Battery energy distribution device and vehicle

Abstract

The invention relates to the technical field of vehicles, and discloses a battery energy distribution device and a vehicle, the battery energy distribution device comprises a shell and an electrical element; a containing cavity is formed in the shell, the containing cavity is filled with insulating cooling liquid, the electrical element is installed in the containing cavity, at least part of the electrical element is immersed in the insulating cooling liquid, at least one liquid inlet and at least one liquid outlet are formed in the shell in a penetrating mode, and the at least one liquid inlet and the at least one liquid outlet are both communicated with the containing cavity. According to the battery energy distribution device and the vehicle provided by the invention, the heat dissipation efficiency is relatively high, and the influence on the performance of the electrical element can be avoided.

Description

Technical Field

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

[0002] The Battery Energy Distribution Unit (BDU) is a device that disconnects and connects high voltage electricity to the power battery of new energy vehicles, and plays a vital role in the safety of the battery pack. The BDU integrates components such as relays, pre-charge resistors, current sensors, fuses, high-voltage busbars, low-voltage connectors, high-voltage voltage sampling connectors, and wiring harness assemblies.

[0003] The high-voltage electrical components in the BDU (such as relays and copper busbars) generate a lot of heat during high-power charging and discharging. Overheating will affect the function and service life of the high-voltage electrical components.

[0004] The commonly used heat dissipation method in the related technology is to use air cooling, but the heat transfer coefficient of air is low and the heat dissipation efficiency is also relatively low. Summary of the invention

[0005] In view of this, the present application provides a battery energy distribution device and a vehicle, which have high heat dissipation efficiency and can avoid affecting the performance of electrical components.

[0006] Specifically, this application includes the following technical solutions:

[0007] In a first aspect, the present application provides a battery energy distribution device, the battery energy distribution device comprising a housing and an electrical element;

[0008] The housing has a receiving cavity formed inside, the receiving cavity is filled with insulating coolant, the electrical component is installed in the receiving cavity and at least partially immersed in the insulating coolant;

[0009] Wherein, at least one liquid inlet and at least one liquid outlet are formed through the shell, and both the at least one liquid inlet and the at least one liquid outlet are communicated with the accommodating cavity.

[0010] Optionally, the electrical components include relays and conductive bars;

[0011] The relay is fixed in the accommodating cavity and at least partially immersed in the insulating coolant;

[0012] The first end of the conductive bar is connected to the top of the relay, the second end of the conductive bar extends out of the housing, and the first end is opposite to the second end.

[0013] Optionally, the battery energy distribution device further comprises a fastener and a first seal;

[0014] The relay is fixedly connected to the housing via the fastener;

[0015] The first seal covers a first connection between the fastener and the relay and a second connection between the fastener and the housing to prevent the insulating coolant from entering the first connection and the second connection.

[0016] Optionally, the battery energy distribution device further comprises a baffle located in the accommodating cavity;

[0017] The baffle is disposed around the electrical component, and the inner wall of the baffle is connected to the outer wall of the electrical component to prevent the insulating coolant below the baffle from splashing onto the portion of the electrical component above the baffle.

[0018] Optionally, the outer wall of the baffle is connected to the inner wall of the shell, and divides the accommodating chamber into a first chamber and a second chamber, the second chamber is located above the first chamber, the first chamber is filled with the insulating coolant, and the first end of the conductive row is located in the second chamber.

[0019] Optionally, the battery energy distribution device further comprises at least one of a second seal and a third seal,

[0020] The second sealing member is located between the outer wall of the electrical component and the inner wall of the baffle to seal the gap between the electrical component and the baffle;

[0021] The third sealing member is located between the outer wall of the baffle and the inner wall of the housing to seal a gap between the baffle and the inner wall of the housing.

[0022] Optionally, at least one heat dissipation hole is provided in the top wall of the shell and / or the inner wall of the shell close to the top wall, and the heat dissipation hole connects the second chamber with the external environment to at least partially dissipate the heat generated by the part of the electrical component located in the second chamber.

