Battery pack and electric vehicle comprising same

Abstract

The invention provides a battery pack and an electric vehicle comprising the same, the battery pack comprises a battery pack body and a protruding chamber, the protruding chamber is arranged on the side edge, facing a vehicle beam of the electric vehicle, of the battery pack body, the battery pack is provided with a battery end connector, and at least part of the battery end connector is arranged in the protruding chamber; wherein the battery end connector comprises a battery end electric connector and a wire harness thereof and / or a battery end liquid cooling connector and a connecting pipe thereof. The protruding cavity can provide protection for the battery end connector, the battery end connector is prevented from being affected by the outside, and the usable scene of the electric vehicle is increased; on the other hand, the side edge is in electric connection and liquid cooling connection with the electric vehicle, so that a connection path during electric connection and liquid cooling connection of the battery pack and the electric vehicle is more adaptive to a locking path during locking of the battery pack in the electric vehicle, the mounting efficiency is improved, a mounting space does not need to be reserved in the battery pack body, the structural compactness is improved, and the cost is reduced. The connector is prevented from occupying the cell space to influence the battery pack capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a battery pack and an electric vehicle comprising the same. Background Art

[0002] In recent years, new energy vehicles have developed rapidly. Electric vehicles that rely on batteries as driving energy have the advantages of zero emissions and low noise. As the market share and usage frequency of electric vehicles are increasing, electric commercial vehicles among electric vehicles, such as electric heavy trucks and electric light trucks, are also beginning to appear in their respective application scenarios.

[0003] In existing technology, battery terminal connectors are typically mounted directly on the battery pack itself. This not only affects structural compactness and requires a larger battery pack footprint, but the connector and its connected wiring harness also occupy space within the battery cells, impacting battery pack capacity. Furthermore, existing battery terminal connectors lack protective structures, making their functionality and performance susceptible to external influences. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a battery pack and an electric vehicle comprising the same.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A battery pack is used in an electric vehicle, the battery pack comprising a battery pack body and a protruding cavity, the protruding cavity being arranged on the side of the battery pack body facing the beam of the electric vehicle, the battery pack being provided with a battery terminal connector, the battery terminal connector being at least partially arranged in the protruding cavity; wherein the battery terminal connector comprises a battery terminal electrical connector and its wiring harness and / or a battery terminal liquid cooling connector and its connecting tube.

[0007] In this solution, a protruding cavity is provided on the side of the battery pack body facing the beam of the electric vehicle, and the battery end connector is provided in the protruding cavity. On the one hand, the protruding cavity can be used to protect the battery end connector, which can prevent the battery end connector from being affected by the outside world, which is beneficial to increasing the usable scenarios of the electric vehicle; on the other hand, the battery end connector is located on the side of the battery pack body, so that the battery pack can use the side to be electrically connected and liquid-cooled to the electric vehicle, thereby making the connection path when the battery pack is electrically connected and liquid-cooled to the electric vehicle more compatible with the locking path when the battery pack is locked to the electric vehicle, which is beneficial to improving installation efficiency, and there is no need to reserve installation space in the battery pack body, which is beneficial to improving the compactness of the structure and avoiding the connector occupying the battery cell space and affecting the battery pack capacity.

[0008] Specifically, the battery pack is locked to the electric vehicle by first moving the battery pack vertically and then horizontally. In this solution, the battery pack is connected to the electric vehicle via horizontal movement for both electrical and liquid cooling. This connection path aligns with the last step of the battery pack locking path, allowing the battery pack to be electrically and liquid-cooled to the electric vehicle upon completion of the last step of locking the battery pack. If the battery terminal connector is located at the top or bottom of the battery pack body, the battery pack must be locked first and then moved vertically to achieve both electrical and liquid cooling connections.

[0009] Preferably, in the height direction of the battery pack, the size of the protruding cavity is smaller than the size of the battery pack body, so as to form a first avoidance space above or below the protruding cavity, and the first avoidance space is used to accommodate the vehicle beam.

