Battery management assembly, battery pack, and vehicle

Abstract

The present application relates to a battery management assembly, a battery pack, and a vehicle. The battery management assembly comprises a plurality of second circuit modules and a plurality of first circuit modules. The battery management assembly comprises: a first substrate, wherein the first substrate is provided with a plurality of first mounting positions for mounting the first circuit modules, at least two of the plurality of first mounting positions are connected to each other, and the plurality of first circuit modules are mounted on the plurality of first mounting positions; and a second substrate, wherein the second substrate is provided with a plurality of second mounting positions for mounting the second circuit modules, the plurality of second circuit modules are mounted on the plurality of second mounting positions, and the first substrate and the second substrate are electrically connected. By means of the technical solution of the present application, the electrical connection reliability is greatly improved, automatic production can be implemented, and production costs are greatly reduced.

Description

Battery management components, battery packs, and automobiles

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on January 7, 2024, with application number 202410020565X and application name “Battery Management Components, Battery Packs, and Automobiles,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of power battery technology, and in particular to battery management components, battery packs, and automobiles. Background Art

[0003] Due to their high energy density, rechargeable batteries, safety, and environmental friendliness, power batteries are widely used in new energy vehicles, consumer electronics, energy storage systems, and other fields. With the advancement of battery technology, various design parameters of power batteries are constantly improving, especially the technical advancements in battery pack management components.

[0004] BDU (Battery Disconnect Unit) is a component integrated into the battery pack. Currently, BDU production is mostly manual or semi-automated. The electrical parts of the high-voltage circuit are connected by bolts, and the low-voltage control circuit and high-voltage sampling circuit are connected by wiring harnesses and connectors. The assembly and connection process is complicated and cannot be fully automated. In addition, since the electrical parts are connected by bolts, wiring harnesses or connectors, the materials of electrical components, injection molded housings, copper busbars, wiring harnesses, connectors and fasteners make the component list more complicated, which is not conducive to the classification management of materials. Not only does it require high material control, but it also poses a major safety hazard to the reliability of electrical connections. Summary of the Invention

[0005] The main purpose of this application is to provide a battery management component, which aims to solve the technical problem that various electrical parts are connected by bolts, wiring harnesses or connectors, the assembly and connection process is complicated, full automation cannot be achieved, and there are major safety hazards in electrical connection reliability.

[0006] To achieve the above objectives, the battery management component proposed in this application includes multiple second circuit modules and multiple first circuit modules, and the battery management component includes:

[0007] a first substrate, wherein a plurality of first mounting locations for mounting the first circuit modules are provided on the first substrate, at least two of the plurality of first mounting locations are connected to each other, and the plurality of first circuit modules are mounted on the plurality of first mounting locations;

[0008] a second substrate, wherein a plurality of second mounting positions for mounting the second circuit modules are provided on the second substrate, and the plurality of second circuit modules are mounted on the plurality of second mounting positions;

[0009] The first substrate and the second substrate are electrically connected.

[0010] In some embodiments, at least two of the plurality of second mounting locations are connected to each other.

[0011] In some embodiments, the second substrate is a conductive bar.

[0012] In some embodiments, the first circuit module includes at least one of a power module, a relay control module, a circuit breaker control module, a communication module, a battery data sampling module, a shunt sampling module, and a monitoring module.

[0013] In some embodiments, the second circuit module includes at least one of a shunt, a main negative relay, a fast charge negative relay, a capacitor switch relay, a capacitor, a boost relay, a fast charge positive relay, a main positive relay, a pre-charge circuit, and a circuit breaker.

[0014] In some embodiments, a first interface electrically connected to the second circuit module is provided on the second substrate.

[0015] In some embodiments, the first substrate and the second substrate are arranged in parallel relative to each other;

[0016] Alternatively, the first substrate and the second substrate are arranged vertically relative to each other.

[0017] In some embodiments, the first substrate includes a plurality of sub-first substrates, and any of the sub-first substrates is electrically connected to at least one other sub-first substrate.

[0018] In some embodiments, the sub-first substrate and the second substrate are arranged with their surfaces facing each other, or the sub-first substrate is arranged on one side of the second substrate, and the sub-first substrate and the second substrate are arranged in an L-shape or a T-shape.

[0019] In some embodiments, one or more of the plurality of sub-first substrates are provided with a first substrate interface, and the first substrate interface includes a sampling interface, a communication interface, or a battery pack interaction interface.

[0020] In some embodiments, the battery management component further comprises:

[0021] The first substrate is electrically connected to at least one of the second circuit modules on the second substrate via the third substrate.

[0022] In some embodiments, the third substrate is electrically connected to at least one of the battery total negative sampling terminal, discharge negative sampling terminal, fast charge negative sampling terminal, capacitor switch sampling terminal, boost sampling terminal, fast charge positive sampling terminal, discharge positive sampling terminal, and battery total positive sampling terminal of the second circuit module;

[0023] The third substrate is respectively electrically connected to the positive control end of the main negative relay of the second circuit module, the negative control end of the main negative relay, the positive control end of the fast charging negative relay, the negative control end of the fast charging negative relay, the positive control end of the capacitor switching relay, the negative control end of the capacitor switching relay, the positive control end of the boost relay, the negative control end of the boost relay, the positive control end of the fast charging positive relay, the negative control end of the fast charging positive relay, the positive control end of the main positive relay, the negative control end of the main positive relay, the positive control end of the pre-charging relay, the negative control end of the pre-charging relay, the positive control end of the circuit breaker and at least one of the negative control end of the circuit breaker.

[0024] In some embodiments, the third substrate is welded to the first substrate, and the third substrate is welded to the second circuit module.

[0025] In some embodiments, the sampling circuit and the control circuit on the third substrate are spaced apart from each other.

[0026] In some embodiments, the third substrate is a flexible circuit board (FPC).

[0027] In some embodiments, one of the plurality of second circuit modules is a shunt, and the shunt is electrically connected to at least one of the first circuit modules on the first substrate.

[0028] In some embodiments, the diverter is connected to the first substrate via a wiring harness, an FPC, or a plug-in interface.

[0029] In some embodiments, the first substrate is a printed circuit board (PCBA).

[0030] In some embodiments, a first heat dissipation element is disposed on a side of the second substrate close to the second circuit module.

[0031] In some embodiments, the second substrate includes a first side and a second side opposite to each other, the first side of the second substrate is provided with at least one second circuit module, and the second side of the second substrate is provided with a second heat dissipation member.

[0032] In some embodiments, at least one of the second circuit modules includes a pre-charging circuit, the battery management component also includes a second interface, the second interface is connected to the pre-charging circuit, and the second heat sink is arranged on the second side of the second substrate relative to the second interface.

[0033] In some embodiments, the battery management assembly further includes a third heat sink, the third heat sink includes two opposite sides, there are multiple second substrates, and the multiple second substrates are respectively attached to the two sides of the third heat sink.

[0034] In some embodiments, a plurality of second circuit modules are sequentially arranged on the second substrate along a first direction, where the first direction is a length direction of the second substrate.

[0035] In some embodiments, the plurality of second circuit modules include:

[0036] The shunt, main negative relay, fast charge negative relay, capacitor switch relay, capacitor, boost relay, fast charge positive relay, main positive relay, pre-charge circuit and circuit breaker are arranged in sequence.

[0037] In some embodiments, the battery management component further includes a third interface, and the third interface includes:

[0038] The total negative interface, discharge negative interface, discharge positive interface, fast charge negative interface, boost interface, fast charge positive interface and total positive interface are arranged in sequence, the total negative interface is electrically connected to the shunt, the discharge negative interface is electrically connected to the main negative relay, the fast charge negative interface is electrically connected to the fast charge negative relay, the boost interface is electrically connected to the boost relay, the fast charge positive interface is electrically connected to the fast charge positive relay, and the total positive interface is electrically connected to the circuit breaker.

[0039] In some embodiments, the battery management component further includes at least one high-voltage interface, which includes at least one of a battery pack external discharge interface, a battery pack external boost interface, a battery pack external charging interface, and a battery pack interaction interface.

[0040] In some embodiments, a plurality of second circuit modules form a plurality of columns of second circuit module groups along the width direction of the second substrate; each second circuit module group includes at least one second circuit module sequentially arranged along the length direction of the second substrate.

[0041] In some embodiments, the plurality of columns of the second circuit module groups include a first column of the second circuit module groups and a second column of the second circuit module groups;

[0042] The second circuit module group in the first column includes: at least one of a circuit breaker, a pre-charge circuit, a main positive relay, a fast charge positive relay, and a boost relay;

[0043] The second circuit module group in the second column includes at least one of a shunt, a main negative relay, a fast charge negative relay, a capacitor switch relay, and a capacitor.

[0044] In some embodiments, the battery management component further includes a fourth interface, and the fourth interface includes:

[0045] At least one main interface, wherein the at least one main interface comprises: at least one of a main negative interface and a main positive interface;

[0046] and / or, at least one positive electrode interface, wherein the at least one positive electrode interface comprises at least one of a discharge positive interface, a fast charge positive interface, and a boost interface;

[0047] And / or, at least one negative electrode interface, at least one of the negative electrode interfaces includes: at least one of a discharge negative interface and a fast charge negative interface.

[0048] In some embodiments, when the fourth interface includes at least one positive electrode interface and at least one negative electrode interface, at least one positive electrode interface is arranged on the first side of the second substrate, and at least one negative electrode interface is arranged on the second side of the second substrate.

