CN207116622U - A kind of battery protecting plate - Google Patents

A kind of battery protecting plate Download PDF

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Publication number
CN207116622U
CN207116622U CN201720749381.2U CN201720749381U CN207116622U CN 207116622 U CN207116622 U CN 207116622U CN 201720749381 U CN201720749381 U CN 201720749381U CN 207116622 U CN207116622 U CN 207116622U
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China
Prior art keywords
battery
module
charge
discharge
chip
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CN201720749381.2U
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Chinese (zh)
Inventor
刘清鹏
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Beijing Nakpok Power Technology Co Ltd
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Beijing Nakpok Power Technology Co Ltd
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Priority to CN201720749381.2U priority Critical patent/CN207116622U/en
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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 a kind of battery protecting plate; including plate body and the protection board circuit being arranged on plate body; the protection board circuit includes control circuit module (10), charge balancing module (20), charge switch module (30), discharge switch module (40), temperature control modules (50) and charge and discharge protecting module (70), and the control circuit module (10) is by controlling charge switch module (30) and being turned on or off for discharge switch module (40) to control the charging and discharging of battery core；Temperature control modules (50) connection charge switch module (30), heating element heater and the temperature element, according to the action of temperature control charge switch module (30) and heating element heater in battery unit.The utility model ensures the efficiency for charge-discharge of battery core by charge and discharge control and temperature control, while can carry out circuit extension according to battery core number, is easy to manufacture.

Description

A kind of battery protecting plate
Technical field
New energy field of batteries is the utility model is related to, more particularly to a kind of battery protecting plate.
Background technology
For the consideration of the energy and environment, electric automobile achieves under the common promotion of national governments and automaker Quickly development.Significant change of the electric automobile as energy-efficient automobile, undoubtedly automobile industry, subtract because it can really be realized Arrange and turn into the important development direction of automobile.Prepared however, the performance and quality of these vehicles largely rely on it Battery system performance.
In electric automobile, electrokinetic cell is used using battery system form, and battery system is by multiple battery lists Member is formed, and battery unit includes the battery core of multiple series windings.During discharge and recharge, the fortune for the battery core powered in a series arrangement Much more complicated than the situation that single battery core is powered of row operating mode.This inconsistency mainly due to each battery core charge and discharge in battery unit Caused by.The inconsistency of battery core can have a strong impact on the performance of electric automobile, therefore the detection of the operating condition to single battery core It is highly important.Protection board circuit on battery protecting plate directly monitors the overall process of battery core work, including battery charging and discharging Process management, cell voltage current monitoring.In addition, equalizing charge of battery management and cell internal temperature treatment are also It is very crucial and at present also have the problem of improving to be developed.
Therefore it provides a kind of perfect in shape and function and stable battery protecting plate and protection board circuit are to meet more battery core battery lists The needs of member are to need to solve the problems, such as at present.
Utility model content
In order to solve the above problems, present inventor has performed studying with keen determination, as a result find, make the protection board electricity on protection board Road includes control circuit module, charge and discharge protecting module, charge balancing module, charge switch module, discharge switch module and temperature Control module is spent, ensures the working condition of battery core by charge and discharge control and temperature control, so as to complete the utility model.
The purpose of this utility model is to provide a kind of battery protecting plate, wherein, the protection board includes plate body and setting In the protection board circuit on plate body, the protection board circuit includes control circuit module 10, charge balancing module 20, charge switch Module 30, discharge switch module 40, temperature control modules 50 and charge and discharge protecting module 70,
The control circuit module 10 and external power source, charge switch module 30, discharge switch module 40, temperature control mould Block 50 is connected with charge and discharge protecting module 70, its phase transmitted by receiving temperature control modules 50 and charge and discharge protecting module 70 Being turned on or off for induction signal control charge switch module 30 and discharge switch module 40, controls the charging of battery core in battery unit And electric discharge；
The charge balancing module 20 electrically connects with the multiple battery cores being connected in series in battery unit, by monitoring battery core Voltage between positive pole and negative pole controls the charging balance of each battery core；
The temperature control modules 50 connect control circuit module 10, charge switch module 30, the heating in battery unit Element and temperature element, the temperature of temperature element measure cell internal are simultaneously transferred to temperature control modules 50, temperature control Module 50 controls being turned on or off for charge switch module 30, and stopping or the fortune of heating element heater according to the temperature signal of reception OK；
The charge and discharge protecting module 70 is connected with control circuit module 10, and battery unit is sent to control circuit module 10 The voltage state signal of interior battery core, and then indicate that control circuit module 10 controls charge switch module 30 and discharge switch module 40 Be turned on or off.
