CN117199564A - Battery management assembly, battery and battery system - Google Patents

Abstract

The application discloses a battery management assembly, a battery and a battery system, wherein the battery management assembly comprises: a battery housing having oppositely disposed inner and outer surfaces, the inner surface of the battery housing defining an interior cavity for receiving the battery cells; the signal acquisition module is used for acquiring a current core signal; and the wireless transmission module is electrically connected with the signal acquisition module, and is at least partially positioned on the outer side of the outer surface of the battery shell, or the outer end surface of the wireless transmission module is flush with the outer surface of the battery shell so as to carry out wireless communication with the outside. The battery management assembly realizes wireless transmission of the electric core signals, the required installation space is small, the installation space required by a signal wire harness is saved, the volume density of a battery system is improved, and the safety and the reliability of the battery system are also improved; and moreover, the signal sent by the wireless transmission module directly reaches the outside of the battery shell, so that the reliability of wireless communication between the wireless transmission module and the outside is improved.

Description

Battery management assembly, battery and battery system

Technical Field

The present application relates to the field of battery cell monitoring, and more particularly, to a battery management assembly, a battery, and a battery system.

Background

The battery system needs to monitor the state of the battery cells to ensure that the battery system is operating in a steady state. At present, a signal acquisition module (signal terminal, temperature sensor) is mainly used for acquiring a battery cell signal, and a communication wire harness is used for transmitting the battery cell signal to a battery management system so as to monitor the state of the battery cell.

In the above monitoring mode, the space occupied by the signal wire harness is large, resulting in the volume density of the battery system.

In addition, the signal wire harness is at risk of damage to the wire skin, so that the signal wire harness is short-circuited, and secondary damage is caused by the short-circuit of the signal wire harness in a thermal runaway scene, so that the safety and reliability of the whole battery system are low.

In summary, how to collect and transmit the cell signals to increase the volume density of the battery system is a problem to be solved by those skilled in the art.

Disclosure of Invention

It is therefore an object of the present application to provide a battery management assembly, a battery and a battery system to increase the bulk density of the battery system based on the acquisition and transmission of the cell signals.

In order to achieve the above purpose, the present application provides the following technical solutions:

a battery management assembly comprising:

the battery shell is provided with an inner surface and an outer surface which are distributed oppositely, and the inner surface of the battery shell encloses an inner cavity for placing the battery cell;

the signal acquisition module is used for acquiring signals of the battery cell;

the wireless transmission module is electrically connected with the signal acquisition module, and is at least partially positioned on the outer side of the outer surface of the battery shell, or the outer end surface of the wireless transmission module is flush with the outer surface of the battery shell so as to carry out wireless communication with the outside.

Optionally, the entire wireless transmission module is located outside of the outer surface of the battery case.

Optionally, the wireless transmission module is embedded on the battery shell.

Optionally, the entire signal acquisition module is located inside the inner surface of the battery housing.

Optionally, the signal acquisition module is embedded on the battery shell;

the inner end face of the signal acquisition module extends out of the inner surface of the battery shell, the inner end face of the signal acquisition module is flush with the inner surface of the battery shell, or the inner end face of the signal acquisition module is located between the outer surface and the inner surface of the battery shell.

Optionally, the battery case is provided with a connection member, and the wireless transmission module is disposed on the connection member, and/or the signal acquisition module is disposed on the connection member.

Optionally, the outer end face of the wireless transmission module extends out of the outer end face of the connecting member, or the outer end face of the wireless transmission module is flush with the outer end face of the connecting member, or the outer end face of the wireless transmission module is located at one side, close to the inner cavity, of the outer end face of the connecting member;

and/or the inner end surface of the signal acquisition module extends out of the inner end surface of the connecting member, the inner end surface of the signal acquisition module is flush with the inner end surface of the connecting member, or the inner end surface of the signal acquisition module is positioned on one side, far away from the inner cavity, of the inner end surface of the connecting member.

Optionally, the outer end surface of the connecting member extends out of the outer surface of the battery shell, the outer end surface of the connecting member is flush with the outer surface of the battery shell, or the outer end surface of the connecting member is located on one side of the outer surface of the battery shell, which is close to the inner cavity;

and/or the inner end surface of the connecting member extends out of the inner surface of the battery shell, the inner end surface of the connecting member is flush with the inner surface of the battery shell, or the inner end surface of the connecting member is positioned on one side of the inner surface of the battery shell away from the inner cavity.

