Battery modules, battery modules and battery systems

Abstract

The present invention provides a battery module, a battery module and a battery system, wherein the battery module comprises a module shell having a receiving cavity, and a battery cell unit arranged in the receiving cavity; a cold plate arranged around the battery cell unit is arranged in the receiving cavity, and a connecting pipe extending out of the module shell is arranged on the cold plate, and the connecting pipe is used to connect the cold plate with an external cooling pipeline. The battery module described in the present invention is provided with a cold plate arranged around the battery cell unit in the receiving cavity of the module shell, and a connecting pipe extending out of the module shell is arranged on the cold plate, and the external cooling pipeline inputs the cooling medium into the cold plate via the connecting pipe to cool the battery cell unit, and has good cooling efficiency, thereby facilitating the improvement of the performance and safety of the battery module.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a battery module. The present invention also relates to a battery module and a battery system provided in the battery module. Background Art

[0002] With the popularization and increase of electric devices, such as 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 maintains its driving range by charging, but it has the disadvantage of long charging time.

[0003] In addition, the battery pack in the battery system adopts an integrated structure, and the overall life of the battery pack is not long, but when the battery pack needs to be replaced, there is a problem of high replacement cost. Therefore, how to optimize the structure of the battery system to facilitate the power supply, maintenance and use of the battery system is a technical problem that technicians in this field need to solve urgently.

[0004] In addition, the performance of the battery module, as an important component of the battery pack, directly affects the performance of the battery pack. The current battery module has a poor cooling effect, which leads to poor working performance of the battery module, thus affecting the use effect of the battery pack. Summary of the invention

[0005] In view of this, the present invention aims to provide a battery module with better performance.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A battery module comprises a module housing having a receiving cavity, and a battery cell unit arranged in the receiving cavity;

[0008] A cold plate arranged around the battery cell unit is disposed in the accommodating cavity, and a connecting pipe extending out of the module shell is disposed on the cold plate, and the connecting pipe is used to connect the cold plate with an external cooling pipeline.

[0009] Furthermore, a first mounting portion is disposed outside the module housing, and the first mounting portion is used to detachably mount the module housing on an external carrier.

[0010] Furthermore, the first mounting portion includes an external thread provided on the module housing.

[0011] Furthermore, the battery cell unit includes a plurality of sector-shaped battery cells forming a circle.

[0012] Furthermore, an explosion-proof valve is provided at one end of the module shell, and the battery cell unit includes an electrical connector provided at the other end of the module shell.

[0013] Furthermore, an elastic pad is provided at one end of the accommodating cavity, and the elastic pad is sandwiched between the module shell and the battery cell unit.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The battery module described in the present invention is provided with a cold plate arranged around the battery cell unit in the accommodating cavity of the module shell, and the cold plate is provided with a connecting pipe extending out of the module shell. The external cooling pipeline inputs the cooling medium into the cold plate through the connecting pipe to cool the battery cell unit, and has good cooling efficiency, thereby helping to improve the performance and safety of the battery module.

[0016] In addition, the module housing is detachably mounted on an external carrier through a first mounting portion, which facilitates replacement of the battery module, thereby improving the convenience of battery replacement and replacement maintenance. The first mounting portion includes an external thread, which is not only convenient for layout and implementation, but also convenient for installation and disassembly. The battery cell unit includes a plurality of fan-shaped battery cells that form a circle. On the one hand, it is beneficial to improve the space utilization of the accommodating cavity and improve the energy density of the battery module. On the other hand, the battery cell can also be in a better working state through the cooling effect of the cold plate.

[0017] In addition, the explosion-proof valve and the electrical connector are arranged on the module housing opposite to each other, which is conducive to preventing the explosion-proof valve from damaging the electrical connector when it ruptures and releases high-temperature gas, thereby reducing the impact range of thermal runaway. The elastic pad is sandwiched between the module housing and the battery cell unit, which is conducive to preventing the battery cell unit from colliding with the module housing, thereby improving the safety of the battery module.