According to a kind of battery protecting plate provided by the utility model, have the advantages that：
(1) protection board circuit not only includes control circuit module and charge balancing module in the utility model, also further Temperature control modules are set, ensure the working condition of battery core by charge and discharge control and temperature control, discharge and recharge effect is greatly improved Rate；
(2) each battery protection chip and each battery charging balance chip and each battery core phase being connected in series in the utility model It is corresponding, i.e., when the number of the battery core of series connection changes, protection board electricity can be completed by adjusting respective chip number The repacking on road, reduce production difficulty；
(3) the positive supply input terminal (VDD) of battery charging balance chip is connected with fast recovery two between current-limiting resistance Pole pipe, disconnected when electric current exceedes the current threshold of battery charging balance chip, the balance that charged to battery chip is protected.
Brief description of the drawings
Fig. 1 shows protection board circuit structure block diagram in the utility model；
Fig. 2 shows battery protection chip connection diagram in the utility model；
Fig. 3 shows discharge prevention terminal circuit schematic diagram in the utility model；
Fig. 4 shows charge protection terminal circuit schematic diagram in the utility model；
Fig. 5 shows charge balancing module diagram in the utility model；
Fig. 6 shows charge switch module and discharge switch module diagram in the utility model；
Fig. 7 shows voltage transformation module schematic diagram in the utility model；
Fig. 8 shows temperature test chip U41 connection diagrams in a kind of embodiment of the utility model；
Fig. 9 shows temperature test chip U42 connection diagrams in a kind of embodiment of the utility model；
Figure 10 shows temperature control chip U43 connection diagrams in a kind of embodiment of the utility model；
Figure 11 shows that temperature control signals TEM-OUT controls heating element circuit figure；
Figure 12 shows comparison signal TEM ADJ inlet circuit connection diagram.
Drawing reference numeral explanation：
10- control circuit modules；
20- charge balancing modules；
21- charge balancing units；
22- batteries charging balance chip；
30- charge switch modules；
40- discharge switch modules；
50- temperature control modules；
60- voltage transformation modules；
70- charge and discharge protecting modules；
71- battery protection chips.
Embodiment
It is described in detail below by the utility model, the characteristics of the utility model and advantage will be with these explanations And become more apparent from, clearly.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary " Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the drawings In terms of kind, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
The utility model discloses a kind of battery protecting plate, and the protection board includes plate body and the guarantor being arranged on plate body Backplate circuit.
Protection board circuit electrically connects with the battery core in battery unit, and the battery unit includes being arranged at least two rows or two Multiple battery cores more than arranging, same column battery core are connected in parallel, and colleague's battery core is connected in series.Due to same column each battery core voltage phase in parallel Together, go together series winding each battery core electric current it is identical, whole electricity can be obtained by the current potential for determining each battery core both ends of any a line The charge status of pond body system.In one embodiment of the present utility model, battery unit include be arranged in 10 rows, 20 row 200 battery cores, i.e., often row includes the battery core of 20 series connections.Battery core can be lithium ion battery or other classes in the utility model The battery of type, is not limited herein.
In the utility model, as shown in figure 1, including control circuit module for the protection board circuit for monitoring battery core activity 10th, charge balancing module 20, charge switch module 30, discharge switch module 40, temperature control modules 50 and charge and discharge protecting mould Block 70.
Wherein, the control circuit module 10 and external power source, charge switch module 30, discharge switch module 40, temperature Control module 50 is connected with charge and discharge protecting module 70, and it is passed by receiving temperature control modules 50 and charge and discharge protecting module 70 Being turned on or off for the corresponding signal control charge switch module 30 passed and discharge switch module 40, controls battery core in battery unit Charging and discharging.The control module is central processing unit.
The charge balancing module 20 electrically connects with the multiple battery cores being connected in series in battery unit, by monitoring battery core Voltage between positive pole and negative pole controls the charging balance of each battery core.
The temperature control modules 50 connect control circuit module 10, charge switch module 30, the heating in battery unit Element and temperature element, the temperature of temperature element measure cell internal are transferred to temperature control modules 50, temperature control mould Block 50 according to the temperature signal of reception control charge switch module 30 be turned on or off and the stopping of heating element heater or fortune OK.
