CN219163283U

CN219163283U - Relay and battery pack of integrated shunt

Info

Publication number: CN219163283U
Application number: CN202320175540.8U
Authority: CN
Inventors: 刘祖汉; 沈成宇; 侯敏; 曹辉
Original assignee: Shanghai Ruipu Energy Co Ltd; Rept Battero Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd; Rept Battero Energy Co Ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-06-09
Anticipated expiration: 2033-02-03

Abstract

The utility model discloses a relay integrated with a shunt and a battery pack. The relay integrated with the shunt comprises a shell, the shunt and a relay assembly; the relay assembly includes an electromagnetic coil; the shunt comprises a conductive part, wherein the conductive part is used for leading out measurement current; the electromagnetic coil is arranged in the shell, the conductive part is used for being attracted with the static contact of the relay when the electromagnetic coil is electrified, and is disconnected with the static contact of the relay when the electromagnetic coil is deenergized. The utility model provides a relay integrating a shunt, wherein the shunt is integrated in the relay in a mode of replacing a movable contact in the relay by the shunt, so that the space occupation ratio is reduced, and the manufacturing cost is reduced.

Description

Relay and battery pack of integrated shunt

Technical Field

The utility model relates to the technical field of battery pack integration, in particular to a relay integrated with a current divider and a battery pack.

Background

The battery pack is an important power supply device in a vehicle, and includes a shunt for extracting a voltage signal to a power management module that calculates a current of the battery pack, and a relay. The relay is used for controlling whether the battery pack outputs current to the outside.

At present, the relay and the shunt in the battery pack are generally arranged independently, however, the independent arrangement of the relay and the shunt is more compact for the originally narrow battery pack space because the relay and the shunt occupy a certain space respectively.

Disclosure of Invention

The utility model provides a relay integrated with a current divider and a battery pack, which are used for solving the problem that the space occupation is relatively large when the relay and the current divider are independently arranged in the prior art.

According to one aspect of the present utility model, there is provided a relay integrated with a shunt, comprising a housing, a shunt, and a relay assembly;

the relay assembly includes an electromagnetic coil;

the shunt comprises a conductive part, wherein the conductive part is used for leading out measurement current; the electromagnetic coil is arranged in the shell, the conductive part is used for being attracted with the static contact of the relay when the electromagnetic coil is electrified, and is disconnected with the static contact of the relay when the electromagnetic coil is deenergized.

Optionally, the shunt further comprises a circuit board; the circuit board is arranged on the conductive part; the conductive part comprises a metal alloy, and the circuit board is used for measuring the voltage of the metal alloy.

Optionally, the conductive part further includes a first metal part and a second metal part, the metal alloy is disposed between the first metal part and the second metal part, and the metal alloy is fixedly connected with the first metal part and the second metal part.

Optionally, the first metal part and the second metal part can be attracted to or disconnected from a stationary contact of the relay; the first metal part and the second metal part are used for being connected into an external circuit through the connection with the static contact of the relay when the electromagnetic coil is powered on, and disconnected with the external circuit when the electromagnetic coil is powered off.

Optionally, the relay of integrated shunt still includes the connector, the connector set up in on the shell, the shunt includes first signal line, first signal line with the circuit board is connected, the shunt includes the second signal line, the second signal line with the circuit board is connected, first signal line and the second signal line set up in the shell, all with the connector electricity is connected, first signal line with the second signal line is passed through the connector draws forth.

Optionally, the first signal line includes a voltage sampling line, the voltage sampling line is connected to the circuit board and the connector, and the voltage sampling line is used for collecting a voltage signal of the shunt.

Optionally, the second signal line includes a temperature sampling line, the temperature sampling line is connected with the circuit board and the connector, and the temperature sampling line is used for collecting the temperature signal of the shunt.

Optionally, the electromagnetic coil includes a driving coil and an iron core, the iron core is disposed in the driving coil, the driving coil is connected with an external power supply, and the iron core is used for generating electromagnetic induction according to power on or power off of the driving coil;

the shell is internally provided with a first signal line and a second signal line, the input end of the first signal line is connected with the first signal line, the output end of the first signal line is connected with the drive coil, and the first signal line is connected with the external power supply.

Optionally, the relay assembly further includes an armature assembly, the armature assembly is disposed between the electromagnetic coil and the conductive portion, and the armature assembly is configured to drive the conductive portion to engage with a stationary contact of the relay when the electromagnetic coil is powered, and drive the conductive portion to disengage from the stationary contact of the relay when the electromagnetic coil is powered off.

According to another aspect of the present utility model, there is provided a battery pack including the relay of the integrated current divider.