[0018] In addition, another object of the present invention is to provide a battery module, comprising a mounting seat having a mounting cavity, and the battery module as described above, wherein the battery module is disposed in the mounting cavity.

[0019] Furthermore, the mounting base is provided with a second mounting portion, and the second mounting portion is used to detachably mount the mounting base on the electrical equipment.

[0020] The battery module of the present invention provides a mounting seat with a mounting cavity, and arranges the battery module in the mounting cavity, so that the mounting seat serves as an external carrier, has the advantages of simple structure and easy layout and implementation.

[0021] In addition, the mounting base can be detachably mounted on the vehicle electrical equipment through the second mounting portion, which facilitates the disassembly of the mounting base to replace the battery module, thereby facilitating the improvement of the efficiency of battery replacement.

[0022] In addition, another object of the present invention is to provide a battery system, comprising the battery module as described above.

[0023] Furthermore, it also includes a control module, and a transmission module that detachably connects the control module and the battery module;

[0024] The control module includes a cooling chamber connected to a cooling pipeline of the electric device, and a power exchange unit for supplying power to the electric device;

[0025] The transmission module includes a pipeline connecting the cooling chamber and the cold plate, and a wiring harness connected between the battery cell unit and the battery replacement unit.

[0026] The battery system of the present invention is beneficial to improving the power performance of the battery system by providing the battery module as described above.

[0027] In addition, the electric energy of each battery cell unit can be transmitted to the battery exchange unit through the transmission module, so as to facilitate the power supply to the electrical equipment, so that the battery module can be detachably installed 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 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 facilitates the replacement and maintenance of the battery module, thereby improving the use effect of the battery system on the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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:

[0029] Figure 1 This is a disassembled diagram of the battery module according to the first embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the battery module according to the first embodiment of the present invention;

[0031] Figure 3 This is a schematic structural diagram of some battery cell units according to the first embodiment of the present invention;

[0032] Figure 4 This is a disassembled diagram of the battery module according to the second embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the structure of a battery module according to a second embodiment of the present invention from one viewing angle;

[0034] Figure 6is a schematic structural diagram of the battery module according to the second embodiment of the present invention from another viewing angle;

[0035] Figure 7 This is a schematic diagram of the structure of the battery system according to the third embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the transmission module according to the third embodiment of the present invention;

[0037] Fig. 9 This is a schematic diagram of the structure of the protective cover according to the third embodiment of the present invention;

[0038] Fig.10 This is a disassembly diagram of the control module according to the third embodiment of the present invention;

[0039] Fig.11 This is a schematic diagram of the structure of the control module according to the third embodiment of the present invention;

[0040] Fig.12 This is the elastic protective cap described in Example 3 of the present invention.

[0041] Description of reference numerals:

[0042] 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;

[0043] 100, control module; 200, battery module; 300, transmission module;

[0044] 101, mounting hole; 102, mounting cavity;

[0045] 201, module housing; 2011, first 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, liquid inlet connecting pipe; 210, liquid outlet connecting pipe;

[0046] 301, upper shell; 302, lower shell; 303, through hole; 304, elastic protective cap; 3041, annular groove; 305, high-pressure output port; 306, first liquid inlet; 307, first liquid outlet;

[0047] 401, first liquid inlet pipe; 402, first liquid outlet pipe; 403, second liquid outlet pipe; 404, second liquid inlet pipe;

[0048] 1001, protective cover body; 1002, elastic sealing body; 1003, second external thread. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] 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.

[0052] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0053] Embodiment 1

[0054] This embodiment relates to a battery module 2, including a module housing 201 having a receiving cavity, and a battery cell unit arranged in the receiving cavity. A cold plate 205 arranged around the battery cell unit is arranged in the receiving cavity, and a connecting pipe extending out of the module housing 201 is arranged on the cold plate 205, and the connecting pipe is used to connect the cold plate 205 with an external cooling pipeline.

