Arc extinguishing device, motor controller, battery pack and vehicle

Abstract

The invention relates to an arc extinguishing device, a motor controller, a battery pack and a vehicle, and the arc extinguishing device comprises a first preset space which is used for storing an arc extinguishing medium; wherein the first preset space is configured to be an in-shell space of the motor controller, and the first preset space is configured to be at least in a closed state. According to the invention, the safety of the motor controller and the vehicle is improved by arranging the first preset space in which the arc extinguishing medium is stored.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an arc extinguishing device, a motor controller, a battery pack and a vehicle. Background Art

[0002] The energy density of the power module inside the existing electric vehicle motor controller is relatively high. Although most of them are equipped with corresponding heat dissipation measures, other problems during vehicle driving, such as short circuits, collisions and other accidents, the IGBT (Insulated Gate Bipolar Transistor) module has the risk of short circuit arcing and even fire. At present, there is no effective arc (fire) extinguishing measure inside the motor controller, and most of them rely on flame retardant materials attached to the box to suppress the spread of flames. Although there are active cutting devices that cut off the conductive circuit, there is no effective response measure for the inside of the box where an open flame has appeared. Therefore, there is an urgent need for an arc (fire) extinguishing device for the motor controller that is actively or passively triggered. Summary of the invention

[0003] The embodiments of the present application provide an arc extinguishing device, a motor controller, a battery pack and a vehicle, which improve the safety of the motor controller and the vehicle, so as to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned object, according to a first aspect of the present application, an arc extinguishing device is provided, comprising: a first preset space for storing an arc extinguishing medium;

[0005] Wherein, the first preset space is configured as the space inside the shell of the motor controller.

[0006] Optionally, a medium outlet is used to discharge the arc extinguishing medium out of the first preset space;

[0007] Wherein, the medium outlet is configured to be closed so that the first preset space is at least in a closed state relative to the space inside the shell.

[0008] Optionally, a sealing member is used to seal the medium outlet so that the first preset space is at least in a closed state relative to the space inside the shell.

[0009] Optionally, along the first direction, the first projection of the medium outlet falls within the second projection of the sealing member, or

[0010] Along the first direction, a first projection of the medium outlet completely overlaps with a second projection of the sealing member.

[0011] Optionally, the sealing member is configured as an injection-molded member.

[0012] Optionally, the opening member, when triggered, generates an opening force that causes the first preset space to be at least in an open state relative to the space inside the shell;

[0013] The opening force is applied to the sealing member to open the medium outlet.

[0014] Optionally, the control circuit is electrically connected to the opening member to trigger the opening member to generate an opening force.

[0015] Optionally, the opening member comprises:

[0016] a charge room, for storing explosive fuel;

[0017] an ignition tube connected to the charge chamber;

[0018] Wherein, the ignition component ignites the explosion fuel according to the electrical signal output by the control circuit, so that the opening component generates an opening force.

[0019] Optionally, the control circuit includes: a detection module, which is used to send an electrical signal to the ignition component when the control circuit starts arcing.

[0020] Optionally, it also includes:

[0021] A medium inlet, used for adding the arc extinguishing medium into the first preset space;

[0022] During the adding process, the first preset space is in a closed state relative to the space inside the shell.

[0023] Optionally, it also includes:

[0024] an air inlet valve connected to the medium inlet;

[0025] Wherein, the air inlet valve is configured to be unidirectionally conductive so as to add the arc extinguishing medium into the first preset space.

[0026] Optionally, the arc extinguishing medium includes a mixture of any one or more of compressed air, carbon dioxide, nitrogen, sulfur hexafluoride, and perfluorohexanone.

[0027] According to a second aspect of the present application, a motor controller is provided, comprising:

[0028] A shell having an inner shell space;

[0029] Part of the space inside the shell can be constructed as the first preset space.

[0030] Optionally, it also includes:

[0031] A second preset space is formed by a portion of the shell space;

[0032] Wherein, the first preset space is at least in a closed state relative to the second preset space;

[0033] The control circuit is located in the second preset space, and when the first preset space is in an open state, the arc extinguishing medium located in the first preset space is released along the medium outlet to the second preset space.

