Battery box and battery pack

Abstract

The invention provides a battery box and a battery pack, the battery box comprises a frame body and a bottom plate assembly, the frame body comprises a containing cavity with a battery bin and an electrical bin, the battery bin is used for containing a battery, and the electrical bin is used for containing an electrical device; the bottom plate assembly comprises a temperature adjusting plate and a bottom protection plate which are arranged in a stacked mode, a flow channel allowing a temperature adjusting medium to flow is formed in the temperature adjusting plate, the plate face of one side of the temperature adjusting plate faces the containing cavity, and the bottom protection plate is arranged on the side, away from the containing cavity, of the temperature adjusting plate. The temperature adjusting plate comprises a connecting part used for being connected with an external pipeline, the connecting part extends out of the outer side face, in the direction from the electrical bin to the battery bin, of the frame body, and the risk that the temperature adjusting medium leaks from the connecting part and the external pipeline and then flows into the containing cavity, and consequently the battery or the electrical device in the containing cavity is short-circuited can be reduced. Meanwhile, the utilization rate of the containing space is improved, and the flowing path from an external pipeline to a runner in the temperature adjusting plate is shortened, so that the temperature adjusting efficiency of the temperature adjusting plate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery box and a battery pack. BACKGROUND

[0002] The bottom of the battery box of the battery pack is usually provided with a temperature adjusting plate, and a joint structure connected with the temperature adjusting plate, the joint structure is used for connecting with an external pipeline to provide a temperature adjusting medium to the temperature adjusting plate through the external pipeline, so that the temperature adjusting plate adjusts the temperature of the battery in the battery box. However, in the related art, the temperature adjusting medium is easy to leak from the part where the joint structure is connected with the external pipeline into the battery box, resulting in a short circuit of the battery or the electrical device in the battery box. SUMMARY

[0003] Embodiments of the present application provide a battery box and a battery pack, which can improve the technical problem that the part where the joint structure of the temperature adjusting plate of the battery box is connected with the external pipeline is easy to leak the temperature adjusting medium into the battery box, resulting in a short circuit of the battery or the electrical device in the battery box.

[0004] Embodiments of the present application also provide a battery box, comprising: a frame, comprising a containing cavity with a battery compartment and an electrical compartment, the battery compartment is used for containing a battery, and the electrical compartment is used for containing an electrical device; a bottom plate assembly, comprising a temperature adjusting plate and a bottom guard plate stacked, the temperature adjusting plate is provided with a flow channel for the temperature adjusting medium to flow, one side surface of the temperature adjusting plate faces the containing cavity, and the bottom guard plate is arranged on the side of the temperature adjusting plate away from the containing cavity; The temperature adjusting plate comprises a connecting portion for connecting with an external pipeline, and the connecting portion protrudes from the outer side surface of the frame along the direction from the electrical compartment to the battery compartment.

[0005] In some embodiments, the outer side surface of the frame along the direction from the electrical compartment to the battery compartment is provided with a fixing structure for connecting with the external pipeline. In this way, the external pipeline can be fixed by the fixing structure, so as to avoid that the connecting portion is deformed due to a large force applied by the external pipeline, and then affect the connection stability between the external pipeline and the connecting portion.

[0006] In some embodiments, the fixing structure includes an adapter pipe connected to the connecting portion, the adapter pipe being used to connect to the external pipeline. Thus, the external pipeline can be connected to the connecting portion via the adapter pipe, thereby enabling communication between the external pipeline and the flow channels within the temperature regulating plate, facilitating the flow of the temperature regulating medium between the external pipeline and the flow channels of the temperature regulating plate. Furthermore, when the external pipeline applies a force to the adapter pipe, the adapter pipe can transfer at least a portion of the force to the frame, reducing the force on the connecting portion and thus decreasing the risk of deformation of the connecting portion.

[0007] In some embodiments, the fixing structure further includes a fixing part connected to the outer side of the frame, the fixing part being connected to the adapter pipe, thereby making the connection between the adapter pipe and the frame more stable and convenient.

[0008] In some embodiments, the adapter pipe includes an inlet pipe and an outlet pipe, which are respectively connected to the connecting portion. Thus, the external pipeline can input the temperature regulating medium into the flow channel of the temperature regulating plate through the inlet pipe, and the temperature regulating medium in the flow channel of the temperature regulating plate can flow back to the external pipeline through the outlet pipe, enabling the recycling of the temperature regulating medium.

[0009] In some embodiments, on a projection plane perpendicular to the direction from the base plate assembly to the frame, the orthographic projection of the fixing structure at least partially overlaps with the orthographic projection of the connecting portion, making the fixing structure closer to the connecting portion and facilitating the connection of the fixing structure to the connecting portion.

[0010] In some embodiments, on a projection plane perpendicular to the direction from the base plate assembly to the frame, the orthographic projection of the bottom guard plate at least partially overlaps with the orthographic projection of the connecting portion. Thus, the bottom guard plate can protect the connecting portion, reducing the risk of deformation due to impact or pressure from external structures.

[0011] In some embodiments, the bottom guard plate includes a protective portion extending out of the outer side of the frame along the direction from the electrical compartment to the battery compartment; on a projection plane perpendicular to the direction from the bottom plate assembly to the frame, the orthographic projection of the protective portion covers the orthographic projection of the connecting portion, thereby improving the protective effect of the bottom guard plate on the connecting portion.

[0012] In some embodiments, an adhesive layer is further provided between the protective part and the connecting part, and the protective part is bonded to the connecting part through the adhesive layer, thereby improving the connection strength between the bottom guard plate and the connecting part.

[0013] This application embodiment also provides a battery pack, including: A battery box, as described above, includes a frame and a base plate assembly. The frame includes a receiving cavity with a battery compartment and an electrical compartment. The battery compartment is used to house batteries, and the electrical compartment is used to house electrical components. The base plate assembly includes a stacked temperature regulating plate and a bottom protective plate. The temperature regulating plate has a flow channel for a temperature regulating medium to flow through. One side of the temperature regulating plate faces the receiving cavity, and the bottom protective plate is located on the side of the temperature regulating plate away from the receiving cavity. The temperature regulating plate includes a connecting portion for connecting to an external pipeline, and the connecting portion extends from the outer side of the frame along the direction from the electrical compartment to the battery compartment. A battery assembly, comprising multiple batteries, is disposed within the battery compartment of the battery box.

[0014] The beneficial effects of the embodiments of this application are as follows: In the embodiments of this application, by having the connection portion of the temperature regulating plate for connecting to external pipelines extend outward from the outer side of the frame along the direction from the electrical compartment to the battery compartment of the receiving cavity, the risk of temperature regulating medium leaking from the connection portion and external pipelines into the receiving cavity, causing a short circuit in the battery or electrical components within the receiving cavity, can be reduced. Simultaneously, avoiding the connection portion occupying receiving space improves the utilization rate of the receiving space. Furthermore, it shortens the flow path from the external pipeline to the internal channels of the temperature regulating plate, improving the temperature regulating efficiency of the temperature regulating plate. Moreover, by positioning the connection portion away from the electrical compartment, the risk of temperature regulating medium leaking from the connection portion or external pipelines entering the electrical compartment and causing a short circuit in the electrical components within the electrical compartment can be further reduced. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of one embodiment of the battery pack provided in this application. Figure 2 This is an exploded structural diagram of one embodiment of the battery pack provided in this application. Figure 3 A structural schematic diagram of one embodiment of the frame and mounting beam assembly provided in this application; Figure 4 A cross-sectional view of one embodiment of the edge beam provided in this application, wherein the cutting plane is perpendicular to the second direction; Figure 5A cross-sectional view of one embodiment of the longitudinal beam provided in this application, wherein the cutting plane is perpendicular to the second direction; Figure 6 This is a schematic diagram of a structural embodiment of the longitudinal beam provided in this application. Figure 7 for Figure 3 A cross-sectional view along the AA direction; Figure 8 for Figure 7 Enlarged view of point B in the middle; Figure 9 A partial view of the cross-sectional view of the frame and mounting beam assembly provided in the embodiments of this application, wherein the cutting plane is parallel to the AA direction; Figure 10 for Figure 3 Enlarged view of point A in the middle; Figure 11 A partial enlarged view of the fixing structure, connecting part, and protective part provided in the embodiments of this application; Figure 12 A cross-sectional view of one embodiment of the beam provided in this application, wherein the cutting plane is perpendicular to a first direction; Figure 13 A schematic diagram of the structure of one embodiment of the control component provided in this application; Figure 14 An exploded view of one embodiment of the control component provided in this application; Figure 15 A schematic diagram of the structure of one embodiment of the bracket provided in this application; Figure 16 A schematic diagram of the structure of one embodiment of the base plate assembly provided in this application; Figure 17 for Figure 16 Enlarged view of point C in the middle; Figure 18 This is an exploded structural diagram of the base plate assembly provided in an embodiment of this application; Figure 19 for Figure 18 Enlarged view at point D; Figure 20 A schematic diagram of one embodiment of the bottom guard plate and seal provided in this application; Figure 21 for Figure 20 Enlarged view of point E in the middle.

[0017] Explanation of icon numbers: 1-Battery pack; 10-Battery Box; 11-Frame; 110-Receiving cavity; 1101-Battery compartment; 1102-Electrical compartment; 111-Side beam; 1111-Side beam body; 1112-First cavity; 1113-First sub-cavity; 1114-Second sub-cavity; 1115-First side wall; 1116-First sub-side wall; 1117-First connecting wall; 1118-First support plate; 1119-First connecting flange; 112-Longitudinal beam; 1121-Notch; 1122-Avoidance space; 112 3-Longitudinal beam body; 1124-Second side wall; 1125-Second sub-side wall; 1126-Second connecting wall; 1127-Second connecting flange; 1128-Second cavity; 1129-Third sub-cavity; 1130-Fourth sub-cavity; 1131-Fifth sub-cavity; 1132-Second support plate; 1133-Overlapping wall; 1134-Third connecting flange; 1135-First opening; 113-Front beam; 114-Rear beam; 115-Hanging beam assembly; 1150 - Cavity; 1151- Mounting part; 1152- First mounting plate; 1153- Second mounting plate; 1154- Connecting structure; 1155- First connecting plate; 1156- First curved panel; 1157- Second curved panel; 1158- Third curved panel; 1159- Second connecting plate; 1160- First connecting part; 1161- Second connecting part; 1162- Reinforcing rib; 1163- First abutment surface; 1164- Second abutment surface; 1165- Bending section; 11 66 - First contact point; 1167 - Second contact point; 1168 - Third contact point; 117 - Crossbeam; 1171 - Groove; 1172 - Third cavity; 1173 - Crossbeam body; 1174 - First protrusion; 1175 - Second protrusion; 1176 - Abutment plate; 1177 - First abutment plate; 1178 - Second abutment plate; 118 - Fixing structure; 1181 - Adaptor pipe; 1182 - Input pipe; 1183 - Output pipe; 1184 - Fixing part; 12-Base plate assembly; 121-Bottom guard plate; 1211-Reinforcing structure; 1212-Protrusion; 1213-Buffer protrusion; 1214-Buffer space; 1215-Third opening; 1216-Fixing protrusion; 1217-Allowing cavity; 1218-Fourth opening; 1219-Connecting hole; 1220-First sub-connecting hole; 1221-Second sub-connecting hole; 1222-Mounting groove; 1223-Protective part; 1224-Recessed part; 123-Temperature regulating plate; 1231-Connecting part; 1232-Seal; 1233-Sealing section; 1234-Winding section; 1235-Bending section; 1236-Connecting section; 13-Locking structure; 130-Third abutment part; 131-Third locking element; 132-Connecting element; 14-Control component; 141-Bracket; 1411-Mounting plate; 1412-First through hole; 1413-Second through hole; 1414-Third through hole; 1415-Flanged section; 1416-Edge section; 1417-Second opening; 1418-Flanged; 1419-First flange; 1420-Second flange; 1421-Fixed flange; 1422-First plate surface; 1423-First groove; 1424-Second plate surface; 1425-First protrusion; 1426-Second protrusion; 1427-Abutting surface; 142-First controller; 143-Second controller; 151-First locking element; 1511-First abutting part; 152-Second locking element; 1521-Second abutting part; 16-Cover; 17-Battery assembly; 171-Battery; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0019] This application provides a control component, a base plate assembly, a battery box, and a battery pack. These will be described in detail below.

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the battery pack provided in this application. Figure 2 This is an exploded structural diagram of one embodiment of the battery pack provided in this application. Figure 1 and Figure 2As shown, the battery pack 1 includes a battery case 10 and a battery assembly 17. The battery case 10 encloses a receiving cavity 110, and the battery assembly 17 includes a plurality of batteries 171, which are installed within the receiving cavity 110 of the battery case 10. The receiving cavity 110 includes a battery compartment 1101 and an electrical compartment 1102. The battery compartment 1101 is used to install the batteries 171 of the battery assembly 17, and the electrical compartment 1102 is used to install electrical components. The battery pack 1 may also include a control component 14, which is installed in the electrical compartment 1102. The control component 14 can be used to control the charging, discharging, or other functions of the battery pack 1.

[0021] Continue to refer to Figure 2 The battery case 10 includes a frame 11 that encloses a receiving cavity 110. The battery case 10 also includes a base plate assembly 12, which is disposed on one side of the frame 11. One side of the base plate assembly 12 is opposite to the receiving cavity 110. The base plate assembly 12 can provide support for the battery 171 or other components within the receiving cavity 110. Furthermore, the base plate assembly 12 can cover the receiving cavity 110, keeping the side of the receiving cavity 110 near the base plate assembly 12 sealed. In addition, when the base plate assembly 12 has a temperature regulation function, it can also be used to regulate the temperature of the battery 171, that is, to heat or cool the battery 171.