[0049] In some embodiments, the fourth interface includes:

[0050] at least one of a total negative interface and a total positive interface, wherein the total negative interface is electrically connected to the shunt, and the total positive interface is electrically connected to the circuit breaker;

[0051] and / or, at least one of a discharge positive interface, a fast charge positive interface, and a boost interface, wherein the discharge positive interface is electrically connected to the main positive relay, the fast charge positive interface is electrically connected to the fast charge positive relay, and the boost interface is electrically connected to the boost relay;

[0052] And / or, at least one of a discharge negative interface and a fast charge negative interface, the discharge negative interface is electrically connected to the main negative relay, and the fast charge negative interface is electrically connected to the fast charge negative relay.

[0053] In some embodiments, the second circuit module has a first side and a second side opposite to each other and a third side connecting the first side and the second side, and at least one contact is provided on the first side, the second side or the third side of the second circuit module.

[0054] In some embodiments, the contacts include a first contact, a second contact, and a third contact;

[0055] The first contact includes: at least one of a controlled end of a main negative relay, a controlled end of a fast charge negative relay, a controlled end of a capacitor switch relay, a controlled end of a boost relay, a controlled end of a fast charge positive relay, a controlled end of a main positive relay, a controlled end of a pre-charge circuit, and a controlled end of a circuit breaker;

[0056] The second contact includes: a positive control terminal of a main negative relay, a negative control terminal of a main negative relay, a positive control terminal of a fast charging negative relay, a negative control terminal of a fast charging negative relay, a positive control terminal of a capacitor switching relay, a negative control terminal of a capacitor switching relay, a positive control terminal of a boost relay, a negative control terminal of a boost relay, a positive control terminal of a fast charging positive relay, a negative control terminal of a fast charging positive relay, a positive control terminal of a main positive relay, a negative control terminal of a main positive relay, a positive control terminal of a pre-charging circuit, a negative control terminal of a pre-charging circuit, a positive control terminal of a circuit breaker, and a negative control terminal of a circuit breaker;

[0057] The third contact includes: at least one of a total negative sampling terminal of the battery, a negative sampling terminal of the discharge terminal, a negative sampling terminal of the fast charge terminal, a capacitor switch sampling terminal, a boost sampling terminal, a positive sampling terminal of the fast charge terminal, a positive sampling terminal of the discharge terminal, and a total positive sampling terminal of the battery.

[0058] To achieve the above objectives, the present application also proposes a battery pack, including the battery management component described above.

[0059] In some embodiments, a plurality of control boards are provided in the battery pack; and the plurality of control boards are electrically connected to the battery management assembly.

[0060] To achieve the above objectives, the present application also proposes a car, which includes the battery pack described above.

[0061] The embodiment of the present application adopts a first substrate and a second substrate that are electrically connected to each other, and a plurality of first mounting positions for setting a first circuit module are provided on the first substrate, and the first circuit module is electrically connected to at least one of the first circuit modules via the first substrate, and a plurality of second mounting positions for setting a second circuit module are provided on the second substrate, and the second circuit module is electrically connected to at least one of the second circuit modules via the second substrate. In the above manner, each electrical component is electrically connected through the first substrate and the second substrate, the modules are wirelessly bundled, and the assembly process is greatly simplified. In addition, mounting positions are provided on both the first substrate and the second substrate to install each electrical component, the reliability of the electrical connection is greatly improved, the production can be automated, and the production cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0063] FIG1 is a schematic structural diagram of an embodiment of a battery management assembly of the present application;

[0064] FIG2 is a schematic structural diagram of the first substrate in FIG1 ;

[0065] FIG3 is a schematic structural diagram of the first circuit module in FIG1 ;

[0066] FIG4 is a schematic structural diagram of the second substrate in FIG1 ;

[0067] FIG5 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0068] FIG6 is a circuit schematic diagram of the second circuit module in FIG5 ;

[0069] FIG7 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0070] FIG8 is a schematic structural diagram of another embodiment of a battery management component of the present application;

[0071] FIG9 is a schematic structural diagram of a first substrate and a second substrate arranged vertically;

[0072] FIG10 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0073] FIG11 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0074] FIG12 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0075] FIG13 is a schematic structural diagram of a pre-charging circuit of a battery management assembly of the present application;

[0076] FIG14 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0077] FIG15 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0078] FIG16 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0079] FIG17 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0080] FIG18 is a schematic side view of the square arrangement of FIG17 ;

[0081] FIG19 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0082] FIG20 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0083] FIG21 is a schematic diagram of another embodiment of the structure of the second circuit module in FIG20;

[0084] FIG22 is a schematic diagram of another embodiment of the structure of the second circuit module in FIG20;

[0085] FIG23 is a schematic diagram of the bottom structure of the second circuit module in FIG20;

[0086] FIG24 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0087] FIG25 is a side view of the battery management assembly of FIG24;

[0088] FIG26 is a schematic structural diagram of another embodiment of a battery management assembly of the present application;

[0089] FIG27 is a schematic structural diagram of an embodiment of a battery pack of the present application.

[0090] Description of Figure Numbers:

[0091] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0092] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0093] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0094] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0095] BDU, or battery pack disconnect unit, is a component integrated into the battery pack. Currently, BDU production is mostly manual or semi-automated. The electrical parts of the high-voltage circuit are connected by bolts, and the low-voltage control circuit and high-voltage sampling circuit are connected through wiring harnesses and connectors.

[0096] However, during the process of conceiving and implementing this application, the inventors discovered at least the following problems:

[0097] The assembly and connection process is complex and cannot be fully automated. Moreover, since the electrical parts are connected by bolts, wiring harnesses or connectors, the materials of electrical components, injection-molded housings, copper busbars, wiring harnesses, connectors and fasteners make the BOM (Bill of Material) relatively complex, which is not conducive to the classification and management of materials. Not only does it place high demands on material control, but it also poses a great safety hazard to the reliability of electrical connections.

[0098] In order to solve the above problems, the present application proposes a battery management component. Please refer to Figures 1 to 4 and Figure 15. The battery management component proposed in the present application includes multiple second circuit modules 120, multiple first circuit modules 150, a first substrate 100 and a second substrate 200.

[0099] In this embodiment, a plurality of first mounting positions 110 for mounting the first circuit modules 150 are provided on the first substrate 100 ; at least two of the plurality of first mounting positions 110 are connected to each other, and a plurality of first circuit modules 150 are mounted on the plurality of first mounting positions 110 .

[0100] The second substrate 200 is provided with a plurality of second mounting positions 210 for mounting the second circuit modules 120 ; the plurality of second circuit modules 120 are mounted on the plurality of second mounting positions 210 .

[0101] The first substrate 100 and the second substrate 200 are electrically connected.

[0102] In this embodiment, the second circuit module 120 can be a circuit module of a high-voltage circuit, the first circuit module 150 can be a circuit module integrating a control circuit, a sampling circuit and a monitoring circuit, the first mounting position 110 can be a soldering pad or a socket for mounting low-voltage electronic components, the second mounting position 210 can be a soldering pad or a socket for mounting high-voltage electronic components, the first substrate 100 can be a fiberglass board, a copper-clad board, an FPC (Flexible Printed Circuit) or a single-sided aluminum board, and the second substrate 200 can be a fiberglass board, a copper-clad board or an FPC, so that the installation of electronic components or electrical parts is more convenient and the reliability of carrying electronic components or electrical parts is stronger.

[0103] In this embodiment, the first mounting position 110 is arranged on the first substrate 100 in the form of a solder pad or a socket for installing the first circuit module 150, that is, installing a circuit module such as a control loop, a sampling loop or a monitoring loop on the first substrate 100, so that the first circuit module 150 is electrically connected to other circuit modules through the first mounting position 110. It can be understood that at least two of the first mounting positions 110 are interconnected. For example, any two first mounting positions 110 can be electrically connected by setting a circuit board circuit on the first substrate 100, so that multiple first circuit modules 150 can be electrically connected to each other to realize the sampling, monitoring and control functions of the circuit, and realize closed-loop control of the second circuit module 120. The second mounting position 210 is set on the second substrate 200 in the form of a solder pad or a socket for installing the second circuit module 120, that is, installing the circuit module of the high-voltage circuit on the second substrate 200, so that the second circuit module 120 is electrically connected to other second circuit modules 120 or the first circuit module 150 through the second mounting position 210 to achieve stable operation of the circuit, so that the battery management component is more stable during the charging and discharging process, and the electrical connection reliability is stronger.

[0104] It can be understood that in order to make the second circuit module 120 operate more stably and reliably after power is turned on, the second mounting position 210 is provided with a larger overcurrent margin, and at least two of the multiple second mounting positions 210 are interconnected, that is, among the multiple second mounting positions 210, at least two second mounting positions 210 are interconnected for electrical connection between the second circuit modules 120, but some second mounting positions 210 are separately set and used to connect external batteries or motors. The separately set second mounting position 210 can be electrically connected to other second mounting positions 210 through the second circuit module 120, and is not connected through the lines on the second substrate 200. Through the above-mentioned setting, the electrical parts can be connected through the circuit board without the need for wiring harness connection. The relevant connection style can be shown in Figure 2, and is not specifically limited in this solution.

[0105] In this embodiment, any two second mounting positions 210 are electrically connected by providing circuit board circuits on the second substrate 200 , so that multiple second circuit modules 120 are electrically connected to each other or the second circuit modules 120 are electrically connected to the first circuit module 150 .