According to another aspect of the present utility model, there is provided a vehicle including a power management module and the battery pack; the power management module is connected with the battery pack and is used for calculating the current output by the battery pack.

The technical scheme of the embodiment of the utility model provides a relay integrated with a shunt, which comprises a shell, a shunt and a relay assembly; the relay assembly includes an electromagnetic coil; the shunt comprises a conductive part, wherein the conductive part is used for leading out measurement current; the electromagnetic coil is arranged in the shell, the conductive part is used for being attracted with the static contact of the relay when the electromagnetic coil is electrified, and is disconnected with the static contact of the relay when the electromagnetic coil is deenergized. The utility model provides a relay integrating a shunt, wherein the shunt is integrated in the relay in a mode of replacing a movable contact in the relay by the shunt, so that the integrated arrangement of two electric elements of the relay and the shunt is realized, the space occupation ratio is reduced, the manufacturing cost is reduced, and the problem that the space occupation is relatively large when the relay and the shunt are independently arranged in the prior art is solved.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a relay integrated with a shunt according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a diverter according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a relay integrated with a shunt according to another embodiment of the present utility model;

FIG. 4 is a schematic view of a relay integrated with a shunt according to another embodiment of the present utility model;

FIG. 5 is a schematic view of a relay integrated with a shunt according to another embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a vehicle according to an embodiment of the present utility model.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic structural diagram of a relay integrated with a shunt according to an embodiment of the present utility model, and as shown in fig. 1, a relay 100 integrated with a shunt includes a housing 110, a shunt 120, and a relay assembly 130. The relay assembly 130 comprises an electromagnetic coil 131, the shunt 120 comprises a conductive part 121, the conductive part 121 is used for leading out measurement current, the conductive part 121 and the electromagnetic coil 131 are arranged in the shell 110, the conductive part 121 is used for being attracted with a static contact of the relay when the electromagnetic coil 131 is powered on, and is disconnected with the static contact of the relay when the electromagnetic coil 131 is powered off.

In this embodiment, the relay integrating the shunt is a relay integrating the shunt and the relay formed by integrating the shunt in the relay. The housing 110 is a housing of the relay, and is generally made of an insulating material with high stability, so that the service life of the relay is prolonged, and the use safety of the relay is improved. The shunt 120 is an instrument for measuring a direct current, which is made according to the principle that a voltage is generated across a resistor when the direct current passes through the resistor, and includes a constant low resistance for expanding the current range. The relay assembly 130 is a combination of parts constituting a relay for realizing relevant functions of the relay in operation, including, for example, a solenoid, a stationary contact, and the like. The conductive part 121 is a conductive member, and includes a conductive material, and the conductive part 121 can be connected to or disconnected from a stationary contact of the relay, and can be connected to or disconnected from an external circuit by being connected to or disconnected from the stationary contact of the relay. The electromagnetic coil 131 is a component for converting electric energy into mechanical energy by using an electromagnetic principle to realize control, and the electromagnetic coil 131 can comprise a driving coil and an iron core in the driving coil, wherein the driving coil is connected with an external power supply, and when the electromagnetic coil 131 is powered on, the driving coil and the iron core in the driving coil form an electromagnet.

In this embodiment, the conductive portion of the shunt is used as a component of the shunt for realizing the shunt function, and can convert the current of an external circuit into voltage for measurement; on the other hand, the relay is used as a movable contact of the relay, and works in cooperation with the electromagnetic coil to realize normal work of the relay. Specifically, when the electromagnetic coil 131 of the relay is powered on, the conductive part 121 is attracted to the stationary contact in the relay, and at this time, the shunt 120 is connected to the relay along with the attraction of the conductive part 121 to the stationary contact in the relay and is connected to an external circuit through the stationary contact in the relay; after the electromagnetic coil 131 of the relay is deenergized, the conductive part 121 is disconnected from the stationary contact of the relay, and at this time, the shunt 120 is disconnected from the relay and the external circuit along with the disconnection of the conductive part 121 from the stationary contact of the relay.

It should be noted that, in the embodiment of the present application, specific structures of the conductive portion of the shunt in the relay integrated with the shunt and the electromagnetic coil and the stationary contact in the relay assembly and positions between them are not specifically limited, and only the conductive portion can be used for being attracted to the stationary contact of the relay when the electromagnetic coil is powered on, and can be disconnected from the stationary contact of the relay when the electromagnetic coil is powered off.

