Battery box and battery device

Abstract

The utility model relates to battery technology field, specifically disclose battery box and battery device, and battery box includes battery box and output structure, and battery box sets up end board, and the one side of end board along first direction is used for setting battery pack, and end board is provided with via along first direction, output structure includes casing, output connector and signal connector, and the casing includes main shell, and main shell is configured to set up in the other side of end board along first direction, and main shell covers via, output connector sets up in main shell, and output connector passes through via and is connected with the output conductive row electricity of battery pack, signal connector sets up in main shell, and signal connector is connected with the signal line of battery management system that passes through via, and signal connector is used for output battery voltage or temperature signal. The battery box integrates output connector and signal connector on main shell, and main shell is fixed on end board, is favorable to the reasonable distribution of installation space on end board, need not output connector and signal connector separate installation, has improved the assembly efficiency of battery device.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to battery boxes and battery devices. Background Technology

[0002] With the rapid development of new energy technologies, the power battery pack, as a core component of electric vehicles and energy storage systems, directly affects energy transmission efficiency, safety, and ease of maintenance through its structural design. Existing battery packs typically employ a modular design, requiring multiple types of connector assemblies to be independently installed on their endplates, including output connectors (positive and negative terminals) and signal connectors (signal output and signal input connectors). In this design, the output connectors need to be directly connected to the main positive and negative terminals inside the battery pack, responsible for transmitting high-power electrical energy; while the signal connectors need to interface with the data acquisition circuitry and control unit of the battery management system (BMS) to achieve battery status monitoring (such as voltage and temperature) and communication functions.

[0003] In the existing technology, the current output head and signal connector are independently set on the end plate of the battery box, which occupies most of the space of the end plate, resulting in tight end plate installation space, which is not conducive to the rational arrangement of end plate installation space, and also not conducive to improving installation efficiency.

[0004] Therefore, a battery box is urgently needed to solve the above problems. Utility Model Content

[0005] One objective of this utility model is to provide a battery box that solves the problem that the current output head and signal connector are independently set on the end plate of the battery box, thus occupying most of the space on the end plate, resulting in tight installation space on the end plate and hindering the rational arrangement of the installation space.

[0006] To achieve this objective, the following technical solution is adopted:

[0007] A battery housing, wherein the battery housing is provided with an end plate, and the end plate is used to house a battery pack on one side along a first direction, and the end plate is provided with a through hole along the first direction;

[0008] The output structure includes:

[0009] The housing includes a main housing configured to be disposed on the other side of the end plate along the first direction, and the main housing covers the through hole;

[0010] An output connector is disposed on the main housing, the output connector passes through the through hole and is electrically connected to the output conductive bus of the battery pack;

[0011] A signal connector is disposed on the main housing. The signal connector is connected to the signal line of the battery management system passing through the via. The signal connector is used to output battery voltage or temperature signals.

[0012] Another objective of this utility model is to provide a battery device to solve the problem of low assembly efficiency of battery boxes.

[0013] To achieve this objective, the following technical solution is adopted:

[0014] The battery device includes a battery pack and a battery box as described in any of the above embodiments. The battery pack and the main housing are respectively disposed on both sides of the end plate, and the output conductive busbar of the battery pack is connected to the output connector.

[0015] The above technical solution has the following beneficial effects:

[0016] This utility model provides a battery box and a battery device. The battery box includes a battery body and an output structure. The battery body is provided with an end plate, one side of which is used to house the battery pack. The end plate has a through hole along the first direction. The output structure includes a housing, an output connector, and a signal connector. The housing includes a main housing, which is configured to be located on the other side of the end plate along the first direction and covers the through hole. The output connector is located on the main housing, passes through the through hole, and is electrically connected to the output conductive pin of the battery pack. The signal connector is located on the main housing and is connected to the signal line of the battery management system passing through the through hole. The signal connector is used to output battery voltage or temperature signals. This battery box integrates the output connector and the signal connector on the main housing and fixes the main housing to the end plate, thereby effectively saving installation space on the end plate and facilitating the rational allocation of installation space on the end plate. At the same time, since the housing is fixed to the end plate, there is no need for the output connector and signal connector to be installed separately on the end plate, thereby improving the assembly efficiency of the battery device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the battery box structure in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the battery device in an embodiment of the present utility model (excluding part of the battery box).

