CN212462816U

CN212462816U - Battery charging and discharging management device and electric vehicle

Info

Publication number: CN212462816U
Application number: CN202020844552.1U
Authority: CN
Inventors: 李斌
Original assignee: Shenzhen Yichi Yundong Technology Co ltd
Current assignee: Shenzhen Yichi New Energy Technology Co.,Ltd.
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-02-02
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a battery charge-discharge management device and electric motor car, this battery charge-discharge management device includes: a voltage detection circuit for detecting voltages at both ends of the battery and outputting a voltage detection signal; a current detection circuit for detecting a current flowing through the battery and outputting a current detection signal; the communication circuit comprises a wired communication circuit and a wireless communication circuit, and the wired communication circuit is electrically connected with the charging equipment and the electric device provided with the battery through an electric connection port; the wireless communication circuit is in communication connection with the terminal; the electric control assembly is respectively connected with the voltage detection circuit, the current detection circuit and the communication circuit; and the electric control assembly is used for outputting the received voltage detection signal and current detection signal to the charging equipment, the electric device and the terminal so as to realize battery charging and discharging management. The utility model provides the high safety in utilization of battery.

Description

Battery charging and discharging management device and electric vehicle

Technical Field

The utility model relates to a battery technology field, in particular to battery charge-discharge management device and electric motor car.

Background

With the development of electric bicycles and electric automobiles, batteries are increasingly used, and the safety performance requirements of the batteries in the charging and discharging processes are also increasingly high. At present, however, the secondary battery has inherent defects, such as that it does not allow long-term overcharge and overdischarge, i.e., overcharge easily causes the active material on the battery plate to fall off, and overdischarge easily causes the active material on the battery plate to be irreversible, both of which cause the battery to fail and shorten the service life of the battery. In the electric vehicle, the charging is independently completed by the charger, and the discharging is displayed by the electricity meter to prompt the user. The working state of the charger and the performance state of the battery cannot be known in the charging process, which brings inconvenience to the maintenance of customers and the analysis of the influence of the battery use environment in each area, and the discharging process lacks necessary control means, and the service life of the battery is influenced if the user uses the battery frequently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery charge-discharge management device and electric motor car aims at improving the security of battery.

In order to achieve the above object, the utility model provides a battery charge and discharge management device, battery charge and discharge management device includes:

an electric control board;

an electrical connector disposed on the electrical control board, the electrical connector having a plurality of electrical ports; wherein at least two of the electrical connection ports are connected to a battery;

the voltage detection circuit is arranged on the electric control board and is connected with the battery through the electric connection port; the voltage detection circuit is used for detecting the voltages at two ends of the battery and outputting a voltage detection signal;

the current detection circuit is arranged on the electric control board and is connected with the battery through the electric connection port; the voltage detection circuit is used for detecting the current flowing through the battery and outputting a current detection signal;

the communication circuit is arranged on the electric control board and comprises a wired communication circuit and a wireless communication circuit, and the wired communication circuit is electrically connected with the charging equipment and the electric device provided with the battery through the electric connection port; the wireless communication circuit is in communication connection with the terminal;

the electric control assembly is arranged on the electric control board and is respectively connected with the voltage detection circuit, the current detection circuit and the communication circuit; and the electric control assembly is used for outputting the received voltage detection signal and the received current detection signal to the charging equipment, the electric device and the terminal so as to realize battery charging and discharging management.

Optionally, the battery charge and discharge management apparatus further includes:

the temperature sensor is connected with the electric control assembly;

the temperature sensor is used for detecting the temperature of the battery during charging or discharging and outputting a temperature detection signal to the electric control assembly.

Optionally, the wireless communication circuit includes:

the GPRS and GNSS system is in communication connection with the charging equipment;

the wireless communication circuit further comprises:

the system comprises a Bluetooth module and an NFC module, wherein the GPRS and the GNSS system are in communication connection with the charging equipment and the terminal.

the shell is provided with a rear shell and an upper cover, and the rear shell and the upper cover form an accommodating cavity for the electric control board to be installed;

the shell is also provided with a through hole, and the electric connection port is connected with the battery and the charging equipment through the through hole.

the fingerprint identification module, the fingerprint identification module set up in on the casing, the fingerprint identification module with automatically controlled subassembly is connected.

and the reminding circuit is connected with the electric control assembly, and the electric control assembly is also used for controlling the reminding circuit to work according to the received voltage detection signal and the current detection signal.

and the acceleration sensor is connected with the electric control assembly and is used for detecting the movement speed of the electric device.

