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] The present application relates to the technical field of high voltage boxes, and in particular to control devices and battery modules. [Background technology]

[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 it has shown certain economic viability in some fields.

[0003] At present, the development of energy storage technology in the world is mainly focused on the field of electrochemical storage, and in particular, lithium-ion batteries are widely used as a highly efficient, clean and highly recyclable energy source. The high-voltage distribution box is an important part of the energy storage system, but the traditional high-voltage box has disadvantages such as low space utilization rate, no outstanding modular design, poor maintenance and compatibility. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this situation, there is a need to provide a control device with a modular design that improves space utilization of the high-pressure box and improves maintainability. [Means for solving the problem]

[0005] A control device according to one embodiment 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 opposite each other. The bottom wall connects the first wall and the second wall. The first wall, the second wall, and the bottom wall form a part of an inner wall of the first recess. The first control module is provided in 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 the distance from the second wall. The first control module performs corresponding control depending on the state of a battery electrically connected thereto. 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 face each other in the second direction. The second conductive path is provided in the first recess so as to extend in the second direction. The second conductive path is in contact with the first wall and is spaced apart from the first conductive path. The first switch is provided in the first recess and in contact with the first conductive path and the second conductive path to electrically connect 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 outside the first shell and opposed to the first wall in the second direction. The first control member is connected to the first switch and can control the on / off of the first switch. The control device adopts a modular design, so that each module is compactly laid out and space utilization is improved.

[0006] In some embodiments of the present disclosure, when the control device is viewed along the first direction, the first control module has an overlapping portion with the first conductive path.

[0007] In some embodiments of the present disclosure, when the control device is viewed 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, the second control module being disposed 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 corresponding conversion on the power input from the outside.

[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 in response to a state of a battery electrically connected thereto; The second sub-control module performs corresponding control in response to a state of a sensor electrically connected thereto; The third sub-control module performs insulation monitoring by monitoring a 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 exchangeable 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 gas in the first recess and 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, the first control member has a portion that overlaps with the first opening when observed along the second direction, When the first switch is in the second state, the first control member and the first opening are spaced apart from each other when viewed along the second direction.

[0015] In some embodiments of the present disclosure, the first state refers to 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 being interrupted; The second state indicates that 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 are established.

[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 capable of cutting a connection path of the first conductive path when a current flowing through the first conductive path reaches a first threshold, and a second cutting member capable of cutting a connection path of the first conductive path when a 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 disconnecting member includes a fuse, and the second disconnecting member includes a fuse; and (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 capable of cutting the connection path of the second conductive path when the current flowing through the second conductive path reaches a third threshold, and a fourth cutting member capable of cutting the connection path 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 disconnecting member includes a fuse, and the fourth disconnecting member includes a fuse; and (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 in the first direction.

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

[0023] In some embodiments of the present disclosure, the battery module further includes a lead wire, the lead wire electrically connecting 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, a length of the control device is a third distance and a length of the battery cell is a fourth distance, the third distance being equal to the fourth distance.

[0027] As a result, the control device of the present application adopts a modular design to improve space utilization. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a first schematic diagram of a control device according to an embodiment of the present application. [Diagram 2] FIG. 2 is a schematic diagram of an exploded state of FIG. [Diagram 3] FIG. 1 is a first schematic diagram illustrating an internal structure of a control device according to an embodiment of the present application after a ceiling wall is removed. [Figure 4] FIG. 2 is a second schematic diagram showing the internal structure of the control device according to the embodiment of the present application after the ceiling wall is removed. [Diagram 5] FIG. 2 is a structural schematic diagram of a relay unit in an embodiment of the present application. [Figure 6] FIG. 2 is a configuration diagram of a control device when a first switch is in a first state in an embodiment of the present application. [Figure 7] FIG. 2 is a configuration diagram of a control device when a first switch is in a second state in an embodiment of the present application. [Figure 8] FIG. 2 is a schematic diagram of a partial structure of a control device when a first switch is in a second state and a panel is removed in an embodiment of the present application. [Figure 9] FIG. 2 is a block diagram of a control device when a first switch is in a first state and a panel is removed in one embodiment of the present application. [Figure 10] FIG. 2 is a configuration diagram of a control device when a first switch is in a first state in an embodiment of the present application. [Figure 11] FIG. 2 is a second schematic diagram of a control device according to an embodiment of the present application. [Figure 12] FIG. 12 is a cross-sectional view taken along line A-A in FIG. [Figure 13] FIG. 2 is a structural schematic diagram of a first sub-control module in an embodiment of the present application. [Figure 14] FIG. 2 is a structural schematic diagram of a second sub-control module in an embodiment of the present application. [Figure 15] FIG. 2 is a structural schematic diagram of a third sub-control module in an embodiment of the present application. [Figure 16] FIG. 11 is a structural schematic diagram of a fourth sub-control module in an embodiment of the present application. [Figure 17] FIG. 2 is a configuration diagram of a second control module according to an embodiment of the present application. [Figure 18] FIG. 1 is a first schematic diagram of a battery module according to an embodiment of the present application. [Figure 19] FIG. 2 is a second schematic diagram of a battery module in an embodiment of the present application. [Figure 20] FIG. 4 is a third schematic diagram of a control device according to an embodiment of the present application. [Figure 21] 4 is a structural schematic diagram of a battery cell in one embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be further described with reference to the above drawings for the following specific embodiments. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, technical aspects of the embodiments of the present application will be described with reference to the drawings of the embodiments of the present application. However, obviously, the described embodiments are only some examples of the present application, and not all examples.

