Battery pack and vehicle

Abstract

The invention relates to a battery pack and a vehicle, the battery pack comprises a box body, a plurality of battery cells, a vehicle-mounted power supply system and a battery power distribution system, the box body is provided with a containing cavity, and a heat exchange plate is formed by one part of the box body and / or the heat exchange plate is arranged in the containing cavity; the battery cell is arranged in the accommodating cavity; at least one of the vehicle-mounted power supply system and the battery power distribution system is an internal system, and the internal system is arranged in the accommodating cavity; wherein the internal system and at least one battery cell share the same heat exchange plate. According to the battery pack disclosed by the invention, a heat exchange plate for cooling and radiating an internal system can be prevented from being independently arranged, so that the number of parts in the battery pack can be reduced, the weight of the battery pack is reduced, and the cost of the battery pack is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power batteries, and particularly to a battery pack and a vehicle. Background Art

[0002] Currently, the on-vehicle power supply system and the battery power distribution system are less integrated into the battery pack. Even if a few physical integrations are made, the cooling systems of the on-vehicle power supply system, the battery power distribution system, and the battery pack are still independently arranged. For example, some products divide the battery pack into two layers, and the on-vehicle power supply system and the battery power distribution system are arranged in the second layer of the battery pack. The on-vehicle power supply system and the battery cells use two sets of independent water-cooling plates for cooling and heat dissipation. This results in a large number of components in the battery pack, a large weight, and a high cost of the battery pack. Summary of the Invention

[0003] The present disclosure aims to at least partly solve one of the technical problems in the related art.

[0004] To this end, the present disclosure provides a battery pack to reduce the weight and cost of the battery pack.

[0005] The battery pack of the present disclosure includes a box body, a plurality of battery cells, an on-vehicle power supply system, and a battery power distribution system. The box body has a receiving cavity, and a part of the box body forms a heat exchange plate and / or a heat exchange plate is provided in the receiving cavity; the battery cells are arranged in the receiving cavity; at least one of the on-vehicle power supply system and the battery power distribution system is an internal system, and the internal system is arranged in the receiving cavity; wherein, the internal system and at least one of the battery cells share the same heat exchange plate.

[0006] Optionally, the box body includes a bottom plate, a cover plate, and an annular frame. The bottom of the frame is connected to the bottom plate, and the top of the frame is connected to the cover plate. The bottom plate, the frame, and the cover plate enclose the receiving cavity; the bottom plate forms the heat exchange plate, and the bottom surfaces of the battery cells and the internal system are both attached to the top surface of the bottom plate.

[0007] Optionally, the on-vehicle power supply system is the internal system. The on-vehicle power supply system includes a substrate and a power module. The substrate is attached to the heat exchange plate, and the power module is arranged on the side of the substrate away from the heat exchange plate and is connected to the substrate.

[0008] Optionally, the substrate is bonded to the heat exchange plate with a thermal conductive adhesive; and / or, the projection of the substrate on the heat exchange plate is located inside the heat exchange plate.

[0009] Optionally, the box body includes a bottom plate, a cover plate, and an annular frame. The bottom of the frame is connected to the bottom plate, and the top of the frame is connected to the cover plate. An accommodation cavity is formed among the bottom plate, the frame, and the cover plate. The heat exchange plate is disposed in the accommodation cavity and intersects with the bottom plate. The sides of at least one of the battery cells and the internal system are both attached to the surface of the same heat exchange plate.

[0010] Optionally, a potting cavity is formed among the box body, the battery cells, and the internal system, and potting glue is filled in the potting cavity.

[0011] Optionally, the bottom surface of the battery cell is flush with the bottom surface of the internal system; the top surface of the battery cell is flush with the top surface of the internal system.

[0012] Optionally, the internal system and the multiple battery cells form multiple heat generating components, and the multiple heat generating components are arranged at intervals in a first direction, where the first direction intersects with the height direction of the box body.

[0013] Optionally, the heat exchange plate is disposed in the accommodation cavity, and the number of the heat exchange plates is multiple. The multiple heat exchange plates are arranged at intervals in the first direction, and the heat exchange plates and the heat generating components are arranged alternately in the first direction in sequence, and the heat generating components are in contact with the adjacent heat exchange plates.

[0014] Optionally, a part of the heat generating components are first components. The first component is composed of the internal system, or the first component is composed of the internal system and at least one battery cell. The internal system and the battery cell in the same first component are arranged at intervals in a second direction. Another part of the heat generating components are second components. The second component is composed of multiple battery cells. The multiple battery cells in the same second component are arranged at intervals in the second direction. Wherein, the second direction intersects with both the height direction of the box body and the first direction.

[0015] Optionally, the vehicle-mounted power supply system is the internal system. The vehicle-mounted power supply system includes a vehicle-mounted charger and a DC-DC converter. The vehicle-mounted charger and the DC-DC converter form one first component, and the vehicle-mounted charger and the DC-DC converter are arranged at intervals in the second direction; and / or, both the vehicle-mounted power supply system and the battery distribution system are the internal system. The vehicle-mounted power supply system and the battery distribution system form one first component, and the vehicle-mounted power supply system and the battery distribution system are arranged at intervals in the second direction.

[0016] Optionally, both the vehicle power supply system and the battery power distribution system are internal systems. A system housing is provided in the accommodation cavity, and both the vehicle power supply system and the battery power distribution system are disposed within the system housing.

[0017] Optionally, the system housing is provided with a heat exchange flow channel, as well as a flow channel inlet and a flow channel outlet that communicate with the heat exchange flow channel.

[0018] Optionally, a part of the heat exchange flow channel is disposed within the vehicle power supply system, and another part of the heat exchange flow channel is disposed within the battery power distribution system.

[0019] Optionally, the heat exchange flow channel includes a first flow channel section and a second flow channel section that are connected in communication. The flow channel inlet is disposed in the first flow channel section, and the flow channel outlet is disposed in the second flow channel section. A part of the first flow channel section is disposed within the vehicle power supply system, another part of the first flow channel section is disposed within the battery power distribution system, a part of the second flow channel section is disposed within the vehicle power supply system, and another part of the second flow channel section is disposed within the battery power distribution system.

[0020] Optionally, the heat exchange flow channel is U-shaped, the extending directions of the first flow channel section and the second flow channel section are the same, the heat exchange flow channel further includes a third flow channel section, both ends of the third flow channel section are respectively connected in communication with the first flow channel section and the second flow channel section, and the third flow channel section intersects with the extending direction of the first flow channel section. The vehicle power supply system is disposed on one side of the battery power distribution system in the extending direction of the first flow channel section.

