Battery pack and vehicle

Abstract

The application provides a battery pack and a vehicle, which can improve safety. The battery pack (100) comprises a housing (10) including a bottom plate (11) provided with a receiving portion (113); a battery module arranged above the bottom plate, including a first battery module (20L) and a second battery module (20R), the first battery module and the second battery module have a gap (S) therebetween, the gap coincides with the receiving portion when viewed along an up-down direction; a control device (41) arranged in the gap; a low-voltage connection assembly (60) electrically connected with the battery module and the control device and arranged in the gap; and a high-voltage connection assembly (50) electrically connected with the battery module and accommodated in the receiving portion.

Description

Technical Field

[0001] This invention relates to a battery pack and a vehicle. Background Technology

[0002] For example, electric vehicle battery packs include electrical connection components that are electrically connected to the battery modules and are used to transmit electrical energy or signals. Currently, there is a battery pack structure where the electrical connection components are placed within the gaps between the battery modules, thereby reducing the size of the battery pack.

[0003] However, for example, when an electric vehicle is involved in a collision, the battery pack may deform, causing the battery modules to move and collide with or squeeze the electrical connection components located in the gaps, which may adversely affect the safety of the battery. Summary of the Invention

[0004] This invention provides a battery pack and a vehicle that can improve safety.

[0005] This invention provides a battery pack, characterized in that it comprises: a housing, the housing including a base plate, the base plate having a receiving portion; a battery module disposed above the base plate, including a first battery module and a second battery module, the first battery module and the second battery module having a gap between them, the gap coinciding with the receiving portion when viewed vertically; a control device disposed in the gap; a low-voltage connection assembly electrically connecting the battery module and the control device, and disposed in the gap; and a high-voltage connection assembly electrically connecting the battery module and being received in the receiving portion.

[0006] By adopting the above structure, the high-voltage components are placed inside the bottom plate of the housing, making the battery pack structure more compact, improving the space utilization within the battery pack, and preventing the high-voltage wiring harness from deforming or breaking due to the battery module pressing on it during a side collision, thus improving the safety and reliability of the battery pack. In addition, placing the control device and low-voltage connection components in the gaps also makes the battery pack structure more compact, further improving the energy density of the battery pack.

[0007] In addition, when viewed from the top and bottom, the gap between the first battery module and the second battery module coincides with the receiving part. That is to say, the receiving part and the high-voltage connection component therein are arranged in the middle. Therefore, compared with the arrangement on the outer part, the risk of the high-voltage connection component being hit by external objects can be reduced.

[0008] As one possible implementation of the first aspect, the low-voltage connection assembly is located between the control device and the battery module, and is located below the control device.

[0009] By adopting the above structure, the low-voltage connection components are placed diagonally below the control device, which minimizes the overall volume, makes reasonable use of the space of the casing, and improves the energy density of the battery pack.

[0010] In addition, the low-voltage connection component is located between the control device and the battery module in the gap. That is to say, when viewed from the top and bottom, the low-voltage connection component and the control device are staggered. Therefore, the operator can easily operate both the control device and the low-voltage connection component, avoiding mutual interference between the two operations.

[0011] In addition, the low-voltage connection assembly is located below the control device, thus ensuring the stability of the low-voltage connection assembly and its reliable performance.

[0012] As one possible implementation of the first aspect, the control device is fixed to the base plate by a control device bracket, the control device bracket including a main body and a base, the main body being erected relative to the base plate and mounting the control device; the base being bent from the lower end of the main body and mounted on the base plate.

[0013] The above structure forms an L-shaped bracket for the control device. The L-shaped bracket occupies less space at the top, improving the space utilization rate inside the battery pack, and the bottom connection is firm and reliable.

[0014] As one possible implementation of the first aspect, the control device is provided with a first connector that is electrically connected to the battery module at one end near the base plate.

[0015] By adopting the above structure and placing the first connection port at the bottom of the control device, waterproofing requirements can be easily met.

[0016] As one possible implementation of the first aspect, the low-voltage connection assembly is provided with a second connector, and the first connector is plugged into the second connector.

[0017] With the above structure, since the first connector is located at the end of the control device near the base plate, it can be easily installed and disassembled with the second connector, and it also easily meets the waterproof requirements.

[0018] As one possible implementation of the first aspect, the base plate includes a first plate and a second plate, the first plate being located above the second plate, the battery module being arranged above the first plate, and the receiving portion being provided within a height range between the first plate and the second plate.

[0019] With the above structure, the high-voltage connection assembly is housed in a receiving portion located between the first and second plates below the battery module. Therefore, for example, when the battery pack is impacted and the battery module moves, the battery module is less likely to collide with the high-voltage connection assembly housed in the receiving portion. This helps to prevent damage to the high-voltage connection assembly or electrical connection failure (including poor contact or electrical connection failure), thus improving the safety of the battery pack. Here, the movement of the battery module includes, for example, translation along the first plate or rotation due to bending of the first plate.

[0020] As one possible implementation of the first aspect, the base plate is provided with a coolant channel.

[0021] With this structure, the base plate has a coolant channel, so the base plate needs to have a certain thickness to accommodate the coolant channel. Using such a base plate to house the electrical connection components does not increase the thickness of the base plate, which is beneficial for the miniaturization of the battery pack.

[0022] As one possible implementation of the first aspect, a reinforcing member is provided above the base plate.

[0023] With the above structure, since the reinforcing components are located above the base plate, not only can the overall strength of the housing be enhanced, but the arrangement of the coolant channels will not be affected.

[0024] As one possible implementation of the first aspect, the portion of the coolant channel farther from the centerline of the base plate is upstream of the coolant flow, and the portion closer to the centerline of the base plate is downstream of the coolant flow, wherein the centerline extends along the extension direction of the base plate.

[0025] With the above structure, since the outer part of the battery module is more susceptible to external influences, cooling the outer part first in this embodiment can effectively cool the battery module.

[0026] As one possible implementation of the first aspect, the high-voltage connection assembly includes a high-voltage wiring harness and a high-voltage wiring harness bracket, the high-voltage wiring harness being disposed in the receiving portion, and the high-voltage wiring harness bracket covering the high-voltage wiring harness from above, forming the top of the receiving portion.

[0027] The above structure, with grooves and brackets forming a receiving part to accommodate the high-voltage wire harness, not only makes reasonable use of the space of the housing, but also ensures the strength of the housing.

[0028] As one possible implementation of the first aspect, the low-voltage connection assembly and the control device are located above the high-voltage harness bracket.

[0029] By adopting the above structure, the space of the casing is made reasonable, the battery pack has a greater energy density, and the routing of high-voltage and low-voltage wiring harnesses is more reasonable.

[0030] As one possible implementation of the first aspect, the low-voltage connection assembly includes a low-voltage wiring harness and a low-voltage wiring harness bracket, wherein the low-voltage wiring harness is fixed to the high-voltage wiring harness bracket by the low-voltage wiring harness bracket.

[0031] With the above structure, the low-voltage harness can be supported and protected by the low-voltage harness bracket.

[0032] As one possible implementation of the first aspect, the high-voltage harness includes a sheathing layer and a conductive element disposed within the sheathing layer, the sheathing layer being fixed to the high-voltage harness support.

[0033] With the above structure, the covering layer can easily ensure the insulation of the conductive components and fix the conductive components on the high-voltage harness bracket.

[0034] As one possible implementation of the first aspect, the reinforcing member is provided with an arched portion disposed in the gap.

[0035] With the above structure, the reinforcing component strengthens the battery pack casing, the arched section effectively disperses force, and it provides better deformation cushioning when the battery pack is impacted. Furthermore, the arched section prevents the reinforcing component from interfering with other components in the gap, such as low-voltage connection assemblies. In other words, interference is avoided while ensuring the strength of the reinforcing component.

[0036] As one possible implementation of the first aspect, the battery pack further includes a first connecting member and a second connecting member disposed on the base plate, the first connecting member and the second connecting member extending along the extension direction of the base plate, and the reinforcing member having its two ends fixed to the first connecting member and the second connecting member, respectively. The first connecting member, the reinforcing member, and the second connecting member constitute a reinforcing assembly.

[0037] Using the above structure, the first connecting component, the reinforcing component, and the second connecting component can be molded independently, thereby making it easy to manufacture typically long reinforcing assemblies. Furthermore, the reinforcing assembly can be easily installed or removed.

[0038] By adopting the above structure, the reinforcing component with the arched part is set independently of the first connecting component and the second connecting component, which makes it easy to form reinforcing components with more complex shapes.

[0039] A second aspect of the present invention provides a vehicle comprising a battery pack with any of the structures described in the first aspect.

[0040] Using the vehicle of the second aspect can achieve the same technical effect as the first aspect, which will not be described again here. Attached Figure Description

[0041] The various features of the present invention and the relationships between them are further explained below with reference to the accompanying drawings. The drawings are exemplary; some features are not shown to scale, and some drawings may omit conventional features in the field of this application that are not essential to this application, or additional features that are not essential to this application may be shown. The combination of features shown in the drawings is not intended to limit the present application. Furthermore, throughout this specification, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows: Figure 1 This is a schematic diagram of a vehicle according to one embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the principle of a battery pack according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a battery pack according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a battery pack according to one embodiment of the present invention; Figure 5 yes Figure 4 A three-dimensional structural diagram of the battery pack with the top cover removed. Figure 6 yes Figure 4 A top-down view of the battery pack with the top cover removed; Figure 7 yes Figure 4 A schematic diagram of a portion of the battery pack casing; Figure 8 yes Figure 7 The structural diagram of the structure without the high-voltage wiring harness is shown. Figure 9 This is a schematic diagram of the high-voltage wire harness in one embodiment of the present invention; Figure 10 This is a three-dimensional structural schematic diagram of the reinforcing component involved in one embodiment of the present invention; Figure 11 yes Figure 6 A cross-sectional view of the structure; Figure 12 yes Figure 11 A magnified view of a portion of the structure; Figure 13 yes Figure 6 Another cross-sectional view of the structure; Figure 14 yes Figure 13A magnified view of a portion of the structure; Figure 15a yes Figure 13 Another enlarged view of the structure in the image; Figure 15b yes Figure 15a A partial cross-sectional schematic diagram of the base plate; Figure 16 This is a schematic diagram of the combined state of the low-voltage connection components and control device and their surrounding structures involved in one embodiment of the present invention; Figure 17 yes Figure 16 A schematic diagram of the decomposition state of the structure in the diagram; Figure 18 This is a schematic diagram of the combined state of the low-voltage connection components involved in one embodiment of the present invention; Figure 19 yes Figure 18 A schematic diagram of the decomposition state of the structure in the diagram; Figure 20 yes Figure 18 A magnified view of a portion of the structure; Figure 21a This is a structural schematic diagram of the combined state of the high-voltage harness bracket and the control device bracket in one embodiment of the present invention; Figure 21b yes Figure 21a A magnified view of a portion of the structure shown. Figure 21c yes Figure 21a Another enlarged view of the structure shown; Figure 21d yes Figure 21a Another enlarged view of the structure shown; Figure 22a This is a three-dimensional structural diagram of the combined state of the battery module, power distribution device bracket, and power distribution device involved in one embodiment of the present invention; Figure 22b yes Figure 22a Top view of the structure; Figure 23 yes Figure 22a A structural diagram illustrating the decomposed state of the structure; Figure 24 This is a three-dimensional structural schematic diagram of a power distribution device bracket according to one embodiment of the present invention; Figure 25 This is a three-dimensional structural schematic diagram of a battery module involved in one embodiment of the present invention; Figure 26 This is a three-dimensional structural schematic diagram of a power distribution device according to one embodiment of the present invention; Figure 27 This is a top view schematic diagram of a power distribution device according to one embodiment of the present invention; Figure 28a This is a three-dimensional structural schematic diagram of a control device in one embodiment of the present invention; Figure 28b This is a side view of the control device; Figure 28c This is a bottom view of the control device; Figure 28d This is another three-dimensional structural diagram of the control device; Figure 29 This is a schematic diagram illustrating the structure of the bayonet portion involved in the embodiments of the present invention; Figure 30 This is a schematic diagram of the structure of a battery pack according to one embodiment of the present invention, the structure of which differs from... Figure 4 The illustrated embodiment; Figures 31a-31f Examples of the base plate and its housing are shown.