[0106] In this embodiment, in order to achieve electrical connection between the first substrate 100 and the second substrate 200, that is, to achieve the effect of low voltage controlling high voltage and weak current controlling strong current, the first substrate 100 and the second substrate 200 can be electrically connected by providing a socket and an FPC, or the first substrate 100 and the second substrate 200 can be electrically connected by vertically snapping them together, that is, a socket is provided on the second substrate 200, and a gold finger is provided on the first substrate 100. By plugging the gold finger on the first substrate 100 into the socket of the second substrate 200, the first substrate 100 and the second substrate 200 can be stably electrically connected, and finally the second circuit module 120 is controlled by the first circuit module 150.

[0107] In this embodiment, the first circuit module 150 automatically inserts or attaches electronic components to the first substrate 100 by using plug-in components or patch components. For example, the first substrate 100 can be installed with electronic components such as sampling components, control components, monitoring components, and power supply components. Each electronic component is installed on the first substrate 100 through the first mounting position 110, thereby realizing the functions of control, sampling, or monitoring. The second substrate 200 is provided with electrical components such as relays, capacitors, circuit breakers, or shunts. Each electrical component is fixedly installed on the second substrate 200 through the second mounting position 210. On the substrate 200, electrical components do not need to be connected by wire harnesses, and the reliability of the electrical connection is greatly improved. The second circuit module automatically inserts the electrical components into the second substrate 200 through a machine by using a plug-in method. For example, the second substrate 200 can be installed with a fast charging relay for fast charging control, a main relay for discharge control, a boost relay for boosting the power supply of the DC charging station, or a capacitor for energy storage, etc., to achieve the functions of charging, discharging or power boosting, and the electrical components are integrated in the second substrate 200, and there is no wireless harness connection between the electrical components, which has stronger electrical connection stability.

[0108] In this embodiment, the second substrate 200 can be implemented by copper busbars or aluminum busbars, for example, it can be integrated or assembled. In some embodiments, the second substrate 200 of this solution adopts an integrated injection-molded copper busbar, which is of course not limited to this in other embodiments.

[0109] In this embodiment, to ensure that the battery management assembly can withstand the long-term high current and instantaneous high current of the second circuit module 120 during use, thereby ensuring the stability and electrical connection reliability of the battery management assembly, and at the same time, ensuring that the electromagnetic interference of the second circuit module 120 is low to avoid interference with the first circuit module 150 or other circuit devices, and to achieve miniaturization and optimization of the layout, an integral injection-molded copper busbar can be used as the second substrate 200 to withstand the long-term high current and instantaneous high current of the second circuit module 120. It can be understood that the integral injection-molded copper busbar has excellent heat dissipation and current carrying capacity. Using it as the second substrate 200 not only has a strong current carrying capacity, but also prevents overheating of the second circuit module 120, thereby making the circuit operation process more stable and reliable. By using the integral injection-molded copper busbar to fix the second circuit module 120, the assembly process is greatly simplified, the electrical connection reliability is greatly improved, and automated production can be carried out, which greatly reduces production costs.

[0110] In this embodiment, the first substrate 100 is a PCBA (Printed Circuit Board Assembly), which is of course not limited to this in other embodiments. For example, the first substrate 100 can be a soft board or a hard board. If it is a hard board, it can be a fiberglass board, a copper-clad board or a single-sided aluminum board. If it is a soft board, it can be an FPC.

[0111] In this embodiment, the first substrate 100 can be a fiberglass board or a copper clad board, followed by an FPC, so that the first circuit module 150 can be suitable for different installation and use environments, achieve the best control method and the best voltage and current resistance performance, and make the circuit use process more stable and reliable.

[0112] The technical solution of the present application adopts a first substrate 100 and a second substrate 200 that are electrically connected to each other, and a plurality of first mounting positions 110 for setting the first circuit module 150 are provided on the first substrate 100, and the first circuit module 150 is electrically connected to at least one of the first circuit modules 150 via the first substrate 100, and a plurality of second mounting positions 210 for setting the second circuit module 120 are provided on the second substrate 200, and the second circuit module 120 is electrically connected to at least one of the second circuit modules 120 via the second substrate 200. In this way, each electrical component is electrically connected through the first substrate 100 and the second substrate 200, reducing the large number of electrical component connection harnesses required in the related art, greatly simplifying the assembly process, and both the first substrate 100 and the second substrate 200 are provided with mounting positions for installing each electrical component, so the reliability of the electrical connection is greatly improved, the production can be automated, and the production cost is greatly reduced.

[0113] In this embodiment, the first circuit module 150 includes at least one of a power module 151 , a relay control module 153 , a circuit breaker control module 154 , a communication module 155 , a battery data sampling module 152 , a shunt sampling module 157 , and a monitoring module 156 .

[0114] In this embodiment, the first circuit module 150 can implement control functions through the relay control module 153 and the circuit breaker control module 154, power the electronic components in the first circuit module 150 through the power supply module 151, implement internal communication functions of the first circuit module 150 or communicate with a controller outside the battery pack through the communication module 155, implement the function of sampling the current, voltage, and temperature of the second circuit module 120 through the battery data sampling module 152, implement the function of sampling the current of the second circuit module 120 through the shunt sampling module 157, and implement the function of monitoring the insulation capacity and heat of the second circuit module through the monitoring module 156. It is understood that in order to better implement the sampling, monitoring, or control functions of the second circuit module 120, the first circuit module 150 may also include modules capable of implementing functions such as wireless communication or human-computer interaction, which are not specifically limited in this technical solution. This allows the first circuit module 150 to form open-loop or closed-loop control of the second circuit module 120, thereby making the operation of the second circuit module 120 more stable and reliable. It can be understood that the above-mentioned modules can be set at the same time, or only any one or more of them can be set to achieve the required control function, power supply function, sampling function or monitoring function. For example, the relay control module 153 can be set separately to achieve the open-loop control function of each relay in the second circuit module 120. For example, only the circuit breaker control module 154 can be set to achieve the control function of the circuit breaker 1215. It can also be that a shunt sampling module 157 and a circuit breaker control module 154 are set. After sampling the total current on the second circuit module 120, the total current is fed back to the relay control module 153 so that the relay control module 153 adjusts the control signal output to the second circuit module 120. The above embodiment is only a simple example. In the process of realizing the circuit function, the above-mentioned first circuit modules 150 can be set separately or freely combined according to actual use needs, and no specific limitation is made in this technical solution.

[0115] In this embodiment, the first circuit module 150 can be a BMS (Battery Management System) control circuit. In the battery management component, the first circuit module 150 is used to collect the current and voltage signals of the second circuit module 120 to perform corresponding control functions based on the current and voltage signals. The total current data of the second circuit module 120 during operation is collected through the shunt on the second circuit module 120, and then fed back to the first circuit module 150 for processing, and the control signal output to the second circuit module 120 is adjusted to stabilize the voltage and current signals output by the second circuit module 120 to the motor, or to stabilize the voltage and current signals input by the DC charging socket to the second circuit module 120. For example, the first circuit module 150 may include a power supply module 151 for supplying power to the first circuit module 150, a relay control module 153 for controlling the relays on the second circuit module 120, a sampling module 158 for collecting the status of various components in the high-voltage circuit during operation, a circuit breaker control module 154 for controlling the circuit breaker 1215, a communication module 155 for communicating with other circuit modules, and a charging confirmation module 156 for managing power during battery charging. Furthermore, the first circuit module 150 may also include a wake-up module for waking the first circuit module 150 from a dormant state to perform control, sampling, or monitoring functions. By providing the wake-up module, the first circuit module 150 can automatically enter dormancy when not in use for a long period of time. When the first circuit module 150 is needed, it can be awakened by the wake-up module, thereby enabling the circuit board to better save power consumption.

[0116] In this embodiment, at least two first circuit modules 150 are electrically connected to each other so that the data collected by the sampling module 158 and the data monitored by the monitoring module 156 can be fed back to the relay control module 153 or the circuit breaker control module 154, and the relay control module 153 or the circuit breaker control module 154 sends a new control signal to the control end of each relay, so as to enable the first circuit module 150 to sample and control the high-voltage circuit on the second circuit module 120 or monitor and manage the charging or discharging of the battery pack, thereby realizing the optimal closed-loop control method of the second circuit module 120 and making the operation process of the second circuit module 120 more stable and reliable.

[0117] It is understandable that the first substrate 100 in FIG. 2 is merely a schematic illustration, and the arrangement of the connectors and electronic components thereon is not specifically limited.

[0118] 5 , 6 , 14 and 15 , further, another embodiment of the present application provides a battery management component. Based on the embodiments shown in the above-mentioned Figures 1 to 4 , the second circuit module includes at least one of a shunt 1211 , a main negative relay 1213 , a fast charging negative relay 1221 , a capacitor switching relay 1222 , a capacitor 1223 , a boost relay 1224 , a fast charging positive relay 1225 , a main positive relay 1214 , a pre-charging circuit 1212 and a circuit breaker 1215 .

[0119] In this embodiment, the second circuit module 120 is used to implement the battery charging and discharging functions and the motor control function, thereby controlling the input and output of the power supply of the power battery pack and controlling the movement and stopping of the motor. For example, the first high-voltage power distribution module 121 is composed of a circuit breaker 1215, a main positive relay 1214, a pre-charge circuit 1212, a main negative relay 1213, and a shunt 1211. The circuit breaker 1215 is connected to the main positive interface 770, the shunt 1211 is connected to the main negative interface 710, the pre-charge circuit 1212 includes a pre-charge relay and a pre-charge resistor. The pre-charge resistor is used to protect the pre-charge relay when the current flowing through the pre-charge relay is too large. The first high-voltage power distribution module 121 is used to control the output of the power battery pack or stop the output.