[0022] Continue to refer to Figure 2 The battery box 10 also includes a cover 16, which is located on the other side of the frame 11. One side of the cover 16 faces the receiving cavity 110. The cover 16 can cover the receiving cavity 110, keeping the side of the receiving cavity 110 near the cover 16 sealed. When the battery pack 1 is in normal use, the bottom plate assembly 12 of the battery box 10 is located at the bottom of the battery box 10. The cover 16 of the battery box 10 is located at the top of the battery box 10.

[0023] like Figure 3 As shown, the frame 11 includes two side beams 111 and at least one longitudinal beam 112. The two side beams 111 are distributed along a first direction X on both sides of the receiving cavity 110, and the side beams 111 extend along a second direction Y, which forms an angle with the first direction X. At least one longitudinal beam 112 is located within the receiving cavity 110, and the longitudinal beam 112 extends along the second direction Y. It should be noted that the angle formed by the first direction X and the second direction Y can be a right angle or an acute angle, and is not limited here.

[0024] Specifically, the yield strength of at least one side beam 111 can be lower than that of the longitudinal beam 112. This allows at least one side beam 111 to have a relatively low yield strength, improving its cushioning effect after being subjected to compression or impact, and reducing the risk of vibration and displacement of the battery 171 within the receiving cavity 110 caused by the side beam 111. Simultaneously, the longitudinal beam 112 can have a relatively high yield strength, facilitating its restraint of the battery 171 within the receiving cavity 110, further reducing the risk of vibration and displacement of the battery 171 within the receiving cavity 110.

[0025] like Figure 4 As shown, at least one side beam 111 can include a side beam body 1111 and a first support plate 1118. The side beam body 1111 includes two first side walls 1115 that are spaced apart from each other along the first direction X. The first support plate 1118 is connected between the two first side walls 1115. Thus, the two first side walls 1115 can be supported by the first support plate 1118 to improve the yield strength of the side beam 111 in the first direction X, so that the side beam 111 has a better compressive strength in the first direction X.

[0026] At least one side beam 111 can be formed by rolling steel welding to improve the material utilization rate of the side beam 111 and reduce the cost of the side beam 111.

[0027] In some embodiments, the side beam body 1111 includes a first cavity 1112 located between two first side walls 1115. The side beam body 1111 includes two first connecting walls 1117 distributed along a third direction Z on both sides of the first cavity 1112, each first connecting wall 1117 connecting between the two first side walls 1115. The two first connecting walls 1117 are integrally formed with the two first side walls 1115. The first side wall 1115 is a strip-shaped plate structure extending along a second direction Y. The side surface of the first side wall 1115 is set at an angle to the first direction X. The first connecting wall 1117 is a strip-shaped plate structure extending along the second direction Y. The side surface of the second connecting wall 1126 is set at an angle to the third direction Z. A first support plate 1118 is located between the two first connecting walls 1117. The side surface of the first support plate 1118 is set at an angle to the third direction Z. The first support plate 1118 is spaced apart from the two first connecting walls 1117. The first support plate 1118 is a strip plate extending along the second direction Y. The first direction X, the second direction Y, and the third direction Z are arranged at angles to each other. The angles formed by the first direction X, the second direction Y, and the third direction Z can be right angles or acute angles, and are not limited here.

[0028] In some embodiments, one of the two first sidewalls 1115 includes two first sub-sidewalls 1116 distributed along a third direction Z. The edges of the two first sub-sidewalls 1116 that are far apart from each other are connected to two first connecting walls 1117 in a one-to-one correspondence. The edges of the two first sub-sidewalls 1116 that are close to each other overlap in the first direction X to facilitate a stable connection between the edges of the two first sub-sidewalls 1116 that are close to each other. Specifically, the edges of the two first sub-sidewalls 1116 that are close to each other overlap and are welded together in the first direction X to improve the connection stability of the two first sub-sidewalls 1116.

[0029] In some embodiments, one end of one of the two first sub-sidewalls 1116, near the other, is located on the side of the other first sub-sidewall 1116 facing the first cavity 1112, and is connected to one edge of the first support plate 1118 along the first direction X. The first support plate 1118 is provided with a first connecting flange 1119 along the other edge of the first direction X. The side of the first connecting flange 1119 is stacked with the other of the two first sidewalls 1115 and welded together.

[0030] Continue to refer to Figure 4 The side beam body 1111 includes a first cavity 1112 located between two first side walls 1115. A first support plate 1118 divides the first cavity 1112 into a first sub-cavity 1113 and a second sub-cavity 1114 distributed along a third direction Z. The second sub-cavity 1114 is closer to the bottom of the battery box 10 than the first sub-cavity 1113. The first direction X, the second direction Y, and the third direction Z form an angle with each other. The height of the first sub-cavity 1113 in the third direction Z is h1, and the height of the second sub-cavity 1114 in the third direction Z is h2. In some embodiments, the height h1 of the first sub-cavity 1113 in the third direction Z and the height h2 of the second sub-cavity 1114 in the third direction Z can satisfy: h1 ≤ h2. Therefore, the first sidewall 1115 corresponding to the side beam 111 and the second sub-cavity 1114 can be connected to the mounting beam assembly 115, which is beneficial to improving the connection strength and connection stability between the side beam 111 and the mounting beam assembly 115.

[0031] In some embodiments, the height h1 of the first sub-cavity 1113 in the third direction Z and the height h2 of the second sub-cavity 1114 in the third direction Z can satisfy: 0.3≤h1 / h2≤1. This improves the connection strength and stability between the side beam 111 and the mounting beam assembly 115, while also enhancing the yield strength of the second support plate 1132 on the side beam 111.

[0032] The ratio of the height h1 of the first sub-cavity 1113 in the third direction Z to the height h2 of the second sub-cavity 1114 in the third direction Z can be 0.34, 0.4, 0.45, 0.51, 0.58, 0.6, 0.7, 0.8, 0.9, etc., and is not limited here.

[0033] In some preferred embodiments, the height h1 of the first sub-cavity 1113 in the third direction Z can be 2.76 cm. The height h2 of the second sub-cavity 1114 in the third direction Z can be 5.38 cm.

[0034] In some embodiments, such as Figure 5 As shown, at least one longitudinal beam 112 can include a longitudinal beam body 1123 and a second support plate 1132. The longitudinal beam body 1123 includes two second sidewalls 1124 that are spaced apart from each other along the first direction X. The second support plate 1132 is connected between the two second sidewalls 1124. Thus, the two second sidewalls 1124 can be supported by the second support plate 1132 to improve the yield strength of the longitudinal beam 112 in the first direction X, so that the longitudinal beam 112 has a better anti-compression effect in the first direction X.

[0035] The number of second support plates 1132 of at least one longitudinal beam 112 can be greater than the number of first support plates 1118 of at least one side beam 111. This allows the yield strength of at least one longitudinal beam 112 to be greater than the yield strength of at least one side beam 111.

[0036] It is understandable that the more second support plates 1132 there are within the longitudinal beam 112, the better the support effect of the second support plates 1132 on the two second sidewalls 1124 of the longitudinal beam 112, which is beneficial to improving the yield strength of the longitudinal beam 112 and giving the longitudinal beam 112 better resistance to compression in the first direction X. Therefore, when the number of second support plates 1132 within the longitudinal beam 112 is greater than the number of first support plates 1118 in the side beam 111, it is beneficial to make the yield strength of the longitudinal beam 112 greater than that of the side beam 111.

[0037] At least one longitudinal beam 112 can be formed by rolling steel welding to improve the material utilization rate of the longitudinal beam 112 and reduce the cost of the longitudinal beam 112.

[0038] In some embodiments, the longitudinal beam body 1123 includes a second cavity 1128 located between two second sidewalls 1124. The longitudinal beam body 1123 includes two second connecting walls 1126 distributed along a third direction Z on both sides of the second cavity 1128, each second connecting wall 1126 connecting between the two second sidewalls 1124. The two second connecting walls 1126 are integrally formed with the two second sidewalls 1124. The second sidewall 1124 is a strip-shaped plate structure extending along a second direction Y. The side surface of the second sidewall 1124 forms an angle with the second direction Y. The second connecting wall 1126 is a strip-shaped plate structure extending along the second direction Y. The side surface of the second connecting wall 1126 forms an angle with the third direction Z. A plurality of second support plates 1132 are located between the two second connecting walls 1126. The plurality of second support plates 1132 are spaced apart along the third direction Z. The second support plates 1132 are spaced apart from the two second connecting walls 1126. The side of the second support plate 1132 is set at an angle to the third direction Z. The second support plate 1132 is a strip plate extending along the second direction Y.

[0039] In some embodiments, one of the two second sidewalls 1124 includes two second sub-sidewalls 1125 distributed along a third direction Z. The edges of the two sub-sidewalls 1125 that are far apart from each other are connected to two corresponding second connecting walls 1126. One end of one sub-sidewall 1125, away from its corresponding second connecting wall 1126, is connected to a second connecting flange 1127 extending toward the second cavity 1128. The other sub-sidewall 1125, away from its corresponding second connecting portion 1161, is connected to one edge of one of the second support plates 1132 along a first direction X. One of the second support plates 1132 and the second connecting flange 1127 overlap and are welded together in the third direction Z.

[0040] One of the second support plates 1132 has an overlapping wall 1133 connected to its edge away from the second sub-side wall 1125. This overlapping wall 1133 overlaps with and is welded to the other of the two second side walls 1124. The overlapping wall 1133 is connected to the other second support plate 1132 along a third direction Z, away from one of the second support plates 1132. The other second support plate 1132 has a third connecting flange 1134 connected to its edge away from the overlapping wall 1133. This third connecting flange 1134 overlaps with and is welded to the second sub-side wall 1125, which is connected to the second connecting flange 1127.

[0041] Continue to refer to Figure 5The longitudinal beam 112 includes a second cavity 1128 located between two second side walls 1124. At least one longitudinal beam 112 includes two second support plates 1132 that are relatively spaced apart along the third direction Z. The two second support plates 1132 divide the second cavity 1128 into a third sub-cavity 1129, a fourth sub-cavity 1130, and a fifth sub-cavity 1131 that are sequentially close to the bottom of the battery box 10 along the third direction Z. The first direction X, the second direction Y, and the third direction Z form an angle with each other.

[0042] Wherein, the height of the third sub-cavity 1129 in the third direction Z is h3, the height of the fourth sub-cavity 1130 in the third direction Z is h4, and the height of the fifth sub-cavity 1131 in the third direction Z is h5. In some embodiments, the heights h3 of the third sub-cavity 1129 in the third direction Z, h4 of the fourth sub-cavity 1130 in the third direction Z, and h5 of the fifth sub-cavity 1131 in the third direction Z can satisfy: h5≤h4≤h3. This is beneficial to improving the yield strength of the region of the longitudinal beam 112 near the bottom of the battery box 10, thereby improving the overall yield strength of the frame 11.

[0043] In some embodiments, the height h3 of the third sub-cavity 1129 in the third direction Z and the height h4 of the fourth sub-cavity 1130 in the third direction Z can satisfy: 0.8 ≤ h4 / h3 ≤ 1. This avoids the second support plate 1132 between the third sub-cavity 1129 and the fourth sub-cavity 1130 being too close to the bottom of the battery box 10, thus affecting the reinforcing effect of the second support plate 1132 on the longitudinal beam 112 and causing insufficient yield strength in the area of ​​the longitudinal beam 112 away from the bottom of the box.

[0044] The ratio of the height h3 of the third sub-cavity 1129 in the third direction Z to the height h4 of the fourth sub-cavity 1130 in the third direction Z can be 0.82, 0.85, 0.88, 0.9, 0.93, 0.97, etc., and no restriction is imposed here.

[0045] In some embodiments, the height h3 of the third sub-cavity 1129 in the third direction Z and the height h5 of the fifth sub-cavity 1131 in the third direction Z can satisfy: 0.7 ≤ h5 / h3 ≤ 1. This avoids the second support plate 1132 between the fourth sub-cavity 1130 and the fifth sub-cavity 1131 being too close to the bottom of the battery box 10, thus affecting the reinforcing effect of the second support plate 1132 on the longitudinal beam 112 and preventing insufficient yield strength in the area of ​​the longitudinal beam 112 away from the bottom of the box.

[0046] The ratio of the height h3 of the third sub-cavity 1129 in the third direction Z to the height h5 of the fifth sub-cavity 1131 in the third direction Z can be 0.72, 0.76, 0.8, 0.82, 0.85, 0.88, 0.9, 0.93, 0.97, etc., and no restriction is imposed here.

[0047] In some preferred embodiments, the height h3 of the third sub-cavity 1129 in the third direction Z can be 3.16 cm. The height h4 of the fourth sub-cavity 1130 in the third direction Z can be 2.48 cm. The height h5 of the fifth sub-cavity 1131 in the third direction Z can be 2.38 cm.

[0048] In some embodiments, a first cavity 1112 is formed within the side beam 111, which allows the wall thickness of the side beam 111 to be greater than or equal to 1 mm and less than or equal to 1.4 mm, thereby giving the side beam 111 a higher yield strength, and the yield strength of the side beam 111 being less than the yield strength of the longitudinal beam 112. The wall thickness of the side beam 111 can be 1.1 mm, 1.15 mm, 1.2 mm, 1.3 mm, etc., and is not limited here.

