Immersed liquid cooling system, energy storage system and electric equipment

Abstract

The invention provides an immersed liquid cooling system, an energy storage system and electric equipment, and relates to the technical field of energy storage. The immersed liquid cooling system comprises a battery pack, a first signal transmitting and receiving device and an electronic device, the battery pack comprises a box body, a second signal transmitting and receiving device, a signal processing module and at least one battery module, a containing cavity is formed in the box body, and the containing cavity is used for containing cooling liquid; the second signal receiving and transmitting device, the signal processing module and the at least one battery module are arranged in the accommodating cavity, the second signal receiving and transmitting device is arranged on the inner wall of the box body or an internal structure in the accommodating cavity, and the first signal receiving and transmitting device and the electronic device are located outside the box body; and the first signal receiving and transmitting device and the second signal receiving and transmitting device are in wireless communication connection. Wireless transmission of data between the inside and the outside of the box body is achieved through the first signal receiving and transmitting device and the second signal receiving and transmitting device, it is avoided that holes are formed in the box body, and therefore the sealing performance of the box body is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of energy storage technology, and in particular to an immersion liquid cooling system, an energy storage system, and an electrical device. Background Art

[0002] Lithium-ion batteries are widely used in various fields of production and life due to their high energy density and long cycle life. As lithium-ion battery technology and processes continue to mature, the capacity of individual cells is increasing. Currently, batteries with capacities exceeding 500Ah have emerged and are gradually gaining application. To ensure a long cycle life and good charge and discharge performance, effective temperature control (i.e., thermal management) is necessary.

[0003] Immersion cooling involves immersing the battery module in coolant to achieve battery cooling. Electronic components can be completely immersed in the coolant within the battery pack enclosure. Data is typically transmitted from inside the enclosure to the Battery Management Unit (BMU) outside the enclosure via wired transmission. This requires openings in the enclosure to facilitate the passage of wiring harnesses, making it difficult to ensure the enclosure's tightness. Summary of the Invention

[0004] In view of this, an embodiment of the present application provides an immersion liquid cooling system, an energy storage system, and electrical equipment for improving the sealing performance of a box.

[0005] A first aspect provides an immersion liquid cooling system, comprising: a battery pack, a first signal transceiver device, and an electronic device, wherein the battery pack comprises a housing, a second signal transceiver device, a signal processing module, and at least one battery module; a receiving cavity is provided in the housing, the receiving cavity is used to receive a coolant, the second signal transceiver device, the signal processing module, and the at least one battery module are disposed in the receiving cavity, the second signal transceiver device is disposed on an inner wall of the housing or on an internal structure within the receiving cavity, the first signal transceiver device and the electronic device are located outside the housing; the first signal transceiver device and the second signal transceiver device are wirelessly connected; The signal processing module is used to convert the acquired first data of at least one battery module into a first wireless communication signal; the second signal transceiver is used to send the first wireless communication signal; the first signal transceiver is used to receive the first wireless communication signal and send the first wireless communication signal to the electronic device; or, The electronic device is used to convert the second data into a second wireless communication signal and send the second wireless communication signal to the first signal transceiver device; the first signal transceiver device is used to send the second wireless communication signal; the second signal transceiver device is used to receive the second wireless communication signal and send the second wireless communication signal to the signal processing module.

[0006] In a possible implementation, the first wireless communication signal and the second wireless communication signal are both low-frequency electromagnetic signals.

[0007] In a possible implementation, the first signal transceiver device and the second signal transceiver device are disposed at corresponding positions inside and outside the box.

[0008] In a possible implementation manner, a first insulating layer is provided between the second signal transceiver device and the side wall.

[0009] In a possible implementation, the internal structure includes a first bracket, the first bracket is arranged on the inner wall of the box, and the second signal transceiver device is fixed on the first bracket.

[0010] In a possible implementation, the internal structure includes a first printed circuit board, and the first printed circuit board is disposed in the accommodating cavity; The second signal transceiver device and the signal processing module are integrated on the first printed circuit board.

[0011] In a possible implementation, the first printed circuit board is provided with a plug hole, and the second signal transceiver device and the signal processing module are arranged on the first printed circuit board by inserting pins into the corresponding plug holes; or, The second signal transceiver device and the signal processing module are soldered on the first printed circuit board by patch method.

[0012] In a possible implementation, the first printed circuit board is fixed to the inner wall of the box, and a second insulating layer is provided between the first printed circuit board and the inner wall; or, The internal structure further includes a second bracket, which is arranged on the inner wall of the box body, and the first printed circuit board is fixed on the second bracket.

[0013] In a possible implementation, the battery module is provided with an end plate, the internal structure includes the end plate of any one of the battery modules, and the second signal transceiver is provided on the end plate of any one of the battery modules.

[0014] In a possible implementation, the battery module is provided with an end plate, the internal structure includes the end plate of any one of the battery modules, and the first printed circuit board is provided on the end plate of any one of the battery modules.

[0015] In a possible implementation, the first signal transceiver device is disposed on an outer wall of the box, and a third insulating layer is disposed between the first signal transceiver device and the outer wall.

[0016] In a possible implementation, the second signal transceiver device is disposed on an inner side of a side wall of the box, and the first signal transceiver device is disposed on an outer side of the side wall.

[0017] In a possible implementation, a third bracket is provided on the outer wall of the box, and the first signal transceiver is fixed on the third bracket.

[0018] In one possible implementation, the electronic device includes a signal processing device and a battery management unit; The battery management unit is configured to send the second data to the signal processing device; The signal processing device is used to convert the second data into the second wireless communication signal, and send the second wireless communication signal to the first signal transceiver.

[0019] In a possible implementation, the battery management unit includes a second printed circuit board, and the signal processing device and the first signal transceiver device are integrated on the second printed circuit board.

[0020] In a possible implementation, the second printed circuit board is provided with a plug hole, and the signal processing device and the first signal transceiver are provided on the second printed circuit board by inserting pins into the corresponding plug holes; or, The signal processing device and the first signal transceiver are soldered on the second printed circuit board by patch method.

[0021] In a possible implementation, the battery management unit is fixed to the outer wall of the box, and a fourth insulating layer is provided between the battery management unit and the outer wall; or, A fourth bracket is provided on the outer wall of the box body, and the battery management unit is fixed on the fourth bracket.

[0022] In a possible implementation, the first signal transceiver device is a first electromagnetic coil, and the second signal transceiver device is a second electromagnetic coil.

[0023] In a possible implementation, the battery module includes at least one battery cell, and the first data includes battery data of each of the battery cells.

[0024] In a possible implementation manner, the second data includes control instruction data.

[0025] A second aspect provides an energy storage system, comprising: at least one immersion liquid cooling system according to the first aspect or any possible implementation of the first aspect.

[0026] A third aspect provides an electrical device, comprising: at least one immersion liquid cooling system according to the first aspect or any possible implementation of the first aspect.