Optionally, the connecting member and the battery case are of an integral structure or a split structure;

and/or the connecting component is a connecting sleeve, and the connecting sleeve is sleeved outside the signal acquisition module and the wireless transmission module.

Optionally, the connection member and the battery case are detachably connected.

Optionally, the wireless transmission module is detachably arranged on the battery shell;

and/or, the wireless transmission module is detachably and electrically connected with the signal acquisition module;

and/or, the signal acquisition module is detachably arranged on the battery shell.

Optionally, the wireless transmission module is in sealing connection with the battery shell;

and/or, the signal acquisition module is in sealing connection with the battery shell;

and/or the wireless transmission module and the signal acquisition module are of an integrated structure or a split structure.

Optionally, the battery management assembly further includes a protection module, where the protection module is configured to protect the wireless transmission module and/or the signal acquisition module.

Optionally, the battery shell comprises a battery shell and a battery cover plate hermetically connected with the battery shell; the wireless transmission module and the signal acquisition module are both arranged on the battery cover plate.

Optionally, the battery management assembly further includes a wireless receiving module, the wireless receiving module is located on the outer side of the battery shell, and the wireless receiving module and the wireless transmission module are in wireless communication.

Based on the battery management assembly provided by the application, the application further provides a battery, and the battery comprises the battery management assembly.

Based on the battery provided by the application, the application also provides a battery system which comprises the battery.

The battery management assembly provided by the application is used for acquiring the core signals through the signal acquisition module, and wirelessly communicates with the outside through the wireless transmission module electrically connected with the signal acquisition module, so that the core signals are wirelessly transmitted; meanwhile, the short circuit of the signal wire harness is avoided, the secondary damage caused by the short circuit of the signal wire harness in the out-of-control scene of the battery cell is avoided, and the safety and reliability of the battery system are improved.

In the battery management assembly provided by the application, the wireless transmission module is arranged on the battery shell, and at least part of the wireless transmission module is positioned on the outer side of the outer surface of the battery shell or the outer end surface of the wireless transmission module is flush with the outer surface of the battery shell, so that a signal sent by the wireless transmission module directly reaches the outer part of the battery shell, the wireless communication between the wireless transmission module and the outer part of the battery shell is facilitated, and the reliability of the wireless communication between the wireless transmission module and the outer part is improved; the sealing of the battery shell is also facilitated to be ensured, so that the sealing performance of the battery is facilitated to be ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a battery according to a first embodiment of the present application;

fig. 2 is a schematic structural diagram of another battery according to a first embodiment of the present application;

fig. 3 is a schematic structural diagram of another battery according to a first embodiment of the present application;

fig. 4 is a schematic structural diagram of a battery according to a second embodiment of the present application;

fig. 5 is a schematic structural diagram of another battery according to the second embodiment of the present application;

fig. 6 is a schematic structural diagram of a signal acquisition module and a wireless transmission module in a battery before installation according to a third embodiment of the present application;

fig. 7 is a schematic structural diagram of a signal acquisition module and a wireless transmission module in a battery according to a third embodiment of the present application after being installed.

In fig. 1-7:

1 is a battery shell, 2 is a battery core, 3 is an electrode, 4 is a signal acquisition module, 5 is a wireless transmission module, 6 is a wireless receiving module, and 7 is a connecting member;

11 is a battery shell, 12 is a battery cover plate;

41 is the outer end face of the signal acquisition module, 42 is the inner end face of the signal acquisition module, 51 is the outer end face of the wireless transmission module, 51 is the inner end face of the wireless transmission module, 71 is the outer end face of the connecting member, 72 is the inner end face of the connecting member, 111 is the outer surface of the shell, 112 is the inner surface of the shell, 121 is the outer face of the board, 122 is the inner face of the board, and 01 is the inner cavity.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include, for example, "one or more" such forms of expression, unless the context clearly indicates to the contrary. It should also be understood that in embodiments of the present application, "one or more" means one, two, or more than two; "and/or", describes an association relationship of the association object, indicating that three relationships may exist; for example, a and/or B may represent: a alone, a and B together, and B alone, wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

The embodiment of the application provides a battery management assembly, a battery and a battery system, which are used for improving the volume density of the battery system on the basis of acquiring and transmitting a battery cell signal.

The battery system includes at least one battery, for example, two or more batteries. The specific number and arrangement of the batteries are selected according to practical situations, and the embodiment of the application is not limited to this.

