Control device and battery module

Abstract

The present disclosure discloses a control device and a battery module. The control device includes a first housing, a first control module, a first conductive path, a second conductive path, a first switch, and a first control member. The first housing has a first recess. The first control module, the first conductive path, the second conductive path, and the first switch are provided in the first recess. The first control module is close to a first wall and can perform corresponding control according to a state of a battery electrically connected thereto. The first conductive path is in contact with the first wall, and the second conductive path is in contact with the first wall. The first switch is in contact with and electrically connected to the first conductive path and the second conductive path. When observed along a first direction, the first switch and the first control module are spaced apart from each other. The first control member is provided outside the first housing and is connected to the first switch to control the on / off of the first switch. The control device adopts a modular design, so that each module is laid out compactly and space utilization is improved.

Description

Technical Field

[0001] This application relates to the technical field of high - voltage boxes, and particularly to control devices and battery modules.

Background Art

[0002] In recent years, energy storage technology has been constantly developing, the demand for energy storage products at home and abroad has been constantly increasing, and some fields show certain economic efficiency.

[0003] Currently, the development of global energy storage technology mainly focuses on the field of electrochemical energy storage. Particularly, lithium - ion batteries, as highly efficient, clean, and high - recycling - rate energy, are widely applied. The high - voltage distribution box is an important part of the energy storage system. However, the conventional high - voltage box has disadvantages such as low space utilization rate, lack of prominent modular design, poor maintenance performance, and poor compatibility.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of such a situation, it is necessary to provide a control device with a modular design to improve the space utilization rate of the high - voltage box and enhance the maintainability. [[ID=2,7]]

Means for Solving the Problems

[0005] A control device according to one aspect of the present application includes a first shell, a first control module, a first conductive path, a second conductive path, a first switch, and a first control member. The first shell has a first recess and includes a first wall, a second wall, and a bottom wall. The first wall and the second wall are provided facing each other. The bottom wall connects the first wall and the second wall. The first wall, the second wall, and the bottom wall constitute the inner wall of a portion of the first recess. The first control module is provided within the first recess. When observed along a first direction perpendicular to the bottom wall, the first control module is provided between the first wall and the second wall. The first control module is closer to the first wall than its distance from the second wall. The first control module performs control corresponding to the state of a battery electrically connected to it. The first conductive path is provided within the first recess so as to extend along a second direction perpendicular to the first direction. The first conductive path is in contact with the first wall, and the first wall and the second wall face each other in the second direction. The second conductive path is provided within the first recess so as to extend in a second direction. The second conductive path is in contact with the first wall and spaced apart from the first conductive path. The first switch is provided within the first recess and is in contact with both the first and second conductive paths, electrically connecting them. When the control device is observed along the first direction, the first switch and the first control module are spaced apart from each other. The first control member is provided outside the first shell and is positioned opposite the first wall in the second direction. The first control member is connected to the first switch and can control the on / off state of the first switch. Since the control device employs a modular design, each module is laid out compactly, improving space utilization.

[0006] In some embodiments of the present disclosure, when the control device is observed along the first direction, the first control module has a portion that overlaps with the first conductive path.

[0007] In some embodiments of the present disclosure, when the control device is observed along the first direction, the first control module and the first conductive path are spaced apart from each other.

[0008] In some embodiments of the present disclosure, the control device further comprises a second control module, which is located between the first control module and the first conductive path along the first direction.

[0009] In some embodiments of the present disclosure, the second control module is used to perform a corresponding conversion to power input from an external source.

[0010] In some embodiments of the present disclosure, the second control module is electrically connected to the first control module.

[0011] In some embodiments of the present disclosure, the first control module includes a first sub-control module, a second sub-control module, and a third sub-control module. The first sub-control module performs corresponding control according to the state of the battery electrically connected to it. The second sub-control module performs corresponding control according to the state of the sensor electrically connected to it. The third sub-control module performs insulation monitoring by monitoring the resistance value in the first housing.

[0012] In some embodiments of the present disclosure, the first wall has a first opening, the first opening communicates with the first recess, The gas in the first recess is replaceable with the gas outside the first housing through the first opening.

[0013] In some embodiments of the present disclosure, the control device further comprises a ventilation member, The ventilation member is provided on the first wall and faces the first opening, The ventilation member can increase the rate of exchange between the gas in the first recess and the gas outside the first housing.

[0014] In some embodiments of the present disclosure, the first switch has a first state and a second state, When the first switch is in the first state, when observed along the second direction, the first control member has a portion that overlaps with the first opening. When the first switch is in the second state, the first control member and the first opening are spaced apart from each other when observed along the second direction.

[0015] In some embodiments of this disclosure, the first state refers to the disconnection of the electrical connection between the first switch and the first conductive path, and the electrical connection between the first switch and the second conductive path. The second state refers to the establishment of an electrical connection between the first switch and the first conductive path, and an electrical connection between the first switch and the second conductive path.

[0016] In some embodiments of the present disclosure, the control device further comprises a first connecting member, the first connecting member connecting the first control member and the first switch.

[0017] In some embodiments of the present disclosure, the first conductive path includes a first cutting member that can cut the connection passage of the first conductive path when the current flowing through the first conductive path reaches a first threshold, and a second cutting member that can cut the connection passage of the first conductive path when the current flowing through the first conductive path reaches a second threshold.

[0018] In some embodiments of the present disclosure, the first conductive path includes at least one of the following: (a) the first cutting member includes a fuse, and the second cutting member includes a fuse; (b) the material of the first conductive path includes copper.

[0019] In some embodiments of the present disclosure, the second conductive path includes a third cutting member that can disconnect the connection passage of the second conductive path when the current flowing through the second conductive path reaches a third threshold, and a fourth cutting member that can disconnect the connection passage of the second conductive path when the current flowing through the second conductive path reaches a fourth threshold.

[0020] In some embodiments of the present disclosure, the second conductive path satisfies at least one of (I) and (II). (I) The third cutting member includes a fuse, and the fourth cutting member includes a fuse. (II) The material of the second conductive path includes copper.

[0021] A battery module according to another aspect of the present disclosure includes a second housing, a plurality of battery cells, and the control device described in any one of the above embodiments. The plurality of battery cells are provided in the second housing and are connected to the control device. The plurality of battery cells and the control device are stacked along the first direction.

[0022] In some embodiments of the present disclosure, in a third direction perpendicular to the first direction and the second direction, The length of the control device is a first distance, the length of the battery cell is a second distance, and the first distance is equal to the second distance.

[0023] In some embodiments of the present disclosure, the battery module further includes a lead wire, and the lead wire electrically connects the control device and at least one of the battery cells.

[0024] In some embodiments of the present disclosure, the battery cell includes an electrode assembly, a first terminal, and a second terminal. The first terminal and the second terminal are provided on the same side of the electrode assembly and are electrically connected to the electrode assembly. In the second direction, the first terminal and the second terminal are closer to the first wall than the second wall.

[0025] In some embodiments of the present disclosure, in the first direction, the control device is provided between two adjacent battery cells.

[0026] In some embodiments of the present disclosure, in the second direction, the length of the control device is a third distance, the length of the battery cell is a fourth distance, and the third distance is equal to the fourth distance.

[0027] Based on the above, the control device of this application improves space utilization by adopting a modular design. [Brief explanation of the drawing]

[0028] [Figure 1] This is a first schematic diagram of a control device in one embodiment of the present invention. [Figure 2] Figure 1 is a schematic diagram of the disassembled state. [Figure 3] The first schematic diagram shows the internal structure of the control device in one embodiment of the present invention after the ceiling wall has been removed. [Figure 4] The second schematic diagram shows the internal structure of the control device in one embodiment of the present invention after the ceiling wall has been removed. [Figure 5] This is a schematic diagram of the structure of a relay unit in one embodiment of the present invention. [Figure 6] This is a configuration diagram of the control device when the first switch is in the first state in one embodiment of the present invention. [Figure 7] This is a configuration diagram of the control device when the first switch is in the second state in one embodiment of the present invention. [Figure 8] This is a schematic diagram of a partial structure of the control device in one embodiment of the present invention, when the first switch is in the second state and the panel is removed. [Figure 9] This is a configuration diagram of the control device in one embodiment of the present invention when the first switch is in the first state and the panel is removed. [Figure 10] This is a configuration diagram of the control device when the first switch is in the first state in one embodiment of the present invention. [Figure 11] This is a second schematic diagram of a control device in one embodiment of the present invention. [Figure 12] This is a cross-sectional view along the line A-A in Figure 11. [Figure 13] This is a schematic diagram of the structure of the first sub-control module in one embodiment of the present invention. [Figure 14] This is a schematic diagram of the structure of the second sub-control module in one embodiment of the present invention. [Figure 15] This is a schematic diagram of the structure of the third sub-control module in one embodiment of the present invention. [Figure 16] This is a schematic diagram of the structure of the fourth sub-control module in one embodiment of the present invention. [Figure 17] This is a diagram showing the configuration of the second control module in one embodiment of the present invention. [Figure 18] This is a first schematic diagram of a battery module in one embodiment of the present invention. [Figure 19] This is a second schematic diagram of a battery module in one embodiment of the present invention. [Figure 20] This is a third schematic diagram of a control device in one embodiment of the present invention. [Figure 21] This is a schematic diagram of the structure of a battery cell in one embodiment of the present invention. The present invention will be further described in the following specific embodiments based on the above drawings. [Modes for carrying out the invention]

[0029] The following describes the technical aspects of the embodiments of the present application with reference to the drawings of the embodiments. However, it is clear that the embodiments described are only a selection of the embodiments of the present application, and not all embodiments.