[0042] Explanation of reference numerals in the attached figures 10. Housing; 11. Base plate; 11a. Protrusion; 12. Side plate; 13. Top cover; 14. Lifting lug; 15. Window panel; 16d. Bolt; 16e. Nut; 20. Battery module; 20a. Main body; 20b. Mounting hole; 20c. Wiring terminal; 20L. Battery module; 20R. Battery module; 21. Bolt (first bolt); 22. Nut; 31. Power distribution device; 31a. Mounting hole; 31b. Wiring terminal; 31c. Wiring terminal; 31d. Wiring terminal; 32. Power distribution device bracket; 32a 33. Mounting hole; 34. Bolt (second bolt); 45. Nut; 46. Control device; 47. Control device bracket; 48. Main body; 49. Base; 40. Wire harness fixing part; 41. Ring bracket; 52. High-voltage connection assembly (an example of a first high-voltage connection assembly and an electrical connection assembly); 53. High-voltage wire harness (an example of a wire harness); 54. Conductive element; 55. Covering layer; 56. Protrusion; 57. Connector; 58. Connector; 59. High-voltage connection assembly (an example of a second high-voltage connection assembly); 50. Terminal block 60. Low-voltage connection assembly; 61. Low-voltage wiring harness (an example of a wiring harness); 62. Low-voltage wiring harness bracket; 63. Ring bracket; 64. Ring bracket; 65. Connector; 66. Connector; 70. Reinforcing assembly; 71. First connecting part; 72. Reinforcing part; 72a. Arched part; 72b. Vertical part; 72c. Fixing part; 72d. Groove; 72e. Opening; 73. Second connecting part; 100. Battery pack; 101. Connection port; 102. Connection port; 111. Plate; 112. High-voltage wiring harness bracket; 112 a. Main body; 112b. Raised portion; 113. Receiving portion; 114. Buckle portion; 115. Coolant passage; 116. Plate; 116a. Opening; 118. Plate; 200. Vehicle; 201. Wheel; 202. Wheel; 203. Wheel; 204. Wheel; 210. Motor (an example of a first motor); 220. Motor (an example of a second motor); 321. Top; 321a. Reinforcing rib; 322. Side; 611. Main line portion; 612. Branch line portion; 621. Main body; 623. Wire harness fixing portion. Detailed Implementation

[0043] Some embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, directions such as front, back, left, right, up, and down are defined with reference to the driver sitting in the vehicle; however, these directions are defined for ease of description and are not intended to limit the present invention. Furthermore, these directions are also indicated in some of the accompanying drawings.

[0044] like Figure 2-4As shown in the figures, the present invention provides a battery pack 100, which includes: a housing 10, the housing 10 including a base plate 11, the base plate 11 having a receiving portion 113; a battery module 20, which is arranged above the base plate 11, including a battery module 20L and a battery module 20R, with a gap S between the battery module 20L and the battery module 20R, the gap S coinciding with the receiving portion 113 when viewed in the vertical direction; a control device 41, which is disposed in the gap S; a low-voltage connection assembly 60, which is electrically connected to the battery module and the control device 41, and is disposed in the gap S; and a high-voltage connection assembly 50, which is electrically connected to the battery module and is housed in the receiving portion 113.

[0045] By adopting the above structure, the high-voltage connection assembly is placed inside the bottom plate 11 of the housing 10, making the structure of the battery pack 100 more compact, improving the space utilization rate inside the battery pack 100, and also preventing the high-voltage wiring harness 51 from deforming or breaking due to the battery module pressing on it during a side collision, thus improving the safety and reliability of the battery pack 100. In addition, placing the control device 41 and the low-voltage connection assembly 60 in the gap S also makes the structure of the battery pack 100 more compact, further improving the energy density of the battery pack 100.

[0046] Understandable, such as Figures 4-8 As shown, the housing 10 may include not only a base plate 11, but also side plates 12 extending from the periphery of the base plate 11 and a top cover 13 covering the space formed by the base plate 11 and the side plates 12. The battery module 20 is disposed in the internal space of the housing 10 formed together by the base plate 11, the side plates 12 and the top cover 13.

[0047] Optionally, in one embodiment, such as Figure 3 , Figure 16 As shown, the low-voltage connection assembly 60 is located between the control device 41 and the battery module 20R, and is located below the control device 41.

[0048] By adopting the above structure, the low-voltage connection component 60 is placed diagonally below the control device 41, which minimizes the overall volume occupied, makes reasonable use of the space of the housing 10, and improves the energy density of the battery pack 100.

[0049] Furthermore, in the gap S, the low-voltage connection assembly 60 is located between the control device 41 and the battery module 20R. That is, viewed vertically, the low-voltage connection assembly 60 and the control device 41 are staggered. Therefore, the operator can easily operate both the control device 41 and the low-voltage connection assembly 60, avoiding interference between their operations. It is understood that the low-voltage connection assembly 60 could also be located between the control device 41 and the battery module 20L.

[0050] In addition, the low-voltage connection component 60 is located below the control device 41, thus ensuring that the low-voltage connection component 60 is in a stable position and performs reliably.

[0051] Optionally, in one embodiment, such as Figure 15a As shown, the control device 41 is fixed on the base plate 11 by the control device bracket 42. The control device bracket 42 includes a main body 42a and a base 42b. The main body 42a is vertically arranged relative to the base plate 11 and the control device 41 is mounted thereon. The base 42b is bent from the lower end of the main body 42a and mounted on the base plate 11.

[0052] The above structure makes the control device bracket 42 an L-shaped bracket. The upper part of the L-shaped bracket occupies little space, which improves the space utilization rate inside the battery pack 100, and the bottom connection is firm and reliable.

[0053] In other embodiments, control device brackets of other shapes can be used, or the control device bracket 42 can be omitted to achieve the installation of control device 41.

[0054] Optionally, in one embodiment, such as Figure 28c As shown, the control device 41 has a connector 41e (an example of the first connector) that is electrically connected to the battery module at one end near the base plate 11.

[0055] With the above structure, the first connector is placed at the lower part of the control device 41, which easily meets the waterproof requirements.

[0056] Optionally, in one embodiment, such as Figure 18 As shown, the low-voltage connection assembly 60 is provided with a connector 65 (an example of a second connector), and the connector 41e is inserted into the connector 65. Specifically, when the opening of the connector 41e is set downwards, the connector 65 can be located at the lower part of the control device 41.

[0057] With the above structure, since the connector 41e is located at the end of the control device 41 near the base plate 11, it can be easily installed and disassembled with the connector 65, and it can also easily meet the waterproof requirements.

[0058] Optionally, in one embodiment, such as Figure 3 As shown, the base plate 11 includes plate 116 and plate 111, with plate 116 located above plate 111. The battery module is arranged above plate 116, and the aforementioned receiving portion 113 is provided within the height range between plate 116 and plate 111.

[0059] With the above structure, the high-voltage connection assembly 50 is housed in the receiving portion 113 located between plates 116 and 111 below the battery module. Therefore, for example, when the battery pack 100 is impacted and the battery module moves, the battery module is less likely to collide with the high-voltage connection assembly 50 housed in the receiving portion 113. This helps to prevent damage to the high-voltage connection assembly 50 or damage to the electrical connection (including poor contact or electrical connection failure), thus improving the safety of the battery pack 100. Here, the movement of the battery module includes, for example, translation along plate 116 or rotation due to bending of plate 116.

[0060] Optionally, in one embodiment, such as Figure 11 , Figure 13 , Figure 14 As shown, a coolant channel 115 is provided in the base plate 11.

[0061] With this structure, the base plate 11 has a coolant channel 115. Therefore, the base plate 11 needs to have a certain thickness to accommodate the coolant channel 115. In the embodiments of the present invention, such a base plate 11 is used to accommodate the receiving part 113 to accommodate the electrical connection component, which does not increase the thickness of the base plate 11 and is beneficial to the miniaturization of the battery pack 100.

[0062] In addition, the housing 113 and the coolant channel 115 are both located in the base plate 11, making full use of the space of the base plate 11 and making the structure of the battery pack 100 more compact.

[0063] Furthermore, by providing both the housing 113 and the coolant channel 115 within the base plate 11, the battery module 20 and the high-voltage connection assembly 50 can be easily cooled simultaneously by the coolant. The housing 113 and the coolant channel 115 can be arranged along a direction perpendicular to the thickness direction of the base plate 11.

[0064] In other embodiments, the coolant passage 115 may be located in other positions, such as above or outside the base plate 11.

[0065] Optional, such as Figure 11 , Figure 13 , Figure 14 As shown in the figure, in one embodiment, in the base plate 11, in the horizontal direction, the coolant channel 115 is positioned opposite the battery module 20, and the receiving portion 113 is positioned offset from the battery module 20. That is, viewed in the vertical direction, the coolant channel 115 is positioned coinciding with the battery module 20, and the receiving portion 113 is positioned offset from the battery module 20.

[0066] With the above structure, the receiving part 113 is positioned at a location offset from the battery module 20. This avoids affecting the cooling effect on the battery module 20 and keeps the receiving part 113 as far away from the battery modules 20L and 20R as possible, thereby suppressing electromagnetic interference from the high-voltage wiring harness 51 in the high-voltage connection assembly 50 to the battery module 20.

[0067] In other embodiments, the receiving portion 113 may also be partially or entirely aligned with the battery module 20 in the horizontal direction, and the coolant channel 115 and the receiving portion 113 may be arranged vertically overlapping. Alternatively, viewed vertically, the receiving portion 113 may be positioned to partially or entirely overlap with the battery module 20.

[0068] Optionally, in one embodiment, such as Figures 6-8 As shown, a reinforcing member 72 is provided above the base plate 11. Specifically, a reinforcing member 72 is provided above the plate 116.

[0069] With the above structure, since the reinforcing component 72 is located above the plate 116, it not only strengthens the overall strength of the housing 10, but also does not affect the arrangement of the coolant passage 115.

[0070] Optionally, in one embodiment, such as Figure 8 , Figure 11 As shown, the portion of the coolant channel 115 that is farther from the center line X of the base plate 11 is upstream of the coolant flow, and the portion that is closer to the center line X of the base plate 11 is downstream of the coolant flow. The center line X extends along the extension direction of the base plate 11.

[0071] With the above structure, since the outer part of the battery module is more susceptible to external influences, cooling the outer part first in this embodiment can effectively cool the battery module.

[0072] Optionally, in one embodiment, such as Figure 3 , Figure 12 , Figure 15a , Figure 16 , Figure 17 As shown, the high-voltage connection assembly 50 includes a high-voltage wire harness 51 and a high-voltage wire harness bracket 112. The high-voltage wire harness 51 is disposed in the receiving portion 113, and the high-voltage wire harness bracket 112 covers the high-voltage wire harness 51 from above, forming the top of the receiving portion 113.

[0073] The above structure is used to accommodate the high-voltage wire harness 51 by setting a groove on the base plate 11 and forming a receiving part 113 with a high-voltage wire harness bracket 112. This not only makes reasonable use of the space of the housing 10, but also ensures the strength of the housing 10.

[0074] Optionally, in one embodiment, such as Figure 3As shown, the low-voltage connection assembly 60 and the control device 41 are located above the high-voltage harness bracket 112.

[0075] By adopting the above structure, the space of the housing 10 is made reasonable, so that the battery pack 100 has a greater energy density and the wiring of the high voltage harness 51 and the low voltage harness 61 is more reasonable.

[0076] Optionally, in one embodiment, such as Figure 3 , Figure 12 , Figure 15a As shown, the low-voltage connection assembly 60 includes a low-voltage wiring harness 61 and a low-voltage wiring harness bracket 62. The low-voltage wiring harness 61 is fixed to the high-voltage wiring harness bracket 112 by the low-voltage wiring harness bracket 62.

[0077] With the above structure, the low-voltage wire harness 61 can be supported and protected by the low-voltage wire harness bracket 62.

[0078] Optionally, in one embodiment, such as Figure 3 , Figure 12 As shown, the high-voltage harness 51 includes a covering layer 51b and a conductive element 51a disposed within the covering layer 51b. The covering layer 51b is fixed on the high-voltage harness bracket 112.

[0079] With the above structure, the covering layer 51b can easily ensure the insulation of the conductive component 51a and fix the conductive component 51a on the high-voltage wire harness bracket 112.

[0080] Optionally, in one embodiment, such as Figure 12 As shown, the reinforcing member 72 has an arched portion 72a, which is disposed in the gap S.

[0081] With the above structure, the reinforcing member 72 strengthens the battery pack 100 housing 10, the arched portion 72a effectively disperses the force, and provides better deformation cushioning when the battery pack 100 is subjected to an impact. Furthermore, the arched portion 72a also prevents the reinforcing member 72 from interfering with other components in the gap S, such as the low-voltage connection assembly 60. In other words, interference is avoided while ensuring the strength of the reinforcing member 72.

[0082] Optionally, in one embodiment, such as Figures 6-8 , Figures 10-12 As shown, the battery pack 100 also includes a first connecting component 71 and a second connecting component 73 disposed on the base plate 11. The first connecting component 71 and the second connecting component 73 extend along the extending direction of the base plate 11, and the two ends of the reinforcing component 72 are respectively fixed to the first connecting component 71 and the second connecting component 73. The first connecting component 71, the reinforcing component 72 and the second connecting component 73 constitute the reinforcing assembly 70.

[0083] Using the above structure, the first connecting member 71, the reinforcing member 72, and the second connecting member 73 can be molded independently, thereby making it easy to manufacture typically long reinforcing components. Furthermore, the reinforcing component 70 can be easily installed or removed.

[0084] Optionally, in one embodiment, such as Figure 12 As shown, the reinforcing member 72 has an arched portion 72a, and the low-voltage connection assembly 60 passes through the inside of the arched portion 72a and is electrically connected to the battery module.