[0034] Optionally, it also includes:

[0035] a partition, formed on or connected to the shell, for partitioning the space inside the shell into at least the first preset space and the second preset space;

[0036] Therein, at least the medium outlet is formed to the partition.

[0037] Optionally, the closure forms or is connected to the partition.

[0038] According to a third aspect of the present application, a battery pack is provided, comprising the above-mentioned arc extinguishing device or motor controller.

[0039] According to a fourth aspect of the present application, a vehicle is provided, comprising the above-mentioned arc extinguishing device or motor controller or battery pack.

[0040] The beneficial effects of the present application are: providing an arc extinguishing device, a motor controller, a battery pack and a vehicle that improve vehicle safety by providing a first preset space for storing arc extinguishing medium.

[0041] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0042] The arc extinguishing medium is stored in the first preset space of the housing, so that the arc extinguishing device and the motor controller are integrated into one design, which does not occupy additional space and is easier to be used inside the motor controller;

[0043] The exhaust valve is integrated with other modules inside the motor controller so that the device can be triggered at the initial stage of arcing and fire, reducing the probability of accidents.

[0044] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0046] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0047] Figure 1 is a schematic diagram of a planar structure of a motor controller provided in an exemplary embodiment of the present application;

[0048] Figure 2 is a schematic cross-sectional structure diagram of a first preset space provided in an exemplary embodiment of the present application;

[0049] Figure 3 is a schematic diagram of the three-dimensional structure of a motor controller provided in an exemplary embodiment of the present application;

[0050] Figure 4 is a schematic cross-sectional structure diagram of an opening member provided in an exemplary embodiment of the present application;

[0051] Figure 5 is a working principle diagram of the arc extinguishing device provided in an exemplary embodiment of the present application;

[0052] Figure 6 is a schematic diagram of an exploded structure of a motor controller provided in an exemplary embodiment of the present application;

[0053] Figure 7 is another exploded structural schematic diagram of a motor controller provided in an exemplary embodiment of the present application;

[0054] Figure 8 is another exploded structural schematic diagram of a motor controller provided in an exemplary embodiment of the present application;

[0055] Fig. 9 It is a schematic structural diagram of a vehicle provided in an exemplary embodiment of the present application.

[0056] Description of reference numerals:

[0057] 1. Vehicles;

[0058] 10. Motor controller; 11. Housing; 12. Second preset space; 13. Separator;

[0059] 100, arc extinguishing device; 110, first preset space; 111, medium outlet; 112, medium inlet; 113, air inlet valve; 114, first cover plate;

[0060] 120. Sealing parts;

[0061] 130. Opening piece; 131. Charge chamber; 132. Ignition tube;

[0062] 140. control circuit; 141. detection module;

[0063] 150. Cooling water channel; 151. Second cover plate. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0065] According to the first aspect of the present application, reference Figures 1 to 3 The present application provides an arc extinguishing device 100, including a first preset space 110 for storing an arc extinguishing medium. It should be noted that the first preset space 110 is configured as a space inside the shell of the motor controller 10. Under normal circumstances, the first preset space 110 is configured to be in a closed state. When an arc (fire) occurs in the motor controller 10, the first preset space 110 is no longer closed to release the arc extinguishing medium, thereby achieving an arc (fire) extinguishing effect.

[0066] On this basis, the arc extinguishing device 100 is provided with a medium outlet 111 for discharging the arc extinguishing medium out of the first preset space 110 . The medium outlet 111 is configured to be closed so that the first preset space 110 is at least in a closed state relative to the space inside the shell of the motor controller 10 .

[0067] Through the above technical solution, the arc extinguishing device 100 of the present application is integrated with the motor controller 10, which is easier to be applied inside the motor controller 10 and improves space utilization.