The battery system may be an energy storage battery system or a power battery system, and the specific type and specific structure of the battery system are not limited in the embodiment of the present application. Accordingly, the embodiment of the application is not limited to the type of the battery.

The battery provided by the embodiment of the application is described below with reference to fig. 1 to 7.

The battery mainly comprises: the battery comprises a battery shell 11, a battery cover plate 12, an electric core 2 and a battery pole 3; the battery housing 11 has a cavity, the battery cover 12 and the battery housing 11 are connected in a sealing manner to form a closed inner cavity 01, the battery cell 2 is arranged in the inner cavity 01, and the battery pole 3 is arranged on the battery cover 12.

It will be appreciated that the battery housing 11 may be referred to as a component of the battery case 1 and the battery cover 12 may also be referred to as a component of the battery case 1. The battery case 1 has an inner surface and an outer surface which are oppositely distributed, and the inner surface of the battery case 1 encloses an inner cavity 01 in which the battery cells 2 are placed. The outer surface of the battery case 1 includes the panel outer face 121 of the battery cover 12 and the case outer face 111 of the battery case 11, and the inner surface of the battery case 1 includes the panel inner face 122 of the battery cover 12 and the case inner face 112 of the battery case 11.

The above-described cell 2 may be referred to as a bare cell. It should be noted that, the bare cell 13 refers to an electrochemical cell including a positive electrode and a negative electrode, and the specific chemical composition and type of the electrochemical cell are not limited in the embodiment of the present application.

The number of the battery poles 3 is two, one is a positive pole and the other is a negative pole. The positive electrode post is electrically connected with the positive electrode of the battery cell 2, and the negative electrode post is electrically connected with the negative electrode of the battery cell 2.

In practical application, medium such as electrolyte is usually disposed in the inner cavity 01 to ensure the normal charge and discharge functions of the battery cell 2.

For collecting and transmitting the cell signals, the battery also comprises a signal collecting module 4 and a wireless transmission module 5. The signal acquisition module 4 is used for acquiring signals of the electric core 2, and the wireless transmission module 5 and the signal acquisition module 4 are electrically connected to ensure signal communication between the wireless transmission module 5 and the signal acquisition module 4.

The specific type of the signal acquisition module 4 and the acquired parameters (cell signals) are selected according to the actual situation, and this embodiment is not limited.

In order to enhance the signal acquisition capability and expand the signal monitoring range, and improve the safety and reliability of the battery system, the signal acquisition module 4 may optionally include a temperature sensor, and/or a pressure sensor, and/or a gas sensor.

The temperature sensor is used for detecting the temperature in the inner cavity 01 or the temperature of the battery cell 2; the pressure sensor is used for detecting the pressure in the inner cavity 01; the gas sensor is used to detect a gas composition within the lumen 01 and/or a duty cycle of the gas composition within the lumen 01.

In the structure, the variety of the signals which can be acquired by the signal acquisition module 4 is increased, and compared with the prior art which can only monitor the voltage and the current, the reliability of monitoring the battery system is improved.

In other embodiments, the signal acquisition module 4 may also detect other parameters, not limited to the temperature, pressure, gas composition, and gas composition duty cycle described above.

In the battery system, parameters acquired by the signal acquisition modules 4 of at least two batteries may be the same or different, and are selected according to practical situations, which is not limited in the embodiment of the present application.

The wireless transmission module 5 receives the electric core signal acquired by the signal acquisition module 4, and the wireless transmission module 5 wirelessly transmits the electric core signal to the outside of the battery shell 1, namely, the wireless transmission module 5 wirelessly communicates with the outside of the battery shell 1. The wireless transmission module 5 may also process the received electrical core signal, and wirelessly transmit the processed electrical core signal to the outside of the battery case 1. The specific type of the wireless transmission module 5 is selected according to practical situations, and the embodiment of the present application is not limited thereto.

To facilitate the acquisition and transmission of the cell signals, a wireless transmission module 5 may be optionally located at the end of the signal acquisition module 4 remote from the cavity 01. The wireless transmission module 5 and the signal acquisition module 4 may be abutted in a direction away from the signal acquisition module 4 and away from the inner cavity 01, for example, the wireless transmission module 5 is embedded on the signal acquisition module 4, or the signal acquisition module 4 is embedded on the wireless transmission module 5.

Of course, the wireless transmission module 5 and the signal acquisition module 4 may be distributed in other manners, for example, the wireless transmission module 5 and the signal acquisition module 4 are sleeved and connected, which is not limited in the embodiment of the present application.