[0120] The circuit breaker 1215 is used to cut off the operation of the second circuit module 120 in time when an excessive current appears in the second circuit module 120, so as to avoid the burning of the electrical parts of the second circuit module 120. The pre-charging circuit 1212 and the main positive relay 1214 are connected in parallel, mainly to avoid the current flowing through the main positive relay 1214 being too large when the circuit is started, causing the main positive relay 1214 to burn. By providing the pre-charging circuit 1212, at the initial stage of circuit startup, the first circuit module 150 controls the pre-charging relay to be turned on and controls the main positive relay 1214 to be turned off, so that the current flows to the pre-charging circuit 1212. When the power supply is working stably, the first circuit module 150 controls the main positive relay 1214 to open and take over the work of the pre-charging circuit, and continuously and stably supplies energy to the motor, and the circuit stability is stronger.

[0121] The second circuit module includes an electric drive assembly module 123 composed of a three-phase drive bridge circuit. The electric drive assembly module 123 is used for inversion, converting the direct current of the power battery pack into three-phase alternating current, and connecting the three-phase alternating current to the winding of the motor. The winding is a star-connected winding. The controlled end of the three-phase drive bridge circuit is connected to the output end of the first high-voltage distribution module 121. Through the switching action of the three-phase drive bridge circuit, stable control of the motor is achieved to ensure a longer service life of the motor.

[0122] In this embodiment, the fast charging positive relay 1225, the boost relay 1224, the capacitor 1223, the capacitor switch relay 1222 and the fast charging negative relay 1221 constitute a second high-voltage distribution module 122. The fast charging positive relay 1225 is connected to the circuit breaker 1215 for connecting the DC socket and the positive pole of the power battery pack. The fast charging negative relay 1221 is connected to the shunt 1211 for connecting the DC socket and the negative pole of the power battery pack. The boost relay 1224 is used to connect to the center point of the three-phase winding of the motor to provide a stable voltage power supply to the motor winding to ensure that the motor operation process is more stable and reliable. The second high-voltage distribution module 122 is used to quickly charge the DC power supply into the power battery pack through the DC socket, or to supply the power output of the power battery pack to other vehicles or equipment.

[0123] In this embodiment, please refer to Figure 6, FU is the circuit breaker 1215, K1 is the main positive relay 1214, K2 is the pre-charge relay of the pre-charge circuit 1212, K3 is the main negative relay 1213, RU is the shunt 1211, K4 is the fast charge positive relay 1225, K5 is the boost relay 1224, C is the capacitor 1223, K6 is the capacitor switch relay 1222, and K7 is the fast charge negative relay 1221.

[0124] It is understandable that the above-mentioned second circuit module 120 can be set up separately, for example, only one main positive relay 1214 is set up to realize the function of connecting the path between the motor and the battery to realize the function of battery discharge, or only a fast charging positive relay 1225 is set up to realize the function of connecting the path between the DC charging station and the battery to meet the requirements of fast battery charging. In addition to the single setting method, it can also be set up in a free combination method, for example, a circuit breaker 1215 and a main positive relay 1214 are set up to realize the function of connecting the path between the motor and the battery while protecting the safety of circuit operation. The above embodiment is only a simple example. In the process of realizing the charging function or discharging function of the second circuit module 120, the above-mentioned second circuit modules 120 can be set up separately or freely combined according to actual use needs, and no specific limitation is made in this technical solution.

[0125] 7 , further, another embodiment of the present application provides a battery management assembly. Based on the embodiment shown in FIG. 1 , a first interface 300 electrically connected to the second circuit module 120 is provided on the second substrate 200 .

[0126] In this embodiment, the first interface 300 is a channel for the second circuit module 120 on the second substrate 200 to connect to an external motor or a DC charging socket, i.e., an input channel for the fast-charging relay to input current to the battery pack or an output channel for the main relay to output current to the motor. The first interface 300 includes a main interface, a positive electrode interface, and a negative electrode interface to enable current to be delivered to an external circuit, such as a motor or a transformer, or to connect the power of the battery pack or DC charging socket to the second circuit module 120, for example, through the main interface to the battery pack and through the fast-charging relay to the DC charging socket, thereby enabling the battery management assembly to connect to the power battery pack and the motor. In addition, because the interface is directly integrated on the second substrate 200 in this embodiment, the first interface 300 and the second circuit module 120 are electrically connected via the wiring on the second substrate 200. Compared to the existing method of using a wiring harness to connect the interface of the second circuit module 120 one-to-one, this method has higher electrical connection reliability. Moreover, because it is welded and integrated on the second substrate 200, the assembly process is simplified, which can better achieve production automation.

[0127] With reference to Figures 1, 8, 9 and 19, further, the present application also provides a battery management component in another embodiment. Based on the embodiment shown in Figure 1 above, the first substrate 100 and the second substrate 200 are relatively arranged in parallel; or, the first substrate 100 and the second substrate 200 are relatively arranged vertically.

[0128] In this embodiment, to achieve better electrical connection between the first substrate 100 and the second substrate 200, the first substrate 100 and the second substrate 200 are arranged side by side relative to each other. A plug connector is provided on one of the first substrate 100 and the second substrate 200, and a plug interface is provided on the other. Quick connection is performed between the plug connector and the plug interface to achieve electrical connection between the first substrate 100 and the second substrate 200. For example, the side-by-side arrangement can be completely parallel, relatively parallel, or positioned at a certain angle, such as a 10-degree angle difference between the first substrate 100 and the second substrate 200, all of which are similar to the technical solutions of the present application. Alternatively, the first substrate 100 and the second substrate 200 may be arranged vertically relative to each other. For example, the relative verticality may be completely vertical, or a connection method with a certain inclination angle. For example, the first substrate 100 may be directly inserted vertically into the second substrate 200, or inserted nearly vertically into the second substrate 200. A slot or an interface may be provided on the second substrate 100, such as a DDR3 (full name double-data-rate three synchronous dynamic random access memory) style slot or a female header style interface. Corresponding gold fingers may be provided on the first substrate 100. By plugging the gold fingers into the slots or interfaces, an electrical connection between the first substrate 100 and the second substrate 200 is achieved, thereby enabling stable transmission between high and low voltage electrical signals.

[0129] In this embodiment, the first substrate 100 includes a plurality of sub-first substrates 140, any of the sub-first substrates 140 is electrically connected to at least one other sub-first substrate 140, and the sub-first substrate and the second substrate are arranged with their surfaces facing each other, or the sub-first substrate is arranged on one side of the second substrate, and the sub-first substrate and the second substrate are arranged in an L-shape or T-shape.

[0130] In this embodiment, since the first substrate 100 is long and rectangular, in order to reduce the height of the battery management assembly, the width of the first substrate 100 needs to be reduced. If the circuit principle and components remain unchanged, reducing the width necessarily increases the length. However, once the length of the circuit board exceeds a certain value, for example, an aspect ratio of 10, the circuit board will bend, significantly reducing the service life of the first substrate 100. To address this issue, this embodiment divides the first substrate 100 into multiple sub-first substrates 140 along the length direction, and then connects adjacent sub-first substrates 140 via connectors 130. For example, connectors 130 can be flexible printed circuit boards (FPCs) to prevent the problem of bending of an excessively long first substrate 100, which would significantly reduce its service life, thereby improving the stability of the electrical connection of the first substrate 100. In addition, since the first substrate 100 is divided into multiple sub-first substrates 140, the connection method between the sub-first substrates 140 can be flexible and diverse. Figure 19 is only a reference style and is not a specific limitation. The sub-first substrates 140 can be electrically connected not only on the wide sides, but also on the long sides. During actual use, the sub-first substrates 140 can be flipped and folded and placed on the same side, or the shape of the connecting member 130 can be changed to make the sub-first substrates 140 distributed on different sides.

[0131] In this embodiment, one or more of the plurality of first sub-substrates 140 are provided with a first substrate interface, and the first substrate interface includes a communication interface, a sampling interface, or a battery pack interaction interface.

[0132] In this embodiment, the first substrate interface is an interface for connecting the battery pack to the external battery management assembly and is provided on the first substrate. For example, as shown in FIG27 , the communication interface can achieve communication between the first substrate 100 and each control board 800 through daisy chain, wireless communication, or wired communication technology. For example, the battery pack interaction interface can process charging confirmation signals, controller 12V power supply signals, wake-up signals, collision signals, communication signals, etc. For example, the sampling interface can accurately collect battery pack voltage and current data to determine the battery pack's operating status, thereby ensuring more stable and reliable operation of the battery management assembly.

[0133] It can be understood that the third substrate 400 in Figure 8 is displayed in a perspective manner in order to avoid blocking the relevant structural diagram of the second circuit module 120. The third substrate 400 is not specifically limited to be transparent, nor is it unclear in the diagram; in addition, Figure 19 is mainly used to show the style of the connecting member 130 between the sub-first substrates.

[0134] In combination with Figure 10, further, another embodiment of the present application provides a battery management component. Based on the embodiments shown in Figures 1 to 9 above, the battery management component also includes a third substrate 400, and the first substrate 100 is electrically connected to at least one second circuit module 120 on the second substrate 200 via the third substrate 400.

[0135] In this embodiment, the third substrate 400 may be a hard board or a soft board. If it is a hard board, the third substrate 400 may be a copper-clad board or a fiberglass board. If it is a soft board, the third substrate 400 may be an FPC.