[0055] The battery module 2 described in this embodiment is provided with a cold plate 205 arranged around the battery cell unit in the accommodating cavity of the module shell 201, and the cold plate 205 is provided with a connecting pipe extending out of the module shell 201. The external cooling pipeline inputs the cooling medium into the cold plate 205 through the connecting pipe to cool the battery cell unit, and has good cooling efficiency, which is beneficial to improving the performance and safety of the battery module 2.

[0056] Based on the above overall introduction, an exemplary structure of the battery module 2 described in this embodiment is as follows: Figure 1 to Figure 2 As a preferred embodiment, the module housing 201 is provided with a first mounting portion, and the first mounting portion is used to detachably mount the module housing 201 on an external carrier.

[0057] Specifically, the first mounting portion includes a first external thread 2011 provided on the module housing 201, and a first internal thread is provided on the external carrier to be threadedly engaged with the first external thread 2011. The battery module 2 can be mounted on the external carrier by threading the first external thread 2011 with the first internal thread, which has the advantages of convenient operation and easy implementation. The detachable connection between the battery module 2 and the external carrier facilitates the replacement and maintenance of the battery module 2, and helps to reduce the cost of replacement and maintenance of the battery module 2.

[0058] As a preferred embodiment, Figure 1 and Figure 3 As shown in the figure, the battery cell unit includes a plurality of fan-shaped battery cells 204 that form a circle. The fan-shaped battery cells 204 here have the same structure as the traditional square battery cells 204, and the only difference is the shape of the battery cells 204. Among them, the number of battery cells 204 in this embodiment 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 the specific implementation, the number of battery cells 204 can also be increased or decreased according to the use requirements.

[0059] 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 to cooperate, 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, the process feasibility and manufacturing feasibility are ensured, and a single fan-shaped battery cell 204 is easy to replace and repair if there is a problem or damage.

[0060] 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.

[0061] like Figure 1 As shown in FIG. 2 , the opening of the module housing 201 is sealed 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 performance 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.

[0062] The explosion-proof valve 202 is arranged at an end opposite to the electrical connector 208 , which helps to reduce the impact of thermal runaway on the electrical connector 208 and the transmission module 300 , thereby improving the safety of the battery module 200 .

[0063] In addition, an elastic pad 203 is provided at one end of the accommodating cavity, and the elastic pad 203 is sandwiched between the module shell 201 and the battery cell unit. Here, the elastic pad 203 is specifically provided at one end of the module shell 201 that is opposite to the opening. Preferably, the edge of the elastic pad 203 is also located between the module shell 201 and the cold plate 205. This helps prevent the battery cell unit and the cold plate 205 from colliding with the module shell 201, thereby improving the safety of the battery module 2.

[0064] Specifically, if Figure 2 As shown in , 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 wire 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 wire 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.

[0065] The high-voltage wiring harness in this embodiment is connected to the battery exchange unit 8, and the total positive output pole and the total negative output pole of each battery module 2 are aggregated and connected at the battery exchange unit 8, and the high-voltage electricity is transmitted to the BDU5 through the battery exchange unit 8 and the high-voltage output port 305 described below, and the electric energy of the battery module 2 is transmitted to the power device through the battery exchange unit 8.

[0066] When installing the battery module 2 in this embodiment, first place the multiple battery cells 204 in the cold plate 205, then install them into the module housing 201 along with the cold plate 205, and then connect the cover plate 207 to the module housing 201. When the battery module 2 needs to be installed on an external carrier, the first external thread 2011 on the module housing 201 is screwed with the first internal thread on the external carrier. When the battery module 2 needs to be removed, the connection between the battery module 2 and the external carrier can be released by rotating the module housing 201 in the opposite direction.

[0067] The battery module 2 in this embodiment has a simple structure, is easy to process and shape, has a good use effect, and has good practicality.