[0021] Optionally, a first connector is provided on the outer side of the box body. The first connector includes a first inlet and a first outlet. The first inlet is connected to the flow channel inlet, and the first outlet is connected to the flow channel outlet.

[0022] Optionally, the heat exchange plate has a fluid channel, as well as a fluid inlet and a fluid outlet that communicate with the fluid channel. A second connector is provided on the outer side of the box body. The second connector includes a second inlet and a second outlet. The second inlet is connected to the fluid inlet, and the second outlet is connected to the fluid outlet. Among them, the second inlet is in parallel connection with the first inlet, and the second outlet is in parallel connection with the second outlet.

[0023] Optionally, the vehicle power supply system and the battery power distribution system are electrically connected through a connection bar; and / or, both the vehicle power supply system and the battery power distribution system include an outer shell, and the system housing forms the outer shell of the vehicle power supply system, and the system housing forms the outer shell of the battery power distribution system.

[0024] The present disclosure also provides a vehicle.

[0025] The vehicle of the present disclosure includes the battery pack described in any one of the above.

[0026] By setting at least one of the vehicle power supply system and the battery power distribution system as an internal system, arranging the internal system in the accommodation cavity for accommodating the battery cells, and sharing the same heat exchange plate between the internal system and at least one battery cell, the heat of the internal system and the heat of the battery cells can be transferred to the heat exchange plate, so as to realize the cooling and heat dissipation of the internal system and the battery cells by using the same heat exchange plate. Thus, it is possible to avoid separately providing a heat exchange plate for cooling and heat dissipating the internal system, thereby reducing the number of components in the battery pack, reducing the weight of the battery pack and lowering the cost of the battery pack. Description of the Drawings

[0027] Figure 1 is the front view of the battery pack according to an embodiment of the present disclosure (some components are not shown).

[0028] Figure 2 is the top view of the battery pack according to an embodiment of the present disclosure (some components are not shown).

[0029] Figure 3 is the front view of the battery pack according to another embodiment of the present disclosure (some components are not shown).

[0030] Figure 4 is the top view of the battery pack according to another embodiment of the present disclosure (some components are not shown).

[0031] Figure 5 is the front view of the battery pack according to still another embodiment of the present disclosure (some components are not shown).

[0032] Figure 6 is the top view of the battery pack according to still another embodiment of the present disclosure (some components are not shown).

[0033] Figure 7 is the structural schematic diagram of the vehicle power supply system and the battery power distribution system in the battery pack according to still another embodiment of the present disclosure.

[0034] Reference Signs:

[0035] 1. Heat exchange plate;

[0036] 2. Battery cell; 201. Top surface of battery cell; 202. Side surface of battery cell; 203. Bottom surface of battery cell; 21. Heat generating component; 211. First component; 212. Second component;

[0037] 3. Internal system; 301. System top surface; 302. System side surface; 303. System bottom surface; 31. Vehicle-mounted power supply system; 311. Substrate; 312. Power module; 313. On-vehicle charger; 314. DC converter; 32. Battery distribution system; 33. System housing; 331. Heat exchange flow channel; 3311. First flow channel section; 3312. Second flow channel section; 3313. Third flow channel section; 332. Flow channel inlet; 333. Flow channel outlet; 34. First connecting pipe; 35. Second connecting pipe;

[0038] 4. Bottom plate;

[0039] 5. Cover plate;

[0040] 6. Second joint; 61. Second inlet; 62. Second outlet. Detailed implementation manners

[0041] Embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure and should not be construed as limiting the present disclosure.

[0042] As Figures 1 to 6 shown, the battery pack of the embodiment of the present disclosure includes a box body, a plurality of battery cells 2, a vehicle-mounted power supply system (charger converter unit, hereinafter referred to as CCU) 31, and a battery distribution system (Battery energy Distribution Unit, hereinafter referred to as BDU) 32. The box body has a receiving cavity, and a part of the box body forms a heat exchange plate 1 and / or a heat exchange plate 1 is provided in the receiving cavity. At least one of the vehicle-mounted power supply system 31 and the battery distribution system 32 is an internal system 3, and both the battery cells 2 and the internal system 3 are provided in the receiving cavity. The internal system 3 and at least one battery cell 2 share the same heat exchange plate 1.

[0043] A part of the box body forms a heat exchange plate 1 and / or a heat exchange plate 1 is provided in the receiving cavity, including the following three cases: The first case is that a part of the box body forms a heat exchange plate 1, but no heat exchange plate 1 is provided in the receiving cavity; the second case is that a heat exchange plate 1 is provided in the receiving cavity, but a part of the box body does not form a heat exchange plate 1; the third case is that a part of the box body forms a heat exchange plate 1, and a heat exchange plate 1 is provided in the receiving cavity, wherein the heat exchange plate 1 formed by the box body and the heat exchange plate 1 provided in the receiving cavity may be parallel to each other or intersect.

[0044] At least one of the vehicle-mounted power supply system 31 and the battery power distribution system 32 is the internal system 3. The internal system 3 and at least one battery cell 2 share the same heat exchange plate 1. It can be understood that one of the vehicle-mounted power supply system 31 and the battery power distribution system 32 is the internal system 3, and one of the vehicle-mounted power supply system 31 and the battery power distribution system 32 and at least one battery cell 2 are in direct or indirect contact with the same heat exchange plate 1; or, both the vehicle-mounted power supply system 31 and the battery power distribution system 32 are the internal system 3, the vehicle-mounted power supply system 31 and at least one battery cell 2 are in direct or indirect contact with the same heat exchange plate 1, and the battery power distribution system 32 and at least one battery cell 2 are in direct or indirect contact with the same heat exchange plate 1.

[0045] It can be understood that both the vehicle-mounted power supply system 31 and the battery power distribution system 32 are components related to charging and power distribution, and both will generate heat during operation. To ensure the reliability of the vehicle-mounted power supply system 31 and the battery power distribution system 32, it is necessary to cool and dissipate the heat of the vehicle-mounted power supply system 31 and the battery power distribution system 32. Especially when the charging and discharging power of the battery pack is large, it is necessary to cool and dissipate the heat of the vehicle-mounted power supply system 31.