[0085] By adopting the above structure, the reinforcing member 72 with the arched portion 72a is set independently of the first connecting member 71 and the second connecting member 73, which makes it easy to form a reinforcing member 72 with a more complex shape.

[0086] like Figure 1 As shown, one embodiment of the present invention provides a vehicle 200, which includes the aforementioned battery pack 100. Using this vehicle 200, the same technical effects can be achieved as with using the battery pack 100.

[0087] Figures 1-29 An embodiment of the present invention is shown, and it will be described in detail below. <Vehicles>

[0088] Figure 1 This is a schematic diagram of a vehicle according to one embodiment of the present invention. Figure 1 As shown, vehicle 200 is an electric vehicle, comprising a battery pack 100, motors 210 and 220, and wheels 201-204. Battery pack 100 supplies power to motors 210 and 220. Motor 210 is located at the front of vehicle 200, in front of battery pack 100, and drives the two front wheels 201 and 203. Motor 220 is located at the rear of vehicle 200, behind battery pack 100, and drives the two rear wheels 202 and 204. When the driver performs manual driving or vehicle 200 performs automatic driving, battery pack 100 supplies power to motors 210 and / or 220, which drive wheels 201 and 203 and / or wheels 202 and 204 to rotate, causing vehicle 200 to move forward or backward.

[0089] There are no particular restrictions on the types of vehicles 200, such as cars, trucks, buses, or sport utility vehicles (SUVs).

[0090] in addition, Figure 1 The vehicle 200 shown is a pure electric vehicle. However, the invention is not limited to this and can also be applied to hybrid vehicles.

[0091] Furthermore, in Figure 1 The illustrated vehicle 200 includes two motors, 210 and 220, one at the front and one at the rear. However, the number and configuration of motors in this invention are not limited to this. For example, it may include four hub motors or wheel-side motors, or three motors, etc. When three motors are included, for example, one motor may be configured at the front of the vehicle 200, and two motors may be configured at the rear of the vehicle 200. <Battery Pack Overall>

[0092] Figure 2 This is a schematic diagram illustrating the principle of a battery pack involved in this embodiment. For example... Figure 2 As shown, the battery pack 100 includes a housing 10, battery modules 20L and 20R, high-voltage connection assemblies 50 and 55, and a power distribution device 31. The housing 10 houses the battery modules 20L and 20R. Battery module 20L is disposed in the left-side region of the housing 10, and battery module 20R is disposed in the right-side region of the housing 10. Furthermore, battery modules 20L and 20R are spaced apart in the left-right direction, with a gap S between them, so that the housing 10 has an intermediate region between the left-side region where battery module 20R is disposed and the right-side region where battery module 20R is disposed. In this document, the letters L and R in the reference numerals "20L, 20R" represent left and right, respectively, and when left and right are not distinguished, they are simply referred to as battery module 20.

[0093] The power distribution unit 31 is responsible for transferring or transmitting the electrical energy of the battery pack 100 to other high-voltage systems such as motors 210, 220, or air conditioning compressors (not shown).

[0094] In addition, such as Figure 2 As shown, connectors 52 and 53 are respectively provided at the front and rear ends of the housing 10. All battery modules 20 are connected in series and electrically connected to the power distribution device 31. The power distribution device 31 is electrically connected to the front connector 52 via a high-voltage connection assembly 50, which is used to connect to the front motor 210. In addition, the power distribution device 31 is electrically connected to the rear connector 53 via a high-voltage connection assembly 55, which is used to connect to the rear motor 220.

[0095] Here, the electrical connection between connectors 52 and 53 and motors 210 and 220 can be a direct electrical connection or an indirect electrical connection. For example, it can be made through an on-board AC / DC power charger, an on-board DC / DC power converter, or an on-board high-voltage connection junction box. Additionally, the voltage of the high-voltage connection components 50 and 55 is, for example, 400V and 500V.

[0096] In addition, such as Figure 2As shown, in this embodiment, the high-voltage connection assembly 50 extends forward from near the power distribution device 31 through the aforementioned intermediate region of the housing 10 to near the connector 52. This will be explained in more detail later.

[0097] Figure 3 This is another structural diagram of the battery pack 100, showing a local structure near the center in the left-right direction. For example... Figure 3 As shown, the battery pack 100 also includes multiple control devices 41 of the BMS (Battery Management System) and a low-voltage connection assembly 60. The multiple control devices 41 are used for intelligent management and maintenance of each battery module 20L and 20R, preventing overcharging and over-discharging, extending service life, and monitoring battery status. The low-voltage connection assembly 60 is used for electrical connection between the control devices 41 and the battery modules 20L and 20R. The voltage of the low-voltage wiring harness 61 is, for example, 12V.

[0098] In addition, both the high-voltage connection assembly 50 and the low-voltage connection assembly 60 are electrical connection assemblies in this application.

[0099] The structure of each component of the battery pack 100 is described in detail below. <Shell>

[0100] Figure 4 This is a 3D structural diagram of battery pack 100; Figure 5 yes Figure 4 A three-dimensional structural diagram of the battery pack with the top cover removed. Figure 6 yes Figure 4 A top-down view of the battery pack with the top cover removed; Figure 7 yes Figure 4 A schematic diagram of a portion of the battery pack casing; Figure 8 yes Figure 7 The diagram shows the structure with the high-voltage wiring harness removed.

[0101] like Figure 4 , Figure 7 , Figure 8As shown, the housing 10 of the battery pack 100 is generally flat and rectangular, including a base plate 11, side plates 12, a top cover 13, and lugs 14. The base plate 11 is generally rectangular, with its length direction aligned with the front-to-back direction. In this embodiment, the base plate 11 has a center line X extending along the front-to-back direction, and is generally symmetrical about the left and right sides with respect to this center line X. Furthermore, in this embodiment, the center line X is also the center line of the housing 10, meaning the housing 10 is also generally symmetrical about the left and right sides. The top cover 13 is generally rectangular, similar to the base plate 11, and is positioned vertically opposite to the base plate 11. The side plates 12 extend upwards from the perimeter of the base plate 11 to the top cover 13. The base plate 11, top cover 13, and side plates 12 together form a space capable of accommodating multiple battery modules 20. In this embodiment, the side plates 12 are fixed to the base plate 11, and the top cover 13 is detachably mounted on the side plates 12. It is understood that the shape of the battery pack 100 described here is merely an example and does not constitute a limitation of the present invention.

[0102] like Figure 4 , Figure 5 , Figure 6 As shown, the lifting lug 14 protrudes from the outer wall of the side panel 12. The housing 10 and the battery pack 100 can be mounted on the body of the vehicle 200 via the lifting lug 14.

[0103] In addition, such as Figure 4 As shown, a window panel 15 is installed at the front of the top cover 13, and at the center of the left and right sides. By removing the window panel 15, the window portion (not shown) on the top cover 13 is opened, allowing the interior of the housing 10 to be seen. Before disassembling the battery pack 100 for maintenance or other purposes, the window panel 15 can be opened first to disconnect the high-voltage circuit, and then the entire battery pack 100 can be disassembled, thus ensuring operational safety.

[0104] In addition, such as Figure 8 As shown, a reinforcing component 70 is provided in the housing 10, such as... Figure 15b As shown, the base plate 11 is provided with a receiving part 113 and a coolant passage 115, etc., and these structures will be described in detail later.

[0105] In addition, such as Figure 7 , Figure 8 As shown, a connection port 102 and a connection port 101 are respectively provided at the front and rear ends of the housing 10. The connection port 102 is used to configure the connector 52. Figure 2 ), so that the front motor 210 can be connected. The connection port 101 is used to configure the connector 53 ( Figure 2This allows connection to the rear motor 220. In this embodiment, connection ports 101 and 102 are located on the side plate 12. In other embodiments, they may also be located on the top cover 13 or the bottom plate 11. Furthermore, in this embodiment, connection ports 101 and 102 are positioned at the center of the housing 10 in the left-right direction. In other embodiments, connection ports 101 and 102 may be located in other positions. <Battery Module and Related Structures>

[0106] like Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, there are multiple battery modules 20L and 20R, arranged along the front-to-back direction on the base plate 11 (specifically, plate 116). Furthermore, there is a gap S between battery modules 20L and 20R in the left-to-right direction. Additionally, each battery module 20L and 20R is approximately cuboid in shape, with its height aligned with the vertical direction, its short side aligned with the front-to-back direction, and its long side aligned with the left-to-right direction. In other words, the multiple battery modules 20L and 20R are arranged with their long sides adjacent and their short sides aligned, respectively.

[0107] In addition, such as Figure 2 , Figure 5 As shown, the positive and negative terminals of each battery module 20 are located at opposite ends in the left-right direction. Furthermore, in the multiple battery modules 20L on the left and the multiple battery modules 20R on the right, the positive and negative terminals of adjacent battery modules 20 are arranged opposite each other. That is, for example, if the positive terminal of one left-side battery module 20L (or right-side battery module 20R) is on the left and the negative terminal is on the right, then the positive terminal of another adjacent left-side battery module 20L (or right-side battery module 20R) will be on the right and the negative terminal will be on the left. Thus, referring to… Figure 2 As can be seen from the wiring between adjacent left battery module 20L (or right battery module 20R), the length of the wiring between battery modules can be shortened.

[0108] Furthermore, in the multiple battery modules 20L and multiple battery modules 20R, the positive and negative terminals of adjacent or directly facing battery modules 20 are arranged opposite each other. That is, for example, if the positive terminal of a left-hand battery module 20L is on the left and the negative terminal is on the right, then the adjacent or directly facing right-hand battery module 20R also has its positive terminal on the left and its negative terminal on the right. Thus, for example, referring to... Figure 2 As can be seen from the wiring between the two foremost battery modules 20L and 20R, the length of the wiring between battery modules can be shortened.

[0109] Figure 25This is a three-dimensional structural diagram of the battery module involved in this embodiment. Additionally, Figure 25 The example shown is a battery module 20L on the left; however, apart from the different orientation, the battery module 20R on the right has the same structure. Figure 25 As shown, the battery module 20 is generally rectangular, with its long side arranged along the left-right direction and its short side arranged along the front-back direction. Its height is aligned with its vertical direction. The battery module 20 has a main body 20a, on which multiple mounting holes 20b are provided. Multiple bolts 21 ( Figure 22a , Figure 15a The battery module 20 passes through the mounting holes 20b respectively, thereby fixing the battery module 20 to the base plate 11 of the housing 10.

[0110] In addition, such as Figure 25 as well as Figure 15a As shown, a wiring port 20c is provided on one of the left and right ends of the main body 20a. This wiring port 20c is used for electrical connection to the connector 66 of the low-voltage connection assembly 60. Figures 18-20 This connects to the control device 41 (Figure 15, etc.). In this embodiment, as... Figure 25 As shown, when the battery module is the left-hand battery module 20L, the wiring port 20c is located at the right end of the battery module 20L; when the battery module is the right-hand battery module 20R, the wiring port 20c is located at the left end of the battery module 20R. That is, the wiring port 20c is positioned near the center of the battery module 20, near the end of the gap S between the left-hand battery module 20L and the right-hand battery module 20R. Thus, since the control device 41 is positioned within the gap S, the wiring port 20c can be positioned close to the control device 41, shortening the wiring length between the control device 41 and the battery module 20.

[0111] like Figure 5 , Figure 6 As shown, a bridge-shaped bridging bracket 17 is provided between the two foremost battery modules 20L and 20R. This bridging bracket 17 is arched upwards, with one end connected to the left battery module 20L and the other end connected to the right battery module 20R. The bridging bracket 17 is located near the top of the terminal block 58, and the aforementioned window plate 15 covers the top of the bridging bracket 17. The bridging bracket 17 acts as a switch (manual maintenance switch) for the high-voltage system circuit inside the battery pack 100. Before disassembling the battery pack 100 for maintenance or other purposes, the window plate 15 can be opened first, and then the bridging bracket 17 can be removed to disconnect the high-voltage circuit, thus allowing safe maintenance work on the high-voltage system.

[0112] The battery module 20 may contain multiple battery cells (single cells), which can be housed within a cuboid battery module housing and arranged along the long side of the housing. It goes without saying that the number of battery cells does not constitute a limitation on the present invention; even if the battery module 20 has only one battery cell, it does not affect the implementation of the present invention. <High-voltage connection components and related structures>

[0113] Figure 9 This is a schematic diagram of the high-voltage wiring harness involved in this embodiment; Figure 11 yes Figure 6 A cross-sectional view of the structure; Figure 12 yes Figure 11 A magnified view of a portion of the structure; Figure 13 yes Figure 6 Another cross-sectional view of the structure; Figure 14 yes Figure 13 A magnified view of a portion of the structure; Figure 15a yes Figure 13 Another enlarged view of the structure in the image; Figure 16 This is a schematic diagram of the combined state of the low-voltage connection components and control device and their surrounding structures involved in this embodiment; Figure 17 yes Figure 16 A schematic diagram of the decomposition state of the structure in the diagram; Figure 21a This is a structural schematic diagram of the combined state of the high-voltage harness bracket and the control device bracket involved in this embodiment; Figure 21b yes Figure 21a A magnified view of a portion of the structure shown. Figure 21c yes Figure 21a Another enlarged view of the structure shown; Figure 21d yes Figure 21a Another enlarged view of the structure shown.