The charge and discharge protecting module 70 is connected with control circuit module 10, and battery unit is sent to control circuit module 10 The voltage state signal of interior battery core, and then indicate that control circuit module 10 controls charge switch module 30 and discharge switch module 40 Be turned on or off.
Charge and discharge protecting module 70 includes multiple battery protection chips 71 and the electric discharge being connected with battery protection chip 71 Protection circuit and charge protection terminal circuit.As shown in Fig. 2 single battery protection chip 71 controls often capable list in being connected in series The charging and discharging of individual battery core, such as 20 battery cores (such as 20~battery core of battery core 1) being connected in series need 20 battery protection chips 71.Preferably, the device model HY2110 of battery protection chip 71.
1 pin (OD) of battery protection chip 71 is connected with discharge prevention end, and it is opened by discharge prevention terminal circuit with electric discharge Close module 40 to connect, for controlling being turned on or off for discharge switch module 40.Wherein, as shown in figure 3, discharge prevention terminal circuit Including the resistance and switch element being connected with 1 pin, the switch element can be field-effect transistor, such as n type field effect transistor. 3 pin (OC) of battery protection chip 71 are connected with charge protection end, and it passes through charge protection terminal circuit and charge switch module 30 Connection.As shown in figure 4, charge protection terminal circuit includes the resistance and switch element being connected with 3 pin, the switch element can be field Effect transistor, such as n type field effect transistor.2 pin of battery protection chip 71 are that overcurrent detection input is sub (CS), its with The negative pole connection of corresponding battery core, for determining the charging voltage and discharge voltage of battery core.5 pin of battery protection chip 71 are positive electricity Source input terminal (VDD), it is connected by the contact that is electrically connected (such as CORE20~CORE1) with the positive pole of corresponding battery core.Battery protection 6 pin of chip 71 are negative supply input terminal (VSS), and it passes through the contact that is electrically connected (such as V19~VSS) and corresponding battery core (such as battery core 20~battery core 1) negative pole be connected.The corresponding battery core refers to some battery core in the battery core that is connected in series in certain a line, such as electricity Core 20 should be connected with battery protection chip U21, then battery core 20 is battery protection chip U21 corresponding battery core.
Specifically, as shown in Figure 2 to 4, the charge and discharge protecting module 70 includes 20 battery protection chips 71, respectively Control battery core 1~20, the model HY2110 of battery protection chip 71.Battery protection chip U21~U40 1 pin (OD20~OD1) N type field effect transistor Q43~Q62 grid is connected to by resistance such as R124~R125 and R148~150 respectively.N-type field Effect transistor Q43~Q62 source electrode is connected with the positive pole of corresponding battery core, n type field effect transistor Q43~Q62 drain electrode point It is not connected by resistance such as R132 with R160~R162 and is grounded by resistance R163 and R164, between resistance R163 and R164 The contact ODCTL that is electrically connected is electrically connected point ODH by multiple controlling switches (such as Q63 and Q64) and is connected to discharge switch module 40, its In, the multiple controlling switch (such as Q63 and Q64) is triode, and its colelctor electrode is connected in series to any through resistance (such as R165) The positive pole (such as V8) of battery core.Preferably, the contact ODH that is electrically connected being connected with discharge switch module 40 passes through the voltage stabilizing two that is connected in parallel Pole pipe D2 and/or electric capacity C43 ground connection, with stable discharging voltage.
Battery protection chip U21~U40 3 pin (OC20~OC1) pass through the connection of resistance such as R82~R83 and R106~108 To n type field effect transistor Q21~Q40 grid.The positive pole of n type field effect transistor Q21~Q40 source electrode and corresponding battery core It is connected, n type field effect transistor Q21~Q40 drain electrode is connected with resistance R109~120 by resistance R90~R96 and passes through electricity Hinder R121 and R122 ground connection, between resistance R121 and R122 be electrically connected contact OCCTL by multiple controlling switches (such as Q41 and Q42) it is electrically connected point OCH and is connected to charge switch module 30, wherein, the multiple controlling switch (such as Q41 and Q42) is three poles Pipe, its colelctor electrode are connected to the positive pole (such as V8) of any battery core of series connection through resistance (such as R123).Preferably, opened with charging The contact OCH that is electrically connected that module 30 is connected is closed by the voltage-regulator diode and/or capacity earth that are connected in parallel, with constant charge electricity Pressure, avoids damage of the large change of charging voltage to control circuit module 10.