[0030] It should be noted that when a component is described as being "connected" to another component, it may be directly connected to the other component or there may be intervening components present at the same time, and when a component is described as being "mounted" on another component, it may be directly mounted on the other component or there may be intervening components present at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by a person skilled in the art of the present application. Terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the present application. For example, the term "vertical" is used herein to describe an ideal state between two parts. In an actual manufacturing or use state, there may be a nearly perpendicular state between two parts. For example, when described in relation to numerical values, "vertical" may refer to an angle range between two straight lines of 90±10°, an angle range between two planes of 90±10°, or an angle range between a straight line and a plane of 90±10°. Two parts described as "vertical" may not be absolute straight lines or planes, but may be approximately straight lines or planes. Macroscopically, a part can be considered as a "straight line" or a "plane" if the overall extension direction is a straight line or plane.

[0033] A control device according to an 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 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 a part of an inner wall 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 corresponding control according 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 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 being in contact with the first wall, and the second conductive path being spaced apart from the first conductive path. The first switch is provided in the first recess and in contact with the first conductive path and the second conductive path to electrically connect 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 opposite each other along the second direction. The first control member is connected to the first switch and can control the on / off of the first switch. Since the control device adopts a modular design, each module is laid out compactly, and space utilization is improved.

[0034] Hereinafter, the embodiments of the present invention will be further described with reference to the drawings.

[0035] 1, 2, 3, and 4, an embodiment of the present application provides a control device 3 electrically connected to a battery cell to control 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 provided in the first recess 310.

[0037] The first housing 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 disposed to face each other along a second direction Y. The third wall 313 and the fourth wall 314 are disposed to face each other along a third direction X 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 disposed to face each other along a first direction Z perpendicular to the second direction Y and the third direction X, and are all 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 to form the first recess 310. Here, the first direction Z is perpendicular to the bottom wall 315. In one embodiment, the first wall 311 has a first surface 3113 located on a side away from the first recess 310.

[0038] The orientation terms "top" and "bottom" used in this specification are used only for auxiliary explanation to facilitate understanding of the present application in conjunction with the accompanying drawings, and are not intended to limit the present application. As an example, the bottom wall 315 is the bottom and the top wall 316 is the top, as an example, will be further described below.

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

[0040] When observed along the first direction Z, the first control module 321 is located between the first wall 311 and the second wall 312. The first control module 321 is closer to the first wall 311 than the second wall 312. When observed 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 the distance from the top wall 316. The first control module 321 is closer to the first wall 311 than the second wall 312 in the second direction Y. By arranging the first control module 321 close to the first wall 311, it is easy to arrange the lead wires, and the lead wires can be connected to the first control module 321 through the first wall 311, thereby improving 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 charging and discharging of the battery cell 2 based on information of the voltage and temperature of the battery cell. In one embodiment, the first sub-control module 3211 includes a Battery Computer Unit (BCU) module that can be used to collect information of the voltage and temperature of the battery cell.

[0043] The second sub-control module 3212 is electrically connected to the sensor of the battery cell, and can perform corresponding control on the battery cell based on the information of the sensor. 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 information on the voltage and current in the control device 3, and performs insulation monitoring to monitor whether there is a short circuit problem in the control device 3, thereby improving the safety performance of the control device 3. In the present application, the insulation monitoring by the third sub-control module 3213 allows the control device 3 to monitor the resistance between the positive electrode connection member and the negative electrode connection member connected to the battery cell and the first housing 31. If the resistance value is obviously 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 sensation, smoke sensation, curfew, or water ban in the environment in which the control device 3 is located. In one embodiment, the fourth sub-control module 3214 includes an ESU module (abbreviated as Environment Energy Storage Unit, ESU) for monitoring the temperature and humidity of the environment in which the fourth sub-control module 3214 is located.

[0046] In one embodiment, the control device 3 further includes a second control module 322 disposed in the first recess 310. In the first direction Z, the second control module 322 is disposed between the first control module 321 and the first conductive path 331, and can improve the space utilization rate in 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 source and can perform corresponding conversion on the power input from the external power source. For example, the second control module 322 is used to adjust the voltage or current input from the external power source.

