Battery device and electric equipment

Abstract

The embodiment of the invention provides a battery device and electric equipment, and belongs to the technical field of batteries. The battery device comprises: a housing provided with a flow channel; the power distribution box comprises a box body and a power distribution assembly, the power distribution assembly is arranged in the box body, and the box body is communicated with the flow channel to form a closed loop; the box body is used for being filled with a cooling medium so that the cooling medium can circularly flow through the box body and the flow channel. Compared with natural heat dissipation of the power distribution assembly by air, the cooling medium is utilized to immerse the power distribution assembly, and the cooling medium is enabled to dissipate heat along the flow channel, so that the heat dissipation efficiency of the power distribution assembly is higher, and the power distribution assembly is effectively prevented from being overheated.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and electrical equipment. Background Art

[0002] When a battery device is supplying power, its temperature will gradually increase.

[0003] In the prior art, a battery device includes a housing, battery modules housed within the housing, and a distribution box. The distribution box includes a housing and a distribution assembly housed within the housing. The battery modules and the distribution assembly are electrically connected. When the battery device is powered, the temperature of the distribution assembly rises significantly. To address this, heat dissipation holes are typically provided in the housing to facilitate natural airflow and dissipation of heat from the distribution assembly.

[0004] However, the existing distribution box has poor heat dissipation efficiency, which can easily cause the distribution components to overheat. Summary of the Invention

[0005] The embodiments of the present application provide a battery device and an electrical device, which are used to improve the heat dissipation efficiency of a distribution box of the battery device.

[0006] In a first aspect, an embodiment of the present application provides a battery device, comprising:

[0007] a shell, wherein a flow channel is provided on the shell;

[0008] The distribution box includes a box body and a distribution assembly. The distribution assembly is arranged in the box body, and the box body is connected to the flow channel to form a closed loop;

[0009] The box is used to be filled with a cooling medium so that the cooling medium circulates through the box and the flow passage.

[0010] In a possible implementation, the battery device provided in the embodiment of the present application further includes a driving component, which is connected between the housing and the flow channel to drive the cooling medium to circulate between the housing and the flow channel.

[0011] In one possible implementation, the battery device provided in the embodiment of the present application, the driving component includes:

[0012] Connecting pipe, connecting the box and the flow channel;

[0013] The driving member is connected to the connecting pipe to drive the cooling medium in the connecting pipe to flow.

[0014] In one possible implementation, the battery device provided in the embodiment of the present application further includes a regulating component connected to the housing and the driving component;

[0015] The regulating component is configured to adjust the power of the driving component according to the temperature in the box.

[0016] In one possible implementation, the battery device provided in the embodiment of the present application, the regulating component includes:

[0017] A detection component is arranged in the box to detect the temperature inside the box;

[0018] A controller electrically connected to the detection element and the drive assembly;

[0019] The controller is configured to control the driving component to increase power when the temperature inside the detection box of the detection element increases, and to control the driving component to reduce power when the temperature inside the detection box of the detection element decreases.

[0020] In one possible implementation, the battery device provided in the embodiment of the present application includes a housing comprising:

[0021] The box shell is used to accommodate the power distribution components and the cooling medium, and an opening is set on one side of the box shell;

[0022] The box cover is sealed with the box shell to close the opening.

[0023] In a possible implementation, the battery device provided in the embodiment of the present application has at least two first oil nozzles provided on the housing, and the connecting pipes are connected to the interior of the housing through the first oil nozzles respectively.

[0024] In a possible implementation, in the battery device provided in the embodiment of the present application, each first fuel nozzle is located at least on two opposite sides of the housing.

[0025] In a possible implementation, in the battery device provided in the embodiment of the present application, the first fuel nozzles are staggered.

[0026] In one possible implementation, the battery device provided in the embodiment of the present application, the housing includes:

[0027] A bottom plate, wherein a box body is arranged on the bottom plate;

[0028] The wall panels are arranged in plurality, each wall panel is sequentially arranged around the peripheral side of the bottom plate, and the flow channel is arranged on the wall panel.