The signal acquisition module 4 and the wireless transmission module 5 need power supply, and the power supply of the signal acquisition module 4 and the wireless transmission module 5 can be the electric core 2 or the power supply outside the battery shell 1, which is not limited in the embodiment of the application.

The above-described battery case 1, signal acquisition module 4, and wireless transmission module 5 may all be referred to as components of a battery management assembly.

The battery management component provided by the embodiment of the application is used for acquiring the core signal through the signal acquisition module 4, and wirelessly communicates with the outside through the wireless transmission module 5 electrically connected with the signal acquisition module 4, so that the core signal is wirelessly transmitted, and compared with the prior art that the core signal is transmitted through the signal wire harness, the installation space required by the signal acquisition module 4 and the wireless transmission module 5 is smaller, the installation space required by the signal wire harness is saved, and the volume density of a battery system is effectively improved; meanwhile, the short circuit of the signal wire harness is avoided, the secondary damage caused by the short circuit of the signal wire harness in the out-of-control scene of the battery cell 2 is avoided, and the safety and reliability of the battery system are improved.

Further, at least part of the wireless transmission module 5 is located outside the outer surface of the battery case 1, or the outer end surface of the wireless transmission module 5 is flush with the outer surface of the battery case 1 to perform wireless communication with the outside. In this way, the signal sent by the wireless transmission module 5 directly reaches the outside of the battery shell 1, so that the wireless communication between the wireless transmission module 5 and the outside of the battery shell 1 is facilitated, and the reliability of the wireless communication between the wireless transmission module 5 and the outside is improved; it is also convenient to ensure the sealing of the battery case 1, thereby facilitating the ensuring of the sealing performance of the battery.

The signal acquisition module 4 and the wireless transmission module 5 are both electronic devices, and in order to meet the protection requirement of the electronic devices, the battery management assembly further comprises a protection module, and the protection module is used for protecting the wireless transmission module 5 and/or the signal acquisition module 4.

The function and specific structure of the protection module are selected according to practical situations, for example, the protection module is an insulating encapsulating layer, and the embodiment of the application is not limited to this.

The battery management assembly further includes a wireless receiving module 6 for facilitating the acquisition of the signal sent by the wireless transmitting module 5, wherein the wireless receiving module 6 is located at the outer side of the battery case 1, and the wireless receiving module 6 is in wireless communication with the wireless transmitting module 5, due to the wireless communication between the wireless transmitting module 5 and the external incoming line.

The wireless receiving module 6 receives the battery cell signal transmitted by the wireless transmitting module 5, and the wireless receiving module 6 may process the received battery cell signal, in which case the wireless receiving module 6 may be referred to as a battery management module or may be referred to as a module of a battery management system.

The specific type of the wireless receiving module 6 is selected according to the actual situation, and the embodiment of the present application is not limited thereto.

In fig. 1 to 7, the volume of the wireless transmission module 5 is larger than the volume of the signal acquisition module 4, the volume of the wireless receiving module 6 is larger than the volume of the wireless transmission module 5, and the shapes of the signal acquisition module 4, the wireless transmission module 5 and the wireless receiving module 6 are all regular patterns.

It should be noted that the sizes and shapes of the signal acquisition modules 4, the sizes and shapes of the wireless transmission modules 5, the sizes and shapes of the wireless receiving modules 6, and the relative sizes of the signal acquisition modules 4, the wireless transmission modules 5, and the wireless receiving modules 6 shown in fig. 1 to 7 are merely exemplary. In practical application, the size and shape of the signal acquisition module 4, the size and shape of the wireless transmission module 5 and the size and shape of the wireless receiving module 6 can be adjusted according to practical needs.

The battery case 1 includes a battery case 11 and a battery cover 12, and the wireless transmission module 5 may be optionally disposed on the battery case 11, the battery cover 12, or the battery post 3. To facilitate battery arrangement, the wireless transmission module 5 may optionally be disposed on the battery cover 12.

In order to explain the arrangement of the wireless transmission module 5 more specifically, the following description will be made specifically according to three embodiments.

Example 1

As shown in fig. 1 to 3, the battery management assembly provided in the first embodiment includes a battery case 1, a signal acquisition module 4 and a wireless transmission module 5.

For the specific structure and function of the battery case 1, the signal acquisition module 4 and the wireless transmission module 5, reference is made to the foregoing, and details thereof are not repeated here.