[0047] Please refer to Figures 2, 4 and 5 together. In one embodiment, the control device 3 further includes an intermediate unit 340. The intermediate 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 intermediate 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, so as to electrically connect 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 each other, and all of these modules are 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. The third connecting member 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] 1, 2, 3, and 4. When viewed 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 provided between the first switch 341 and the first control module 321. The first switch 341 is closer to the second wall 312 than the distance from the first wall 311. Since the first switch 341 is closer to the second wall 312 and the first control module 321 is closer to the first wall 311, the mutual interference caused by the first switch 341 and the first control module 321 on signal transmission can be reduced, and the rationality of the layout of the modules in the first housing 31 and the space utilization rate can be improved.

[0051] The first control member 342 is provided outside the first housing 31 and opposed to the first wall 311 in the second direction Y. In addition, the first control member 342 is connected to the first switch 341 and can control the on / off of the first switch 341.

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

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

[0054] In one embodiment, the operating portion 3421 is connected to the first connecting member 343 and can rotate the first connecting member 343 so that the first switch 341 is switched 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 disposed to face 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 attached to the portions of the third wall 313 and the fourth wall 314 protruding 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 to the first wall 311.

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

[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 can increase 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 that 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 portion 331a and the second portion 331b are both in contact with the first wall 311 and are also in contact with and electrically connected to the first switch 341. When observed along the first direction Z, the first portion 331a and the second portion 331b are spaced apart from each other 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 in contact with the first switch 341 to be electrically connected thereto. The second conductive path 332 includes a third portion 332a and a fourth portion 332b. The third portion 332a and the fourth portion 332b are both in contact with the first wall 311 and are both in contact with the first switch 341 to be electrically connected thereto. When observed along the first direction Z, the third portion 332a and the fourth portion 332b have an overlapping portion. An end of the third portion 332a in contact with the first wall 311 and an end of the fourth portion 332b 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 spaced apart, the 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 has 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 can improve 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 has a third cutting member 3321a capable of cutting 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 capable of cutting the connection path of the fourth portion 332b when the current flowing through the fourth portion 332b reaches a fourth threshold. This can improve 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 disconnecting member 3321b includes a fuse. In one embodiment, the length of the fourth disconnecting 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 includes a first control unit 3341 disposed in 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 includes a second control unit 3342 provided in the first housing 31 and connected to the fourth portion 332b. The second control unit 3342 can control the opening and closing of the fourth portion 332b. Optionally, the second control unit 3342 includes a relay.

[0071] In one embodiment, the control device 3 further includes a second connection member 344 and a third connection member 345. The second connection member 344 and the third connection 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 contacts and electrically connects with the second connection member 344. The second portion 331b contacts and electrically connects with the third connection member 345. The second connection member 344 and the third connection member 345 are used to electrically connect with the battery cell. In this way, the control device 3 and the battery cell form a closed circuit for controlling the battery cell.

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

[0073] In one embodiment, the control device 3 further includes 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 and electrically connected to the fourth connecting member 346. The fourth portion 332b is in contact with and electrically connected to the fifth connecting member 347. The fourth connecting member 346 and the fifth connecting member 347 are used to connect with an energy storage current transformer (abbreviated as Power Conversion System, PCS), so that the energy storage current transformer 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 realized, and the battery cells can be ensured to operate safely.

[0074] In one embodiment, the leads include a third lead 53. The fourth connection member 346 electrically connects to an energy storage current transformer (not shown) external to the controller 3 via the third lead 53. In one embodiment, the leads include a fourth lead 54. The fifth connection member 347 electrically connects to an energy storage current transformer external to the controller 3 via the fourth lead 54.

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

[0076] In one embodiment, the control device 3 further includes a ventilation member 38. The ventilation member 38 is provided on the first wall 311 and is provided to face 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, and 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, any of a fan and 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 in the control device 3. In one embodiment, the temperature sensor 391 is provided between the first switch 341 and the first control module 321 along the second direction Y, so that the space utilization rate in the first housing 31 can be improved. In one embodiment, the temperature sensor 391 is closer to the first control module 321 and the second control module 322 than 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, and controls the operation and stop of the ventilation member 38 based on the temperature information detected by the temperature sensor 391 so that the temperature of each module in the control device 3 is within a safe range, thereby reducing the unexpected risk of high temperature of the control device 3. In one embodiment, the second sub-control module 3212 is electrically connected to the temperature sensor 391 via a fifth lead wire 7 .

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

[0079] Optionally, the number of the second openings 351 is multiple, and the multiple second openings 351 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, the hole diameter of the second opening 351 may be D2, and D1>D2 may be satisfied. Optionally, 0.5 mm≦D2≦3 mm. This can reduce the risk of external impurities entering the first housing 31 through the second opening 351.