[0029] In a possible implementation, the battery device provided in the embodiment of the present application has cavities in the wall panels, and the cavities of the wall panels are connected to form flow channels.

[0030] In a possible implementation, in the battery device provided in the embodiment of the present application, a second oil nozzle communicating with the cavity is provided on the wall panel, and the cavity is communicated with the box body through the second oil nozzle.

[0031] In one possible implementation, the battery device provided in the embodiment of the present application, the power distribution assembly includes:

[0032] A positive electrode circuit group, which has a circuit breaker and is used to electrically connect the positive electrode of the battery module in the housing and the electrical equipment;

[0033] Pre-charge circuit group, the pre-charge circuit group is connected in parallel with the positive circuit group;

[0034] Negative electrode circuit group, the negative electrode circuit group is used to electrically connect the negative electrode of the battery module and the electrical equipment.

[0035] In a possible implementation, in the battery device provided in the embodiment of the present application, the cooling medium is insulating cooling oil.

[0036] In a possible implementation, in the battery device provided in the embodiment of the present application, the insulating cooling oil includes at least one of paraffin-based oil and cyclopentane-based oil.

[0037] In a second aspect, an embodiment of the present application provides an electrical device, comprising a device body and any of the above-mentioned battery devices arranged on the device body.

[0038] The battery device and electrical equipment provided in the embodiments of the present application include a housing and a distribution box disposed in the housing. The distribution box has a housing, and the housing is connected to a flow channel on the housing. A cooling medium can be filled in the housing so that the cooling medium immerses the distribution components in the housing, wherein the cooling medium can circulate between the housing and the flow channel. In this way, when the battery device is powered, the temperature of the distribution components rises and transfers heat to the cooling medium. The cooling medium flows from the housing to the flow channel, dissipates heat in the flow channel, and circulates back and forth to achieve heat dissipation of the distribution components. Compared to the natural heat dissipation of the distribution components by air, the distribution components are immersed in the cooling medium and the cooling medium is allowed to dissipate heat along the flow channel, so that the heat dissipation efficiency of the distribution components is higher, and the overheating of the distribution components is effectively prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0040] Figure 1 A schematic diagram of the structure of a battery device provided in an embodiment of the present application;

[0041] Figure 2 for Figure 1 Middle AA section view;

[0042] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0043] Figure 4 for Figure 1 Schematic diagram of the internal structure of the distribution box;

[0044] Figure 5 for Figure 4 Schematic diagram of the structure from another perspective.

[0045] Description of reference numerals:

[0046] 100 - housing; 110 - flow channel; 120 - bottom plate; 130 - wall plate; 131 - second nozzle; 140 - battery module;

[0047] 200-distribution box;

[0048] 210-box body; 211-box shell; 2111-first oil nozzle; 212-box cover; 2121-sealing ring;

[0049] 220-power distribution assembly;

[0050] 221-positive pole circuit group; 2211-positive pole lead-in copper busbar; 2212-positive pole relay; 2213-circuit breaker; 2214-positive pole lead-out copper busbar;

[0051] 222- pre-charge circuit group; 2221- pre-charge resistor; 2222- pre-charge relay;

[0052] 223-Negative electrode circuit group; 2231-Negative electrode lead-in copper busbar; 2232-Negative electrode relay; 2233-High voltage monitoring module; 2234-Negative electrode lead-out copper busbar;

[0053] 300-driving assembly; 310-connecting pipe; 320-driving member;

[0054] 400-regulating component; 410-detecting component; 420-controller.

[0055] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0056] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The following embodiments and features in the embodiments can be combined with each other unless there is a conflict.

[0057] The battery assembly includes a housing, a battery module housed within it, and a distribution box. The distribution box includes a housing and a distribution assembly housed within the housing. The battery module and the distribution assembly are electrically connected. When the battery assembly is powered, the temperature of components such as relays in the distribution assembly rises significantly. To address this, heat dissipation holes are typically provided in the housing. The holes are positioned to correspond with the locations of other components such as relays that experience significant temperature increases. This allows natural air flow to facilitate the dissipation of heat from the distribution assembly through the holes.