The battery of battery protection chip U21~U39 2 pin (CS ends) battery core adjacent as the series connection of corresponding battery core is protected The source electrode for the n type field effect transistor that 1 pin of chip 71 and 3 pin are connected is protected, if battery protection chip U21 2 pin are as battery The connected n type field effect transistor Q22 of chip U22 1 pin source electrode is protected, and is connected as battery protection chip U22 3 pin N type field effect transistor Q44 source electrode.Battery protection chip U40 2 pin are connected to electric discharge by the contact I CHECK that are electrically connected Switch module 40, and be connected by resistance (such as R180~R183) with total negative pole of battery unit.
As shown in figure 5, the charge balancing module 20 includes multiple charge balancing units 21, single charge balancing unit 21 The positive pole and negative pole of the corresponding battery core of electrical connection, to control the charge balancing for the single battery core being connected in series, such as 20 are connected in series Battery core (such as 20~battery core of battery core 1) need 20 charge balancing units 21.Charge balancing unit 21 includes battery charging balance Chip 22 (such as U1~U20) and the electric capacity (such as C1) electrically connected with battery charging balance chip 22, current-limiting resistance (such as R1), load Resistance (such as R4 and R7) and switch element (such as n type field effect transistor Q1), wherein, the capacitance of electric capacity is 0.01~1.0 μ F, The resistance of current-limiting resistance is 50~100 Ω, and the battery charging balance model of chip 22 is preferably HY2113.
Battery charging balance chip 22 2 pin be positive supply input terminal (VDD), its by current-limiting resistance (such as R1) with it is right The positive pole (such as J1) of battery core is answered to be connected；Battery charging balance chip 22 3 pin be negative supply input terminal (VSS), its with it is corresponding The negative pole of battery core is connected, accordingly, positive pole connected (such as 3 pin and the electricity of its adjacent battery core being connected in series simultaneously with corresponding battery core The negative pole of core 20 is connected, while is connected with the positive pole of adjacent battery core 19).Battery charging balance chip 22, which continues to monitor, is connected to 2 Voltage between pin and 3 pin controls charging balance play.6 pin of battery charging balance chip 22 are signal output terminal (OUT), it is connected with switch element, and by the conducting of controlling switch element and disconnecting control the charging of corresponding battery core open and Close, it is preferable that the grid of the 6 pin connection n type field effect transistor of the battery charging balance chip 22.Meanwhile corresponding electricity The contact that is electrically connected being connected with 5 pin of battery protection chip 71 is provided between 2 pin of the Anode and battery charging balance chip 22 of core (such as CORE20~CORE1), corresponding battery core negative pole and battery charging balance chip 22 3 pin between be provided with and battery protection core The connected contact that is electrically connected (such as V19~VSS) of 6 pin of piece 71.
Battery core under normal operating conditions, in charging process, once battery charging balance chip 22 2 pin and 3 pin it Between voltage overcharge electro-detection voltage (VCU), and this state duration exceedes charging detection time delay (TOC) more than when, the signal (such as high level signal) of its 6 pin output control switch element conductive, switching elements conductive, by electricity The voltage of core is down to overcharge detection voltage (VCU) below；When the voltage between the battery charging balance pin of chip 222 and 3 pin is less than Overcharge release voltage (VCR), the signal (such as low level signal) that its 6 pin output control switch element is closed, switch element closes Close, stop electric discharge.
In a preferred embodiment, as shown in figure 5, battery charging balance chip 22 (such as U1~U20) 2 pin and Electric capacity (such as C1) is connected between 3 pin, to be discharged after it disconnects with corresponding battery core, makes battery charging balance chip 22 in short-term It is interior to work on.It is highly preferred that it is connected with fast recovery between 2 pin and current-limiting resistance (such as R1) of battery charging balance chip 22 Diode (Fuse Thermal, such as F1), it disconnects when electric current exceedes the current threshold of battery charging balance chip 22, to electricity Charging balance chip 22 in pond is protected.
As shown in fig. 6, charge switch module 30 includes multiple charging switch elements being connected in parallel such as N-type field effect transistor Pipe Q65~Q67 and current-limiting resistance such as R166~R168.Discharge switch module 40 includes multiple discharging switch elements being connected in parallel Such as n type field effect transistor Q72~Q74 and current-limiting resistance such as R173~R175.