[0080] In one embodiment, the control device 3 further includes 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 are all connected to 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 pass lead wires, which is advantageous for arranging the lead wires, and can also circulate gas to accelerate heat dissipation. The third opening 361 allows the third lead wire 53 and the fourth lead wire 54 to pass through, and the fourth opening 362 allows the first lead wire 51 and the second lead wire 52 to pass through. Alternatively, the fifth opening 363 may allow 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 to pass through.

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

[0082] In one embodiment, the control device 3 further includes a second control member 348 provided in the second control module 322. The panel 35 includes a second surface 355 away from the second wall 312. The second control member 348 extends partially from the second surface 355 along the fourth direction Y'. The second control member 348 is electrically connected to the first switch 341 and can control the on / off of the first switch 341 based on voltage and current information in the control device 3. For example, when a short circuit or overload occurs in the control device 3, the second control member 348 can cut off the closed path 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 includes a third control member 349 disposed 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 is used to interrupt the closed path 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 path between the first switch 341 and the first conductive path 331 and the second conductive path 332 can be immediately interrupted.

[0084] 3, 4, 6 and 7 are also referred to. 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 portion 331a and the second portion 331b are in an off state, and the third portion 332a and the fourth portion 332b are in an off state. When the first switch 341 is in the second state, the first portion 331a and the second portion 331b are in an on state, and the third portion 332a and the fourth portion 332b are in an on state.

[0085] 6, when the first switch 341 is in the first state, when observed along the second direction Y, the operation portion 3421 has a portion overlapping with the second opening 351. Alternatively, when the first switch 341 is in the first state, the longitudinal direction of the operation portion 3421 is parallel to the third direction X.

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

[0087] 8, when the first switch 341 is in the second state, the operation unit 3421 and the first opening 3111 are separated from each other when observed along the second direction Y. In addition, the operation unit 3421 has a portion that overlaps with the first control module 321, and can restrict removal of the first control module 321.

[0088] 2, 8, 9, and 10 are also referred to. The first wall 311 includes a first plate 3112 connecting 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 arranged to face each other along the first direction Z, the third sub-control module 3213 and the fourth sub-control module 3214 are also arranged to face each other along the first direction Z, the first sub-control module 3211 and the third sub-control module 3213 are arranged to face each other along the third direction X, and the second sub-control module 3212 and the fourth sub-control module 3214 are arranged to face 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 the connection between the first side plate 32112 and the first housing 31 is released, the first sub-control module 3211 can be pulled out from within 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 removably 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 the relay unit 340. In one embodiment, after the connection between the second side plate 32122 and the first housing 31 is released, the second side plate 3212 can be pulled out from within 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 removably connected to the first housing 31 by screws.

[0094] In one embodiment, the third sub-control module 3213 has a third side plate 32132, and the third side plate 32132 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 the relay unit 340. In one embodiment, after the connection between the third side plate 32132 and the first housing 31 is released, the third sub-control module 3213 can be pulled out from within the first recess 310 by pulling the third side plate 32132, and the third sub-control module 3213 can be separated from the relay unit 340.

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

[0096] In one embodiment, the fourth sub-control module 3214 has a fourth side plate 32142, and the fourth side plate 32142 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 the relay unit 340. In one embodiment, after the connection between the fourth side plate 32142 and the first housing 31 is released, the fourth sub-control module 3214 can be pulled out from within 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 removably connected to the first housing 31 via screws.

[0098] 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, and 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 disposed adjacent to the second control module 322. This makes it easier to layout the relay unit 340, convenient to connect simultaneously with the relay unit 340, and improves space utilization.

[0099] 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 the relay unit 340. In one embodiment, after the fifth side plate 3222 is disconnected from the first housing 31, the second control module 322 can be pulled out from within 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 removably connected to the first housing 31 via screws.

[0101] In one embodiment, panel 35 includes a second plate 352 and a third plate 353, where third plate 353 is removably connected to second plate 352. In one embodiment, third plate 353 is removably connected to 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 panel 32112, the second side panel 32122, the third side panel 32132 and the fourth side panel 32142 and the projection of the third plate 353. Optionally, the first side panel 32112, the second side panel 32122, the third side panel 32132 and the fourth side panel 32142 are projected within the projection of the third plate 353. When the third plate 353 is removed, the first side panel 32112, the second side panel 32122, the third side panel 32132 and the fourth side panel 32142 can be accessed.

[0103] In one embodiment, the panel 35 further includes a fourth plate 354 disposed between the second plate 352 and the 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 panel 3222 overlaps with the projection of the fourth plate 354. Optionally, the projection of the fifth side panel 3222 lies within the projection of the fourth plate 354. After removing the fourth plate 354, the fifth side panel 3222 can be manipulated.

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

[0106] When the first switch 341 is in the second state, the electrical connections between the first switch 341 and the first conductive path 331 and the second conductive path 332 are in a conductive state. When observed along the second direction Y, the operation portion 3421 has a portion overlapping with the third plate 353. Optionally, when the first switch 341 is in the second state, it is possible to restrict an operator from removing the third plate 353 from the fourth plate 354 and to restrict an operator 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 the operator.