[0058] However, the existing distribution box has poor heat dissipation efficiency through air flow, and the heat of components such as relays is dissipated slowly, which can easily cause the distribution components to overheat and shorten the service life of the distribution box.

[0059] In order to overcome the defects in the prior art, the embodiments of the present application provide a battery device and an electrical device, wherein the battery device includes a shell and a distribution box disposed in the shell, the distribution box having a box body, the box body being connected to the flow channel on the shell body, and a cooling medium can be filled in the box body so that the cooling medium immerses the distribution components in the box body, wherein the cooling medium can circulate between the box body and the flow channel. In this way, when the battery device is powered, the temperature of the distribution components rises and transfers heat to the cooling medium, which flows from the box body to the flow channel, dissipates heat in the flow channel, and circulates back and forth to achieve heat dissipation of the distribution components. Compared to the natural heat dissipation of the distribution components by air, the distribution components are immersed in the cooling medium and the cooling medium is allowed to dissipate heat along the flow channel, so that the heat dissipation efficiency of the distribution components is higher, and the overheating of the distribution components is effectively prevented.

[0060] The content of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the content of the present invention more clearly and in detail.

[0061] Reference Figures 1 to 3 As shown, an embodiment of the present application provides a battery device, including:

[0062] The housing 100 is provided with a flow channel 110;

[0063] The distribution box 200 includes a box body 210 and a distribution assembly 220. The distribution assembly 220 is disposed in the box body 210. The box body 210 is connected to the flow channel 110 to form a closed loop.

[0064] The box body 210 is used to be filled with a cooling medium so that the cooling medium circulates through the box body 210 and the flow channel 110 .

[0065] It can be understood that there is a accommodating space in the shell 100 of the battery device, through which the distribution box 200 and the battery module 140 can be installed, wherein a partition beam is provided in the shell 100, and the partition beam divides the accommodating space into two parts, one part of which can be installed with the battery module 140, and the other part of which can be installed with the distribution box 200, and the battery module 140 and the distribution box 200 are electrically connected via the partition beam.

[0066] The housing 100 is provided with a flow channel 110. Specifically, the flow channel 110 can be located on the inner surface of the housing 100 facing the storage space, or on the outer surface of the housing 100 facing away from the storage space, or between the inner and outer surfaces of the housing 100. This application is not limited to this. To improve the heat dissipation capability of the flow channel 110, the flow channel 110 is typically provided on the outer surface of the housing 100, or between the inner and outer surfaces of the housing 100.

[0067] The distribution box 200 includes a box body 210 and a distribution component 220. The box body 210 has a sealed space. The distribution component 220 is arranged in the sealed space, and the sealed space is respectively connected to the inlet and outlet of the flow channel 110, so that the sealed space in the box body 210 and the flow channel 110 form a closed loop structure.

[0068] The sealed space of the box body 210 is filled with a cooling medium. The cooling medium itself is insulated and can immerse the power distribution assembly 220 in the sealed space. In addition, the cooling medium can circulate in a closed loop structure formed by the sealed space of the box body 210 and the flow channel 110.

[0069] Therefore, the battery device provided in the embodiment of the present application includes a housing 100 and a distribution box 200 disposed within the housing 100. The distribution box 200 has a housing 210, which is connected to the flow channel 110 on the housing 100. A cooling medium can be filled within the housing 210, so that the cooling medium immerses the distribution assembly 220 within the housing 210. The cooling medium can circulate between the housing 210 and the flow channel 110. In this way, when the battery device is powered, the temperature of the distribution assembly 220 rises and transfers heat to the cooling medium. The cooling medium flows from the housing 210 to the flow channel 110, dissipating heat within the flow channel 110. This reciprocating cycle achieves heat dissipation from the distribution assembly 220. Compared to the natural heat dissipation of the distribution assembly 220 by air, immersing the distribution assembly 220 in the cooling medium and dissipating the heat along the flow channel 110 improves the heat dissipation efficiency of the distribution assembly 220, effectively preventing the distribution assembly 220 from overheating.