[0114] like Figure 3 , Figure 12 , Figure 15a , Figure 16 , Figure 17 As shown, the high-voltage connection assembly 50 includes a high-voltage wiring harness 51, a terminal block 58 (an example of a connector), and a high-voltage wiring harness bracket 112. The high-voltage wiring harness 51 is an elongated component used for transmitting electrical energy. There are two terminal blocks 58, respectively located at both ends of the high-voltage wiring harness 51; one is used for electrical connection to the power distribution device 31, and the other is used for connection to the connector 52 (…). Figure 2 Electrical connection. The high-voltage harness 51 is mounted on the high-voltage harness bracket 112, and the high-voltage harness bracket 112 is mounted on the base plate 11, that is, the high-voltage harness 51 is mounted on the base plate 11 through the high-voltage harness bracket 112.

[0115] Understandably, a "wire harness" can be made of multiple wires or a single wire.

[0116] like Figure 2 , Figure 3 , Figure 9 , Figure 12 , Figure 15a As shown, the high-voltage harness 51 is flat in cross-section; specifically, in this embodiment, its cross-section is approximately a flat rectangle. Here, cross-section refers to the section perpendicular to the length direction of the high-voltage harness 51; flat means a shape where one dimension is smaller than another dimension, for example, in... Figure 12 In its current state, the height dimension (vertical dimension) of the high-voltage wire harness 51 is smaller than its width dimension (horizontal dimension). Therefore, the height direction of the high-voltage wire harness 51 is also the thickness direction. It can be understood that, with the same conductivity, a flat cable can reduce the dimension in one direction compared to a round or square cable. For example, refer to... Figure 12 As shown in the diagram, the circular low-voltage harness 61 and the flat high-voltage harness 51 have significantly smaller vertical dimensions than the low-voltage harness 61. It should also be noted that the comparison between the low-voltage harness 61 and the high-voltage harness 51 is to illustrate the characteristics of the flat high-voltage harness 51, and does not imply that the conductivity of the low-voltage harness 61 and the high-voltage harness 51 needs to be identical.

[0117] Reference Figure 3 , Figure 12 The high-voltage wiring harness 51 includes a conductive element 51a and a covering layer 51b that covers the conductive element 51a. The conductive element 51a is made of metal; for example, copper can be used, meaning the conductive element 51a is a copper busbar. Needless to say, other conductive materials can also be used for the conductive element 51a. The covering layer 51b is an insulating layer; for example, plastic can be used. Needless to say, other materials can also be used for the covering layer 51b, such as rubber.

[0118] Furthermore, in this embodiment, there are two conductive elements 51a, each covered by a coating layer 51b, thereby reliably preventing short circuits between the two conductive elements 51a by the coating layer 51b. Also, in this embodiment, the cross-section of the conductive element 51a is approximately rectangular, and the cross-section of the coating layer 51b is also approximately a flat rectangle, with the long sides and short sides of both rectangles being parallel.

[0119] like Figure 3 , Figure 12 , Figure 15a As shown, a receiving portion 113 is provided on the base plate 11, and the high-voltage connection assembly 50 is disposed in the receiving portion 113.

[0120] like Figure 3 , Figure 12 , Figure 15a , Figure 15b As shown, the bottom plate 11 of the housing 10 includes a plate 111 and a plate 116, which are arranged vertically opposite each other and spaced apart, with plate 116 located above plate 111. The battery module 20 is disposed above plate 116. The receiving portion 113 is disposed vertically within the height range between plate 111 and plate 116.

[0121] Thus, for example, when the vehicle is subjected to a side collision, the battery pack 100 deforms and the battery module 20 moves in the horizontal direction. However, since the high-voltage connection component 50 is disposed in the base plate 11 below the battery module 20, the battery module 20 is less likely to collide with the high-voltage connection component 50. This can suppress the occurrence of problems such as deformation, damage, breakage, leakage, and electrical connection damage (including poor contact or electrical connection failure) of the high-voltage connection component 50, thereby improving the safety and reliability of the battery pack 100.

[0122] In this embodiment, the base plate 11 and plates 111 and 116 are arranged horizontally, with their extension direction roughly consistent with the horizontal direction and their thickness direction roughly consistent with the vertical direction.

[0123] In addition, such as Figure 11 , Figure 13 , Figure 14 As shown, in this embodiment, a plurality of coolant channels 115 are formed between plate 111 and plate 116. That is, the receiving portion 113 and the coolant channels 115 are located between plate 111 and plate 116, thereby making it easy to use the coolant channels 115 to cool the high-voltage connection assembly 50 (high-voltage wiring harness 51).

[0124] In addition, the coolant channel 115 is located directly below the battery modules 20L and 20R. Viewed vertically, the coolant channel 115 coincides with either the battery module 20L or the battery module 20R. That is, the coolant channel 115 is horizontally positioned facing the battery modules 20L and 20R, close to them, thereby effectively cooling the battery modules 20L and 20R.

[0125] like Figure 13 , Figure 15aAs shown, viewed vertically, the housing 113 (and the high-voltage connection assembly 50 therein) is horizontally positioned offset from the battery modules 20L and 20R. This allows the housing 113 to be positioned in the area of ​​the base plate 11 where the coolant channel 115 is not located, effectively utilizing the space of the base plate 11 and making the battery pack 100 structure more compact, facilitating miniaturization. Furthermore, this avoids affecting the cooling effect on the battery modules 20, and by keeping the housing 113 as far away from the battery modules 20L and 20R as possible, it suppresses electromagnetic interference from the high-voltage wiring harness 51 to the battery modules 20L and 20R.

[0126] In this embodiment, battery module 20L is disposed on the left side of base plate 11, and battery module 20R is disposed on the right side of base plate 11. A receiving portion 113 is provided in the middle between the left and right sides, and the high-voltage connection assembly 50 is disposed in this receiving portion 113. That is, in base plate 11, the receiving portion 113 is disposed horizontally between the battery module 20L on the left and the battery module 20R on the right, and coincides with the gap S when viewed vertically. In this way, compared with disposing the receiving portion 113 on the outer side of base plate 11 in the left-right direction, the impact force on the high-voltage wiring harness 51 during a collision can be reduced, and damage to the high-voltage wiring harness 51 can be suppressed.

[0127] In addition, such as Figure 3 , Figure 12 , Figure 15a As shown, in this embodiment, the high-voltage wiring harness 51, like the high-voltage connection assembly 50, is also flat in cross-section, and is housed in the receiving portion 113 with its thickness direction roughly aligned with the thickness direction of the base plate 11. That is, the high-voltage connection assembly 50 and the high-voltage wiring harness 51 are placed flat in the receiving portion 113. This allows the high-voltage wiring harness 51 to effectively transmit electrical energy while minimizing its height, thereby effectively suppressing impacts from the battery module 20 and improving the safety of the battery pack 100. As mentioned above, "flat" means a shape where one dimension is smaller than another. Therefore, the thickness direction of the flat high-voltage wiring harness 51 refers to the direction of the smaller of the two dimensions, which in this embodiment is roughly aligned with the vertical direction.

[0128] like Figure 15bAs shown, the upper side of the receiving portion 113 has an opening 116a, which can also be described as an opening formed on the plate 116. During assembly, the high-voltage connection assembly 50 can be inserted into the receiving portion 113 through this opening 116a. Additionally, a support portion 113b is provided within the receiving portion 113, which supports and secures the high-voltage wire harness bracket 112. In this embodiment, the support portion 113b is stepped, and the high-voltage wire harness bracket 112 is supported by the upper surface of the step. Furthermore, support portions 113b can be provided on both the left and right sides of the receiving portion 113. Additionally, as... Figure 15b As shown, the housing 10 also includes a plate 110, which covers the area below the plate 111 and, for example, can provide protection for the plate 111. Additionally, in this embodiment, the receiving portion 113 is formed as an elongated groove extending in the front-rear direction and has an upward-facing opening 116a.

[0129] In addition, such as Figure 12 , Figure 15a , Figure 17 As shown, in this embodiment, the high-voltage wire harness 51 is mounted on the high-voltage wire harness bracket 112 from below. The high-voltage wire harness bracket 112 covers the opening 116a, forming the top of the receiving portion 113. During assembly, the high-voltage wire harness 51 can be mounted on the high-voltage wire harness bracket 112 first, and then the high-voltage wire harness bracket 112 with the high-voltage wire harness 51 can be mounted on the base plate 11. In this way, the high-voltage wire harness 51 can be easily installed and positioned.

[0130] In addition, in this embodiment, the bottom of the receiving portion 113 is formed by a plate 111.

[0131] In this embodiment, the receiving portion 113 extends from the front end to the rear end of the base plate 11, and the high-voltage harness bracket 112 is elongated, extending from the front end to the rear end of the base plate 11 (or plate 116), essentially covering the entire receiving portion in the front-rear direction. Thus, the strength of the base plate 11 in the front-rear direction can be improved by the high-voltage harness bracket 112. Furthermore, the high-voltage harness bracket 112 is elongated, and the high-voltage harness 51 is elongated, both arranged in the same length direction, thereby causing the high-voltage connection assembly 50 to also be elongated, extending from the front end to the rear end of the base plate 11 (or plate 116).

[0132] In this embodiment, the high-voltage wire harness 51 is fixed to the high-voltage wire harness bracket 112 by fixing the covering layer 51b to the high-voltage wire harness bracket 112. In this way, the covering layer 51b can both ensure the insulation of the conductive component 51a and fix the conductive component 51a to the high-voltage wire harness bracket 112.

[0133] As a more specific structure, such as Figure 9As shown, protrusions 51c protruding outward are provided on both sides of the covering layer 51b of the high-voltage wire harness 51 in the width direction. The high-voltage wire harness 51 is fixed to the high-voltage wire harness bracket 112 through these protrusions 51c. Specifically, for example, through holes can be provided on the protrusions 51c to allow rivets or screws 119 ( Figure 21b The high-voltage wire harness 51 is fixed to the high-voltage wire harness bracket 112 by passing through the through hole. However, the invention is not limited to this; for example, a locking slot can be provided on the high-voltage wire harness bracket 112, allowing the protrusion 51c to engage in the slot, thereby fixing the high-voltage wire harness 51 to the high-voltage wire harness bracket 112. Furthermore, in this embodiment, multiple protrusions 51c are provided on both sides of the width direction of the covering layer 51b, and these multiple protrusions 51c are arranged along the length direction of the high-voltage wire harness 51. Thus, the high-voltage wire harness 51 is fixed to the high-voltage wire harness bracket 112 at multiple positions along the length direction, thereby improving the bonding strength between the high-voltage wire harness 51 and the high-voltage wire harness bracket 112, and increasing the strength of the high-voltage connection assembly 50, for example, effectively resisting impact forces from the front and rear directions.

[0134] In addition, in this embodiment, the protrusion 51c and the covering layer 51b are integrally formed.

[0135] In addition, the receiving part 113 may or may not penetrate the plate 116 in the front-back direction, or it may be penetrated at one end and not at the other end.

[0136] like Figure 12 , Figure 15a As shown, in this embodiment, the height of the high-voltage wire harness bracket 112 is lower than that of the plate 116, that is, the high-voltage wire harness bracket 112 is lower than the plate 116 in the vertical direction. In addition, as another embodiment, the height of the high-voltage wire harness bracket 112 may be approximately the same as that of the plate 116, or it may be higher than the plate 116.

[0137] In this embodiment, the high-voltage wiring harness bracket 112 is made of metal, which can shield the electromagnetic waves of the high-voltage wiring harness 51 and suppress electromagnetic interference from the high-voltage wiring harness 51 to the battery module 20, etc. The high-voltage wiring harness bracket 112 is, for example, a sheet metal part. In other embodiments, the high-voltage wiring harness bracket 112 can also be made of other materials, such as plastic.

[0138] By making the height of the high-voltage wiring harness bracket 112 lower than or approximately equal to that of the plate 116, it is possible to reliably prevent the battery module 20 from hitting or squeezing the high-voltage connection assembly 50 and the high-voltage wiring harness 51 therein when it moves horizontally.

[0139] like Figure 3 , Figure 12 , Figure 15a , Figure 16As shown, a low-voltage connection assembly 60 is disposed above the high-voltage wiring harness bracket 112 in the gap S. This low-voltage connection assembly 60 is used for electrically connecting the control device 41 and the battery module 20. In this way, the low-voltage connection assembly 60 can be configured close to the high-voltage connection assembly 50, making the structure compact, effectively utilizing space, and improving the space utilization efficiency within the battery pack 100.