[0107] As shown in FIG. 2, FIG. 9, and FIG. 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 operation part 3421 and the third plate 353 are separated from each other. At this time, if the third plate 353 is removed from the fourth plate 354 and then the first side plate 32112, the second side plate 32122, the third side plate 32132, and the fourth side plate 32142 are operated, safety is high. As an option, 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 wire connected to the first wall 311, which is highly safe.

[0108] Optionally, the 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, a third control member 349 protrudes from the second plate 352 .

[0111] 2, 13, 14, 15 and 16, in one embodiment, the first sub-control module 3211 further includes a first board 32111 connected to a first side plate 32112. The first board 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 enabling maintenance of the first sub-control module 3211.

[0112] In one embodiment, the first sub-control module 3211 includes a first chip module 32113 mounted on a 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 on 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 is electrically connectable to other components, such as a memory, other than the first chip module 32113. 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 includes a plurality of first communication connection units 32116 disposed on the first side panel 32112. The first communication connection units 32116 are electrically connected to the first chip module 32113 and connected to an external device so that the external device can 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 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 of a battery management unit, a multi-machine synchronization interface, a standard serial port, and a general-purpose interface bus.

[0115] In an embodiment, the first sub-control module 3211 further includes a first radio unit 32117 disposed on the first side panel 32112. The first radio unit 32117 is electrically connected to the first chip module 32113 and used to transmit or receive electromagnetic wave information, so as to improve the efficiency and reliability of the transmission or reception of information by the control device 3. In an embodiment, the first radio unit 32117 can transmit information processed by the first chip module 32113, and can receive and transmit information to the first chip module 32113.

[0116] In one embodiment, the first sub-control module 3211 further includes a first display unit 32118 disposed on the first side panel 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 remaining charge of the battery cell 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 an SOC indicator lamp 32118a for displaying the remaining charge of the battery cell 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 short circuit, high temperature, etc., the warning lamp 32118b can flash to alert the operator.

[0117] In one embodiment, the first sub-control module 3211 further includes a first plug unit 32119 provided on the first board 32111. The first plug unit 32119 is inserted into a first relay member 3402 in the relay unit 340, allowing the first sub-control module 3211 to 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 in the first housing 31 to extend along the second direction Y. The first guide rail 371 corresponds to a first substrate 32111. The first substrate 32111 is movable relative to the first housing 31 along the first guide rail 371 in cooperation with the first guide rail 371 such that the 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 the first side plate 32112 is disconnected 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 to face each other along the third direction X, one of which is provided on the third wall 313, and the other of which is provided between the third wall 313 and the fourth wall 314. Providing two first guide rails 371 can improve stability when the first sub-control module 3211 moves relative to the first housing 31. Optionally, the first side plate 32112 and the two first guide rails 371 are each removably connected by a screw.

[0121] In one embodiment, the second sub-control module 3212 further includes a second board 32121 connected to the second side plate 32122. The second board 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 mounted 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 on these components.

[0123] In one embodiment, the second sub-control module 3212 further includes a second power supply module 32124 provided on the second board 32121. The second power supply module 32124 is electrically connected to the second chip module 32123 and can be electrically connected to other components, such as a memory, other than the second chip module 32123. 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 disposed on the second side panel 32122. The second communication connection units 32126 are electrically connected to the second chip module 32123 so that the external device exchanges information with the second chip module 32123. The second communication connection units 32126 also connect to other modules in the control device 3 so that these modules exchange information with the second chip module 32123. Optionally, the second communication connection units 32126 are used to transmit information after being processed by the second chip module 32123 to the external device and transmit information from the external device 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 of a battery management unit, a multi-machine synchronous 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 disposed on the second side panel 32122. The memory connection unit 32127 is electrically connected to the second chip module 32123 and can be used to insert a memory card to transmit information to and from the second chip module 32123. In one embodiment, the memory connection unit 32127 transmits information in 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 board 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 includes a second guide rail 372 extending along the second direction Y and corresponding to the 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 to move the second sub-control module 3212 relative to the first housing 31.

[0128] In one embodiment, the second side plate 32122 is removably connected to the second guide rail 372. After the second side plate 32122 is disconnected from the second guide rail 372, the second sub control module 3212 can be pulled out from within 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 arranged to face each other along the third direction X, one of which is provided on the third wall 313 and the other of which is provided between the third wall 313 and the fourth wall 314. Providing two second guide rails 372 can improve stability when the second sub-control module 3212 moves relative to the first housing 31. Optionally, the second side plate 32122 and the two second guide rails 372 are removably connected to each other by screws.