[0027] In the technical solution provided in the embodiment of the present application, the immersion liquid cooling system includes a battery pack, a first signal transceiver device and an electronic device, the battery pack includes a case, a second signal transceiver device, a signal processing module and at least one battery module, the second signal transceiver device, the signal processing module and at least one battery module are arranged in the accommodating cavity of the case, the second signal transceiver device is arranged on the inner wall of the case, the first signal transceiver device and the electronic device are located outside the case, and the first signal transceiver device and the second signal transceiver device are wirelessly connected. Wireless transmission of data between the inside and outside of the case is achieved through the first signal transceiver device and the second signal transceiver device, avoiding the need for openings in the case, thereby improving the sealing of the case. In the embodiment of the present application, wireless transmission of data between the inside and outside of the case is achieved through the first signal transceiver device and the second signal transceiver device, avoiding electromagnetic interference caused by a large number of wiring harnesses, thereby improving the accuracy of data transmission and achieving better signal transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A schematic structural diagram of a first immersion liquid cooling system provided in an embodiment of the present application; Figure 2 A schematic diagram of data processing of a signal processing module provided in an embodiment of the present application; Figure 3 A schematic structural diagram of a second immersion liquid cooling system provided in an embodiment of the present application; Figure 4A schematic structural diagram of a third immersion liquid cooling system provided in an embodiment of the present application; Figure 5 A schematic structural diagram of a fourth immersion liquid cooling system provided in an embodiment of the present application; Figure 6A A schematic structural diagram of a fifth immersion liquid cooling system provided in an embodiment of the present application; Figure 6B A schematic structural diagram of a battery module provided in an embodiment of the present application; Figure 7 This is a schematic structural diagram of the sixth immersion liquid cooling system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0033] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0034] Figure 1 This is a schematic structural diagram of the first immersion liquid cooling system provided in the embodiment of the present application, as shown in FIG. Figure 1As shown, the immersion liquid cooling system may include: a battery pack, a first signal transceiver device 11 and an electronic device 12. The battery pack includes a box 13, a second signal transceiver device 14, a signal processing module 15 and at least one battery module. A accommodating cavity 16 is provided in the box 13. The accommodating cavity 16 is used to accommodate a coolant 17. The second signal transceiver device 14, the signal processing module 15 and at least one battery module are arranged in the accommodating cavity 16. The second signal transceiver device 14 is arranged on the inner wall of the box 13. The first signal transceiver device 11 and the electronic device 12 are located outside the box 13. The first signal transceiver device 11 and the second signal transceiver device 14 are wirelessly connected.

[0035] The signal processing module 15 is used to convert the acquired first data of at least one battery module into a first wireless communication signal; the second signal transceiver 14 is used to transmit the first wireless communication signal; and the first signal transceiver 11 is used to receive the first wireless communication signal and transmit the first wireless communication signal to the electronic device 12. This enables the timely transmission of the first data from the interior of the box 13 to the exterior of the box 13 via wireless communication.

[0036] Alternatively, the electronic device 12 is configured to convert the second data into a second wireless communication signal and transmit the second wireless communication signal to the first signal transceiver 11; the first signal transceiver 11 is configured to transmit the second wireless communication signal; and the second signal transceiver 14 is configured to receive the second wireless communication signal and transmit the second wireless communication signal to the signal processing module 15. This allows the second data to be transmitted from the outside of the housing 13 to the inside of the housing 13 in a timely manner via wireless communication.

[0037] In the embodiment of the present application, the first wireless communication signal is a low-frequency electromagnetic signal. As an optional solution, the material of the box 13 can be metal. Normally, when an electromagnetic signal enters metal, it will decay exponentially with the depth of the metal, so it is difficult for the electromagnetic signal to penetrate the metal. However, if the wireless communication signal adopts a low-frequency electromagnetic signal, since the low-frequency electromagnetic signal has a strong penetrating ability, it can relatively easily penetrate the metal, that is, the first wireless communication signal can relatively easily penetrate the box 13. Figure 1 As shown, the first wireless communication signal sent by the second signal transceiver 14 located inside the box 13 is a low-frequency electromagnetic signal, which penetrates the box 13 and is received by the first signal transceiver 11 located outside the box 13.

[0038] In the embodiment of the present application, the second wireless communication signal is a low-frequency electromagnetic signal. The second wireless communication signal can relatively easily penetrate the box 13. Figure 1As shown, the second wireless communication signal sent by the first signal transceiver 11 located outside the box 13 is a low-frequency electromagnetic signal, which penetrates the box 13 and is received by the second signal transceiver 14 located inside the box 13.

[0039] In the embodiment of the present application, the low-frequency electromagnetic signal can penetrate the box 13, especially the box 13 made of metal material, thereby overcoming the shielding effect of the box 13 on the signal, so that data can be transmitted between the inside and outside of the box 13 through the low-frequency electromagnetic signal.

[0040] As an optional solution, the frequency range of the low-frequency electromagnetic signal may include 30KHz to 300KHz, for example, the frequency of the low-frequency electromagnetic signal is 100KHz or 125KHz. In the embodiment of the present application, the low-frequency electromagnetic signal with a frequency range of 30KHz to 300KHz has high penetration efficiency, so that the signal can better penetrate the metal box 13. If the frequency of the electromagnetic signal is too small or too large, the penetration efficiency of the electromagnetic signal is reduced, so that the signal has a poor effect of penetrating the metal box 13. Therefore, the embodiment of the present application adopts a low-frequency electromagnetic signal with a frequency range of 30KHz to 300KHz so that the signal has a better effect of penetrating the metal box 13, so that the signal can be smoothly sent and received.

[0041] As an optional solution, the first signal transceiver 11 and the second signal transceiver 14 are arranged at corresponding positions inside and outside the box 13, so that the directions of sending and receiving signals of the first signal transceiver 11 and the second signal transceiver 14 are corresponding. At this time, the power of the signal sent in the direction of sending and receiving signals is larger, and the sensitivity of the received signal is higher, thereby further improving the signal transmission effect and making the signal transmission effect better.

[0042] As an alternative, the immersion liquid cooling system can include multiple battery modules. Figure 1 As shown, the immersion liquid cooling system includes four battery modules as an example for description. The four battery modules may include battery module 1, battery module 2, battery module 3, and battery module 4. In actual applications, the immersion liquid cooling system may also include other numbers of battery modules, which is not limited in this embodiment of the present application.

[0043] As an optional solution, each battery module may include at least one battery cell. If the battery module includes multiple battery cells, the multiple battery cells may be electrically connected in series, in parallel, or in series-parallel.

[0044] In the embodiment of the present application, the bandwidth of the wireless communication signal needs to meet the communication requirements. Taking a wireless communication signal with a frequency of 125KHz as an example, if the frequency shift of the wireless communication signal is 50KHz, the bandwidth of the wireless communication signal is 2 50KHz = 100KHz. Taking the double-byte WORD communication method as an example, the bandwidth 100K (bps) can be divided by the number of double-byte bytes 16 to generate the communication speed 6250 WORD / s. That is, the communication speed of 6250 WORD / s can be calculated using the formula 100k (bps) / 16 = 6250 WORD / s.

