CN214898543U - Iron phosphate battery device for automobile - Google Patents
Iron phosphate battery device for automobile Download PDFInfo
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- CN214898543U CN214898543U CN202121192444.1U CN202121192444U CN214898543U CN 214898543 U CN214898543 U CN 214898543U CN 202121192444 U CN202121192444 U CN 202121192444U CN 214898543 U CN214898543 U CN 214898543U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses an iron phosphate battery device for an automobile, which comprises an HV battery module group, a voltage acquisition line, a temperature sensor, an intelligent controller and an HV junction box assembly; the voltage acquisition line is electrically connected with the HV storage battery module group and is used for acquiring voltage data of the HV storage battery module group; the temperature sensor is used for monitoring the temperature data of the HV battery module group; the HV junction box assembly is electrically connected with the HV storage battery module group; the HV battery module group comprises a plurality of lithium iron phosphate battery modules connected in series and parallel, and the lithium iron phosphate battery modules comprise a preset number of single lithium iron phosphate batteries connected in series. Above-mentioned scheme can use former car voltage acquisition circuit and former factory temperature sensor, has capacity density height, long cycle life, high temperature performance good, resistant overcharge overdischarge, a great deal of advantage such as security height.
Description
Technical Field
The utility model relates to a battery technology field specifically is a phosphoric acid iron battery device for car.
Background
With the development of new energy automobiles in China, the quantity of hybrid electric vehicles is continuously increased, and the loading quantity of nickel-hydrogen power batteries for automobiles is also continuously increased, wherein the nickel-hydrogen batteries are accepted by markets in terms of safety and stability, but the problems of low battery capacity density, few use cycle times, self-discharge, high manufacturing cost and the like have to be faced.
At present, a part of new energy hybrid electric vehicles are currently carried with a nickel-metal hydride power battery pack, the battery pack is formed by connecting and combining a plurality of nickel-metal hydride battery modules in series, the nominal voltage of a single nickel-metal hydride battery is 1.2V, and the module consists of 6 single nickel-metal hydride batteries, and the nominal voltage is 7.2V. The charging and discharging of the nickel-hydrogen power battery pack are controlled by the nickel-hydrogen battery intelligent unit, and when the SOC of the power battery is reduced to 40 percent and the voltage of the module is lower than 7.2V, the engine is started to charge the battery pack. The hybrid electric vehicle control system can also realize energy recovery to charge the battery pack during deceleration and braking, the engine stops working when the vehicle is decelerated or stopped, the battery pack supplies electricity to an air conditioner and other electric appliances of the vehicle body, and the engine does not work when the vehicle runs at low speed, and the motor is driven by the power battery and the vehicle is driven by the transmission of the speed change mechanism.
Therefore, the problems of low battery capacity density, few use cycle times, self-discharge, high manufacturing cost and the like of the existing new energy hybrid electric vehicle are solved on the premise of not changing the existing working composition of the existing new energy hybrid electric vehicle.
SUMMERY OF THE UTILITY MODEL
In order to realize the above-mentioned purpose, the utility model provides an iron phosphate battery device for car, including HV battery module group, voltage acquisition line, temperature sensor, intelligent control ware and HV terminal box assembly, it is low effectively to improve battery capacity density through HV battery module group, and the number of use cycles is few, from discharging, the problem that the cost is with high costs, and the replacement need not to reform transform other devices of vehicle simultaneously, reforms transform with low costsly. The technical scheme of the utility model as follows:
an iron phosphate battery device for an automobile is characterized by comprising an HV battery module group, a voltage acquisition line, a temperature sensor, an intelligent controller and an HV junction box assembly;
the voltage acquisition line is electrically connected with the HV storage battery module group and is used for acquiring voltage data of the HV storage battery module group;
the temperature sensor is used for monitoring the temperature data of the HV battery module group;
the HV junction box assembly is electrically connected with the HV storage battery module group;
the voltage acquisition line, the temperature sensor and the HV junction box assembly are all connected into the intelligent controller, and the intelligent controller is communicated with a preset vehicle-mounted computer;
the HV battery module group comprises a plurality of lithium iron phosphate battery modules connected in series and parallel, and the lithium iron phosphate battery modules comprise a preset number of single lithium iron phosphate batteries connected in series.