[0140] In addition, in this embodiment, a reinforcing component 70 is provided horizontally above the plate 116. This strengthens the overall strength of the housing 10 without affecting the arrangement of the coolant channel 115 (the arrangement of the coolant channel 115 does not need to consider avoiding the protrusion).

[0141] In this embodiment, as Figure 11 As shown, there are multiple coolant channels 115, arranged from the center outwards in a front-to-back direction. Coolant channels 115a, located near the outer edges, are upstream of the coolant flow, while those near the center are downstream. In other words, the portion of the coolant channels 115 farther from the centerline X of the base plate 11 (coolant channel 115a) is downstream, while the portion closer to the centerline (coolant channel 115b) is upstream. Coolant flows in through coolant channel 115a and out through coolant channel 115b. Thus, the coolant first cools the outer portion of the battery module 20, effectively cooling the battery module 20. Specifically, the outer portion of the battery module 20 is more susceptible to external influences; therefore, in this embodiment, cooling the outer portion first ensures effective cooling of the battery module 20.

[0142] In addition, in this embodiment, a coolant channel 115 is provided near the periphery of the receiving portion 113, thereby effectively cooling the high-voltage connection assembly 50 (high-voltage wiring harness 51).

[0143] Furthermore, the high-voltage connection assembly 50 can be fully or partially housed within the housing portion 113. In this embodiment, the high-voltage harness 51 is entirely housed within the housing portion 113, with the terminal blocks 58 at both ends extending above the high-voltage harness bracket 112, thereby facilitating wiring operations.

[0144] like Figure 15bAs shown, to maintain a stable gap between plates 111 and 116, protrusions 11a protruding towards the other can be provided on either or both of them, and multiple protrusions 11a can be provided. In this embodiment, plates 111 and 116 are formed separately and assembled together by bolts or welding. As another embodiment, plates 111 and 116 can also be formed integrally. In this embodiment, the protrusions 11a are formed as elongated convex ribs extending in the front-back direction.

[0145] like Figure 12 , Figure 15a , Figure 16 , Figure 17 , Figure 21a As shown, the high-voltage wire harness bracket 112 includes a main body 112a and a raised portion 112b. The main body 112a is generally rectangular and its surface is generally horizontal, thus effectively covering the opening 116a of the receiving portion 113. The raised portion 112b rises upward from the main body 112a and is used to fix the main wire portion 611 of the low-voltage wire harness 61. Figure 16 This will be explained in more detail later.

[0146] like Figure 8 , Figure 29 As shown, on the left and right side walls 113a of the receiving part 113 Figure 15b The high-voltage wire harness bracket 112 is provided with a locking portion 114, which protrudes from the left and right side walls 113a of the receiving portion 113 and has a recessed groove that faces towards the root (the opening of the groove faces the center of the receiving portion 113 in the left-right direction). The high-voltage wire harness bracket 112 is fitted into the groove, thereby restricting its movement in the vertical and horizontal directions. In addition, multiple locking portions 114 are provided on the left and right side walls of the receiving portion 113, arranged in the front-back direction. In this way, the position of the high-voltage wire harness bracket 112 can be reliably kept stable.

[0147] like Figure 21b As shown, notches 112c are provided on both sides of the width direction of the main body 112a, and the notches 112c and the slots 114 on the base plate 11 are connected. Figure 8 The number of notches 112c and the notch 112c are consistent, and the notch 112c can accommodate the bayonet 114. When assembling the high-voltage wire harness bracket 112 onto the base plate 11, first align each notch 112c with the bayonet 114, so that the bayonet 114 enters the notch 112c. In this state, move the high-voltage wire harness bracket 112 in the front-back direction, so that the edge of the main body 112a is inserted into the bayonet 114, and the bayonet 114 restricts the up-and-down movement of the high-voltage wire harness bracket 112.

[0148] In addition, in this embodiment, in order to easily insert the edge of the main body 112a into the bayonet portion 114, the opening width (i.e., the opening size in the vertical direction) of the bayonet portion 114 is greater than the thickness of the main body 112a. For example, it can be set to 1.5 times or more than 2 times the thickness of the main body 112a.

[0149] Alternatively, as a variation, the bayonet portion 114 may be provided only on one of the left or right side walls.

[0150] like Figure 21d As shown, a positioning portion 112d is provided on the width edge of the main body 112a. The positioning portion 112d has a side portion 112d1 and a side portion 112d2. The side portion 112d1 extends in a straight line along the length direction of the main body 112a, and the side portion 112d2 extends in a straight line along the width direction of the main body 112a. A positioning portion (not shown) that mates with the positioning portion 112d is provided on the bottom plate 11 of the housing 10. The shape of the positioning portion on the bottom plate 11 matches that of the positioning portion 112d, thereby enabling the high-voltage wire harness bracket 112 to be positioned in the front-back direction and the left-right direction.

[0151] like Figure 21b , Figure 21d As shown, the main body 112a has multiple mounting holes (not shown), and the high-voltage wire harness bracket 112 can be fixed to the base plate 11 by installing bolts 117 in these mounting holes. In addition, in this embodiment, mounting holes are provided at both the front and rear ends of the main body 112a.

[0152] When installing the high-voltage wire harness bracket 112, first align the notches 112c with the latches 114, then move the high-voltage wire harness bracket 112 slightly downwards so that the latches 114 enter the notches 112c. In this state, move the high-voltage wire harness bracket 112 in the front-back direction so that the positioning part 112d on the main body 112a and the positioning part on the base plate 11 abut in the front-back direction. Then, adjust the high-voltage wire harness bracket 112 so that the positioning part 112d and the positioning part on the base plate 11 abut in the left-right direction, thereby positioning the high-voltage wire harness bracket 112 in the front-back and left-right directions. At the same time, the left and right edges of the main body 112a are inserted into the latches 114 on the base plate 11, thereby restricting the vertical movement of the high-voltage wire harness bracket 112 by the latches 114. In this state, pass the bolts 117 through the mounting holes on the main body 112a to fix the high-voltage wire harness bracket 112 to the base plate 11.

[0153] like Figure 21c As shown, buffer members 74 can be placed on the left and right sides of the raised portion 112b of the main body 112a, and the buffer members 74 are held by the main body 112a and the reinforcing member 72 of the reinforcing assembly 70 (described later). Figure 12 This buffer component 74 is used to cushion the pressure exerted by the reinforcing assembly 70 or reinforcing member 72 on the high-voltage wiring harness bracket 112. The material of this buffer component 74 is not particularly limited; it can be made of metal, rubber, plastic, or felt.

[0154] In this embodiment, the high-voltage harness bracket 112 is fixed together with the high-voltage harness 51, thereby enhancing the strength of the base plate 11 in the front-rear direction. Furthermore, the flat high-voltage harness 51 is overlapped and fixed together with the plate-shaped high-voltage harness bracket 112, further enhancing the strength. <Power distribution equipment and related structures>

[0155] like Figure 2 , Figure 5 , Figure 6 As shown, the power distribution device 31 is installed inside the housing 10.

[0156] As described above, the power distribution device 31 is used to transfer or transmit electrical energy from the battery pack 100 to other high-voltage systems such as the motors 210 and 220, or the air conditioning compressor (not shown). In this embodiment, such as Figure 2 , Figure 5 , Figure 6 As shown, the power distribution device 31 is configured on the rearmost battery module 20L among multiple battery modules 20L. The power distribution device 31 may include relays, current sensors, fuses, pre-charge resistors, etc. The relays can be considered as high-current switches, capable of cutting off the current flowing through the bus and electrically isolating the high-voltage battery from other high-voltage systems. The current sensors are used to detect the current flowing through the circuit. The pre-charge resistors are used to protect the system from surge damage.

[0157] In this embodiment, the power distribution device 31 is installed at the rear of the housing 10. This makes it easier to inspect and replace the power distribution device 31 compared to installing it in the middle.

[0158] In addition, such as Figure 2 As shown, a connector 53 is provided at the rear of the housing 10, and the power distribution device 31 is disposed at the rear of the housing 10, close to the connector 53. This results in a shorter wiring length between the power distribution device 31 and the connector 53, facilitating easy wiring. Specifically, because the power distribution device 31 is close to the connector 53, the high-voltage connection assembly 50 connecting the power distribution device 31 and the connector 53 is shorter, thus it does not need to be installed in the base plate 11 and is less susceptible to impact or compression from the battery module 20. Therefore, of the two high-voltage connection assemblies 50 and 55, only one requires complex installation work in the base plate 11; the other does not require such complex installation work, thereby facilitating easy wiring and reducing installation time.

[0159] like Figure 4 As shown, a protrusion 13a is provided on the rear upper surface of the upper cover 13 of the housing 10, and the inner side of the protrusion 13a is a recess for accommodating the power distribution device 31. In this embodiment, the power distribution device 31 is positioned close to the connector 53, so that the protrusion 13a accommodating the power distribution device 31 is located at the rear of the housing 10, so that the front of the housing 10 of the battery pack 100 does not have a large protrusion, thereby providing more space in the cabin corresponding to the position of the battery pack 100 for placing passengers' feet.

[0160] Furthermore, the power distribution device 31 is mounted on the battery module 20 from above. In this way, compared with placing the power distribution device 31 in the gap S, the size of the gap S can be reduced, the size of the battery pack 100 in the left-right direction can be reduced, and the energy density of the battery pack 100 can be increased.

[0161] Furthermore, the power distribution device 31 is installed on a single battery module 20. In this way, compared with the power distribution device 31 being connected across two or more battery modules 20, the ease of installation of the power distribution device 31 is improved, the stability of the power distribution device 31 is also improved, and the overall space occupied by the power distribution device 31 is reduced.

[0162] In this embodiment, the power distribution device 31 is installed on a single battery module 20L, which is the rearmost of a plurality of battery modules 20L. Alternatively, as another embodiment, the power distribution device 31 is not limited to being installed on the rearmost battery module 20L, but can also be configured on other rear battery modules 20. Furthermore, as another embodiment, the power distribution device 31 can also be installed on a battery module 20R.

[0163] Figure 22a This is a three-dimensional structural diagram of the combined state of the battery module, power distribution device bracket, and power distribution device involved in this embodiment; Figure 22b yes Figure 22a Top view of the structure; Figure 23 yes Figure 22a A structural diagram illustrating the decomposed state of the structure; Figure 24 This is a three-dimensional structural diagram of the power distribution device support involved in this embodiment.

[0164] like Figure 22a , Figure 22b As shown, the power distribution device 31 is mounted on the battery module 20L via a power distribution device bracket 32. This dedicated bracket for mounting the power distribution device 31 improves its stability.

[0165] like Figure 22a , Figure 24As shown, the power distribution bracket 32 ​​includes a top 321 and sides 322. The top 321 is generally plate-shaped and covers the upper surface of the battery module 20. There are two sides 322, which extend downward from the front and rear ends of the top 321 respectively, and cover the side surfaces of the battery module 20. By forming such a shape, the top 321 of the power distribution bracket 32 ​​fits against the upper surface of the battery module 20, and the sides 322 fit against the side surfaces of the battery module 20. Thus, on the one hand, the connection strength can be improved, and the power distribution device 31 can be kept in a stable position; on the other hand, the structure of the power distribution bracket 32 ​​and the battery module 20 can be made compact, avoiding the power distribution bracket 32 ​​from being too large, reducing the space occupied, and facilitating the miniaturization of the battery pack 100.

[0166] In other embodiments, there may be only one side portion 322.

[0167] In addition, a plurality of mounting holes 32a are provided on the side 322 for mounting the power distribution bracket 32 ​​on the battery module 20.

[0168] More specifically, such as Figure 23 , Figure 25 As shown, the battery module 20 has multiple mounting holes 20b. Figure 15a , Figure 22a As shown, bolt 21 passes through mounting holes 32a and 20b in sequence and is screwed into nut 22 provided in base plate 11. In this way, the power distribution device bracket 32 ​​can be installed on battery module 20 by using the structure (bolt 21, nut 22) that mounts battery module 20 on base plate 11, without the need to set up a separate mounting structure on battery module 20, thereby simplifying the structure and reducing manufacturing costs.

[0169] In this embodiment, mounting hole 32a is positioned above mounting hole 20b. However, in other embodiments, mounting hole 32a may be positioned below mounting hole 20b, meaning that the portion of the power distribution bracket 32 ​​with mounting hole 32a is inserted between battery module 20 and base plate 11. Therefore, the phrase "bolt 21 passes through mounting hole 32a and mounting hole 20b in sequence" does not mean that bolt 21 passes through mounting hole 32a first and then mounting hole 20b, but rather that bolt 21 passes through one of mounting holes 32a and 20b first and then the other.

[0170] In addition, such as Figure 22a , Figure 22b , Figure 23 , Figure 24As shown, a plurality of bolts 33 are provided on the upper surface of the top 321 of the power distribution device bracket 32. The bolts 33 are used to mount the power distribution device 31 onto the power distribution device bracket 32. Specifically, the power distribution device can be mounted onto the power distribution device bracket 32 ​​by passing the bolts 33 through the mounting holes 31a on the power distribution device 31 and screwing nuts 34 onto the protruding portions.