[0046] Among them, the heat exchange plate 1 can be a heating plate or a cooling plate. When the heat exchange plate 1 is a heating plate, the temperature of the heat exchange plate 1 is higher than that of the battery cell 2. When the battery cell 2 is in contact with the heat exchange plate 1, the heat exchange plate 1 can be used to heat the battery cell 2; when the heat exchange plate 1 is a cooling plate, the temperature of the heat exchange plate 1 is lower than that of the battery cell 2. When the battery cell 2 is in contact with the heat exchange plate 1, the heat exchange plate 1 can be used to cool and dissipate the heat of the battery cell 2. For the convenience of description, the following will take the heat exchange plate 1 as a cooling plate as an example for illustration.

[0047] In the battery pack of the embodiment of the present disclosure, by setting at least one of the vehicle-mounted power supply system 31 and the battery power distribution system 32 as the internal system 3, arranging the internal system 3 in the accommodation cavity for accommodating the battery cell 2, and the internal system 3 and at least one battery cell 2 sharing the same heat exchange plate 1, the heat of the internal system 3 and the heat of the battery cell 2 can both be transferred to the heat exchange plate 1, so as to use the same heat exchange plate 1 to realize the cooling and heat dissipation of the internal system 3 and the battery cell 2. Thus, it is possible to avoid separately setting a heat exchange plate for cooling and dissipating the heat of the internal system 3, thereby reducing the number of components in the battery pack, reducing the weight of the battery pack and lowering the cost of the battery pack.

[0048] In addition, it can be understood that both the vehicle-mounted power supply system 31 and the battery power distribution system 32 generate heat during operation. In the case of a low external ambient temperature such as in winter, it is necessary to heat the battery cell 2 to improve the reliability of the battery cell 2. The heat generated by the internal system 3 can be transferred to the battery cell 2 through the heat exchange plate 1 to realize the heating of the battery cell 2. Improve the heat utilization rate inside the battery pack.

[0049] Optionally, as Figure 1As shown, the box body includes a bottom plate 4, a cover plate 5 and an annular frame. The bottom of the frame is connected to the bottom plate 4, and the top of the frame is connected to the cover plate 5. A containing cavity is formed among the bottom plate 4, the frame and the cover plate 5. Among them, the bottom of the frame can be hermetically connected to the bottom plate 4, and the top of the frame can be hermetically connected to the cover plate 5. The bottom of the frame and the bottom plate 4 can be welded, and the top of the frame and the cover plate 5 can be welded.

[0050] To make the technical solution of the present disclosure easier to understand, the following takes the height direction of the box body being consistent with the up and down direction as an example to further describe the technical solution of the present disclosure. Among them, the up and down direction is as Figure 1 , Figure 3 and Figure 5 shown.

[0051] For example, as Figure 1 shown, the cover plate 5 is arranged on the upper side of the bottom plate 4. The lower part of the frame is connected to the bottom plate 4, and the upper part of the frame is connected to the cover plate 5. A containing cavity is formed by the lower side of the cover plate 5, the upper side of the bottom plate 4 and the inner side of the frame.

[0052] In some embodiments, as Figure 1 and Figure 2 shown, the bottom plate 4 forms a heat exchange plate 1. The bottom surface of the battery cell 2 and the bottom surface of the internal system 3 are both in contact with the top surface of the bottom plate 4.

[0053] For example, as Figure 1 shown, the bottom surface of the battery cell 2 is the battery cell bottom surface 203, and the bottom surface of the internal system 3 is the system bottom surface 303. The battery cell bottom surface 203 and the system bottom surface 303 are both in contact with the top surface of the bottom plate 4. As an example, the lower surface of the battery cell 2 and the lower surface of the internal system 3 are both in contact with the upper surface of the bottom plate 4.

[0054] By forming the bottom plate 4 of the box body into the heat exchange plate 1, the heat exchange plate 1 is used both as the bottom plate 4 of the box body and as the heat exchange plate 1 for cooling and dissipating heat from the battery cell 2, that is, the heat exchange plate 1 integrates two functions of heat dissipation and support. Thus, it is beneficial to simplify the structure of the box body, thereby further reducing the weight of the battery pack and the cost of the battery pack.

[0055] Optionally, as Figure 1 and Figure 2 shown, the vehicle-mounted power supply system 31 is the internal system 3. The vehicle-mounted power supply system 31 includes a substrate 311 and a power module 312. The substrate 311 is attached to the heat exchange plate 1, and the power module 312 is arranged on the side of the substrate 311 away from the heat exchange plate 1 and is connected to the substrate 311.

[0056] For example, as Figure 1 shown, the heat exchange plate 1 is arranged on the lower side of the vehicle-mounted power supply system 31, the power module 312 is arranged on the upper side of the substrate 311, and the lower surface of the substrate 311 is attached to the upper surface of the heat exchange plate 1.

[0057] It can be understood that the surface area of the substrate 311 is relatively large. By attaching the substrate 311 to the heat exchange plate 1, it is beneficial to increase the contact area between the vehicle-mounted power supply system 31 and the heat exchange plate 1, thereby facilitating the improvement of the heat dissipation efficiency of the vehicle-mounted power supply system 31 and enhancing the reliability of the vehicle-mounted power supply system 31.

[0058] Optionally, as Figure 1 and Figure 2 shown, the substrate 311 and the heat exchange plate 1 are bonded by a thermally conductive adhesive, enabling the substrate 311 to be indirectly in contact with the heat exchange plate 1 through the thermally conductive adhesive.

[0059] Bonding the substrate 311 and the heat exchange plate 1 with a thermally conductive adhesive can not only achieve the connection between the vehicle-mounted power supply system 31 and the heat exchange plate 1, but also improve the heat transfer efficiency between the substrate 311 and the heat exchange plate 1, thereby further enhancing the heat dissipation efficiency of the vehicle-mounted power supply system 31 and improving the reliability of the vehicle-mounted power supply system 31.

[0060] When replacing the vehicle-mounted power supply system 31, the old vehicle-mounted power supply system 31 can be directly separated from the heat exchange plate 1. Then, apply a thermally conductive adhesive to the new vehicle-mounted power supply system 31 and bond the new vehicle power supply system 31 to the heat exchange plate 1 using the thermally conductive adhesive.

[0061] Optionally, as Figure 2 shown, the projection of the substrate 311 on the heat exchange plate 1 is located inside the heat exchange plate 1.