[0070] Furthermore, as the heat dissipation efficiency in the distribution box 200 is improved, the specifications and number of components of the distribution assembly 220 can be further reduced, thereby reducing the cost of the distribution box 200 and reducing the risk of overheating of components.

[0071] In some embodiments, reference Figures 1 to 3 As shown, the battery device provided in the embodiment of the present application further includes a driving component 300 , which is connected between the box body 210 and the flow channel 110 to drive the cooling medium to circulate between the box body 210 and the flow channel 110 .

[0072] It can be understood that by setting up a drive component 300 to connect the box body 210 and the flow channel 110, the cooling medium can be effectively driven to circulate between the two, which helps to achieve efficient cooling of the distribution component 220 in the distribution box 200, avoid the occurrence of overheating of the distribution component 220, and improve the overall performance and safety of the battery.

[0073] The circulating cooling medium can promptly remove the heat generated by the power distribution assembly 220 during the operation of the battery device, maintain the power distribution assembly 220 operating within a suitable temperature range, and extend the service life of the power distribution assembly 220.

[0074] Among them, reference Figures 1 to 3 As shown, the drive assembly 300 includes:

[0075] A connecting pipe 310 , connecting the box body 210 and the flow channel 110 ;

[0076] The driving member 320 is connected to the connecting pipe 310 to drive the cooling medium in the connecting pipe 310 to flow.

[0077] A plurality of connecting pipes 310 are provided to connect the two ends of the box body 210 and the flow channel 110 respectively, thereby forming a complete cooling medium flow path, so that the cooling medium can flow smoothly between the box body 210 and the flow channel 110 .

[0078] The driving member 320 is connected to the connecting pipe 310. For example, the driving member 320 can be an oil pump, connected between the connecting pipe 310 and the box body 210, or connected between the connecting pipe 310 and the flow channel 110, or connected between two adjacent sections of the connecting pipe 310, and the two sections of the connecting pipe 310 are respectively connected to the flow channel 110 and the box body 210. This application does not impose any restrictions on this.

[0079] In this way, through the driving member 320 , the cooling medium can continuously remove the heat generated by the power distribution assembly 220 in the entire closed loop structure formed by the box body 210 , the connecting pipe 310 and the flow channel 110 , and dissipate the heat at the flow channel 110 .

[0080] And in some embodiments, reference Figure 1 and Figure 4 As shown, the battery device provided in the embodiment of the present application further includes a regulating component 400, which is connected to the box 210 and the driving component 300;

[0081] The regulating component 400 is configured to adjust the power of the driving component 300 according to the temperature in the box 210 .

[0082] It can be understood that by providing the regulating component 400 to connect the box 210 and the driving component 300 , the power of the driving component 300 can be dynamically adjusted according to the actual temperature conditions in the box 210 .

[0083] When the temperature inside the box 210 rises, the control component 400 will correspondingly increase the power of the driving component 300, so that the cooling medium can take away heat faster during the circulation process, speeding up the heat dissipation speed, so as to quickly reduce the temperature of the distribution component 220 in the box 210 to an appropriate range, avoid the distribution component 220 from being too hot, and ensure the service life of the distribution component 220.

[0084] When the temperature inside the box 210 drops to an appropriate level, the regulating component 400 can reduce the power of the driving component 300, reduce unnecessary energy consumption, and achieve energy saving and consumption reduction. This makes the temperature control of the battery device more accurate, efficient and flexible, and can better adapt to different working environments and usage conditions, thereby improving the performance and reliability of the entire battery device.

[0085] Among them, reference Figure 1 and Figure 4 As shown, the control component 400 includes:

[0086] A detection member 410 is disposed in the box 210 to detect the temperature in the box 210;

[0087] A controller 420 , the controller 420 being electrically connected to the detection element 410 and the driving assembly 300 ;

[0088] The controller 420 is configured to control the driving assembly 300 to increase power when the detecting element 410 detects that the temperature inside the box 210 increases, and to control the driving assembly 300 to reduce power when the detecting element 410 detects that the temperature inside the box 210 decreases.