In the first embodiment, in order to ensure that the wireless transmission module 5 performs wireless communication with the outside of the battery case 1, the entire wireless transmission module 5 is located outside the outer surface of the battery case 1. In this case, the wireless transmission module 5 may be optionally provided on the battery cover 12, the battery case 11, or the battery post 3.

In the first embodiment, the wireless transmission module 5 is preferably disposed on the battery cover 12. As shown in fig. 1, the wireless transmission module 5 is disposed on the board outer face 121 of the battery cover plate 12. The end face of the wireless transmission module 5 near the end of the inner chamber 01, i.e., the wireless transmission module inner end face 52, is in contact with the board outer face 121 of the battery cover board 12.

In order to facilitate the signal acquisition module 4 to acquire the signal of the current core 2, on the one hand, it may be chosen that the entire signal acquisition module 4 is located inside the inner surface of the battery housing 1, i.e. that the entire signal acquisition module 4 is located in the inner cavity 01. In this case, the signal acquisition module 4 may be selectively provided on the inner surface of the battery case 1 or the signal acquisition module 4 may be provided on the battery cell 2.

The inner side of the inner surface of the battery case 1, that is, the side of the inner surface of the battery case 1 near the inner cavity 01.

Alternatively, the signal acquisition module 4 may be embedded in the battery case 1. In this case, one end of the signal acquisition module 4 is close to the inner cavity 01, and the other end of the signal acquisition module 4 is far from the inner cavity 01. The end face of the signal acquisition module 4 near the end of the cavity 01 may be referred to as the signal acquisition module inner end face 42, and the end face of the signal acquisition module 4 far from the end of the cavity 01 may be referred to as the signal acquisition module outer end face 41.

In the above-described structure, the signal acquisition module inner end surface 42 extends out of the inner surface of the battery case 1, the signal acquisition module inner end surface 42 is flush with the inner surface of the battery case 1, or the signal acquisition module inner end surface 42 is located between the outer surface and the inner surface of the battery case 1.

Since the signal acquisition module 4 and the wireless transmission module 5 need to be electrically connected, in order to facilitate the electrical connection between the signal acquisition module 4 and the wireless transmission module 5, the signal acquisition module 4 and the wireless transmission module 5 may be optionally disposed on the battery housing 11 or the battery cover 12. Further, the signal acquisition module 4 and the wireless transmission module 5 are both disposed at the same position on the battery case 11 or at the same position on the battery cover 12.

For ease of maintenance and replacement, the signal acquisition module 4 may optionally be removably disposed on the battery housing 11 or the battery cover 12, and/or the wireless transmission module 5 may be removably disposed on the battery housing 11 or the battery cover 12.

In order to improve the mounting efficiency and the dismounting efficiency, the signal acquisition module 4 may be selectively detachably provided on the battery case 11 or the battery cover 12 by a clip, a fastener, or the like, and/or the wireless transmission module 5 may be detachably provided on the battery case 11 or the battery cover 12 by a clip, a fastener, or the like. In this way, the production efficiency of the battery is also improved.

The specific manner of the detachable arrangement of the pair of embodiments is not limited.

As shown in fig. 1, the signal acquisition module 4 and the wireless transmission module 5 are both disposed on the battery cover 12. The signal acquisition module 4 is embedded on the battery cover plate 12, and the inner end surface 42 of the signal acquisition module extends out of the inner plate surface 122 of the battery cover plate 12.

As shown in fig. 1, the signal acquisition module 4 and the wireless transmission module 5 may be of a split type structure, and for convenience of maintenance and replacement, the signal acquisition module 4 and the wireless transmission module 5 may be selected to be detachably electrically connected. In order to improve the installation efficiency and the disassembly efficiency, the signal acquisition module 4 and the wireless transmission module 5 can be selected to realize detachable electric connection through plugging. In this way, the production efficiency of the battery is also improved. Of course, the detachable electric connection may be implemented in other ways, and the specific manner of the pair of detachable electric connections in this embodiment is not limited.

As shown in fig. 2, the signal acquisition module 4 and the wireless transmission module 5 may be in an integrated structure, i.e., the signal acquisition module 4 and the wireless transmission module 5 are integrated into one module, so that the installation of the signal acquisition module 4 and the wireless transmission module 5 is simplified, thereby simplifying the installation of the whole battery.

To facilitate sealing of the interior space 01, in particular in the case of a pressure difference between the interior and the exterior of the battery housing, a sealed connection of the wireless transmission module 5 and the battery housing 1 may be selected. Correspondingly, the signal acquisition module 4 is also in sealed connection with the battery case 1, and the specific mode of the sealed connection is selected according to practical situations, which is not limited in this embodiment.