Optionally, the electronic control assembly includes a charge management chip, a discharge management chip and a central processing unit, and the charge management chip and the discharge management chip are both connected to the battery through the electrical connection port; the central processing unit is respectively connected with the charging management chip, the discharging management chip, the voltage detection circuit, the current detection circuit and the communication circuit.

the electrostatic protection circuit is connected with the battery through an electric connection port, and the electrostatic protection circuit is also respectively connected with the charging management chip and the discharging management chip.

The utility model discloses still provide an electric motor car, include if battery charge-discharge management device.

The utility model discloses a set up the automatically controlled board in the battery charge-discharge management device to set up electric connector, voltage detection circuit, current detection circuit, communication circuit and automatically controlled subassembly on the automatically controlled board, the voltage detection circuit is connected with the battery through the electricity connection port, in order to detect the voltage at battery both ends, and output voltage detection signal; a current detection circuit connected to the battery through the electrical connection port to detect a current flowing through the battery and output a current detection signal; the wired communication circuit of the communication circuit is electrically connected with the charging equipment and the electric device provided with the battery through the electric connection port; the wireless communication circuit is in communication connection with the terminal. The electric control assembly is respectively connected with the voltage detection circuit, the current detection circuit and the communication circuit, so that the received voltage detection signal and the received current detection signal are output to the charging equipment, the electric device and the terminal, and the charging and discharging management of the battery is realized. The utility model discloses a carry out charge-discharge management to the battery, the battery charger that can effectual solution electric actuator itself does not have too many safety guarantee measures, can not fully ensure charging safety. Or the charging device and the battery do not perform electric quantity information interaction, so that the charging current/charging voltage is not matched, and the battery end has no any limiting measure, so that the great charging potential safety hazard is caused. The utility model discloses can also carry out dynamic adjustment according to the in service behavior under electric actuator's battery in the use, can effectually avoid the loss of battery capacity each side, can have that electric actuator uses power not enough. The utility model discloses can be connected with the terminal communication through communication circuit, can avoid electric actuator itself or battery because long-time the use, when having very big potential safety hazard, the unable perception of user, and the unable understanding of perception also of supervisory side leads to dangerous accumulation to produce the accident at last. And moreover, the communication circuit is in communication connection with the charging equipment, so that a proper charging place can be obtained when a user needs to charge.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of an embodiment of the battery charging and discharging management device of the present invention;

fig. 2 is a schematic circuit diagram of another embodiment of the battery charging and discharging management device of the present invention;

fig. 3 is a schematic circuit diagram of another embodiment of the battery charging and discharging management device of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Electrical connector	60	Temperature sensor
20	Voltage detection circuit	70	Reminding circuit
				30	Current detection circuit	51	Charging management chip
40	Communication circuit	52	Discharge management chip
				50	Electric control assembly	53	Central processing unit

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The utility model provides a battery charge-discharge management device.

Referring to fig. 1 to 3, in an embodiment of the present invention, the battery charging and discharging management device includes:

an electronic control board (not shown);

an electrical connector 10 disposed on the electrical control board, the electrical connector 10 having a plurality of electrical ports; wherein at least two of the electrical connection ports are connected to a battery;

a voltage detection circuit 20 disposed on the electronic control board and connected to the battery through the electrical connection port; the voltage detection circuit 20 is configured to detect voltages at two ends of the battery and output a voltage detection signal;

a current detection circuit 30 disposed on the electronic control board and connected to the battery through the electrical connection port; the voltage detection circuit 20 is configured to detect a current flowing through the battery and output a current detection signal;

the communication circuit 40 is arranged on the electric control board, the communication circuit 40 comprises a wired communication circuit 40 and a wireless communication circuit 40, and the wired communication circuit 40 is electrically connected with the charging equipment and the electric device provided with the battery through the electric connection port; the wireless communication circuit 40 is in communication connection with a terminal;

the electric control assembly 50 is arranged on the electric control board and is respectively connected with the voltage detection circuit 20, the current detection circuit 30 and the communication circuit 40; and the electronic control component 50 is configured to output the received voltage detection signal and the received current detection signal to the charging device, the electric device and the terminal, so as to implement battery charging and discharging management.

In this embodiment, the voltage detection circuit 20 may be implemented by a voltage division circuit composed of resistors, or may be implemented by a voltage sensor, and the voltage detection circuit 20 is configured to collect the voltage when the battery is charged or discharged, so as to implement real-time monitoring of the voltage value of the battery.