[0010] In this solution, the above-mentioned structural form is adopted to rationally utilize the free space on the battery pack to place the beam of the electric vehicle, which is beneficial to improving the space utilization rate of the electric vehicle chassis and further beneficial to reducing the size of the electric vehicle.

[0011] Preferably, the battery pack body includes a first battery cell and a second battery cell, and the first battery cell and the second battery cell are stacked along the height direction of the battery pack.

[0012] In this solution, stacking two battery cells can, on the one hand, ensure the battery capacity of the battery pack and the endurance of the electric vehicle. On the other hand, compared with arranging the battery cells in the horizontal direction, stacking them in the height direction can reduce the horizontal size of the battery pack. When the battery pack is arranged on the side of the beam of the electric vehicle, it is beneficial to ensure that a larger capacity battery pack can be placed without increasing the size of the electric vehicle.

[0013] Preferably, the first battery cell and the second battery cell both include a first end portion, and the first end portions of the first battery cell and the second battery cell face the same direction;

[0014] The wiring harness is electrically connected between the first end of the first battery cell, the first end of the second battery cell and the battery end electrical connector;

[0015] And / or, the connecting pipe is connected between at least one of the first end portions and the battery terminal liquid cooling connector.

[0016] In this solution, the wiring harnesses for both the first and second cells are connected to the same side of the battery pack, and the connecting tube is also connected to the same side as the wiring harness. This, on the one hand, only requires space on one side of the battery pack, which helps ensure that the battery pack size is within an appropriate range. On the other hand, the centralized arrangement of multiple wiring harnesses and connecting tubes allows for localized protection within the protruding cavity, which helps reduce the size of the protruding cavity and, in turn, prevents interference between the protruding cavity and other functional components of the electric vehicle, while also ensuring a clear distribution of functional areas.

[0017] Preferably, the wiring harness extends from the first end toward a first position, and the first position corresponds to a position of the protruding cavity in a height direction of the battery pack;

[0018] And / or, the connecting tube extends from the first end toward a second position, and the second position corresponds to a position of the protruding cavity in a height direction of the battery pack.

[0019] In this solution, the wiring harness for both the first and second battery cells is routed out at a first location, so that the wiring harness's lead-out location corresponds to the height of the protruding cavity. This ensures that the wiring harness is completely within the protruding cavity when connected to the battery-side electrical connector, facilitating the protruding cavity's protective effect on the wiring harness. When the connecting tube is connected to the battery-side liquid cooling connector, the connecting tube is completely within the protruding cavity, facilitating the protruding cavity's protective effect on the connecting tube.

[0020] Preferably, the battery pack body includes a cell accommodating cavity, at least one of the first cell and the second cell is arranged in the cell accommodating cavity, and there is a gap between the first end and the cavity wall of the cell accommodating cavity, and the gap is at least used to accommodate the wiring harness and / or the connecting tube.

[0021] In this solution, the battery cell accommodating cavity can protect the battery cell on the one hand, and on the other hand, the wiring harness and the connecting tube have a part connected to the battery cell and a part connected to the battery end connector. The connecting tube and the wiring harness are arranged in the battery accommodating cavity, so that the part connected to the battery cell can be protected by the battery cell accommodating cavity, preventing the wiring harness and the connecting tube from being exposed to the outside and causing wear or poor connection.

[0022] Preferably, the battery pack also includes a first mounting bracket provided in the protruding cavity, the first mounting bracket being configured to install the battery-end electrical connector and accommodate the wiring harness, and / or the first mounting bracket being configured to install the battery-end liquid cooling connector and accommodate the connecting tube.

[0023] In this solution, the first mounting bracket is used to mount the battery-side electrical connector and / or battery-side liquid-cooling connector. This helps ensure the secure installation of the battery-side electrical connector and / or battery-side liquid-cooling connector. It also prevents deformation of the battery body due to the weight of the battery-side electrical connector and / or battery-side liquid-cooling connector, thereby protecting the battery cells within the battery body. Furthermore, the first mounting bracket can accommodate the wiring harness and / or connecting tube, further protecting them while aligning the wiring harness and / or connecting tube, preventing interference between the wiring harnesses and improving safety.