[0136] In this embodiment, the third substrate 400 may be an FPC. By providing the third substrate 400 to connect the second circuit module 120 to the first substrate 100, the number of wiring harnesses connecting the second circuit module 120 to the first substrate 100 can be reduced. By switching the third substrate 400, weak current can be used to control strong current, significantly improving the stability and reliability of current transmission.

[0137] In this embodiment, the third substrate 400 is electrically connected to the first substrate 100 or the second circuit module 120 by plugging, hot pressing welding, laser welding or clamping. For example, corresponding matching plug interfaces can be provided on the first substrate 100 and the third substrate 400 respectively, or gold finger pads can be provided on the third substrate 400, and connected plug pads are provided on the first substrate 100. The gold finger pads are plugged into the plug pads to achieve electrical connection between the gold finger pads and the plug pads, or gold finger pads are provided on the third substrate 400 and hot pressing pads are provided on the first substrate 100. Under the action of heat or ultrasound, the gold finger pads on the third substrate 400 are pressed and fixed on the hot pressing pads of the first substrate 100 to achieve electrical connection between the third substrate 400 and the first substrate 100. In some embodiments, the first substrate 100 and the third substrate 400 are welded by hot pressing welding. In some embodiments, the third substrate 400 is hot-pressed and welded to the first substrate 100, which can better output the control signal of the first circuit module 150 or collect the operating status signal of the second circuit module, thereby achieving stable and reliable high-voltage sampling or control relay operation.

[0138] In this embodiment, the third substrate 400 is electrically connected to the control end of the second circuit module 120, and the contact of the second circuit module 120 is a nickel sheet. In order to better electrically connect it with the third substrate 400, it can be fixed by laser welding, or by soldering with a soldering iron or other welding methods. In some embodiments, the third substrate 400 and the second circuit module 120 are laser welded together. By using laser welding to fix the third substrate 400 and the second circuit module 120, the electrical connection between the third substrate 400 and the second circuit module 120 is firm, and the control signal of the first circuit module 150 can be better transmitted to each control contact of each second circuit module through the third substrate 400, or the signal of each sampling contact can be transmitted to the first circuit module 150 through the third substrate 400, so that the control process is more stable and reliable, and the stability and reliability of the transmission of the control signal and the sampling signal are significantly improved.

[0139] 11 and 12, further, another embodiment of the present application provides a battery management component. Based on the embodiment shown in FIG10 above, the third substrate 400 is electrically connected to at least one of the battery total negative sampling terminal, discharge negative sampling terminal, fast charge negative sampling terminal, capacitor switch sampling terminal, boost sampling terminal, fast charge positive sampling terminal, discharge positive sampling terminal and battery total positive sampling terminal of the second circuit module 120; the third substrate 400 is electrically connected to the positive control terminal of the main negative relay 1213 of the second circuit module, the negative control terminal of the main negative relay 1213, the fast charge negative relay 1221 The positive control end of the fast charging negative relay 1221, the positive control end of the capacitor switching relay 1222, the negative control end of the capacitor switching relay 1222, the positive control end of the boost relay 1224, the negative control end of the boost relay 1224, the positive control end of the fast charging positive relay 1225, the negative control end of the fast charging positive relay 1225, the positive control end of the main positive relay 1214, the negative control end of the main positive relay 1214, the positive control end of the pre-charging relay, the negative control end of the pre-charging relay, the positive control end of the circuit breaker 1215 and at least one of the negative control end of the circuit breaker 1215 are electrically connected.

[0140] In this embodiment, various sampling terminals and control terminals are provided on the third substrate 400 and connected to corresponding contacts one by one to realize the control or sampling function. Through the switching function of the third substrate 400, the various sampling terminals and control terminals on the second circuit module 120 are electrically connected to the first substrate 100. For example, corresponding sampling modules and control modules are provided on the first substrate 100 to perform corresponding sampling functions and control functions to realize closed-loop control of the second circuit module 120 by the first circuit module 150, so that the charging or discharging process of the second circuit module 120 is more stable and reliable.

[0141] In this embodiment, the sampling circuit and the control circuit on the third substrate 400 are spaced apart from each other.

[0142] In this embodiment, the third substrate 400 is connected to each sampling terminal of the second circuit module 120 to form a sampling circuit connected to the first substrate 100, and the third substrate 400 is connected to each control terminal of the second circuit module 120 to form a control circuit connected to the first substrate 100, wherein the sampling circuit is a high-voltage circuit that collects high-voltage signals on the second circuit module 120, and the control circuit is a low-voltage circuit that sends control signals to control the switches of each relay. The sampling circuit and the control circuit are separated to avoid interference between the high voltage and the low voltage signals. In this circuit, if the sampling circuit and the control circuit are If the lines are not separated, the control signal will become unstable, causing unstable battery operation, which will lead to safety hazards in the battery. The two parts of the circuit are spaced apart to form a corresponding electrical gap 410. The spacing setting method includes separating the strata, increasing the line spacing or digging holes. For example, while ensuring sufficient electrical gap, it is also necessary to ensure that the overall volume of the third substrate 400 is small, which can not only enable the high and low voltage circuits to operate separately, so that the low voltage control circuit is protected from the influence of high voltage fluctuations, but also integrate and miniaturize the overall circuit structure to improve the stability of the first circuit module 150.

[0143] In this embodiment, an electrical gap 410 is formed by spacing the connection lines of the second circuit module 120 and the connection lines of the first circuit module 150. The electrical gap 410 is a method of combating interference by increasing the line spacing, which can effectively prevent the electromagnetic interference of the high-voltage sampling circuit from affecting the operation of the low-voltage control circuit. For example, according to different voltage levels, the minimum line spacing without any interference between strong and weak electricity is determined, and based on this, the design is carried out to achieve wiring separation of high and low voltage signals, thereby protecting the low-voltage control circuit from the influence of high-voltage fluctuations and making the circuit more stable.

[0144] In combination with reference to Figure 12, further, the present application also provides a battery management component in an embodiment. Based on the embodiment shown in Figure 1 above, one of the multiple second circuit modules 120 is a shunt 1211, and the shunt 1211 is electrically connected to at least one first circuit module 150 on the first substrate 100. The shunt 1211 and the first substrate 100 are connected through a wiring harness or FPC, and the shunt 1211 and the first substrate 100 are connected through a plug interface.

[0145] In this embodiment, the current of the high-voltage circuit is collected by the shunt 1211, and then electrically connected to at least one of the first circuit modules 150 on the first substrate 100. That is, after the shunt 1211 collects the current of the high-voltage circuit, it is electrically connected to one or more first circuit modules 150 on the first substrate 100. In addition, during the signal transmission process, due to the conversion performed by the shunt 1211, the high-voltage signal will not flow directly through the first substrate 100, thereby avoiding the risk of the first substrate 100 being broken down by the high voltage, and realizing safe operation of weak electricity, so as to avoid the high-voltage signal on the second substrate 200 affecting the stability of the operation of the first substrate 100, and its electrical performance is better.

[0146] In this embodiment, in order to facilitate the electrical connection between the diverter 1211 and the first substrate 100, a plug interface, wiring harness or FPC connection is provided so that the diverter 1211 can transmit the signal to the first substrate 100, and the stability and reliability of the signal transmission process are enhanced.

[0147] 13 , further, another embodiment of the present application provides a battery management assembly. Based on the embodiment shown in FIG. 1 , a first heat sink 600 is provided on the second substrate 200 near the second circuit module 120 .

[0148] In this embodiment, the second circuit module 120 is a high-voltage circuit that tends to generate a lot of heat during operation. To reduce the heat generated by the operation of the second circuit module 120 and extend the service life of the electronic components, a first heat sink 600 can be provided near the electronic components that generate relatively high heat. That is, the first heat sink 600 is provided on the side of the second substrate 200 facing away from the first substrate 100. For example, the first heat sink 600 is completely attached to the second substrate 200, and the size of the first heat sink 600 is similar to that of the second circuit module 120, so that the first heat sink 600 can effectively dissipate heat and effectively dissipate the heat generated during the operation of the high-voltage circuit. The first heat sink 600 can be a cooling copper busbar, which is not particularly limited in this application.

[0149] 3 , 13 and 14 , further, another embodiment of the present application provides a battery management assembly. Based on the embodiment shown in FIG1 above, the second substrate 200 has a first side and a second side relative to each other, the first side of the second substrate 200 is provided with at least one second circuit module 120, and the second side of the second substrate is provided with a second heat dissipation member 500.

[0150] In this embodiment, a heat-dissipating metal plate can be used as the second heat sink 500 to dissipate heat for the entire second substrate 200. For example, the size of the second heat sink 500 can be equal to, slightly smaller than, or slightly larger than the second circuit module 120. By being tightly attached to the second substrate 200, the heat on the second substrate 200 can be promptly transferred to the external environment, thereby promptly removing the heat from the second circuit module 120 through the second substrate 200. This allows components with higher heat generation to fully dissipate heat, resulting in a more efficient and effective heat dissipation effect, thereby preventing the burning of electronic components.

[0151] It can be understood that, as shown in Figure 14, with the top, bottom, left and right of the figure as the reference direction, the first side mentioned in this embodiment is the upper side of the second substrate 200, and the second circuit module 120 is provided on the first side, and the third substrate 400 and the first substrate 100 are provided above the second circuit module 120. The second side is the lower side of the second substrate 200, and a second heat sink 500 is provided at a position that is attached to the second side. This is not limited in other embodiments.