The current detection circuit 30 can be realized by adopting a sampling resistor or a Hall sensor, when the current detection circuit 30 is used for charging or discharging the battery, the current flowing into the battery or flowing out of the battery is collected to realize real-time monitoring of the current value of the battery, and whether the battery overflows or not can be judged by detecting the current flowing into the battery or flowing out of the battery, so that the voltage of the battery is safely monitored. In a specific embodiment, for example, when the sampling resistor is used for implementation, the current detection circuit 30 may further be provided with a high-precision AD sampling module, which collects voltages at two ends of the sampling resistor and calculates the magnitude of the real-time charging and discharging current. The current and the voltage of the battery are monitored, and the battery can be prevented from being overcharged and overdischarged for a long time, so that the problems that the active substances on a battery plate are easy to fall off due to overcharge, the active substances on the plate are easy to be irreversible due to overdischarge, the battery is invalid, and the service life of the battery is shortened are solved. And moreover, the monitoring information of the battery can be acquired by detecting the current and the voltage of the battery, and when the charging peak is determined according to the monitoring information, the power is automatically limited, the on-site electricity utilization safety is guaranteed, and a user is prompted.

The electrical connector 10 can be electrically connected to a battery and a charging device (a charging station, a charging pile), and the current detection circuit 30 and the voltage detection circuit 20 can be electrically connected to the battery and an electric device in which the battery is installed through the electrical connector 10.

The wired communication circuit 40 may be a power carrier communication circuit 40, and may be electrically connected to the electric device and the charging apparatus through a power cord. The wired communication circuit 40 may also be a communication circuit such as I2C, RS485_ RS232, etc. In some embodiments, USB Type-C or the like may also be possible.

The wireless communication circuit 40 may be a bluetooth module, an infrared transceiver module, or the like. The charging equipment comprises a charging equipment and a charging terminal, and can be used for charging the charging equipment and the charging terminal, and specifically can also be a GPRS, a GNSS system, a GSM network, a Bluetooth module, an NFC module and the like, wherein the GPRS and the GNSS system are in communication connection with the charging equipment, and the GPRS and the GNSS system are in communication connection with the charging equipment and the terminal. Through wireless communication circuit 40, can realize being connected with the terminal, for example mobile terminal such as cell-phone, intelligent bracelet, intelligent wrist-watch, panel computer to and data server such as server, high in the clouds. The electronic control component 50 sends each parameter of the battery to the remote server database through the wireless communication module (such as a GSM network, etc.), a user can monitor data such as voltage, current, temperature, and protection parameters of the battery in real time on a monitoring platform interconnected with the remote server database, and can also send data such as intelligent battery voltage, current, temperature, and protection parameters thereof to the remote server database, so that a supervision unit or an operation management unit can know the running conditions of the battery and a vehicle, and can timely assist and intervene when a problem occurs. Therefore, complete battery working data are provided for remote users, the remote users can update and record related data on line in real time through the operation of the user terminal or the monitoring platform, and the maintenance and the management of the battery are facilitated.

The electronic control component 50 sends each parameter of the battery to the mobile terminal via the wireless communication module (such as a bluetooth module) in a short distance, so that the user can obtain the state information of the battery in real time when using the electric device, such as the battery usage time, usage times, charging time, remaining capacity, and the like. Through GPRS, the position information of charging equipment (a charging station, a power change cabinet and a charging pile) near the electric device and the charging queuing/full amount/reservation condition can be obtained, and the best charging place, the distance and whether the battery can insist on the charging place or not can be output and prompted. GNSS systems can also be used to test the speed of a bicycle while it is running. So, the user can be convenient find near charging device, mend the electricity in time fast, let electric bicycle can more distance go on a journey. Or, information interaction between the electric device and the charging equipment (charging station, power change cabinet, charging pile) can be realized by means of the terminal (mobile phone, smart bracelet, smart watch, tablet computer, etc.), for example, the electric device is wirelessly connected with the mobile phone, and the mobile phone is connected with the charging equipment (charging station, power change cabinet, charging pile) through a GSM network. The electronic control component 50 can also receive a control command of the terminal through the communication circuit 40, or receive vehicle information output by the electric device through the communication circuit 40, so as to realize signal interaction. In addition, the user can know parameters such as the speed and the electric quantity of the bicycle in real time by means of a terminal (a mobile phone, an intelligent bracelet, an intelligent watch, a tablet personal computer and the like) or a display screen arranged on the bicycle.