[0024] Preferably, the first mounting bracket includes at least a mounting panel and a mounting beam, one end of the mounting beam is connected to the battery pack body, and the other end extends in a direction away from the battery pack body, and the mounting panel is arranged at the end of the mounting beam away from the battery pack body and is used to install the battery end liquid cooling connector and / or the battery end electrical connector.

[0025] In this solution, a mounting panel is set up using an end of the mounting beam away from the battery pack body. The mounting beam can ensure the installation stability of the battery-end electrical connector and the battery-end liquid cooling connector. At the same time, the mounting beam creates a certain distance between the mounting panel and the battery pack body, within which the wiring harness and connecting tube can be accommodated.

[0026] Preferably, the first mounting bracket further includes a mounting longitudinal beam and a mounting vertical beam, both ends of the mounting longitudinal beam and the mounting vertical beam are connected to the mounting cross beam to form a frame structure, and the mounting panel is provided at one end of the frame structure away from the battery pack body.

[0027] In this solution, a frame structure is formed by installing longitudinal beams, installing vertical beams and installing horizontal beams, which is beneficial to further improve the installation stability of the battery-end electrical connector and the battery-end liquid-cooling connector.

[0028] Preferably, the battery pack further includes a wiring harness fixing plate, which is arranged in the first mounting bracket. The first mounting bracket is provided with a connector mounting position, and the wiring harness fixing plate corresponds to the position of the connector mounting position.

[0029] In this solution, the above-mentioned structural form is adopted. On the one hand, the position of the wire harness fixing plate corresponds to the connector installation position. When the wire harness is fixed to the wire harness fixing plate, the wire harness fixing plate can play the role of guiding the wire harness to the connector installation position, which is beneficial to improving installation efficiency and also helps to improve the connection stability between the wire harness and the battery-end connector. On the other hand, the wire harness fixing plate helps to ensure that the wire harness is arranged according to the designed position, especially when the wire harness is close to the battery-end connector, so that the wire harness is restricted by the wire harness fixing plate. This specifically prevents the wire harness near the battery-end connector from being pulled and shifted due to bumps during the driving of the electric vehicle, which helps to ensure the connection stability between the wire harness and the battery-end connector.

[0030] Preferably, the wiring harness fixing plate is inclined, and one end of the wiring harness fixing plate is connected to the battery pack body, and the other end is connected to the first mounting bracket;

[0031] And / or, the wiring harness fixing plate is provided with a plurality of weight-reducing holes.

[0032] In this solution, the inclined harness fixing plate is conveniently arranged to correspond to the connector mounting position on the first mounting bracket. On the other hand, the inclined harness fixing plate can also play a role in strengthening the structural strength, which is conducive to improving the structural stability of the first mounting bracket and thus improving the installation stability of the battery end connector.

[0033] Setting several weight-reducing holes on the wiring harness fixing plate is conducive to achieving the lightweight requirements of the battery pack.

[0034] Preferably, in the length direction of the battery pack, the size of the protruding cavity is smaller than the size of the battery pack body, so as to form a second avoidance space on the side of the protruding cavity, and the second avoidance space is used to accommodate functional parts of the electric vehicle.

[0035] In this solution, the above-mentioned structural form is adopted to rationally utilize the space on the battery pack to avoid and set up other functional components in the electric vehicle. On the one hand, it can prevent other functional components from interfering with the battery pack, which is conducive to ensuring the smooth installation of the battery pack; on the other hand, it is conducive to improving the compactness of the layout of various functional parts inside the electric vehicle, improving space utilization, and thereby reducing the space occupied by the electric vehicle.

[0036] An electric vehicle comprises the battery pack described above.

[0037] In this solution, the aforementioned battery pack is applied to an electric vehicle, allowing both sides of the vehicle's beam to be used to house the battery pack. This not only allows for rational utilization of the space on both sides of the beam, but also meets the vehicle's range requirements. Furthermore, electric vehicles using this battery pack can protect the battery connector from external influences, allowing for a wide range of applications and improving battery pack installation efficiency.