[0049] In other embodiments, the yield strength of the sidewall of the edge beam 111 can be greater than or equal to 360 MPa and less than or equal to 1000 MPa, thereby giving the edge beam 111 a higher yield strength, and the yield strength of the edge beam 111 being less than the yield strength of the longitudinal beam 112. The yield strength of the sidewall of the edge beam 111 can be 400 MPa, 450 MPa, 480 MPa, 500 MPa, 600 MPa, 800 MPa, 900 MPa, etc., and is not limited here.

[0050] In some embodiments, the width W1 of the side beam 111 in the first direction X is greater than or equal to 2 cm and less than or equal to 3.5 cm, thereby giving the side beam 111 higher yield strength and better cushioning effect. The width W1 of the side beam 111 in the first direction X can be 2.2 cm, 2.7 cm, 3 cm, 3.2 cm, 3.4 cm, etc., and is not limited here.

[0051] In some embodiments, the length of the side beam 111 in the second direction Y can be greater than or equal to 1.2 meters and less than or equal to 1.6 meters, so that the side beam 111 has higher yield strength and better buffering effect. The length of the side beam 111 in the second direction Y can be 1.25 meters, 1.3 meters, 1.37 meters, 1.4 meters, 1.5 meters, etc., and is not limited here.

[0052] In some embodiments, the height H1 of the edge beam 111 in the third direction Z can be greater than or equal to 7.5 cm and less than or equal to 9.5 cm, so that the edge beam 111 has higher yield strength and better buffering effect, and the first direction X, the second direction Y and the third direction Z form an angle with each other. The height H1 of the edge beam 111 in the third direction Z can be 7.7 cm, 7.9 cm, 8 cm, 8.5 cm, 9 cm, etc., and is not limited here.

[0053] In some embodiments, a second cavity 1128 is formed within the longitudinal beam 112. The wall thickness of the longitudinal beam 112 is greater than or equal to 1 mm and less than or equal to 1.4 mm, thereby giving the longitudinal beam 112 a higher yield strength, and the yield strength of the longitudinal beam 112 is greater than the yield strength of the crossbeam 117. The wall thickness of the longitudinal beam 112 can be 1.1 mm, 1.15 mm, 1.2 mm, 1.3 mm, etc., and is not limited here.

[0054] In other embodiments, the yield strength of the sidewall of the longitudinal beam 112 can be greater than or equal to 360 MPa and less than or equal to 1000 MPa, thereby giving the longitudinal beam 112 a higher yield strength, and the yield strength of the longitudinal beam 112 is greater than that of the transverse beam 117. The yield strength of the sidewall of the longitudinal beam 112 can be 400 MPa, 450 MPa, 480 MPa, 500 MPa, 600 MPa, 800 MPa, 900 MPa, etc., and is not limited here.

[0055] In some embodiments, the width W2 of the longitudinal beam 112 in the first direction X is greater than or equal to 2 cm and less than or equal to 3.5 cm, so that the longitudinal beam 112 has a higher yield strength and reduces the space occupied by the longitudinal beam 112 in the receiving cavity 110. The width W2 of the longitudinal beam 112 in the first direction X can be 2.2 cm, 2.7 cm, 3 cm, 3.2 cm, 3.4 cm, etc., and is not limited here.

[0056] In some embodiments, the length of the longitudinal beam 112 in the second direction Y can be greater than or equal to 1 meter and less than or equal to 1.3 meters to give the longitudinal beam 112 a higher yield strength. The length of the longitudinal beam 112 in the second direction Y can be 1.03 meters, 1.08 meters, 1.1 meters, 1.15 meters, 1.2 meters, 1.27 meters, etc., and is not limited here.

[0057] In some embodiments, the height H2 of the longitudinal beam 112 in the third direction Z can be greater than or equal to 7.5 cm and less than or equal to 9.5 cm, so that the longitudinal beam 112 has a higher yield strength and reduces the space occupied by the longitudinal beam 112 in the receiving cavity 110. The first direction X, the second direction Y and the third direction Z form an angle with each other. The height H2 of the longitudinal beam 112 in the third direction Z can be 7.7 cm, 7.9 cm, 8 cm, 8.5 cm, 9 cm, etc., and is not limited here.

[0058] In some embodiments, such as Figure 6 As shown, a notch 1122 can be formed at at least one end of the longitudinal beam 112, so that the end face of the longitudinal beam 112 extends to the side of the longitudinal beam 112 away from the bottom of the battery box 10 to form a clearance portion 1121. Thus, a clearance space 1122 can be formed on the side of at least one end of the longitudinal beam 112 away from the bottom of the battery box 10 to avoid the connection portions 1231 such as copper busbars inside the battery box 10.

[0059] It should be noted that notches 1121 can be formed at both ends of the longitudinal beam 112, or notches 1121 can be formed at one end of the longitudinal beam 112.

[0060] In some embodiments, the notch 1122 can be an inclined notch or a right-angle notch, which makes the processing of the notch 1122 more convenient, and the notch can effectively avoid connecting parts such as copper busbars.

[0061] In some embodiments, the longitudinal beam 112 includes a longitudinal beam body 1123 and a second support plate 1132. The longitudinal beam body 1123 includes two second sidewalls 1124 spaced apart along a first direction X. The second support plate 1132 is connected between the two second sidewalls 1124. The height H5 of the notch 1122 in the third direction Z is less than the distance between the surface of the longitudinal beam 112 away from the bottom of the battery box 10 and the surface of the second support plate 1132 away from the bottom of the battery box 10. The first direction X, the second direction Y, and the third direction Z form an angle with each other. The two second sidewalls 1124 and the second support plate 1132 together form a clearance portion 1121. Thus, the notch 1122 can be separated from the space of the longitudinal beam 112 on the side of the second support plate 1132 facing the bottom of the battery box 10 by the second support plate 1132, preventing metal debris in the space of the longitudinal beam 112 on the side of the second support plate 1132 facing the bottom of the battery box 10 from falling into the battery and causing a short circuit.

[0062] In some embodiments, a sealing element may be provided between the cavity of the longitudinal beam 112 and the notch 1122 to seal the cavity of the longitudinal beam 112. This prevents metal debris inside the cavity of the longitudinal beam 112 from falling into the battery through the notch 1122 and causing a short circuit in the battery.

[0063] Specifically, the frame 11 includes a plurality of longitudinal beams 112 spaced apart along a first direction X. The plurality of longitudinal beams 112 divide the receiving cavity 110 into a plurality of subspaces arranged along the first direction X. The plurality of batteries 171 of the battery assembly 17 are distributed in the plurality of subspaces. One end of the plurality of longitudinal beams 112 is connected to a rear beam 114 on one side of the frame 11 along a second direction Y, and the other end of the plurality of longitudinal beams 112 is connected to a crossbeam 117.

[0064] In some embodiments, such as Figure 5 , Figure 6 and Figure 10 As shown, a second cavity 1128 is formed within the longitudinal beam 112, and at least one end of the longitudinal beam 112 has a first opening 1135 communicating with the second cavity 1128. A portion of the first opening 1135 is formed in the clearance portion 1121. The battery box 10 may also include a sealing member (not shown) connected to the longitudinal beam 112 and disposed at the first opening 1135.

[0065] Understandably, the presence of a clearance portion 1121 at the end of the longitudinal beam 112 results in a relatively large size for the first opening 1135, with a portion of the first opening 1135 facing away from the bottom of the battery compartment 10. Consequently, parts or other objects may easily fall through the first opening 1135 into the second cavity 1128, or metal debris from the second cavity 1128 may fall into the battery through the first opening 1135. Therefore, sealing the first opening 1135 with a sealing member effectively prevents these situations from occurring.

[0066] The second cavity 1128 of the longitudinal beam 112 extends through the longitudinal beam 112 along the second direction Y. The sealing component can be formed by the curing of glue, or it can be a component made of materials such as silicone or rubber.

[0067] like Figure 3 , Figure 7 and Figure 8 As shown, the battery box 10 also includes a mounting beam assembly 115, which is connected to one side of the frame 11 along the first direction X. The mounting beam assembly 115 is used to connect to an external structure, thereby mounting the battery box 10 to the external structure. There are two mounting beam assemblies 115. The two mounting beam assemblies 115 are connected to both sides of the frame 11 along the first direction X. The mounting beam assemblies 115 extend along the second direction Y to increase the connection length between the mounting beam assembly 115 and the frame 11.

[0068] In some embodiments, the battery box 10 further includes a mounting beam assembly 115 connected to the side beam 111 on the side opposite to the receiving cavity 110, wherein the center of gravity of the mounting beam assembly 115 is closer to the bottom of the battery box 10 than the center of gravity of the side beam 111. This reduces the height of the center of gravity of the mounting beam assembly 115 and improves the stability of the mounting beam assembly 115 in supporting the frame 11 of the battery box 10.

[0069] Specifically, the height difference between the center of gravity of the mounting beam assembly 115 and the center of gravity of the side beam 111 can be greater than or equal to 1 cm and less than or equal to 4 cm, so that the center of the mounting beam assembly 115 is as low as possible while making the connection between the mounting beam assembly 115 and the frame 11 of the battery box 10 more convenient.

[0070] The height difference between the center of gravity of the mounting beam assembly 115 and the center of gravity of the side beam 111 can be 1.3 cm, 1.5 cm, 1.9 cm, 2 cm, 2.4 cm, 2.6 cm, 3 cm, 3.5 cm, etc., and there is no restriction here.

[0071] In some embodiments, the mounting beam assembly 115 may include a first mounting plate 1152 and a second mounting plate 1153 stacked along a third direction Z, wherein the first direction X, the second direction Y and the third direction Z form an angle with each other.

[0072] The side beam 111 connected to the mounting beam assembly 115 includes a side beam body 1111 and a first support plate 1118. The side beam body 1111 includes two first side walls 1115 that are spaced apart from each other along the first direction X. The first support plate 1118 is connected between the two first side walls 1115.

[0073] The junction of the first mounting plate 1152 and the second mounting plate 1153 is closer to the bottom of the battery box 10 than the first support plate 1118; the height difference H3 between the junction of the first mounting plate 1152 and the second mounting plate 1153 and the first support plate 1118 is greater than or equal to 1 cm and less than or equal to 4 cm. This lowers the center of gravity of the mounting beam assembly 115, improves the stability of the mounting beam assembly 115 in supporting the frame 11 of the battery box 10, and facilitates the connection between the mounting beam assembly 115 and the frame 11 of the battery box 10.

[0074] The height difference H3 between the junction of the first mounting plate 1152 and the second mounting plate 1153 and the first support plate 1118 can be 1.3 cm, 1.5 cm, 1.9 cm, 2 cm, 2.4 cm, 2.6 cm, 3 cm, 3.5 cm, etc., and there is no restriction here.

[0075] In other embodiments, the mounting beam assembly 115 includes a mounting portion 1151 for connection to an external structure. The mounting portion 1151's mid-plane P1 in the third direction Z is positioned closer to the bottom of the battery box 10 than the mid-plane P2 of the side beam 111 in the third direction Z, with the first direction X, the second direction Y, and the third direction Z forming an angle with each other. This lowers the center of gravity of the mounting beam assembly 115 and improves its support stability for the battery box 10's frame 11.

[0076] It should be noted that the mid-plane P1 of the mounting part 1151 in the third direction Z refers to the mid-plane between the farthest point and the nearest point of the mounting part 1151 from the bottom of the battery box 10 in the third direction Z, and the distance between the farthest point of the mounting part 1151 from the bottom of the battery box 10 in the third direction Z and the mid-plane P1 of the mounting part 1151 in the third direction Z is equal.

[0077] Similarly, the mid-plane P2 of the side beam 111 in the third direction Z refers to the mid-plane between the point farthest from the bottom of the battery box 10 and the point closest to the side beam 111 in the third direction Z, and the distance between the point farthest from the bottom of the battery box 10 and the mid-plane P2 of the side beam 111 in the third direction Z is equal.

[0078] In some embodiments, the height difference between the mid-plane P1 of the mounting part 1151 in the third direction Z and the mid-plane P2 of the side beam 111 in the third direction Z can be greater than or equal to 1 cm and less than or equal to 4 cm, so that the center of the mounting beam assembly 115 is as low as possible while making the connection between the mounting beam assembly 115 and the frame 11 of the battery box 10 more convenient.

[0079] The height difference between the mid-plane P1 of the mounting part 1151 in the third direction Z and the mid-plane P2 of the side beam 111 in the third direction Z can be 1.3 cm, 1.5 cm, 1.9 cm, 2 cm, 2.4 cm, 2.6 cm, 3 cm, 3.5 cm, etc., and there is no restriction here.

[0080] like Figure 8 As shown, the side beam 111 connected to the mounting beam assembly 115 includes a side beam body 1111 and a first support plate 1118. The side beam body 1111 includes two first side walls 1115 that are spaced apart from each other along the first direction X. The first support plate 1118 is connected between the two first side walls 1115.

[0081] In some embodiments, the mounting beam assembly 115 may include a first connecting portion 1160 and a second connecting portion 1161, which are respectively connected to the side wall of the side beam 111 on the side away from the receiving cavity 110. The first connecting portion 1160 is further away from the bottom of the battery box 10 than the second connecting portion 1161, and the orthographic projections of the first connecting portion 1160 and the first support plate 1118 on a projection plane perpendicular to the first direction X overlap. As a result, the center of gravity of the mounting beam assembly 115 can be made closer to the bottom of the battery box 10 than the center of gravity of the side beam 111.