[0089] The detection component 410 arranged in the box body 210 can monitor the temperature changes in the box body 210 in real time and accurately, so that the controller 420 electrically connects the detection component 410 and the drive component 300. When the detection component 410 detects that the temperature in the box body 210 increases, the controller 420 can promptly control the drive component 300 to increase the power and speed up the circulation speed of the cooling medium. When the detection component 410 detects that the temperature in the box body 210 decreases, the controller 420 will control the drive component 300 to reduce the power to avoid excessive cooling and unnecessary energy waste, thereby realizing accurate and intelligent control of the temperature in the battery device box body 210.

[0090] For example, the controller 420 can be separately provided in the battery device and specifically used to control the operating power of the driver 320. Alternatively, it can be integrated into the controller 420 for battery management within the power distribution assembly 220, and this application is not limited thereto. Furthermore, when the temperature within the housing 210 is at room temperature, the driver 320 can be activated by the controller 420. As the temperature of the housing 210 rises, the power of the driver 320 gradually increases. When the local temperature within the housing 210 reaches 120°C, the power of the driver 320 can be increased to 100%.

[0091] Furthermore, in some embodiments, reference Figure 2 、 Figure 4 and Figure 5 As shown, the box 210 includes:

[0092] The box shell 211 is used to accommodate the power distribution assembly 220 and the cooling medium. An opening is provided on one side of the box shell 211;

[0093] The box cover 212 is sealed with the box shell 211 to close the opening.

[0094] It can be understood that the box shell 211 can effectively accommodate the distribution component 220 and the cooling medium, provide a safe and stable working environment for them, prevent external impurities, dust, etc. from affecting the distribution component 220, and also facilitate maintenance and inspection of the distribution component 220.

[0095] The sealed connection between the box cover 212 and the box shell 211 prevents leakage of the cooling medium, ensuring its circulation and heat dissipation, improving the stability and reliability of the power distribution assembly 220, and extending the service life of the equipment. Furthermore, the sealed connection prevents external moisture and humidity from entering the box, preventing corrosion and other damage to the power distribution assembly 220.

[0096] In specific implementation, a sealing ring groove can be set around the opening of the box shell 211, and a sealing ring 2121 can be installed in the sealing ring groove so that when the box cover 212 and the box shell 211 are bolted together, the sealing ring 2121 can be used to ensure the sealing between the box shell 211 and the box cover 212.

[0097] In some embodiments, reference Figure 2 、 Figure 4 and Figure 5 As shown, at least two first oil nozzles 2111 are provided on the tank shell 211 , and the connecting pipe 310 is communicated with the interior of the tank shell 211 through the first oil nozzles 2111 .

[0098] It can be understood that at least two first oil nozzles 2111 are provided on the box shell 211 and are respectively connected to the connecting pipe 310, so that the connection between the connecting pipe 310 and the box shell 211 can be more convenient and reliable.

[0099] The first oil nozzles 2111 are at least located on two opposite sides of the box shell 211 .

[0100] It is easy to understand that the first oil nozzle 2111 is arranged to be at least relatively distributed on both sides of the box shell 211, so that the cooling medium enters the box shell 211 from the first oil nozzle 2111 on one side, flows fully in the box shell 211, and then flows out from the first oil nozzle 2111 on the other side, so that the flow path of the cooling medium in the box shell 211 is longer and the heat exchange is more sufficient.

[0101] Furthermore, the first oil nozzles 2111 are staggered.

[0102] It can be understood that the first oil nozzles 2111 are arranged in a staggered distribution, specifically along the height direction, width direction or length direction of the box shell 211, so that when the first oil nozzles 2111 respectively discharge or discharge the cooling medium, it is easier for the cooling medium to flow fully in the box shell 211, further improving the heat exchange efficiency between the cooling medium and the distribution component 220.

[0103] And, in some embodiments, reference Figures 1 to 3 As shown, the housing 100 includes:

[0104] A bottom plate 120, on which a box body 210 is disposed;

[0105] The wall panels 130 are provided in plurality, and each wall panel 130 is sequentially arranged around the circumference of the bottom plate 120 , and the flow channel 110 is provided on the wall panels 130 .