The electronic control unit 50 may be provided with a remaining power calculating module, for example, the electronic control unit 50 calculates the remaining power by an ampere-hour integration method, and the remaining power SOC is equal to the remaining capacity/the rated capacity. The electronic control component 50 calculates the value of the residual capacity in real time, corrects the curve in real time and ensures the accuracy of the value of the residual capacity. The electronic control assembly 50 can also be in communication connection with a charging device and can be authenticated according to a set charging protocol, so that the electric bicycle with two architectures of a lead-acid battery and a lithium battery can be compatible with various electric devices, such as the electric bicycle. The charging device starts charging after authentication, and simultaneously, a charging and discharging algorithm can also be issued to the charging and discharging device through the charging pile, so that the battery is charged, and the electric control assembly 50 can also output the acquired parameters of the battery, such as maximum charging voltage, charging current and the like, to the charging device, so that the charging device selects the charging current/charging voltage matched with the battery from the charging capacity which can be provided to charge the battery. A charging curve is preset in the electronic control assembly 50 and the battery can be closed-loop controlled according to the set charging curve. During charging, the electronic control component 50 monitors the charging of the battery according to the charging processes of pre-charging, pulse fast charging, complementary charging and floating charging, and ensures that the charging voltage and current can be provided according to the characteristics of the battery. The charging curve includes parameters such as threshold voltage and current.

The electronic control assembly 50 is also provided with a plurality of voltage preset threshold points, such as a deceleration protection voltage point, a parking protection voltage point, etc. During discharging, when the voltage of the battery is lower than the set "deceleration protection voltage point", the electronic control component 50 may output the detected voltage signal to the electric device, so as to reduce the maximum speed of the electric device to half of the original speed. When the voltage of the battery is lower than the set 'parking protection voltage point', the electronic control assembly 50 can trigger the ignition lock of the electric device to be disconnected, so that the electric device is locked and then walks.

The utility model discloses a set up the automatically controlled board in the battery charge-discharge management device to set up electric connector 10, voltage detection circuit 20, current detection circuit 30, communication circuit 40 and automatically controlled subassembly 50 on the automatically controlled board, voltage detection circuit 20 is connected with the battery through the electricity connection port, in order to detect the voltage at battery both ends, and output voltage detection signal; a current detection circuit 30 connected to the battery through the electrical connection port to detect a current flowing through the battery and output a current detection signal; the wired communication circuit 40 of the communication circuit 40 is electrically connected to the charging device and the electric apparatus in which the battery is installed through the electric connection port; the wireless communication circuit 40 is communicatively connected to the terminal. The electronic control component 50 is connected to the voltage detection circuit 20, the current detection circuit 30 and the communication circuit 40, respectively, so as to output the received voltage detection signal and the received current detection signal to the charging device, the electric device and the terminal, thereby realizing battery charging and discharging management. The utility model discloses a carry out charge-discharge management to the battery, the battery charger that can effectual solution electric actuator itself does not have too many safety guarantee measures, can not fully ensure charging safety. Or the charging device and the battery do not perform electric quantity information interaction, so that the charging current/charging voltage is not matched, and the battery end has no any limiting measure, so that the great charging potential safety hazard is caused. The utility model discloses can also carry out dynamic adjustment according to the in service behavior under electric actuator's battery in the use, can effectually avoid the loss of battery capacity each side, can have that electric actuator uses power not enough. The utility model discloses can be connected with the terminal communication through communication circuit 40, can avoid electric actuator itself or battery because long-time the use, when having very big potential safety hazard, the unable perception of user, and the unable understanding of perception also of supervisory side leads to dangerous accumulation to produce the accident at last. And, through communication circuit 40 with the charging device communication connection, can also obtain suitable place of charging when the user needs to charge.

Referring to fig. 1 to 3, in an embodiment, the battery charging and discharging management apparatus further includes:

the temperature sensor 60 is connected with the electronic control assembly 50;

the temperature sensor 60 is configured to detect a temperature of the battery during charging or discharging, and output a temperature detection signal to the electronic control unit 50.

In an embodiment, the battery charging and discharging management device may further include a smoke sensor, a liquid detection sensor, and the like according to application requirements, and when detecting that a fault condition of smoke, high temperature, and liquid leakage occurs during charging or discharging of the battery, the charging or discharging is stopped, so that, for example, when the smoke sensor detects that smoke exists near the battery, the main electronic control component 50 is output. Alternatively, the temperature sensor 60 may acquire the temperature at the time of charging or discharging, and output a temperature detection signal to the electronic control unit 50 when detecting that the temperature at the time of charging or discharging the battery is too high. The electronic control component 50 outputs a corresponding detection signal to the charging device, the electric device or the terminal according to the fault of the battery, so that the charging device stops charging, or the electric device is triggered to stop working, or the signal is sent to the terminal, so that a user or a user of the monitoring platform can monitor the state of the battery electric device.