[0019] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 This is an exploded view of the battery device in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the output structure in an embodiment of the present utility model;

[0022] Figure 6 for Figure 5 Section at point AA Figure 1 ;

[0023] Figure 7 for Figure 5 Section at point AA Figure 2 ;

[0024] Figure 8 for Figure 7 A magnified view of a section at point B in the middle;

[0025] Figure 9 for Figure 7 A magnified view of a section at point C.

[0026] In the picture:

[0027] X, first direction; Y, second direction;

[0028] 100. Battery housing; 101. End plate; 102. Via; 1021. Positive via; 1022. Negative via; 1023. Signal via; 200. Battery pack; 201. Negative busbar; 202. Positive busbar; 300. Battery management system;

[0029] 1. Shell; 11. Main shell; 111. Negative terminal socket; 112. Negative terminal connection hole; 113. Positive terminal socket; 114. Positive terminal connection hole; 115. Annular groove; 116. Support part; 117. First insertion hole; 118. Second insertion hole; 12. End cap; 121. Cover body; 122. Insertion part; 13. Sealing ring; 14. Insulating sleeve; 15. Abutment block;

[0030] 2. Output connector; 21. Negative output connector; 211. Negative connector; 212. Negative connection assembly; 22. Positive output connector; 221. Positive connector; 2221. First connecting plate; 2222. Second connecting plate; 223. Safety switch; 2231. Plug connector; 2232. Plug; 2233. Connecting part; 2234. Main body; 2235. Conductive plate;

[0031] 3. Signal connector; 31. Signal input connector; 32. Signal output connector. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] A battery box is a closed or semi-closed structure made of materials such as metal and plastic. It is the physical carrier of the battery pack 200. Its design and manufacturing must meet the safety, reliability and functionality requirements of the battery pack in different usage scenarios.

[0037] like Figures 1 to 9As shown, this embodiment provides a battery box, including a battery box body 100 and an output structure. The battery box body 100 is provided with an end plate 101, which is used to house a battery pack 200 on one side along the first direction X. The end plate 101 is provided with a through hole 102 along the first direction X. The output structure includes a housing 1, an output connector 2, and a signal connector 3. The housing 1 includes a main housing 11, which is configured to be located on the other side of the end plate 101 along the first direction X, and the main housing 11 covers the through hole 102. The output connector 2 is located on the main housing 11, passes through the through hole 102, and is electrically connected to the output conductive bus of the battery pack 200. The signal connector 3 is located on the main housing 11 and is connected to the signal line of the battery management system 300 passing through the through hole 102. The signal connector 3 is used to output battery voltage or temperature signals. The battery box integrates the output connector 2 and the signal connector 3 onto the main housing 11, and fixes the main housing 11 onto the end plate 101. This effectively saves the installation space on the end plate 101 and facilitates the rational allocation of the installation space on the end plate 101. At the same time, since the housing 1 is fixed onto the end plate 101, there is no need for the output connector 2 and the signal connector 3 to be installed separately on the end plate 101, thereby improving the assembly efficiency of the battery box.

[0038] Optionally, the main housing 11 includes a negative electrode socket 111 and a negative electrode connection hole 112 that are interconnected. The negative electrode socket 111 extends along the second direction Y, and the negative electrode connection hole 112 extends along the first direction X and communicates with the through hole 102. The first direction X and the second direction Y are perpendicular. The output connector 2 includes a negative electrode output connector 21, which includes a negative electrode connector 211 and a negative electrode connection assembly 212. The negative electrode connector 211 is inserted into the negative electrode socket 111, and the negative electrode connection assembly 212 is disposed in the negative electrode connection hole 112. The negative electrode connection assembly 212 connects the negative electrode connector 211 and the negative electrode conductive bus 201 of the output conductive bus. In this embodiment, the negative electrode socket 111 is arranged along the second direction Y, which can shorten the length of the battery box 100 along the first direction X. The negative electrode socket 111 and the negative electrode connection hole 112 are arranged at right angles, which is beneficial to shortening the overall size of the negative electrode output connector 21.