[0045] Taking the 104S battery module as an example, the 104S battery module may include 104 battery cells connected in series. The collected temperature data includes the temperature data of the 104 battery cells, that is, 104 temperature data; since the 104 battery cells connected in series have 105 collectable electrode terminals, the collected voltage data includes 105 voltage data. Therefore, the amount of data collected can include 105+104=209 data. If the above 209 data are collected once per second, the data collection speed is 209 WORD / s. Since the data collection speed of 209 WORD / s is less than the communication speed of 6250 WORD / s, even if the wireless communication signal is a low-frequency electromagnetic signal, its bandwidth can fully meet the communication requirements.

[0046] As an optional solution, a first insulating layer 18 is provided between the second signal transceiver device 14 and the inner wall of the box body 13 to achieve the purpose of insulating the second signal transceiver device 14 from the inner wall of the box body 13 .

[0047] As an optional solution, the second signal transceiver 14 can be fixed to the inner wall by at least one first fixing component. For example, the first fixing component can be a bolt, and the second signal transceiver 14 can be fixed to the inner wall by the bolt.

[0048] like Figure 1 As shown, the box body 13 may include a cover plate 131, a bottom plate 132 and a plurality of side walls 133, which enclose the box body 13. The inner wall of the box body 13 may include the inner side of the side wall 133, the inner side of the bottom plate 132 and the inner side of the cover plate 131.

[0049] As an optional solution, the second signal transceiver 14 is disposed inside the side wall 133 of the box 13, with a first insulating layer 18 disposed between the second signal transceiver 14 and the side wall 133. The first insulating layer 18 can insulate the second signal transceiver 14 from the box 13, and the second signal transceiver 14 is disposed inside the side wall 133 so as not to occupy too much space inside the box 13.

[0050] like Figure 1 As shown, the signal processing module 15 and the second signal transceiver 14 can be connected by wire. For example, the signal processing module 15 and the second signal transceiver 14 can be connected by a wire harness. The signal processing module 15 can be set at any position within the accommodating cavity 16 that has a placement space. For example, the signal processing module 15 can be set on the inner wall of the box body 13. In this case, an insulating layer can be set between the signal processing module 15 and the box body 13 to achieve the purpose of insulation; or the signal processing module 15 can be set on the end plate of any battery module. Figure 1 Not specifically drawn in the figure.

[0051] like Figure 1 As shown, the signal processing module 15 and the battery module can be connected by wire. Figure 1 Not specifically drawn in the figure.

[0052] As an optional solution, the signal processing module 15 may be a microcontroller unit (MCU).

[0053] As an optional solution, the first signal transceiver 11 is arranged on the outer wall of the box 13, and a third insulating layer 19 is provided between the first signal transceiver 11 and the outer wall of the box 13 to achieve the purpose of insulating the first signal transceiver 11 from the outer wall of the box 13.

[0054] As an optional solution, the first signal transceiver 11 can be fixed to the outer wall by at least one second fixing component. For example, the second fixing component can be a bolt, and the first signal transceiver 11 can be fixed to the outer wall by the bolt.

[0055] like Figure 1 As shown, the outer wall of the box body 13 may include the outer side of the side wall 133 , the outer side of the bottom plate 132 and the outer side of the cover plate 131 .

[0056] As an optional solution, the first signal transceiver 11 is disposed outside the side wall 133 of the box 13, and a third insulating layer 19 is disposed between the first signal transceiver 11 and the side wall 133. The third insulating layer 19 can insulate the first signal transceiver 11 from the box 13.

[0057] In the embodiment of the present application, the first signal transceiver 11 and the second signal transceiver 14 are arranged at corresponding positions on the inner and outer sides of the side wall 133 of the box body 13, so that the directions in which the first signal transceiver 11 and the second signal transceiver 14 send and receive signals are corresponding. At this time, the power of the signal sent in the direction of sending and receiving signals is larger, and the sensitivity of the received signal is higher, thereby further improving the signal transmission effect and making the signal transmission effect better.

[0058] The electronic device 12 may include at least one electronic component. As an alternative, the electronic device 12 may include a signal processing device 121 and a BMU 122. The signal processing device 121 may be connected to the first signal transceiver 11 via a wired connection, and the BMU 122 may be connected to the signal processing device 121 via a wired connection.

[0059] As an optional solution, the BMU 122 is configured to send the second data to the signal processing device 121; the signal processing device 121 is configured to convert the second data into a second wireless communication signal, and send the second wireless communication signal to the first signal transceiver 11. This achieves the conversion of the second data into a wireless communication signal, allowing the second data to be sent in the form of a wireless communication signal.

[0060] In the embodiment of the present application, the BMU is arranged outside the box to facilitate maintenance and replacement, thereby greatly improving the maintainability of the battery pack; at the same time, by arranging the BMU outside the box, there is no need to consider the compatibility of complex electronic components with the coolant, thereby improving the reliability of the battery pack.

[0061] In the embodiment of the present application, the first signal transceiver 11 may be a first electromagnetic coil, and the second signal transceiver 14 may be a second electromagnetic coil. The first electromagnetic coil and the second electromagnetic coil are arranged in corresponding positions. As an optional solution, the first electromagnetic coil and the second electromagnetic coil are arranged coaxially. The magnetic field in the axial direction is the strongest, so that the electromagnetic coil transmits the strongest signal in the axial direction and has a higher sensitivity in receiving the signal, thereby further improving the signal transmission effect and achieving better signal transmission effect.

[0062] As an optional solution, the number of turns of the first electromagnetic coil and the number of turns of the second electromagnetic coil can be set according to actual needs. When the number of turns is too small, the magnetic field of the electromagnetic coil is small, resulting in a decrease in signal power, which is not conducive to signal transmission and reception; when the number of turns is too large, the cost of the electromagnetic coil is high and the volume is large. Therefore, in the embodiment of the present application, the number of turns of the first electromagnetic coil and the number of turns of the second electromagnetic coil can both include 10 turns to 100 turns. The number of turns of the coil is in a moderate range, so that the magnetic field of the electromagnetic coil is larger and the signal power is also larger, thereby improving the signal reception gain; the number of turns of the coil is in a moderate range, which will not cause the cost of the electromagnetic coil to be high and the volume of the electromagnetic coil will not be too large.

[0063] As an optional solution, the shape of the first electromagnetic coil can be circular or square, and the shape of the second electromagnetic coil can be circular or square. In practical applications, the shapes of the first electromagnetic coil and the second electromagnetic coil can also be flexibly set according to actual needs, which will not be listed here one by one.

[0064] In the embodiment of the present application, the first signal transceiver device 11 and the second signal transceiver device 14 both use electromagnetic coils, which are low-cost, thereby reducing the cost of the immersion liquid cooling system; the electromagnetic coils have the characteristic of high stability, thereby improving the stability of the transmission of wireless communication signals between the inside and outside of the box 13.

[0065] Figure 2 This is a schematic diagram of data processing of a signal processing module provided in an embodiment of the present application. Figure 1 and Figure 2 , the transmission process of the wireless communication signal of the immersion liquid cooling system provided in the embodiment of the present application is described in detail.