[0062] For example, the projection of the substrate 311 on the upper surface of the heat exchange plate 1 is located inside the upper surface of the heat exchange plate 1, enabling all parts of the lower surface of the substrate 311 to be in contact with the heat exchange plate 1.

[0063] Thereby, the contact area between the substrate 311 and the heat exchange plate 1 is relatively large, which is beneficial to further improving the heat dissipation efficiency of the vehicle-mounted power supply system 31 and enhancing the reliability of the vehicle-mounted power supply system 31.

[0064] In some other embodiments, as Figures 3 to 6 shown, the heat exchange plate 1 is disposed in the accommodation cavity and the heat exchange plate 1 intersects with the bottom plate 4. For example, the bottom plate 4 is arranged perpendicular to the up-down direction, and the heat exchange plate 1 is arranged parallel to the up-down direction. The sides of at least one battery cell 2 and the sides of the internal system 3 are both attached to the surface of the same heat exchange plate 1. Among them, the sides of the battery cell 2 and the sides of the internal system 3 can be attached to the same surface of the heat exchange plate 1 or to two different surfaces of the same heat exchange plate 1.

[0065] For example, the side of the battery cell 2 is the cell side 202, the side of the internal system 3 is the system side 302, and both the cell side 202 and the system side 302 are attached to the surface of the same heat exchange plate 1.

[0066] By attaching the side surfaces of the battery cell 2 and the internal system 3 to the surface of the same heat exchange plate 1, it is convenient for the battery cell 2 and the internal system 3 to be attached to the same heat exchange plate 1, thereby facilitating the arrangement of the internal system 3 in the accommodation cavity.

[0067] Optionally, a potting cavity is formed among the box body, the battery cell 2 and the internal system 3, and potting glue is filled in the potting cavity. Among them, the potting glue can be foaming glue or silicone glue, etc.

[0068] By filling potting glue in the potting cavity, not only can the internal system 3 be fixed in the accommodation cavity, but also the battery cell 2 and the internal system 3 can be indirectly in contact with the heat exchange plate 1 through the potting glue, thereby transferring the heat of the battery cell 2 and the internal system 3 to the heat exchange plate 1, increasing the contact area between the battery cell 2 and the internal system 3 and the heat exchange plate 1, which is beneficial to improving the heat dissipation efficiency of the battery cell 2 and the internal system 3 and enhancing the reliability of the battery cell 2 and the internal system 3.

[0069] In some other embodiments, the bottom plate 4 forms the heat exchange plate 1, and the heat exchange plate 1 is arranged in the accommodation cavity. Among them, the heat exchange plate 1 in the accommodation cavity is perpendicular to the bottom plate 4.

[0070] Thus, the bottom of the battery cell 2 and the internal system 3 is cooled and dissipated by using the bottom plate 4, and the sides of the battery cell 2 and the internal system 3 are cooled and dissipated by using the heat exchange plate 1 in the accommodation cavity.

[0071] Optionally, as Figure 3 shown, the bottom surface of the battery cell 2 is flush with the bottom surface of the internal system 3. The top surface of the battery cell 2 is flush with the top surface of the internal system 3.

[0072] For example, as Figure 3 shown, the battery cell bottom surface 203 is flush with the system bottom surface 303, the top surface of the battery cell 2 is the battery cell top surface 201, the top surface of the internal system 3 is the system top surface 301, and the battery cell top surface 201 is flush with the system top surface 301. As an example, the lower surface of the battery cell 2 is flush with the lower surface of the internal system 3, and the upper surface of the battery cell 2 is flush with the lower surface of the internal system 3.

[0073] By setting the bottom surface of the battery cell 2 to be flush with the bottom surface of the internal system 3 and the top surface of the battery cell 2 to be flush with the top surface of the internal system 3, the dimensions occupied by the battery cell 2 and the internal system 3 in the height direction of the box body are the same. Avoiding the increase in the height of the box body caused by arranging the internal system 3 in the accommodation cavity is beneficial to reducing the volume of the battery pack.

[0074] When specifically designing the internal system 3, the design height of the internal system 3 is limited by the height of the battery cell 2, so that the battery pack can accommodate the internal system 3 and be arranged side by side with the battery cell 2 without increasing the height.

[0075] Optionally, as shown in Figure 2 , Figure 4 and Figure 6 , the internal system 3 and multiple battery cells 2 form multiple heat generating components 21, and the multiple heat generating components 21 are arranged at intervals in the first direction. The first direction intersects with the height direction of the box body. Among them, as shown in Figure 2 and Figure 6 , the internal system 3 can be a heat generating component 21 alone. As shown in Figure 4 , the internal system 3 can also form a heat generating component 21 together with at least one battery cell 2.

[0076] By forming multiple heat generating components 21 from the internal system 3 and multiple battery cells 2, the layout in the accommodation cavity is neater, facilitating the assembly of the internal system 3 and multiple battery cells 2, which is beneficial to improving the assembly efficiency of the battery pack and further reducing the cost of the battery pack.

[0077] To make the technical solution of the present disclosure easier to understand, the technical solution of the present disclosure will be further described below by taking the first direction as being consistent with the front-rear direction as an example. Among them, the front-rear direction is as shown in Figure 2 , Figure 4 and Figure 6 .

[0078] For example, as shown in Figure 2 , Figure 4 and Figure 6 , the number of heat generating components 21 is four, and the four heat generating components 21 are arranged at intervals in the front-rear direction.

[0079] Optionally, as shown in Figure 4 and Figure 6 , a heat exchange plate 1 is arranged in the accommodation cavity. The number of heat exchange plates 1 is multiple, and the multiple heat exchange plates 1 are arranged at intervals in the first direction, and the heat exchange plates 1 and the heat generating components 21 are arranged alternately in the first direction. The heat generating component 21 is in contact with the adjacent heat exchange plate 1.

[0080] By bringing the heat generating component 21 into contact with the adjacent heat exchange plate 1, the heat of the heat generating component 21 can be transferred to the heat exchange plate 1 to achieve cooling and heat dissipation of the heat generating component 21. For example, if a heat exchange plate 1 is provided on the front side of the heat generating component 21, the battery cell 2 and / or the front surface of the internal system in the heat generating component 21 is in contact with the rear surface of the heat exchange plate 1.

[0081] By arranging the heat exchange plates 1 and the heat generating components 21 alternately in the first direction, the layout of the heat exchange plates 1 and the heat generating components 21 is neater, facilitating the assembly of the internal system 3, multiple battery cells 2 and the heat exchange plates 1, which is beneficial to further improving the assembly efficiency of the battery pack and further reducing the cost of the battery pack.