[0030] It needs to be explained that when one component is described as being "connected" to another component, it may be directly connected to the other component, or there may be an intermediate component simultaneously. Similarly, when a component is described as being "provided" to another component, it may be directly provided to the other component, or there may be an intermediate component simultaneously.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of this application. Terms used herein are for illustrative purposes only and are not intended to limit this application. The terms "and / or" as used herein include any and all combinations of one or more related enumerated items.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by an expert in the art of this application. Terms used herein are solely for the purpose of describing specific embodiments and are not intended to limit this application. For example, in this specification, the term “perpendicular” is used to describe an ideal state between two parts. In actual manufacturing or use, a nearly perpendicular state may exist between two parts. For example, in numerical terms, “perpendicular” may mean that the angular range between two straight lines is 90 ± 10°, or that the angular range between two planes is 90 ± 10°, or that the angular range between a straight line and a plane is 90 ± 10°. Two parts described as “perpendicular” do not have to be absolute straight lines or planes, but may be nearly straight lines or planes. Macroscopically, a part can be considered a “straight line” or “plane” if its overall direction of extension is a straight line or plane.

[0033] The control device according to the embodiment of the present application includes a first housing, a first control module, a first conductive path, a second conductive path, a first switch, and a first control member. The first housing has a first recess, and the first housing includes a first wall, a second wall, and a bottom wall, the first wall being provided opposite the second wall, and the bottom wall connecting the first wall and the second wall. The first wall, the second wall, and the bottom wall constitute the inner wall of a part of the first recess. The first control module is provided in the first recess. When the control device is observed along a first direction perpendicular to the bottom wall, the distance between the first control module and the first wall is smaller than the distance between the first control module and the second wall. The first control module can perform control corresponding to the state of a battery electrically connected to the first control module. The first conductive path is provided in the first recess so as to extend along a second direction perpendicular to the first direction. The first conductive path is in contact with the first wall, and the first wall and the second wall are opposite in the second direction. The second conductive path is provided within the first recess so as to extend along the second direction, and the second conductive path is in contact with the first wall and spaced apart from the first conductive path. The first switch is provided within the first recess and is in contact with the first conductive path and the second conductive path, electrically connecting the first conductive path and the second conductive path. When the control device is observed along the first direction, the first switch is spaced apart from the first control module. The first control member is provided outside the first housing. The first control member and the first wall are provided facing each other along the second direction. The first control member is connected to the first switch and can control the on / off state of the first switch. Since the above control device employs a modular design, each module is laid out compactly, improving space utilization.

[0034] The embodiments of this application will be further described below with reference to the drawings.

[0035] As shown in Figures 1, 2, 3, and 4, an embodiment of the present invention provides a control device 3 for electrically connecting to a battery cell and controlling the charging and discharging of the battery cell. The control device 3 includes a first housing 31, a first control module 321, a first conductive path 331, a second conductive path 332, a first switch 341, and a first control member 342.

[0036] The first housing 31 has a first recess 310. The first control module 321, the first conductive path 331, the second conductive path 332, and the first switch 341 are located within the first recess 310.

[0037] The first enclosure 31 includes a first wall 311, a second wall 312, a third wall 313, a fourth wall 314, a bottom wall 315, and a top wall 316. The first wall 311 and the second wall 312 are positioned opposite each other along the second direction Y. The third wall 313 and the fourth wall 314 are positioned opposite each other along the third direction X, which is perpendicular to the second direction Y. Both ends of the third wall 313 and the fourth wall 314 are connected to the first wall 311 and the second wall 312. The top wall 316 and the bottom wall 315 are positioned opposite each other along the first direction Z, which is perpendicular to the second direction Y and the third direction X, and are both connected to the first wall 311, the second wall 312, the third wall 313, and the fourth wall 314. The first wall 311, the second wall 312, the third wall 313, the fourth wall 314, and the bottom wall 315 surround the first recess 310, where the first direction Z is perpendicular to the bottom wall 315. In one embodiment, the first wall 311 has a first surface 3113 located away from the first recess 310.

[0038] The directional terms "top" and "bottom" used herein are for supplementary explanation to facilitate understanding of this application in accordance with the attached drawings and are not intended to limit this application. For example, the following explanation will use the bottom wall 315 as the bottom and the top wall 316 as the top.

[0039] The first control module 321 is electrically connected to the battery cell and other modules within the first housing 31, and not only controls the charging and discharging of the battery according to the state of the battery cell, but can also control the charging and discharging of the battery cell based on information from the other modules. Furthermore, the first control module 321 collects voltage and current information within the control device 3 to monitor whether there is a short-circuit problem within the control device 3.

[0040] Observing along the first direction Z, the first control module 321 is located between the first wall 311 and the second wall 312. Furthermore, the first control module 321 is closer to the first wall 311 than to the second wall 312. Observing along the second direction Y, the first control module 321 is located between the bottom wall 315 and the top wall 316, and is closer to the bottom wall 315 than to the top wall 316. In the second direction Y, the first control module 321 is closer to the first wall 311 than to the second wall 312. By positioning the first control module 321 close to the first wall 311, it is easier to arrange lead wires, and the lead wires can be connected to the first control module 321 through the first wall 311, thereby increasing space utilization.

[0041] In one embodiment, the first control module 321 includes a first sub-control module 3211, a second sub-control module 3212, and a third sub-control module 3213. The first sub-control module 3211, the second sub-control module 3212, and the third sub-control module 3213 are electrically connected to each other.

[0042] The first sub-control module 3211 is electrically connected to the battery cell and can perform corresponding control according to the state of the battery cell. For example, the first sub-control module 3211 can control the charging and discharging of the battery cell 2 based on information about the voltage and temperature of the battery cell. In one embodiment, the first sub-control module 3211 includes a BCU module (Battery Computer Unit, abbreviated as BCU) that can be used to collect information about the voltage and temperature of the battery cell.

[0043] The second sub-control module 3212 is electrically connected to the battery cell's sensor and can perform corresponding control on the battery cell based on the sensor information. Optionally, the second sub-control module 3212 is electrically connected to the BCU module. In one embodiment, the second sub-control module 3212 includes a BAMS module (Battery Array Management System, abbreviated as BAMS). In one embodiment, the second sub-control module 3212 is electrically connected to and communicates with an external PCS module (Power Conversion System, abbreviated as PCS). In one embodiment, the second sub-control module 3212 is electrically connected to and communicates with an external EMS module (Energy Management System, abbreviated as EMS).

[0044] The third sub-control module 3213 collects voltage and current information within the control device 3 and performs insulation monitoring to monitor whether there is a short-circuit problem within the control device 3, thereby improving the safety performance of the control device 3. In this application, insulation monitoring by the third sub-control module 3213 allows the control device 3 to monitor the resistance between the positive electrode connecting member connected to the battery cell, the negative electrode connecting member, and the first housing 31. If this resistance value is clearly abnormal, a short-circuit failure may occur. In one embodiment, the third sub-control module 3213 includes an IVU module.

[0045] In one embodiment, the first control module 321 further includes a fourth sub-control module 3214. The first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, and the fourth sub-control module 3214 are electrically connected to each other. The fourth sub-control module 3214 collects monitoring data of the environment in which the control device 3 is located, and can collect information such as temperature, smoke, curfew, or water restrictions of the environment in which the control device 3 is located. In one embodiment, the fourth sub-control module 3214 includes an ESU module (Environment Unit) for monitoring the temperature and humidity of the environment in which the fourth sub-control module 3214 is located. Sensing Includes Unit (abbreviated as ESU).

[0046] In one embodiment, the control device 3 further includes a second control module 322 provided in the first recess 310. In the first direction Z, the second control module 322 is provided between the first control module 321 and the first conductive path 331, thereby increasing the space utilization rate within the first housing 31. In one embodiment, the second control module 322 is electrically connected to the first control module 321. In one embodiment, the second control module 322 is electrically connected to an external power supply and can perform corresponding conversions to the power input from the external power supply. For example, the second control module 322 is used to regulate the voltage or current input from the external power supply.