[0082] Specifically, the height difference between the mid-plane P3 of the first connecting part 1160 in the third direction Z and the mid-plane P4 of the first support plate 1118 in the third direction Z can be less than or equal to 1 cm, so that the center of gravity of the mounting beam assembly 115 is closer to the bottom of the battery box 10 than the center of gravity of the side beam 111, while the center of the side beam 111 is also as close as possible to the bottom of the battery box 10.

[0083] The height difference between the mid-plane P3 of the first connecting part 1160 in the third direction Z and the mid-plane P4 of the first support plate 1118 in the third direction Z can be 0 cm, 0.2 cm, 0.5 cm, 0.7 cm, 0.9 cm, etc., and is not limited here.

[0084] It should be noted that the mid-plane P3 of the first connecting part 1160 in the third direction Z refers to the mid-plane between the farthest point and the nearest point of the first connecting part 1160 from the bottom of the battery box 10 in the third direction Z, and the distance between the farthest point of the first connecting part 1160 from the bottom of the battery box 10 in the third direction Z and the mid-plane P3 of the first connecting part 1160 in the third direction Z is equal.

[0085] The mid-plane P4 of the first support plate 1118 in the third direction Z refers to the mid-plane between the farthest point and the nearest point of the first support plate 1118 from the bottom of the battery box 10 in the third direction Z, and the distance between the farthest point of the first support plate 1118 from the bottom of the battery box 10 in the third direction Z and the mid-plane P4 of the first support plate 1118 in the third direction Z is equal.

[0086] Specifically, the first connecting portion 1160 and the second connecting portion 1161 are plate-shaped. The sides of the first connecting portion 1160 and the second connecting portion 1161 are opposite to the side of the side beam 111 that is away from the receiving cavity 110. The first connecting portion 1160 and the second connecting portion 1161 are welded to the side beam 111 respectively.

[0087] In some embodiments, such as Figure 9As shown, the surface of the first mounting plate 1152 on the side away from the bottom of the battery box 10 in the third direction Z can be flush with the surface of the first support plate 1118 on the side away from the bottom of the battery box 10 in the third direction Z. The first direction X, the second direction Y and the third direction Z form an angle with each other, so that the center of gravity of the mounting beam assembly 115 is closer to the bottom of the battery box 10 than the center of gravity of the side beam 111, while the height difference between the center of gravity of the mounting beam assembly 115 and the center of gravity of the side beam 11 is not too large.

[0088] In some embodiments, the first connecting portion 1160 can be connected to the first mounting plate 1152, and a reinforcing rib 1162 is provided between the first connecting portion 1160 and the first mounting plate 1152, thereby improving the connection strength between the first connecting portion 1160 and the first mounting plate 1152, and thus improving the strength of the mounting beam assembly 115.

[0089] In some embodiments, such as Figure 3 As shown, the frame 11 also includes a front beam 113 and a rear beam 114 distributed along the second direction Y, with the front beam 113 and rear beam 114 extending along the first direction X, respectively. The electrical compartment 1102 and the battery compartment 1101 are distributed along the second direction Y. The front beam 113 is located on the side of the electrical compartment 1102 opposite to the battery compartment 1101. The rear beam 114 is located on the side of the battery compartment 1101 opposite to the electrical compartment 1102.

[0090] The cavities formed within the front beam 113 and rear beam 114 can have a rectangular cross-sectional shape perpendicular to the first direction X. Alternatively, the cross-sectional shapes of the front beam 113 and rear beam 114 perpendicular to the first direction X can be similar to the cross-sectional shapes of the side beam 111 or longitudinal beam 112 perpendicular to the second direction Y.

[0091] In some embodiments, the wall thickness of the front beam 113 and / or the rear beam 114 may be greater than or equal to 1 mm and less than or equal to 1.4 mm, so as to ensure the yield strength of the front beam 113 and / or the rear beam 114 while reducing the processing difficulty of the front beam 113 and / or the rear beam 114.

[0092] The wall thickness of the front beam 113 and / or the rear beam 114 can be 1.1 mm, 1.15 mm, 1.2 mm, 1.26 mm, 1.3 mm, etc., and is not limited here. The material and processing method of the front beam 113 and / or the rear beam 114 can refer to the material and processing method of the longitudinal beam 112 and the side beam 111, and are not limited here.

[0093] In some embodiments, the length of the front beam 113 and / or the rear beam 114 in the first direction X may be greater than or equal to 0.8 meters and less than or equal to 1.5 meters to give the front beam 113 and / or the rear beam 114 a higher yield strength. The length of the front beam 113 and / or the rear beam 114 in the first direction X may be 0.85 meters, 0.9 meters, 0.97 meters, 1.06 meters, 1.3 meters, etc., and is not limited here.

[0094] In some embodiments, the width of the front beam 113 and / or the rear beam 114 in the second direction Y may be greater than or equal to 2 cm and less than or equal to 3.5 cm, so that the front beam 113 and / or the rear beam 114 have higher yield strength. The width of the front beam 113 and / or the rear beam 114 in the second direction Y may be 2.2 cm, 2.5 cm, 2.85 cm, 3 cm, 3.2 cm, etc., and is not limited here.

[0095] In some embodiments, the height of the front beam 113 and / or the rear beam 114 in the third direction Z can be greater than or equal to 7.5 cm and less than or equal to 9.5 cm to give the front beam 113 and / or the rear beam 114 a higher yield strength. The height of the front beam 113 and / or the rear beam 114 in the third direction Z can be 7.85 cm, 8.2 cm, 8.5 cm, 8.7 cm, etc., and is not limited here.

[0096] In some embodiments, such as Figure 7 and Figure 8 As shown, the battery box 10 includes a frame 11 and a mounting beam assembly 115, with the frame 11 enclosing a receiving cavity 110. The mounting beam assembly 115 is connected to one side of the frame 11 along a first direction X. The mounting beam assembly 115 includes a connecting structure 1154 connected to the frame 11. The connecting structure 1154 has a first abutment surface 1163 and a second abutment surface 1164, both of which abut against the frame 11 and are flush with each other. The connecting structure 1154 includes at least two interconnected curved sections 1165, and the bending directions between adjacent curved sections 1165 are different.

[0097] The battery box 10 provided in this application embodiment makes the first abutment surface 1163 and the second abutment surface 1163 of the connecting structure 1154 of the mounting beam assembly 115 flush with each other and both abut against the frame 11, so that the connecting structure 1154 and the frame 11 enclose a cavity 1150. This reduces stress concentration at the connection between the connecting structure 1154 and the frame 11, and improves the connection strength and stability between the connecting structure 1154 and the frame 11. At the same time, by making the connecting structure 1154 include at least two interconnected bent segments 1165, and the bending directions between adjacent bent segments 1165 are different, the yield strength of the connecting structure 1154 can be improved, thereby improving the connection strength between the connecting structure 1154 and the frame 11.

[0098] In some embodiments, the connecting structure 1154 extends along the second direction Y to increase its length, thereby increasing the connection length between the connecting structure 1154 and the frame 11 and improving the connection strength between them. The connecting structure 1154 and the frame 11 enclose a cavity 1150 extending along the second direction Y, which forms an angle with the first direction X. This allows cavities 1150 to be formed between different parts of the connecting structure 1154 along the second direction Y and the frame 11, further reducing stress concentration at the connection between the connecting structure 1154 and the frame 11 and improving the connection strength.

[0099] In some embodiments, the connection structure 1154 may include a first connecting plate 1155 and a second connecting plate 1159 disposed along a third direction Z. The first direction X, the second direction Y and the third direction Z form an angle with each other. The first connecting plate 1155 and the second connecting plate 1159 are respectively connected to the frame 11 and enclose a cavity 1150.

[0100] The first connecting plate 1155 may include at least two interconnected bent segments 1165, and the bending directions between adjacent bent segments 1165 are different, thereby improving the yield strength of the first connecting plate 1155.

[0101] Of course, the second connecting plate 1159 can also be bent at least partially toward the cavity 1150 or away from the cavity 1150 to increase the yield strength of the second connecting plate 1159.

[0102] It should be noted that the first connecting plate 1155 and the second connecting plate 1159 can be bent simultaneously, or only one of the first connecting plate 1155 and the second connecting plate 1159 can be bent. Of course, the former can further improve the yield strength of the mounting beam assembly 115.

[0103] In some embodiments, a first abutment surface 1163 is disposed on a first connecting plate 1155, and a second abutment surface 1164 is disposed on a second connecting plate 1159. Specifically, on a cross-section of the mounting beam assembly 115 perpendicular to the second direction Y, the endpoint of the first abutment surface 1163 closest to the cavity 1150 is the first contact point 1166, the endpoint of the second abutment surface 1164 closest to the cavity 1150 is the second contact point 1167, and the endpoint of the contact surface of the first connecting plate 1155 and the second connecting plate 1159 closest to the cavity 1150 is the third contact point 1168. The angle θ formed by the line connecting the first contact point 1166 and the third contact point 1168 and the line connecting the second contact point 1167 and the third contact point 1168 is 30°-80°. This further reduces stress concentration at the connection between the mounting beam assembly 115 and the frame 11, which helps improve the stability and service life of the mounting beam assembly 115 during use.

[0104] The angle θ formed by the line connecting the first contact point 1166 and the third contact point 1168 and the line connecting the second contact point 1167 and the third contact point 1168 can be 32°, 35°, 38°, 40°, 43°, 45°, 47°, 50°, 55°, 60°, 63°, 67°, 70°, 75°, etc., and there is no restriction here.

[0105] In some embodiments, the spacing between the first connecting plate 1155 and the second connecting plate 1159 may tend to increase in the direction close to the frame 11. This allows the first connecting plate 1155, the second connecting plate 1159, and the side beam 111 to form an approximately triangular structure, which helps improve the structural stability of the first connecting plate 1155, the second connecting plate 1159, and the side beam 111, thereby improving the connection stability between the mounting beam assembly 115 and the side beam 111.

[0106] The spacing between the first connecting plate 1155 and the second connecting plate 1159 can be gradually increased or stepped along the direction closer to the frame 11, or the spacing between a portion of the first connecting plate 1155 and a portion of the second connecting plate 1159 can be gradually increased or stepped along the direction closer to the frame 11.

[0107] Specifically, the first connecting plate 1155 and the second connecting plate 1159 of the mounting beam assembly 115 are connected to the side of the mounting portion 1151 near the frame 11. The mounting portion 1151 includes a first mounting plate 1152 and a second mounting plate 1153 stacked in a third direction Z. The edge of the first mounting plate 1152 near the frame 11 is connected to the first connecting plate 1155, and the edge of the second mounting plate 1153 near the frame 11 is connected to the second connecting plate 1159. The first mounting plate 1152 and the second mounting plate 1153 can be welded together.

[0108] The connecting structure 1154 includes a first connecting portion 1160 and a second connecting portion 1161. The first connecting plate 1155 is connected to the first connecting portion 1160 on the side near the frame 11, and the second connecting plate 1159 is connected to the second connecting portion 1161 on the side near the frame 11. The first mounting plate 1152, the first connecting plate 1155, and the first connecting portion 1160 can be an integral structure. The second mounting plate 1153, the second connecting plate 1159, and the second connecting portion 1161 can also be an integral structure. The first mounting plate 1152, the first connecting plate 1155, and the first connecting portion 1160 are all strip plates extending along the second direction Y. The second mounting plate 1153, the second connecting plate 1159, and the second connecting portion 1161 are all strip plates extending along the second direction Y.

[0109] In some embodiments, the first connecting plate 1155 may be positioned away from the bottom of the battery box 10 relative to the second connecting plate 1159. The first connecting plate 1155 includes a first curved panel 1156 and a second curved panel 1157 sequentially connected along a direction close to the frame 11. One of the first curved panel 1156 and the second curved panel 1157 is bent in a direction toward the cavity 1150, and the other of the first curved panel 1156 and the second curved panel 1157 is bent in a direction away from the cavity 1150. By making the bending directions of the first curved panel 1156 and the second curved panel 1157 of the first connecting plate 1155 opposite, the structural yield strength of the first connecting plate 1155 can be improved.

[0110] It should be noted that the first curved panel 1156 and the second curved panel 1157 can be arc panels or curved panels with different curvatures; there are no restrictions here.

[0111] In some embodiments, the first curved panel 1156 can be bent in a direction toward the cavity 1150, and the second curved panel 1157 can be bent in a direction away from the cavity 1150, thereby making it easier to bend the first connecting plate 1155. Of course, the first curved panel 1156 can also be bent in a direction away from the cavity 1150, and the second curved panel 1157 can be bent in a direction toward the cavity 1150.

[0112] In some embodiments, the first connecting plate 1155 may further include a third curved panel 1158, which is connected to the end of the second curved panel 1157 away from the first curved panel 1156. One of the second curved panel 1157 and the third curved panel 1158 is bent in a direction toward the cavity 1150, and the other of the second curved panel 1157 and the third curved panel 1158 is bent in a direction away from the cavity 1150. This allows the first connecting plate 1155 to have more curved structures, which is beneficial for further improving the yield strength of the first connecting plate 1155.

[0113] Specifically, the first curved panel 1156 is bent in the direction toward the cavity 1150, the second curved panel 1157 is bent in the direction away from the cavity 1150, and the third curved panel 1158 is bent in the direction toward the cavity 1150. That is, the first curved panel 1156 and the third curved panel 1158 are bent in the same direction, and both are bent in the opposite direction to the second curved panel 1157.