The relay of the integrated current divider provided by the technical scheme of the embodiment comprises a shell, the current divider and a relay assembly; the relay assembly includes an electromagnetic coil; the shunt comprises a conductive part, wherein the conductive part is used for leading out measurement current; the conductive part and the electromagnetic coil are arranged in the shell, and the conductive part is used for being attracted with the static contact of the relay when the electromagnetic coil is electrified and disconnected with the static contact of the relay when the electromagnetic coil is in power failure. The utility model provides a relay integrating a shunt, wherein the shunt is integrated in the relay in a mode of replacing a movable contact in the relay by the shunt, so that the integrated arrangement of two electric elements of the relay and the shunt is realized, the space occupation ratio is reduced, the manufacturing cost is reduced, and the problem that the space occupation is relatively large when the relay and the shunt are independently arranged in the prior art is solved.

Fig. 2 is a schematic structural diagram of a shunt according to an embodiment of the present utility model, as shown in fig. 2, the shunt 120 further includes a circuit board 210, and the circuit board 210 is disposed on the conductive portion 121; the conductive part 121 includes a metal alloy 220, and the circuit board 210 is used to measure a voltage of the metal alloy 220.

In this embodiment, the circuit board 210 is a carrier for electrical connection of electronic components, including a printed circuit board. The metal alloy 220 is used as a constant value in the shunt 120, and the metal alloy 220 has a low resistance value, so that the circuit board 220 is safer when the voltage is extracted from the two ends of the metal alloy 220, and the circuit board is prevented from being damaged due to overlarge voltage.

Referring to fig. 2, the conductive part 121 further includes a first metal part 230 and a second metal part 240, the metal alloy 220 is disposed between the first metal part 230 and the second metal part 240, and the metal alloy 220 is fixedly connected with the first metal part 230 and the second metal part 240. The first metal portion 230 and the second metal portion 240 are symmetrically distributed, the first metal portion 230 and the second metal portion 240 are made of metal, and current is transmitted by utilizing conductivity of metal, for example, copper bars are selected for the first metal portion 230 and the second metal portion 240.

Specifically, the first metal part 230 and the second metal part 240 can be engaged with or disengaged from the stationary contact of the relay; the first metal part 230 and the second metal part 240 are used for being connected to an external circuit through connection with a stationary contact of a relay when the electromagnetic coil 131 is powered, and disconnected from the external circuit through disconnection with the stationary contact of the relay when the electromagnetic coil 131 is powered off. When the first and

second metal parts

230 and 240 are connected to an external circuit through a connection with the stationary contact of the relay, since the relay may be provided in the battery pack, current in the battery pack is transferred to the external circuit through the first and

second metal parts

230 and 240, and when the first and

second metal parts

230 and 240 are disconnected from the stationary contact of the relay, the first and

second metal parts

230 and 240 are disconnected from the external circuit.

Fig. 3 is a schematic structural diagram of another relay integrated with a shunt according to an embodiment of the present utility model, as shown in fig. 3, the relay integrated with a shunt further includes a connector 310, the connector 310 is disposed on the housing 110, the shunt 120 includes a first signal line 320, the first signal line 320 is connected to the circuit board 210, the shunt 120 includes a second signal line 330, the second signal line 330 is connected to the circuit board 210, the first signal line 320 and the second signal line 330 are disposed in the housing 110, and are electrically connected to the connector 310, and the first signal line 320 and the second signal line 330 are led out through the connector 310. The connector 310 is an intermediate relay terminal as a relay connector, and includes, for example, a connection terminal, a connector, and the like. The first signal line 320 and the second signal line 330 are communication lines through which signals are transmitted. The current divider realizes the transmission of signals such as voltage of the current divider through setting a signal line.

Illustratively, the first signal line 320 includes a voltage sampling line that connects the circuit board 210 and the connector 310, the voltage sampling line being used to collect the voltage signal of the shunt 120. The second signal line 330 includes a temperature sampling line connected to the circuit board 210 and the connector 310, the temperature sampling line being used to collect the temperature signal of the shunt. The circuit board 210 includes a voltage acquisition module and a temperature acquisition module, a voltage sampling line is connected with the voltage acquisition module of the circuit board 210, the voltage sampling line transmits the acquired voltage signal to the connector 310, the temperature sampling line is connected with the temperature acquisition module of the circuit board 210, and the temperature sampling line transmits the acquired temperature signal to the connector 310.