[0130] In one embodiment, the third sub-control module 3213 further includes a third board 32131 connected to the third side panel 32132. The third board 32131 is slidable along the second direction Y relative to the first housing 31. This allows the third side panel 32132 to move the third sub-control module 3213 out of 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 mounted on the third board 32131. The third chip module 32133 is electrically connected to each component in the third sub-control module 3213, and performs corresponding control on these components.

[0132] In one embodiment, the third sub-control module 3213 further includes a third power supply module 32134 provided on the third board 32131. The third power supply module 32134 is electrically connected to the third chip module 32133 and can be electrically connected to other components other than 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 an embodiment, the third sub-control module 3213 further includes a voltage control unit 32135 disposed on the third board 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 board 32131. The third plug unit 32136 is electrically connected to the voltage control unit 32135. Optionally, the third plug unit 32136 faces away from 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 an embodiment, the third sub-control module 3213 further includes an optoelectronic coupling unit 32138 disposed on the third board 32131 and electrically connected to the third chip module 32133. The optoelectronic coupling unit 32138 is used to transmit and receive optoelectronic signals, and has good electrical insulation and anti-interference properties.

[0136] In an embodiment, the third sub-control module 3213 further includes a first filter unit 32137 disposed on the third board 32131 and electrically connected to the third chip module 32133. The first filter unit 32137 is used to filter out electromagnetic radiation pollution in the control device 3 and reduce the influence of electromagnetic radiation on each component, such as reducing the influence of the 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 filter out common mode interference.

[0137] In one embodiment, the control device 3 further includes a third guide rail 373 extending along the second direction Y and corresponding to the third board. 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 to move 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 the third side plate 32132 is disconnected from the third guide rail 373, the third sub-control module 3213 can be pulled out from within the first recess 310 by pulling the third side plate 32132.

[0139] Optionally, there may be two third guide rails 373, and the two third guide rails 373 are arranged to face each other along the third direction X, with one being provided on the fourth wall 314 and the other being provided between the third wall 313 and the fourth wall 314. Providing two third guide rails 373 can increase the stability when the third sub-control module 3213 moves relative to the first housing 31. Optionally, the third side plate 32132 and the two third guide rails 373 are each removably connected by a screw.

[0140] In one embodiment, the fourth sub-control module 3214 further includes a fourth board 32141 connected to the fourth side plate 32142. The fourth board 32141 is slidable along the second direction Y relative to the first housing 31. This allows the fourth side plate 32142 to move the fourth sub-control module 3214 out of 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 mounted on the fourth board 32141. The fourth chip module 32143 is electrically connected to each component in the fourth sub-control module 3214 and performs corresponding control on these components.

[0142] In one embodiment, the fourth sub-control module 3214 further includes a fourth power supply module 32144 provided on the fourth board 32141. The fourth power supply module 32144 is electrically connected to the fourth chip module 32143 and can be electrically connected 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 disposed on the fourth board 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 to improve communication convenience. In one embodiment, the wireless communication module 32145 can be used to wirelessly transmit information processed by the fourth chip module 32143 and 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 panel 32142. The plurality of detection connection units 32146 are electrically connected to a plurality of sensors in the control device 3, and are connected to an external detection device to detect the corresponding sensors in the detection device.

[0145] In one embodiment, the control device 3 further includes a fourth guide rail 374 extending along the second direction Y and corresponding to the fourth board 32141. The fourth board 32141 cooperates with the fourth guide rail 374 and moves along the fourth guide rail 374 relative to the first housing 31 to move the fourth sub-control module 3214 relative to the first housing 31.

[0146] In one embodiment, the fourth side plate 32142 is removably connected to the fourth guide rail 374. After the connection between the fourth side plate 32142 and the fourth guide rail 374 is released, the fourth sub control module 3214 can be pulled out from within 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 disposed to face each other along the third direction X, one of which is provided on the fourth wall 314, and the other is provided between the third wall 313 and the fourth wall 314. Providing two fourth guide rails 374 can improve stability when the fourth sub-control module 3214 moves relative to the first housing 31. Optionally, the fourth side plate 32142 and the two fourth guide rails 374 are each removably connected by a screw.

[0148] 2 and 17, in one embodiment, the second control module 322 further includes a fifth board 3221 connected to the fifth side plate 3222. The fifth board 3221 is slidable along the second direction Y relative to the first housing 31. In this manner, 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 mounted on the fifth board 3221, converts AC current into DC current, and supplies 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 disposed on the fifth board 3221. The second filter unit 3224 is used to remove electromagnetic radiation contamination in the control device 3 and reduce the influence 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 disposed on the fifth board 3221. The third communication connection unit 3225 connects to an external device so that the external device exchanges information with the second control module 322. As shown in Fig. 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 a lead wire.

[0152] In one embodiment, the control device 3 further includes a fifth guide rail 375 extending along the second direction Y and corresponding to the fifth board 3221. The fifth board 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 removably connected to the fifth guide rail 375. After the fifth side plate 3222 is disconnected from the fifth guide rail 375, the second control module 322 can be pulled out from within the first recess 310 by pulling the fifth side plate 3222.