[0114] In some embodiments, the length L1 of the first curved panel 1156 extending in the direction away from the frame 11 is greater than or equal to 0.5 cm and less than or equal to 0.85 cm, so that the first curved panel 1156 has a high yield strength while being easy to bend.

[0115] The length of the first curved panel 1156 extending away from the frame 11 can be 0.53 cm, 0.57 cm, 0.6 cm, 0.65 cm, 0.7 cm, 0.74 cm, etc., and there is no limitation here.

[0116] In some embodiments, the length L2 of the second curved panel 1157 extending in the direction away from the frame 11 may be greater than or equal to 0.6 cm and less than or equal to 1 cm, so that the second curved panel 1157 has a high yield strength while being easy to bend.

[0117] The length of the second curved panel 1157 extending away from the frame 11 can be 0.63 cm, 0.67 cm, 0.7 cm, 0.75 cm, 0.8 cm, 0.74 cm, 0.9 cm, etc., and there is no limitation here.

[0118] In some embodiments, the length L3 of the third curved panel 1158 extending in the direction away from the frame 11 may be greater than or equal to 0.5 cm and less than or equal to 0.8 cm, so that the third curved panel 1158 has high yield strength while being easy to bend.

[0119] The length of the third curved panel 1158 extending away from the frame 11 can be 0.53 cm, 0.57 cm, 0.6 cm, 0.65 cm, 0.7 cm, 0.74 cm, etc., and there is no limitation here.

[0120] In some embodiments, the sum of the lengths of the first curved panel 1156, the second curved panel 1157, and the third curved panel 1158 extending in the direction away from the frame 11 can be greater than or equal to 2 cm and less than or equal to 3 cm, that is, 2 cm ≤ L1 + L2 + L3 ≤ 3 cm, so that the first curved panel 1156, the second curved panel 1157, and the third curved panel 1158 are easy to bend, while the yield strength of the first curved panel 1156, the second curved panel 1157, and the third curved panel 1158 to the first connecting plate 1155 is effectively improved.

[0121] The sum of the lengths of the first curved panel 1156, the second curved panel 1157, and the third curved panel 1158 extending away from the frame 11 can be 2.3 cm, 2.5 cm, 2.6 cm, 2.65 cm, 2.7 cm, 2.74 cm / 2.8 cm, etc., and there is no limitation here.

[0122] In some embodiments, the length L2 of the second curved panel 1157 extending in the direction away from the frame 11 can be greater than the length of the first curved panel 1156 and the third curved panel 1158 extending in the direction away from the frame 11, that is, L2≥L1+L3, so that the bending of the first curved panel 1156, the second curved panel 1157 and the third curved panel 1158 is more convenient.

[0123] In some embodiments, the cross-sectional area of ​​the cavity 1150 perpendicular to the second direction Y can be greater than or equal to 2 square centimeters and less than or equal to 5 square centimeters. This allows the cavity 1150 to effectively reduce stress concentration at the connection between the connecting structure 1154 and the frame 11, while preventing the cavity 1150 from being too large and affecting the connection strength between the connecting structure 1154 and the frame 11.

[0124] The cross-sectional area of ​​the cavity 1150 perpendicular to the second direction Y can be 2.3 square centimeters, 2.7 square centimeters, 3 square centimeters, 3.5 square centimeters, 4 square centimeters, 4.2 square centimeters, 4.7 square centimeters, etc., and there is no limitation here.

[0125] like Figure 3 As shown, the battery box 10 includes a frame 11, which encloses a receiving cavity 110. The frame 11 also includes a crossbeam 117 extending along a first direction X. The crossbeam 117 is located inside the receiving cavity 110 and divides the receiving cavity 110 into an electrical compartment 1102 and a battery compartment 1101 distributed along a second direction Y. The electrical compartment 1102 is used to accommodate electrical components, and the battery compartment 1101 is used to accommodate a battery 171. The first direction X and the second direction Y are arranged at an angle.

[0126] In some embodiments, the bottom surface of the crossbeam 117 is provided with an abutment plate 1176, and the abutment plate 1176 is recessed in the direction away from the bottom of the battery box 10 to form a groove 1171, and the bottom wall of the groove 1171 overlaps with a portion of the inner wall surface of the crossbeam 117 and is welded and fixed.

[0127] The battery box 10 provided in this embodiment of the application has an abutment plate 1176 on the bottom surface of the crossbeam 117, and the abutment plate 1176 is recessed on the side facing the bottom of the battery box 10 to form a groove 1171. The bottom wall of the groove 1171 overlaps with part of the inner wall surface of the crossbeam 117 and is welded and fixed, so that the abutment plate 1176 abuts with the bottom plate assembly 12. This can improve the yield strength of the crossbeam 117. At the same time, when foam or glue is injected into the battery compartment 1101, when foam or glue overflows to the side of the crossbeam 117 facing the bottom of the battery box 10, the overflowed foam or glue can be retained in the groove 1171. This helps to reduce the risk that the removed foam or glue will flow into the electrical compartment 1102 and affect the electrical components in the electrical compartment 1102.

[0128] In some embodiments, the battery box 10 further includes a base plate assembly 12 that abuts against an abutment plate 1176.

[0129] In some embodiments, the abutment plate 1176 includes a first abutment plate 1177 and a second abutment plate 1178. The first abutment plate 1177, the second abutment plate 1178, and the groove 1171 all extend along a first direction X, and the first abutment plate 1177 and the second abutment plate 1178 are spaced apart on both sides of the groove 1171 along a second direction Y. This improves the abutment stability between the abutment plate 1176 and the base plate assembly 12, and makes the shape of the groove 1171 more stable.

[0130] like Figure 12 As shown, the crossbeam 117 may include a crossbeam body 1173 and a first extension 1174 protruding from the crossbeam body 1173 toward the electrical compartment 1102. The first extension 1174 can improve the overall yield strength of the crossbeam 117. In some embodiments, a groove 1171 is provided on the side of the first extension 1174 toward the bottom of the battery compartment 10. When foam or glue overflows from the battery compartment 1101 and flows below the first extension 1174, it can be retained in the groove 1171 below the first extension 1174, thereby reducing the risk of overflowing foam or glue flowing into the electrical compartment 1102.

[0131] In some embodiments, the bottom wall of the groove 1171 overlaps with and is welded to a portion of the inner wall of the top wall of the first protrusion 1174, thereby increasing the yield strength of the first protrusion 1174.

[0132] In some embodiments, a portion of the sidewall of the groove 1171 overlaps with and is welded to the sidewall of the beam body 1173, thereby increasing the yield strength of the beam body 1173.

[0133] In some embodiments, the groove 1171 located in the first protrusion 1174 is positioned close to the crossbeam body 1173 so that the foam or adhesive remaining in the groove 1171 of the first protrusion 1174 is as far away from the electrical compartment 1102 as possible, thereby reducing the risk of overflowing foam or adhesive flowing into the electrical compartment 1102.

[0134] Continue to refer to Figure 12 The crossbeam 117 includes a crossbeam body 1173 and a second extension 1175 protruding from the crossbeam body 1173 toward the battery compartment 1101. The second extension 1175 can improve the overall yield strength of the crossbeam 117. In other embodiments, a groove 1171 may also be provided on the side of the second extension 1175 toward the bottom of the battery box 10. When foam or adhesive overflows from the battery compartment 1101 and flows below the second extension 1175, it can be retained in the groove 1171 below the second extension 1175 to reduce the risk of overflowing foam or adhesive flowing into the electrical compartment 1102.

[0135] In other embodiments, the groove 1171 located in the second protrusion 1175 can be positioned away from the crossbeam body 1173, so that the foam or glue remaining in the groove 1171 of the second protrusion 1175 is as far away from the electrical compartment 1102 as possible, thereby reducing the risk of overflowing foam or glue flowing into the electrical compartment 1102.

[0136] In some embodiments, the bottom wall of the groove 1171 may overlap and be welded to the inner wall of the top wall of the second protrusion 1175, thereby improving the yield strength of the second protrusion 1175.

[0137] In some embodiments, a portion of the sidewall of the groove 1171 may overlap with and be welded to the sidewall of the beam body 1173, thereby increasing the yield strength of the beam body 1173.

[0138] In some embodiments, the height of the first protrusion 1174 relative to the bottom of the battery box 10 is less than the height of the crossbeam body 1173 relative to the bottom of the battery box 10, thereby avoiding the first protrusion 1174 occupying too much space in the receiving cavity 110.

[0139] Specifically, the ratio of the height difference between the crossbeam body 1173 and the first protrusion 1174 to the height of the first protrusion 1174 relative to the bottom of the battery box 10 can be greater than or equal to 0.3 and less than or equal to 0.45, thereby effectively improving the yield strength of the crossbeam 117 while avoiding the first protrusion 1174 occupying too much space in the receiving cavity 110.

[0140] The ratio of the height difference between the crossbeam body 1173 and the first protrusion 1174 to the height of the first protrusion 1174 relative to the bottom of the battery box 10 can be 0.32, 0.35, 0.37, 0.39, 0.4, 0.43, etc., and is not limited here.

[0141] In some embodiments, the height difference between the crossbeam body 1173 and the first protrusion 1174 may be greater than or equal to 3 cm and less than or equal to 5 cm, so that the first protrusion 1174 has sufficient height relative to the bottom of the battery box 10, thereby improving the overall yield strength of the crossbeam 117 while minimizing the space occupied by the first protrusion 1174 in the receiving cavity 110.

[0142] The height difference between the crossbeam body 1173 and the first protrusion 1174 can be 3.2 cm, 3.4 cm, 3.5 cm, 3.8 cm, 4 cm, 4.3 cm, 4.7 cm, etc., and there is no limitation here.

[0143] In some embodiments, the height of the second protrusion 1175 relative to the bottom of the battery box 10 may be less than the height of the crossbeam body 1173 relative to the bottom of the battery box 10, thereby avoiding the second protrusion 1175 occupying too much space in the receiving cavity 110.

[0144] In some embodiments, the height difference between the crossbeam body 1173 and the second protrusion 1175 may be greater than or equal to 3 cm and less than or equal to 5 cm, so that the second protrusion 1175 has sufficient height relative to the bottom of the battery box 10, thereby improving the overall yield strength of the crossbeam 117 while minimizing the space occupied by the first protrusion 1174 in the receiving cavity 110.

[0145] The height difference between the main body 1173 and the second extension 1175 can be 3.2 cm, 3.4 cm, 3.5 cm, 3.8 cm, 4 cm, 4.3 cm, 4.7 cm, etc., and there is no limitation here.

[0146] In some embodiments, the height difference between the crossbeam body 1173 and the second protrusion 1175 is h6, and the height of the second protrusion 1175 relative to the bottom of the battery box 10 is h7. The height difference h6 between the crossbeam body 1173 and the second protrusion 1175 and the height h7 of the second protrusion 1175 relative to the bottom of the battery box 10 can satisfy: 0.3≤h7 / h6≤0.45. This allows the second protrusion 1175 to effectively improve the yield strength of the crossbeam 117 while avoiding the second protrusion 1175 occupying too much space in the receiving cavity 110.

[0147] The ratio of the height difference h6 between the crossbeam body 1173 and the second extension 1175 to the height h7 between the second extension 1175 and the bottom of the battery box 10 can be 0.32, 0.35, 0.37, 0.39, 0.4, 0.43, etc., and is not limited here.

[0148] In some embodiments, the height H4 of the beam body 1173 in the third direction Z can be greater than or equal to 5.5 cm and less than or equal to 7 cm, thereby giving the beam body 1173 a higher yield strength in the third direction Z, with the first direction X, the second direction Y and the third direction Z forming an angle with each other.

[0149] The height H4 of the crossbeam body 1173 in the third direction Z can be 5.8 cm, 5.9 cm, 6 cm, 6.2 cm, 6.5 cm, 6.7 cm, 6.8 cm, etc., and there is no restriction here.

[0150] In some embodiments, the height h7 of the first protrusion 1174 in the third direction Z can be greater than or equal to 3 cm and less than or equal to 5 cm, thereby giving the first protrusion 1174 a higher yield strength in the third direction Z, wherein the first direction X, the second direction Y and the third direction Z form an angle with each other.

[0151] The height h7 of the first protrusion 1174 in the third direction Z can be 3.2 cm, 3.5 cm, 3.8 cm, 4 cm, 4.2 cm, 4.6 cm, 4.9 cm, etc., and there is no restriction here.

[0152] In some embodiments, the height h8 of the second protrusion 1175 in the third direction Z can be greater than or equal to 3 cm and less than or equal to 5 cm, thereby giving the second protrusion 1175 a higher yield strength in the third direction Z, wherein the first direction X, the second direction Y and the third direction Z form an angle with each other.

[0153] The height h8 of the second protrusion 1175 in the third direction Z can be 3.2 cm, 3.5 cm, 3.8 cm, 4 cm, 4.2 cm, 4.6 cm, 4.9 cm, etc., and there is no restriction here.

[0154] In some embodiments, the width W3 of the crossbeam 117 in the second direction Y can be greater than or equal to 8 cm and less than or equal to 10 cm, thereby giving the crossbeam 117 as a whole a high yield strength in the second direction Y.

[0155] The width W3 of the crossbeam 117 in the second direction Y can be 8.2 cm, 8.5 cm, 8.8 cm, 9 cm, 9.2 cm, 9.6 cm, 9.9 cm, etc., and there is no restriction here.

[0156] In some embodiments, the width W4 of the beam body 1173 in the second direction Y can be greater than or equal to 2 cm and less than or equal to 3.5 cm, thereby giving the beam body 1173 a higher yield strength in the second direction Y.