[0106] The housing 210 and drive element 320 are bolted to the base plate 120, and the battery module 140 is mounted thereon. This provides a foundational support platform for the distribution box 200 and battery module 140, enabling orderly installation and arrangement of the various components, ensuring the integrity and stability of the system. Multiple wall panels 130 are arranged around the base plate 120, with the flow channels 110 disposed on the wall panels 130. This allows the cooling medium to flow within the flow channels 110 and along the wall panels 130, resulting in a longer heat dissipation path, higher heat dissipation efficiency, and a smaller footprint.

[0107] Among them, reference Figures 1 to 3 As shown, the flow channel 110 is disposed at least around two adjacent sides of the bottom plate 120 .

[0108] It can be understood that the flow channel 110 is arranged around the two sides adjacent to the bottom plate 120, that is, the flow channel 110 is arranged on at least two adjacent wall panels 130. Compared with only arranging the flow channel 110 on one side of the bottom plate 120, the length of the flow channel 110 can be effectively extended, so that the cooling medium can dissipate heat more efficiently, thereby improving the heat dissipation efficiency of the battery device.

[0109] In a specific implementation, a cavity is defined in the wall plate 130 , and the cavities of the wall plates 130 are connected to form the flow channel 110 .

[0110] The flow channel 110 is formed within the cavity of the wall panel 130, simplifying its structure, saving additional processing costs, and making the housing 100 simple and compact. The structure of the flow channel 110 allows fluid to flow smoothly within the cavity within the wall panel 130, eliminating the complexity and potential leakage of external piping connections, and improving the system's sealing and stability. Furthermore, the interconnected cavities of multiple wall panels 130 increase the number of fluid paths and flow rates, enhancing the cooling effect, better meeting the system's fluid flow requirements, and improving system performance and reliability.

[0111] It should be noted here that if Figure 3 As shown, three layers of cavities are set in the wall plate 130 along the height direction of the shell 100. In specific implementation, only one or two layers of cavities can be used as the flow channel 110 while ensuring the heat dissipation effect of the flow channel 110, and the remaining cavities are still retained for exhaust of the battery device.

[0112] And, refer to Figure 3 As shown, a second oil nozzle 131 communicating with the cavity is provided on the wall plate 130 , and the cavity is communicated with the box body 210 through the second oil nozzle 131 .

[0113] It can be understood that the second oil nozzle 131 is fixedly connected to the wall panel 130 by arc welding, so that the wall panel 130 is connected to the connecting pipe 310 through the second oil nozzle 131, ensuring the stability of the connection between the connecting pipe 310 and the wall panel 130, and ensuring the sealing between the second oil nozzle 131 and the wall panel 130.

[0114] In a specific implementation, the second oil nozzle 131 adjacent to the driving member 320 may be used to inject the cooling medium into the flow channel 110 , and the second oil nozzle 131 away from the driving member 320 may be used to discharge the cooling medium from the flow channel 110 .

[0115] In some embodiments, reference is made to Figure 4 As shown, the power distribution assembly 220 includes:

[0116] A positive electrode circuit assembly 221 having a circuit breaker 2213 is provided. The positive electrode circuit assembly 221 is used to electrically connect the positive electrode of the battery module 140 in the housing 100 to the electrical equipment.

[0117] A pre-charge circuit group 222, which is connected in parallel to the positive circuit group 221;

[0118] The negative electrode circuit assembly 223 is used to electrically connect the negative electrode of the battery module 140 and the electrical equipment.

[0119] Among them, the positive circuit group 221 is connected to the positive relay 2212 through the positive lead-in copper busbar 2211, the positive relay 2212 is connected to the circuit breaker 2213 through the copper busbar, and the circuit breaker 2213 is connected to the positive lead-out copper busbar 2214.

[0120] The negative electrode circuit group 223 is connected to the negative electrode relay 2232 through the negative electrode copper busbar 2231 , the negative electrode relay 2232 is connected to the high voltage monitoring module 2233 through the copper busbar, and the high voltage monitoring module 2233 is connected to the negative electrode copper busbar 2234 .