[0039] Optionally, the negative electrode connection assembly 212 includes a connector, a first bolt, and a second bolt. The connector is disposed in the negative electrode connection hole 112. The first bolt passes through the negative electrode connector 211 and is screwed to the connector. The second bolt passes through the negative electrode conductive busbar 201 and is screwed to the connector. In this embodiment, the connector is provided with threaded holes at both ends along the axial direction of the negative electrode connection hole 112 to achieve screwing with the first bolt and the second bolt, respectively. The negative electrode conductive busbar 201 is parallel to the end plate 101, thereby making the connector fit snugly against the negative electrode conductive busbar 201, increasing the contact area between the connector and the negative electrode conductive busbar 201, and reducing the resistance.

[0040] Optionally, the main housing 11 includes a positive electrode socket 113 and a positive electrode connection hole 114 that are interconnected. The positive electrode socket 113 extends along the second direction Y, and the positive electrode connection hole 114 extends along the first direction X and communicates with a through hole. The output connector 2 includes a positive electrode output connector 22, which includes a positive electrode connector 221 and a positive electrode connection assembly. The positive electrode connector 221 is inserted into the positive electrode socket 113, and the positive electrode connection assembly is disposed in the positive electrode connection hole 114. The positive electrode connection assembly connects the positive electrode connector 221 and the positive electrode conductive bus 202 of the output conductive bus. In this embodiment, the positive electrode socket 113 is arranged along the second direction Y, which can shorten the length of the battery box 100. The positive electrode socket 113 and the positive electrode connection hole 114 are arranged at right angles, which is beneficial to shorten the overall size of the positive electrode output connector 22.

[0041] Optionally, the angle between the axis of the positive terminal 113 and the axis of the negative terminal 111 is α°, where 90° ≤ α° ≤ 180°. In this embodiment, this arrangement ensures that the connecting wires connected to the positive terminal 221 and the negative terminal 211 maintain a safe distance, effectively preventing short circuits or tangling.

[0042] Optionally, the value of a° can be one of 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170° and 180°.

[0043] Optionally, the distance between the adjacent ends of the negative output connector 21 and the positive output connector 22 is Lmm, where 10mm ≤ Lmm ≤ 500mm. In this embodiment, if the distance between the adjacent ends of the negative output connector 21 and the positive output connector 22 is too small, foreign objects (such as metal shavings, liquids, or tools) may accidentally come into contact with the two poles, leading to a direct short circuit. Simultaneously, insulation failure may occur, causing leakage current or partial discharge. Therefore, the distance between the positive socket 113 and the negative socket 111 needs to be Lmm to ensure a safe distance. If the distance between the adjacent ends of the negative output connector 21 and the positive output connector 22 is too large, it will result in a waste of installation space.

[0044] Optionally, Lmm can be one of 10mm, 50mm, 100mm, 200mm, 300mm, 400mm and 500mm.

[0045] Optionally, the positive connection assembly includes a fuse switch 223, which is connected in series between the positive conductor bus 202 and the positive terminal 221. In this embodiment, the fuse switch 223 is a key component in the circuit system used to protect electrical equipment and lines from damage caused by overloads, short circuits, and other faults. Its core function is to automatically cut off abnormal currents to prevent equipment damage, fire risks, or personal injury.