[0068] In some embodiments of the present application, reference Figure 4 As shown, the arc extinguishing device 100 includes a sealing member 120 for sealing the medium outlet 111, so that the first preset space 110 is at least in a closed state relative to the inner space of the motor controller 10. In some more specific examples, along the first direction, the first projection of the medium outlet 111 falls into the second projection of the sealing member 120, or, along the first direction, the first projection of the medium outlet 111 completely overlaps with the second projection of the sealing member 120. It should be noted that the first direction is Figures 1 to 3 The z-axis direction shown in .

[0069] In some embodiments of the present application, the arc extinguishing device 100 also includes an opening member 130, which generates an opening force when triggered to make the first preset space 110 at least open relative to the space inside the shell; wherein the opening force is applied to the sealing member 120 to open the medium outlet 111.

[0070] More specifically, in some embodiments of the present application, the opening member 130 includes a charge chamber 131 and an ignition tube 132, the charge chamber 131 is used to store explosive fuel, and the ignition tube 132 is connected to the charge chamber 131 and ignites the explosive fuel according to an electrical signal, so that the opening member 130 generates an opening force. In some examples, the opening member 130 is fixedly connected to the housing 11 or the sealing member 120 of the motor controller 10. It should be noted that other parts of the arc extinguishing device 100 will not be damaged during the explosion of the explosive fuel, so the arc extinguishing device 100 can be repaired and reused by replacing the opening member 130 and the sealing member 120, which reduces the difficulty of maintenance and replacement.

[0071] On this basis, the material strength of the sealing member 120 needs to be less than the material strength of other parts of the arc extinguishing device 100. In some embodiments of the present application, the sealing member 120 is constructed as an injection molded part. When the sealing member 120 is an injection molded part, it is more easily destroyed by the opening force generated by the opening member 130, so that the arc extinguishing medium can be dispersed from the medium outlet 111. In some other examples, refer to Figure 4 As shown, on the basis of ensuring that the sealing member 120 can seal the first preset space 110 and can withstand the pressure after the arc extinguishing medium is pressurized, the thickness of the sealing member 120 is smaller than the thickness of the main part of the opening member 130, and is also smaller than the thickness of the housing 11 of the motor controller 10. It should be noted that in some other embodiments, the sealing member 120 and the opening member 130 can also be an integral body to form an outlet valve, and the outlet valve can use a sealing ring, friction welding, threaded fastening, etc. to seal the first preset space 110, and this application does not make specific restrictions.

[0072] It should be noted that part of the opening piece 130 can also be composed of an injection molded part, so that this part can be destroyed in the explosion, which is conducive to the release of the arc extinguishing medium, or the opening piece 130 itself has an outlet. When the explosion fuel is burned out in an instant and the sealing piece 120 is destroyed, the arc extinguishing medium passes through the medium outlet 111 and then through the outlet of the opening piece 130 to enter the space inside the shell of the motor controller 10 for arc extinguishing.

[0073] Reference Figure 5 As shown, in some embodiments of the present application, the arc extinguishing device 100 also includes a control circuit 140, and the control circuit 140 is electrically connected to the opening piece 130 to trigger the opening piece 130 to generate an opening force. Specifically, the control circuit 140 also includes a detection module 141, which is used to send an electrical signal to the ignition tube 132 when the control circuit 140 starts an arc.

[0074] In some embodiments of the present application, the arc extinguishing device 100 further includes a medium inlet 112 for adding arc extinguishing medium into the first preset space 110. During the adding process, the first preset space 110 is in a closed state relative to the space inside the shell. It should be noted that an air inlet valve 113 is connected to the medium inlet 112, and the air inlet valve 113 is configured to be unidirectionally conductive to add arc extinguishing medium into the first preset space 110. By setting the air inlet valve 113 and the sealing member 120, the first preset space 110 can be in a closed state under normal circumstances to avoid leakage of the arc extinguishing medium, and when an arc (fire) occurs in the motor controller 10, the arc extinguishing medium can be released into the space inside the shell of the motor controller 10 to avoid accidents.