[0047] Refer to Figures 2, 4, and 5 together. In one embodiment, the control device 3 further includes a relay unit 340. The relay unit 340 is provided in the first recess 310 and connected to the first control module 321 and the second control module 322. Specifically, the relay unit 340 is electrically connected to the first control module 321, the first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, and the fourth sub-control module 3214, causing the first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, and the fourth sub-control module 3214 to be electrically connected to each other, and causing all of these modules to be electrically connected to the first control module 321.

[0048] In one embodiment, the first control module 321, the first sub-control module 3211, the second sub-control module 3212, and the third sub-control module 3213 are connected to the relay unit 340 by plugging. In one embodiment, the relay unit 340 includes a relay board 3401, a first relay member 3402, a second relay member 3403, and a third relay member 3404. The first relay member 3402, the second relay member 3403, and the third relay member 3404 are provided on the relay board 3401 and protrude from the relay board 3401 along a fourth direction Y' opposite to the second direction Y. The first relay member 3402 is used to connect to the first sub-control module 3211. The second relay member 3403 is used to connect to the second sub-control module 3212. Third relay member 3404 This is used to connect to the third sub-control module 3213.

[0049] In one embodiment, the fourth sub-control module 3214 is connected to the relay unit 340 via a connector (not shown).

[0050] Refer to Figures 1, 2, 3, and 4. Observing along the first direction Z, the first switch 341 is spaced apart from the first control module 321. In the second direction Y, a portion of the first conductive path 331 is located between the first switch 341 and the first control module 321. The first switch 341 is closer to the second wall 312 than to the first wall 311. Because the first switch 341 is close to the second wall 312 and the first control module 321 is close to the first wall 311, mutual interference between the first switch 341 and the first control module 321 in signal transmission can be reduced, improving the rationality of the module layout and space utilization within the first housing 31.

[0051] The first control member 342 is provided outside the first housing 31 and is positioned opposite the first wall 311 along the second direction Y. The first control member 342 is also connected to the first switch 341 and can control the on / off state of the first switch 341.

[0052] In one embodiment, the control device 3 further includes a first connecting member 343 that connects a first control member 342 and a first switch 341. The first control member 342 can control the on / off state of the first switch 341 via the first connecting member 343.

[0053] In one embodiment, the first control member 342 includes an operating section 3421 located on the opposite side of the panel 35 from the first housing 31. The operating section 3421 is rotatably connected to the panel 35. By rotating the operating section 3421, the first control member 342 can control the on / off state of the first switch 341.

[0054] In one embodiment, the operating unit 3421 is connected to the first connecting member 343, and the first connecting member 343 can be rotated so that the first switch 341 switches between on and off.

[0055] In one embodiment, the control device 3 further includes a panel 35 provided outside the first housing 31. The panel 35 is detachably connected to the first housing 31 and is positioned opposite the first wall 311 along the second direction Y. In one embodiment, a third wall 313 and a fourth wall 314 extend and protrude from the first wall 311 along the fourth direction Y'. The panel 35 is fitted to the portions of the third wall 313 and the fourth wall 314 that protrude from the first wall 311. There is a gap between the panel 35 and the first wall 311. In one embodiment, the panel 35 has a second surface 355 located on the opposite side of the first wall 311.

[0056] The first control member 342 is provided on the panel 35. Along the fourth direction Y', at least a portion of the first control member 342 protrudes from the second surface 355.

[0057] In one embodiment, the first conductive path 331 is provided to extend along the second direction Y. The first conductive path 331 is in contact with the first wall 311 and is electrically connected to the first switch 341. In one embodiment, when observed along the first direction Z, the first control module 321 overlaps with the first conductive path 331; that is, the first control module 321 and the first conductive path 331 are arranged to overlap along the first direction Z. This increases the space utilization rate within the first housing 31. In one embodiment, the first control module 321 and the first conductive path 331 are spaced apart from each other along the first direction Z, so mutual interference between the first control module 321 and the first conductive path 331 can be reduced. The first conductive path 331 includes a first portion 331a and a second portion 331b. The first part 331a and the second part 331b are both in contact with the first wall 311 and are electrically connected to the first switch 341. When observed along the first direction Z, the first part 331a and the second part 331b are spaced apart along the third direction X.

[0058] The second conductive path 332 is provided to extend along the second direction Y. The second conductive path 332 is in contact with the first wall 311 and is electrically connected to the first switch 341. The second conductive path 332 includes a third portion 332a and a fourth portion 332b. Both the third portion 332a and the fourth portion 332b are in contact with the first wall 311 and are electrically connected to the first switch 341. When observed along the first direction Z, there is an overlapping portion between the third portion 332a and the fourth portion 332b. The end of the third portion 332a that is in contact with the first wall 311 and the end of the fourth portion 332b that is in contact with the first wall 311 are spaced apart along the third direction X.

[0059] Since the second conductive path 332 and the first conductive path 331 are separated, mutual interference between the second conductive path 332 and the first conductive path 331 can be reduced.

[0060] In one embodiment, the first switch 341 is electrically connected to the first conductive path 331. In another embodiment, the first switch 341 is electrically connected to the second conductive path 332.

[0061] In one embodiment, the first conductive path 331 includes a first cutting member 3311a and a second cutting member 3311b. The first cutting member 3311a can cut the connection path of the first portion 331a when the current flowing through the first portion 331a reaches a first threshold. The second cutting member 3311b can cut the connection path of the second portion 331b when the current flowing through the second portion 331b reaches a second threshold. This improves the safety performance of the control device 3. In one embodiment, the first cutting member 3311a is connected to the first portion 331a, and the second cutting member 3311b is connected to the second portion 331b.

[0062] In one embodiment, the first cutting member 3311a includes a fuse. In one embodiment, the length of the first cutting member 3311a is less than the length of the first conductive path 331.

[0063] In one embodiment, the second cutting member 3311b includes a fuse. In one embodiment, the length of the second cutting member 3311b is less than the length of the first conductive path 331.

[0064] In one embodiment, the material of the first conductive path 331 includes copper.

[0065] In one embodiment, the second conductive path 332 includes a third cutting member 3321a that can cut the connection path of the third portion 332a when the current flowing through the third portion 332a reaches a third threshold, and a fourth cutting member 3321b that can cut the connection path of the fourth portion 332b when the current flowing through the fourth portion 332b reaches a fourth threshold. This improves the safety of the control device 3. In one embodiment, the third cutting member 3321a is connected to the third portion 332a, and the fourth cutting member 3321b is connected to the fourth portion 332b.

[0066] In one embodiment, the third cutting member 3321a includes a fuse. In one embodiment, the length of the third cutting member 3321a is less than the length of the second conductive path 332.

[0067] In one embodiment, the fourth cutting member 3321b includes a fuse. In one embodiment, the length of the fourth cutting member 3321b is less than the length of the second conductive path 332.

[0068] In one embodiment, the material of the second conductive path 332 includes copper.

[0069] In one embodiment, the control device 3 further comprises a first control unit 3341 provided within the first housing 31 and connected to the third portion 332a. The first control unit 3341 can control the opening and closing of the third portion 332a. Optionally, the first control unit 3341 includes a relay.

[0070] In one embodiment, the control device 3 further comprises a second control unit 3342 provided within the first housing 31 and connected to the fourth section 332b. The second control unit 3342 can control the opening and closing of the fourth section 332b. Optionally, the second control unit 3342 includes a relay.

[0071] In one embodiment, the control device 3 further comprises a second connecting member 344 and a third connecting member 345. The second connecting member 344 and the third connecting member 345 are provided on the first wall 311 and protrude from the first surface 3113 along the fourth direction Y'. The first portion 331a is in contact with the second connecting member 344 and electrically connected. The second portion 331b is in contact with the third connecting member 345 and electrically connected. The second connecting member 344 and the third connecting member 345 are used to electrically connect to the battery cell. As a result, the control device 3 and the battery cell form a closed circuit for controlling the battery cell.

[0072] In one embodiment, the lead wire includes a first lead wire 51, and the second connecting member 344 electrically connects the battery cell via the first lead wire 51. In another embodiment, the lead wire includes a second lead wire 52, and the third connecting member 345 electrically connects the battery cell via the second lead wire 52.