In a possible implementation manner, fig. 4 is a schematic structural diagram of a relay of another integrated shunt according to an embodiment of the present utility model, as shown in fig. 4, where an electromagnetic coil 131 includes a driving coil 410 and an iron core 420, the iron core 420 is disposed in the driving coil 410, the iron core 420 is used for generating electromagnetic induction according to power on or power off of the driving coil 410, the relay assembly further includes an armature assembly, the armature assembly is disposed between the electromagnetic coil and the conductive portion, and the armature assembly is used for driving the conductive portion to engage with a stationary contact of the relay when the electromagnetic coil is powered on, and driving the conductive portion to disengage from the stationary contact of the relay when the electromagnetic coil is powered off.

Specifically, when the electromagnetic coil 131 of the relay is powered on, the electromagnetic coil 131 is attracted to the armature assembly, and as the armature assembly is connected with the conductive part 121, the conductive part 121 is attracted to the stationary contact in the relay under the driving of the armature assembly; after the electromagnetic coil 131 of the relay is powered off, the electromagnetic coil 131 is disconnected with an armature assembly of the relay, and the armature assembly drives the conductive part 121 to be disconnected with a static contact of the relay.

In this embodiment, the armature assembly includes an armature 440, a connecting rod 450 and a connecting piece 460, wherein the armature 440 and the connecting piece 460 are respectively located at two ends of the connecting rod 450, the armature 440 is located at one side of the connecting rod 450 close to the electromagnetic coil, the connecting piece 460 is located at one side of the connecting rod 450 close to the conductive part, the middle part of the connecting rod is connected with the housing, and the connecting piece is an insulator.

The driving coil 410 is an electric conductor, and is wound around the iron core 420 by winding the wires one by one, the wires constituting the driving coil are led out through the connector 310, and both ends of the wires are respectively connected with the positive pole and the negative pole of the external power supply. When the driving coil 410 wound on the iron core 420 is powered, the driving coil 410 and the iron core 420 form an electromagnet and are attracted to the armature of the relay, one end of the armature is arranged through the connecting rod, the end of the connecting rod, which is provided with the connecting piece, moves upwards to push the conductive part of the shunt to move upwards, the first metal part 230 and the second metal part 240 of the conductive part 121 of the shunt are attracted to the two stationary contacts 430 of the relay respectively, so that the conduction of a circuit between the two stationary contacts 430 is realized, the conductive part 121 is connected to an external circuit through the attraction of the stationary contacts 430 of the relay, namely, the shunt 120 is connected to the external circuit, the shunt 120 is in a normal working mode, the signal wire of the shunt 120 is connected to the circuit board 210 to collect related signals of the shunt, and the collected signals are output through the connector 310 by the shunt signal wire. Similarly, when the driving coil 410 wound around the iron core 420 is de-energized, the first metal part 230 and the second metal part 240 of the conductive part 121 are disconnected from the stationary contact 430 of the relay, the shunt 120 is disconnected from the external circuit, the shunt 120 is in a failure mode, and the signal line of the shunt 120 has no signal output.

In this embodiment, the wire of drive coil and the signal line of shunt pass through the connector and draw forth, have realized two electrical components's of relay and shunt integration setting, make the winding displacement of relay clean and tidy simultaneously, be convenient for operate.

In another possible implementation, the armature assembly may not be designed, and fig. 5 is a schematic structural diagram of a relay of another integrated shunt according to an embodiment of the present utility model; in the embodiment of the present application, the first metal portion 230 and the second metal portion 240 are designed as electromagnets, and the polarity of the portions of the first metal portion and the second metal portion close to the electromagnetic coil is the same as the polarity of the portions of the first metal portion and the second metal portion close to the conductive portion when the electromagnetic coil is powered, so that the electromagnetic coil and the first metal portion and the second metal portion repel each other when the battery coil is powered, so that the first metal portion and the second metal portion move upwards and are connected with the stationary contact of the relay, which is not described herein.

On the basis of the above embodiment, in order to facilitate control of the relay, in one possible implementation manner, the housing further includes a control circuit, an input end of the control circuit is connected to the first signal line and/or the second signal line, and an output end of the control circuit is connected between the driving coil and the external power supply, and is used for controlling on-off of the driving coil and the external power supply. The embodiment of the present application is only illustrated by taking fig. 5 as an example, and is not limited thereto.

Specifically, the input end of the control circuit receives the voltage signal and/or the temperature signal collected by the first signal line and/or the second signal line, and outputs a control signal to control the connection or disconnection of the driving coil and an external power supply according to the voltage signal or the temperature signal. The embodiment of the application does not limit the specific circuit form of the control circuit, taking the connection of the control circuit and the first signal wire as an example, when the control circuit detects that the voltage signal collected by the signal wire exceeds the preset voltage, a control signal is output to control the driving coil to be disconnected with an external power supply immediately or in a delayed manner; wherein, can set up control switch A between drive coil and the external power source in the relay, control signal passes through control switch A, realizes the on-off control to drive coil and external power source, and this embodiment of the application only takes this as an example, in other possible implementation modes, also can adopt other realization modes, and this embodiment of the application is not limited to this.