[0066] As an optional solution, the signal processing module 15 obtains first data from at least one battery module. This first data may include battery data for each battery cell, for example, the battery data may include temperature and / or voltage. The signal processing module 15 performs analog-to-digital (A / D) conversion on the first data to generate a first digital signal, modulates the first digital signal using a carrier signal to generate a first wireless communication signal, and power amplifies the first wireless communication signal. The signal processing module 15 transmits the power-amplified first wireless communication signal to the second signal transceiver 14. The second signal transceiver 14 transmits the first wireless communication signal. The first signal transceiver 11 receives the first wireless communication signal and transmits it to the signal processing device 121. The signal processing device 121 demodulates the first wireless communication signal to generate a first digital signal, and transmits the first digital signal to the BMU 122. The signal modulation may include frequency modulation.

[0067] As another optional solution, BMU 122 transmits second data to signal processing device 121. This second data may include control instruction data, for example, a switch instruction for controlling a switch. Signal processing device 121 performs A / D conversion on the second data to generate a second digital signal, modulates the second digital signal using a carrier signal to generate a second wireless communication signal, and power amplifies the second wireless communication signal. Signal processing device 121 transmits the power-amplified second wireless communication signal to first signal transceiver 11. First signal transceiver 11 transmits the second wireless communication signal. Second signal transceiver 14 receives the second wireless communication signal and transmits it to signal processing module 15. Signal processing module 15 demodulates the second wireless communication signal to generate a second digital signal. Signal modulation may include frequency modulation.

[0068] In the technical solution provided in the embodiment of the present application, the immersion liquid cooling system includes a battery pack, a first signal transceiver device and an electronic device, the battery pack includes a box, a second signal transceiver device, a signal processing module and at least one battery module, the second signal transceiver device, the signal processing module and at least one battery module are arranged in the accommodating cavity of the box, the second signal transceiver device is arranged on the inner wall of the box, the first signal transceiver device and the electronic device are located outside the box, and the first signal transceiver device and the second signal transceiver device are wirelessly connected. Wireless transmission of data between the inside and outside of the box is realized through the first signal transceiver device and the second signal transceiver device, avoiding the need to set openings on the box, thereby improving the sealing of the box.

[0069] In the embodiment of the present application, wireless transmission of data between the inside and outside of the box is achieved through the first signal transceiver device and the second signal transceiver device, avoiding electromagnetic interference caused by a large number of wiring harnesses, thereby improving the accuracy of data transmission and achieving better signal transmission effect.

[0070] Figure 3 This is a schematic diagram of the structure of the second immersion liquid cooling system provided in the embodiment of the present application, as shown in FIG. Figure 3 As shown, this embodiment is different from the above Figure 1 The difference of the illustrated embodiment is that the second signal transceiver 14 is located on the internal structure within the accommodating cavity 16 .

[0071] like Figure 3 As shown, the internal structure includes a first bracket 20, which is disposed on the inner wall of the box body 13, and the second signal transceiver 14 is fixed to the first bracket 20. As an alternative, the first bracket 20 is disposed on the inner side of the side wall 133 of the box body 13, so that the second signal transceiver 14 is fixed to the first bracket 20 on the inner side of the side wall 133.

[0072] This embodiment is different from the above Figure 1 The embodiment shown also differs in that a third bracket 21 is provided on the outer wall of the housing 13, and the first signal transceiver 11 is fixed to the third bracket 21. As an alternative, the third bracket 21 is provided on the outer side of the side wall 133 of the housing 13, so that the first signal transceiver 11 is fixed to the third bracket 21 on the outer side of the side wall 133.

[0073] In the embodiment of the present application, the material of the first bracket 20 may be a material that is insulating and resistant to the coolant 17. As an alternative, the material of the first bracket 20 may include plastic or resin, for example, the plastic may be PET.

[0074] In the embodiment of the present application, the material of the third bracket 21 is an insulating material. As an optional solution, the material of the third bracket 21 may include plastic or resin, for example, the plastic may be PET.

[0075] In the embodiment of the present application, the material of the first bracket 20 is insulating material, so that the second signal transceiver device 14 fixed on the first bracket 20 is insulated from the box 13, and no insulating layer is required; the material of the third bracket 21 is insulating material, so that the first signal transceiver device 11 fixed on the third bracket 21 is insulated from the box 13, and no insulating layer is required.

[0076] like Figure 3 As shown, the first bracket 20 is fixed to the inner side of the side wall 133, for example, the first bracket 20 can be fixed to the inner side of the side wall 133 by bolts; the edge portions of both ends of the second signal transceiver 14 can be fixed to the first brackets 20 at both ends, for example, the edge portions of both ends of the second signal transceiver 14 can be fixed to the corresponding first brackets 20 by bolts. In this way, the second signal transceiver 14 can be stably fixed to the inner wall of the box body 13 through the first bracket 20. As an optional solution, Figure 3 As shown, the first bracket 20 is a bending structure, and the first bracket 20 may include a first fixed portion 201 and a first bent portion 202. The first fixed portion 201 can be fixed to the inner side of the side wall 133, and the edge of the second signal transceiver device 14 can be fixed to the corresponding first fixed portion 201; the first bent portion 202 can clamp the edge of the second signal transceiver device 14, so that the second signal transceiver device 14 is clamped between the first bent portions 202 of the first bracket 20 located at both ends of the second signal transceiver device 14, so that the second signal transceiver device 14 can be more stably fixed to the inner wall of the box body 13.

[0077] like Figure 3 As shown, the third bracket 21 is fixed to the outside of the side wall 133, for example, the third bracket 21 can be fixed to the outside of the side wall 133 by bolts; the edge portions of both ends of the first signal transceiver 11 can be fixed to the third brackets 21 at both ends, for example, the edge portions of both ends of the first signal transceiver 11 can be fixed to the corresponding third brackets 21 by bolts. In this way, the first signal transceiver 11 can be stably fixed to the outer wall of the box body 13 through the third bracket 21. As an optional solution, Figure 3As shown, the third bracket 21 is a bent structure. The third bracket 21 may include a third fixed portion 211 and a third bent portion 212. The third fixed portion 211 may be fixed to the outside of the side wall 133, and the edge of the first signal transceiver device 11 may be fixed to the corresponding third fixed portion 211; the third bent portion 212 may clamp the edge of the first signal transceiver device 11, so that the first signal transceiver device 11 is clamped between the third bent portions 212 of the third bracket 21 located at both ends of the first signal transceiver device 11, so that the first signal transceiver device 11 can be more stably fixed to the outer wall of the box body 13.

[0078] In the embodiment of the present application, when the second signal transceiver device 14 is fixed on the first bracket 20, the fixed position selected on the second signal transceiver device 14 needs to be a position that does not affect signal reception and transmission; when the first signal transceiver device 11 is fixed on the third bracket 21, the fixed position selected on the first signal transceiver device 11 needs to be a position that does not affect signal reception and transmission.