[0082] In some embodiments, as shown in Figure 4As shown, a part of the heating component 21 is the first component 211. The first component 211 is composed of an internal system 3 and at least one battery cell 2. The internal system 3 and the battery cells 2 in the same first component 211 are arranged at intervals in the second direction. Another part of the heating component 21 is the second component 212. The second component 212 is composed of multiple battery cells 2. The multiple battery cells 2 in the same second component 212 are arranged at intervals in the second direction. Among them, the second direction intersects both the height direction and the first direction of the box body.

[0083] Thus, the internal system 3 can be regarded as a "battery cell model", integrated with multiple battery cells 2 in the same accommodating cavity, which facilitates the layout and installation of the internal system 3 and the battery cells 2 in the accommodating cavity, is conducive to further improving the assembly efficiency of the battery pack, and further reducing the cost of the battery pack.

[0084] To make the technical solution of the present disclosure easier to understand, the following takes the second direction being consistent with the left - right direction as an example to further describe the technical solution of the present disclosure. Among them, the left - right direction is as Figures 1 to 6 shown.

[0085] For example, the internal system 3 and the battery cells 2 in the same first component 211 are arranged at intervals in the left - right direction, and the multiple battery cells 2 in the same second component 212 are arranged at intervals in the left - right direction.

[0086] In some other embodiments, as Figure 2 and Figure 6 shown, a part of the heating component 21 is the first component 211. The first component 211 is composed of the internal system 3. Another part of the heating component 21 is the second component 212. The second component 212 is composed of multiple battery cells 2. The multiple battery cells 2 in the same second component 212 are arranged at intervals in the second direction.

[0087] Thus, the internal system 3 can be regarded as a "battery cell model", integrated with multiple battery cells 2 in the same accommodating cavity, which facilitates the layout and installation of the internal system 3 and the battery cells 2 in the accommodating cavity, is conducive to further improving the assembly efficiency of the battery pack, and further reducing the cost of the battery pack.

[0088] Optionally, as Figure 5 and Figure 6 shown, the vehicle - mounted power supply system 31 is the internal system 3. The vehicle - mounted power supply system 31 includes an on - board charger (OBC) 313 and a DC - DC converter (DCDC) 314. The on - board charger 313 and the DC - DC converter 314 form a first component 211. The on - board charger 313 and the DC - DC converter 314 are arranged at intervals in the second direction.

[0089] By making the on-vehicle charger 313 and the DC converter 314 into two separate modules respectively, it is convenient to arrange the on-vehicle charger 313 and the DC converter 314 according to requirements. Thus, it is convenient to arrange and install the on-vehicle power supply system 31 in the accommodation cavity, which is beneficial to further improving the assembly efficiency of the battery pack and further reducing the cost of the battery pack.

[0090] In addition, since the power of the DC converter 314 is related to the vehicle model configuration, etc. For example, commonly there are 2kW, 2.5kW, 3kW, 3.5kW, etc.; the DC converter 314 can be made into a 0.5kW DCDC module. By paralleling different numbers of DCDC modules, the flexible change of the power requirement of the DC converter 314 can be achieved without the need to re-develop the DC converter 314 for each vehicle model. Thus, the development cost of the DC converter 314 can be reduced, and further the development cost of the on-vehicle power supply system 31 can be reduced.

[0091] Optionally, as Figure 1 and Figure 2 shown, both the on-vehicle power supply system 31 and the battery power distribution system 32 are internal systems 3. The on-vehicle power supply system 31 and the battery power distribution system 32 form a first component 211. The on-vehicle power supply system 31 and the battery power distribution system 32 are arranged at intervals along the second direction.

[0092] It can be understood that the sizes of the on-vehicle power supply system 31 and the battery power distribution system 32 are generally larger than the size of the battery cell 2, which makes the occupied size of the on-vehicle power supply system 31 and the battery power distribution system 32 in the first direction larger, that is, the occupied size of the first component 211 in the first direction is larger.

[0093] By forming the on-vehicle power supply system 31 and the battery power distribution system 32 into a first component 211, the number of the first components 211 can be reduced, thereby reducing the occupied space of the first component 211 in the accommodation cavity, which is beneficial to further reducing the volume of the battery pack and the cost of the battery pack.

[0094] In the related art, the on-vehicle power supply system and the battery power distribution system are two independent components. The high-voltage DC output terminal of the on-vehicle power supply system needs to be connected to the battery power distribution system and is connected to the direct current of the battery pack through the battery power distribution system. It is necessary to install the on-vehicle power supply system and the battery power distribution system separately, resulting in a relatively high overall assembly cost of the battery pack.

[0095] Optionally, as Figure 7 shown, both the on-vehicle power supply system 31 and the battery power distribution system 32 are internal systems 3. A system housing 33 is provided in the accommodation cavity, and both the on-vehicle power supply system 31 and the battery power distribution system 32 are arranged inside the system housing 33.

[0096] By arranging the vehicle-mounted power supply system 31 and the battery power distribution system 32 within the same system housing 33, the vehicle-mounted power supply system 31 and the battery power distribution system 32 can be integrated into one unit. Thus, by simply fixing the system housing 33 within the accommodating cavity, the installation of both the vehicle-mounted power supply system 31 and the battery power distribution system 32 can be achieved simultaneously, which is beneficial for further improving the assembly efficiency of the battery pack and reducing the assembly cost of the battery pack.

[0097] In the related art, when the vehicle-mounted power supply system and the battery power distribution system are independently arranged, the electrical connection components between the vehicle-mounted power supply system and the battery power distribution system are exposed externally, and it is necessary to consider insulating the electrical connection components between the vehicle-mounted power supply system and the battery power distribution system. Usually, electrical connectors are respectively provided on the vehicle-mounted power supply system and the battery power distribution system, and the vehicle-mounted power supply system and the battery power distribution system are electrically connected through a wire harness with an insulating layer. The cost of the electrical connectors is relatively high, resulting in a relatively high cost of the battery pack.

[0098] Optionally, the vehicle-mounted power supply system 31 and the battery power distribution system 32 are electrically connected through a connection bar. Among them, the connection bar can be a copper bar, an aluminum bar, etc.