[0157] The width W4 of the crossbeam body 1173 in the second direction Y can be 2.2 cm, 2.5 cm, 2.8 cm, 3 cm, 3.2 cm, etc., and there is no restriction here.

[0158] In some embodiments, the ratio of the width W4 of the crossbeam body 1173 in the second direction Y to the width W4 of the crossbeam 117 in the second direction Y can be greater than or equal to 1 / 4 and less than or equal to 1 / 3, thereby ensuring the yield strength of the crossbeam 117 in the second direction Y through the crossbeam body 1173 while minimizing the space occupied by the crossbeam body 1173.

[0159] The ratio of the width W4 of the crossbeam body 1173 in the second direction Y to the width W3 of the crossbeam 117 in the second direction Y can be 0.26, 0.28, 0.29, 0.3, 0.31, 0.33, etc., and is not limited here.

[0160] In some embodiments, the length of the crossbeam 117 in the first direction X can be greater than or equal to 0.79 meters and less than or equal to 1.49 meters to give the crossbeam 117 a higher yield strength. The length of the crossbeam 117 in the first direction X can be 0.8 meters, 0.82 meters, 0.86 meters, 0.9 meters, 0.96 meters, 0.98 meters, 1 meter, 1.2 meters, etc., and is not limited here.

[0161] In some embodiments, the frame 11 further includes two side beams 111, which are distributed along a first direction X on both sides of the receiving cavity 110 and extend along a second direction Y. The two side beams 111 are connected to the two ends of the crossbeam 117 respectively. The yield strength of the crossbeam 117 can be greater than the yield strength of at least one side beam 111, so that the side beam 111 has a better buffering effect while the crossbeam 117 stably supports the side beam 111, thereby improving the yield strength and buffering performance of the frame 11.

[0162] The side beam 111 has a first cavity 1112 formed inside, and the cross beam 117 has a third cavity 1172 formed inside. This allows the wall thickness of the cross beam 117 to be greater than the wall thickness of the side beam 111, so that the yield strength of the cross beam 117 is greater than the yield strength of at least one side beam 111.

[0163] In some embodiments, a third cavity 1172 may be formed within the crossbeam 117, and the wall thickness of the crossbeam 117 may be greater than or equal to 1.1 mm and less than or equal to 1.8 mm, so that the crossbeam 117 has a higher yield strength, especially a higher yield strength than the side beam 111. The wall thickness of the crossbeam 117 may be 1.2 mm, 1.3 mm, 1.4 mm, 1.7 mm, etc., and is not limited here.

[0164] In some embodiments, the frame 11 further includes at least one longitudinal beam 112 located within the battery compartment 1101, the longitudinal beam 112 extending along the second direction Y, and one end of the longitudinal beam 112 being connected to a crossbeam 117. The yield strength of the crossbeam 117 can be greater than the yield strength of the longitudinal beam 112, so that the crossbeam 117 has better support in the first direction X and better resistance to compression in the second direction Y.

[0165] The longitudinal beam 112 has a second cavity 1128, and the transverse beam 117 has a third cavity 1172. The wall thickness of the transverse beam 117 is greater than that of the longitudinal beam 112, so that the yield strength of the transverse beam 117 is greater than that of the longitudinal beam 112.

[0166] In this embodiment, the crossbeam 117 can be formed by welding multiple bent steel plates, thereby giving the crossbeam 117 high yield strength and low cost. The multiple bent steel plates are welded together to form a third cavity 1172. The third cavity 1172 is distributed within the crossbeam body 1173, the first protrusion 1174, and the second protrusion 1175. The portions of the third cavity 1172 located within the crossbeam body 1173 and the second protrusion 1175 are interconnected.

[0167] In some embodiments, an adhesive layer may be provided between the battery assembly 17 and the base plate assembly 12 to seal the gap between the battery assembly 17 and the base plate assembly 12.

[0168] like Figure 3 and Figure 13 As shown, the control assembly 14 includes a bracket 141, a first controller 142, and a second controller 143. The bracket 141 includes a mounting plate 1411, and the first controller 142 and the second controller 143 are mounted on both sides of the mounting plate 1411. Figure 13 , Figure 14 and Figure 15 As shown, the mounting plate 1411 includes a first plate surface 1422 and a second plate surface 1424 facing each other. The first plate surface 1422 and the second plate surface 1424 are distributed on both sides of the mounting plate 1411 along the thickness direction of the mounting plate 1411. When the bracket 141 is mounted on the frame 11, the thickness direction of the mounting plate 1411 extends along the third direction Z.

[0169] The first controller 142 is mounted on the first surface 1422 of the mounting plate 1411, and the second controller 143 is mounted on the second surface 1424 of the mounting plate 1411, so that the first controller 142 and the second controller 143 are mounted on opposite sides of the mounting plate 1411. The first controller 142 and the second controller 143 can be offset in the thickness direction of the mounting plate 1411.

[0170] The control component 14 provided in this application embodiment, by mounting the first controller 142 on the first surface 1422 of the mounting plate 1411 and the second controller 143 on the second surface 1424 of the mounting plate 1411, enables a more compact structure of the first controller 142, the second controller 143, and the bracket 141, which helps to reduce the installation space occupied by the control component 14 within the receiving cavity 110. Simultaneously, by offsetting the first controller 142 and the second controller 143 along the thickness direction of the mounting plate 1411, sufficient space is provided on both sides of the mounting plate 1411 along the thickness direction to fix the first controller 142 and the second controller 143, making the connection between the first controller 142 and the second controller 143 and the mounting plate 1411 more convenient.

[0171] In some embodiments, the orthographic projections of the first controller 142 and the second controller 143 on the first plate surface 1422 only partially overlap, thereby causing the first controller 142 and the second controller 143 to be misaligned in the thickness direction of the mounting plate 1411. Specifically, the area on the first plate surface 1422 of the mounting plate 1411 that overlaps with the orthographic projection of the second controller 143 but does not overlap with the orthographic projection of the first controller 142 can be used to fix the second controller 143. Conversely, the area on the first plate surface 1422 of the mounting plate 1411 that overlaps with the orthographic projection of the first controller 142 but does not overlap with the orthographic projection of the second controller 143 can be used to fix the first controller 142.

[0172] In some embodiments, a first through hole 1412 may be formed on the first plate surface 1422. The control assembly 14 includes a first locking member 151, which passes through the first through hole 1412 and is connected to the second controller 143. Furthermore, the first locking member 151 includes a first abutting portion 1511, which abuts against the mounting plate 1411 to restrict movement of the first locking member 151 along the direction from the first plate surface 1422 to the second plate surface 1424. Thus, when the first locking member 151 is connected to the second controller 143, by abutting the first abutting portion 1511 of the first locking member 151 against the mounting plate 1411, movement of the second controller 143 away from the mounting plate 1411 can be restricted, thereby maintaining a stable relative position between the mounting plate 1411 and the second controller 143.

[0173] Specifically, the first plate surface 1422 can be recessed to form a first recessed groove 1423, and the bottom surface of the first recessed groove 1423 has a first through hole 1412. At least a portion of the first abutment portion 1511 of the first locking member 151 is located within the first recessed groove 1423. This reduces the height of the first abutment portion 1511 protruding from the first plate surface 1422, thereby reducing the risk of interference between the first abutment portion 1511 of the first locking member 151 and the first controller 142 mounted on the first plate surface 1422.

[0174] In some embodiments, the depth of the first recess 1423 may be greater than or equal to the height of the first abutment portion 1511. This allows the first abutment portion 1511 of the first locking member 151 to be fully contained within the first recess 1423, further reducing the risk of interference between the first abutment portion 1511 of the first locking member 151 and the first controller 142.

[0175] like Figure 15As shown, a second through hole 1413 can be formed on the second plate surface 1424. The control assembly 14 includes a second locking member 152, which passes through the second through hole 1413 and is connected to the first controller 142. The second locking member 152 includes a second abutting portion 1521 protruding from the second plate surface 1424, which abuts against the mounting plate 1411 to restrict movement of the second locking member 152 along the direction from the second plate surface 1424 to the first plate surface 1422. Therefore, when the second locking member 152 is connected to the first controller 142, by abutting the second abutting portion 1521 of the second locking member 152 against the mounting plate 1411, movement of the first controller 142 away from the mounting plate 1411 can be restricted, thus maintaining a stable relative position between the mounting plate 1411 and the first controller 142.

[0176] In some embodiments, a first protrusion 1425 may be formed on the second plate surface 1424 at the position corresponding to the first recess 1423. The height of the first protrusion 1425 relative to the second plate surface 1424 is equal to the height of the second abutment portion 1521 relative to the second plate surface 1424. Thus, the first protrusion 1425 and the second abutment portion 1521 can support and position the second controller 143 mounted on the second plate surface 1424, ensuring stable mounting of the second controller 143 on the second plate surface 1424.

[0177] Furthermore, the projection of the second abutment portion 1521 of at least one second locking member 152 onto the second plate surface 1424 can be made so that it does not overlap with the projection of the second controller 143 onto the second plate surface 1424. Thus, the second abutment portion 1521 of the second locking member 152 will not interfere with the second controller 143, allowing the second controller 143 to be stably mounted on the second plate surface 1424.

[0178] In some embodiments, such as Figure 16 As shown, at least one second protrusion 1426 can be provided on the second surface 1424 of the mounting plate 1411. The second protrusion 1426 abuts against the side of the second controller 143 facing the mounting plate 1411. Thus, the second controller 143 can be supported and positioned by the second protrusion 1426, which helps to reduce the risk that the second controller 143 cannot be stably installed on the second surface 1424 due to insufficient flatness of the second surface 1424.

[0179] The second protrusion 1426 can be a strip-shaped protrusion to increase the contact area between the second protrusion 1426 and the second controller 143, which is beneficial to improving the installation stability of the second controller 143.

[0180] In some embodiments, a third through hole 1414 may be formed in the mounting plate 1411. The third through hole 1414 penetrates the mounting plate 1411 along the thickness direction of the mounting plate 1411, thereby reducing the material of the mounting plate 1411 and helping to reduce the cost and weight of the mounting plate 1411.

[0181] The second protrusion 1426 includes an abutment surface 1427 for abutting against the second controller 143. A third through hole 1414 is formed on the abutment surface 1427, and the edge of the third through hole 1414 is spaced from the edge of the abutment surface 1427, so that the abutment surface 1427 has sufficient area to abut against the second controller 143, thereby improving the installation stability of the second controller 143. In some embodiments, the height of the first protrusion 1425 relative to the second plate surface 1424 can be equal to the height of the second protrusion 1426 relative to the second plate surface 1424, so that the second controller 143 mounted on the second plate surface 1424 can be supported and positioned by the first protrusion 1425 and the second protrusion 1426, so that the second controller 143 is stably mounted on the second plate surface 1424.

[0182] Specifically, a portion of the mounting plate 1411 protrudes from the first mounting surface to the second mounting surface to form a first recess 1423 on the first mounting surface, and a first protrusion 1425 is formed on the second plate surface. There are multiple first locking members 151. The number of first recesses 1423 is equal to the number of first locking members 151, and they are arranged in a one-to-one correspondence. There are multiple second protrusions 1426. The multiple second protrusions 1426 are arranged side-by-side. The third through hole 1414 is a strip-shaped hole extending along the length direction of the second protrusions 1426.

[0183] like Figure 14 and Figure 15 As shown, the mounting plate 1411 includes a first edge and a second edge. A first flange 1419 may be provided on the first edge of the mounting plate 1411, protruding from the first plate surface 1422. Thus, the first flange 1419 can abut against the first controller 142 to position the first controller 142 on the first plate surface 1422, thereby improving the installation accuracy of the first controller 142.

[0184] Additionally, a second flange 1420 can be provided on the second edge of the mounting plate 1411, which protrudes from the second plate surface 1424. Thus, the second flange 1420 can abut against the second controller 143 to position the second controller 143 on the second plate surface 1424, thereby improving the installation accuracy of the second controller 143.

[0185] like Figure 15As shown, the edge of the mounting plate 1411 includes at least one flanged segment 1415 extending circumferentially therefrom, and an edge segment 1416 adjacent to the flanged segment 1415. The flanged segment 1415 is connected to a flange 1418, which protrudes from a first plate surface 1422 or a second plate surface 1424. In some embodiments, a second opening 1417 may be provided between the at least one flanged segment 1415 and the adjacent edge segment 1416. This reduces stress concentration at the connection between the flange 1418 and the adjacent edge, which is beneficial for improving the yield strength of the flange 1418 and the mounting plate 1411.

[0186] The flange 1418 may include the first flange 1419 and the second flange 1420 described above. Furthermore, the flange 1418 may also include a fixed flange 1421 that bends from the edge of the mounting plate 1411 along the direction of the first plate surface 1422 toward the second plate surface 1424. This fixed flange 1421 is used for fixed connection with the frame 11. There may be multiple fixed flanges 1421. Multiple fixed flanges 1421 are spaced apart along the edge of the mounting plate 1411. Multiple fixed flanges 1421 are distributed around the perimeter of the mounting plate 1411.