[0073] In one embodiment, the control device 3 further comprises a fourth connecting member 346 and a fifth connecting member 347. The fourth connecting member 346 and the fifth connecting member 347 are provided on the first wall 311 and protrude from the first surface 3113 along the fourth direction Y'. The third portion 332a is in contact with the fourth connecting member 346 and electrically connected. The fourth portion 332b is in contact with the fifth connecting member 347 and electrically connected. The fourth connecting member 346 and the fifth connecting member 347 are used to connect to a Power Conversion System (PCS) so that the Power Conversion System forms a closed circuit with the control device 3. In this way, by controlling the charging and discharging of the battery cells through the control device 3, protective charging and discharging of the battery cells can be achieved, and the safe operation of the battery cells can be ensured.

[0074] In one embodiment, the lead wire includes a third lead wire 53. The fourth connecting member 346 is electrically connected to an energy storage current transformer (not shown) outside the control device 3 via the third lead wire 53. In one embodiment, the lead wire includes a fourth lead wire 54. The fifth connecting member 347 is electrically connected to an energy storage current transformer outside the control device 3 via the fourth lead wire 54.

[0075] In one embodiment, the first wall 311 has a first opening 3111, the first opening 3111 communicates with a first recess 310, and the gas in the first recess 310 can be exchanged with gas outside the first housing 31 via the first opening 3111.

[0076] In one embodiment, the control device 3 further comprises a ventilation member 38. The ventilation member 38 is provided on the first wall 311 and is positioned opposite the first opening 3111 along the second direction Y. The ventilation member 38 can increase the exchange rate between the gas in the first recess 310 and the gas outside the first housing 31, which is advantageous for increasing the heat dissipation rate of the control device 3. In one embodiment, the ventilation member 38 includes, but is not limited to, a fan or an air conditioner.

[0077] In one embodiment, the control device 3 further includes a temperature sensor 391 provided in the first recess 310 and capable of monitoring the temperature of each module within the control device 3. In one embodiment, along the second direction Y, the temperature sensor 391 is provided between the first switch 341 and the first control module 321 to increase the space utilization rate within the first housing 31. In one embodiment, the temperature sensor 391 is closer to the first control module 321 and the second control module 322 than to the distance from the first switch 341. This allows the temperature sensor 391 to monitor the temperatures of the first control module 321 and the second control module 322. The second sub-control module 3212 is electrically connected to the temperature sensor 391 and the ventilation member 38 to control the operation and stopping of the ventilation member 38 based on the temperature information detected by the temperature sensor 391, so that the temperature of each module within the control device 3 is within a safe range, thereby reducing unexpected risks due to high temperatures in the control device 3. In one embodiment, the second sub-control module 3212 is electrically connected to the temperature sensor 391 via the fifth lead wire 7.

[0078] In one embodiment, the panel 35 has a second opening 351, which communicates with the first recess 310. Optionally, along the second direction Y, the second opening 351 is positioned opposite the first opening 3111, and the projection of the second opening 351 overlaps with the projection of the first opening 3111, thereby increasing the velocity at which gas flows through the first opening 3111 and the second opening 351, and increasing the heat dissipation rate of the control device 3.

[0079] Optionally, there may be multiple second openings 351, which are arranged in an array along the first direction Z and the third direction X. In one embodiment, the hole diameter of the first opening 3111 may be D1, and the hole diameter of the second opening 351 may be D2, with D1 > D2. Optionally, 0.5 mm ≤ D2 ≤ 3 mm. This reduces the risk of external impurities entering the first housing 31 through the second openings 351.

[0080] In one embodiment, the control device 3 further has a third opening 361, a fourth opening 362, and a fifth opening 363. The third opening 361, the fourth opening 362, and the fifth opening 363 are located between the first wall 311 and the panel 35, and all communicate with the space between the first wall 311 and the panel 35. The third opening 361 and the fourth opening 362 are provided opposite each other along the third direction X. The third opening 361 is located at one end of the panel 35 along the third direction X, the fourth opening 362 is located at the other end of the panel 35 along the third direction X, and the fifth opening 363 is located at the lower end of the panel 35 along the first direction Z. The third opening 361, the fourth opening 362, and the fifth opening 363 can accommodate lead wires, are advantageous for lead wire arrangement, and can also allow gas to flow through them to accelerate heat dissipation. The third opening 361 can pass through the third lead wire 53 and the fourth lead wire 54, and the fourth opening 362 can pass through the first lead wire 51 and the second lead wire 52. Alternatively, the fifth opening 363 may pass through at least one of the first lead wire 51, the second lead wire 52, the third lead wire 53, and the fourth lead wire 54.

[0081] In one embodiment, the control device 3 further has a sixth opening 364 provided in the top wall 316. The sixth opening 364 communicates with the space between the first wall 311 and the panel 35, allowing lead wires to connect from the top surface of the control device 3 to the first wall 311 or the panel 35, and facilitating the arrangement of lead wires. Optionally, the sixth opening 364 can allow the first lead wire 51 and the second lead wire 52 to pass through.

[0082] In one embodiment, the control device 3 further comprises a second control member 348 provided in a second control module 322. Panel 35 includes a second surface 355 away from the second wall 312. The second control member 348 partially extends from the second surface 355 along a fourth direction Y'. The second control member 348 is electrically connected to the first switch 341 and can control the on / off state of the first switch 341 based on voltage and current information within the control device 3. For example, if a short circuit or overload occurs within the control device 3, the second control member 348 can disconnect the closed passages between the first switch 341 and the first conductive path 331 and the second conductive path 332. Optionally, the second control member 348 includes an air switch.

[0083] In one embodiment, the control device 3 further comprises a third control member 349 provided on the panel 35 and partially extending from the second surface 355 along the fourth direction Y'. The third control member 349 is electrically connected to the first switch 341 and used to block the closed passage between the first switch 341 and the first conductive path 331 and the second conductive path 332. Optionally, the third control member 349 includes an emergency stop button. By pressing the emergency stop button, the closed passage between the first switch 341 and the first conductive path 331 and the second conductive path 332 can be immediately blocked.

[0084] Refer to Figures 3, 4, 6, and 7 together. In one embodiment, the first switch 341 has a first state and a second state. In one embodiment, when the first switch 341 is in the first state, the first part 331a and the second part 331b are in the off state, and the third part 332a and the fourth part 332b are in the off state. When the first switch 341 is in the second state, the first part 331a and the second part 331b are in the on state, and the third part 332a and the fourth part 332b are in the on state.

[0085] As shown in Figure 6, when the first switch 341 is in the first state, when observed along the second direction Y, the operating section 3421 overlaps with the second opening 351. Alternatively, when the first switch 341 is in the first state, the longitudinal direction of the operating section 3421 is parallel to the third direction X.

[0086] As shown in Figure 7, when the first switch 341 is in the second state, when observed along the second direction Y, the operating section 3421 and the second opening 351 are spaced apart from each other, and the operating section 3421 and the first opening 3111 are also spaced apart from each other. Alternatively, when the first switch 341 is in the second state, the longitudinal direction of the operating section 3421 is parallel to the first direction Z, and the longitudinal direction of the operating section 3421 is perpendicular to the third direction X.

[0087] As shown in Figure 8, when the first switch 341 is in the second state, the operating section 3421 and the first opening 3111 are spaced apart when observed along the second direction Y. In addition, the operating section 3421 overlaps with the first control module 321, which restricts the removal of the first control module 321.

[0088] Refer to Figures 2, 8, 9, and 10 as well. The first wall 311 includes a first plate 3112 that connects the third wall 313 and the fourth wall 314. There is a gap 317 between the first plate 3112 and the bottom wall 315. The first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, and the fourth sub-control module 3214 are provided in the gap 317 between the first plate 3112 and the bottom wall 315.

[0089] Optionally, the first sub-control module 3211 and the second sub-control module 3212 are positioned opposite each other along the first direction Z, the third sub-control module 3213 and the fourth sub-control module 3214 are also positioned opposite each other along the first direction Z, the first sub-control module 3211 and the third sub-control module 3213 are positioned opposite each other along the third direction X, and the second sub-control module 3212 and the fourth sub-control module 3214 are positioned opposite each other along the third direction X. Along the first direction Z, the first sub-control module 3211 is located between the first plate 3112 and the second sub-control module 3212, and the third sub-control module 3213 is located between the first plate 3112 and the fourth sub-control module 3214.

[0090] In one embodiment, the first sub-control module 3211 has a first side plate 32112 that is detachably connected to the first housing 31. In one embodiment, the first side plate 32112 is connected to the first housing 31, and the first sub-control module 3211 is connected to the relay unit 340. In one embodiment, after disconnecting the first side plate 32112 from the first housing 31, the first sub-control module 3211 can be pulled out from the first recess 310 by pulling the first side plate 32112, thereby separating the first sub-control module 3211 from the relay unit 340.

[0091] In one embodiment, the first side plate 32112 is detachably connected to the first housing 31 via screws.