[0154] Optionally, there may be two fifth guide rails 375, and the two fifth guide rails 375 are arranged to face each other along the third direction X. Providing two fifth guide rails 375 can increase the stability when the second control module 322 moves relative to the first housing 31. Optionally, the fifth side plate 3222 and the two fifth guide rails 375 are removably connected to each other by screws.

[0155] As shown in FIG. 2, in one embodiment, the relay unit 340 is provided along the second direction Y on the side opposite 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 positioned 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 in contact with the relay unit 340 and electrically connected.

[0157] After the third plate 353 and the fourth plate 354 are disconnected, the third plate 353 can be removed to access the first side plate 32112, the second side plate 32122, the third side plate 32132 and the fourth side plate 32142.

[0158] After the connection between the first side panel 32112 and the first plate 3112 is released, the first side panel 32112 can be pulled out to release the connection between the first sub-control module 3211 and the relay unit 340, and the first sub-control module 3211 can be removed from inside the first housing 31 for easy maintenance.

[0159] After the connection between the second side panel 32122 and the first plate 3112 is released, the second side panel 32122 can be pulled out to release the connection between the second sub-control module 3212 and the relay unit 340, and the second sub-control module 3212 can be removed from inside the first housing 31 for easy maintenance.

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

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

[0162] After the fourth plate 354 and the second plate 352 are disconnected, the fourth plate 354 can be removed and the fifth side plate 3222 can be accessed.

[0163] After the connection between the fifth side panel 3222 and the first plate 3112 is released, the fifth side panel 3222 can be pulled out to release the connection between the second control module 322 and the relay unit 340, and the second control module 322 can be removed from inside the first housing 31 for easy maintenance.

[0164] As shown in Figures 18 and 19, an embodiment of the present application further provides a battery module 100 comprising a second housing 1, a plurality of battery cells 2, and a control device 3 described in any of the above examples, 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 housed in different cavity units 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, the multiple battery cells 2 and the control device 3 are arranged in a stack along the first direction Z.

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

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

[0169] In one embodiment, the battery module 100 further includes a sixth lead 56 and a seventh lead 57 that can be used to electrically connect the control device 3 and the battery cells 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 disposed between adjacent cavity units 11, which can realize concealed wiring, and is advantageous for improving cleanliness and increasing the space utilization rate 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 disposed between adjacent cavity units 11, which allows for concealed wiring, and is advantageous in improving cleanliness and space utilization within the second housing 1.

[0173] Along the third direction X, the length of the control device 3 is a first distance d1, and the length of the battery cell 2 is a 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 certain cavity unit 11, which can increase the space utilization rate inside the second housing 1 and increase the 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 use conditions, two values ​​being equal includes the case where the difference between the two values ​​is 0±10%.

[0174] 19, 20, and 21, along the second direction Y, the length of the control device 3 is a third distance d3, the length of the battery cell 2 is a fourth distance d4, and d3 and d4 are equal. This satisfies the requirement that the depth of the cavity unit 11 along the second direction Y is capable of accommodating the control device 3 and the battery cell 2 at the same time, thereby increasing the space utilization rate inside the second housing 1 and enabling the degree of integration of the battery module 100 to be increased.

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

[0177] Next, a further explanation will be given taking as an example a case where the first terminal 22 and the second terminal 23 are provided on the same side of the electrode assembly.

[0178] See also Figures 3, 18, 19, 20 and 21. In one embodiment, the third opening 361, the fourth opening 362, the fifth opening 363 and the sixth opening 364 of the control device 3 allow the sixth lead wire 56 and / or the seventh lead wire 57 to pass therethrough.

[0179] In one embodiment, when a plurality of battery cells 2 and a control device 3 are installed in a stacked manner along the first direction Z, the first terminal 22 and the second terminal 23 are closer to the first wall 311 than the second wall 312. In this manner, the first terminal 22, the second terminal 23, and the first control module 321 are all provided close to the first wall 311, which makes it easy to arrange the lead wires and connects them to the first control module 321 via the first wall 311, thereby improving space utilization.