[0023] Optionally, the battery energy distribution device further comprises a circulation pump, a monitoring device and a controller;

[0024] The circulation pump is connected to the liquid inlet and the liquid outlet, and is used to drive the circulation of the insulating coolant;

[0025] The monitoring component is located at the liquid inlet and / or the liquid outlet, and is used to collect the temperature of the insulating coolant at the liquid inlet and / or the liquid outlet;

[0026] The controller is connected to the monitoring device signal and is configured to control the flow rate of the circulation pump according to the flow rate and temperature collected by the monitoring device.

[0027] Optionally, a connecting portion is provided on the outer wall of the shell, and the connecting portion is used to be fixedly connected to the battery box.

[0028] A second aspect of the present application provides a vehicle, comprising the above-mentioned battery energy distribution device.

[0029] The beneficial effects of the technical solution provided by the embodiments of the present application include at least:

[0030] In the battery energy distribution device and vehicle provided in the embodiments of the present application, the electrical components are arranged in the accommodating cavity of the shell and are at least partially immersed in the insulating coolant inside the shell. The insulating coolant can circulate in the accommodating cavity through the liquid inlet and the liquid outlet, and exchange heat with the electrical components while flowing, so as to promptly take away the heat generated by the electrical components when the electrical components generate heat during operation, thereby keeping the temperature of the electrical components within a stable range at all times. In this way, the electrical components can also always remain in a high-efficiency state, avoiding the heat generated by the electrical components themselves from affecting their performance, thereby improving the service life of the electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0032] Figure 1 A schematic diagram of the structure of a battery energy distribution device provided in an embodiment of the present application is shown;

[0033] Figure 2 A cross-sectional view of a battery energy distribution device provided by an embodiment of the present application is shown;

[0034] Figure 3 A schematic diagram showing the connection relationship between the housing, circulating pump, monitoring component and controller provided in an embodiment of the present application is shown. Description of the drawings:

[0036] 1. Shell; 11. Accommodating cavity; 111. First chamber; 1111. Heat dissipation through hole; 112. Second chamber; 12. Liquid inlet; 13. Liquid outlet; 14. Connecting part;

[0037] 2. Electrical components; 21. Relay; 22. Conductive bar;

[0038] 3. Fasteners;

[0039] 4. The first sealing member;

[0040] 5. Baffle;

[0041] 6. Circulation pump;

[0042] 7. Monitoring parts;

[0043] 8. Controller.

[0044] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] The technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present application. In addition, unless otherwise defined, all technical terms used in the embodiment of the present application have the same meaning as those of ordinary skill in the art are generally understood.

[0046] In order to make the technical solutions and advantages of the present application clearer, the battery energy distribution device and the vehicle will be described in detail below with reference to the accompanying drawings.

[0047] The battery energy distribution unit is a device that disconnects and connects high voltage electricity to the power battery of new energy vehicles, and plays a vital role in the safety of the battery pack. The BDU integrates components such as relays, pre-charge resistors, current sensors, fuses, high-voltage busbars, low-voltage connectors, high-voltage voltage sampling connectors, and wiring harness assemblies.

[0048] High-voltage electrical components (such as relays) in the BDU will generate a lot of heat during high-power charging and discharging. Overheating will affect the function and service life of the high-voltage electrical components.

[0049] The commonly used heat dissipation method in the related technology is to use air cooling, but the heat transfer coefficient of air is low and the heat dissipation efficiency is also relatively low.

[0050] In this regard, the present application provides a battery energy distribution device, such as Figure 1 and Figure 2As shown, the battery energy distribution device may include a shell 1 and an electrical component 2; a accommodating cavity 11 is formed inside the shell 1, and the accommodating cavity 11 is filled with an insulating coolant. The electrical component 2 is installed in the accommodating cavity 11 and is at least partially immersed in the insulating coolant, wherein at least one liquid inlet 12 and at least one liquid outlet 13 are opened through the shell 1, and the at least one liquid inlet 12 and the at least one liquid outlet 13 are both connected to the accommodating cavity 11.