[0152] In this embodiment, at least one of the second circuit modules 120 includes a pre-charging circuit 1212, and the battery management component also includes a second interface, which is connected to the pre-charging circuit 1212, and the second heat sink 500 is arranged on the second side of the second substrate 200 relative to the second interface position.

[0153] In this embodiment, the second circuit module 120 includes a pre-charge circuit 1212. The pre-charge circuit 1212 is used to prevent excessive starting current from burning the main positive relay 1214 when the first circuit module 150 controls the start-up of the electric drive assembly module. Referring to Figure 6, in this embodiment, the pre-charge circuit 1212 can be connected in parallel across the main positive relay 1214. When the electric drive assembly module is started, the first circuit module 150 controls the main positive relay 1214 to be turned off and the pre-charge circuit 1212 to be turned on, so that the starting current flows through the pre-charge circuit 1212. When the circuit current stabilizes, the main positive relay 1214 is turned on again.

[0154] At the same time, when the pre-charging circuit 1212 is turned on, a larger starting current will flow through the pre-charging resistor in the pre-charging circuit 1212, causing the pre-charging circuit 1212 to heat up. At this time, a second heat sink 500 can be provided on the side of the second substrate 200 relatively away from the pre-charging circuit 1212. The second heat sink 500 is also connected to the second interface on the pre-charging circuit 1212, so that the pre-charging circuit 1212 can transfer heat for heat dissipation, thereby realizing temperature reduction management of the device, and dissipating the heat of the pre-charging resistor by the second heat sink 500, so that the stability of the circuit operation is stronger.

[0155] 24 and 25 , further, another embodiment of the present application provides a battery management component. Based on the embodiment shown in FIG1 above, the battery management component also includes a third heat dissipation member 900. The third heat dissipation member 900 has two opposite sides. There are multiple second substrates 200, and the multiple second substrates 200 are respectively adhered to both sides of the third heat dissipation member 900.

[0156] In this embodiment, in order to maximize the utilization of the third heat sink 900, a second substrate 200 is provided on both opposite sides thereof, and the second substrate 200 is tightly fitted on both sides of the third heat sink 900. The second substrates 200 on both sides are connected by connectors. Since the third heat sink 900 is relatively thin and the spacing between them is short, U-shaped pin headers or connectors can be used to electrically connect the second substrates 200 arranged on both sides of the third heat sink 900, so as to better electrically connect the second substrates 200 while meeting the heat dissipation requirements and reducing space, so that the second circuit module 120 can operate more stably.

[0157] In this embodiment, the third heat sink 900 can be a heat dissipation metal plate, for example, a heat dissipation copper busbar, which is similar to or the same as the first heat sink 600. At least one second substrate 200 is connected to the two planes of the third heat sink 900, and at least one second circuit module 120 is mounted on the second substrate 200. The area of ​​the third heat sink 900 is not less than the second substrate 200 with the largest area, or is slightly smaller than the second substrate 200 with the largest area, or is equal to the second substrate 200 with the largest area, and the second substrate 200 is tightly attached to the third heat sink 900, which can better play a heat dissipation role, so that the second circuit module 120 can operate more stably and reliably.

[0158] In combination with reference to Figure 15, further, another embodiment of the present application provides a battery management component. Based on the embodiment shown in Figure 1 above, multiple second circuit modules 120 are arranged in sequence along the first direction on the second substrate 200, and the first direction is the length direction of the second substrate 200; the multiple second circuit modules may include: a shunt 1211, a main negative relay 1213, a fast charging negative relay 1221, a capacitor switching relay 1222, a capacitor 1223, a boost relay 1224, a fast charging positive relay 1225, a main positive relay 1214, a pre-charging circuit 1212 and a circuit breaker 1215 arranged in sequence.

[0159] In this embodiment, the second substrate 200 is arranged in a sequential order on its upper surface, with the longitudinal direction serving as the first direction. The electronic components are arranged in accordance with optimal spacing requirements. The ordering is based on the electrical connection relationships between high-voltage components, making the circuit planning on the second substrate 200 more defined and clear, preventing crossovers and ensuring more stable and reliable circuit operation. Furthermore, the defined layout facilitates faster, more efficient welding and installation. Furthermore, the clear layout facilitates the placement of components by the welding robot according to the machine's positioning when welding the second circuit module 120, making wiring more convenient and more reliable while simplifying installation.

[0160] With reference to FIG16 , another embodiment of the present application further provides a battery management component. Based on the embodiment shown in FIG15 , the battery management component further includes a third interface 700 . The third interface 700 includes:

[0161] One or more of the total negative interface 710, the discharge negative interface 720, the discharge positive interface 730, the fast charge negative interface 740, the boost interface 750, the fast charge positive interface 760 and the total positive interface 770 are arranged in sequence, the total negative interface 710 is electrically connected to the shunt 1211, the discharge negative interface 720 is electrically connected to the main negative relay 1213, the fast charge negative interface 740 is electrically connected to the fast charge negative relay 1221, the boost interface 750 is electrically connected to the boost relay 1224, the fast charge positive interface 760 is electrically connected to the fast charge positive relay 1225, and the total positive interface 770 is electrically connected to the circuit breaker 1215.

[0162] In this embodiment, after the components are arranged in order, it is necessary to lead out the output end through various interfaces to realize the control process of the motor or charging device and the charging and discharging process of the power battery. The third interface 700 includes one or more of the total negative interface 710, the discharge negative interface 720, the discharge positive interface 730, the fast charge negative interface 740, the boost interface 750, the fast charge positive interface 760 and the total positive interface, which are arranged in sequence. For example, the above-mentioned interfaces can appear alone or in combination. Not all of the above-mentioned interfaces need to be provided in each setting. The relevant interfaces can be adjusted according to the needs of the actual product. In general, it mainly includes three major interfaces, namely the main interface, the positive interface and the negative interface. The three interfaces do not necessarily appear at the same time. For example, between the discharge positive interface and the discharge negative interface, only the discharge negative interface can be provided. At least one positive interface and / or at least one negative interface are arranged in a line, and the main interface is then arranged at both ends of the second substrate 200, that is, in the width direction of the second substrate 200, and each positive interface and each negative interface are arranged on one side of the second circuit module 120, that is, arranged on any side in the length direction of the second substrate 200, and each positive interface and each negative interface are arranged on the same side and are electrically connected to the second circuit module 120, thereby realizing the extraction of the above-mentioned main interface, positive interface and negative interface, so as to realize the input of battery current or the output of motor current, so that the current input or current output of the second circuit module 120 is more stable, and effectively avoids the problem of poor electrical connection stability in the process of directly extracting the main interface, positive interface or negative interface from the second circuit module 120 through the wiring harness in the related art.

[0163] In combination with Figures 17 and 18, further, another embodiment of the present application provides a battery management component. Based on the embodiment shown in Figure 1 above, multiple second circuit modules 120 form multiple columns of second circuit module groups along the width direction of the second substrate 200; each second circuit module group includes at least one second circuit module 120 arranged in sequence along the length direction of the second substrate 200.

[0164] Multiple columns of the second circuit module groups include a first column of the second circuit module group and a second column of the second circuit module group; the first column of the second circuit module group includes: one or more of the circuit breaker 1215, the pre-charging circuit 1212, the main positive relay 1214, the fast charging positive relay 1225 and the boost relay 1224; the second column of the second circuit module group includes: one or more of the shunt 1211, the main negative relay 1213, the fast charging negative relay 1221, the capacitor switch relay 1222 and the capacitor 1223.

[0165] In this embodiment, the long strip-shaped battery management assembly is cut and divided along the long sides of the second substrate 200 to form a plurality of second circuit module groups, and then the long sides of the second circuit module groups are connected together to extend the wide sides, thereby converting the long strip-shaped second substrate 200 into a square second substrate 200. For example, the second circuit module can be divided into two second circuit module groups, and the two second circuit module groups are arranged side by side in the width direction to form a square battery management assembly, thereby reducing the occupied length and shrinking the usable space.

[0166] In this embodiment, after the relays, shunts, circuit breakers, and other electrical components are arranged in sequence, corresponding interfaces need to be provided for each electrical component to lead out the output terminals of each electrical component to control the motor or charging device and realize the charging and discharging process of the power battery. Prior to this, it is necessary to arrange the electrical components according to the optimal spacing requirements. The arrangement rules are arranged according to the electrical connection relationship between the high-voltage components. This makes the wiring planning on the second substrate 200 more clear and clear, and the circuits do not cross. This reduces interference during the operation of the second circuit module 120, and the circuit operation can be more stable and reliable. The defined layout can make the machine more convenient, faster, and more efficient during welding and installation. In addition, the clear layout can facilitate the welding robot to install components according to the machine positioning when welding the second circuit module 120, making wiring more convenient and reliable under the conditions of simple installation.

[0167] In this embodiment, the battery management component further includes a fourth interface, and the fourth interface includes:

[0168] At least one main interface, at least one of the main interfaces includes: at least one of a main negative interface and a main positive interface; and / or, at least one positive electrode interface, at least one of the positive electrode interface includes: at least one of a discharge positive interface, a fast charge positive interface and a boost interface; and / or, at least one negative electrode interface, at least one of the negative electrode interface includes: at least one of a discharge negative interface and a fast charge negative interface.

[0169] When at least one positive electrode interface and at least one negative electrode interface are included, at least one positive electrode interface is arranged on the first side of the second substrate, and at least one negative electrode interface is arranged on the second side of the second substrate.