[0171] like Figure 22a , Figure 26 As shown, the power distribution device 31 is provided with terminals 31b, 31c, and 31d, with two terminals each. Terminal 31b is used to electrically connect to the rear connector 53 via the high-voltage connection assembly 55, thereby enabling electrical connection to the rear motor 220; terminal 31c is used to electrically connect to the series-connected battery module 20; and terminal 31d is used to electrically connect to the front connector 52 via the high-voltage connection assembly 50, thereby enabling electrical connection to the front motor 210.

[0172] like Figure 22b As shown, the front-to-back and left-to-right dimensions of the power distribution unit bracket 32 ​​are approximately the same as those of the battery module 20, while the front-to-back and left-to-right dimensions of the power distribution unit 31 are smaller than those of the power distribution unit bracket 32 ​​and the battery module 20. This allows for better positioning of the mounting points of the power distribution unit bracket 32, ensuring a more secure fixation of the bracket above the battery module.

[0173] like Figure 22a , Figure 22b As shown, the power distribution unit 31 is positioned near the right end of the power distribution unit bracket 32 ​​in the left-right direction, that is, near the center of the housing 10 or the base plate 11 in the left-right direction. In this way, the wiring length between the power distribution unit 31 and the connector 53 or the high-voltage wiring harness 51 can be shortened, saving costs and facilitating wiring.

[0174] More specifically, one or more bolts 33 for mounting the power distribution device 31 are provided at the right end of the power distribution device bracket 32, so that the power distribution device 31 can be configured in the left-right direction at the right end of the power distribution device bracket 32.

[0175] In this embodiment, the bolt 33 is fixed to the upper surface of the power distribution device bracket 32 ​​by welding or integral molding, and the power distribution device 31 is installed by screwing the nut 34 from the side of the power distribution device 31. Thus, there is no need to leave space on the lower surface of the top 321 of the power distribution device bracket 32 ​​for installing the nut 34, allowing the top 321 to fit well against the battery module 20, which helps improve the stability of the power distribution device bracket 32 ​​and reduce its space occupation.

[0176] In addition, such as Figure 22a , Figure 22b , Figure 24 As shown, a reinforcing rib 321a is provided on the power distribution device bracket 32. This improves the strength of the power distribution device bracket 32 ​​and enhances the stability of the power distribution device 31. Furthermore, the reinforcing rib 321a is positioned on the top 321, away from the area where the power distribution device 31 is mounted, thereby, for example, enabling the power distribution device 31 to be securely fixed to the power distribution device bracket 32. In this embodiment, there are multiple reinforcing ribs 321a, each extending linearly along the front-back direction. It is understood that other forms of reinforcing ribs can also be provided, such as reinforcing ribs extending along the left-right direction, or curved reinforcing ribs. <Control device and related structure>

[0177] like Figure 3 , Figure 12 , Figure 15a As shown, the control device 41 and low-voltage wiring harness 61 of the BMS (Battery Management System) are disposed in the gap S between the battery module 20L and the battery module 20R inside the housing 10.

[0178] like Figure 5 As shown, within the housing 10, multiple control devices 41A, 41B, and 41C of the battery management system are arranged between battery modules 20L and 20R (in this description, these multiple control devices are collectively referred to as control devices 41 without distinction). Control devices 41A, 41B, and 41C are arranged sequentially from front to back. Control devices 41A, 41B, and 41C can be constructed using ECUs (Electronic Control Units). In this embodiment, control devices 41A and 41B are BICs (Battery Information Collectors), and control device 41C is a BMU (Battery Management Unit). The battery management system comprised of these control devices 41A, 41B, and 41C is used for intelligent management and maintenance of each battery module, preventing overcharging and over-discharging, extending service life, and monitoring battery status.

[0179] It is understood that the number and form of the control devices described above are merely illustrative and do not constitute a limitation on the present invention.

[0180] Figure 28a This is a three-dimensional structural diagram of a control device in this embodiment; Figure 28b This is a side view of the control device; Figure 28c This is a bottom view of the control device; Figure 28dThis is another three-dimensional structural diagram of the control device. (See diagram below.) Figure 15a , Figure 16 , Figure 17 , Figure 28a , Figure 28b , Figure 28c , Figure 28d As shown, the control device 41 is roughly rectangular in shape, with its thickness direction roughly consistent with the left and right directions, its long side arranged along the front and back directions, and its short side arranged along the top and bottom directions.

[0181] Since the thickness direction has the smallest dimension, the short side direction is the second smallest, and the long side direction has the largest dimension, by aligning the thickness direction with the left and right directions, the dimension of the gap S in the left and right directions can be reduced, thus miniaturizing the battery pack 100.

[0182] In addition, by arranging the short side along the vertical direction, compared with arranging the long side along the vertical direction, the height of the control device 41 can be reduced, thereby suppressing the size of the battery pack 100 in the vertical direction, which is beneficial for miniaturization.

[0183] Furthermore, since the gap S is relatively long in the front-back direction (the direction in which multiple battery modules 20L or 20R are arranged), even if the long side of the control device 41 is arranged along the front-back direction, the size of the battery pack 100 in the front-back direction will not increase, which is beneficial for miniaturization.

[0184] like Figure 15a , Figure 17 As shown, the control device 41 is mounted on the high-voltage wiring harness bracket 112 via the control device bracket 42. Thus, by using the high-voltage wiring harness bracket 112 of the high-voltage wiring harness 51 to mount the control device 41, the structure becomes simple and compact, which is beneficial for the miniaturization of the battery pack 100. As an example of the mounting method, in this embodiment, as... Figure 15a As shown, the control device 41 is fixed to the control device bracket 42 by bolts 43.

[0185] like Figure 15a As shown, the control device bracket 42 includes a main body 42a and a base 42b. The main body 42a is erected for mounting the control device 41. The base 42b is bent from the lower end of the main body 42a, extending to the left and right, for mounting on the high-voltage wire harness bracket 112. For example, the base 42b is fixed to the high-voltage wire harness bracket 112 by bolts (not shown). It is understood that the base 42b can also be fixed to the high-voltage wire harness bracket by other means, such as welding.

[0186] Thus, the control device bracket 42 is generally L-shaped (in this embodiment, it is L-shaped when viewed from the rear), which has the technical effect of occupying little space and improving the space utilization rate inside the battery pack 100. In addition, since it has a base portion 42b extending from the lower end of the main body portion 42a in the left and right directions, the control device bracket 42 can be firmly mounted on the high-voltage wiring harness bracket 112.

[0187] like Figure 28c , Figure 28d As shown, the control device 41 has a connector 41e located at the lower part of the control device 41, with the interface facing downwards. In other words, the control device 41 is configured with the connector 41e facing downwards. The connector 65 on the low-voltage wiring harness 61 (described later) plugs into the connector 41e from below to collect voltage, temperature, and other information from the battery module 20. By placing the connector 41e at the lower part of the control device 41, a good waterproof effect is achieved. Specifically, due to the heating and cooling of the battery module 20, condensation easily occurs inside the housing 10, and dew forms on and around the control device 41. It is understood that the dew will flow downwards; therefore, by placing the connector 41e at the lower part of the control device 41, facing downwards, it is possible to prevent water from the dew from flowing into the connector 41e and causing corrosion or other problems.

[0188] Here, "connector 41e facing downwards" means it is not limited to being strictly vertically downwards; it can be tilted downwards, with the angle between connector 41e and the horizontal direction being greater than or equal to 0 degrees and less than or equal to 90 degrees. As other embodiments, this angle can also be greater than or equal to 0 degrees and less than or equal to 10 degrees, or greater than or equal to 0 degrees and less than or equal to 30 degrees, 45 degrees, or 60 degrees. It is understood that the larger the angle with the horizontal direction, the better the waterproofing effect. Alternatively, connector 41e can also have a 0-degree angle with the horizontal direction. Furthermore, in... Figure 28c In the example, the control device 41 has multiple connectors 41e. It can be understood that the number of connectors 41e may vary depending on the function of the control device 41.

[0189] In addition, such as Figure 15a , Figure 17 , Figure 21a As shown, a wire harness fixing part 42c is provided at the midpoint of the main body 42a of the control device bracket 42 in the vertical direction. This wire harness fixing part 42c is used to fix the branch part 612 of the low-voltage wire harness 61, which will be described later. Specifically, the wire harness fixing part 42c extends from the midpoint of the main body 42a in the vertical direction to the front-back direction, and has a through hole. The fitting part of the annular bracket 44, which is fitted on the branch part 612, is inserted into the through hole, thereby fixing the branch part 612 to the wire harness fixing part 42c.

[0190] Thus, on the one hand, since the branch portion 612 of the low-voltage wiring harness 61 is fixed in the middle of the vertical direction of the main body 42a, its position can be kept stable, its connection with the battery module 20 can be kept stable, and the performance of the battery pack 100 can be kept stable. On the other hand, since the low-voltage wiring harness 61 is fixed by the control device bracket 42, the structure can be simplified and made compact. This is beneficial for setting up the control device 41 and the low-voltage connection component 60 in a limited space, and is conducive to the miniaturization of the battery pack 100.

[0191] In this embodiment, the branch 612 that is electrically connected to the battery module 20R on the right side is fixed by the wire harness fixing part 42c.

[0192] like Figure 15a As shown, the control device bracket 42 (base portion 42b) is fixed to the right side of the high-voltage harness bracket 112, and the control device 41 is positioned approximately to the right of the center in the gap S. <Low-voltage connection components and related structures>

[0193] Reference Figure 3 , Figure 12 , Figure 15a As described above, the low-voltage connection assembly 60 is disposed in the gap S between the battery module 20L and the battery module 20R within the housing 10.

[0194] The low-voltage connection assembly 60 includes a low-voltage wiring harness 61 and a low-voltage wiring harness bracket 62, etc. The low-voltage wiring harness 61 is mounted on the base plate 11 via the low-voltage wiring harness bracket 62 on the high-voltage wiring harness bracket 112, and is located above the high-voltage wiring harness bracket 112. Since the low-voltage wiring harness 61 is mounted on the high-voltage wiring harness bracket 112 via the low-voltage wiring harness bracket 62, that is, the low-voltage wiring harness 61 is mounted using the high-voltage wiring harness bracket 112 of the high-voltage wiring harness 51, the structure is simple and compact, which is beneficial to the miniaturization of the battery pack 100. Furthermore, during assembly, the low-voltage wiring harness 61 and the high-voltage wiring harness 51, etc., can be assembled together as a whole, which facilitates assembly.

[0195] In another embodiment, the low-voltage wiring harness bracket 62 can also be directly mounted on the base plate 11.

[0196] like Figure 16As shown, the low-voltage connection assembly 60 is positioned to the left of the control device 41 in the left-right direction. Specifically, the control device 41 is positioned approximately to the right of the center in the gap S, and the low-voltage connection assembly 60 is positioned approximately to the left of the center in the gap S. In the left-right direction, the control device 41 is positioned between the battery module 20R on the right and the low-voltage connection assembly 60 (low-voltage wiring harness 61), while the low-voltage connection assembly 60 is positioned between the control device 41 and the battery module 20L on the left. It is understood that, in other embodiments, the left-right positions of the low-voltage connection assembly 60 and the control device 41 can be interchanged.

[0197] In addition, such as Figure 12 , Figure 16 As shown, the low-voltage connection assembly 60 is positioned lower than the control device 41 in the vertical direction. That is, in this embodiment, the low-voltage connection assembly 60 is positioned to the lower left of the control device 41. Additionally, referring to… Figure 12 , Figure 16 The low-voltage wiring harness 61 has a bend near the reinforcing member 72 of the reinforcing assembly 70. This bend is bent to the right (or convex to the right), causing this portion of the low-voltage wiring harness 61 to be offset to the right relative to its adjacent portion, thereby avoiding interference with the reinforcing member 72. This achieves, for example, the technical effects of preventing interference between the reinforcing member 72 and the low-voltage wiring harness 61, and preventing wear caused by the reinforcing member 72 on the low-voltage wiring harness 61.

[0198] In addition, in this embodiment, the high-voltage connection component 50 is disposed in the receiving portion 113 and the low-voltage connection component 60 is disposed outside the receiving portion 113, thereby, for example, making use of the limited space in the base plate 11 to improve the safety of the battery pack 100 as effectively as possible.

[0199] like Figure 18 As shown, the low-voltage wiring harness 61 includes a main line 611 and multiple branch lines 612. The main line 611 extends in the front-to-back direction. The multiple branch lines 612 are electrically connected to the main line 611. Connectors 65 and 66 are respectively provided at the ends of the multiple branch lines 612. Specifically, the main line 611 and the multiple branch lines 612 are arranged between the control device 41 and the battery module 20, and the connectors 65 are arranged below the control device 41. In this way, more space is available for the connection between the branch lines 612 and the connectors 65, making the branch lines 612 less prone to breakage and extending their lifespan. In addition, only space is needed below the control device 41 for the connectors, and the branch lines 612 do not occupy the space below the control device 41, which can reduce the height of the control device 41 and make the height dimension of the battery pack housing in the part that houses the control device 41 smaller, which helps to miniaturize the battery pack.