[0187] In some embodiments, such as Figure 2 As shown, the battery box 10 includes a frame 11 and a bottom protective plate 121. The frame 11 encloses and forms a receiving cavity 110. The bottom protective plate 121 is disposed on one side of the frame 11, with one side surface of the bottom protective plate 121 facing the receiving cavity 110. In some embodiments, a reinforcing structure 1211 and a plurality of buffer protrusions 1213 may be provided on the side surface of the bottom protective plate 121 opposite to the receiving cavity 110. The plurality of buffer protrusions 1213 are distributed at least on opposite sides of the bottom protective plate 121. The height of the buffer protrusions 1213 relative to the side surface of the bottom protective plate 121 opposite to the receiving cavity 110 is greater than or equal to the height of the reinforcing structure 1211 relative to the side surface of the bottom protective plate 121 opposite to the receiving cavity 110.

[0188] The battery box 10 provided in this embodiment of the application has a reinforcing structure 1211 protruding from the side surface of the bottom protective plate 121 opposite to the receiving cavity 110. This reinforcing structure 1211 can improve the yield strength of the bottom protective plate 121, thereby enhancing its protective effect. Furthermore, multiple buffer protrusions 1213 are protruding from the side surface of the bottom protective plate 121 opposite to the receiving cavity 110, with the buffer protrusions 1213 distributed at least on opposite sides of the bottom protective plate 121. The height of the buffer protrusions 1213 relative to the side surface of the bottom protective plate 121 opposite to the receiving cavity 110 is greater than or equal to the height of the reinforcing structure 1211 relative to the side surface of the bottom protective plate 121 opposite to the receiving cavity 110. When the bottom protective plate 121 is impacted or compressed by an external structure, there is a higher probability that the external structure will impact or compress the buffer protrusions 1213 first, thereby reducing the risk of the reinforcing protrusions or other structures of the bottom protective plate 121 being compressed or impacted.

[0189] In some embodiments, a plurality of buffer protrusions 1213 located on the same edge of the bottom guard plate 121 are spaced apart along the length direction of the corresponding edge, thereby further improving the buffering effect of the buffer protrusions 1213.

[0190] In some embodiments, a buffer space 1214 may be recessed on the side surface of the bottom guard plate 121 facing the receiving cavity 110 at the position corresponding to the buffer protrusion 1213. Thus, when the buffer protrusion 1213 is squeezed or impacted, the buffer protrusion 1213 can deform to a certain extent toward the buffer space 1214, which is beneficial to improving the buffering effect of the buffer protrusion 1213.

[0191] A third opening 1215 communicating with the buffer space 1214 can be formed at the edge of the bottom guard plate 121. This allows the buffer protrusion 1213 to be as close as possible to the edge of the bottom guard plate 121, which helps to reduce the space occupied by the buffer protrusion 1213 in the bottom guard plate 121.

[0192] In some embodiments, a portion of the bottom guard plate 121 protrudes in a direction away from the receiving cavity 110 to form a buffer protrusion 1213. This makes it easier to process the buffer protrusion 1213 and the buffer space 1214, and the provision of the buffer protrusion 1213 can improve the yield strength of the bottom guard plate 121 at the edge to a certain extent.

[0193] Similarly, a portion of the bottom protective plate 121 can be raised in a direction away from the receiving cavity 110 to form a reinforcing structure 1211, making the formation of the reinforcing structure 1211 easier and providing a better reinforcing effect on the bottom protective plate 121. The reinforcing structure 1211 can be a strip structure extending along the first direction X or along the second direction Y.

[0194] like Figure 17The bottom protective plate 121 also has a fixing protrusion 1216 protruding from the side opposite to the receiving cavity 110. This fixing protrusion 1216 is used for the locking structure 13 to pass through and connect with the frame 11, thereby keeping the bottom protective plate 121 relatively fixed to the frame 11 through the locking structure 13. In some embodiments, the height of the fixing protrusion 1216 relative to the surface of the bottom protective plate 121 opposite to the receiving cavity 110 can be less than the height of the buffer protrusion 1213 relative to the surface of the bottom protective plate 121 opposite to the receiving cavity 110. Therefore, when the bottom protective plate 121 is impacted or squeezed by an external structure, it is more likely that the external structure will impact or squeeze the buffer protrusion 1213 first, thereby reducing the risk of the mounting protrusion of the bottom protective plate 121 being squeezed or impacted, which is beneficial to improving the connection stability between the bottom protective plate 121 and the frame 11.

[0195] The locking structure 13 may include a third abutting portion 130 protruding from the fixed protrusion 1216 on the side away from the receiving cavity 110. The third abutting portion 130 abuts against the side of the fixed protrusion 1216 away from the receiving cavity 110, thereby enabling the third abutting portion 130 to apply a force toward the frame 11 to the fixed protrusion 1216, making the connection between the bottom guard plate 121 and the frame 11 more stable.

[0196] In some embodiments, the height of the third abutment portion 130 relative to the surface of the bottom guard plate 121 facing away from the receiving cavity 110 can be less than or equal to the height of the buffer protrusion 1213 relative to the surface of the bottom guard plate 121 facing away from the receiving cavity 110. This reduces the risk of the third abutment portion 130 being squeezed or impacted, thereby improving the connection stability between the bottom guard plate 121 and the frame 11.

[0197] Continue to refer to Figure 17 The bottom protective plate 121 has a recessed clearance cavity 1217 on the side facing the receiving cavity 110, corresponding to the position of the fixing protrusion 1216. The locking structure 13 includes a third locking member 131 and a connecting member 132. The connecting member 132 is connected to the frame 11, and the third locking member 131 passes through the fixing protrusion 1216 and is connected to the connecting member 132, thereby connecting the bottom protective plate 121 to the frame 11. At least a portion of the connecting member 132 can be located within the clearance cavity 1217. This makes the connection between the connecting member 132 and the frame 11 more convenient and avoids a portion of the connecting member 132 protruding from the frame 11 towards the surface of the bottom protective plate 121 and interfering with the fixing protrusion 1216.

[0198] In some embodiments, a portion of the bottom guard plate 121 protrudes in a direction away from the receiving cavity 110 to form a fixed protrusion 1216. This makes it easier to process the fixed protrusion 1216 and the clearance cavity 1217, and the fixed protrusion 1216 can improve the yield strength of the bottom guard plate 121 at the edge to a certain extent.

[0199] In some embodiments, the fixing protrusion 1216 can be located at the edge of the bottom guard plate 121 so that the locking structure 13 can connect the fixing protrusion 1216 to the side beam 111, front beam 113, or rear beam 114 of the frame 11. A fourth opening 1218 communicating with the clearance cavity 1217 can be formed at the edge of the bottom guard plate 121, thereby bringing the fixing protrusion 1216 as close as possible to the edge of the bottom guard plate 121, which helps to reduce the space occupied by the fixing protrusion 1216 in the bottom guard plate 121.

[0200] In some embodiments, the number of fixing protrusions 1216 can be multiple, and the multiple fixing protrusions 1216 are spaced apart along the edge of the bottom guard plate 121. Thus, the multiple fixing protrusions 1216 can be connected to the frame 11 through the locking structure 13, which helps to improve the connection strength between the bottom guard plate 121 and the frame 11.

[0201] In some embodiments, at least a portion of the fixing protrusion 1216 and the buffer protrusion 1213 may be located on the same side edge of the bottom guard plate 121. The fixing protrusion 1216 and the buffer protrusion 1213 are alternately arranged along the corresponding edge extension direction, so that the buffer protrusion 1213 can better protect the fixing protrusion 1216 and the locking structure 13.

[0202] In this embodiment, the first locking member 151, the second locking member 152, and the third locking member 131 can be bolts, screws, or other locking components, which are not limited here.

[0203] like Figure 18 and Figure 19 As shown, the base plate assembly 12 includes a temperature regulating plate 123, a bottom protective plate 121, and a sealing element 1232. The temperature regulating plate 123 has a flow channel (not shown) for the flow of temperature regulating medium. The bottom protective plate 121 and the temperature regulating plate 123 are stacked together. The sealing element 1232 is sandwiched between the temperature regulating plate 123 and the bottom protective plate 121 to form a seal between the temperature regulating plate 123 and the bottom protective plate 121, reducing the risk of impurities entering the gap between the temperature regulating plate 123 and the bottom protective plate 121.

[0204] In some embodiments, the seal 1232 may be disposed along the edge of the bottom guard plate 121, and the seal 1232 includes a meandering segment 1234 that extends meanderingly along the edge of the bottom guard plate 121.

[0205] The base plate assembly 12 provided in this application embodiment provides a sealing element 1232 between the temperature regulating plate 123 and the base guard plate 121, such that the sealing element 1232 is provided along the edge of the base guard plate 121. The sealing element 1232 includes a meandering segment 1234 that extends meanderingly along the edge of the base guard plate 121, which can increase the length of the sealing element 1232 and thus improve the sealing effect of the sealing element 1232.

[0206] In some embodiments, such as Figure 19 As shown, a protrusion 1212 is provided on the edge of the bottom guard plate 121 facing away from the temperature regulating plate 123, and a recess 1224 is formed on the side surface of the bottom guard plate 121 facing the temperature regulating plate 123 at the position corresponding to the protrusion 1212, so that at least part of the meandering segment 1234 extends along the contour of the recess 1224, thereby making the meandering segment 1234 meander along the edge of the bottom guard plate 121.

[0207] The number of protrusions 1212 is multiple, and the protrusions 1212 are spaced apart along the edge of the bottom guard plate 121. At least a portion of the meandering segment 1234 is located between two adjacent recesses 1224 and extends along the corresponding edge. As a result, the length of the meandering segment 1234 extending circumferentially along the protrusions 1212 can be longer, which is beneficial to increasing the total length of the meandering segment 1234.

[0208] In some embodiments, the meandering segment 1234 includes a curved segment 1235 extending along the contour of the recess 1224, and a connecting segment 1236 connecting two adjacent curved segments 1235. The connecting segment 1236 is located between two adjacent recesses 1224 and extends along the corresponding edge. Thus, the curved segment 1235 extends as long as possible along the contour of the recess 1224, and the meandering segment 1234 extends continuously along the length direction of the corresponding edge, which is beneficial to improving the sealing effect of the meandering segment 1234.

[0209] In some embodiments, the protrusion 1212 may include a fixing protrusion 1216 for the locking structure 13 to pass through in order to fix the temperature regulating plate 123 and the bottom guard plate 121. By extending the curved section 1235 circumferentially along the fixing protrusion 1216, the meandering section 1234 can be brought closer to the fixing protrusion 1216, thereby experiencing a greater clamping force between the bottom guard plate 121 and the temperature regulating plate 123, resulting in a higher compression ratio of the sealing section 1233, which is beneficial to improving the sealing effect of the meandering section 1234. The structure of the fixing protrusion 1216 can refer to the above embodiments, and will not be repeated here.

[0210] Of course, the protrusion 1212 can also be a buffer protrusion 1213 or other protrusion structures provided near the edge of the bottom guard plate 121, and there is no limitation here.

[0211] In some embodiments, such as Figure 20 and Figure 21 As shown, the bottom protective plate 121 has a plurality of connecting holes 1219 spaced apart along at least one edge. The connecting holes 1219 penetrate the bottom protective plate 121 along its thickness direction and are used for the locking structure 13 to pass through. After passing through the connecting holes 1219, the locking structure 13 can be connected to the temperature regulating plate 123 or the frame 11, thereby fixing the bottom protective plate 121 to the temperature regulating plate 123 or the frame 11.

[0212] In this configuration, at least a portion of the meandering section 1234 can extend circumferentially along the connecting hole 1219. This allows the meandering section 1234 to be positioned close to the connecting hole 1219, enabling the temperature regulating plate 123 and the bottom protective plate 121 to apply a greater clamping force to the meandering section 1234, resulting in a higher sealing effect.

[0213] In some embodiments, the connecting hole 1219 includes a plurality of first sub-connecting holes 1220 and a plurality of second sub-connecting holes 1221. The plurality of first sub-connecting holes 1220 are closer to their respective edges than the second sub-connecting holes 1221. The plurality of first sub-connecting holes 1220 and the plurality of second sub-connecting holes 1221 are spaced apart along the respective edge extension directions, and are staggered. The plurality of first sub-connecting holes 1220 and the plurality of second sub-connecting holes 1221 are respectively used for the locking structure 13 to pass through, thereby improving the installation stability of the bottom guard plate 121.

[0214] Specifically, the meandering segment 1234 can be located between a plurality of first sub-connecting holes 1220 and a plurality of second sub-connecting holes 1221, with at least a portion of the meandering segment 1234 extending circumferentially along the first sub-connecting holes 1220, and / or at least a portion of the meandering segment 1234 extending circumferentially along the second sub-connecting holes 1221. This allows the meandering segment 1234 to extend meanderingly between the plurality of first sub-connecting holes 1220 and the plurality of second sub-connecting holes 1221, resulting in a better sealing effect at the locations of the first and second sub-connecting holes 1220 and 1221 on the bottom protective plate 121.

[0215] In some embodiments, the seal 1232 includes a sealing segment 1233 near one side edge of the bottom guard plate 121. The sealing segment 1233 includes a meandering segment 1234. The ratio of the total length of the meandering segment 1234 to the length of the sealing segment 1233 is greater than or equal to 0.5 and less than or equal to 1, thereby giving the sealing segment 1233 a longer length to improve the sealing effect of the sealing segment 1233.

[0216] The ratio of the total length of the meandering section 1234 included in the sealing section 1233 to the length of the sealing section 1233 can be 0.6, 0.63, 0.68, 0.7, 0.75, 0.8, 0.9, etc., and no restriction is imposed here.

[0217] In some embodiments, the ratio of the total length of the sealing segment 1233 included in the seal 1232 to the total length of the seal 1232 can be greater than or equal to 0.5 and less than or equal to 1, thereby making the total length of the sealing segment 1233 longer, which is beneficial to improving the overall sealing effect of the seal 1232.