[0051] In the battery energy distribution device provided in the embodiment of the present application, the electrical component 2 is arranged in the accommodating cavity 11 of the shell 1 and is at least partially immersed in the insulating coolant inside the shell 1. The insulating coolant can circulate in the accommodating cavity 11 through the liquid inlet 12 and the liquid outlet 13, and exchange heat with the electrical component 2 while flowing, so as to promptly take away the heat generated by the electrical component 2 when the electrical component 2 generates heat during operation, thereby keeping the temperature of the electrical component 2 within a stable range at all times. In this way, the electrical component 2 can also always maintain a high-efficiency state, avoiding the heat generated by the electrical component 2 itself from affecting its performance, thereby improving the service life of the electrical component 2.

[0052] Optionally, the insulating coolant may be an electronic fluorinated liquid, such as hydrofluoroether. The electronic fluorinated liquid is a non-flammable insulating liquid with a wide operating temperature range and is suitable for use as a coolant for electrical components.

[0053] Optionally, the insulating coolant may also include any one of a water / ethylene glycol mixed solution, liquid water, silicone oil and an ester coolant.

[0054] Those skilled in the art can select and adjust the type of insulating coolant according to actual needs.

[0055] In some embodiments, the shell 1 may be provided with multiple liquid inlets 12 and one liquid outlet 13 . The multiple liquid inlets 12 are located on the same side wall of the shell 1 , and insulating coolant can be transported into the accommodating cavity 11 of the shell 1 through the multiple liquid inlets 12 .

[0056] Since there are more than one liquid inlets 12, the insulating coolant at the multiple liquid inlets 12 will collide and convect, which increases the circulation flow of the coolant. At the same time, part of the flow in the insulating coolant will be dissipated into the air, which can avoid the situation where the heat of the electrical component 2 rises sharply in a short period of time and the heat dissipation capacity of the insulating coolant is insufficient.

[0057] In some embodiments of the present application, Figure 1 and Figure 2As shown, the electrical component 2 includes a relay 21 and a conductive bar 22; the relay 21 is fixed in the accommodating cavity 11 and at least partially immersed in the insulating coolant; the first end of the conductive bar 22 is connected to the top of the relay 21, and the second end of the conductive bar 22 extends out of the housing 1, and the first end is opposite to the second end.

[0058] BDU is the key connection component between the power battery and the drive system. The control signal for BDU to cut off and close is sent by the BMS in the low-voltage circuit, and the control result is fed back to the BMS through the BDU detection circuit. Therefore, the BDU itself is a connection point between the high-voltage and low-voltage circuits of the whole vehicle, and it is also a carrier platform for the sensing and detection module. The copper busbar of the BDU (i.e., the conductive busbar 22 in this application) is used as a circuit connector, and it will also generate more heat during the battery charging and discharging process.

[0059] The first end of the copper busbar is connected to the relay 21. The relay 21 itself generates heat, and the heat of the copper busbar is also transferred to the relay 21. At least a portion of the relay 21 is immersed in the insulating coolant. The insulating coolant can take away the heat generated by the copper busbar and the relay 21, effectively dissipate heat and cool down, and keep the temperatures of the two within a certain range; and the second end of the copper busbar is exposed from the housing 1 and can be electrically connected to other electrical components 2, ensuring the normal operation of the copper busbar and the BDU.

[0060] In some embodiments, Figure 2 As shown, the battery energy distribution device may further include a conductive member. A through hole is opened on the copper busbar. The conductive member passes through the through hole and is connected to the relay 21 , thereby realizing electrical connection between the copper busbar and the relay 21 .

[0061] Optionally, the conductive member can be a bolt, the screw portion of the bolt is passed through the through hole on the copper busbar and is threadedly connected to the relay 21 to achieve a fixed connection between the copper busbar and the relay 21, and the nut portion of the bolt is pressed onto the copper busbar to achieve an electrical connection between the two.