Preferably, the HV battery module set includes a service plug connector;
the service plug connector is connected with a plurality of lithium iron phosphate battery modules in series;
and the service plug connector is used for controlling the on-off of the series connection of the circuits of the plurality of lithium iron phosphate battery modules.
Preferably, the lithium iron phosphate battery module comprises a pair of positive terminals and a pair of negative terminals;
the pair of positive terminals are arranged on one side of the lithium iron phosphate battery;
and the pair of negative terminals are arranged at the symmetrical positions of the other side of the lithium iron phosphate battery.
Further, the positive terminal comprises a positive terminal and a positive terminal hole;
the negative wiring terminal comprises a negative wiring terminal and a negative wiring hole position;
and the connection modes of the lithium iron phosphate battery modules comprise welding and bolt fastening.
Preferably, the HV junction box assembly comprises a plurality of relays, a current monitor and a fuse;
the relays, the current monitors and the fuse wires are electrically connected in sequence;
and the relay is used for controlling the on-off of a high-voltage circuit of the HV battery module group.
The current monitor is used for monitoring current data passing through the HV junction box assembly;
the fuse is used for protecting a circuit connected into the HV junction box assembly.
Preferably, the top and the bottom of the HV battery module group are respectively provided with a mounting hole site;
the mounting hole is used for placing the temperature sensor;
the bottom of the HV battery module group is provided with a screw hole position;
and the screw hole position is used for fixing the HV battery module group through a bolt.
Further, the intelligent controller is used for collecting the voltage data, the temperature output and the current data and transmitting the voltage data, the temperature output and the current data to the preset vehicle-mounted computer;
and the preset vehicle-mounted computer controls the on-off of the relays according to the voltage data, the temperature output and the current data.
Preferably, the housing material of the lithium iron phosphate battery module comprises a metal material and a non-metal insulating material;
the single lithium iron phosphate battery is a soft package battery.
The beneficial effects of the utility model are embodied in:
1. compared with a nickel-metal hydride battery, the iron phosphate battery device for the automobile has the characteristic of more environmental protection;
2. the lithium iron phosphate battery is generally considered to be free of any heavy metal and rare metal, while the nickel-metal hydride battery needs rare metal, is non-toxic (SGS passes the certification), is pollution-free, conforms to the European RoHS (restriction of hazardous substances), and is an absolute green battery;
3. the utility model provides a phosphoric acid iron battery device for automobile, when increasing operating voltage and increasing capacity, only need simple series-parallel connection lithium iron phosphate battery module can, its transformation mode is simple and transformation cost is low;
4. compared with the traditional nickel-metal hydride battery, the nickel-metal hydride battery has the advantages of higher density, long cycle life, overcharge and overdischarge resistance, good high-temperature performance, high safety and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of an iron phosphate battery device for an automobile according to an embodiment of the present invention.
In the attached drawing, 1, a single lithium iron phosphate battery, 2, a temperature sensor, 3, a voltage acquisition line, 4, an intelligent controller, 5, an HV junction box assembly, 6, a service plug connector, 7 and a screw hole site.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
The nominal voltage of the lithium iron phosphate battery is 3.2V, the nominal voltage of the nickel-metal hydride battery is 1.2V, and although the voltages of the two batteries are different, the two batteries can be completely exchanged equally after corresponding modules of the two batteries are combined and adjusted. Firstly, a nickel-metal hydride battery module consists of six 1.2V single nickel-metal hydride batteries, the nominal voltage of one nickel-metal hydride battery module is 7.2V, the nominal voltage of two nickel-metal hydride battery modules is 14.4V, the nominal voltage of one module formed by corresponding 5 3.2V single lithium iron phosphate batteries is 16V, the 16V lithium iron phosphate module is very close to the 14.4V of the two nickel-metal hydride battery blocks, and then 5 3.2V single lithium iron phosphate modules are selected to replace two groups of modules consisting of 6 1.2V single nickel-metal hydride batteries. The charge cut-off voltage of the nickel-metal hydride battery is 1.5V, the discharge cut-off voltage is 1V, and the two nickel-metal hydride battery modules are provided with 12 single nickel-metal hydride batteries, so that the charge cut-off voltage of the two nickel-metal hydride battery modules is 18V, and the discharge cut-off voltage of the two nickel-metal hydride battery modules is 12V; the charging cut-off voltage of the lithium iron phosphate battery is 3.65V, the discharging cut-off voltage is 2.2V, the charging cut-off voltage of a module consisting of 5 single lithium iron phosphate batteries is 18.25, the discharging cut-off voltage is 11V, and the lithium iron phosphate battery has a wider charging and discharging platform than a nickel-metal hydride battery and can be completely matched.