[0068] Embodiment 2

[0069] This embodiment relates to a battery module 200, comprising a mounting base 1 having a mounting cavity 102, and the battery module 2 of the first embodiment, wherein the battery module 2 is disposed in the mounting cavity 102. Figures 4 to 6As shown in , both ends of the installation cavity 102 are through-set, the installation cavity 102 is provided with the above-mentioned first internal thread, and the battery module 2 is installed in the installation cavity 102 by screwing the first external thread 2011 and the first internal thread.

[0070] As a preferred embodiment, the mounting base 1 is provided with a second mounting portion, and the second mounting portion is used to detachably mount the mounting base 1 on the electrical device. Figure 5 and Figure 6 As shown in , the second mounting portion includes a plurality of mounting holes 101 disposed at both ends of the mounting base 1. The mounting base 1 is specifically screwed to the electrical equipment through bolts passing through the mounting holes 101, and can be detachably mounted on the electrical equipment. The mounting base 1 is detachably mounted on the electrical equipment through the second mounting portion, which facilitates the disassembly of the mounting base 1, thereby replacing the battery module 2, and further helps to improve the efficiency of battery replacement. Of course, the mounting base 1 can also be detachably mounted on the electrical equipment by other connection methods, which are not specifically limited here.

[0071] In specific implementation, the mounting base 1 can be installed at a location such as the periphery of the chassis, the bottom of the trunk, or the front cabin, so as to facilitate the replacement of the battery module 200 and the battery module 2 to achieve the charging effect. Of course, when arranged, the position of the mounting base 1 can also be adjusted according to the requirements of operational convenience and arrangement space.

[0072] The battery module 200 described in this embodiment is provided with a mounting seat 1 having a mounting cavity 102, and the battery module 2 is arranged in the mounting cavity 102, so that the mounting seat 1 as an external carrier has the advantages of simple structure and easy arrangement and implementation. At the same time, installing the battery module 2 in the mounting cavity 102 can also further improve the connection strength of the battery module 2 on the mounting seat 1 while the battery module 2 is arranged.

[0073] Embodiment 3

[0074] This embodiment relates to a battery system, including the battery module 200 as described above. Figure 7 As shown in , the battery system further includes a control module 100 and a transmission module 300 that detachably connects the control module 100 and the battery module 200 together.

[0075] The control module 100 includes a cooling chamber 4 connected to the cooling pipeline of the electrical equipment, and a battery replacement unit 8 for supplying power to the electrical equipment. The transmission module 300 includes a pipeline connecting the cooling chamber 4 and the cold plate 205, and a wiring harness electrically connected between the battery cell unit and the battery replacement unit 8.

[0076] In the battery system described in the present 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 the supply of power to the electrical equipment, 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, and 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 facilitates the replacement and maintenance of the battery module 2, thereby improving the use effect of the battery system.

[0077] In terms of specific structure, Figure 7 and Figure 8 As shown in FIG. 1 , a protective cover 10 is provided at one end of the installation cavity 102. The above-mentioned wire harness and pipeline are wrapped together by an insulating layer. For the convenience of description, the wire harness and pipeline wrapped together by the insulating layer are referred to as transmission line 9. The wire harness and pipeline pass through the protective cover 10, and the insulating layer is inserted in the protective cover 10 with interference fit. That is, the transmission line 9 is arranged through the protective cover 10.

[0078] 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 safety of the wiring harness and the pipeline, and the transmission line 9 passes through the protective cover 10 provided at one end of the installation cavity 102, and the transmission line 9 is inserted in the protective cover 10 with an interference fit, which is beneficial to improving the sealing effect between the transmission line 9 and the installation cavity 102 in the connected state.

[0079] Combination Figure 8 and Fig. 9 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 connected to the inside of the protective cover body 1001. Among them, the outer periphery of the protective cover body 1001 is provided with a second external thread 1003, and the end of the mounting cavity 102 is provided with a second internal thread.