[0200] Connector 65 is used to connect to control device 41; connector 66 is used to connect to battery module 20. Since the wiring port 20c of battery module 20 is located at the upper part of battery module 20 and is in a high position, the branch portion 612 with connector 66 extends upward so that connector 66 can be plugged into wiring port 20c of battery module 20.

[0201] Connector 65 is supported on low-voltage harness bracket 62, thereby maintaining a stable position.

[0202] like Figure 18 , Figure 19 As shown, there are two low-voltage harness brackets 62, namely low-voltage harness bracket 62F and low-voltage harness bracket 62R, which are arranged in a front-to-back direction. Low-voltage harness bracket 62F is positioned in front of the reinforcing assembly 70, and low-voltage harness bracket 62R is positioned behind the reinforcing assembly 70. The low-voltage harness brackets 62F and 62R are spaced apart to avoid obstructing the reinforcing assembly 70, thus preventing the reinforcing assembly 70 from creating an opening 72e to avoid the low-voltage harness brackets 62F. Figure 12 The larger size of the low-voltage harness bracket 62R results in a reduction in strength. The rearmost low-voltage harness bracket 62R is relatively longer, corresponding to the low-voltage harness 61 portions of the two control devices 41; the frontmost low-voltage harness bracket 62F is relatively shorter, corresponding to the low-voltage harness 61 portion of one control device 41. Here, the "F" and "R" in the reference numerals "62F" and "62R" are used to indicate "front" and "rear" respectively, and when not distinguishing between front and rear, they are collectively referred to as low-voltage harness bracket 62.

[0203] The low-voltage wiring harness bracket 62 includes a main body 621 and a wiring harness fixing part 623. The main body 621 is plate-shaped and generally horizontally arranged, supporting the main wire part 611 and the connector 65 of the low-voltage wiring harness 61. The wiring harness fixing part 623 extends upward from the left and right ends (left end in this embodiment) of the main body 621 and is used to fix a portion of the plurality of branch wire parts 612 of the low-voltage wiring harness 61. Specifically, it fixes the branch wire part 612 that is electrically connected to the battery module 20L on the left side. Regarding the specific fixing method, for example, a through hole can be provided in the wiring harness fixing part 623, and the fitting part of the annular bracket 64 fitted on the branch wire part 612 can be inserted into the through hole, thereby fixing the branch wire part 612 to the wiring harness fixing part 623.

[0204] In this way, the branch portion 612 of the low-voltage wire harness 61 is fixed at the position of the upwardly extending wire harness fixing portion 623, thereby maintaining its position stability, maintaining its connection with the battery module 20, and making the battery pack 100 perform stably.

[0205] Reference Figure 16The high-voltage harness bracket 112 has an upwardly raised portion 112b, which is located in the vertical direction opposite to the gap between the forward and rearward low-voltage harness brackets 62. The portion of the main line portion 611 of the low-voltage harness 61 between the forward and rearward low-voltage harness brackets 62 is supported by the raised portion 112b and is also fixed to the raised portion 112b. Specifically, the raised portion 112b has a through hole, and the fitting portion of the annular bracket 63, which is fitted on the middle part (specifically the aforementioned curved part) of the main line portion 611, is inserted into the through hole, thereby fixing the main line portion 611 to the high-voltage harness bracket 112.

[0206] Thus, since the main wire portion 611 is supported by the raised portion 112b of the high-voltage wire harness bracket 112 at the position where the low-voltage wire harness bracket 62 cannot provide support, the position of the low-voltage wire harness 61 (main wire portion 611) can be effectively kept stable, thereby improving the safety and performance stability of the battery pack 100.

[0207] The ring supports 44, 63, and 64 can be made of metal or plastic.

[0208] Alternatively, as another embodiment, the low-voltage harness 61 can also be fixed on the high-voltage harness bracket 112. <Reinforced components and related structures>

[0209] like Figures 6-8 As shown, a reinforcing component 70 is provided within the housing 10. This reinforcing component 70 is disposed at the center of the housing 10 in the longitudinal direction and extends along the lateral direction, primarily serving to enhance the strength of the housing 10 in the lateral direction. For example, when the vehicle 200 is subjected to a side impact, the reinforcing component 70 can resist the lateral impact force, suppress deformation of the housing 10, and prevent damage to the battery module 20 within the housing 10 due to the impact. In this embodiment, only one reinforcing component 70 is provided; however, in other embodiments, multiple reinforcing components may be provided, arranged at intervals along the longitudinal direction. In this embodiment, the reinforcing component 70 may also be referred to as a beam.

[0210] In this embodiment, the reinforcing component 70 is supported on the upper surface of the base plate 11, i.e., located above the base plate 11. Therefore, interference between the reinforcing component 70 and the receiving portion 113 or the coolant channel 115 in the base plate 11 can be avoided. Compared to a structure where the reinforcing component is located below the plate 116 or at approximately the same height, it is not necessary to provide clearance portions on the reinforcing component 70 or on the receiving portion 113 and the coolant channel 115 to avoid interference, thereby simplifying the structure and reducing manufacturing costs. Furthermore, as described above, in this embodiment, the receiving portion 113 is formed as an elongated groove extending in the front-rear direction, and the reinforcing component 70 extends in the left-right direction, thus intersecting with the receiving portion 113. Alternatively, the reinforcing component 70 can also be said to extend along the extension direction of the plate 116 or along the upper surface of the plate 116.

[0211] Figure 10 This is a three-dimensional structural diagram of the reinforcing component involved in this embodiment. For example... Figures 6-8 , Figures 10-12 As shown, the reinforcing assembly 70 includes a first connecting member 71, a second connecting member 73, and a reinforcing member 72. The first connecting member 71 is supported on the base plate 11 of the housing 10 and extends from the left side plate 12 towards the center in the left-right direction. The second connecting member 73 is supported on the base plate 11 and extends from the right side plate 12 towards the center in the left-right direction. A gap is provided between the first connecting member 71 and the second connecting member 73. The reinforcing member 72 extends in the left-right direction, connecting between the first connecting member 71 and the second connecting member 73, and has an upwardly convex arched structure to avoid low-voltage wiring harnesses 61 and the like disposed in the gap S. One end of the first connecting member 71 and the second connecting member 73 is connected to the reinforcing member 72, and the other end can be connected to the side plate 12 of the housing 10.

[0212] By providing an arched reinforcing member 72, for example, compared to providing a notch on the reinforcing member 72 to avoid the low-voltage wire harness, the strength of the reinforcing component 70 can be guaranteed while avoiding the low-voltage wire harness 61, etc.

[0213] like Figure 12As shown, the reinforcing member 72 is roughly inverted U-shaped, including an arched portion 72a, an upright portion 72b, and a fixing portion 72c. The arched portion 72a corresponds to the middle part of the U-shape, with both its upper and lower surfaces curving upwards to form an arch. There are two upright portions 72b, extending downwards from the left and right ends of the arched portion 72a, respectively, and are opposite to the first connecting member 71 and the second connecting member 73 in the left-right direction. That is, when viewed in the left-right direction, the upright portion 72b coincides with the first connecting member 71 and the second connecting member 73. Thus, for example, when the vehicle is subjected to a side collision, the upright portion 72b abuts against the first connecting member 71 and the second connecting member 73 from the left and right directions, reliably transmitting the force from one of the first connecting member 71 or the second connecting member 73 to the upper arched portion 72a, and from the arched portion 72a to the other of the first connecting member 71 or the second connecting member 73, thereby effectively improving the overall strength of the reinforcing component 70, that is, improving the ability of the reinforcing component 70 to resist external forces.

[0214] An opening 72e is formed by the inner surfaces of the arched portion 72a and the two upright portions 72b, which accommodates the raised portion 112b of the low-voltage wire harness 61 and the high-voltage wire harness support 112.

[0215] There are two fixing parts 72c, which extend outwards to the left and right from the connection position between the arched part 72a and the upright part 72b, respectively, and are fixed to the first connecting member 71 and the second connecting member 73 by bolts 16d. In this way, for example, when the vehicle is subjected to a side collision, the force can be effectively transferred from the first connecting member 71 or the second connecting member 73 to the arched part 72a, which can effectively improve the overall strength of the reinforcing assembly 70, that is, improve the ability of the reinforcing assembly 70 to resist external forces.

[0216] Bolt 16d is vertically positioned, passing through fixing part 72c, first connecting part 71 and second connecting part 73, and plate 116. A nut 16e is screwed onto the lower end of the bolt, thus fixing not only fixing part 72c to first connecting part 71 and second connecting part 73, but also fixing first connecting part 71 and second connecting part 73 to base plate 11. In this way, by using the structure of fixing first connecting part 71 and second connecting part 73 to base plate 11 to fix reinforcing part 72 to first connecting part 71 and second connecting part 73, the structure is simplified, costs are reduced, and the structure is made more compact, which is beneficial for miniaturizing battery pack 100.

[0217] In addition, multiple grooves 72d are provided on the arched portion 72a and the upright portion 72b. Specifically, the grooves 72d are triangular grooves. Thus, the weight of the reinforcing member 72 is reduced while ensuring its strength.

[0218] In this embodiment, as Figure 12As shown, the lower end 72b1 of the upright portion 72b extends downward into the receiving portion 113. Thus, for example, when the vehicle is subjected to a side impact, the receiving portion 113 undergoes contraction deformation in the left and right direction. At this time, the left and right side walls of the receiving portion 113 (i.e., the left and right side walls of the groove) come into contact with the lower end 72b1 of the upright portion 72b, thereby the reinforcing member 72 bears the external force in the left and right direction, and the strength of the base plate 11 in the left and right direction is improved.

[0219] Additionally, in this embodiment, the side portion of the lower end portion 71b1 and the left and right edges of the receiving portion 113 (the edges of the opening 116a of the plate 116, refer to...) Figure 15b The opening 116a is in contact with the sidewall of the receiving portion 113, thereby reliably improving the strength of the base plate 11 in the left-right direction. Here, the edge of the opening 116a is part of the sidewall of the receiving portion 113. It is understood that the lower end 71b1 of the upright portion 71b can extend further downward to increase the contact area or contactable area with the sidewall of the receiving portion 113, thereby further improving the strength of the base plate 11.

[0220] Furthermore, as described above, the reinforcing member 72 presses against the high-voltage wiring harness bracket 112. Specifically, the lower end 72b1 of the upright portion 72b of the reinforcing member 72 presses against the middle of the main body portion 112a of the high-voltage wiring harness bracket 112 in the longitudinal direction, thereby suppressing the high-voltage wiring harness bracket 112 from moving or deforming in the vertical direction. Moreover, as described above, the reinforcing member 72, through the buffer member 74 (… Figure 21c The lower end 72b1 of the upright part 72b presses against the main body 112a of the high-voltage wire harness bracket 112 via the buffer member 74, thereby suppressing damage to the high-voltage wire harness bracket 112.

[0221] In this embodiment, the reinforcing member 72 and the first connecting member 71 and the second connecting member 73 are formed separately. However, the present invention is not limited to this. For example, the reinforcing member 72 may also be integrally formed with the first connecting member 71 and / or the second connecting member 73.

[0222] Figure 30 This is a schematic diagram of the battery pack structure in another embodiment of the present invention. Figure 30 The difference between the illustrated embodiment and the above embodiment is that, in the above embodiment, an opening 116a is provided on the plate 116, while... Figure 30In this embodiment, a plate 118 (an example of the first plate) is provided instead of plate 116. Plate 118 is approximately equal in size to plate 111 in the left-right direction and has no opening opposite the receiving portion 113. This plate 118 forms the top of the receiving portion 113. Furthermore, the receiving portion 113 extends through the front and / or rear of the base plate 11; that is, in this embodiment, the receiving portion 113 is formed as an elongated hole extending in the front-rear direction. During assembly, the high-voltage wire harness 51 can be inserted into the receiving portion 113 from the front or rear through the opening of the receiving portion 113 (elongated hole). Additionally, in this embodiment, the high-voltage wire harness bracket 112 of the above embodiments is omitted. Furthermore, in this embodiment, with the high-voltage wire harness 51 inserted into the receiving portion 113, the high-voltage wire harness 51 has a portion protruding horizontally from the receiving portion 113. This portion can be fixed to the base plate 11 to secure the high-voltage wire harness 51 to the base plate 11.

[0223] Figures 31a-31f Examples of the base plate and its housing are shown in partial cross-sectional schematic diagrams. Figure 31a In this configuration, the housing 10 of the battery pack 100 has a base plate 18A, in which a receiving portion 181A formed by a cavity is provided. Furthermore, in this structure, the base plate 18A is relatively thick (greater than the vertical dimension of the receiving portion 181B), or a thickened portion can be provided on the base plate 18A, the thickness of which is greater than the thickness of its adjacent portions, and the receiving portion 181A is provided in the thickened portion.