[0079] In practical applications, the structures of the first bracket 20 and the third bracket 21 can be set according to the structures of the first signal transceiver device 11 and the second signal transceiver device 14 to achieve the purpose of matching the brackets with the first signal transceiver device 11 and the second signal transceiver device 14. This embodiment of the present application does not limit this.

[0080] right Figure 3 The description of other structures in the embodiment shown can be found in Figure 1 The description in the illustrated embodiment will not be repeated here.

[0081] As another alternative, the first bracket 20 can also be disposed on the inner side of the bottom plate 132, although this embodiment is not specifically illustrated. In actual applications, the first bracket 20 can also be disposed on other portions of the inner wall, such as the inner side of the cover plate 131, although this is not a limitation of this invention. In the embodiments of the present invention, the first bracket 20 can be disposed at multiple different locations on the inner wall, thereby achieving flexible positioning of the first bracket 20.

[0082] In this embodiment of the present application, the second signal transceiver device is fixed by the first bracket, so that the second signal transceiver device can be stably fixed to the inner wall of the box. Moreover, the use of the first bracket to fix the second signal transceiver device eliminates the need for an insulating layer. In this embodiment of the present application, the first signal transceiver device is fixed by the third bracket, so that the first signal transceiver device can be stably fixed to the outer wall of the box.

[0083] As an optional solution, the second signal transceiver 14 and the signal processing module 15 can be integrated. The signal processing device 121 and the first signal transceiver 11 are integrated with the BMU 122 .

[0084] Figure 4 This is a schematic diagram of the structure of the third immersion liquid cooling system provided in the embodiment of the present application, as shown in FIG. Figure 4 As shown, this embodiment is different from the above Figure 1 The difference of the illustrated embodiment is that the second signal transceiver 14 is located on the internal structure within the accommodating cavity 16 .

[0085] like Figure 4 As shown, the internal structure includes a first printed circuit board 22 , which is disposed in the accommodating cavity 16 . The second signal transceiver 14 and the signal processing module 15 are integrated on the first printed circuit board 22 .

[0086] As an optional solution, according to the circuit setting requirements of the printed circuit board, the second signal transceiver 14 and the signal processing module 15 can be set on the same side or different sides of the first printed circuit board 22. As an optional solution, if Figure 4 As shown, the second signal transceiver 14 and the signal processing module 15 are disposed on different sides of the first printed circuit board 22. For example, the second signal transceiver 14 is disposed on a side of the first printed circuit board 22 close to the first signal transceiver 11, and the signal processing module 15 is disposed on a side of the first printed circuit board 22 away from the first signal transceiver 11. The second signal transceiver 14 is located on a side close to the first signal transceiver 11, allowing the second signal transceiver 14 to be disposed in a better corresponding position to the first signal transceiver 11, ensuring that the directions of signal transmission and reception of the first and second signal transceiver 11 and 14 are corresponding. This results in a higher power of the transmitted signal in the direction of signal transmission and reception, and a higher sensitivity of the received signal, thereby further improving the signal transmission effect and achieving a better signal transmission effect.

[0087] As an optional solution, the first printed circuit board 22 is provided with a plug hole, and the second signal transceiver device 14 and the signal processing module 15 are installed on the first printed circuit board 22 by inserting pins into the corresponding plug holes. As another optional solution, the second signal transceiver device 14 and the signal processing module 15 are soldered to the first printed circuit board 22 by surface mount technology. The first printed circuit board 22 is provided with printed wiring, and the second signal transceiver device 14 and the signal processing module 15 can be electrically connected via the printed wiring.

[0088] like Figure 4As shown, first printed circuit board 22 is fixed to the inner wall of box 13. A second insulating layer 23 is provided between first printed circuit board 22 and the inner wall to insulate first printed circuit board 22 from the inner wall of box 13. As an alternative, first printed circuit board 22 can be fixed to the inner wall using at least one third fixing member. For example, the third fixing member can be a bolt, which secures first printed circuit board 22 to the inner wall.

[0089] As an optional solution, the first printed circuit board 22 can be fixed to the inner side of the side wall 133 of the box body 13, with a second insulating layer 23 disposed between the first printed circuit board 22 and the side wall 133. The second insulating layer 23 can insulate the first printed circuit board 22 from the side wall 133. The first printed circuit board 22 is disposed inside the side wall 133 so as not to occupy too much space inside the box body 13.

[0090] like Figure 4 As shown, the second signal transceiver 14 is disposed on a side of the first printed circuit board 22 close to the side wall 133, and the signal processing module 15 is disposed on a side of the first printed circuit board 22 away from the side wall 133. The second insulating layer 23 is also located between the second signal transceiver 14 and the side wall 133 and can cover the second signal transceiver 14.

[0091] In the embodiment of the present application, the second signal transceiver 14 and the signal processing module 15 are integrated on the first printed circuit board 22 , and the first printed circuit board 22 is arranged on the inner side of the side wall 133 so as not to occupy too much internal space of the box 13 .

[0092] In the embodiment of the present application, the second signal transceiver device 14 and the signal processing module 15 are integrated on the first printed circuit board 22 , thereby ensuring the stability and reliability of the electrical connection between the second signal transceiver device 14 and the signal processing module 15 .

[0093] This embodiment is different from the above Figure 1 The embodiment shown is also different in that the BMU 122 includes a second printed circuit board 24 , and the signal processing device 121 and the first signal transceiver device 11 are integrated on the second printed circuit board 24 .

[0094] As an optional solution, according to the circuit setting requirements of the printed circuit board, the signal processing device 121 and the first signal transceiver device 11 can be set on the same side or different sides of the second printed circuit board 24. As an optional solution, if Figure 4As shown, the signal processing device 121 and the first signal transceiver device 11 are arranged on different sides of the second printed circuit board 24. For example, the first signal transceiver device 11 is arranged on a side of the second printed circuit board 24 close to the second signal transceiver device 14, and the signal processing device 121 is arranged on a side of the second printed circuit board 24 away from the second signal transceiver device 14. The second signal transceiver device 14 is located on a side close to the first signal transceiver device 11, so that the second signal transceiver device 14 can be arranged in a better corresponding position to the first signal transceiver device 11, ensuring that the directions of signal transmission and reception of the first signal transceiver device 11 and the second signal transceiver device 14 are corresponding, so that the power of the transmitted signal in the direction of signal transmission and reception is greater and the sensitivity of the received signal is higher, thereby further improving the signal transmission effect and achieving better signal transmission effect.

[0095] As an optional solution, the second printed circuit board 24 is provided with a plug hole, and the signal processing device 121 and the first signal transceiver device 11 are installed on the second printed circuit board 24 by inserting pins into the corresponding plug holes. As another optional solution, the signal processing device 121 and the first signal transceiver device 11 are soldered to the second printed circuit board 24 by surface mount technology. The second printed circuit board 24 is provided with printed wiring, and the signal processing device 121 and the first signal transceiver device 11 can be electrically connected via the printed wiring.