In this embodiment, the shunt-integrated relay 100 is applied in the battery pack 510. The battery pack 510 is a device for storing and releasing energy, and has important applications in the power supply related field. The relay of integrated shunt sets up in the battery package, and through the switching on or break off control battery package output electric energy or not output electric energy of control relay, when the output electric energy, the electric current or the temperature of battery package are measured through the shunt, have real-time detection's effect to the operating condition of battery package, are favorable to the safe operation of battery package. Meanwhile, the relay integrated with the current divider replaces a movable contact in the relay through the current divider, so that the function of the relay is realized, the space occupation ratio of the battery pack is saved, and the cost of the battery pack is reduced.

Fig. 6 is a schematic structural diagram of a vehicle according to an embodiment of the present utility model, as shown in fig. 6, the vehicle 500 includes a battery pack 510 and a power management module 520, the power management module 520 is connected to the battery pack 510, and the power management module 520 is configured to calculate a current output by the battery pack 510.

In this embodiment, the battery pack 510 is applied to a vehicle to power the vehicle. The power management module 520 can monitor the battery state in real time, manage the vehicle-mounted power battery, enhance the battery service efficiency, improve the battery service life, etc., the power management module is connected with the battery pack 510 through the connector 310 of the battery pack relay, the first signal line 320 and the second signal line 330 of the battery pack shunt are connected with the power management module 520 through the connector 310, the power management module 520 receives the voltage signal transmitted by the first signal line 320 and the temperature signal transmitted by the second signal line, the power management module 520 calculates the output current of the battery pack through the internal processor according to the received voltage signal and the fixed value resistance of the separator metal alloy, and the power management module 520 monitors the temperature of the battery pack in real time according to the received temperature signal.

In this embodiment, the battery pack is connected with the power management module, and the power management module monitors working conditions such as output current of the battery pack in real time, has guaranteed the security of battery pack for the vehicle can safe operation.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present utility model may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present utility model are achieved, and the present utility model is not limited herein.

The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. A relay integrated with a shunt, comprising a housing, a shunt, and a relay assembly;

the relay assembly includes an electromagnetic coil;

2. The shunt-integrated relay of claim 1, wherein the shunt further comprises a circuit board; the circuit board is arranged on the conductive part; the conductive part comprises a metal alloy, and the circuit board is used for measuring the voltage of the metal alloy.

3. The shunt-integrated relay of claim 2, wherein the conductive portion further comprises a first metal portion and a second metal portion, the metal alloy disposed between the first metal portion and the second metal portion, the metal alloy fixedly coupled to the first metal portion and the second metal portion.

4. The shunt-integrated relay of claim 3, wherein the first metal portion and the second metal portion are capable of engaging or disengaging with a stationary contact of the relay; the first metal part and the second metal part are used for being connected into an external circuit through the connection with the static contact of the relay when the electromagnetic coil is powered on, and disconnected with the external circuit when the electromagnetic coil is powered off.

5. The relay of claim 2, further comprising a connector disposed on the housing, the shunt including a first signal line connected to the circuit board, the shunt including a second signal line connected to the circuit board, the first signal line and the second signal line disposed within the housing and electrically connected to the connector, the first signal line and the second signal line being routed through the connector.

6. The shunt-integrated relay of claim 5, wherein the first signal line comprises a voltage sampling line connecting the circuit board and the connector, the voltage sampling line for collecting a voltage signal of the shunt.

7. The shunt-integrated relay of claim 5, wherein the second signal line comprises a temperature sampling line connecting the circuit board and the connector, the temperature sampling line for collecting a temperature signal of the shunt.

8. The shunt-integrated relay of any one of claims 5-7, wherein said electromagnetic coil comprises a drive coil and an iron core, said iron core disposed in said drive coil, said drive coil connected to an external power source, said iron core for generating electromagnetic induction according to power up or power down of said drive coil;

9. The shunt-integrated relay of claim 1, wherein the relay assembly further comprises an armature assembly disposed between the electromagnetic coil and the conductive portion, the armature assembly configured to drive the conductive portion into engagement with a stationary contact of the relay when the electromagnetic coil is energized and to drive the conductive portion out of engagement with the stationary contact of the relay when the electromagnetic coil is de-energized.

10. A battery pack comprising the shunt-integrated relay of any one of claims 1-9.