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

[0181] In addition, those skilled in the art may make other modifications within the spirit of the present application, and any modifications made based on the spirit of the present application should be included in the scope disclosed in the present application. [Explanation of symbols]

[0182] Battery module 100 2nd Shell 1 Cavity Unit 11 Battery cell 2 Battery case 21 1st terminal 22 2nd terminal 23 Total positive connection terminal 24 Total negative connection terminal 25 Control device 3 1st Shell 31 First recess 310 1st wall 311 First opening 3111 First Plate 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 board 32111 1st side plate 32112 First chip module 32113 First power supply module 32114 First communication connection unit 32116 1st Radio Division 32117 First display unit 32118 SOC indicator lamp 32118a Warning lamp 32118b 1st plug unit 32119 Second sub-control module 3212 Second Board 32121 2nd side plate 32122 Second Chip Module 32123 Second Power Module 32124 Second communication connection unit 32126 Memory Connection Unit 32127 2nd plug unit 32128 Third sub-control module 3213 Third Board 32131 3rd side plate 32132 3rd Chip Module 32133 3rd Power Module 32134 Voltage Control Unit 32135 3rd plug unit 32136 First Filter Unit 32137 Photoelectric coupling unit 32138 Fourth sub-control module 3214 4th Board 32141 4th side plate 32142 4th Chip Module 32143 4th Power Module 32144 Wireless communication module 32145 Detection Connection Unit 32146 Second control module 322 5th Board 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 First switch 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 Second Plate 352 Third Plate 353 4th Plate 354 2nd side 355 Third opening 361 Fourth opening 362 5th opening 363 6th opening 364 Second control member 348 Third control member 349 First guide rail 371 Second guide rail 372 3rd guide rail 373 4th guide rail 374 5th guide rail 375 Ventilation material 38 Temperature Sensor 391 Converter 4 First lead wire 51 Second lead wire 52 Third lead wire 53 4th lead wire 54 5th lead 7 6th lead wire 56 7th lead 57 8th lead 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 to 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 an inner wall of a part of the first recess, the first control module is disposed within 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, the first control module is closer to the first wall than the second wall; The first control module performs a corresponding control in response to a 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 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 to electrically connect 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 outside the first housing, the first control member and the first wall are provided opposite to each other in the second direction, A control device, characterized in that the first control member is connected to the first switch and controls the turning on and off of the first switch.

2. The control device according to claim 1 , wherein 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 , wherein the first control module and the first conductive path are spaced apart from each other along the first direction.

4. The control device of claim 1 , further comprising a second control module, the second control module being disposed between the first control module and the first conductive path along the first direction.

5. The control device according to claim 4 , wherein the second control module is used to perform corresponding conversion on power input from an external source.

6. The control device according to claim 5 , wherein the second control module is electrically connected to the first control module.

7. 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 in response to a state of a battery electrically connected to the first sub-control module; The second sub-control module performs a corresponding control in response to a state of a sensor electrically connected to the second sub-control module, The control device according to claim 1 , wherein the third sub-control module performs insulation monitoring by monitoring a resistance value in the first housing.

8. the first wall has a first opening; The first opening communicates with the first recess, 2 . The control device according to claim 1 , wherein the gas inside the first recess can be exchanged with the gas outside the first housing through the first opening.

9. The control device further includes a ventilation member, The ventilation member is provided on the first wall and faces the first opening, 9. The control device according to claim 8, wherein the ventilation member is capable of increasing a rate of exchange between the gas inside the first recess and the gas outside the first housing.

10. the first switch is in a first state and a second state; When the first switch is in the first state, the first control member has a portion that overlaps with the first opening when observed along the second direction, 9. The control device of claim 8, wherein when the first switch is in the second state, the first control member and the first opening are spaced apart from each other when viewed along the second direction.

11. the first state is a state in which 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 are interrupted; The control device according to claim 10 , wherein the second state is a state in which 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 are established.

12. The control device further includes a first connection member, The control device according to claim 1 , wherein the first connection member connects the first control member and the first switch.

13. 2. The control device according to claim 1, characterized in that the first conductive path includes a first cutting member capable of cutting off a connection path of the first conductive path when a current flowing through the first conductive path reaches a first threshold, and a second cutting member capable of cutting off the connection path of the first conductive path when a current flowing through the first conductive path reaches a second threshold.

14. 2. The control device according to claim 1, characterized in that the second conductive path includes a third cutting member capable of cutting off the connection path of the second conductive path when the current flowing through the second conductive path reaches a third threshold, and a fourth cutting member capable of cutting off the connection path of the second conductive path when the current flowing through the second conductive path reaches a fourth threshold.

15. A battery module, A second housing; The control device according to any one of claims 1 to 14, which is provided in the second housing; a plurality of battery cells provided in the second housing and connected to the control device; The battery module, wherein the plurality of battery cells and the control device are stacked along the first direction.

16. In a third direction perpendicular to the first direction and the second direction, 16. The battery module of claim 15, wherein a length of the control device is a first distance and a length of the battery cell is a second distance, the first distance being equal to the second distance.

17. The battery module further includes a lead wire, The battery module according to claim 15 , wherein the lead wire electrically connects the control device and at least one of the battery cells.

18. 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 15 , wherein the first terminal and the second terminal are closer to the first wall than the second wall in the second direction.

19. The battery module according to claim 15 , wherein the control device is provided between two adjacent battery cells in the first direction.

20. 16. The battery module of claim 15, wherein in the second direction, a length of the control device is a third distance and a length of the battery cell is a fourth distance, the third distance being equal to the fourth distance.

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