[0092] In one embodiment, the second sub-control module 3212 has a second side plate 32122, which is detachably connected to the first housing 31. In one embodiment, the second side plate 32122 is connected to the first housing 31, and the second sub-control module 3212 is connected to a relay unit 340. In one embodiment, after disconnecting the second side plate 32122 from the first housing 31, the second sub-control module 3212 can be pulled out of the first recess 310 by pulling the second side plate 32122, thereby separating the second sub-control module 3212 from the relay unit 340.

[0093] In one embodiment, the second side plate 32122 is detachably connected to the first housing 31 by screws.

[0094] In one embodiment, the third sub-control module 3213 has a third side plate 32132, which is detachably connected to the first housing 31. In one embodiment, the third side plate 32132 is connected to the first housing 31, and the third sub-control module 3213 is connected to a relay unit 340. In one embodiment, after disconnecting the third side plate 32132 from the first housing 31, the third sub-control module 3213 can be pulled out of the first recess 310 by pulling the third side plate 32132, thereby separating the third sub-control module 3213 from the relay unit 340.

[0095] In one embodiment, the third side plate 32132 is detachably connected to the first housing 31 by screws.

[0096] In one embodiment, the fourth sub-control module 3214 has a fourth side plate 32142, which is detachably connected to the first housing 31. In one embodiment, the fourth side plate 32142 is connected to the first housing 31, and the fourth sub-control module 3214 is connected to a relay unit 340. In one embodiment, after disconnecting the fourth side plate 32142 from the first housing 31, the fourth sub-control module 3214 can be pulled out from the first recess 310 by pulling the fourth side plate 32142, thereby separating the fourth sub-control module 3214 from the relay unit 340.

[0097] In one embodiment, the fourth side plate 32142 is detachably connected to the first housing 31 via screws.

[0098] As shown in Figures 11 and 12, in one embodiment, the second control module 322 is located on the side opposite to the bottom wall 315 of the first sub-control module 3211 and the third sub-control module 3213, while the first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, and the fourth sub-control module 3214 are arranged adjacent to the second control module 322. This simplifies the layout of the relay unit 340, makes it convenient to connect to the relay unit 340 simultaneously, and improves space utilization.

[0099] As shown in Figures 2, 7, and 8, in one embodiment, the second control module 322 has a fifth side plate 3222, which is detachably connected to the first housing 31. In one embodiment, the fifth side plate 3222 is connected to the first housing 31, and the second control module 322 is connected to a relay unit 340. In one embodiment, after disconnecting the fifth side plate 3222 from the first housing 31, the second control module 322 can be pulled out from the first recess 310 by pulling the fifth side plate 3222, thereby separating the second control module 322 from the relay unit 340.

[0100] In one embodiment, the fifth side plate 3222 is detachably connected to the first housing 31 via screws.

[0101] In one embodiment, the panel 35 includes a second plate 352 and a third plate 353, the third plate 353 being detachably connected to the second plate 352. In one embodiment, the third plate 353 is detachably connected to the second plate 352 by screws.

[0102] In one embodiment, along the second direction Y, there is an overlap between the projections of the first side plate 32112, the second side plate 32122, the third side plate 32132, and the fourth side plate 32142 and the projection of the third plate 353. Optionally, the first side plate 32112, the second side plate 32122, the third side plate 32132, and the fourth side plate 32142 are projected within the projection of the third plate 353. Removing the third plate 353 allows manipulation of the first side plate 32112, the second side plate 32122, the third side plate 32132, and the fourth side plate 32142.

[0103] In one embodiment, panel 35 further includes a fourth plate 354 provided between a second plate 352 and a third plate 353, and connecting the second plate 352 and the third plate 353. The fourth plate 354 is removably connected to the second plate 352. The third plate 353 is removably connected to the fourth plate 354.

[0104] In one embodiment, along the second direction Y, the projection of the fifth side plate 3222 overlaps with the projection of the fourth plate 354. Optionally, the projection of the fifth side plate 3222 is within the projection of the fourth plate 354. After removing the fourth plate 354, the fifth side plate 3222 can be manipulated.

[0105] In one embodiment, the first control member 342 is provided on the fourth plate 354.

[0106] When the first switch 341 is in the second state, the electrical connection between the first switch 341 and the first conductive path 331 and the second conductive path 332 is conductive. When observed along the second direction Y, the operating part 3421 overlaps with the third plate 353. Optionally, when the first switch 341 is in the second state, it is possible to restrict workers from removing the third plate 353 from the fourth plate 354, and to restrict workers from operating the first side plate 32112, the second side plate 32122, the third side plate 32132, and the fourth side plate 32142 without turning off the power, thereby reducing the impact on workers.

[0107] As shown in Figures 2, 9, and 10, when the first switch 341 is in the first state, the electrical connection between the first switch 341 and the first conductive path 331 and the second conductive path 332 is interrupted. When observed along the second direction Y, the operating section 3421 and the third plate 353 are spaced apart from each other. At this time, after removing the third plate 353 from the fourth plate 354, operating the first side plate 32112, the second side plate 32122, the third side plate 32132, and the fourth side plate 32142 provides high safety. Optionally, when the first switch 341 is in the first state, the panel 35 can be removed from the first housing 31 to operate the first wall 311 and the lead wires connected to the first wall 311, providing high safety.

[0108] Optionally, a second opening 351 is provided in the fourth plate 354.

[0109] Optionally, the second control member 348 protrudes from the fourth plate 354.

[0110] Optionally, the third control member 349 protrudes from the second plate 352.

[0111] As shown in Figures 2, 13, 14, 15, and 16, in one embodiment, the first sub-control module 3211 further has a first substrate 32111 connected to the first side plate 32112. The first substrate 32111 is slidable along the second direction Y relative to the first housing 31. This allows the first side plate 32112 to move the first sub-control module 3211 out of the first housing 31, thereby allowing maintenance of the first sub-control module 3211.

[0112] In one embodiment, the first sub-control module 3211 includes a first chip module 32113 provided on the first substrate 32111. The first chip module 32113 is electrically connected to each component in the first sub-control module 3211 and performs corresponding control over these components.

[0113] In one embodiment, the first sub-control module 3211 further includes a first power supply module 32114 provided on the first substrate 32111. The first power supply module 32114 is electrically connectable to the first chip module 32113 and also electrically connectable to other components other than the first chip module 32113, such as memory. The first power supply module 32114 can supply power to other components in the first sub-control module 3211.

[0114] In one embodiment, the first sub-control module 3211 further comprises a plurality of first communication connection units 32116 provided on the first side plate 32112. The first communication connection units 32116 are electrically connected to the first chip module 32113 and also to external devices, enabling the external devices to exchange information with the first chip module 32113. The first communication connection units 32116 can be connected to other modules in the control device 3 so as to exchange information with the first chip module 32113. Optionally, the first communication connection units 32116 include, but are not limited to, a USB communication interface, an Ethernet interface, a power supply / communication interface for a battery management unit, a multi-machine synchronization interface, a standard serial port, and a general-purpose interface bus.

[0115] In one embodiment, the first sub-control module 3211 further includes a first radio unit 32117 provided on the first side plate 32112. The first radio unit 32117 is electrically connected to the first chip module 32113 and used to transmit or receive electromagnetic wave information, thereby improving the efficiency and reliability of information transmission or reception by the control device 3. In one embodiment, the first radio unit 32117 can transmit information after it has been processed by the first chip module 32113, and can also receive information and transmit it to the first chip module 32113.

[0116] In one embodiment, the first sub-control module 3211 further includes a first display unit 32118 provided on the first side plate 32112. The first display unit 32118 is electrically connected to the first chip module 32113. The first display unit 32118 is used to display information such as the residual charge of the battery cells connected to the control device 3 and alarm information. In one embodiment, the first display unit 32118 can be used to display relevant information of the first chip module 32113. In some embodiments, the first display unit 32118 includes a SOC indicator lamp 32118a for displaying the residual charge of the battery cells connected to the control device 3. In some embodiments, the first display unit 32118 includes a warning lamp 32118b. After the first chip module 32113 receives abnormal information such as a short circuit or high temperature, the warning lamp 32118b flashes to alert the worker.

[0117] In one embodiment, the first sub-control module 3211 further includes a first plug unit 32119 provided on the first substrate 32111. The first plug unit 32119 is inserted into a first relay member 3402 in a relay unit 340, so that the first sub-control module 3211 can be electrically connected to the first control module 321, the second sub-control module 3212, the third sub-control module 3213, and the fourth sub-control module 3214 via the relay unit 340.

[0118] In one embodiment, the control device 3 further includes a first guide rail 371 disposed within the first housing 31 so as to extend along a second direction Y. The first guide rail 371 corresponds to a first substrate 32111. The first substrate 32111 cooperates with the first guide rail 371 to move relative to the first housing 31 along the first guide rail 371 so that a first sub-control module 3211 moves relative to the first housing 31.