[0062] During the driving process of the vehicle, the BDU will be affected to varying degrees due to acceleration, braking or bumps. In order to prevent the electrical components 2 inside the BDU from shaking and stopping working or being damaged, in some embodiments of the present application, Figure 2 As shown, the battery energy distribution device may also include a fastener 3 and a first seal 4; the relay 21 is fixedly connected to the housing 1 through the fastener 3, and the first seal 4 covers the first connection between the fastener 3 and the relay 21, and the second connection between the fastener 3 and the housing 1 to prevent the insulating coolant from entering the first connection and the second connection.

[0063] In the battery energy distribution device provided in the embodiment of the present application, a fastener 3 is also provided. The fastener 3 can realize a fixed connection between the relay 21 and the accommodating cavity 11, thereby ensuring that the relay 21 will not shake or collide when the vehicle is driving, thereby reducing the probability of damage to the relay 21 and improving the service life of the BDU.

[0064] Furthermore, since at least part of the relay 21 is immersed in the insulating coolant in the accommodating cavity 11, the fastener 3 may also be immersed in the insulating coolant all the time, and the fastener 3 may suffer from problems such as chemical corrosion. If the fastener 3 breaks, the relay 21 will also be affected.

[0065] Therefore, in the battery energy distribution device provided in the embodiment of the present application, a first seal 4 is further provided. The first seal 4 covers the outside of the fastener 3 and is sealed to the relay 21, thereby blocking the insulating coolant outside the first seal 4, so that the fastener 3 is always in a dry state, reducing the probability of chemical corrosion of the fastener 3 and improving the service life of the fastener 3.

[0066] Optionally, the fastener 3 can be a bolt, and a through hole is opened at the bottom of the shell 1. The bolt is inserted into the through hole and connected to the relay 21 to achieve a fixed connection between the relay 21 and the shell 1. The screw portion of the bolt is exposed from the relay 21, and the first sealing member 4 is covered on the outside of the bolt to prevent the insulating coolant from submerging the bolt.

[0067] In the above embodiment, a through hole is provided at the bottom of the shell 1. Although the first seal 4 can prevent the insulating coolant from entering, when the first seal 4 is damaged or the sealing performance deteriorates, the insulating coolant may enter the interior of the first seal 4 and flow to the outside of the shell 1 along the through hole, that is, leakage may occur, which may affect the battery box or other components of the vehicle.

[0068] In some embodiments, a blind hole may be opened on the bottom wall of the housing 1 , and the fastener 3 is passed through the relay 21 and threadedly connected to the blind hole to achieve a fixed connection between the relay 21 and the housing 1 .

[0069] Since the bottom wall is provided with a blind hole, liquid leakage will not occur even when the first sealing member 4 is damaged or the sealing performance is reduced, thereby improving the safety factor of the BDU and the vehicle.

[0070] Optionally, the first sealing member 4 may be a rubber sealing cover, a silicone sealing cover, etc., and those skilled in the art may select and adjust the same according to actual needs.

[0071] In some embodiments of the present application, Figure 2As shown, the battery energy distribution device may further include a baffle 5 located in the accommodating cavity 11, the baffle 5 is arranged around the electrical component 2, and the inner wall of the baffle 5 is connected to the outer wall of the electrical component 2 to prevent the insulating coolant below the baffle 5 from splashing to the portion of the electrical component 2 located above the baffle 5.

[0072] The sealing or corrosion resistance of the portion of the electrical component 2 located above the baffle 5 may be poor, and it cannot be immersed in the insulating coolant for a long time, otherwise it may have a significant impact on the performance. Therefore, another baffle 5 can be set in the accommodating cavity 11, and the baffle 5 is connected to the outer wall of the electrical component 2, and blocks the insulating coolant when the insulating coolant shakes, so as to avoid affecting the electrical component 2.

[0073] Furthermore, according to the contents of the above embodiments, the copper busbar can be fixedly connected and electrically connected to the relay 21 by bolts or other connectors. The insulating coolant in the accommodating cavity 11 may flush the connector during the driving of the vehicle, and the connector may be damaged. The provision of the baffle 5 can also reduce the probability of damage to the connector and increase the service life of the connector and the BDU.