[0096] like Figure 4 As shown, BMU 122 is fixed to the outer wall of housing 13. A fourth insulating layer 25 is provided between BMU 122 and the outer wall to insulate BMU 122 from the outer wall of housing 13. Alternatively, BMU 122 can be fixed to the outer wall using at least one fourth fixing member. For example, the fourth fixing member can be a bolt, which secures BMU 122 to the outer wall.

[0097] As an optional solution, the BMU 122 can be fixed to the inner side of the side wall 133 of the box body 13, with a fourth insulating layer 25 disposed between the BMU 122 and the side wall 133. The fourth insulating layer 25 can insulate the BMU 122 from the side wall 133.

[0098] like Figure 4 As shown, the first signal transceiver 11 is disposed on a side of the second printed circuit board 24 close to the side wall 133 , and the signal processing device 121 is disposed on a side of the second printed circuit board 24 away from the side wall 133 .

[0099] right Figure 4 The description of other structures in the embodiment shown can be found in Figure 1 The description in the illustrated embodiment will not be repeated here.

[0100] In the embodiment of the present application, the signal processing device 121 and the first signal transceiver 11 are integrated on the second printed circuit board 24 of the BMU 122, thereby ensuring the stability and reliability of the electrical connection between the signal processing device 121, the first signal transceiver 11 and the BMU 122.

[0101] Figure 5 This is a schematic structural diagram of the fourth immersion liquid cooling system provided in the embodiment of the present application, as shown in FIG. Figure 5 As shown, this embodiment is different from the above Figure 4 The embodiment shown differs in that the internal structure further includes a second bracket 26, which is disposed on the inner wall of the housing 13, and the first printed circuit board 22 is fixed to the second bracket 26. As an alternative, the second bracket 26 is disposed on the inner side of the side wall 133 of the housing 13, so that the first printed circuit board 22 is fixed to the second bracket 26 on the inner side of the side wall 133.

[0102] This embodiment is different from the above Figure 4 The illustrated embodiment also differs in that a fourth bracket 27 is provided on the outer wall of the housing 13, and the BMU 122 is secured to the fourth bracket 27. Alternatively, the fourth bracket 27 may be provided on the outer side of the side wall 133 of the housing 13, thereby securing the BMU 122 to the fourth bracket 27 on the outer side of the side wall 133.

[0103] In the embodiment of the present application, the material of the second bracket 26 may be a material that is insulating and resistant to the coolant 17. As an alternative, the material of the second bracket 26 may include plastic or resin, for example, the plastic may be PET.

[0104] In the embodiment of the present application, the material of the fourth bracket 27 is an insulating material. As an optional solution, the material of the fourth bracket 27 may include plastic or resin, for example, the plastic may be PET.

[0105] In the embodiment of the present application, the second bracket 26 is made of insulating material, so that the first printed circuit board 22 fixed on the second bracket 26 is insulated from the box 13, and no insulating layer is required. The fourth bracket 27 is made of insulating material, so that the BMU 122 fixed on the fourth bracket 27 is insulated from the box 13, and no insulating layer is required.

[0106] like Figure 5As shown, the second bracket 26 is fixed to the inner side of the side wall 133, for example, the second bracket 26 can be fixed to the inner side of the side wall 133 by bolts; the edges of the two ends of the first printed circuit board 22 can be fixed to the second brackets 26 at both ends, for example, the edges of the two ends of the first printed circuit board 22 can be fixed to the corresponding second brackets 26 by bolts. In this way, the first printed circuit board 22 can be stably fixed to the inner wall of the box body 13 through the second bracket 26. As an optional solution, Figure 5 As shown, the second bracket 26 is a bending structure, and the second bracket 26 may include a second fixed portion 261 and a second bent portion 262. The second fixed portion 261 can be fixed to the inner side of the side wall 133, and the edge of the first printed circuit board 22 can be fixed to the corresponding second fixed portion 261; the second bent portion 262 can clamp the edge of the first printed circuit board 22, so that the first printed circuit board 22 is clamped between the second bent portions 262 of the second bracket 26 located at both ends of the first printed circuit board 22, so that the first printed circuit board 22 can be more stably fixed to the inner wall of the box body 13.

[0107] like Figure 5 As shown, the fourth bracket 27 is fixed to the outer side of the side wall 133, for example, the fourth bracket 27 can be fixed to the outer side of the side wall 133 by bolts; the edge portions of the two ends of the BMU 122 can be fixed to the fourth brackets 27 at the two ends, for example, the edge portions of the two ends of the BMU 122 can be fixed to the corresponding fourth brackets 27 by bolts. In this way, the BMU 122 can be stably fixed to the outer wall of the box body 13 through the fourth bracket 27. As an optional solution, Figure 5 As shown, the fourth bracket 27 has a bent structure and may include a fourth fixing portion 271 and a fourth bent portion 272. The fourth fixing portion 271 may be fixed to the outer side of the side wall 133, and the edge of the BMU 122 may be fixed to the corresponding fourth fixing portion 271. The fourth bent portion 272 may clamp the edge of the BMU 122, so that the BMU 122 is clamped between the fourth bent portions 272 of the fourth bracket 27 located at both ends of the BMU 122, so that the BMU 122 can be more stably fixed to the outer wall of the box body 13.

[0108] In the embodiment of the present application, when the first printed circuit board 22 is fixed to the second bracket 26, the fixing position selected on the first printed circuit board 22 needs to be a position that does not affect the normal operation of the first printed circuit board 22; when the BMU 122 is fixed to the fourth bracket 27, the fixing position selected on the BMU 122 needs to be a position that does not affect the normal operation of the BMU 122.

[0109] In practical applications, the structures of the second bracket 26 and the fourth bracket 27 can be set according to the structures of the first printed circuit board 22 and the BMU 122 to achieve the purpose of matching the bracket with the first printed circuit board 22 and the BMU 122. This embodiment of the present application does not limit this.

[0110] right Figure 5 The description of other structures in the embodiment shown can be found in Figure 4 The description in the illustrated embodiment will not be repeated here.

[0111] In this embodiment of the present application, the second bracket secures the first printed circuit board, allowing it to be stably fixed to the inner wall of the box. Furthermore, the second bracket secures the first printed circuit board, eliminating the need for an insulating layer. In this embodiment of the present application, the fourth bracket secures the BMU, allowing it to be stably fixed to the outer wall of the box.

[0112] Figure 6A This is a schematic structural diagram of the fifth immersion liquid cooling system provided in an embodiment of the present application. Figure 6B A schematic diagram of the structure of a battery module provided in an embodiment of the present application is shown in FIG. Figure 6A and Figure 6B As shown, this embodiment is different from the above Figure 1 The difference between the illustrated embodiment is that the battery module is provided with an end plate 28 , the internal structure includes the end plate 28 of any one of the battery modules, and the second signal transceiver 14 is provided on the end plate 28 of any one of the battery modules.

[0113] like Figure 6B As shown, the battery module may include multiple battery cells 29 and end plates 28 located outside the multiple battery cells 29. As an alternative, the second signal transceiver 14 may be provided on the end plate 28 of any battery module near the first signal transceiver 11.