[0218] The ratio of the total length of the sealing segment 1233 included in the sealing element 1232 to the total length of the sealing element 1232 can be 0.6, 0.63, 0.68, 0.7, 0.75, 0.8, 0.9, etc., and is not limited here.

[0219] In some embodiments, the seal 1232 includes multiple meandering segments 1234 distributed around the bottom cover plate 121. This increases the overall length of the seal 1232, enabling it to provide a better sealing effect around the bottom cover plate 121.

[0220] In some embodiments, such as Figure 19 As shown, a mounting groove 1222 is recessed on the side of the bottom protective plate 121 facing the temperature regulating plate 123, and at least part of the seal 1232 is disposed in the mounting groove 1222. This allows for more stable installation of the seal 1232, thereby improving the sealing effect of the seal 1232.

[0221] In some embodiments, the depth of the mounting groove 1222 may be less than or equal to the thickness of the seal 1232, so that the seal 1232 provided in the mounting groove 1222 can be squeezed by the temperature regulating plate 123 and the bottom guard plate 121, so that the seal 1232 has a better sealing effect.

[0222] In some embodiments, the ratio of the depth of the mounting groove 1222 to the thickness of the seal 1232 can be greater than or equal to 0.5 and less than or equal to 1, so that the seal 1232 has a larger compression ratio after being squeezed by the temperature regulating plate 123 and the bottom guard plate 121, thereby improving the sealing effect of the seal 1232.

[0223] The ratio of the depth of the mounting groove 1222 to the thickness of the seal 1232 can be 0.55, 0.6, 0.63, 0.68, 0.7, 0.75, 0.8, 0.9, etc., and is not limited here.

[0224] In some embodiments, the thickness of the seal 1232 may be greater than or equal to 1 mm and less than or equal to 2 mm, thereby making the seal 1232 thicker and having a larger compression ratio when the seal 1232 is squeezed by the temperature regulating plate 123 and the bottom guard plate 121.

[0225] In some embodiments, the ratio of the depth of the mounting groove 1222 to the thickness of the seal 1232 may be greater than or equal to 0.7 and less than or equal to 0.95, so as to further improve the compression ratio of the seal 1232 provided in the mounting groove 1222 after being squeezed by the temperature regulating plate 123 and the bottom guard plate 121.

[0226] The ratio of the depth of the mounting groove 1222 to the thickness of the seal 1232 can be 0.75, 0.78, 0.8, 0.83, 0.85, 0.88, 0.9, 0.92, etc., and is not limited here.

[0227] In some embodiments, the bottom cover plate 121 and the temperature regulating plate 123 may be bonded to the seal 1232 respectively. Thus, when the seal 1232 includes the meandering section 1234, the bonding area between the seal 1232 and the bottom cover plate 121 and the temperature regulating plate 123 can be increased, thereby improving the connection strength between the bottom cover plate 121 and the temperature regulating plate 123.

[0228] In some embodiments, a buffer element may be provided between the bottom guard plate 121 and the temperature regulating plate 123 to reduce the deformation caused by the bottom guard plate 121 impacting the temperature regulating plate 123. The buffer element may be an elastic component such as foam, sponge, or rubber, and there is no limitation herein.

[0229] In addition, a polyvinyl chloride (PVC) coating can be applied to the surface of the bottom guard plate 121 facing away from the temperature regulating plate 123 to improve the corrosion resistance of the bottom guard plate 121.

[0230] In some embodiments, such as Figure 2 As shown, the battery box 10 includes a frame 11 and a base plate assembly 12. The frame 11 includes a battery compartment 1101 and an electrical compartment 1102. The battery compartment 1101 is used to accommodate batteries 171, and the electrical compartment 1102 is used to accommodate electrical components. The base plate assembly 12 includes a temperature regulating plate 123 and a bottom protective plate 121 stacked together. The temperature regulating plate 123 has a flow channel for the flow of temperature regulating medium. One side of the temperature regulating plate 123 faces the receiving cavity 110, and the bottom protective plate 121 is located on the side of the temperature regulating plate 123 away from the receiving cavity 110.

[0231] Among them, such as Figure 10 , Figure 11 and Figure 18As shown, the temperature regulating plate 123 may include a connection portion 1231 for connecting to an external pipeline, the connection portion 1231 extending out of the outer side of the frame 11 along the direction from the electrical compartment 1102 to the battery compartment 1101.

[0232] The battery box 10 provided in this embodiment reduces the risk of short circuits in the battery 171 or electrical components within the electrical compartment 1101 caused by leakage of the temperature regulating plate 123 into the receiving cavity 110 after the connection portion 1231 of the temperature regulating plate 123 for connection with external pipelines extends outward from the outer side of the frame 11 along the direction from the electrical compartment 1102 to the battery compartment 1101. Simultaneously, it avoids the connection portion 1231 occupying the receiving space, thus improving the utilization rate of the receiving space. Furthermore, it shortens the flow path from the external pipeline to the internal channel of the temperature regulating plate 123, improving the temperature regulating efficiency of the temperature regulating plate 123. Moreover, the connection portion 1231 is positioned away from the electrical compartment 1102, further reducing the risk of short circuits in the electrical components within the electrical compartment 1102 caused by leakage of the temperature regulating medium from the connection portion 1231 or external pipelines into the electrical compartment 1102.

[0233] In some embodiments, a fixing structure 118 may be provided on the outer side of the frame 11 along the direction from the electrical compartment 1102 to the battery compartment 1101. The fixing structure 118 is used to connect with external pipelines. Thus, the external pipelines can be fixed by the fixing structure 118, avoiding the external pipelines from exerting large forces on the connecting part 1231, which would cause the connecting part 1231 to deform and thus affect the connection stability between the external pipelines and the connecting part 1231.

[0234] The fixed structure 118 may include an adapter pipe 1181 connected to the connecting portion 1231, which is used to connect to an external pipeline. Thus, the external pipeline can be connected to the connecting portion 1231 via the adapter pipe 1181, thereby connecting the external pipeline to the flow channel within the temperature regulating plate 123, facilitating the flow of the temperature regulating medium between the external pipeline and the flow channel of the temperature regulating plate 123. Furthermore, when the external pipeline applies a force to the adapter pipe 1181, the adapter pipe 1181 can transfer at least a portion of the force to the frame 11, reducing the force on the connecting portion 1231 and thus decreasing the risk of deformation of the connecting portion 1231.

[0235] In some embodiments, the fixing structure 118 may further include a fixing part 1184 connected to the outer side of the frame 11, and the fixing part 1184 is connected to the adapter pipe 1181, thereby making the connection between the adapter pipe 1181 and the frame 11 more stable and convenient.

[0236] In some embodiments, the adapter pipe 1181 includes an input pipe 1182 and an output pipe 1183, which are respectively connected to the connector 1231. Thus, the external pipeline can input the temperature regulating medium into the flow channel of the temperature regulating plate 123 through the input pipe 1182, and the temperature regulating medium in the flow channel of the temperature regulating plate 123 can flow back to the external pipeline through the output pipe 1183, enabling the recycling of the temperature regulating medium.

[0237] Specifically, the external pipeline includes two connecting pipes, one of which is connected to the input pipe 1182 and the other is connected to the output pipe 1183.

[0238] In some embodiments, on a projection plane perpendicular to the direction from the base plate assembly 12 to the frame 11, the orthographic projection of the fixing structure 118 at least partially overlaps with the orthographic projection of the connecting portion 1231, making the fixing structure 118 closer to the connecting portion 1231, facilitating the connection of the fixing structure 118 and the connecting portion 1231. The direction from the base plate assembly 12 to the frame 11 is substantially parallel to the third direction Z.

[0239] In some embodiments, on a projection plane perpendicular to the direction from the base plate assembly 12 to the frame 11, the orthographic projection of the bottom guard plate 121 may at least partially overlap with the orthographic projection of the connecting portion 1231. Thus, the bottom guard plate 121 can protect the connecting portion 1231, reducing the risk of deformation of the connecting portion 1231 due to impact or compression from external structures.

[0240] The bottom cover 121 may include a protective portion 1223, which extends from the outer side of the frame 11 along the direction from the electrical compartment 1102 to the battery compartment 1101. On a projection plane perpendicular to the direction from the bottom plate assembly 12 to the frame 11, the orthographic projection of the protective portion 1223 covers the orthographic projection of the connecting portion 1231, thereby improving the protective effect of the bottom cover 121 on the connecting portion 1231.

[0241] In some embodiments, an adhesive layer (not shown in the figure) may be provided between the protective part 1223 and the connecting part 1231. The protective part 1223 is bonded to the connecting part 1231 through the adhesive layer, thereby improving the connection strength between the bottom guard plate 121 and the connecting part 1231.

[0242] This application also provides a battery box, which includes at least one of a frame, a control component, and a base plate assembly. The specific structures of the frame, control component, and base plate assembly are as described in the above embodiments. Since this battery box adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0243] In some embodiments, the battery box 10 includes a frame 11 and a bottom plate assembly 12. The frame 11 includes a battery compartment 1101 and an electrical compartment 1102. The battery compartment 1101 is used to accommodate a battery 171, and the electrical compartment 1102 is used to accommodate electrical components. The bottom plate assembly 12 includes a temperature regulating plate 123 and a bottom protective plate 121 stacked together. The temperature regulating plate 123 has a flow channel for the flow of a temperature regulating medium. One side of the temperature regulating plate 123 faces the receiving cavity 110, and the bottom protective plate 121 is located on the side of the temperature regulating plate 123 away from the receiving cavity 110.

[0244] The temperature regulating plate 123 includes a connection part 1231 for connecting to an external pipeline, the connection part 1231 extending out of the outer side of the frame 11 along the direction from the electrical compartment 1102 to the battery compartment 1101.

[0245] This application also provides a battery pack, which includes at least one of a frame, a control component, a base plate assembly, and a battery box. The specific structures of the frame, control component, base plate assembly, and battery box are as described in the above embodiments. Since this battery pack adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0246] In some embodiments, the battery pack 1 includes a battery box 10 and a battery assembly 17. The battery box 10 is as described above. The battery box 10 includes a frame 11 and a bottom plate assembly 12. The frame 11 includes a battery compartment 1101 and an electrical compartment 1102. The battery compartment 1101 is used to accommodate the battery 171, and the electrical compartment 1102 is used to accommodate electrical components. The bottom plate assembly 12 includes a temperature regulating plate 123 and a bottom protective plate 121 stacked together. The temperature regulating plate 123 has a flow channel for the flow of a temperature regulating medium. One side of the temperature regulating plate 123 faces the receiving cavity 110, and the bottom protective plate 121 is located on the side of the temperature regulating plate 123 away from the receiving cavity 110. The temperature regulating plate 123 includes a connecting part 1231 for connecting to an external pipeline. The connecting part 1231 extends out of the outer side of the frame 11 along the direction from the electrical compartment 1102 to the battery compartment 1101.

[0247] The battery assembly 17 includes a plurality of batteries 171 and is disposed within the battery compartment 1101 of the battery box 10.

[0248] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery box, characterized in that, include: A frame, the frame including a receiving cavity having a battery compartment and an electrical compartment, the battery compartment for accommodating batteries and the electrical compartment for accommodating electrical components; The base plate assembly includes a temperature regulating plate and a bottom protective plate stacked together. The temperature regulating plate has a flow channel for the flow of temperature regulating medium. One side of the temperature regulating plate faces the receiving cavity, and the bottom protective plate is located on the side of the temperature regulating plate away from the receiving cavity. The temperature regulating plate includes a connection part for connecting to an external pipeline, the connection part extending out of the outer side of the frame along the direction from the electrical compartment to the battery compartment.

2. The battery box as described in claim 1, characterized in that, The frame has a fixing structure on its outer side along the direction from the electrical compartment to the battery compartment, and the fixing structure is used to connect to the external pipeline.

3. The battery box as described in claim 2, characterized in that, The fixing structure includes an adapter pipe connected to the connecting part, the adapter pipe being used to connect to the external pipeline.

4. The battery box as described in claim 3, characterized in that, The fixing structure also includes a fixing part connected to the outer side of the frame, and the fixing part is connected to the adapter pipe.

5. The battery box as described in claim 3, characterized in that, The adapter includes an input pipe and an output pipe, which are respectively connected to the connecting part.

6. The battery box as described in any one of claims 2 to 5, characterized in that, On a projection plane perpendicular to the direction from the base plate assembly to the frame, the orthographic projection of the fixing structure at least partially overlaps with the orthographic projection of the connecting portion.

7. The battery box as described in any one of claims 1 to 6, characterized in that, On a projection plane perpendicular to the direction from the base plate assembly to the frame, the orthographic projection of the base plate at least partially overlaps with the orthographic projection of the connecting portion.

8. The battery box as described in claim 7, characterized in that, The bottom guard plate includes a protective portion that extends out of the outer side of the frame along the direction from the electrical compartment to the battery compartment; on a projection plane perpendicular to the direction from the bottom plate assembly to the frame, the orthographic projection of the protective portion covers the orthographic projection of the connecting portion.

9. The battery box as described in claim 8, characterized in that, An adhesive layer is also provided between the protective part and the connecting part, and the protective part is bonded to the connecting part through the adhesive layer.

10. A battery pack, characterized in that, include: A battery box, wherein the battery box is the battery box according to any one of claims 1 to 9; A battery assembly, comprising multiple batteries, is disposed within the battery compartment of the battery box.

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