[0074] During the driving process of the vehicle, the BDU will be affected to varying degrees due to acceleration, braking or bumps, and the accommodating cavity 11 of the shell 1 is filled with insulating coolant. When the insulating coolant does not fill the accommodating cavity 11, it will shake due to the above reasons, and then it will impact or collide with the electrical component 2 and the inner wall of the accommodating cavity 11.

[0075] In the battery energy distribution device provided in the embodiment of the present application, the outer wall of the baffle 5 is connected to the inner wall of the shell 1, and divides the accommodating chamber 11 into a first chamber 111 and a second chamber 112. The second chamber 112 is located above the first chamber 111. The first chamber 111 is filled with insulating coolant, and the first end of the conductive row 22 is located in the second chamber 112.

[0076] It should be noted that Figure 2 For example, from bottom to top, there are the first chamber 111 and the second chamber 112. The upper and lower parts of the first chamber 111 mentioned in this embodiment are the same as Figure 2 The up and down directions are consistent.

[0077] The baffle 5 is respectively connected to the relay 21 and the inner wall of the accommodating chamber 11. The insulating coolant is blocked by the baffle 5 in the first chamber 111, which is equivalent to compressing the space of the accommodating chamber 11, thereby increasing the space occupancy rate of the insulating coolant in the accommodating chamber 11. When the insulating coolant shakes, the amplitude of the shaking can be weakened to a certain extent, thereby avoiding severe impact on the electrical component 2 and the accommodating chamber 11.

[0078] In some embodiments, the baffle 5 may be made of a thermally conductive material having a thermal conductivity greater than 4 W / mK, so as to achieve a better heat exchange effect.

[0079] In other embodiments, the baffle 5 may be a liquid cooling plate, and a liquid cooling channel is provided inside the plate body. The liquid cooling channel contains a coolant, and liquid cooling circulation can be performed to enhance the heat exchange effect. The coolant in the liquid cooling channel and the insulating coolant in the second chamber 112 circulate independently, and the composition of the coolant in the liquid cooling channel and the insulating coolant in the second chamber 112 may be the same or different.

[0080] Optionally, the housing 1 may be a heat dissipation housing made of a heat-conducting material.

[0081] In some embodiments of the present application, the battery energy distribution device may also include at least one of a second seal and a third seal, the second seal being located between the outer wall of the electrical component 2 and the inner wall of the baffle 5 to seal the gap between the electrical component 2 and the baffle 5; the third seal being located between the outer wall of the baffle 5 and the inner wall of the shell 1 to seal the gap between the baffle 5 and the inner wall of the shell 1.

[0082] By setting a second seal between the baffle 5 and the electrical component 2, and setting a third seal between the baffle 5 and the shell 1, the sealing of the first chamber 111 can be ensured, thereby preventing the insulating coolant in the first chamber 111 from flowing into the second chamber 112 and affecting the part of the electrical component 2 above the baffle 5.

[0083] Optionally, the second sealing member and the third sealing member may be rubber sealing rings and sealants, etc., and those skilled in the art may select and adjust them according to actual needs.

[0084] In some embodiments, the baffle 5 and the outer wall of the electrical component 2 are an integrally formed structure, in which case the second sealing member mentioned above can be omitted, and the sealing of the first chamber 111 can also be ensured.

[0085] In some embodiments of the present application, Figure 1 As shown, at least one heat dissipation hole 1111 is provided on the top wall of the shell 1 and / or the inner wall of the shell 1 close to the top wall, and the heat dissipation hole 1111 connects the second chamber 112 with the external environment to at least partially dissipate the heat generated by the portion of the electrical component 2 located in the second chamber 112.

[0086] The conductive bar 22 is electrically connected to the relay 21 . When the relay 21 is working, the conductive bar 22 will also generate heat. This part of the heat will accumulate in the second chamber 112 . If it cannot be discharged in time, it may also affect the working performance of the relay 21 .