[0075] In some specific examples, the air inlet valve 113 can adopt a two-way valve such as a one-way valve, a ball valve or a needle valve. In this case, the air inlet valve 113 is installed at the medium inlet 112 in an inflatable welding and sealing manner. The arc extinguishing medium in the first preset space 110 is provided by an external inflatable structure. When the inflatable head of the inflatable structure is connected to the air inlet valve 113, the arc extinguishing medium is filled into the first preset space 110 and the arc extinguishing medium is pressurized. When the inflatable head of the inflatable structure is disconnected from the air inlet valve 113, the air inlet valve 113 is automatically closed to prevent leakage of the arc extinguishing medium.

[0076] In some embodiments of the present application, the arc extinguishing medium can be any one or a mixture of compressed air, carbon dioxide, nitrogen, sulfur hexafluoride and perfluorohexanone. Among them, compressed air is a common non-toxic arc extinguishing medium with good insulation and arc extinguishing ability, but it should be noted that the oxygen content of compressed air needs to be reduced as much as possible to avoid aggravating combustion. Therefore, pure carbon dioxide, nitrogen and other inert gases can also be used as arc extinguishing media. It should be noted that if a better arc extinguishing effect is required, sulfur hexafluoride and perfluorohexanone can be used as arc extinguishing media. Perfluorohexanone is a colorless and odorless liquid at room temperature. It is an arc-extinguishing medium with high insulation, high thermal stability, high thermal conductivity, and high density. It can effectively isolate the arc and quickly absorb the heat released by the arc to accelerate the arc extinguishing. At the same time, it is not easy to decompose at high temperature. In addition, since the evaporation heat of perfluorohexanone is only 1 / 25 of that of water, and the vapor pressure is 25 times that of water, perfluorohexanone is easy to vaporize and exist in a gaseous state. After the arc is extinguished, a stable gas layer can be formed in the equipment. And since the fire extinguishing concentration of perfluorohexanone is 4% to 6%, the safety margin is high, which is safer for the human body when used. When it plays the role of arc extinguishing (fire), it also has a good effect in protecting the environment. Based on the above advantages of perfluorohexanone, perfluorohexanone can also be safely stored or transported in ordinary containers under normal pressure, and can also be pressurized by nitrogen and stored in a container. Under the condition of meeting the arc extinguishing (fire) performance, the volume of the first preset space 110 for storing the arc extinguishing medium can also be minimized, thereby increasing the space utilization rate of the motor controller.

[0077] It should be noted that when using an arc extinguishing medium such as sulfur hexafluoride, since sulfur hexafluoride will produce some toxic products after the high-voltage arc reaction, it is necessary to ensure the overall sealing and dryness of the motor controller 10 to reduce the content of toxic products and avoid the dissipation of these toxic products after arc extinguishing. Correspondingly, it is necessary to ensure the ventilation around the motor control box to avoid the dissipation of toxic products to the user's location. According to relevant standards, sulfur hexafluoride gas is prohibited from being directly discharged into the atmosphere. Therefore, in the motor controller 10 of the present application, the priority should be to avoid the leakage of sulfur hexafluoride gas. After solving the arc extinguishing problem, in the subsequent maintenance process, it is also necessary to inspect the sulfur hexafluoride in the motor controller 10 according to the standards and properly purify it.

[0078] According to a second aspect of the present application, a motor controller 10 is provided, comprising a housing 11 having an inner shell space. Part of the inner shell space can be configured as a first preset space 110. In some examples, during the casting process of the housing 11 of the motor controller 10, the motor controller 10 is appropriately deformed to form a groove, and then the groove is sealed by a first cover plate 114, so that the first preset space 110 can be formed.