The entire wireless transmission module 5 is located outside the outer surface of the battery case 1, and may be implemented by the structure shown in fig. 1 and 2, or may be implemented by other means. As shown in fig. 3, the signal acquisition module outer end surface 41 of the signal acquisition module 4 extends out of the board outer face 121 of the battery cover 12, and the wireless transmission module 5 is provided on the signal acquisition module 4. Of course, the signal acquisition module 4 may alternatively be disposed on the battery case 11, with the signal acquisition module outer end surface 41 extending beyond the case outer surface 111 of the battery case 11.

Example two

As shown in fig. 4 and 5, the battery management assembly provided in the second embodiment is different from the battery management assembly provided in the first embodiment mainly in that: the relative positions of the wireless transmission module 5 and the battery case 1 are different.

In the second embodiment, the wireless transmission module 5 is embedded in the battery case 1. As shown in fig. 4 and 5, the wireless transmission module 5 is embedded on the battery cover 12.

The inner end surface 52 of the wireless transmission module 5 is closer to the inner cavity 01 than the outer surface 121 of the battery cover 12. As shown in fig. 4, the wireless transmission module inner end face 52 may alternatively be located between the panel outer face 121 and the panel inner face 122 of the battery cover 12; alternatively, the wireless transmission module inner face 52 may be selected to be flush with the panel inner face 122 of the battery cover 12; alternatively, as shown in fig. 5, the wireless transmission module inner end face 52 extends beyond the panel inner face 122 of the battery cover 12, i.e., the wireless transmission module inner end face 52 is located inside the panel inner face 122.

In the second embodiment, the signal acquisition module 4 may alternatively be disposed on the battery cover 12, for example, the signal acquisition module 4 and the wireless transmission module 5 are disposed at the same position of the battery cover 12. The outer end surface 41 of the signal acquisition module 4 contacts with the inner end surface 52 of the wireless transmission module, and the relative positional relationship between the inner end surface 42 of the signal acquisition module 4 and the inner surface 122 of the board is selected according to practical situations.

As shown in fig. 4, in the case where the wireless transmission module inner end surface 52 is located between the panel outer surface 121 and the panel inner surface 122 of the battery cover plate 12, it is optional that the signal acquisition module inner end surface 42 is flush with the panel inner surface 122, or that the signal acquisition module inner end surface 42 extends out of the panel inner surface 122 (the signal acquisition module inner end surface 42 is located inside the panel inner surface 122)

As shown in fig. 5, in the case where the wireless transmission module inner end surface 52 protrudes from the panel inner surface 122 of the battery cover 12, the signal acquisition module inner end surface 42 protrudes from the panel inner surface 122 (the signal acquisition module inner end surface 42 is located inside the panel inner surface 122).

In other cases, such as where the wireless transmission module inner face 52 is flush with the panel inner face 122 of the battery cover 12, the signal acquisition module inner face 42 extends beyond the panel inner face 122 (the signal acquisition module inner face 42 is located inboard of the panel inner face 122).

In the second embodiment, the wireless transmission module 5 may be alternatively embedded in the battery case 11. In this case, the signal acquisition module 4 may be selectively provided on the battery case 11.

For other structures in the second embodiment, reference may be made to the foregoing, and the second embodiment is not repeated.

Example III

As shown in fig. 4 and 5, the battery management assembly provided in the third embodiment is different from the battery management assembly provided in the second embodiment mainly in that: the wireless transmission modules 5 are arranged in different ways.

In the third embodiment, the battery cover 12 is provided with a connecting member 7, the wireless transmission module 5 is provided on the connecting member 7, and/or the signal acquisition module 4 is provided on the connecting member 7.

In order to simplify the wireless transmission module 5 and the signal acquisition module 4, it is optional that both the wireless transmission module 5 and the signal acquisition module 4 are provided to the connection member 7.

The connection member 7 and the battery cover 12 may be of a unitary structure or a split structure. In the case where the connection member 7 and the battery cover 12 are of a split structure, the connection of the connection member 7 and the battery cover 12 is not detachable or detachable. For ease of maintenance and replacement, the connection member 7 may optionally be detachably provided to the battery cover plate 12. In order to improve the mounting efficiency and the dismounting efficiency, the connection member 7 may be selectively detachably provided to the battery cover plate 12 by a snap-fit or a fastener or the like, and thus, the production efficiency of the battery is also improved. Of course, the connecting member 7 may be detachably provided to the battery cover 12 in other manners, which is not limited in the third embodiment.