[0087] Since the baffle 5 separates the accommodating chamber 11 into a first chamber 111 and a second chamber 112, and the first chamber 111 and the second chamber 112 are not connected to each other, a heat dissipation hole 1111 can be opened on the top of the shell 1, and part of the heat generated by the conductive bar 22 can be directly dissipated to the outside through the air, and the other part of the heat can be dissipated through the relay 21 and the insulating coolant, thereby improving the heat dissipation efficiency without affecting the operation of the relay 21.

[0088] In some embodiments of the present application, Figure 1 and Figure 3 As shown, the battery energy distribution device also includes a circulation pump 6, a monitoring component 7 and a controller 8. The circulation pump 6 is connected to the liquid inlet 12 and the liquid outlet 13, and is used to drive the circulation of the insulating coolant; the monitoring component 7 is located at the liquid inlet 12 and / or the liquid outlet 13, and is used to collect the temperature of the insulating coolant at the liquid inlet 12 and / or the liquid outlet 13; the controller 8 is connected to the monitoring component 7 by signal, and is configured to control the flow rate of the circulation pump 6 according to the flow rate and temperature collected by the monitoring component 7.

[0089] The circulation pump 6 can drive the insulating coolant to circulate and continuously dissipate heat for the electrical components 2, and a monitoring device 7 and a controller 8 can be provided at the liquid inlet 12 and / or the liquid outlet 13, which can monitor the temperature difference of the insulating coolant before and after the heat exchange, and then obtain the heat exchange efficiency of the insulating coolant. When the heat exchange efficiency is low, the flow rate of the insulating coolant is controlled by the controller 8 to ensure the heat dissipation efficiency of the electrical components 2, thereby ensuring the working performance of the BDU.

[0090] Optionally, the monitoring component 7 may be a sensor, a flow meter, a thermometer, etc. Those skilled in the art may select and adjust the type of the monitoring component 7 according to actual needs.

[0091] Optionally, the circulation pump 6 can be replaced by a flow control valve, which is generally arranged at the liquid inlet and the liquid outlet to control the flow of the insulating coolant in and out. In this case, the controller 8 can control the opening of the flow control valve.

[0092] In some embodiments of the present application, a connecting portion 14 is provided on the outer wall of the shell 1, and the connecting portion 14 is used to be fixedly connected to the battery box.

[0093] For example, Figure 1 As shown, the connecting portion 14 is connected to the outer wall of the shell 1, and a through hole is opened on the connecting portion 14. The battery box and the connecting portion 14 can be fixedly connected by connecting parts such as bolts.

[0094] Optionally, the connecting piece may also be a snap-fit ​​structure, and a snap-fit ​​portion is correspondingly provided on the battery box, and the housing 1 is snap-fitted to the battery box.

[0095] The connection portion 14 can also be connected to the battery box by a detachable connection such as a plug connection and a pin connection. Those skilled in the art can select and adjust the connection method between the housing 1 and the battery box according to actual needs.

[0096] The present application also provides a vehicle, which includes the battery energy distribution device in the above embodiment.

[0097] In the vehicle provided in the embodiment of the present application, the electrical component 2 is arranged in the accommodating cavity 11 of the shell 1 and is at least partially immersed in the insulating coolant inside the shell 1. The insulating coolant can circulate in the accommodating cavity 11 through the liquid inlet 12 and the liquid outlet 13, and exchange heat with the electrical component 2 while flowing, so as to promptly take away the heat generated by the electrical component 2 when the electrical component 2 generates heat during operation, thereby keeping the temperature of the electrical component 2 within a stable range at all times. In this way, the electrical component 2 can also always maintain a high-efficiency state, avoiding the heat generated by the electrical component 2 itself from affecting its performance, thereby improving the service life of the electrical component 2.

[0098] Furthermore, since the vehicle provided in the embodiment of the present application adopts the above-mentioned battery energy distribution device, the number of maintenance times can be reduced and the BDU power distribution is more stable.

[0099] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. The term "plurality" refers to two or more, unless otherwise expressly defined.