[0038] The positive progress effect of the present invention is:

[0039] The present invention provides a protruding cavity on the side of the battery pack body facing the beam of the electric vehicle, and arranges the battery end connector in the protruding cavity. On the one hand, the protruding cavity can be used to protect the battery end connector, which can prevent the battery end connector from being affected by the outside world, which is beneficial to increasing the usable scenarios of the electric vehicle; on the other hand, the battery end connector is located on the side of the battery pack body, so that the battery pack can be electrically connected and liquid-cooled to the electric vehicle using the side, thereby making the connection path when the battery pack is electrically connected and liquid-cooled to the electric vehicle more compatible with the locking path when the battery pack is locked to the electric vehicle, which is beneficial to improving installation efficiency and eliminating the need to reserve installation space in the battery pack body, which is beneficial to improving structural compactness and avoiding the connector occupying battery cell space and affecting the battery pack capacity.

[0040] Specifically, the battery pack is locked to the electric vehicle by first moving the battery pack vertically and then horizontally. In this solution, the battery pack is connected to the electric vehicle via horizontal movement for both electrical and liquid cooling. This connection path aligns with the last step of the battery pack locking path, allowing the battery pack to be electrically and liquid-cooled to the electric vehicle upon completion of the last step of locking the battery pack. If the battery terminal connector is located at the top or bottom of the battery pack body, the battery pack must be locked first and then moved vertically to achieve both electrical and liquid cooling connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Schematic diagram of the structure of a battery pack according to a preferred embodiment of the present invention.

[0042] Figure 2 This is another structural schematic diagram of a battery pack according to a preferred embodiment of the present invention, in which the shell forming the protruding cavity and the shell at the first end are omitted.

[0043] Figure 3 This is an enlarged view of the local structure of the battery pack according to a preferred embodiment of the present invention.

[0044] Figure 4 This is a structural schematic diagram of the battery cell accommodating chamber and the first mounting bracket in a preferred embodiment of the present invention.

[0045] Figure 5Schematic diagram of the structure of the wire harness fixing plate and the exploded structure of the first mounting bracket according to a preferred embodiment of the present invention.

[0046] Figure 6 Schematic diagram of the partial structure inside an electric vehicle according to a preferred embodiment of the present invention.

[0047] Description of Reference Numerals

[0048] Battery Pack 100

[0049] Battery pack body 1

[0050] First battery cell 11

[0051] Second battery cell 12

[0052] First end portion 13

[0053] Battery cell accommodating cavity 14

[0054] Protruding chamber 2

[0055] Battery terminal connector 3

[0056] Battery end electrical connector 31

[0057] Harness 32

[0058] Battery end liquid cooling connector 33

[0059] Connecting pipe 34

[0060] First avoidance space 4

[0061] First mounting bracket 5

[0062] Mounting Panel 51

[0063] Installation of crossbeam 52

[0064] Installing longitudinal beam 53

[0065] Installation of vertical beams 54

[0066] Connector installation position 55

[0067] Wire harness fixing plate 6

[0068] Weight reduction hole 61

[0069] Second avoidance space 7

[0070] Car beam 200 DETAILED DESCRIPTION

[0071] A preferred embodiment is given below and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0072] like Figure 1-Figure 3As shown, this embodiment discloses a battery pack 100, which is applied to electric vehicles. The battery pack 100 includes a battery pack body 1 and a protruding cavity 2. The protruding cavity 2 is arranged on the side of the battery pack body 1 facing the beam 200 of the electric vehicle. The battery pack 100 is provided with a battery terminal connector 3, and the battery terminal connector 3 is at least partially arranged in the protruding cavity 2; wherein, the battery terminal connector 3 includes a battery terminal electrical connector 31 and its wiring harness 32 and / or a battery terminal liquid cooling connector 33 and its connecting pipe 34.