[0079] Part of the space inside the shell can also be constructed as a second preset space 12, the first preset space 110 is at least in a closed state relative to the second preset space 12, the control circuit 140 and other components of the motor controller 10 are installed in the second preset space 12, and when the first preset space 110 is in an open state, the arc extinguishing medium in the first preset space 110 is released to the second preset space 12 along the medium outlet 111. In some specific examples of the present application, the electrode controller includes a separator 13, which is formed or connected to the shell 11, and is used to separate the space inside the shell into at least the first preset space 110 and the second preset space 12, wherein, with reference to Figures 6 to 8 As shown, at least a medium outlet 111 is formed on the partition 13. On this basis, the sealing member 120 is formed or connected to the partition 13. In addition, it is necessary to punch a hole on the housing 11 of the motor controller 10 to form a medium inlet 112, referring to Figures 6 to 8 , provide different embodiments of the medium inlet 112 disposed on the housing 11. Among them, reference Figure 6 , the medium inlet 112 may be formed by opening a hole in the partition 13; or, referring to Figure 7 , the medium inlet 112 may be disposed on the first cover plate 114; or, referring to Figure 8 The medium inlet 112 may also be disposed at a side of the housing 11 or other position. The medium inlet 112 may also be disposed at other positions on the housing 11, and the present application does not impose any specific limitation on this.

[0080] In some embodiments of the present application, the control circuit 140 installed in the second preset space 12 includes an IGBT module and a capacitor, etc. When a short circuit or collision occurs in the vehicle 1, the main problem is that the IGBT module has a short circuit arc or even a fire problem. Therefore, the first preset space 110 is set on the motor controller 10 housing 11 near the IGBT module to be able to extinguish the arc of the IGBT module in the first place. Due to the high operating temperature of the IGBT module, the motor control box is also equipped with corresponding heat dissipation measures, refer to Figures 6 to 8 During the casting process of the housing 11 of the motor controller 10, the housing 11 is appropriately deformed so that a pit of sufficient volume is left at the location of the IGBT module in the housing 11 of the motor controller 10. The pit is covered with a second cover plate 151 of a certain thickness and sealed by welding to form a cooling water channel 150 for the flow of coolant, thereby achieving the purpose of water cooling and heat dissipation of the IGBT module. Fins are usually provided in the cooling water channel 150 to enhance the cooling effect.

[0081] In addition, the motor controller 10 of the present application may also include a DC bus, an inverter, an electromagnetic interference suppression module, a drive circuit, a heat sink, a signal acquisition module, an AC output copper bus, a resolver sensor interface and a current sensor integrated module, etc. in addition to the control circuit 140.

[0082] Among them, the DC busbar is a conductor with high conductivity, low resistance and good heat dissipation characteristics that connects the battery pack and the motor controller 10, and is used to ensure that DC power is transmitted from the battery pack to the motor controller 10 without loss or with low loss. The inverter is used to convert DC power into three-phase AC power to drive the AC motor. The inverter is usually composed of multiple power semiconductor switches. By accurately controlling the opening and closing of these switches, accurate control of the motor is achieved. The electromagnetic interference suppression module is used to reduce the electromagnetic interference generated when the inverter is working. The electromagnetic interference suppression module usually uses film capacitors or ceramic capacitors, etc., for filtering between power lines and between power lines and ground. The control circuit 140 is used to implement the signal acquisition and control algorithm of the motor controller 10, and usually includes a microcontroller or a digital signal processor and related support circuits. The core is a power module for realizing power conversion. The drive circuit is used to provide a drive signal for the switching device in the power module to ensure that the switching device can switch accurately and quickly. The heat sink is used to dissipate the heat generated by the power module and keep the key components running at a suitable operating temperature. The signal acquisition module is used to collect the three-phase current signal and position signal at the motor end to realize real-time monitoring of the motor state. The AC output copper busbar is used to realize the connection between the motor controller 10 and the motor to transmit three-phase AC power. The resolver sensor is used to provide the position signal of the motor. These resolver sensors need to be connected to the corresponding interface of the motor controller 10. The current sensor is generally integrated inside the motor controller 10 to measure the current of the motor. A Hall effect sensor or a hollow perforated sensor can be used.

[0083] According to the third aspect of the present application, a battery pack is provided, which includes the above-mentioned arc extinguishing device 100 or motor controller 10. The battery pack has all the beneficial effects of the above-mentioned arc extinguishing device 100 or motor controller 10, which will not be elaborated in this application.

[0084] According to the fourth aspect of the present application, referring to Fig. 9 , a vehicle 1 is provided, the vehicle 1 comprising the arc extinguishing device 100 or the motor controller 10 or the battery pack. The vehicle 1 has all the beneficial effects of the arc extinguishing device 100 or the motor controller 10 or the battery pack, which will not be described in detail in this application.

