim 2, characterized in that: A protective sleeve is provided at one end of the installation cavity; The wiring harness and the pipeline pass through the protective cover, and the insulating layer is inserted in the protective cover with interference fit.

4. The battery system according to claim 3, characterized in that: The protective cover comprises a protective cover body and an elastic sealing body; The protective cover body is threadedly connected to the mounting seat, the elastic sealing body is arranged at one end of the protective cover body away from the mounting seat, and the elastic sealing body is provided with a through hole communicating with the interior of the protective cover body.

5. The battery system according to claim 1, characterized in that: The battery cell unit includes a plurality of sector-shaped battery cells forming a circle; and / or, The cold plate is in a ring shape and is arranged around the battery cell unit.

6. The battery system according to claim 1, characterized in that: The control module comprises a box body having a receiving cavity, and the cooling chamber and the battery replacement unit are arranged in the receiving cavity; At least one of a fuse box, a BDU and a BMS fixed on the cooling chamber is arranged in the accommodating cavity.

7. The battery system according to claim 6, characterized in that: The battery modules are disposed on two opposite sides of the control module, and through holes are disposed on two opposite sides of the box body, through which the wiring harness passes.

8. The battery system according to any one of claims 1 to 7, characterized in that: An explosion-proof valve is provided at one end of the module housing, the battery cell unit includes an electrical connector provided at the other end of the module housing, and the wiring harness is detachably connected to the electrical connector; and / or, An elastic pad is provided at one end of the module shell, and the elastic pad is sandwiched between the module shell and the battery cell unit.

9. An electrical equipment, characterized in that: The electrical equipment is provided with a battery system as claimed in any one of claims 1 to 8.

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