[0073] By providing a protruding cavity 2 on the side of the battery pack body 1 facing the beam 200 of the electric vehicle, and providing the battery terminal connector 3 in the protruding cavity 2, on the one hand, the protruding cavity 2 can be used to protect the battery terminal connector 3, and the negative impact of rainy, snowy and windy weather on the battery terminal connector 3 can be avoided, resulting in ice formation, poor connection, damage and other consequences of the battery terminal connector 3, which is beneficial to ensure that the electric vehicle can be used normally in rainy, snowy and windy weather, and thus is beneficial to increasing the usable scenarios of the electric vehicle; on the other hand, the battery terminal connector 3 is located on the side of the battery pack body 1, so that the battery pack 100 can use the side to be electrically connected and liquid-cooled to the electric vehicle, so that the connection path when the battery pack 100 is electrically connected and liquid-cooled to the electric vehicle is more adapted to the locking path when the battery pack 100 is locked to the electric vehicle, which is beneficial to improving installation efficiency, and there is no need to reserve installation space in the battery pack body 1, which is beneficial to improving structural compactness and avoiding the battery terminal connector 3 occupying the cell space and affecting the battery pack capacity.

[0074] Specifically, the locking path for locking the battery pack 100 to the electric vehicle is to first move the battery pack 100 vertically and then move the battery pack 100 horizontally. In this embodiment, the connection path for the battery pack 100 to be electrically and liquid-cooled to the electric vehicle is horizontal movement. This connection path is consistent with the last step of the locking path for the battery pack 100, so that the electrical and liquid-cooling connections between the battery pack 100 and the electric vehicle are completed when the last step of locking the battery pack 100 is completed. If the battery terminal connector 3 is located at the top or bottom of the battery pack body 1, it is necessary to first lock the battery pack 100 and then move the battery pack 100 vertically to achieve the electrical and liquid-cooling connections.

[0075] In the height direction of the battery pack 100 (i.e. Figure 1 In the X direction in the drawing, the size of the protruding cavity 2 is smaller than that of the battery pack body 1, so as to form a first avoidance space 4 above or below the protruding cavity 2. The first avoidance space 4 is used to accommodate the vehicle beam 200, that is, the free space on the battery pack 100 is reasonably utilized to place the vehicle beam 200 of the electric vehicle, which is beneficial to improving the space utilization rate of the electric vehicle chassis and further beneficial to reducing the size of the electric vehicle.

[0076] Specifically, such as Figure 2As shown, the battery pack body 1 includes a first battery cell 11 and a second battery cell 12, which are stacked along the height direction of the battery pack 100. The stacking of the two battery cells not only ensures the battery capacity of the battery pack 100 and the endurance of the electric vehicle, but also reduces the horizontal size of the battery pack 100 compared to horizontal arrangement of the battery cells. When the battery pack 100 is positioned on the side of the beam 200 of the electric vehicle, it is advantageous to accommodate a larger capacity battery pack 100 without increasing the size of the electric vehicle.

[0077] The first battery cell 11 and the second battery cell 12 both include a first end 13, and the first ends 13 of the first battery cell 11 and the second battery cell 12 are oriented in the same direction; in this embodiment, the wiring harness 32 is electrically connected between the first end 13 of the first battery cell 11, the first end 13 of the second battery cell 12 and the battery-end electrical connector 31; the connecting tube 34 is connected between at least one first end 13 and the battery-end liquid cooling connector 33.

[0078] Connecting the wiring harnesses 32 of the first and second battery cells 11, 12 to the same side of the first and second battery cells 11, 12, and connecting the connecting tubes 34 to the same side of the wiring harnesses 32, on the one hand, only requires space on one side of the battery pack 100, which helps ensure that the size of the battery pack 100 is within an appropriate range. On the other hand, the centralized arrangement of multiple wiring harnesses 32 and connecting tubes 34 allows them to be locally protected by the protruding chamber 2, which helps reduce the size of the protruding chamber 2, thereby preventing interference between the protruding chamber 2 and other functional components of the electric vehicle, while also clearly defining the distribution of functional areas.