[0224] exist Figure 31b In this structure, the housing 10 has a base plate 18B, and a groove is provided on the upper surface of the base plate 18B, which forms a receiving portion 181B. In this structure, the base plate 18B is relatively thick (greater than the vertical dimension of the receiving portion 181B). Alternatively, a thickening portion can be provided on the base plate 18B, the thickness of which is greater than the thickness of its adjacent portions, and the receiving portion 181B can be provided in the thickening portion. Similarly, a groove (not shown) can also be provided on the lower surface of the base plate 18B, and the receiving portion can also be formed by this groove.

[0225] exist Figure 31cIn the housing 10, there is a base plate 18C, which has plates 182C and 183C. Plates 182C and 183C are arranged vertically opposite each other and spaced apart. A through opening 182C1 is provided on the upper plate 182C. A receiving portion 181C is formed between plates 182C and 183C, and the high-voltage connection assembly 50 can be disposed in the receiving portion 181C through the opening 182C1. With this structure, the lateral dimension of the receiving portion 181C can be large, capable of accommodating a high-voltage connection assembly with a large lateral dimension. Alternatively, the lateral dimension of the opening 182C1 can be smaller than the lateral dimension of the high-voltage connection assembly 50. Similarly, a through opening (not shown) is provided on the lower plate 183C, and a receiving portion can also be formed between plates 182C and 183C.

[0226] exist Figure 31d In the housing 10, there is a base plate 18D, which has plates 182D and 183D, arranged vertically opposite each other and spaced apart. A groove is provided on the upper surface of the upper plate 182D, which appears as a protrusion when viewed from the lower surface of the plate 182D, forming a receiving portion 181D. With this structure, the groove (protrusion) can be considered as a reinforcing rib (similar to a pressing rib) on the plate 182D, thereby improving the strength of both the plate 182D and the base plate 18D.

[0227] In addition, such as Figure 31d As shown, the receiving portion 181D (groove) has an opening 182D1, a partition wall 182D2 and a bottom wall 182D3. The opening 182D1 is provided on the plate 182D. The partition wall 182D2 extends from the left and right edges of the opening 182D1 toward the plate 183D, i.e. downwards. The bottom wall 182D3 is connected between the left and right partition walls 182D2.

[0228] exist Figure 31e In the housing 10, there is a base plate 18E, which has plates 182E and 183E, which are arranged vertically opposite each other and spaced apart. A groove is provided on the lower surface of the lower plate 183E, which appears as a protrusion when viewed from the upper surface of the plate 183E, forming a receiving portion 181E. Furthermore, this protrusion can be spaced apart from or in contact with plate 182E.

[0229] exist Figure 31fIn this structure, the housing 10 has a base plate 18F, which has plates 182F and 183F, arranged vertically opposite each other and spaced apart. A through opening 182F1 is provided on the upper plate 182F, and downwardly extending partition walls 182F2 are provided on the left and right edges of the opening 182F1. Thus, the opening 182F1 and the partition walls 182F2 constitute a receiving portion 181F. That is, the receiving portion 181F has the opening 182F1 and the partition walls 182F2; the opening 182F1 is formed on the plate 182F, and the partition walls 182F2 define the left and right boundaries of the receiving portion 181F. In this structure, the lower end of the partition walls 182F2 can be configured to contact the plate 183F to form a reliable support between the plates 182F and 183F, improving the strength of the base plate 18F in the vertical direction. Similarly, a through opening (not shown) is provided on the lower plate 183F, and upward-extending partition walls are provided on the left and right edges of the opening, so that the opening and partition walls can form a receiving part.

[0230] In addition, the lower end of the partition wall 182F2 can also be in a state of not contacting the plate 183F. When the base plate 18F is subjected to a force in the vertical direction, the partition wall 182F abuts against the plate 183F. Thus, such a partition wall 182F can also improve the strength of the base plate 18F.

[0231] in addition, Figure 31f The structure can be viewed as... Figure 31e The bottom wall of the receiving part 181E in the middle is omitted.

[0232] Figures 31d-31f The structure shown is the same Figure 31a , Figure 31b In comparison, this approach achieves the technical effect of reducing the weight of the base plate while maintaining its strength.

[0233] The following is about Figures 2-29 An assembly method for the battery pack of the illustrated embodiment will be described.

[0234] The assembly method includes the following: S1, fix the battery module 20 on the base plate 11; S2, fix the high voltage harness 51, the low voltage harness 61 and the control device 41 on the high voltage harness bracket 112 to form a whole (referred to as the first component); S3, fix the first component on the base plate 11; S4, the upper cover 13 is fixed relative to the base plate 11 to form the battery pack 100.

[0235] Using the above method, the high-voltage harness 51, the low-voltage harness 61 and the control device 41 are fixed on the high-voltage harness bracket 112 and treated as a first component, thereby making the assembly of the battery pack 100 simple and convenient.

[0236] The order of S1 and S2 is not fixed; S1 can be executed first, followed by S2, or vice versa.

[0237] Optionally, S2 includes: fixing the control device 41 to the high-voltage wire harness bracket 112 via the control device bracket 42; and fixing the low-voltage wire harness 61 to the high-voltage wire harness bracket 112 via the low-voltage wire harness bracket 62.

[0238] Alternatively, the control device 41 can be installed on the control device bracket 42 first, and then on the high-voltage wire harness bracket 112; or the control device 41 bracket can be installed on the high-voltage wire harness bracket 112 first, and then the control device 41 can be installed. The same applies to the low-voltage wire harness 61 and the low-voltage wire harness bracket 62.

[0239] This invention provides a battery pack 100 and a vehicle 200 having the battery pack 100. The battery pack 100 includes: a housing 10, which includes a base plate 11, and a receiving portion 113 is provided in the base plate 11; a battery module 20, which is arranged above the base plate 11; and a high-voltage connection assembly 50, which is electrically connected to the battery module 20 and is housed in the receiving portion 113.

[0240] Additionally, connectors 52 and 53 are respectively provided at the front and rear ends of the housing 10. The power distribution device 31 electrically connects the connectors 52 and multiple battery modules 30, and also electrically connects the connectors 53 and multiple battery modules 30. The power distribution device 31 is positioned above a single battery module 20 and is located closer to the rear connectors 53 than the front connectors 52.

[0241] Additionally, battery module 20 includes a left-side battery module 20L and a right-side battery module 20R, with a gap S between them. Control device 41 is disposed within this gap S. A low-voltage connection assembly 60, electrically connecting battery modules 20L and 20R to control device 41, is also disposed within the gap S. This low-voltage connection assembly 60 is located between control device 41 and battery module 20R, and is positioned below (i.e., diagonally below) control device 41.

[0242] Additionally, a reinforcing assembly 70 is disposed above the base plate 11, extending horizontally. This reinforcing assembly 70 includes a reinforcing member 72, a first connecting member 71, and a second connecting member 73. The reinforcing member 72 includes an arched portion 72a disposed within the gap S, arching upwards, through which the low-pressure connecting assembly 60 passes. One end of the first connecting member 71 and the second connecting member 73 are connected to the reinforcing member 72, and the other end can be connected to the side plate 12 of the housing 10.

[0243] With the structure of this embodiment, for example, when the vehicle is subjected to a side collision, the battery pack 100 deforms and the battery module 20 moves along the extension direction of the base plate 11. However, since the high-voltage connection component 50 is disposed in the base plate 11 below the battery module 20, the battery module 20 is less likely to collide with the high-voltage connection component 50, thereby suppressing the deformation or breakage of the high-voltage connection component 50 and improving the safety and reliability of the battery pack 100.

[0244] In addition, placing the power distribution device 31 above the single-sided battery module 20 not only improves the ease of installation of the power distribution device 31, but also improves the stability of the power distribution device 31, and reduces the overall space occupied by the power distribution device 31, thereby increasing the energy density of the battery pack 100 (by not occupying the middle gap, thus minimizing the width of the battery pack).

[0245] Furthermore, the placement of the power distribution device 31 near the connector 53 reduces the cable length of the high-voltage connection assembly 50, thereby lowering costs. Additionally, the placement of the power distribution device 31 near the connector 53 at the rear of the battery pack eliminates the need for a protrusion at the front of the battery pack housing 10 to accommodate the power distribution device 31, thus providing more space in the passenger compartment corresponding to the battery pack location for passengers' feet.

[0246] Furthermore, by vertically positioning the control device 41 within the gap S, the space of the housing 10 is utilized efficiently, reducing the overall space occupied by the control device 41 in the battery pack 100, increasing the energy density of the battery pack 100, and facilitating assembly.

[0247] In addition, the reinforcing component 70 can strengthen the housing 10 of the battery pack 100, the arched portion 72a can suppress the reduction of the strength of the reinforcing component 70, effectively disperse the force, and better deform and buffer when the battery pack 100 is impacted.

[0248] The terms "first," "second," "third," etc., or similar terms such as module A, module B, and module C used in this document are only used to distinguish similar objects and do not represent a specific ordering of objects. It is understood that, where permissible, a specific order or sequence can be interchanged so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0249] The term "comprising" as used herein should not be construed as limiting itself to the items listed below, and does not exclude other elements or steps. Therefore, it should be interpreted as specifying the presence of the mentioned features, integrals, steps, or components, but does not exclude the presence or addition of one or more other features, integrals, steps, or components, or groups thereof. Thus, the expression "equipment comprising devices A and B" should not be limited to an equipment consisting solely of components A and B.

[0250] The term "an embodiment" or "an embodiment" as used in this specification means that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in at least one embodiment of the invention. Therefore, the terms "in one embodiment" or "in an embodiment" appearing throughout this specification do not necessarily refer to the same embodiment, but may refer to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics can be combined in any suitable manner, as will be apparent to those skilled in the art from this disclosure.

[0251] Furthermore, the above description is merely a preferred embodiment and the technical principles employed in this application. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present application has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that, include: A housing, the housing including a base plate, the base plate having a receiving portion; A battery module is arranged above the base plate and includes a first battery module and a second battery module. There is a gap between the first battery module and the second battery module. When viewed in the vertical direction, the gap coincides with the receiving part. A control device is disposed in the gap; A low-voltage connection assembly electrically connecting the battery module and the control device, and disposed within the gap; A high-voltage connection assembly, electrically connected to the battery module, and housed within the receiving portion. At least a portion of the high-voltage connection assembly is disposed below the plane formed by the highest point of the base plate.

2. The battery pack according to claim 1, characterized in that, The low-voltage connection assembly is located between the control device and the battery module, and is located below the control device.

3. The battery pack according to claim 1, characterized in that, The control device is fixed to the base plate by a control device bracket. The control device bracket includes a main body and a base. The main body is erected relative to the base plate and is equipped with the control device; The base portion is bent from the lower end of the main body portion and mounted on the base plate.

4. The battery pack according to claim 1, characterized in that, The control device is provided with a first connector that is electrically connected to the battery module at one end near the base plate.

5. The battery pack according to claim 4, characterized in that, The low-voltage connection assembly is provided with a second connector, and the first connector is plugged into the second connector.

6. The battery pack according to claim 1, characterized in that, The base plate includes a first plate and a second plate, with the first plate located above the second plate. The battery module is arranged above the first plate, and the receiving portion is provided within the height range between the first plate and the second plate.

7. The battery pack according to claim 1, characterized in that, The base plate is provided with a coolant channel.

8. The battery pack according to claim 1, characterized in that, A reinforcing component is provided above the base plate.

9. The battery pack according to claim 7, characterized in that, The portion of the coolant channel farther from the centerline of the base plate is upstream of the coolant flow, and the portion closer to the centerline of the base plate is downstream of the coolant flow, wherein the centerline extends along the extension direction of the base plate.

10. The battery pack according to claim 6 or 7, characterized in that, The high-voltage connection assembly includes a high-voltage wiring harness and a high-voltage wiring harness bracket. The high-voltage wire harness is disposed in the receiving part, and the high-voltage wire harness bracket covers the high-voltage wire harness from above, forming the top of the receiving part.

11. The battery pack according to claim 10, characterized in that, The low-voltage connection assembly and the control device are located above the high-voltage harness bracket.

12. The battery pack according to claim 10, characterized in that, The low-voltage connection assembly includes a low-voltage wiring harness and a low-voltage wiring harness bracket, wherein the low-voltage wiring harness is fixed on the high-voltage wiring harness bracket by the low-voltage wiring harness bracket.

13. The battery pack according to claim 10, characterized in that, The high-voltage harness includes a sheathing layer and a conductive element disposed within the sheathing layer, the sheathing layer being fixed to the high-voltage harness support.

14. The battery pack according to claim 8, characterized in that, The reinforcing component has an arched portion, which is disposed in the gap.

15. The battery pack according to claim 14, characterized in that, The battery pack also includes a first connecting component and a second connecting component disposed on the base plate. The first connecting component and the second connecting component extend along the extension direction of the base plate, and the two ends of the reinforcing component are respectively fixed to the first connecting component and the second connecting component.

16. A vehicle, characterized in that, The battery pack includes any one of claims 1-15.

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