In this embodiment, the battery charging and discharging management device may be disposed on the electric device, may be disposed on the charging device, or may be disposed as an independent device. The housing may be made of a plastic material, or may be made of a metal material such as aluminum or an aluminum alloy material, and this embodiment may be implemented by using a metal material. The shell is arranged on the electric device or the charging equipment through one or more combinations of screws, bolts, riveting, welding, clamping and inserting modes. The electric control board for battery charging and discharging management is accommodated in the shell, and the rear shell and the upper cover are tightly matched to form a sealing structure. So set up, be favorable to blockking hazards such as external cold air, dust, rainwater, mosquito and fall into automatically controlled board, ensure automatically controlled subassembly 50's safe operation. In addition, the sealing structure can also transmit and absorb electromagnetic radiation generated by an external electric field, so that the electromagnetic radiation entering electronic elements in the shell is weakened, and the shell has a better electromagnetic shielding function. The sealing structure can also reflect and absorb electromagnetic interference generated by electronic elements in the shell, so that electromagnetic signals generated by an electric field of the electronic elements in the shell are shielded, and the influence of electromagnetic radiation of the electronic elements in the shell on the normal work of surrounding electrical equipment is avoided.

It can be understood that the casing is further provided with a through hole, and the power supply lead, the data lead and the like on the electric control board can be electrically connected with the battery, the charging equipment and the electric device through the through hole.

a fingerprint identification module (not shown) disposed on the housing, the fingerprint identification module being connected to the electronic control assembly 50.

The fingerprint identification module is added, a charge and discharge switch can be arranged in the fingerprint identification module, and the microprocessor and the fingerprint collector are formed. The working state is as follows: when a user inputs a fingerprint on the fingerprint collector, the microcomputer controller compares the input fingerprint with the stored fingerprint to identify the identity of the user, and when the fingerprint comparison result is correct, the battery is activated to turn on the discharge switch, so that the battery is in an available state, and the microcontroller records the use record of the user. Or when the user needs to charge, the identity of the user is identified, and when the fingerprint comparison result is correct, the battery is activated to turn on the charging switch to charge the battery. In addition, through fingerprint identification module, realize that intelligence is locked, the unblock, can also realize that battery charge and discharge management device prevents disassembling.

and the reminding circuit 70, the reminding circuit 70 is connected with the electronic control component 50, and the electronic control component 50 is further used for controlling the reminding circuit 70 to work according to the received voltage detection signal and the current detection signal. Automatically controlled subassembly 50 can monitor the state of battery, and when the battery broke down, automatically controlled subassembly 50 sends and reports the instruction and accurately extracts the audio content that needs to report, in time conveys fault information to the personnel of riding through the speaker, in time reminds the personnel of riding that the battery has been in the fault state, does not ride again, has prevented effectively because of the incident that the battery trouble caused.

an acceleration sensor (not shown) connected to the electronic control unit 50 for detecting the movement speed of the electric device.

When the acceleration sensor is added to detect that the speed of the bicycle exceeds the preset speed, the rider is reminded of speeding. In addition, the system can also prompt according to driving road conditions, for example, whether the driving road conditions go up and down can be detected through an acceleration sensor, and whether the driving road conditions need to be analyzed by combining GPS positioning or image acquisition of a camera. In this embodiment, the acceleration sensor can be realized by a triaxial acceleration sensor, and in the running process of the bicycle, the acceleration of the vehicle during running can be detected, and the inclination of the bicycle during running can also be detected. Thus, it can be determined whether the vehicle or the battery is tilted while the vehicle is running.

Referring to fig. 1 to 3, in an embodiment, the electronic control assembly 50 includes a charge management chip 51, a discharge management chip 52 and a central processor 53, and the charge management chip 51 and the discharge management chip 52 are connected to the battery through the electrical connection port; the cpu 53 is connected to the charge management chip 51, the discharge management chip 52, the voltage detection circuit 20, the current detection circuit 30, and the communication circuit 40, respectively.