The nickel-hydrogen hybrid battery pack consists of a plurality of nickel-hydrogen battery modules, even modules and a battery pack consisting of 6 modules, 16 modules, 18 modules, 28 modules, 30 modules, 34 modules and 40 modules; if the lithium iron phosphate modules are used for replacement, the number of the lithium iron phosphate battery module groups is half of the number of the nickel-metal hydride battery modules, namely 3 modules, 8 modules, 9 modules, 14 modules, 15 modules, 17 modules and 20 modules.
Example (b):
an iron phosphate battery device for an automobile comprises an HV battery module group 1, a voltage acquisition line 3, a temperature sensor 2, an intelligent controller 4 and an HV junction box assembly 5;
the voltage acquisition line 3, the temperature sensor 2 and the HV junction box assembly 5 are all connected to the intelligent controller 4, and the intelligent controller 4 is communicated with a preset vehicle-mounted computer;
the voltage acquisition line 3 is electrically connected with the HV battery module group 1 and is used for acquiring voltage data of the HV battery module group 1;
the top and the bottom of the HV battery module group 1 are respectively provided with a mounting hole site;
the mounting hole is used for placing the temperature sensor 2;
the bottom of the HV battery module group 1 is provided with a screw hole position 7;
and the screw hole position 7 is used for fixing the HV battery module group 1 through a bolt.
The temperature sensor 2 is used for monitoring the temperature data of the HV battery module group 1;
the installation hole position is reserved, so that the problem of installation of the original factory temperature sensor can be effectively solved, and the replacement is more concise and convenient.
The HV junction box assembly 5 is electrically connected with the HV storage battery module group 1;
the HV junction box assembly 5 comprises a plurality of relays, a current monitor and a fuse;
the relays, the current monitors and the fuse wires are electrically connected in sequence;
and the relay is used for controlling the on-off of the high-voltage circuit of the HV battery module group 1.
The current monitor is used for monitoring current data passing through the HV junction box assembly 5;
the fuse is used for protecting a circuit connected into the HV junction box assembly 5, and when overload or short circuit occurs, the fuse is disconnected so as to perform corresponding circuit protection.
The intelligent controller 4 is used for collecting the voltage data, the temperature output and the current data and transmitting the voltage data, the temperature output and the current data to the preset vehicle-mounted computer;
and the preset vehicle-mounted computer is controlled according to the voltage data, the temperature output and the current data, and comprehensively analyzes and sends a corresponding instruction to control the opening or closing of the relay of the HV junction box 5 according to the preset vehicle-mounted computer.
The HV battery module group 1 comprises a service plug connector 6;
the service plug connector 6 is connected with a plurality of lithium iron phosphate battery modules in series;
and the service plug connector 6 is used for controlling the on-off of the series connection of the circuits of the plurality of lithium iron phosphate battery modules. In high-voltage operation, the HV battery module group 1 with high voltage needs to be overhauled, the high-voltage internal series connection is disconnected only by pulling out the service plug connector 6, the circuit of the high-voltage battery is disconnected, the service plug is plugged, the internal series connection of the high-voltage battery can be recovered to be normal, and the internal series circuit is conducted.