[0119] In one embodiment, the first side plate 32112 is detachably connected to the first guide rail 371. After disconnecting the first side plate 32112 from the first guide rail 371, the first sub-control module 3211 can be pulled out from the first recess 310 by pulling the first side plate 32112.

[0120] Optionally, there are two first guide rails 371. The two first guide rails 371 are arranged opposite each other along the third direction X, with one mounted on the third wall 313 and the other between the third wall 313 and the fourth wall 314. Providing two first guide rails 371 enhances the stability of the first sub-control module 3211 as it moves relative to the first housing 31. Optionally, the first side plate 32112 and the two first guide rails 371 are detachably connected by screws.

[0121] In one embodiment, the second sub-control module 3212 further includes a second substrate 32121 connected to the second side plate 32122. The second substrate 32121 slides relative to the first housing 31 along the second direction Y. This allows the second side plate 32122 to move the second sub-control module 3212 out of the first housing 31, enabling maintenance of the second sub-control module 3212.

[0122] In one embodiment, the second sub-control module 3212 includes a second chip module 32123 provided on the second substrate 32121. The second chip module 32123 is electrically connected to each component in the second sub-control module 3212 and performs corresponding control over these components.

[0123] In one embodiment, the second sub-control module 3212 further includes a second power supply module 32124 provided on the second substrate 32121. The second power supply module 32124 is electrically connected to the second chip module 32123 and can also be electrically connected to other components other than the second chip module 32123, such as memory. The second power supply module 32124 can supply power to other components in the second sub-control module 3212.

[0124] In one embodiment, the second sub-control module 3212 further includes a plurality of second communication connection units 32126 provided on the second side plate 32122. The second communication connection units 32126 are electrically connected to the second chip module 32123 so that external devices can exchange information with the second chip module 32123. The second communication connection units 32126 are also connected to other modules in the control device 3 so that these modules can exchange information with the second chip module 32123. Optionally, the second communication connection units 32126 are used to transmit information processed by the second chip module 32123 to external devices and to transmit information from external devices to the second chip module 32123. Optionally, the second communication connection units 32126 include, but are not limited to, a USB communication interface, a power supply / communication interface for a battery management unit, a multi-machine synchronization interface, a standard serial port, and a general-purpose interface bus.

[0125] In one embodiment, the second sub-control module 3212 further includes a memory connection unit 32127 provided on the second side plate 32122. The memory connection unit 32127 is electrically connected to the second chip module 32123 and can be used to insert a memory card for information transmission with the second chip module 32123. In one embodiment, the memory connection unit 32127 transmits information on the memory card to the second chip module 32123 and transmits information processed by the second chip module 32123 to the memory card. Optionally, the memory connection unit 32127 includes an SD card connector.

[0126] In one embodiment, the second sub-control module 3212 further includes a second plug unit 32128 provided on the second substrate 32121. The second plug unit 32128 is insertable into a second relay member 3403 in the relay unit 340 so that the second sub-control module 3212 can be electrically connected to the first control module 321, the first sub-control module 3211, the third sub-control module 3213, and the fourth sub-control module 3214 via the relay unit 340.

[0127] In one embodiment, the control device 3 further comprises a second guide rail 372 that extends along a second direction Y and corresponds to a second substrate 32121. The second substrate 32121 cooperates with the second guide rail 372 and moves along the second guide rail 372 relative to the first housing 31, thereby moving the second sub-control module 3212 relative to the first housing 31.

[0128] In one embodiment, the second side plate 32122 is detachably connected to the second guide rail 372. After disconnecting the second side plate 32122 from the second guide rail 372, the second sub-control module 3212 can be pulled out from the first recess 310 by pulling the second side plate 32122.

[0129] Optionally, there are two second guide rails 372. The two second guide rails 372 are positioned opposite each other along the third direction X, with one mounted on the third wall 313 and the other between the third wall 313 and the fourth wall 314. Providing two second guide rails 372 enhances the stability of the second sub-control module 3212 as it moves relative to the first housing 31. Optionally, the second side plate 32122 and the two second guide rails 372 are detachably connected by screws.

[0130] In one embodiment, the third sub-control module 3213 further includes a third substrate 32131 connected to a third side plate 32132. The third substrate 32131 is slidable along a second direction Y relative to the first housing 31. This allows the third side plate 32132 to remove the third sub-control module 3213 from the first housing 31, enabling maintenance of the third sub-control module 3213.

[0131] In one embodiment, the third sub-control module 3213 includes a third chip module 32133 provided on the third substrate 32131. The third chip module 32133 is electrically connected to each component in the third sub-control module 3213 and performs corresponding control over these components.

[0132] In one embodiment, the third sub-control module 3213 further includes a third power supply module 32134 provided on the third substrate 32131. The third power supply module 32134 is electrically connected to the third chip module 32133 and is also electrically connectable to other components besides the third chip module 32133. The third power supply module 32134 can supply power to other components in the third sub-control module 3213.

[0133] In one embodiment, the third sub-control module 3213 further includes a voltage control unit 32135 provided on the third substrate 32131. The voltage control unit 32135 is electrically connected to an external battery cell of the control device 3 and can be used to control the voltage input to the battery cell and the voltage output by the battery cell.

[0134] In one embodiment, the third sub-control module 3213 further includes a third plug unit 32136 provided on the third substrate 32131. The third plug unit 32136 is electrically connected to the voltage control unit 32135. Optionally, the third plug unit 32136 faces in the opposite direction to the third side plate 32132. Optionally, the third plug unit 32136 is insertable into the relay unit 340 so that the third sub-control module 3213 can be electrically connected to the first control module 321, the first sub-control module 3211, the second sub-control module 3212, and the fourth sub-control module 3214 via the relay unit 340.

[0135] In one embodiment, the third sub-control module 3213 further includes a photoelectric coupling unit 32138 provided on the third substrate 32131 and electrically connected to the third chip module 32133. The photoelectric coupling unit 32138 is used to transmit and receive photoelectric signals and has good electrical insulation and interference resistance.

[0136] In one embodiment, the third sub-control module 3213 further includes a first filter unit 32137 provided on the third substrate 32131 and electrically connected to the third chip module 32133. The first filter unit 32137 is used to remove electromagnetic radiation contamination within the control device 3 and to reduce the impact on each component, such as reducing the impact of electromagnetic radiation on the photoelectric coupling unit 32138 and the first radio unit 32117. Optionally, the first filter unit 32137 includes a common-mode inductance that can be used to remove common-mode interference.

[0137] In one embodiment, the control device 3 extends along the second direction Y and is connected to the third substrate. 32131 The third board 32131 is further provided with a corresponding third guide rail 373. The third board 32131 cooperates with the third guide rail 373 and moves along the third guide rail 373 relative to the first housing 31, thereby moving the third sub-control module 3213 relative to the first housing 31.

[0138] In one embodiment, the third side plate 32132 is detachably connected to the third guide rail 373. After disconnecting the third side plate 32132 from the third guide rail 373, the third sub-control module 3213 can be pulled out from the first recess 310 by pulling the third side plate 32132.

[0139] Optionally, there are two third guide rails 373, which are positioned opposite each other along the third direction X, with one mounted on the fourth wall 314 and the other between the third wall 313 and the fourth wall 314. Providing two third guide rails 373 enhances the stability of the third sub-control module 3213 as it moves relative to the first housing 31. Optionally, the third side plate 32132 and the two third guide rails 373 are detachably connected by screws.

[0140] In one embodiment, the fourth sub-control module 3214 further includes a fourth substrate 32141 connected to a fourth side plate 32142. The fourth substrate 32141 is slidable along the second direction Y relative to the first housing 31. This allows the fourth side plate 32142 to remove the fourth sub-control module 3214 from the first housing 31, enabling maintenance of the fourth sub-control module 3214.

[0141] In one embodiment, the fourth sub-control module 3214 includes a fourth chip module 32143 provided on the fourth substrate 32141. The fourth chip module 32143 is electrically connected to each component in the fourth sub-control module 3214 and performs corresponding control over these components.

[0142] In one embodiment, the fourth sub-control module 3214 further includes a fourth power supply module 32144 provided on the fourth substrate 32141. The fourth power supply module 32144 is electrically connected to the fourth chip module 32143 and is also electrically connectable to other components other than the fourth chip module 32143. The fourth power supply module 32144 can supply power to other components in the fourth sub-control module 3214.

[0143] In one embodiment, the fourth sub-control module 3214 further includes a wireless communication module 32145 provided on the fourth substrate 32141 and electrically connected to the fourth chip module 32143. The wireless communication module 32145 can be used to transmit or receive radio frequency signals and improve the convenience of communication. In one embodiment, the wireless communication module 32145 can be used to wirelessly transmit information processed by the fourth chip module 32143 and to transmit received information to the fourth chip module 32143. Optionally, the wireless communication module 32145 includes a radio frequency chip.