The specific structure and size of the connecting member 7 are selected according to the actual situation. In order to facilitate the installation of the wireless transmission module 5 and the signal acquisition module 4, the connection member 7 may be chosen as a connection sleeve, which is sheathed outside the signal acquisition module 4 and the wireless transmission module 5.

It will be appreciated that the battery cover plate 12 is provided with mounting holes in which the connection sleeves are disposed. In order to ensure the sealing of the interior space 01, the connecting sleeve is connected in a sealing manner to the battery cover 12.

In practical cases, the connecting member 7 may be selected to have other structures, and this is not limited in the third embodiment.

The end face of the connecting member 7, which is close to the inner cavity 01 and the other end is far from the inner cavity 01, may be referred to as a connecting member inner end face 72, and the end face of the connecting member 7, which is far from the inner cavity 01, may be referred to as a connecting member outer end face 71.

As shown in fig. 6 and 7, the outer end surface of the connection member 7 protrudes from the board outer surface 121 of the battery cover 12, and the wireless transmission module outer end surface 51 of the wireless transmission module 5 protrudes from the connection member outer end surface 71.

Of course, in the case where the outer end surface of the connection member 7 protrudes out of the board outer surface 121, it is also possible to select that the wireless transmission module outer end surface 51 of the wireless transmission module 5 is flush with the connection member outer end surface 71 or that the wireless transmission module outer end surface 51 of the wireless transmission module 5 is located on the side of the connection member outer end surface 71 close to the inner cavity 01.

In other embodiments, it is also possible to choose the connecting member outer end face 71 of the connecting member 7 to be flush with the plate outer face 121 of the battery cover plate 12. In this case, it is possible to select the wireless transmission module outer end face 51 of the wireless transmission module 5 to be flush with the connection member outer end face 71 or the wireless transmission module outer end face 51 of the wireless transmission module 5 to protrude from the connection member outer end face 71.

In other embodiments, it is also possible to select the connecting member outer end face 71 of the connecting member 7 to be located on the side of the plate outer face 121 of the battery cover plate 12 close to the inner cavity 01. In this case, the wireless transmission module outer end face 51 of the wireless transmission module 5 protrudes beyond the connection member outer end face 71.

As shown in fig. 6 and 7, the connecting member inner end face 72 of the connecting member 7 protrudes beyond the panel inner face 122 of the battery cover 12, and the signal acquisition module inner end face 42 of the signal acquisition module 4 is located on the side of the connecting member inner end face 72 remote from the inner cavity 01. It will be appreciated that the connecting member inner end 72 is closer to the cell 2 than the signal acquisition module inner end 42.

Of course, in the case where the connection member inner end face 72 of the connection member 7 protrudes from the panel inner face 122 of the battery cover 12, it is also possible to select the signal acquisition module inner end face 42 of the signal acquisition module 4 to protrude from the connection member inner end face 72 or the signal acquisition module inner end face 42 of the signal acquisition module 4 to be flush with the connection member inner end face 72.

In other embodiments, it is also possible to choose the connecting member inner end face 72 of the connecting member 7 to be flush with the panel inner face 122 of the battery cover 12. In this case, the signal acquisition module inner end surface 42 of the signal acquisition module 4 may be selected to be located on a side of the connection member inner end surface 72 away from the inner cavity 01, the signal acquisition module inner end surface 42 of the signal acquisition module 4 may extend out of the connection member inner end surface 72, or the signal acquisition module inner end surface 42 of the signal acquisition module 4 may be flush with the connection member inner end surface 72.

In other embodiments, it is also possible to select the connecting member inner end face 72 of the connecting member 7 to be located on the side of the panel inner face 122 of the battery cover 12 remote from the interior space 01. In this case, the signal acquisition module inner end surface 42 of the signal acquisition module 4 may be selected to be located on a side of the connection member inner end surface 72 away from the inner cavity 01, the signal acquisition module inner end surface 42 of the signal acquisition module 4 may extend out of the connection member inner end surface 72, or the signal acquisition module inner end surface 42 of the signal acquisition module 4 may be flush with the connection member inner end surface 72.

In the third embodiment, the connection member 7 may be optionally provided on the battery case 11, and is not limited to the battery cover 12. In the case where the connection member 7 is provided on the battery case 11, the relative positional relationship and the connection relationship of the connection member 7 and the battery case 11 may be referred to as the relative positional relationship of the connection member 7 and the battery cover 12, and will not be described again here.