[0079] In other embodiments, the wiring harness 32 and the connecting tube 34 may be connected to the two ends of the first battery cell 11 and the second battery cell 12 respectively, that is, only the wiring harness 32 is connected to the first end 13 , or only the connecting tube 34 is connected to the first end 13 .

[0080] Preferably, the wiring harness 32 extends from the first end 13 toward a first position, which corresponds to the height of the protruding cavity 2 in the battery pack 100. The wiring harness 32 for the first battery cell 11 and the wiring harness 32 for the second battery cell 12 are both led out at the first position, so that the lead-out position of the wiring harness 32 corresponds to the height of the protruding cavity 2. In this way, when the wiring harness 32 is connected to the battery-side electrical connector 31, the wiring harness 32 can be ensured to be completely located within the protruding cavity 2, which helps to ensure that the protruding cavity 2 effectively protects the wiring harness 32.

[0081] The connecting tube 34 extends from the first end 13 toward a second position, which corresponds to the height of the protruding cavity 2 in the battery pack 100. Similarly, when the connecting tube 34 is connected to the battery terminal liquid cooling connector 33, it can be ensured to be completely located within the protruding cavity 2, which helps to ensure that the protruding cavity 2 effectively protects the connecting tube 34.

[0082] like Figure 4 As shown, the battery pack body 1 includes a cell accommodating cavity 14, in which at least one of the first cell 11 and the second cell 12 is disposed. A gap is defined between the first end portion 13 and the wall of the cell accommodating cavity 14, and the gap is used to accommodate at least the wiring harness 32 and / or the connecting tube 34. The cell accommodating cavity 14 protects the cells. Furthermore, the wiring harness 32 and the connecting tube 34 have portions connected to the cells and portions connected to the battery-end connector 3. By arranging the connecting tube 34 and the wiring harness 32 within the battery accommodating cavity, the portions connected to the cells can be protected by the cell accommodating cavity 14, preventing the wiring harness 32 and the connecting tube 34 from being exposed and causing wear or poor connection.

[0083] In this embodiment, the battery cell accommodating cavity 14 is combined with the protruding cavity 2, which can completely protect the parts of the wiring harness 32 and the connecting tube 34 connected to the battery cell and the parts connected to the battery end connector 3, so that the wiring harness 32 and the connecting tube 34 as a whole will not be exposed, which is conducive to ensuring the connection stability between the battery end connector 3 and the battery pack body 1, and further ensuring that the battery pack 100 can stably supply power to the electric vehicle, ensuring the safety and stability of the electric vehicle during driving.

[0084] like Figure 3-Figure 5 As shown, the battery pack 100 also includes a first mounting bracket 5 disposed within the protruding cavity 2. The first mounting bracket 5 is configured to mount the battery-side electrical connector 31 and accommodate the wiring harness 32, and / or the first mounting bracket 5 is configured to mount the battery-side liquid-cooling connector 33 and accommodate the connecting tube 34. Using the first mounting bracket 5 to mount the battery-side electrical connector 31 and / or the battery-side liquid-cooling connector 33 helps ensure the secure installation of the battery-side electrical connector 31 and / or the battery-side liquid-cooling connector 33. It also prevents deformation of the battery body due to the weight of the battery-side electrical connector 31 and / or the battery-side liquid-cooling connector 33, thereby protecting the battery cells within the battery body. Furthermore, the first mounting bracket 5 can accommodate the wiring harness 32 and / or the connecting tube 34, which not only further protects the wiring harness 32 and the connecting tube 34 but also neatly arranges the wiring harness 32 and / or the connecting tube 34, preventing interference between the wiring harnesses 32 and improving safety.