[0099] It can be understood that when both the vehicle-mounted power supply system 31 and the battery power distribution system 32 are arranged within the system housing 33, the electrical connection between the vehicle-mounted power supply system 31 and the battery power distribution system 32 is completed within the system housing 33, and it is not necessary to insulate the electrical connection components between the vehicle-mounted power supply system 31 and the battery power distribution system 32. This enables the electrical connection between the vehicle-mounted power supply system 31 and the battery power distribution system 32 to be achieved through the connection bar.

[0100] Thus, the arrangement of electrical connectors on the vehicle-mounted power supply system 31 and the battery power distribution system 32 can be omitted, thereby further reducing the cost of the battery pack.

[0101] Optionally, both the vehicle-mounted power supply system 31 and the battery power distribution system 32 include an outer shell, and the system housing 33 forms the outer shell of the vehicle-mounted power supply system 31, and the system housing 33 forms the outer shell of the battery power distribution system 32.

[0102] For example, the system housing 33 is a die-cast part. The system housing 33 is used both as the outer shell of the vehicle-mounted power supply system 31 and as the outer shell of the battery power distribution system 32. That is to say, the electrical components of the vehicle-mounted power supply system and the battery power distribution system in the prior art are directly installed within the system housing 33, such that the vehicle-mounted power supply system 31 and the battery power distribution system 32 form an integral whole. In short, the vehicle-mounted power supply system 31 and the battery power distribution system 32 share the same housing.

[0103] By sharing the same housing for the vehicle-mounted power supply system 31 and the battery power distribution system 32, it is beneficial to simplify the overall structure composed of the vehicle-mounted power supply system 31 and the battery power distribution system 32, thereby further reducing the cost of the battery pack.

[0104] Optionally, as Figure 7 shown, the system housing 33 is provided with a heat exchange flow channel 331, and a flow channel inlet 332 and a flow channel outlet 333 that communicate with the heat exchange flow channel 331.

[0105] During specific use, the heat exchange medium can be introduced into the heat exchange flow channel 331 through the flow channel inlet 332. After the heat exchange medium exchanges heat with the vehicle-mounted power supply system 31 and / or the battery power distribution system 32 in the heat exchange flow channel 331, it then flows out through the flow channel outlet 333. Among them, the heat exchange medium can be a heating medium or a cooling medium. When the heat exchange medium is a heating medium, the temperature of the heating medium is higher than that of the internal system 3, and the internal system 3 can be heated by using the heating medium; when the heat exchange medium is a cooling medium, the temperature of the cooling medium is lower than that of the internal system 3, and the internal system 3 can be cooled and dissipated heat by using the cooling medium.

[0106] For the convenience of description, the following takes the heat exchange medium as a cooling medium as an example for illustration. After the heat exchange medium flows through the heat exchange channel 33, the vehicle-mounted power supply system 31 and / or the battery power distribution system 32 can be cooled and dissipated heat. Among them, the heat exchange medium can be a liquid or a gas.

[0107] In the case where the internal system 3 can be cooled and dissipated heat through the heat exchange plate 1, by setting the heat exchange flow channel 331 in the system housing 33 to cool and dissipate heat from the internal system 3, the heat dissipation efficiency of the internal system 3 can be further improved, thereby further improving the reliability of the internal system 3.

[0108] In the related art, the battery power distribution system is usually equipped with a water-cooled heat dissipation structure. When the charging and discharging power of the battery pack is relatively large, the vehicle-mounted power supply system also needs to be provided with a water-cooled heat dissipation structure. Usually, the battery power distribution system and the vehicle-mounted power supply system are connected through a water nozzle and a water pipe, so that the coolant of the battery power distribution system can enter the vehicle-mounted power supply system. The setting of the water nozzle and the water pipe between the battery power distribution system and the vehicle-mounted power supply system not only increases the structural complexity of the system, but also increases the cost of the system.

[0109] Optionally, as Figure 7 shown, a part of the heat exchange flow channel 331 is provided in the vehicle-mounted power supply system 31, and another part of the heat exchange flow channel 331 is provided in the battery power distribution system 32.

[0110] By arranging a part of the heat exchange flow channel 331 inside the vehicle-mounted power supply system 31, the heat exchange medium flowing through the heat exchange flow channel 331 can take away the heat of the vehicle-mounted power supply system 31, realizing the cooling and heat dissipation of the vehicle-mounted power supply system 31; by arranging another part of the heat exchange flow channel 331 inside the battery power distribution system 32, the heat exchange medium flowing through the heat exchange flow channel 331 can take away the heat of the battery power distribution system 32, realizing the cooling and heat dissipation of the battery power distribution system 32.

[0111] Thus, the vehicle-mounted power supply system 31 and the battery power distribution system 32 share the same cooling system, thereby avoiding the setting of water nozzles and water pipes between the battery power distribution system and the vehicle-mounted power supply system, which is beneficial to further reducing the number of components of the battery pack, reducing the volume of the battery pack, and lowering the cost of the battery pack.

[0112] Optionally, as Figure 7 shown, the heat exchange flow channel 331 includes a first flow channel section 3311 and a second flow channel section 3312 that are connected and communicate with each other. The flow channel inlet 332 is arranged on the first flow channel section 3311, and the flow channel outlet 333 is arranged on the second flow channel section 3312. A part of the first flow channel section 3311 is arranged inside the vehicle-mounted power supply system 31, and another part of the first flow channel section 3311 is arranged inside the battery power distribution system 32. A part of the second flow channel section 3312 is arranged inside the vehicle-mounted power supply system 31, and another part of the second flow channel section 3312 is arranged inside the battery power distribution system 32.

[0113] It can be understood that after the heat exchange medium enters the heat exchange flow channel 331 from the flow channel inlet 332, it first flows through the first flow channel section 3311, then through the second flow channel section 3312, and then flows out through the flow channel outlet 333. Thus, the temperature of the heat exchange medium in the first flow channel section 3311 is different from the temperature of the heat exchange medium in the second flow channel section 3312, making the heat exchange efficiency at the first flow channel section 3311 and the second flow channel section 3312 also different.

[0114] Through the above design of the first flow channel section 3311 and the second flow channel section 3312, both the vehicle-mounted power supply system 31 and the battery power distribution system 32 can exchange heat with the heat exchange medium in the first flow channel section 3311, and both the vehicle-mounted power supply system 31 and the battery power distribution system 32 can exchange heat with the heat exchange medium in the second flow channel section 3312. It is beneficial to improve the heat exchange uniformity between the vehicle-mounted power supply system 31 and the battery power distribution system 32 and the heat exchange medium in the heat exchange flow channel 331, avoid a large temperature difference between the vehicle-mounted power supply system 31 and the battery power distribution system 32, and realize the uniform cooling of the vehicle-mounted power supply system 31 and the battery power distribution system 32.