For other structures in the third embodiment, reference may be made to the foregoing, and the third embodiment is not repeated.

Because the above battery management assembly has the above technical effects, the battery provided by the embodiment of the present application includes the above battery management assembly, and the battery system provided by the embodiment of the present application includes the above battery, both the battery system and the battery provided by the embodiment of the present application have corresponding technical effects, and are not described herein again.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (17)

1. A battery management assembly, comprising:

the battery shell is provided with an inner surface and an outer surface which are distributed oppositely, and the inner surface of the battery shell encloses an inner cavity for placing the battery cell;

the signal acquisition module is used for acquiring signals of the battery cell;

the wireless transmission module is electrically connected with the signal acquisition module, and is at least partially positioned on the outer side of the outer surface of the battery shell, or the outer end surface of the wireless transmission module is flush with the outer surface of the battery shell so as to carry out wireless communication with the outside.

2. The battery management assembly of claim 1 wherein the entire wireless transmission module is located outside of the outer surface of the battery housing.

3. The battery management assembly of claim 1 wherein the wireless transmission module is embedded on the battery housing.

4. The battery management assembly of claim 1 wherein the entire signal acquisition module is located inside an interior surface of the battery housing.

5. The battery management assembly of claim 1, wherein the signal acquisition module is embedded on the battery housing;

the inner end face of the signal acquisition module extends out of the inner surface of the battery shell, the inner end face of the signal acquisition module is flush with the inner surface of the battery shell, or the inner end face of the signal acquisition module is located between the outer surface and the inner surface of the battery shell.

6. The battery management assembly of claim 1, wherein the battery housing is provided with a connection member, the wireless transmission module is provided to the connection member, and/or the signal acquisition module is provided to the connection member.

7. The battery management assembly of claim 6 wherein the outer end face of the wireless transmission module extends beyond the outer end face of the connecting member or the outer end face of the wireless transmission module is flush with the outer end face of the connecting member or the outer end face of the wireless transmission module is located on a side of the outer end face of the connecting member adjacent to the inner cavity;

and/or the inner end surface of the signal acquisition module extends out of the inner end surface of the connecting member, the inner end surface of the signal acquisition module is flush with the inner end surface of the connecting member, or the inner end surface of the signal acquisition module is positioned on one side, far away from the inner cavity, of the inner end surface of the connecting member.

8. The battery management assembly of claim 6 wherein the outer end surface of the connecting member extends beyond the outer surface of the battery housing, the outer end surface of the connecting member is flush with the outer surface of the battery housing, or the outer end surface of the connecting member is located on a side of the outer surface of the battery housing that is adjacent to the interior cavity;

and/or the inner end surface of the connecting member extends out of the inner surface of the battery shell, the inner end surface of the connecting member is flush with the inner surface of the battery shell, or the inner end surface of the connecting member is positioned on one side of the inner surface of the battery shell away from the inner cavity.

9. The battery management assembly of claim 6, wherein the battery management assembly,

the connecting member and the battery case are of an integral structure or a split structure;

and/or the connecting component is a connecting sleeve, and the connecting sleeve is sleeved outside the signal acquisition module and the wireless transmission module.

10. The battery management assembly of claim 6 wherein the connection member and the battery housing are removably connected.

11. The battery management assembly of claim 1, wherein,

the wireless transmission module is detachably arranged on the battery shell;

and/or the wireless transmission module is detachably connected with the signal acquisition module;

and/or, the signal acquisition module is detachably arranged on the battery shell.

12. The battery management assembly of claim 1 wherein the wireless transmission module is sealingly connected to the battery housing;

and/or, the signal acquisition module is in sealing connection with the battery shell;

and/or the wireless transmission module and the signal acquisition module are of an integrated structure or a split structure.

13. The battery management assembly of claim 1, further comprising a protection module for protecting the wireless transmission module and/or the signal acquisition module.

14. The battery management assembly of claim 1 wherein the battery housing comprises a battery housing, a battery cover sealingly connected to the battery housing; the wireless transmission module and the signal acquisition module are both arranged on the battery cover plate.

15. The battery management assembly of any one of claims 1-14 further comprising a wireless receiving module located outside of the battery housing, the wireless receiving module in wireless communication with the wireless transmitting module.

16. A battery comprising the battery management assembly of any one of claims 1-15.

17. A battery system comprising the battery of claim 16.