[0144] In one embodiment, the fourth sub-control module 3214 further includes a plurality of detection connection units 32146 provided on the fourth side plate 32142. The plurality of detection connection units 32146 are electrically connected to a plurality of sensors in the control device 3 and are also connected to an external detection device so that the detection device can detect the corresponding sensors.

[0145] In one embodiment, the control device 3 further comprises a fourth guide rail 374 that extends along a second direction Y and corresponds to a fourth substrate 32141. The fourth substrate 32141 cooperates with the fourth guide rail 374 and moves along the fourth guide rail 374 relative to the first housing 31, thereby moving the fourth sub-control module 3214 relative to the first housing 31.

[0146] In one embodiment, the fourth side plate 32142 is detachably connected to the fourth guide rail 374. After disconnecting the fourth side plate 32142 from the fourth guide rail 374, the fourth sub-control module 3214 can be pulled out from the first recess 310 by pulling the fourth side plate 32142.

[0147] Optionally, there are two fourth guide rails 374. The two fourth guide rails 374 are positioned opposite each other along the third direction X, with one mounted on the fourth wall 314 and the other between the third wall 313 and the fourth wall 314. Providing two fourth guide rails 374 increases the stability of the fourth sub-control module 3214 as it moves relative to the first housing 31. Optionally, the fourth side plate 32142 and the two fourth guide rails 374 are detachably connected by screws.

[0148] As shown in Figures 2 and 17, in one embodiment, the second control module 322 further has a fifth substrate 3221 connected to the fifth side plate 3222. The fifth substrate 3221 is slidable along the second direction Y relative to the first housing 31. In this way, the fifth side plate 3222 moves the second control module 322 out of the first housing 31, enabling maintenance of the second control module 322.

[0149] In one embodiment, the second control module 322 includes a DC power supply module 3223. The DC power supply module 3223 is provided on the fifth substrate 3221 and converts alternating current to direct current, supplying a constant current to the elements in the control device 3.

[0150] In one embodiment, the second control module 322 further includes a second filter unit 3224 provided on the fifth substrate 3221. The second filter unit 3224 is used to remove electromagnetic radiation contamination within the control device 3 and to reduce the effects of electromagnetic radiation on each component. Optionally, the second filter unit 3224 includes a filter.

[0151] In one embodiment, the second control module 322 further includes a third communication connection unit 3225 provided on the fifth substrate 3221. The third communication connection unit 3225 connects to an external device so that the external device can exchange information with the second control module 322. As shown in Figure 8, the third communication connection unit 3225 protrudes from the first wall 311 along the fourth direction Y', facilitating connection to the external device via lead wires.

[0152] In one embodiment, the control device 3 further comprises a fifth guide rail 375 that extends along a second direction Y and corresponds to a fifth substrate 3221. The fifth substrate 3221 cooperates with the fifth guide rail 375 to move along the fifth guide rail 375 relative to the first housing 31, thereby moving the second control module 322 relative to the first housing 31.

[0153] In one embodiment, the fifth side plate 3222 is detachably connected to the fifth guide rail 375. After disconnecting the fifth side plate 3222 from the fifth guide rail 375, the second control module 322 can be pulled out from the first recess 310 by pulling the fifth side plate 3222.

[0154] Optionally, there are two fifth guide rails 375, which are positioned opposite each other along the third direction X. Providing two fifth guide rails 375 enhances the stability of the second control module 322 as it moves relative to the first housing 31. Optionally, the fifth side plate 3222 and the two fifth guide rails 375 are detachably connected by screws.

[0155] As shown in Figure 2, in one embodiment, the relay unit 340 is provided along the second direction Y, on the side opposite to the first wall 311 of the first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, the fourth sub-control module 3214, and the second control module 322.

[0156] When the first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, the fourth sub-control module 3214, and the second control module 322 are located within the first recess 310, the first sub-control module 3211, the second sub-control module 3212, the third sub-control module 3213, the fourth sub-control module 3214, and the second control module 322 are all electrically connected to the relay unit 340 by being in contact with it.

[0157] After the connection between the third plate 353 and the fourth plate 354 is released, the third plate 353 can be removed, allowing the first side plate 32112, the second side plate 32122, the third side plate 32132, and the fourth side plate 32142 to be operated.

[0158] After the connection between the first side plate 32112 and the first plate 3112 is released, the connection between the first sub-control module 3211 and the relay unit 340 is released by pulling out the first side plate 32112, allowing the first sub-control module 3211 to be removed from inside the first housing 31 and easily maintained.

[0159] After the connection between the second side plate 32122 and the first plate 3112 is released, the connection between the second sub-control module 3212 and the relay unit 340 is released by pulling out the second side plate 32122, allowing the second sub-control module 3212 to be removed from inside the first housing 31 and easily maintained.

[0160] After the connection between the third side plate 32132 and the first plate 3112 is released, the connection between the third sub-control module 3213 and the relay unit 340 is released by pulling out the third side plate 32132, allowing the third sub-control module 3213 to be removed from inside the first housing 31 for easy maintenance.

[0161] After the connection between the fourth side plate 32142 and the first plate 3112 is released, the connection between the fourth sub-control module 3214 and the relay unit 340 is released by pulling out the fourth side plate 32142, allowing the fourth sub-control module 3214 to be removed from inside the first housing 31 for easy maintenance.

[0162] After the connection between the fourth plate 354 and the second plate 352 is released, the fourth plate 354 can be removed and the fifth side plate 3222 can be operated.

[0163] After the connection between the fifth side plate 3222 and the first plate 3112 is released, the connection between the second control module 322 and the relay unit 340 is released by pulling out the fifth side plate 3222, allowing the second control module 322 to be removed from inside the first housing 31 and easily maintained.

[0164] As shown in Figures 18 and 19, an embodiment of the present invention further provides a battery module 100 comprising a second housing 1, a plurality of battery cells 2, and a control device 3 as described in any of the above embodiments, wherein the control device 3 and the plurality of battery cells are provided inside the second housing 1, and the plurality of battery cells 2 are electrically connected to the control device 3.

[0165] The second housing 1 has a plurality of cavity units 11. The control device 3 and the plurality of battery cells 2 are each housed in a different cavity unit 11. In one embodiment, the plurality of cavity units 11 are arranged in an array along the first direction Z and the third direction X.

[0166] In one embodiment, multiple battery cells 2 and a control device 3 are arranged in a stacked manner along a first direction Z.

[0167] In one embodiment, the control device 3 is located between two adjacent battery cells 2 along the first direction Z.

[0168] In one embodiment, the control device 3 is provided at the end of a stack of battery cells 2 along the first direction Z.

[0169] In one embodiment, the battery module 100 further includes a sixth lead wire 56 and a seventh lead wire 57 that can be used to electrically connect the control device 3 and the battery cell 2.

[0170] In one embodiment, the battery module 100 further includes an eighth lead wire 58 for electrically connecting different battery cells 2. In one embodiment, the eighth lead wire 58 is positioned between adjacent cavity units 11, enabling concealed routing, which is advantageous for improving cleanliness and increasing the utilization rate of space inside the second housing 1.

[0171] In one embodiment, the battery module 100 further includes a converter 4 and a ninth lead wire (not shown). The converter 4 is electrically connected to the control device 3 via the ninth lead wire.

[0172] In one embodiment, the ninth lead wire is positioned between adjacent cavity units 11, enabling concealed routing, which is advantageous for improving cleanliness and increasing the utilization rate of space inside the second housing 1.

[0173] Along the third direction X, the length of the control device 3 is denoted as the first distance d1, and the length of the battery cell 2 as the second distance d2, where dd1 and d2 are equal. This allows the control device 3 and the battery cell 2 to be interchangeable within a cavity unit 11, increasing the space utilization rate inside the second housing 1 and allowing for a greater degree of integration of the battery module 100. In this specification, the term “equal” is used to describe an ideal state between two numerical values. In actual manufacturing or operating conditions, two values ​​being equal includes the case where the difference between the two values ​​is 0 ± 10%.

[0174] As shown in Figures 19, 20, and 21, the length of the control device 3 is defined as the third distance d3 and the length of the battery cell 2 as the fourth distance d4 along the second direction Y, with d3 and d4 being equal. This ensures that the depth of the cavity unit 11 along the second direction Y is sufficient to accommodate both the control device 3 and the battery cell 2, thereby increasing the space utilization rate inside the second housing 1 and allowing for a higher degree of integration of the battery module 100.