[0114] As an optional solution, in order to enable the first signal transceiver 11 and the second signal transceiver 14 to be arranged at corresponding positions inside and outside the box 13, the second signal transceiver 14 can be arranged on the end plate 28 of the battery module arranged at the position corresponding to the first signal transceiver 11. Figure 6AAs shown, the battery module corresponding to the first signal transceiver 11 is the battery module 3, and the second signal transceiver 14 can be arranged on the end plate 28 of the battery module 3 on the side close to the first signal transceiver 11. Since the battery module 3 is arranged in a corresponding position to the first signal transceiver 11, the second signal transceiver 14 is arranged on the end plate 28 of the battery module 3, so that the second signal transceiver 14 and the first signal transceiver 11 can be arranged at corresponding positions inside and outside the box 13. Among them, the second signal transceiver 14 is located on the side of the battery module close to the first signal transceiver 11, so that the second signal transceiver 14 can be arranged in a better corresponding position with the first signal transceiver 11, ensuring that the directions of signal transmission and reception of the first signal transceiver 11 and the second signal transceiver 14 are corresponding, so that the power of the transmitted signal in the direction of signal transmission and reception is greater and the sensitivity of the received signal is higher, thereby further improving the signal transmission effect and achieving better signal transmission effect. Of course, in actual applications, the second signal transceiver 14 can also be set on other battery modules. The end plates of other battery modules are not specifically drawn, and this embodiment of the application does not limit this.

[0115] As an alternative, the second signal transceiver 14 can be secured to the end plate 28 of the battery module using at least one fifth securing member. For example, the fifth securing member can be a bolt, which secures the second signal transceiver 14 to the end plate 28 of the battery module. As another alternative, the second signal transceiver 14 can be adhesively bonded to the end plate 28 of the battery module.

[0116] right Figure 6A and Figure 6B The description of other structures in the embodiment shown can be found in Figure 1 The description in the illustrated embodiment will not be repeated here.

[0117] In the embodiment of the present application, the second signal transceiver device is arranged on the end plate of any battery module, which will not occupy too much internal space of the box and does not require an insulating layer.

[0118] Figure 7 A structural diagram of the sixth immersion liquid cooling system provided in the embodiment of the present application is shown in FIG. Figure 7 As shown, this embodiment is different from the above Figure 4 The difference between the illustrated embodiment and the embodiment shown is that the battery modules are provided with end plates 28 , the internal structure includes the end plates 28 of any one of the battery modules, and the first printed circuit board 22 is provided on the end plates 28 of any one of the battery modules.

[0119] The battery module may include multiple battery cells and end plates located outside the multiple battery cells. As an optional solution, the first printed circuit board 22 may be provided on the end plate 28 of any battery module close to the first signal transceiver 11. The specific structure of the battery module can be found in Figure 6B shown.

[0120] As an optional solution, in order to enable the first signal transceiver 11 and the second signal transceiver 14 to be arranged at corresponding positions inside and outside the box 13, the first printed circuit board 22 can be arranged on the end plate 28 of the battery module arranged at the position corresponding to the first signal transceiver 11. Figure 7 As shown, the battery module corresponding to the first signal transceiver 11 is battery module 3. Therefore, the first printed circuit board 22 can be disposed on the end plate 28 of the battery module 3 on the side near the first signal transceiver 11. Since the battery module 3 is disposed in corresponding positions with the first signal transceiver 11, the first printed circuit board 22 is disposed on the end plate 28 of the battery module 3, while the second signal transceiver 14 is integrated on the first printed circuit board 22. This allows the second signal transceiver 14 and the first signal transceiver 11 to be disposed at corresponding positions inside and outside the housing 13. The second signal transceiver 14 is located on the side of the battery module near the first signal transceiver 11, allowing the second signal transceiver 14 to be disposed in a more corresponding position with the first signal transceiver 11. This ensures that the signal transmission directions of the first and second signal transceiver 11 and 14 are corresponding, resulting in a higher power of the transmitted signal and a higher sensitivity of the received signal in the direction of signal transmission and reception, thereby further improving the signal transmission effect and achieving better signal transmission effect. Of course, in actual applications, the first printed circuit board 22 integrated with the second signal transceiver 14 can also be set on other battery modules. The end plates of other battery modules are not specifically drawn, and the embodiment of the present application does not limit this.

[0121] This embodiment is different from the above Figure 4 The embodiment shown is different in that the second signal transceiver 14 and the signal processing module 15 are arranged on the same side of the first printed circuit board 22. Figure 7 As shown, the second signal transceiver device 14 and the signal processing module 15 are both arranged on a side of the first printed circuit board 22 close to the first signal transceiver device 11 .

[0122] In actual applications, as another optional solution, the second signal transceiver device 14 and the signal processing module 15 are arranged on different sides of the first printed circuit board 22. For example, the second signal transceiver device 14 is arranged on a side of the first printed circuit board 22 close to the first signal transceiver device 11, and the signal processing module 15 is arranged on a side of the first printed circuit board 22 away from the first signal transceiver device 11. This situation is not specifically shown in the figure.

[0123] This embodiment is different from the above Figure 4 The embodiment shown is different in that the signal processing device 121 and the first signal transceiver device 11 are arranged on the same side of the second printed circuit board 24. Figure 7 As shown, the signal processing device 121 and the first signal transceiver device 11 are both arranged on a side of the second printed circuit board 24 close to the second signal transceiver device 14 .

[0124] In actual applications, as another optional solution, the signal processing device 121 and the first signal transceiver device 11 are disposed on different sides of the second printed circuit board 24. For example, the first signal transceiver device 11 is disposed on a side of the second printed circuit board 24 close to the second signal transceiver device 14, and the signal processing device 121 is disposed on a side of the second printed circuit board 24 away from the second signal transceiver device 14.

[0125] right Figure 7 The description of other structures in the embodiment shown can be found in Figure 4 The description in the illustrated embodiment will not be repeated here.

[0126] In the embodiment of the present application, the first printed circuit board is arranged on the end plate of any battery module, which will not occupy too much internal space of the box and does not require an insulating layer.

[0127] In the embodiment of the present application, the structure of the immersion liquid cooling system is not limited to the above Figures 1 to 7 The structure in the embodiment shown. The structure inside the box 13 and the structure outside the box 13 can be set according to the product design requirements. For example, in an immersion liquid cooling system, the structure inside the box 13 adopts Figure 1 The internal structure shown in FIG. 1 and the external structure of the box body 13 are Figure 3 For example, in another immersion liquid cooling system, the structure inside the box 13 is adopted Figure 4 The internal structure shown in FIG. 1 and the external structure of the box body 13 are Figure 5 The external structure shown is not listed here one by one, and the embodiments of the present application do not limit this.

[0128] As an alternative, the above Figures 1 to 7In the immersion liquid cooling system shown, the first wireless communication signal and the second wireless communication signal can be low-frequency electromagnetic signals, the frequency of the low-frequency electromagnetic signal is 125KHz, the bandwidth is 50kHz, the shape of the first electromagnetic coil and the second electromagnetic coil is circular, the diameter of the circular coil is 120mm, the number of coil turns is 20, and the communication speed achieved is 3125 WORD / s.