[0080] The module housing 201 is inserted into the corresponding installation cavity 102 and installed in the installation cavity 102 by screwing the second external thread 2011 with the second internal thread. After the wiring harness and the pipeline are connected to the corresponding structure on the battery module 2, the protective cover 10 slides relative to the transmission line 9 and is connected to the mounting seat 1 by screwing the second internal thread with the second external thread 1003. Here, the first external thread 2011 and the second external thread 1003 have opposite rotation directions to improve the convenience of installing the battery module 2 and the protective cover 10.

[0081] 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.

[0082] like Figure 6 As shown in , in this embodiment, the mounting cavities 102 are arranged at intervals along the length direction of the mounting base 1, and the battery modules 2 and the transmission lines 9 are arranged one by one in correspondence with the mounting cavities 102, which is conducive to further increasing the power of the battery module 200 and improving the endurance. In addition, in order to improve the arrangement effect of the transmission lines 9, the ends of the multiple transmission lines 9 connected to the control module 100 are also wrapped with an insulating layer.

[0083] 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 seat 1 separately and detachably, each battery module 2 is arranged in a mounting cavity 102 independent of each other on the mounting seat 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 vehicle battery system.

[0084] 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. With this arrangement, the cooling medium of the electrical equipment is transported to the cold plate 205 through the cooling bin 4, which is beneficial to improve the utilization rate of the cooling medium and reduce production costs. Providing the cooling bin 4 and the battery exchange unit 8 in the accommodating cavity is beneficial 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 in use.

[0085] Specifically, the box body 3 includes a lower shell 302 and an upper shell 301 that are buckled and connected. The cooling chamber 4 is provided with a first liquid inlet pipe 401 and a first liquid outlet pipe 402. Corresponding to the first liquid inlet pipe 401 and the first liquid outlet pipe 402, the lower shell 302 is provided with a first liquid inlet port 306 connected to the first liquid inlet pipe 401 and a first liquid outlet port 307 connected to the first liquid outlet pipe 402. The cooling medium in the vehicle cooling system flows into the cooling chamber 4 through the first liquid inlet port 306, and flows out of the cooling chamber 4 through the first liquid outlet port 307.

[0086] The connecting pipes include a liquid inlet connecting pipe 209 for inputting cooling medium into the cold plate 205, and a liquid outlet connecting pipe 210 for outputting cooling medium to the outside. The cooling medium flows into the cold plate 205 through the liquid inlet connecting pipe 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 liquid outlet connecting pipe 210.

[0087] In addition, the external cooling pipeline includes a second liquid inlet pipe 404 and a second liquid outlet pipe 403 provided on the cooling chamber 4, wherein the second liquid outlet pipe 403 is connected to the liquid inlet connecting pipe 209, and the second liquid inlet pipe 404 is connected to the liquid outlet connecting pipe 210. The cooling medium flows into the cold plate 205 through the second liquid inlet pipe 404 and the liquid inlet connecting pipe 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 liquid outlet connecting pipe 210 and the second liquid outlet pipe 402.

[0088] 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 liquid inlet connecting pipe 209 and the second liquid inlet pipe 404, as well as the liquid outlet connecting pipe 210 and the second liquid outlet pipe 403 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.

[0089] Preferably, the accommodating cavity is provided with a fuse box 7, a BDU 5 and a BMS 6 fixed on the cooling bin 4. 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 arrangement of the electrical components by selectively placing the electrical components in the accommodating cavity according to needs. It should be noted that the solution of arranging only one of the fuse box 7, the BDU 5 and the BMS 6 on the cooling bin 4 is also feasible.

[0090] Among them, the high-voltage wire 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 aggregating the positive and negative electrodes of each battery module 2. The BDU5 plays the role of controlling the on and off of the high-voltage wire harness. In addition, a high-voltage output port 305 electrically connected to the battery exchange unit 8 is provided on the lower shell 302.

[0091] When the battery system supplies power to electrical equipment, each battery module 2 can transmit electrical energy to the battery exchange unit 8 through a high-voltage wiring harness. The battery exchange unit 8 aggregates the transmitted electrical energy and outputs high-voltage electricity to the outside through BDU5 and the high-voltage output port 305, thereby realizing external power supply to meet the usage requirements of electrical components on the electrical equipment.