The HV battery module group 1 comprises a plurality of lithium iron phosphate battery modules connected in series and parallel, and the lithium iron phosphate battery modules comprise a preset number of single lithium iron phosphate batteries connected in series. When the HV battery module group needs to increase voltage or increase capacity, only series-parallel operation is needed according to different actual requirements.
The lithium iron phosphate battery module comprises a pair of positive terminals and a pair of negative terminals;
the pair of positive terminals are arranged on one side of the lithium iron phosphate battery;
and the pair of negative terminals are arranged at the symmetrical positions of the other side of the lithium iron phosphate battery. The left side and the right side are divided into a positive electrode and a negative electrode, each side is provided with two binding posts, and the positive polarity and the negative polarity of the binding posts on the same side are the same.
The positive wiring terminal comprises a positive wiring terminal and a positive wiring hole position;
the negative wiring terminal comprises a negative wiring terminal and a negative wiring hole position;
the terminal can be a wiring terminal or a wiring hole according to different specific use environments.
A plurality of connected mode between the lithium iron phosphate battery module includes welding and bolt fastening, according to the difference of wiring end, can select the welding or through bolt fastening, if the wiring end is the terminal then adopts the welding mode to connect under the normal conditions, when the wiring end is the wiring hole, then fastens through the bolt.
The shell material of the lithium iron phosphate battery module comprises a metal material and a non-metal insulating material;
the monomer lithium iron phosphate battery is a soft package battery, the soft package battery has the advantage of high safety, the battery can not explode like a traditional steel shell and aluminum shell battery, and meanwhile, the battery is light in weight, large in capacity, small in internal resistance and flexible in design.
The replacement scheme does not need to change the original car connector, and can realize lossless replacement. The original vehicle nickel-metal hydride battery pack is composed of a plurality of 7.2V nickel-metal hydride battery modules in a series mode, and lithium iron phosphate modules half the number of the nickel-metal hydride battery modules are also composed in the series mode.
Because the voltage acquisition mode of the original vehicle is that voltage information of two nickel-metal hydride battery modules or more than two nickel-metal hydride battery modules is acquired, one lithium iron phosphate battery module is equivalent to 2 nickel-metal hydride battery modules, and the voltage acquisition mode is not changed, so that the voltage acquisition of the original vehicle voltage acquisition circuit can be realized.
According to the control condition of the intelligent unit of the nickel-hydrogen power battery of the original vehicle, when the SOC is reduced to 40 percent, the voltage of one single module of the nickel-hydrogen battery is lower than the nominal voltage of 7.2V, namely the voltage of two nickel-hydrogen battery modules is lower than 14.4V, an engine is started to charge the power nickel-hydrogen battery, if a module consisting of 5 lithium iron phosphate batteries is replaced, the voltage of one single lithium iron phosphate battery is 2.88V when the voltage is reduced to 14.4V, and the voltage value is above the range value of the cut-off voltage (2.2V) of the lithium iron phosphate battery in discharging, and the lithium iron phosphate battery cannot be over-discharged; the charge cut-off voltage of the nickel-metal hydride battery is 1.5V, and it can be obtained that the charge cut-off voltage of a nickel-metal hydride battery module consisting of 12 single nickel-metal hydride batteries is 18V, the charge cut-off voltage of a lithium iron phosphate battery is 3.65V, and the charge cut-off voltage of a module consisting of 5 single lithium iron phosphate batteries is 18.25V, so that overcharging is avoided. In conclusion, the lithium iron phosphate battery module is within the charge and discharge control range of the nickel-metal hydride battery intelligent unit.