[0170] The fourth interface includes: at least one of a total negative interface 710 and a total positive interface 770 arranged along the width direction of the second substrate 200, the total negative interface 710 is electrically connected to the shunt 1211, and the total positive interface 770 is electrically connected to the circuit breaker 1215; at least one of a discharge positive interface 730, a fast charge positive interface 760 and a boost interface 750 arranged along one side of the length direction of the second substrate 200, the discharge positive interface 730 is electrically connected to the main positive relay 1214, the fast charge positive interface 760 is electrically connected to the fast charge positive relay 1225, and the boost interface 750 is electrically connected to the boost relay 1224; at least one of a discharge negative interface 720 and a fast charge negative interface 740 arranged along the other side of the length direction of the second substrate 200, the discharge negative interface 720 is electrically connected to the main negative relay 1213, and the fast charge negative interface 740 is electrically connected to the fast charge negative relay 1221.

[0171] In this embodiment, there can be only one or more of the above-mentioned interfaces. The main interface, positive interface or negative interface do not need to appear at the same time. Only one of the interfaces can appear, for example, only the main interface, or two or all three interfaces can appear. For example, after the components are arranged in order, it is necessary to lead out the output end through various interfaces to realize the control process of the motor or charging device and the charging and discharging process of the power battery. The second substrate 200 of this embodiment is set to a square shape at this time. Its length is greatly reduced compared to the long strip-shaped second substrate 200, and the various devices are not distributed on the side of the same length direction. If the interfaces are forcibly connected to the same side, problems such as line crossing and lead-out difficulty will occur, and interference will also occur in the lines. In order to avoid the occurrence of this problem, the interfaces are arranged in different positions. For example, the fourth interface includes three interfaces, namely the main interface, the positive interface and the negative interface. Port and negative interface. First, after the above-mentioned layout of the second circuit module 120, it is determined that the total interface is located in the width direction of the second substrate 200, the positive interface is located on one side of the length direction of the second substrate 200, and the negative interface is located on the other side of the length direction of the second substrate 200, and is electrically connected to the second circuit module 120, so as to realize the lead-out of the interface circuit. For example, the total interface includes a total negative interface 710 and a total positive interface 770, the positive interface includes a discharge positive interface 730, a fast charging positive interface 760 and a boost interface 750, and the negative interface includes a discharge negative interface 720 and a fast charging negative interface 740. Through the layout design of each interface, not only can the stability of the circuit operation be greatly improved, but also if the layout is reasonable, there will be no problem of line crossing, and there will be no problem of needing jumpers. Its layout is more in line with the requirements of module wireless bundling, greatly simplifies the assembly process, greatly improves the reliability of electrical connection, can be automated, and greatly reduces production costs.

[0172] It is understandable that the third substrate 400 in FIG. 17 is displayed in a perspective manner to avoid blocking the relevant structural diagram of the second circuit module 120 , and the third substrate 400 is not specifically limited to be transparent, nor is it unclear in the diagram.

[0173] With reference to Figures 20 to 23 , another embodiment of the present application provides a battery management assembly. Based on the embodiment shown in Figure 1 , the second circuit module has a first side and a second side opposite to each other, and a third side connecting the first side and the second side. At least one contact 124 is provided on the first side, the second side, or the third side of the second circuit module 120. The contact includes a first contact, a second contact, and / or a third contact.

[0174] The first contact includes: at least one of the controlled end of the main negative relay, the controlled end of the fast charging negative relay, the controlled end of the capacitor switch relay, the controlled end of the boost relay, the controlled end of the fast charging positive relay, the controlled end of the main positive relay, the controlled end of the pre-charge circuit, and the controlled end of the circuit breaker; the second contact includes: the positive control end of the main negative relay, the negative control end of the main negative relay, the positive control end of the fast charging negative relay, the negative control end of the fast charging negative relay, the positive control end of the capacitor switch relay, the negative control end of the capacitor switch relay, the positive control end of the boost relay, and the negative control end of the capacitor switch relay. Control terminal, the negative control terminal of the boost relay, the positive control terminal of the fast charge positive relay, the negative control terminal of the fast charge positive relay, the positive control terminal of the main positive relay, the negative control terminal of the main positive relay, the positive control terminal of the pre-charge relay, the negative control terminal of the pre-charge relay, the positive control terminal of the circuit breaker and the negative control terminal of the circuit breaker; the third contact includes: one or more of the battery total negative sampling terminal, the discharge negative sampling terminal, the fast charge negative sampling terminal, the capacitor switch sampling terminal, the boost sampling terminal, the fast charge positive sampling terminal, the discharge positive sampling terminal and the battery total positive sampling terminal.

[0175] It can be understood that in this embodiment, there is at least one contact 124 provided on the first side, the second side or the third side of the second circuit module 120, that is, the entire second circuit module 120 can have only one contact 124, and when there is only one contact 124, it must be the first contact. For example, there is at least one first contact, and the second contact and the third contact may not be set, or they can be set. If set, there can be only one second contact or third contact, or one of the two can be set with multiple or a combination of two contacts. For example, for a capacitor, there is only a first contact, but no second contact and third contact. Relevant adjustments are made according to different device characteristics, and are not specifically limited in this solution.

[0176] In this embodiment, the contact 124 is the controlled end, high-voltage sampling end, low-voltage sampling end or control end of the second circuit module 120. The controlled end of the second circuit module 120 is a high-voltage controlled pin. In this embodiment, the high-voltage controlled pin is used to be installed on the second mounting position 210.

[0177] Furthermore, to better implement open-loop and closed-loop control of the second circuit module 120, second and / or third contacts can be provided on the first, second, or third sides of the second circuit module 120. For example, assuming the first side is the side close to the second substrate 200, the second side is the side away from the second substrate 200, and the third side is the intermediate side connecting the first and second sides. These contacts are used to sample the voltage and current during operation of the second circuit module 120 or to control the switching of the second circuit module 120. Furthermore, when any two or three of the first, second, and third contacts are provided simultaneously, they can be provided on the same side, such as on the first side, or on separate sides, to facilitate sampling and control, and to facilitate electrical connection between the second circuit module 120 and the third substrate 400. Furthermore, this arrangement significantly enhances circuit layout flexibility, allowing designers to determine the location of the contacts 124 based on the different design requirements of the battery management assembly and in accordance with safety regulations. For example, there is no specific limit on the number of contacts 124 of the second circuit module 120. The number and positions of the contacts shown in the drawings are for illustration only and are not specifically limited thereto. In addition, the shape of the contacts 124 is not limited to a square shape, but can also be a circular, triangular, or other shape that is convenient for electrical connection with the third substrate 400. Figures 20 to 22 are reference styles for showing the second and third contacts and are not specifically limited thereto. Figure 23 is a reference style for showing the first contact and is similarly not specifically limited to that shown in the drawings.

[0178] In combination with reference to Figure 26, further, another embodiment of the present application provides a battery management component. Based on the embodiment shown in Figure 1 above, the battery management component also includes at least one high-voltage interface, and the high-voltage interface includes at least one of a battery pack external discharge interface, a battery pack external boost interface, a battery pack external charging interface or a battery pack interaction interface.

[0179] In this embodiment, an interface for discharging, boosting, charging or controlling is provided on the side of the second circuit module 120 to facilitate quick disconnection and realize a quick installation process of the battery management component. The production process can be automated, which is more consistent with the concept of this technical solution. In addition, the control interface can be used to realize the control function through charging confirmation signals, controller 12V power supply signals, wake-up signals, collision signals, communication signals, etc. The layout is more in line with the requirements of wireless module bundling, greatly simplifies the assembly process, greatly improves the reliability of electrical connection, and can be automated, and the production cost is greatly reduced.

[0180] The present application also proposes a battery pack, which includes a battery management component. The relevant structure of the battery management component refers to the above-mentioned embodiment. Since the battery pack of this embodiment adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0181] With reference to FIG. 27 , an embodiment of the present application provides a battery pack, wherein a plurality of control boards 800 are provided in the battery pack; the plurality of control boards 800 are electrically connected to the battery management assembly.

[0182] In this embodiment, the control board 800 controls the corresponding battery pack and is connected to the adjacent control board 800 in series. The control boards 800 at both ends are electrically connected to the battery management component. The control board 800 and the battery management component are connected by wired or wireless means. The wireless means can be Bluetooth or 4G. The control board 800 is interconnected with multiple control boards 800 through the battery management component, and each control board 800 separately collects or controls the signal of a single battery pack. Its stability and reliability are stronger, and the overall control is performed through the battery management component, making management more convenient and reliable.

[0183] In this embodiment, the plurality of control boards 800 and the battery management components communicate with each other via daisy chain technology.

[0184] The daisy chain technology adopted in this embodiment has higher stability and reliability compared to CAN (Controller Area Network) communication technology. When a battery fails, it can stop working in time to avoid failure of the entire circuit due to a single battery failure. In addition, multiple devices can be connected using limited signal transmission lines to share the same service, and there is no problem of bus contention and congestion.

[0185] The present application also proposes a car, which includes the above-mentioned battery pack. The relevant structure of the battery pack refers to the above-mentioned embodiment. Since the car of this embodiment adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0186] The above is an implementation method provided in conjunction with specific content, and the specific implementation of this application is not limited to these descriptions. Any similarity or similarity with the methods and structures of this application, or any technical deduction or replacement based on the concept of this application, shall be considered within the scope of protection of this application.