[0121] In the pre-charging circuit group 222, the pre-charging resistor 2221 is connected to the pre-charging relay 2222 through a wiring harness. The pre-charging resistor 2221 and the pre-charging relay 2222 are connected in parallel to the positive pole circuit through a wiring harness. The parallel point of the pre-charging resistor 2221 is the positive pole lead-in copper bus 2211, and the parallel point of the pre-charging relay 2222 is the positive pole lead-out copper bus 2214.

[0122] In specific implementations, the positive electrode of the battery module 140 is connected to the positive electrode lead-in copper bar 2211, and the negative electrode of the battery module 140 is connected to the negative electrode lead-in copper bar 2231. Both the positive electrode lead-in copper bar 2211 and the negative electrode lead-in copper bar 2231 are connected to the high-voltage connector. During the operation of the power distribution assembly 220, the temperature of the circuit breaker 2213 rises most significantly. Therefore, the detection member 410 can be correspondingly arranged at the circuit breaker 2213 to detect the temperature of the circuit breaker 2213. It is electrically connected to the controller 420 in the box 210 via a wiring harness.

[0123] Typically, the box shell 211, the positive electrode lead-in copper busbar 2211, the positive electrode lead-out copper busbar 2214, the negative electrode lead-in copper busbar 2231, and the negative electrode lead-out copper busbar 2234 can be fixedly arranged on the bottom plate 120. In some embodiments, when a liquid cooling plate for dissipating heat from the battery module 140 is provided on the top of the battery device, the box shell 211, the positive electrode lead-in copper busbar 2211, the positive electrode lead-out copper busbar 2214, the negative electrode lead-in copper busbar 2231, and the negative electrode lead-out copper busbar 2234 can also be fixedly arranged on the liquid cooling plate to further improve its heat dissipation efficiency.

[0124] In some embodiments, the cooling medium is insulating cooling oil.

[0125] The insulating cooling oil may be transformer oil, which has a dielectric constant of 2.5, much higher than the dielectric constant of air of 1.0, and has good insulation performance. It can isolate oxygen and slow down the rate of aging of the distribution assembly 220 due to oxygen corrosion.

[0126] In addition, the insulating cooling oil has a better arc extinguishing effect. When the driving part 320 is running, the insulating cooling oil can flow in the box 210. When some components of the distribution component 220 fail and arcing occurs, the flowing insulating cooling oil can impact the arc to lengthen the arc and reduce the arc temperature to achieve the arc extinguishing effect.

[0127] Furthermore, the insulating cooling oil includes at least one of paraffin-based oil and naphthenic oil. This configuration not only ensures the insulating performance of the insulating cooling oil, but also improves its thermal conductivity, thereby ensuring the heat dissipation effect of the distribution assembly 220.

[0128] An embodiment of the present application further provides an electrical device, comprising a device body and a battery device according to any of the above embodiments disposed on the device body.

[0129] The battery device has been described in detail in the above embodiments and will not be described again here.

[0130] The electrical device provided in an embodiment of the present application comprises a battery device, which includes a housing 100 and a distribution box 200 disposed within the housing 100. The distribution box 200 has a housing 210 that is in communication with a flow channel 110 on the housing 100. A cooling medium can be filled within the housing 210, allowing the cooling medium to submerge the distribution assembly 220 within the housing 210. The cooling medium can circulate between the housing 210 and the flow channel 110. Thus, when the battery device is powered, the temperature of the distribution assembly 220 rises and transfers heat to the cooling medium. The cooling medium flows from the housing 210 to the flow channel 110, dissipating heat within the flow channel 110. This reciprocating cycle achieves heat dissipation from the distribution assembly 220. Compared to natural heat dissipation from the distribution assembly 220 by air, submerging the distribution assembly 220 with the cooling medium and dissipating heat along the flow channel 110 improves heat dissipation efficiency for the distribution assembly 220, effectively preventing overheating of the distribution assembly 220.