In this embodiment, the charging management chip 51, the discharging management chip 52 and the central processing unit 53 may be implemented by microprocessors such as a DSP, an FPGA, a PLC, and a single chip microcomputer. The electronic control assembly 50 may further include a memory, and the central processing unit 53 is a control center of the battery charging and discharging management device, and is connected to each part of the entire battery charging and discharging management device through various interfaces and lines, and executes various functions and processes data of the battery charging and discharging management device by running or executing software programs and/or modules stored in the memory and calling data stored in the memory, thereby integrally monitoring the battery charging and discharging management device. A processor may include one or more processing units; preferably, the processor may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor. The central processing unit 53 may further integrate a battery management algorithm and a management policy module, and set a corresponding charging and discharging management policy according to the type, capacity, usage frequency, and the like of different batteries, so as to implement adaptive learning or implement charging and discharging management by acquiring a battery management algorithm remotely issued by data such as a server, a cloud, and the like through the wireless communication circuit 40.

It should be noted that, in the battery charging and discharging management device, the system structure of the device is generally complex, and it is difficult for one central processing unit 53 to coordinate such huge data throughput and functions of the acquisition and transmission, so the charging management chip 51 and the discharging management chip 52 may be provided in the device, and each task may be executed independently by using the two chips. The functions are decomposed by adopting the independent charging management chip 51 and the independent discharging management chip 52, and the central processing unit 53 completes most of the auxiliary functions of data acquisition, data processing and storage, parameter setting and display and the like. In the process of charging the battery, the central processing unit 53 may process the data fed back by each circuit module, and then transmit the processed data to the charging management chip 51, and the charging management chip 51 performs charging management control, so that the management efficiency of the battery charging and discharging management device can be improved.

and the electrostatic protection circuit 80, the electrostatic protection circuit 80 is connected with the battery through an electric connection port, and the electrostatic protection circuit 80 is also respectively connected with the charging management chip 51 and the discharging management chip 52.

In this embodiment, the electrostatic protection circuit 80 may be implemented by an ESD device or a transient suppression diode. The transient suppression diode may be disposed on a loop connecting the charging device and the battery via the electrical connector 10, may be disposed on a signal line, or may be disposed on a loop connecting the battery and the battery charge and discharge management device. The static electricity on the loop or the damage to the battery in the case of lightning stroke can be effectively avoided. Specifically, when a transient high voltage exists on the loop, under the action of the transient peak pulse current, the current flowing through the TVS rises from the original reverse leakage current ID to IR, the voltage appearing at the two poles of the TVS rises from the rated reverse turn-off voltage VWM to the breakdown voltage VBR, and the TVS is broken down. With the occurrence of the peak pulse current, the current flowing through the TVS reaches the peak pulse current IPP. The voltage at both its poles is clamped below a predetermined maximum clamping voltage. Then, the voltage of two poles of the TVS is continuously reduced along with the exponential decay of the pulse current, and finally, the TVS is restored to the initial state.

The utility model also provides an electric vehicle, which comprises the battery charging and discharging management device; the battery charging and discharging management device is electrically connected with the charging equipment and the electric device respectively.

The detailed structure of the battery charging and discharging management device can refer to the above embodiments, and is not described herein again; it can be understood that, because the utility model discloses used above-mentioned battery charge and discharge management device in the electric motor car, consequently, the utility model discloses the embodiment of electric motor car includes all technical scheme of the whole embodiments of above-mentioned battery charge and discharge management device, and the technical effect that reaches is also identical, no longer gives details here.

The above is only the optional embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all of which are in the concept of the present invention, the equivalent structure transformation of the content of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. A battery charge and discharge management device, comprising:

an electric control board;

2. The battery charge and discharge management device according to claim 1, further comprising:

the temperature sensor is connected with the electric control assembly;

3. The battery charge and discharge management apparatus of claim 1, wherein the wireless communication circuit comprises:

the wireless communication circuit further comprises:

4. The battery charge and discharge management device according to claim 1, further comprising:

5. The battery charge and discharge management device according to claim 4, further comprising:

6. The battery charge and discharge management device according to claim 1, further comprising:

7. The battery charge and discharge management device according to claim 1, further comprising:

8. The battery charging and discharging management device according to any one of claims 1 to 7, wherein the electronic control component comprises a charging management chip, a discharging management chip and a central processing unit, and the charging management chip and the discharging management chip are connected with the battery through the electric connection port; the central processing unit is respectively connected with the charging management chip, the discharging management chip, the voltage detection circuit, the current detection circuit and the communication circuit.

9. The battery charge and discharge management device according to claim 8, further comprising:

10. An electric vehicle comprising the battery charge and discharge management device according to any one of claims 1 to 9.