[0046] Optionally, the positive electrode connection hole 114 is a through hole; the positive electrode connection assembly also includes a first connecting plate 2221 and a second connecting plate 2222. The first connecting plate 2221 is fixedly connected to the main shell 11, one end of the first connecting plate 2221 is located inside the positive electrode connection hole 114, and the other end of the first connecting plate 2221 is fixedly connected to the positive electrode conductive bus 202. The second connecting plate 2222 is fixedly connected to the main shell 11, one end of the second connecting plate 2222 is located inside the positive electrode connection hole 114, and the other end of the second connecting plate 2222 is fixedly connected to the positive electrode connector 221; the safety switch 223 includes two plug-in connectors 2231. The safety switch 223 is inserted into the positive electrode connection hole 114, and the two plug-in connectors 2231 are respectively plugged into one end of the first connecting plate 2221 and one end of the second connecting plate 2222. In this embodiment, the safety switch 223 is inserted from the end of the positive connection hole 114 away from the end plate 101, thereby enabling the two connectors 2231 of the safety switch 223 to be inserted into one end of the first connecting plate 2221 and one end of the second connecting plate 2222, respectively. When the safety switch 223 needs to be replaced, it can be directly pulled out from the end of the positive connection hole 114 away from the end plate 101. The above configuration enables quick insertion and removal of the safety switch 223, improving the installation efficiency of the safety switch 223.

[0047] Optionally, the positive electrode conductive bus 202 is positioned parallel to the end plate 101 opposite to it; the other end of the first connecting plate 2221 is attached to the position where the positive electrode conductive bus 202 and the end plate 101 are opposite. In this embodiment, the other end of the first connecting plate 2221 is attached to the position where the positive electrode conductive bus 202 and the end plate 101 are opposite, thereby increasing the contact area between the first connecting plate 2221 and the positive electrode conductive bus 202, and reducing the resistance at the connection point between the first connecting plate 2221 and the positive electrode conductive bus 202.

[0048] Optionally, the main housing 11 is provided with an abutment block 15, which is located on the side of the first connecting plate 2221 away from the positive electrode conductive bus 202. The bolt passes through the positive electrode conductive bus 202 and the other end of the first connecting plate 2221 and is screwed to the abutment block 15.

[0049] Optionally, one end of the first connecting plate 2221 extends in the same direction as the first direction X, and one end of the second connecting plate 2222 extends in the same direction as the first direction X; the insertion interfaces of the two plug-in connectors 2231 are respectively opposite to one end of the first connecting plate 2221 and one end of the second connecting plate 2222. In this embodiment, when the safety switch 223 is inserted from the end of the positive connection hole 114 away from the end plate 101, the insertion interfaces of the two plug-in connectors 2231 are respectively inserted into one end of the first connecting plate 2221 and one end of the second connecting plate 2222.

[0050] Optionally, the first connecting plate 2221 is L-shaped.

[0051] Optionally, the safety switch 223 further includes a main body 2234. Two conductive plates 2235 protrude from the peripheral wall of the main body 2234. Two plug-in connectors 2231 correspond one-to-one with the two conductive plates 2235. Each plug-in connector 2231 includes an L-shaped plug 2232 and a connecting portion 2233. The connecting portion 2233 is fitted and fixed to the corresponding conductive plate 2235, so that the insertion interfaces of the two plugs 2232 are respectively opposite to one end of the first connecting plate 2221 and one end of the second connecting plate 2222. In this embodiment, the two conductive plates 2235 extend along the second direction Y, and the connecting portion 2233 is attached to the corresponding conductive plate 2235. Since the plug 2232 and the connecting portion 2233 are L-shaped, the insertion interfaces of the plug 2232 are arranged along the first direction X, so as to be opposite to one end of the corresponding first connecting plate 2221 and one end of the second connecting plate 2222.

[0052] Optionally, the plug connector 2231 is a one-piece molded part.

[0053] Optionally, the housing 1 further includes an end cap 12, which is inserted into the end of the positive electrode connection hole 114 away from the end plate 101 and closes one end of the positive electrode connection hole 114. In this embodiment, the end cap 12 can prevent external dust and water from entering the positive electrode connection hole 114, thus avoiding short circuits and corrosion.