[0131] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0132] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0133] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0134] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90° or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery device, characterized in that: include: A housing (100), wherein a flow channel (110) is provided on the housing (100); A distribution box (200), the distribution box (200) comprising a box body (210) and a distribution assembly (220), the distribution assembly (220) being disposed in the box body (210), the box body (210) being in communication with the flow channel (110) to form a closed loop; The box (210) is used to be filled with a cooling medium so that the cooling medium circulates through the box (210) and the flow channel (110).

2. The battery device according to claim 1, wherein: The invention also includes a driving component (300), wherein the driving component (300) is connected between the box (210) and the flow channel (110) to drive the cooling medium to circulate between the box (210) and the flow channel (110).

3. The battery device according to claim 2, characterized in that The driving assembly (300) comprises: a connecting pipe (310), the connecting pipe (310) connecting the box (210) and the flow channel (110); A driving member (320), the driving member (320) being connected to the connecting pipe (310) to drive the cooling medium in the connecting pipe (310) to flow.

4. The battery device according to claim 2, wherein: It also includes a regulating component (400), wherein the regulating component (400) is connected to the box (210) and the driving component (300); The regulating component (400) is configured to adjust the power of the driving component (300) according to the temperature in the box (210).

5. The battery device according to claim 4, characterized in that The control component (400) includes: a detection member (410), the detection member (410) being disposed in the box (210) to detect the temperature in the box (210); a controller (420), the controller (420) being electrically connected to the detection element (410) and the drive assembly (300); The controller (420) is configured to control the drive assembly (300) to increase power when the detection member (410) detects that the temperature inside the box (210) increases, and to control the drive assembly (300) to reduce power when the detection member (410) detects that the temperature inside the box (210) decreases.

6. The battery device according to claim 3, characterized in that The box (210) includes: A box shell (211), the box shell (211) is used to accommodate the power distribution component (220) and the cooling medium, and an opening is provided on one side of the box shell (211); A box cover (212) is sealed to the box shell (211) to close the opening.

7. The battery device according to claim 6, characterized in that At least two first oil nozzles (2111) are provided on the box shell (211), and the connecting pipe (310) is communicated with the interior of the box shell (211) through the first oil nozzles (2111).

8. The battery device according to claim 7, characterized in that Each of the first oil nozzles (2111) is located at least on two opposite sides of the box shell (211).

9. The battery device according to claim 8, characterized in that The first oil nozzles (2111) are arranged in a staggered manner.

10. The battery device according to any one of claims 1 to 9, characterized in that: The housing (100) comprises: a bottom plate (120), the box body (210) being arranged on the bottom plate (120); A wall plate (130), wherein a plurality of the wall plates (130) are provided, and each of the wall plates (130) is sequentially arranged around the circumference of the bottom plate (120), and the flow channel (110) is provided on the wall plate (130).

11. The battery device according to claim 10, characterized in that The wall plate (130) has a cavity therein, and the cavities of the wall plates (130) are connected to form the flow channel (110).

12. The battery device according to claim 11, wherein: A second oil nozzle (131) communicating with the cavity is provided on the wall plate (130), and the cavity is communicated with the box (210) via the second oil nozzle (131).

13. The battery device according to any one of claims 1 to 9, characterized in that: The power distribution assembly (220) includes: A positive electrode circuit group (221), the positive electrode circuit group (221) having a circuit breaker (2213), the positive electrode circuit group (221) being used to electrically connect the positive electrode of the battery module (140) in the housing (100) and an electrical device; a pre-filling circuit group (222), the pre-filling circuit group (222) being connected in parallel to the positive electrode circuit group (221); A negative electrode circuit group (223) is used to electrically connect the negative electrode of the battery module (140) and an electrical device.

14. The battery device according to any one of claims 1 to 9, characterized in that: The cooling medium is insulating cooling oil.

15. The battery device according to claim 14, characterized in that The insulating cooling oil includes at least one of paraffin-based oil and naphthenic oil.

16. An electrical device, characterized in that: The device comprises a device body and a battery device according to any one of claims 1 to 15 arranged on the device body.

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