[0085] Specifically, the first mounting bracket 5 includes at least a mounting panel 51 and a mounting crossbeam 52. One end of the mounting crossbeam 52 is connected to the battery pack body 1, and the other end extends away from the battery pack body 1. The mounting panel 51 is disposed at the end of the mounting crossbeam 52 away from the battery pack body 1 and is used to mount the battery-side liquid-cooling connector 33 and / or the battery-side electrical connector 31. The mounting panel 51 is disposed at the end of the mounting crossbeam 52 away from the battery pack body 1. The mounting crossbeam 52 ensures secure installation of the battery-side electrical connector 31 and the battery-side liquid-cooling connector 33. Furthermore, the mounting crossbeam 52 creates a certain gap between the mounting panel 51 and the battery pack body 1, which can accommodate the wiring harness 32 and the connecting tube 34.

[0086] Further, if Figure 5 As shown, the first mounting bracket 5 also includes a mounting longitudinal beam 53 and a mounting vertical beam 54. Both ends of the mounting longitudinal beam 53 and the mounting vertical beam 54 are connected to the mounting horizontal beam 52 to form a frame structure. The mounting panel 51 is provided at the end of the frame structure away from the battery pack body 1. The use of the mounting longitudinal beam 53, the mounting vertical beam 54, and the mounting horizontal beam 52 to form a frame structure further improves the installation stability of the battery-end electrical connector 31 and the battery-end liquid cooling connector 33.

[0087] like Figure 5 As shown, the battery pack 100 further includes a wire harness fixing plate 6, which is disposed within the first mounting bracket 5. The first mounting bracket 5 is provided with a connector mounting position 55, and the wire harness fixing plate 6 corresponds to the position of the connector mounting position 55. On the one hand, the wire harness fixing plate 6 corresponds to the position of the connector mounting position 55. When the wire harness 32 is fixed to the wire harness fixing plate 6, the wire harness fixing plate 6 can guide the wire harness 32 to the connector mounting position 55, which is beneficial for improving installation efficiency and the connection stability between the wire harness 32 and the battery-end connector 3. On the other hand, the wire harness fixing plate 6 helps ensure that the wire harness 32 is arranged according to the designed position, especially when the wire harness 32 is close to the battery-end connector 3, the wire harness 32 is restricted by the wire harness fixing plate 6, specifically preventing the wire harness 32 from being pulled or shifted due to bumps during the driving of the electric vehicle near the battery-end connector 3, which helps ensure the connection stability between the wire harness 32 and the battery-end connector 3.

[0088] In this embodiment, the wire harness fixing plate 6 is inclined, with one end connected to the battery pack body 1 and the other end connected to the first mounting bracket 5. The inclined shape of the wire harness fixing plate 6 facilitates alignment with the connector mounting position 55 on the first mounting bracket 5. Furthermore, the inclined shape of the wire harness fixing plate 6 enhances structural strength, improving the structural stability of the first mounting bracket 5 and, in turn, enhancing the installation stability of the battery-side connector 3. In other embodiments, the wire harness fixing plate 6 may also extend vertically or horizontally.

[0089] Furthermore, the wiring harness fixing plate 6 is provided with a plurality of weight-reducing holes 61 , which is conducive to achieving the lightweight requirement of the battery pack 100 .

[0090] In the length direction of the battery pack 100 (i.e. Figure 1 In the Y direction in the drawing, the size of the protruding cavity 2 is smaller than that of the battery pack body 1, so as to form a second avoidance space 7 on the side of the protruding cavity 2. The second avoidance space 7 is used to accommodate functional parts of the electric vehicle, that is, the space on the battery pack 100 is reasonably utilized to avoid and set other functional parts in the electric vehicle. On the one hand, it can prevent other functional parts from interfering with the battery pack 100, which is conducive to ensuring the smooth installation of the battery pack 100; on the other hand, it is conducive to improving the compactness of the arrangement of various functional parts inside the electric vehicle, improving space utilization, and thereby reducing the floor space of the electric vehicle.

[0091] This embodiment also discloses an electric vehicle, which includes the battery pack 100 as described above. The battery pack 100 is applied to the electric vehicle, such as Figure 6 As shown, both sides of the electric vehicle's beam 200 can be used to install the battery pack 100, which not only makes rational use of the space on both sides of the beam 200 but also meets the electric vehicle's endurance requirements. Furthermore, electric vehicles using the battery pack 100 can prevent the battery terminal connector from being affected by external factors, have a wide range of usage scenarios, and are more efficient in installing the battery pack in electric vehicles.