[0054] Optionally, the end cap 12 is detachably connected to the main housing 11. In this embodiment, the end cap 12 and the main housing 11 are connected by bolts. Specifically, the main housing 11 has multiple threaded holes around the positive electrode connection hole 114, and the end cap 12 has multiple through holes around its circumference. Multiple bolts pass through the multiple through holes and extend into the multiple threaded holes.

[0055] In other embodiments, the end cap 12 may also be snapped onto the main housing 11.

[0056] Optionally, the housing 1 further includes a sealing ring 13, which seals the gap between the end cap 12 and the main housing 11. In this embodiment, an annular groove 115 is provided at the position opposite to the end cap 12 or at the position opposite to the end cap 12. The positive electrode connection hole 114 is located inside the annular groove 115, and the sealing ring 13 is disposed in the annular groove 115. The end cap 12 is fixed on the main housing 11 so that the end cap 12 and the main housing 11 clamp the sealing ring 13 to seal the gap between the end cap 12 and the main housing 11, further preventing external water and dust from entering the positive electrode connection hole 114.

[0057] Optionally, the sealing ring 13 is an elastic rubber component.

[0058] Optionally, the end cap 12 extends into the positive electrode connection hole 114, and the end cap 12 abuts against the conductive plate 2235. In this embodiment, the end cap 12 includes a cover body 121 and a plug-in portion 122. The plug-in portion 122 is inserted into the positive electrode connection hole 114, and the cover body 121 is located outside the positive electrode connection hole 114 and clamps the sealing ring 13 with the main shell 11. The plug-in portion 122 abuts against the conductive plate 2235 to ensure that the plug interfaces of the two plug-in portions 122 are respectively plugged into one end of the first connecting plate 2221 and one end of the second connecting plate 2222.

[0059] Optionally, the main housing 11 also includes a support portion 116, which is disposed in the positive electrode connection hole 114 and located on the side of the conductive plate 2235 away from the plug portion 122. The plug portion 122 and the support portion 116 limit the conductive plate 2235, thereby limiting the safety switch 223.

[0060] Optionally, the signal connector 3 includes a signal input connector 31 and a signal output connector 32. Both the signal input connector 31 and the signal output connector 32 are fixed to the main housing 11. The signal lines of the battery management system 300 pass through the vias and are connected to the signal input connector 31 and the signal output connector 32. In this embodiment, the main housing 11 is provided with a first insertion hole 117 and a second insertion hole 118, which are respectively opposite to the vias. The signal input connector 31 and the signal output connector 32 are respectively inserted into the first insertion hole 117 and the second insertion hole 118, and the signal input connector 31 and the signal output connector 32 are respectively snapped into the main housing 11 to achieve the fixation of the signal input connector 31 and the signal output connector 32 to the main housing 11. The signal input connector 31 and the signal output connector 32 pass through the vias, and the signal lines of the battery management system 300 are respectively inserted into the signal input connector 31 and the signal output connector 32.

[0061] Optionally, the housing 1 further includes an insulating sleeve 14, which is fixed to the main housing 11 and inserted into the via. The output connector 2 and the signal connector 3 pass through the insulating sleeve 14. In this embodiment, the via includes a positive via 1021, a negative via 1022, and a signal via 1023. The positive output connector 22 passes through the positive via 1021, the negative output connector 21 passes through the negative via 1022, the signal input connector 31 passes through the signal via 1023, and the signal output connector 32 passes through the signal via 1023. The insulating sleeve 14 is provided in three parts and is respectively connected to the negative terminal connection hole 112, the positive terminal connection hole 114, the first insertion hole 117 and the second insertion hole 118. The three insulating sleeves 14 are respectively inserted into the positive terminal through hole 1021, the negative terminal through hole 1022 and the signal through hole 1023 to achieve insulation between the output connector 2 and the end plate 101, and insulation between the signal connector 3 and the end plate 101.

[0062] Optionally, housing 1 is an insulating component.