[0175] The battery cell 2 includes a battery case 21, an electrode assembly (not shown) provided inside the battery case 21, a first terminal 22, and a second terminal 23. The first terminal 22 and the second terminal 23 are electrically connected to the electrode assembly and protrude from the battery case 21.

[0176] In one embodiment, the first terminal 22 and the second terminal 23 are provided on the same side of the electrode assembly. In other embodiments, the first terminal 22 may be provided on one side of the electrode assembly, and the second terminal 23 may be provided on the other side (not shown) of the electrode assembly.

[0177] Next, we will further explain using the case where the first terminal 22 and the second terminal 23 are provided on the same side of the electrode assembly as an example.

[0178] Refer to Figures 3, 18, 19, 20, and 21 as well. In one embodiment, the third opening 361, fourth opening 362, fifth opening 363, and sixth opening 364 of the control device 3 can be used to pass the sixth lead wire 56 and / or the seventh lead wire 57.

[0179] In one embodiment, when multiple battery cells 2 and control devices 3 are stacked and installed along a first direction Z, the first terminal 22 and the second terminal 23 are closer to the first wall 311 than to the second wall 312. In this way, since the first terminal 22, the second terminal 23 and the first control module 321 are all provided close to the first wall 311, it is easier to arrange the lead wires, and the lead wires are connected to the first control module 321 via the first wall 311, thereby increasing the efficiency of space utilization.

[0180] Multiple battery cells 2 are connected in series and / or parallel and then electrically connected to the control device 3. In one embodiment, after being connected in series and / or parallel, the multiple battery cells 2 form a total positive terminal 24 and a total negative terminal 25. Optionally, the total positive terminal 24 is electrically connected to a second connecting member 344 via a sixth lead wire 56. The total negative terminal 25 is electrically connected to a third connecting member 345 via a seventh lead wire 57.

[0181] Furthermore, those skilled in the art may make other modifications within the spirit of this application. Of course, any modifications made in accordance with the spirit of this application should fall within the scope disclosed herein. [Explanation of Symbols]

[0182] Battery module 100 Second Shell 1 Cavity Unit 11 Battery cell 2 Battery case 21 1st terminal 22 2nd terminal 23 Total positive connection terminal 24 General negative connection terminal 25 Control device 3 Shell 31 (1st shell) First recess 310 1st wall 311 First opening 3111 Plate 1, 3112 1st page 3113 2nd wall 312 3rd wall 313 4th wall 314 Bottom wall 315 Top wall 316 Gap 317 First control module 321 First sub-control module 3211 First substrate 32111 1st side plate 32112 First chip module 32113 First power module 32114 First communication connection unit 32116 Radio Unit 1, 32117 First display unit 32118 SOC indicator lamp 32118a Warning light 32118b First plug unit 32119 Second sub-control module 3212 Second board 32121 2nd side plate 32122 Second chip module 32123 Second power supply module 32124 Second communication connection unit 32126 Memory connection unit 32127 Second plug unit 32128 Third sub-control module 3213 Third board 32131 3rd side plate 32132 Third chip module 32133 Third power supply module 32134 Voltage control unit 32135 Third plug unit 32136 First filter unit 32137 Photoelectric coupling unit 32138 4th sub-control module 3214 4th board 32141 4th side plate 32142 Fourth chip module 32143 Fourth power supply module 32144 Wireless communication module 32145 Detection and connection unit 32146 Second control module 322 Fifth substrate 3221 5th side plate 3222 DC power supply module 3223 Second filter unit 3224 Third communication connection unit 3225 First conductive path 331 First part 331a Second part 331b First cutting member 3311a Second cutting member 3311b Second conductive path 332 Third part 332a Fourth part 332b Third cutting member 3321a Fourth cutting member 3321b First control unit 3341 Second control unit 3342 Switch 1 341 First control member 342 Operation unit 3421 First connecting member 343 Second connecting member 344 Third connecting member 345 Fourth connecting member 346 Fifth connecting member 347 Relay unit 340 Relay board 3401 First relay member 3402 Second relay member 3403 Third relay member 3404 Panel 35 Second opening 351 Plate 2, 352 Plate 353 Plate 4, No. 354 2nd side 355 Third opening 361 Fourth opening 362 Fifth opening 363 6th opening 364 Second control member 348 Third control member 349 First guide rail 371 Second guide rail 372 Third guide rail 373 4th guide rail 374 Fifth guide rail 375 Ventilation component 38 Temperature sensor 391 Converter 4 First lead wire 51 Second lead wire 52 Third lead wire 53 Lead wire 54 (4th lead wire) Fifth lead wire 7 Lead wire 56 (6th lead wire) Lead wire 57 (7th lead wire) Lead wire #8 58 1st direction Z Second direction Y 3rd direction Fourth direction Y'

Claims

1. A control device comprising a first housing, a first control module, a first conductive path, a second conductive path, a first switch, and a first control member, The first housing has a first recess and includes a first wall, a second wall and a bottom wall, the first wall is provided opposite the second wall, the bottom wall connects the first wall and the second wall, and the first wall, the second wall and the bottom wall constitute the inner wall of a part of the first recess. The first control module is provided in the first recess, When the control device is observed along a first direction perpendicular to the bottom wall, the first control module is provided between the first wall and the second wall, Compared to the second wall, the first control module is closer to the first wall. The first control module performs corresponding control according to the state of the battery electrically connected to the first control module. The first conductive path is provided within the first recess so as to extend along a second direction perpendicular to the first direction, the first conductive path is in contact with the first wall, and the first wall and the second wall face each other in the second direction. The second conductive path is provided in the first recess so as to extend along the second direction, the second conductive path is in contact with the first wall, and the second conductive path and the first conductive path are spaced apart from each other. The first switch is provided in the first recess, The first switch is in contact with the first conductive path and the second conductive path and electrically connects the first conductive path and the second conductive path. When the control device is observed along the first direction, the first switch and the first control module are spaced apart from each other. The first control member is provided on the outside of the first housing, The first control member and the first wall are provided facing each other in the second direction. The first control member is connected to the first switch and controls the on and off states of the first switch. The first wall has a first opening, The first opening communicates with the first recess, The first switch enters a first state and a second state. When the first switch is in the first state, and observed along the second direction, the first control member has a portion that overlaps with the first opening. A control device characterized in that, when the first switch is in the second state, the first control member and the first opening are spaced apart from each other when observed along the second direction.

2. The control device according to claim 1, characterized in that, when observed along the first direction, the first control module has a portion that overlaps with the first conductive path.

3. The control device according to claim 1, characterized in that, when the control device is observed along the first direction, the first control module and the first conductive path are spaced apart from each other.

4. The control device according to claim 1, further comprising a second control module, wherein the second control module is provided between the first control module and the first conductive path along the first direction.

5. The control device according to claim 4, characterized in that the second control module is used to perform a corresponding conversion to power input from an external source, and the second control module is electrically connected to the first control module.

6. The first control module includes a first sub-control module, a second sub-control module, and a third sub-control module. The first sub-control module performs corresponding control according to the state of the battery electrically connected to the first sub-control module. The second sub-control module performs corresponding control according to the state of the sensor electrically connected to the second sub-control module. The control device according to claim 1, characterized in that the third sub-control module monitors the resistance value in the first housing and performs insulation monitoring.

7. The control device according to claim 1, characterized in that the gas inside the first recess can be exchanged with the gas outside the first housing through the first opening.

8. The first state is a state in which the electrical connection between the first switch and the first conductive path, and the electrical connection between the first switch and the second conductive path are disconnected. The control device according to claim 1, characterized in that the second state is a state in which an electrical connection is established between the first switch and the first conductive path, and an electrical connection is established between the first switch and the second conductive path.

9. The control device according to claim 1, characterized in that the first conductive path comprises a first cutting member that can cut the connection passage of the first conductive path when the current flowing through the first conductive path reaches a first threshold, and a second cutting member that can cut the connection passage of the first conductive path when the current flowing through the first conductive path reaches a second threshold.

10. The control device according to claim 1, wherein the second conductive path comprises a third cutting member that can cut the connection passage of the second conductive path when the current flowing through the second conductive path reaches a third threshold, and a fourth cutting member that can cut the connection passage of the second conductive path when the current flowing through the second conductive path reaches a fourth threshold.

11. It is a battery module, The second cabinet and A control device according to any one of claims 1 to 10, provided within the second housing, The device comprises a plurality of battery cells provided within the second housing and connected to the control device, A battery module characterized in that the plurality of battery cells and the control device are stacked along the first direction.

12. The battery cell includes an electrode assembly, a first terminal, and a second terminal. The first terminal and the second terminal are provided on the same side of the electrode assembly and are electrically connected to the electrode assembly. The battery module according to claim 11, characterized in that, in the second direction, the first terminal and the second terminal are closer to the first wall than the second wall.

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