[0085] The vehicle 1 may be a fuel vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0086] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0087] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0088] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0089] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application has been described in examples with different focuses on the descriptions of various embodiments, for parts not described in detail in a certain embodiment, reference can be made to the relevant embodiments of other embodiments. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. An arc extinguishing device, characterized in that: include: The first preset space is used to store arc extinguishing medium; Wherein, the first preset space is configured as the space inside the shell of the motor controller.

2. The arc extinguishing device according to claim 1, characterized in that: Also includes: A medium outlet, used to discharge the arc extinguishing medium out of the first preset space; Wherein, the medium outlet is configured to be closed so that the first preset space is at least in a closed state relative to the space inside the shell.

3. The arc extinguishing device according to claim 2, characterized in that: Also includes: The sealing member is used to seal the medium outlet so that the first preset space is at least in a closed state relative to the space inside the shell.

4. The arc extinguishing device according to claim 3, characterized in that: Along the first direction, the first projection of the medium outlet falls within the second projection of the sealing member, or Along the first direction, a first projection of the medium outlet completely overlaps with a second projection of the sealing member.

5. The arc extinguishing device according to claim 3, characterized in that: The sealing member is configured as an injection-molded member.

6. The arc extinguishing device according to claim 2, characterized in that: Also includes: an opening member, which, when triggered, generates an opening force that causes the first preset space to be at least in an open state relative to the space inside the shell; The opening force is applied to the sealing member to open the medium outlet.

7. The arc extinguishing device according to claim 6, characterized in that: Also includes: The control circuit is electrically connected to the opening member so as to trigger the opening member to generate an opening force.

8. The arc extinguishing device according to claim 7, characterized in that: The opening member comprises: a charge room, for storing explosive fuel; an ignition tube connected to the charge chamber; Wherein, the ignition component ignites the explosion fuel according to the electrical signal output by the control circuit, so that the opening component generates an opening force.

9. The arc extinguishing device according to claim 8, characterized in that: The control circuit comprises: The detection module is used to send an electrical signal to the ignition tube when the control circuit starts arcing.

10. The arc extinguishing device according to claim 4, characterized in that: Also includes: A medium inlet, used for adding the arc extinguishing medium into the first preset space; During the adding process, the first preset space is in a closed state relative to the space inside the shell.

11. The arc extinguishing device according to claim 10, characterized in that: Also includes: an air inlet valve connected to the medium inlet; Wherein, the air inlet valve is configured to be unidirectionally conductive so as to add the arc extinguishing medium into the first preset space.

12. The arc extinguishing device according to any one of claims 1 to 11, characterized in that: The arc extinguishing medium includes a mixture of any one or more of compressed air, carbon dioxide, nitrogen, sulfur hexafluoride, and perfluorohexanone.

13. A motor controller, characterized in that: include: A shell having an inner shell space; Part of the space inside the shell can be constructed as the first preset space.

14. The motor controller according to claim 13, characterized in that: Also includes: A second preset space is formed by a portion of the shell space; Wherein, the first preset space is at least in a closed state relative to the second preset space; The control circuit is located in the second preset space, and when the first preset space is in an open state, the arc extinguishing medium located in the first preset space is released along the medium outlet to the second preset space.

15. The motor controller according to claim 14, characterized in that: Also includes: a partition, formed on or connected to the shell, for partitioning the space inside the shell into at least the first preset space and the second preset space; Therein, at least the medium outlet is formed to the partition.

16. The motor controller according to claim 15, characterized in that: The closure is formed or connected to the partition.

17. A battery pack, characterized in that: It comprises the arc extinguishing device as described in any one of claims 1 to 12 or the motor controller as described in any one of claims 13 to 16.

18. A vehicle, characterized in that: It comprises the arc extinguishing device as described in any one of claims 1 to 12, or the motor controller as described in any one of claims 13 to 16, or the battery pack as described in claim 17.

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