[0115] Optionally, as Figure 7As shown, the heat exchange flow channel 331 is U-shaped. The extending directions of the first flow channel section 3311 and the second flow channel section 3312 are the same. The heat exchange flow channel 331 further includes a third flow channel section 3313. Two ends of the third flow channel section 3313 are respectively communicated with the first flow channel section 3311 and the second flow channel section 3312. The extending direction of the third flow channel section 3313 intersects with that of the first flow channel section 3311. The vehicle-mounted power supply system 31 is arranged on one side of the battery power distribution system 32 in the extending direction of the first flow channel section 3311.

[0116] For example, as Figure 7 shown, both the first flow channel section 3311 and the second flow channel section 3312 extend along the left-right direction, and the vehicle-mounted power supply system 31 is arranged on the right side of the battery power distribution system 32. The heat exchange medium enters the first flow channel section 3311 through the flow channel inlet 332 and flows through the battery power distribution system 32 and the vehicle-mounted power supply system 31 in sequence along the left-to-right direction; then it flows through the third flow channel section 3313; and then enters the second flow channel section 3312 and flows through the vehicle-mounted power supply system 31 and the battery power distribution system 32 in sequence along the right-to-left direction.

[0117] It can be understood that within the heat exchange flow channel 331, along the extending direction of the heat exchange flow channel 331, the temperature of the heat exchange medium closer to the flow channel inlet 332 is the lowest, the heat exchange efficiency with the internal system 3 is higher, and it is more conducive to realizing the cooling and heat dissipation of the internal system 3; while the temperature of the heat exchange medium closer to the flow channel outlet 333 is higher, the heat exchange efficiency with the internal system 3 is lower, and it is less conducive to realizing the cooling and heat dissipation of the internal system 3.

[0118] The above designs of the first flow channel section 3311, the second flow channel section 3312, the third flow channel section 3313, the vehicle-mounted power supply system 31, and the battery power distribution system 32 enable the cooling medium closest to the flow channel inlet 332 and the cooling medium closest to the flow channel outlet 333 to both flow through one of the vehicle-mounted power supply system 31 and the battery power distribution system 32, and the cooling medium in other parts flows through the other of the vehicle-mounted power supply system 31 and the battery power distribution system 32. That is, the cooling media with higher and lower heat exchange efficiencies both flow through the same internal system 3 (such as the battery power distribution system 32), while the cooling medium with an intermediate heat exchange efficiency flows through the same internal system 3 (such as the vehicle-mounted power supply system 31). Thus, the temperature difference between the vehicle-mounted power supply system 31 and the battery power distribution system 32 can be further reduced, and uniform cooling of the vehicle-mounted power supply system 31 and the battery power distribution system 32 can be achieved.

[0119] Optionally, a first joint is provided on the outer side of the box body. The first joint includes a first inlet and a first outlet. The first inlet is connected to the flow channel inlet 332, and the first outlet is connected to the flow channel outlet 333.

[0120] For example, as Figure 7As shown, one end of the first connecting pipe 34 is connected to the flow channel inlet 332, and the other end of the first connecting pipe 34 is connected to the first inlet, realizing the connection between the first inlet and the flow channel inlet 332; one end of the second connecting pipe 35 is connected to the flow channel outlet 333, and the other end of the second connecting pipe 35 is connected to the first outlet, realizing the connection between the first outlet and the flow channel outlet 333.

[0121] By providing a first joint on the outer side of the box body, it is possible to realize the connection between the heat exchange flow channel 331 and the heat exchange medium through pipelines on the outer side of the box body. Thus, it is convenient to realize the connection between the heat exchange flow channel 331 and the heat exchange medium, facilitating the installation of the battery pack.

[0122] Optionally, the heat exchange plate 1 has a fluid channel and a fluid inlet and a fluid outlet communicating with the fluid channel. As Figure 2 shown, the box body is provided with a second joint 6. The second joint 6 includes a second inlet 61 and a second outlet 62. The second inlet 61 is connected to the fluid inlet, and the second outlet 62 is connected to the fluid outlet. Among them, the second inlet 61 is in parallel with the first inlet, and the second outlet 62 is in parallel with the second outlet.

[0123] Thus, the heat exchange medium can enter the heat exchange plate 1 through the fluid inlet, then flow along the fluid channel of the heat exchange plate 1, and finally flow out of the heat exchange plate 1 through the fluid, so as to take out the heat generated by the battery cell 2 and the internal system 3 from the battery pack. This is beneficial to further improve the heat dissipation efficiency of the battery cell 2 and the internal system 3 and improve the reliability of the battery cell 2 and the internal system 3. In addition, the second inlet 61 is in parallel with the first inlet, and the second outlet 62 is in parallel with the second outlet, so that the fluid channel and the heat exchange flow channel 331 are in parallel, enabling the heat exchange plate 1 and the heat exchange flow channel 331 to share the same heat exchange medium, further facilitating the installation of the battery pack.

[0124] The battery pack of the embodiment of the present disclosure improves the space utilization rate of the battery pack, saves components such as faucets, water pipes, and heat exchange plates, simplifies the structure of the battery pack while reducing the cost and weight of the battery pack. It should be noted that for the convenience of replacing and repairing the vehicle-mounted power supply system 31 and the battery power distribution system 32, the heat exchange flow channel 331 may not be provided in the system housing 33.

[0125] The vehicle of the embodiment of the present disclosure includes the battery pack described in any one of the above embodiments. Among them, the vehicle can be a pure electric vehicle or a hybrid electric vehicle.

[0126] Due to the advantages of small volume and low cost of the battery pack of the embodiment of the present disclosure, the vehicle of the embodiment of the present disclosure has the advantages of long cruising range and low cost.

[0127] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Variations, modifications, substitutions, and alterations made by those of ordinary skill in the art to the above embodiments are all within the scope of protection of the present disclosure.