[0092] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A battery pack for electric vehicles, characterized in that: The battery pack includes a battery pack body and a protruding cavity, the protruding cavity is arranged on the side of the battery pack body facing the beam of the electric vehicle, and the battery pack is provided with a battery terminal connector, and the battery terminal connector is at least partially arranged in the protruding cavity; wherein, the battery terminal connector includes a battery terminal electrical connector and its wiring harness and / or a battery terminal liquid cooling connector and its connecting pipe.

2. The battery pack according to claim 1, wherein: In the height direction of the battery pack, the size of the protruding cavity is smaller than the size of the battery pack body, so as to form a first avoidance space above or below the protruding cavity, and the first avoidance space is used to accommodate the vehicle beam.

3. The battery pack according to claim 1, wherein: The battery pack body includes a first battery cell and a second battery cell, and the first battery cell and the second battery cell are stacked along a height direction of the battery pack.

4. The battery pack according to claim 3, wherein: The first battery cell and the second battery cell each include a first end portion, and the first end portions of the first battery cell and the second battery cell are oriented in the same direction; The wiring harness is electrically connected between the first end of the first battery cell, the first end of the second battery cell and the battery end electrical connector; And / or, the connecting pipe is connected between at least one of the first end portions and the battery terminal liquid cooling connector.

5. The battery pack according to claim 4, wherein: The wiring harness extends from the first end toward a first position, the first position corresponding to a position of the protruding cavity in a height direction of the battery pack; and / or, the connecting tube extends from the first end toward a second position, and the second position corresponds to a position of the protruding cavity in a height direction of the battery pack; And / or, the battery pack body includes a cell accommodating cavity, at least one of the first cell and the second cell is arranged in the cell accommodating cavity, and there is a gap between the first end and the cavity wall of the cell accommodating cavity, and the gap is at least used to accommodate the wiring harness and / or the connecting tube.

6. The battery pack according to claim 1, wherein: The battery pack further includes a first mounting bracket disposed in the protruding cavity. The first mounting bracket is configured to mount the battery-end electrical connector and accommodate the wiring harness, and / or the first mounting bracket is configured to mount the battery-end liquid cooling connector and accommodate the connecting pipe.

7. The battery pack according to claim 6, wherein: The first mounting bracket includes at least a mounting panel and a mounting beam, one end of the mounting beam is connected to the battery pack body, and the other end extends away from the battery pack body, and the mounting panel is provided at the end of the mounting beam away from the battery pack body and is used to mount the battery end liquid cooling connector and / or the battery end electrical connector; Preferably, the first mounting bracket further includes a mounting longitudinal beam and a mounting vertical beam, both ends of the mounting longitudinal beam and the mounting vertical beam are connected to the mounting cross beam to form a frame structure, and the mounting panel is provided at one end of the frame structure away from the battery pack body.

8. The battery pack according to claim 6, wherein: The battery pack further includes a wiring harness fixing plate, the wiring harness fixing plate being disposed in the first mounting bracket, the first mounting bracket being provided with a connector mounting position, the wiring harness fixing plate corresponding to the position of the connector mounting position; Preferably, the wiring harness fixing plate is inclined, and one end of the wiring harness fixing plate is connected to the battery pack body, and the other end is connected to the first mounting bracket; and / or, The wiring harness fixing plate is provided with a plurality of weight-reducing holes.

9. The battery pack according to claim 1, wherein: In the length direction of the battery pack, the size of the protruding cavity is smaller than the size of the battery pack body, so as to form a second avoidance space on the side of the protruding cavity, and the second avoidance space is used to accommodate functional parts of the electric vehicle.

10. An electric vehicle, characterized in that: The electric vehicle comprises the battery pack according to any one of claims 1 to 9.

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