[0100] It should be noted that in this application, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals. "Connection" and "connected" can both refer to a mechanical connection relationship or a physical connection relationship, that is, A is connected to B or A is connected to B, which means that there is a fastening component (such as screws, bolts, rivets, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0101] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0102] It should be understood that the present application is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. A battery energy distribution device, characterized in that: The battery energy distribution device comprises a housing (1) and an electrical component (2); The housing (1) has an accommodating cavity (11) formed inside, the accommodating cavity (11) is filled with insulating coolant, the electrical component (2) is installed in the accommodating cavity (11) and is at least partially immersed in the insulating coolant, wherein at least one liquid inlet (12) and at least one liquid outlet (13) are formed through the housing (1), and both the at least one liquid inlet (12) and the at least one liquid outlet (13) are in communication with the accommodating cavity (11).

2. The battery energy distribution device according to claim 1, characterized in that: The electrical component (2) comprises a relay (21) and a conductive bar (22); The relay (21) is fixed in the accommodating cavity (11) and at least partially immersed in the insulating coolant; The first end of the conductive bar (22) is connected to the top of the relay (21), the second end of the conductive bar (22) extends out of the housing (1), and the first end is opposite to the second end.

3. The battery energy distribution device according to claim 2, characterized in that: The battery energy distribution device also includes a fastener (3) and a first sealing member (4); The relay (21) is fixedly connected to the housing (1) via the fastener (3), and the first seal (4) covers a first connection between the fastener (3) and the relay (21), and a second connection between the fastener (3) and the housing (1), so as to prevent the insulating coolant from entering the first connection and the second connection.

4. The battery energy distribution device according to claim 2, characterized in that: The battery energy distribution device also includes a baffle (5) located in the accommodating cavity (11), the baffle (5) surrounding the electrical component (2), and the inner wall of the baffle (5) is connected to the outer wall of the electrical component (2) to prevent the insulating coolant below the baffle (5) from splashing onto the portion of the electrical component (2) located above the baffle (5).

5. The battery energy distribution device according to claim 4, characterized in that: The outer wall of the baffle (5) is connected to the inner wall of the shell (1), and divides the accommodating chamber (11) into a first chamber (111) and a second chamber (112), wherein the second chamber (112) is located above the first chamber (111), the first chamber (111) is filled with the insulating coolant, and the first end of the conductive bar (22) is located in the second chamber (112).

6. The battery energy distribution device according to claim 5, characterized in that: The battery energy distribution device further comprises at least one of a second seal and a third seal, The second sealing member is located between the outer wall of the electrical component (2) and the inner wall of the baffle (5) to seal the gap between the electrical component (2) and the baffle (5); The third sealing member is located between the outer wall of the baffle plate (5) and the inner wall of the shell (1) to seal the gap between the baffle plate (5) and the inner wall of the shell (1).

7. The battery energy distribution device according to claim 5, characterized in that: At least one heat dissipation through hole (1111) is provided on the top wall of the shell (1) and / or on the inner wall of the shell (1) close to the top wall, and the heat dissipation through hole (1111) connects the second chamber (112) with the external environment so as to at least partially dissipate the heat generated by the portion of the electrical component (2) located in the second chamber (112).

8. The battery energy distribution device according to claim 1, characterized in that: The battery energy distribution device also includes a circulation pump (6), a monitoring device (7) and a controller (8); The circulation pump (6) is connected to the liquid inlet (12) and the liquid outlet (13) and is used to drive the circulation of the insulating coolant; The monitoring component (7) is located at the liquid inlet (12) and / or the liquid outlet (13), and is used to collect the temperature of the insulating coolant at the liquid inlet (12) and / or the liquid outlet (13); The controller (8) is connected to the monitoring device (7) by signals, and is configured to control the flow rate of the circulation pump (6) according to the flow rate and temperature collected by the monitoring device (7).

9. The battery energy distribution device according to claim 1, characterized in that: A connecting portion (14) is provided on the outer wall of the shell (1), and the connecting portion (14) is used for fixedly connecting to the battery box.

10. A vehicle, characterized in that: The vehicle comprises a battery energy distribution device as claimed in any one of claims 1 to 9.

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