[0092] 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 As shown in the figure, the through hole 303 here is specifically located on the lower shell body 302. In order to improve the installation effect of the wiring harness on the box body 3, an elastic protective cap 304 in the through hole 303 is provided with a through channel, and the insulating layer wrapped around the wiring harness and the outside of the pipeline (that is, the insulating layer wrapped around the outside of the multiple transmission lines 9) is interference-inserted in the channel.

[0093] Among them, Fig.12 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 in which the guide part is only provided at one end of the elastic protective cap 304 is also feasible.

[0094] 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 connection between the liquid inlet connecting pipe 209 and the second liquid inlet pipe 404, and the liquid outlet connecting pipe 210 and the second liquid outlet pipe 403 are respectively disconnected. Then, the battery module 2 is rotated in the opposite direction, so that the battery module 2 is released from the screw connection with the mounting cavity 102, and the battery module 2 is removed.

[0095] 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 plugged and connected to the high-voltage interface, the low-voltage harness is plugged and connected to the low-voltage interface, the liquid inlet connecting pipe 209 is connected to the second liquid inlet pipe 404 by snap connection, and the liquid outlet connecting pipe 210 is connected to the second liquid outlet pipe 403 by snap connection. 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.

[0096] The battery system in this embodiment can quickly provide electrical energy to electrical equipment by replacing the battery module 200 or the battery module 2, which greatly shortens the energy replenishment time, is beneficial to improving the charging efficiency of the battery system, and has good safety of use.

[0097] In addition, the form of the battery system in this embodiment can be changed at will according to the needs of the power-consuming equipment, so that the battery system can be arranged in a suitable structure under the premise of ensuring that energy can be provided to the power-consuming equipment, and it can facilitate the replacement of the battery module 200. In specific implementation, the power-consuming equipment can be a product with power demand, such as a vehicle.

[0098] 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 module, characterized in that: It comprises a mounting seat having a mounting cavity, and a battery module arranged in the mounting cavity; The battery module comprises a module housing having a receiving cavity, and a battery cell unit arranged in the receiving cavity. One end of the module shell is open, and the opening of the module shell is blocked by a cover plate provided on the module shell, and an explosion-proof valve is provided at one end of the module shell, and the battery cell unit includes an electrical connector provided at the other end of the module shell, and the electrical connector includes a high-voltage interface provided on the cover plate and electrically connected to the busbar, and a low-voltage interface electrically connected to the collection component; A cold plate arranged around the battery cell unit is provided in the accommodating cavity, and a connecting pipe extending out of the module housing is provided on the cold plate, and the connecting pipe is used to connect the cold plate with an external cooling pipeline; The module housing is provided with a first mounting portion on the outside. The first mounting portion is used to detachably mount the module housing on the mounting seat. The first mounting portion includes an external thread disposed on the module housing.

2. The battery module according to claim 1, characterized in that: The battery cell unit includes a plurality of sector-shaped battery cells forming a circle.

3. The battery module according to claim 1, characterized in that: An elastic pad is provided at one end of the accommodating cavity, and the elastic pad is sandwiched between the module shell and the battery cell unit.

4. The battery module according to claim 1, characterized in that: The mounting base is provided with a second mounting portion, and the second mounting portion is used to detachably mount the mounting base on the electrical equipment.

5. A battery system, characterized in that: A battery module comprising any one of claims 1 to 4.

6. The battery system according to claim 5, characterized in that: Also included is a control module, and a transmission module for detachably connecting the control module and the battery module; The control module includes a cooling chamber connected to a cooling pipeline of the electric device, and a power exchange unit for supplying power to the electric device; The transmission module includes a pipeline connecting the cooling chamber and the cold plate, and a wiring harness connected between the battery cell unit and the battery replacement unit.

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