[0063] This embodiment also provides a battery device, including a battery pack 200 and the battery box in the above-described scheme. The battery pack 200 and the main housing 11 are respectively disposed on both sides of the end plate 101, and the output conductive busbar of the battery pack 200 is connected to the output connector 2. In this embodiment, the end plate 101 divides the battery box 100 into two spaces, which are connected by a through hole on the end plate 101. One space is used to house the battery pack 200, and the other space is used to house the output structure.

[0064] Optionally, the battery device also includes a battery management system, a thermal management system, high-voltage electrical connections and safety devices, and auxiliary components (such as pressure relief valves and fire extinguishing systems). The battery device is a core component that directly provides electrical energy in electric vehicles, energy storage systems, consumer electronics, and other devices.

[0065] Optionally, the battery device also includes two battery management systems 300, each of which is communicatively connected to the battery pack 200. The signal lines of the battery management systems 300 are connected to the signal connector 3. In this embodiment, the two battery management systems 300 provide fault backup, data verification, and dual protection through a primary / backup redundancy or parallel operation mode, ensuring the safe and reliable operation of the battery pack in aerospace, electric vehicles, large-scale energy storage power stations, and other fields. Although this increases production costs, it effectively prevents single points of failure and improves the overall system stability and safety.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery box, characterized in that, include: A battery housing (100) is provided with an end plate (101). The end plate (101) is used to install a battery pack (200) on one side along the first direction (X). The end plate (101) is provided with a through hole (102) along the first direction (X). The output structure includes: The housing (1) includes a main housing (11) configured to be disposed on the other side of the end plate (101) along the first direction (X), and the main housing (11) covers the through hole (102). An output connector (2) is disposed on the main housing (11). The output connector (2) passes through the through hole (102) and is electrically connected to the output conductive bus of the battery pack (200). A signal connector (3) is disposed on the main housing (11). The signal connector (3) is connected to the signal line of the battery management system (300) passing through the via (102). The signal connector (3) is used to output battery voltage or temperature signals.

2. The battery box according to claim 1, characterized in that, The main shell (11) includes a negative electrode socket (111) and a negative electrode connection hole (112) that are interconnected. The negative electrode socket (111) extends along the second direction (Y), and the negative electrode connection hole (112) extends along the first direction (X) and communicates with the through hole (102). The first direction (X) and the second direction (Y) are perpendicular. The output connector (2) includes a negative output connector (21), which includes a negative connector (211) and a negative connection assembly (212). The negative connector (211) is inserted into the negative socket (111), and the negative connection assembly (212) is disposed in the negative connection hole (112). The negative connection assembly (212) connects the negative connector (211) and the negative conductive bus (201) of the output conductive bus.

3. The battery box according to claim 2, characterized in that, The negative electrode connection assembly (212) includes a connector, a first bolt, and a second bolt. The connector is disposed in the negative electrode connection hole (112). The first bolt passes through the negative electrode connector (211) and is screwed to the connector. The second bolt passes through the negative electrode busbar (201) and is screwed to the connector.

4. The battery box according to claim 2, characterized in that, The main housing (11) includes a positive electrode socket (113) and a positive electrode connection hole (114) that are interconnected. The positive electrode socket (113) extends along the second direction (Y), and the positive electrode connection hole (114) extends along the first direction (X) and communicates with the through hole (102). The output connector (2) includes a positive output connector (22), which includes a positive connector (221) and a positive connection component. The positive connector (221) is inserted into the positive socket (113), and the positive connection component is disposed in the positive connection hole (114). The positive connection component connects the positive connector (221) and the positive conductive bus (202) of the output conductive bus.

5. The battery box according to claim 4, characterized in that, The angle between the axis of the positive terminal (113) and the axis of the negative terminal (111) is a°, 90°≤a°≤180°.

6. The battery box according to claim 4, characterized in that, The distance between the ends of the negative output connector (21) and the positive output connector (22) that are close to each other is Lmm, 10mm≤Lmm≤500mm.