Adaptive charging and discharging temperature, and ambient temperature of lithium iron phosphate charging: -10 ℃ to 55 ℃, discharge environment temperature: the charging environment temperature of the nickel-hydrogen battery is between 20 ℃ below zero and 60 ℃, the discharging environment temperature is between 0 ℃ and 50 ℃, and the nickel-hydrogen battery pack of the hybrid electric vehicle is basically arranged in a vehicle room. Because the temperature of the lithium iron phosphate is suitable for human body temperature of 24-27 ℃, the indoor temperature of the automobile is generally considered to be 24-27 ℃, and the charging and discharging working temperature of the lithium iron phosphate is very suitable in the temperature range.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (8)
1. An iron phosphate battery device for an automobile is characterized by comprising an HV battery module group, a voltage acquisition line, a temperature sensor, an intelligent controller and an HV junction box assembly;
the voltage acquisition line is electrically connected with the HV storage battery module group and is used for acquiring voltage data of the HV storage battery module group;
the temperature sensor is used for monitoring the temperature data of the HV battery module group;
the HV junction box assembly is electrically connected with the HV storage battery module group;
the voltage acquisition line, the temperature sensor and the HV junction box assembly are all connected into the intelligent controller, and the intelligent controller is communicated with a preset vehicle-mounted computer;
the HV battery module group comprises a plurality of lithium iron phosphate battery modules connected in series and parallel, and the lithium iron phosphate battery modules comprise a preset number of single lithium iron phosphate batteries connected in series.
2. The ferric phosphate battery apparatus for automotive vehicle of claim 1, wherein the HV battery module set includes a service plug connector;
the service plug connector is connected with a plurality of lithium iron phosphate battery modules in series;
and the service plug connector is used for controlling the on-off of the series connection of the circuits of the plurality of lithium iron phosphate battery modules.
3. The ferric phosphate battery device for the automobile according to claim 1, wherein the ferric phosphate lithium battery module comprises a pair of positive terminals and a pair of negative terminals;
the pair of positive terminals are arranged on one side of the lithium iron phosphate battery;
and the pair of negative terminals are arranged at the symmetrical positions of the other side of the lithium iron phosphate battery.
4. The iron phosphate battery device for the automobile according to claim 3, wherein the positive terminal comprises a positive terminal and a positive wiring hole site;
the negative wiring terminal comprises a negative wiring terminal and a negative wiring hole position;
and the connection modes of the lithium iron phosphate battery modules comprise welding and bolt fastening.
5. The iron phosphate battery device for the automobile according to claim 1, wherein the HV junction box assembly comprises a plurality of relays, a current monitor and a fuse;
the relays, the current monitors and the fuse wires are electrically connected in sequence;
the relay is used for controlling the on-off of a high-voltage circuit of the HV battery module group;
the current monitor is used for monitoring current data passing through the HV junction box assembly;
the fuse is used for protecting a circuit connected into the HV junction box assembly.
6. The iron phosphate battery device for the automobile according to claim 1, wherein the top and bottom of the HV battery module group are respectively provided with mounting holes;
the mounting hole is used for placing the temperature sensor;
the bottom of the HV battery module group is provided with a screw hole position;
and the screw hole position is used for fixing the HV battery module group through a bolt.
7. The ferric phosphate battery device for the automobile according to claim 5, wherein the intelligent controller is used for collecting the voltage data, the temperature output and the current data and transmitting the voltage data, the temperature output and the current data to the preset vehicle-mounted computer;
and the preset vehicle-mounted computer controls the on-off of the relays according to the voltage data, the temperature output and the current data.
8. The ferric phosphate battery device for the automobile as claimed in claim 1, wherein the housing material of the ferric phosphate lithium battery module comprises a metal material and a non-metal insulating material;
the single lithium iron phosphate battery is a soft package battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121192444.1U CN214898543U (en) | 2021-05-31 | 2021-05-31 | Iron phosphate battery device for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121192444.1U CN214898543U (en) | 2021-05-31 | 2021-05-31 | Iron phosphate battery device for automobile |
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| Publication Number | Publication Date |
|---|---|
| CN214898543U true CN214898543U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121192444.1U Active CN214898543U (en) | 2021-05-31 | 2021-05-31 | Iron phosphate battery device for automobile |
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| Country | Link |
|---|---|
| CN (1) | CN214898543U (en) |
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2021
- 2021-05-31 CN CN202121192444.1U patent/CN214898543U/en active Active
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