Claims

1. A battery management component, characterized in that, The battery management component includes a plurality of second circuit modules and a plurality of first circuit modules, and the battery management component includes: A first substrate, on which a plurality of first mounting positions for mounting the first circuit modules are provided, at least two of the plurality of first mounting positions are connected to each other, and the plurality of first circuit modules are mounted on the plurality of first mounting positions; A second substrate, on which a plurality of second mounting positions for mounting the second circuit modules are provided, and the plurality of second circuit modules are mounted on the plurality of second mounting positions; The first substrate and the second substrate are electrically connected.

2. The battery management component according to claim 1, wherein At least two of the plurality of second mounting positions are connected to each other.

3. The battery management component according to claim 1, characterized in that The second substrate is a conductive bus bar.

4. The battery management component according to claim 1, characterized in that The first circuit module includes at least one of a power module, a relay control module, a circuit breaker control module, a communication module, a battery data sampling module, a shunt sampling module, and a monitoring module.

5. The battery management component according to claim 1, characterized in that The second circuit module includes at least one of a shunt, a main negative relay, a fast charge negative relay, a capacitor switch relay, a capacitor, a boost relay, a fast charge positive relay, a main positive relay, a pre-charge circuit, and a circuit breaker.

6. The battery management component according to claim 5, wherein A first interface corresponding to the second circuit module is provided on the second substrate.

7. The battery management component according to claim 1, wherein The first substrate and the second substrate are arranged side by side relative to each other; Or, the first substrate and the second substrate are arranged perpendicular to each other relative to each other.

8. The battery management component according to claim 1, wherein The first substrate includes a plurality of sub-first substrates, and any one of the sub-first substrates is electrically connected to at least one other sub-first substrate.

9. The battery management component according to claim 8, wherein the sub-first substrate and the second substrate are arranged with their plate surfaces facing each other, or the sub-first substrate is arranged on one side of the second substrate, and the sub-first substrate and the second substrate are arranged in an L shape or a T shape.

10. The battery management component according to claim 8, characterized in that, One or more of the plurality of sub-first substrates are provided with first substrate interfaces, and the first substrate interfaces include communication interfaces, sampling interfaces, or battery pack interaction interfaces.

11. The battery management component according to any one of claims 1-10, characterized in that, The battery management component further includes: A third substrate, and the first substrate is electrically connected to at least one of the second circuit modules on the second substrate through the third substrate.

12. The battery management component according to claim 11, wherein The third substrate is electrically connected to at least one of the battery total negative sampling end, the discharge negative sampling end, the fast charge negative sampling end, the capacitor switch sampling end, the boost sampling end, the fast charge positive sampling end, the discharge positive sampling end, and the battery total positive sampling end of the second circuit module; The third substrate is electrically connected to at least one of the positive control end, the negative control end of the main negative relay, the positive control end, the negative control end of the fast charge negative relay, the positive control end, the negative control end of the capacitor switch relay, the positive control end, the negative control end of the boost relay, the positive control end, the negative control end of the fast charge positive relay, the positive control end, the negative control end of the main positive relay, the positive control end, the negative control end of the pre-charge relay, the positive control end, the negative control end of the circuit breaker of the second circuit module.

13. The battery management component according to claim 11, wherein The third substrate is welded to the first substrate, and the third substrate is welded to the second circuit module.

14. The battery management component according to claim 12, characterized in that, The sampling circuit and the control circuit on the third substrate are spaced apart.

15. The battery management component according to claim 11, wherein, The third substrate is a flexible printed circuit board FPC.

16. The battery management component according to claim 1, characterized in that, One of the plurality of second circuit modules is a shunt, and the shunt is electrically connected to at least one of the first circuit modules on the first substrate.

17. The battery management component according to claim 16, wherein The shunt is connected to the first substrate through a wire harness, an FPC or a socket.

18. The battery management component according to claim 1, characterized in that, The first substrate is a printed circuit board PCBA.

19. The battery management component according to claim 1, wherein A first heat sink is provided on one side of the second substrate close to the second circuit module.

20. The battery management component according to claim 1, characterized in that, The second substrate includes opposite first and second sides. At least one of the second circuit modules is provided on the first side of the second substrate, and a second heat sink is provided on the second side of the second substrate.

21. The battery management component according to claim 20, characterized in that, At least one of the second circuit modules includes a precharge circuit. The battery management component further includes a second interface, the second interface is connected to the precharge circuit, and the second heat sink is provided at a position opposite to the second interface on the second side of the second substrate.

22. The battery management component according to claim 1, characterized in that, The battery management component further includes a third heat sink. The third heat sink includes opposite two sides. There are a plurality of the second substrates, and the plurality of second substrates are respectively attached to the two sides of the third heat sink.

23. The battery management component according to claim 1, characterized in that, The plurality of second circuit modules are sequentially arranged on the second substrate in a first direction, and the first direction is the length direction of the second substrate.

24. The battery management component according to claim 23, characterized in that, The plurality of second circuit modules include: A shunt, a main negative relay, a fast charge negative relay, a capacitor switch relay, a capacitor, a boost relay, a fast charge positive relay, a main positive relay, a precharge circuit, and a circuit breaker arranged in sequence.

25. The battery management component according to claim 24, wherein The battery management component further includes a third interface, and the third interface includes: A total negative interface, a discharge negative interface, a discharge positive interface, a fast charge negative interface, a boost interface, a fast charge positive interface, and a total positive interface arranged in sequence. The total negative interface is electrically connected to the shunt, the discharge negative interface is electrically connected to the main negative relay, the fast charge negative interface is electrically connected to the fast charge negative relay, the boost interface is electrically connected to the boost relay, the fast charge positive interface is electrically connected to the fast charge positive relay, and the total positive interface is electrically connected to the circuit breaker.

26. The battery management component according to claim 1, characterized in that The battery management component further includes at least one high-voltage interface, and the high-voltage interface includes at least one of a battery pack external discharge interface, a battery pack external boost interface, a battery pack external charge interface, and a battery pack interaction interface.

27. The battery management component according to claim 1, wherein, The plurality of second circuit modules form multiple columns of second circuit module groups along the width direction of the second substrate; each second circuit module group includes at least one of the second circuit modules sequentially arranged along the length direction of the second substrate.

28. The battery management component according to claim 27, wherein The multiple columns of second circuit module groups include a first column of second circuit module groups and a second column of second circuit module groups; The first column of second circuit module groups includes at least one of a circuit breaker, a precharge circuit, a main positive relay, a fast charge positive relay, and a boost relay; The second circuit module group described in the second column includes at least one of a shunt, a main negative relay, a fast charge negative relay, a capacitor switch relay, and a capacitor.

29. The battery management component according to claim 27, wherein The battery management component further includes a fourth interface, and the fourth interface includes: At least one general interface, and at least one of the at least one general interface includes at least one of a general negative interface and a general positive interface; And / or, at least one positive interface, and at least one of the at least one positive interface includes at least one of a discharge positive interface, a fast charge positive interface, and a boost interface; And / or, at least one negative interface, and at least one of the at least one negative interface includes at least one of a discharge negative interface and a fast charge negative interface.

30. The battery management component according to claim 29, wherein, When the fourth interface includes at least one of the at least one positive interface and at least one of the at least one negative interface, at least one of the at least one positive interface is disposed on the first side of the second substrate, and at least one of the at least one negative interface is disposed on the second side of the second substrate.

31. The battery management component according to claim 30, wherein, The fourth interface includes: At least one of a general negative interface and a general positive interface, the general negative interface is electrically connected to the shunt, and the general positive interface is electrically connected to the circuit breaker; And / or, at least one of a discharge positive interface, a fast charge positive interface, and a boost interface, the discharge positive interface is electrically connected to the main positive relay, the fast charge positive interface is electrically connected to the fast charge positive relay, and the boost interface is electrically connected to the boost relay; And / or, at least one of a discharge negative interface and a fast charge negative interface, the discharge negative interface is electrically connected to the main negative relay, and the fast charge negative interface is electrically connected to the fast charge negative relay.

32. The battery management component according to claim 1, wherein, The second circuit module has opposite first and second sides and a third side connecting the first and second sides, and at least one contact is provided on the first side, second side, or third side of the second circuit module.

33. The battery management component according to claim 32, wherein, The contact includes a first contact, a second contact, and a third contact; The first contact includes at least one of a controlled end of the main negative relay, a controlled end of the fast charge negative relay, a controlled end of the capacitor switch relay, a controlled end of the boost relay, a controlled end of the fast charge positive relay, a controlled end of the main positive relay, a controlled end of the pre-charge circuit, and a controlled end of the circuit breaker; The second contact includes at least one of a positive control end of the main negative relay, a negative control end of the main negative relay, a positive control end of the fast charge negative relay, a negative control end of the fast charge negative relay, a positive control end of the capacitor switch relay, a negative control end of the capacitor switch relay, a positive control end of the boost relay, a negative control end of the boost relay, a positive control end of the fast charge positive relay, a negative control end of the fast charge positive relay, a positive control end of the main positive relay, a negative control end of the main positive relay, a positive control end of the pre-charge circuit, a negative control end of the pre-charge circuit, a positive control end of the circuit breaker, and a negative control end of the circuit breaker; The third contact includes at least one of a battery total negative sampling end, a discharge negative sampling end, a fast charge negative sampling end, a capacitor switch sampling end, a boost sampling end, a fast charge positive sampling end, a discharge positive sampling end, and a battery total positive sampling end.

34. A battery pack, characterized in that, Including the battery management component according to any one of claims 1-33.

35. The battery pack according to claim 34, wherein A plurality of control boards are arranged in the battery pack; the plurality of control boards are electrically connected to the battery management component.

36. An automobile, characterized in that, The vehicle includes the battery pack according to any one of claims 34-35.

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