[0129] As another alternative, the above Figures 1 to 7 In the immersion liquid cooling system shown, the first wireless communication signal and the second wireless communication signal can be low-frequency electromagnetic signals, the frequency of the low-frequency electromagnetic signal is 100KHz, the bandwidth is 20kHz, the shape of the first electromagnetic coil and the second electromagnetic coil is square, the length of the square coil is 200mm and the width is 100mm, the number of coil turns is 32, and the communication speed achieved is 1250 WORD / s.

[0130] In the embodiment of the present application, the box 13 may also be provided with an integrated busbar (Cells Contact System, CCS), an internal wiring harness, a connecting copper busbar and other structures. Figures 1 to 7 Not specifically drawn in the figure.

[0131] In an embodiment of the present application, an immersion liquid cooling system can be manufactured through a conventional process flow. For example, the conventional process flow may include cell stacking, busbar welding, module assembly, wiring harness assembly, liquid filling, testing and other processes; each component inside the box needs to be installed before adding coolant.

[0132] The embodiment of the present application provides an energy storage system, which may include at least one immersion liquid cooling system. The description of the immersion liquid cooling system can be found in Figures 1 to 7 The description in the illustrated embodiment will not be repeated here.

[0133] The embodiment of the present application provides an electrical device, which may include at least one immersion liquid cooling system. The description of the immersion liquid cooling system can be found in Figures 1 to 7 The description in the illustrated embodiment will not be repeated here.

[0134] In the embodiment of the present application, the electrical equipment may include photovoltaic power generation equipment, wind power generation equipment or charging piles and other equipment.

[0135] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An immersion liquid cooling system, characterized in that: include: A battery pack, a first signal transceiver device, and an electronic device, wherein the battery pack includes a housing, a second signal transceiver device, a signal processing module, and at least one battery module; the housing is provided with a receiving cavity for receiving a coolant; the second signal transceiver device, the signal processing module, and the at least one battery module are disposed within the receiving cavity; the second signal transceiver device is disposed on an inner wall of the housing or on an internal structure within the receiving cavity; the first signal transceiver device and the electronic device are located outside the housing; the first signal transceiver device and the second signal transceiver device are wirelessly connected; The signal processing module is used to convert the acquired first data of at least one battery module into a first wireless communication signal; the second signal transceiver is used to send the first wireless communication signal; the first signal transceiver is used to receive the first wireless communication signal and send the first wireless communication signal to the electronic device; or, The electronic device is used to convert the second data into a second wireless communication signal and send the second wireless communication signal to the first signal transceiver device; the first signal transceiver device is used to send the second wireless communication signal; the second signal transceiver device is used to receive the second wireless communication signal and send the second wireless communication signal to the signal processing module.

2. The immersion liquid cooling system according to claim 1, characterized in that: The first wireless communication signal and the second wireless communication signal are both low-frequency electromagnetic signals.

3. The immersion liquid cooling system according to claim 1, characterized in that: The first signal transceiver device and the second signal transceiver device are arranged at corresponding positions inside and outside the box.

4. The immersion liquid cooling system according to claim 1, characterized in that: A first insulating layer is provided between the second signal transceiver device and the inner wall.

5. The immersion liquid cooling system according to claim 1, characterized in that: The internal structure includes a first bracket, which is arranged on the inner wall of the box body, and the second signal transceiver device is fixed on the first bracket.

6. The immersion liquid cooling system according to claim 1, characterized in that: The internal structure includes a first printed circuit board, which is disposed in the accommodating cavity; The second signal transceiver device and the signal processing module are integrated on the first printed circuit board.

7. The immersion liquid cooling system according to claim 6, characterized in that: The first printed circuit board is provided with a plug hole, and the second signal transceiver device and the signal processing module are arranged on the first printed circuit board by inserting pins into the corresponding plug holes; or, The second signal transceiver device and the signal processing module are soldered on the first printed circuit board by patch method.

8. The immersion liquid cooling system according to claim 6, characterized in that: The first printed circuit board is fixed on the inner wall of the box, and a second insulating layer is provided between the first printed circuit board and the inner wall; or The internal structure further includes a second bracket, which is arranged on the inner wall of the box body, and the first printed circuit board is fixed on the second bracket.

9. The immersion liquid cooling system according to claim 1, characterized in that: The battery module is provided with an end plate, the internal structure includes the end plate of any one of the battery modules, and the second signal transceiver is provided on the end plate of any one of the battery modules.

10. The immersion liquid cooling system according to claim 6, characterized in that: The battery module is provided with an end plate, the internal structure includes the end plate of any one of the battery modules, and the first printed circuit board is provided on the end plate of any one of the battery modules.

11. The immersion liquid cooling system according to claim 1, characterized in that: The first signal transceiver device is arranged on the outer wall of the box body, and a third insulating layer is arranged between the first signal transceiver device and the outer wall.

12. The immersion liquid cooling system according to claim 11, characterized in that: The second signal transceiver device is arranged on the inner side of the side wall of the box body, and the first signal transceiver device is arranged on the outer side of the side wall.

13. The immersion liquid cooling system according to claim 1, characterized in that: A third bracket is provided on the outer wall of the box, and the first signal transceiver is fixed on the third bracket.

14. The immersion liquid cooling system according to claim 1, characterized in that: The electronic device includes a signal processing device and a battery management unit; The battery management unit is configured to send the second data to the signal processing device; The signal processing device is used to convert the second data into the second wireless communication signal, and send the second wireless communication signal to the first signal transceiver.

15. The immersion liquid cooling system according to claim 14, characterized in that: The battery management unit includes a second printed circuit board, and the signal processing device and the first signal transceiver device are integrated on the second printed circuit board.

16. The immersion liquid cooling system according to claim 15, characterized in that: The second printed circuit board is provided with a plug hole, and the signal processing device and the first signal transceiver device are arranged on the second printed circuit board by inserting pins into the corresponding plug holes; or, The signal processing device and the first signal transceiver are soldered on the second printed circuit board by patch method.

17. The immersion liquid cooling system according to claim 15, characterized in that: The battery management unit is fixed on the outer wall of the box, and a fourth insulating layer is provided between the battery management unit and the outer wall; or, A fourth bracket is provided on the outer wall of the box body, and the battery management unit is fixed on the fourth bracket.

18. The immersion liquid cooling system according to any one of claims 1 to 17, characterized in that: The first signal transceiver is a first electromagnetic coil, and the second signal transceiver is a second electromagnetic coil.

19. The immersion liquid cooling system according to any one of claims 1 to 17, characterized in that: The battery module includes at least one battery cell, and the first data includes battery data of each of the battery cells.

20. The immersion liquid cooling system according to any one of claims 1 to 17, characterized in that: The second data includes control instruction data.

21. An energy storage system, characterized in that: include: At least one immersion liquid cooling system according to any one of claims 1 to 20.

22. An electrical device, characterized in that: include: At least one immersion liquid cooling system according to any one of claims 1 to 20.

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