Claims

1. A battery pack, characterized in that, Comprising: A box body, the box body having a containing cavity, a part of the box body forming a heat exchange plate and / or the containing cavity being provided with a heat exchange plate; A plurality of battery cells, the battery cells being arranged in the containing cavity; A vehicle-mounted power supply system and a battery power distribution system, at least one of the vehicle-mounted power supply system and the battery power distribution system being an internal system, the internal system being arranged in the containing cavity; Wherein, the internal system and at least one of the battery cells share the same heat exchange plate.

2. The battery pack according to claim 1, wherein The box body includes a bottom plate, a cover plate, and an annular frame, the bottom of the frame being connected to the bottom plate, the top of the frame being connected to the cover plate, and the bottom plate, the frame, and the cover plate enclosing the containing cavity; The bottom plate forms the heat exchange plate, and the bottom surfaces of the battery cells and the bottom surface of the internal system are both attached to the top surface of the bottom plate.

3. The battery pack according to claim 2, characterized in that, The vehicle-mounted power supply system is the internal system, the vehicle-mounted power supply system including a substrate and a power module, the substrate being attached to the heat exchange plate, and the power module being arranged on a side of the substrate away from the heat exchange plate and connected to the substrate.

4. The battery pack according to claim 3, characterized in that, The substrate and the heat exchange plate are bonded by a heat-conducting adhesive; and / or The projection of the substrate on the heat exchange plate is located inside the heat exchange plate.

5. The battery pack according to claim 1, characterized in that, The box body includes a bottom plate, a cover plate, and an annular frame, the bottom of the frame being connected to the bottom plate, the top of the frame being connected to the cover plate, and the bottom plate, the frame, and the cover plate enclosing the containing cavity; The heat exchange plate is arranged in the containing cavity, and the heat exchange plate intersects with the bottom plate, and the side surfaces of at least one of the battery cells and the side surface of the internal system are both attached to the surface of the same heat exchange plate.

6. The battery pack according to claim 5, characterized in that A potting cavity is formed among the box body, the battery cells, and the internal system, and the potting cavity is filled with potting glue.

7. The battery pack according to any one of claims 2-6, characterized in that, The bottom surfaces of the battery cells are flush with the bottom surface of the internal system; The top surfaces of the battery cells are flush with the top surface of the internal system.

8. The battery pack according to claim 1, wherein, The internal system and the plurality of battery cells form a plurality of heat-generating components, and the plurality of heat-generating components are arranged at intervals in a first direction, wherein the first direction intersects with the height direction of the box body.

9. The battery pack according to claim 8, wherein, The heat exchange plate is arranged in the containing cavity, the number of the heat exchange plates is multiple, the multiple heat exchange plates are arranged at intervals in the first direction, and the heat exchange plates and the heat-generating components are arranged alternately in the first direction, and the heat-generating components are in contact with the adjacent heat exchange plates.

10. The battery pack according to claim 8, characterized in that, A part of the heat-generating components is a first component, the first component being composed of the internal system, or the first component being composed of the internal system and at least one of the battery cells, and the internal system and the battery cells in the same first component are arranged at intervals in a second direction; Another part of the heat-generating components is a second component, the second component being composed of a plurality of battery cells, and the plurality of battery cells in the same second component are arranged at intervals in the second direction; Wherein, the second direction intersects with both the height direction of the box body and the first direction.

11. The battery pack according to claim 10, characterized in that, The vehicle-mounted power supply system is the internal system. The vehicle-mounted power supply system includes a vehicle-mounted charger and a DC-DC converter. The vehicle-mounted charger and the DC-DC converter form a first component, and the vehicle-mounted charger and the DC-DC converter are arranged at intervals along the second direction; and / or The vehicle-mounted power supply system and the battery power distribution system are both the internal system. The vehicle-mounted power supply system and the battery power distribution system form a first component, and the vehicle-mounted power supply system and the battery power distribution system are arranged at intervals along the second direction.

12. The battery pack according to claim 1, characterized in that, The vehicle-mounted power supply system and the battery power distribution system are both the internal system. A system housing is provided in the accommodating cavity, and the vehicle-mounted power supply system and the battery power distribution system are both arranged in the system housing.

13. The battery pack according to claim 12, wherein, The system housing is provided with a heat exchange flow channel and a flow channel inlet and a flow channel outlet communicated with the heat exchange flow channel.

14. The battery pack according to claim 13, wherein, A part of the heat exchange flow channel is arranged in the vehicle-mounted power supply system, and another part of the heat exchange flow channel is arranged in the battery power distribution system.

15. The battery pack according to claim 14, characterized in that, The heat exchange flow channel includes a first flow channel section and a second flow channel section which are communicated with each other. The flow channel inlet is arranged on the first flow channel section, and the flow channel outlet is arranged on the second flow channel section; A part of the first flow channel section is arranged in the vehicle-mounted power supply system, and another part of the first flow channel section is arranged in the battery power distribution system. A part of the second flow channel section is arranged in the vehicle-mounted power supply system, and another part of the second flow channel section is arranged in the battery power distribution system.

16. The battery pack according to claim 15, characterized in that, The heat exchange flow channel is U-shaped. The extending directions of the first flow channel section and the second flow channel section are the same. The heat exchange flow channel further includes a third flow channel section. The two ends of the third flow channel section are respectively communicated with the first flow channel section and the second flow channel section, and the third flow channel section intersects with the extending direction of the first flow channel section; The vehicle-mounted power supply system is arranged on one side of the battery power distribution system in the extending direction of the first flow channel section.

17. The battery pack according to claim 13, characterized in that, A first connector is provided on the outer side of the box body. The first connector includes a first inlet and a first outlet. The first inlet is connected with the flow channel inlet, and the first outlet is connected with the flow channel outlet.

18. The battery pack according to claim 17, characterized in that, The heat exchange plate has a fluid channel and a fluid inlet and a fluid outlet communicated with the fluid channel; A second connector is provided on the outer side of the box body. The second connector includes a second inlet and a second outlet. The second inlet is connected with the fluid inlet, and the second outlet is connected with the fluid outlet; Wherein, the second inlet is in parallel connection with the first inlet, and the second outlet is in parallel connection with the second outlet.

19. The battery pack according to claim 12, characterized in that, The vehicle-mounted power supply system and the battery power distribution system are electrically connected through a connecting busbar; and / or The vehicle-mounted power supply system and the battery power distribution system both include an outer shell. The system housing forms the outer shell of the vehicle-mounted power supply system, and the system housing forms the outer shell of the battery power distribution system.

20. A vehicle, characterized in that, Including the battery pack according to any one of claims 1-19.

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