7. The battery box according to claim 4, characterized in that, The positive connection assembly includes a safety switch (223), which is connected in series between the positive conductor bus (202) and the positive terminal (221).

8. The battery box according to claim 7, characterized in that, The positive electrode connection hole (114) is a through hole; The positive electrode connection assembly further includes a first connecting plate (2221) and a second connecting plate (2222). The first connecting plate (2221) is fixedly connected to the main shell (11). One end of the first connecting plate (2221) is located inside the positive electrode connection hole (114), and the other end of the first connecting plate (2221) is fixedly connected to the positive electrode conductive bus (202). The second connecting plate (2222) is fixedly connected to the main shell (11). One end of the second connecting plate (2222) is located inside the positive electrode connection hole (114), and the other end of the second connecting plate (2222) is fixedly connected to the positive electrode connector (221). The safety switch (223) includes two plug-in connectors (2231). The safety switch (223) is inserted into the positive terminal connection hole (114). The two plug-in connectors (2231) are respectively plugged into one end of the first connecting plate (2221) and one end of the second connecting plate (2222).

9. The battery box according to claim 8, characterized in that, The positive electrode conductive bus (202) is positioned opposite the end plate (101) so that it is parallel to the end plate (101); The other end of the first connecting plate (2221) is attached to the position opposite to the positive electrode conductive bus (202) and the end plate (101).

10. The battery box according to claim 8, characterized in that, The extension direction of one end of the first connecting plate (2221) is consistent with the first direction (X), and the extension direction of one end of the second connecting plate (2222) is consistent with the first direction (X); The insertion interfaces of the two plug-in connectors (2231) are respectively opposite to one end of the first connecting plate (2221) and one end of the second connecting plate (2222).

11. The battery box according to claim 10, characterized in that, The safety switch (223) also includes a main body (2234), on which two conductive plates (2235) are protruding from the peripheral wall. Two plug connectors (2231) correspond one-to-one with the two conductive plates (2235). Each plug connector (2231) includes an L-shaped plug (2232) and a connecting part (2233). The connecting part (2233) is fitted and fixed to the corresponding conductive plate (2235) so that the plug interfaces of the two plugs (2232) are respectively opposite to one end of the first connecting plate (2221) and one end of the second connecting plate (2222).

12. The battery box according to claim 11, characterized in that, The housing (1) also includes an end cap (12), which is inserted into the end of the positive electrode connection hole (114) away from the end plate (101) and closes one end of the positive electrode connection hole (114).

13. The battery box according to claim 12, characterized in that, The end cap (12) is detachably connected to the main shell (11).

14. The battery box according to claim 12, characterized in that, The housing (1) also includes a sealing ring (13) that seals the gap between the end cap (12) and the main housing (11).

15. The battery box according to claim 12, characterized in that, The end cap (12) extends into the positive electrode connection hole (114), and the end cap (12) abuts against the conductive plate (2235) along the first direction (X).

16. The battery box according to claim 1, characterized in that, The signal connector (3) includes a signal input connector (31) and a signal output connector (32). The signal input connector (31) and the signal output connector (32) are both fixed to the main housing (11). The signal line of the battery management system (300) passes through the via (102) and is connected to the signal input connector (31) and the signal output connector (32).

17. The battery box according to claim 1, characterized in that, The housing (1) also includes an insulating sleeve (14), which is fixed to the main housing (11) and inserted into the through hole (102). The output connector (2) and the signal connector (3) are both inserted through the insulating sleeve (14).

18. The battery box according to claim 1, characterized in that, The housing (1) is an insulating component.

19. A battery device, characterized in that, Includes a battery pack (200) and a battery box according to any one of claims 1-18, wherein the battery pack (200) and the main shell (11) are respectively disposed on both sides of the end plate (101), and the output conductive busbar of the battery pack (200) is connected to the output connector (2).

20. The battery device according to claim 19, characterized in that, It also includes two battery management systems (300), which are respectively connected to the battery pack (200) in communication, and the signal lines of the battery management systems (300) are connected to the signal connector (3).

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