Specifically, multiple n type field effect transistor Q65~Q67 in parallel source electrode electrically connects in charge switch module 30 To total negative pole (J22)；N type field effect transistor Q65~Q67 grid is respectively after serial resistance R166~R168 through the contact that is electrically connected OCH is connected to the charge protection terminal circuit of charge and discharge protecting module 70；Its drain electrode is electrically connected to multiple in discharge switch module 40 The drain electrode for the n type field effect transistor Q72~Q74 being connected in parallel；Multiple N-type field effects being connected in parallel in discharge switch module 40 Answer transistor Q72~Q74 source electrode to be connected through resistance (such as R180~R183) with total negative pole, and pass through the contact I CHECK that are electrically connected It is connected to the overcurrent test side of charge and discharge protecting module 70.
Preferably, in discharge switch module 40 multiple n type field effect transistor Q72~Q74 source electrodes being connected in parallel with it is total Resistance between negative pole includes the less resistance of a resistance or the less sub- resistance of multiple resistances in parallel, it is preferably several simultaneously The less sub- resistance of resistance of connection, the number of sub- resistance are 3~10, and the resistance of sub- resistance is the Ω of 5 Ω~10.By determining State the voltage difference at sub- resistance both ends, it may be determined that by the total current of sub- resistance.When electric current is excessive, pass through charge and discharge protecting module 70 Control discharge switch module 40 disconnects, and reduces battery unit application risk.Multiple small valued resistor parallel shunts, add circuit The stability of connection, avoid high current burn-out resistance.
Multiple n type field effect transistor Q72~Q74 being connected in parallel grid is contacted limit respectively in discharge switch module 40 Leakage resistance R173~R175 is electrically connected the discharge prevention terminal circuit that point ODH is connected to charge and discharge protecting module 70.Therefore, control Circuit module 10 according to charge and discharge protecting module 70 be electrically connected contact OCH and ODH level height, you can control charge switch module 30 and discharge switch module 40 in n type field effect transistor Q65~Q67 and Q72~Q74 be turned on or off, and then control and fill Electricity and electric discharge.
It is worth noting that, the number of controlling switch in parallel in charge switch module 30 and discharge switch module 40 can not Only 3, the parallel connection of multiple controlling switches shunts charging current and discharge current, reduces charge switch module 30 and discharge switch The heat loss of module 40.
In the utility model, as shown in fig. 7, the protection board circuit also includes voltage transformation module 60.The voltage turns Mold changing block 60 is connected with external power source (84V), and it includes divider resistance (such as R190~R195 and R193), the voltage stabilizing being connected in series Diode (such as D3 and D4) and fast recovery diode (Fuse Thermal, such as F41 and F42), the power input is through partial pressure Resistance, voltage-regulator diode and fast recovery diode ground connection, and it is defeated by the contact that is electrically connected between divider resistance and voltage-regulator diode Go out VCC and VCC+12V voltages.VCC powers to functional module all in protection board circuit, as temperature control modules 50 Power input terminal voltage (such as Fig. 8~10), VCC+12V are opened or closed as temperature control signals TEM-OUT control heating element heaters The comparison voltage (as shown in figure 11) closed, preferably VCC are 5V, VCC+12V 12V.Preferably, the voltage transformation module 60 is gone back Including electric capacity, the external power source is connected with divider resistance, is grounded after electric capacity, i.e., described electric capacity and voltage-regulator diode and fast extensive Multiple diodes in parallel connection.The setting of fast recovery diode and electric capacity can effectively avoid the change of the voltage of external power source to temperature The adverse effect of control module 50.
In the utility model, as shown in Fig. 8~Figure 10, temperature control modules 50 include at least one temperature test unit and At least one temperature control unit, the temperature test unit include temperature test chip (such as U41 and U42), the temperature control Unit processed includes temperature control chip (such as U43).The number of temperature test chip and temperature control chip is according in battery unit Temperature element number determine, wherein, temperature element is thermistor, and its resistance reduces with the rise of residing temperature.Institute It is voltage comparator chip to state temperature test chip, and its model LM339, temperature control chip is inputted for double four and door chip, Its model 74LS21.
Specifically, temperature element is connected with temperature test chip in battery unit, when temperature element be 5 when, it is necessary to The number of LM339 type temperature test chips is 2, and the number of 74LS21 type temperature control chips is 1.Temperature test chip U41 1~TEM of temperature input signal TEM 4 and temperature test chip U42 temperature input signal TEM 5 are by 5 thermometric members Part is sent to temperature test chip U41 and U42, and signal magnitude environment temperature where temperature element determines.Temperature input signal 1~TEM of TEM 5 are by after compared with the comparison signal TEM ADJ on temperature test chip U41 and U42, to temperature control Coremaking piece U43 sends temperature output signal TEM-OUT1~TEM-OUT5, and temperature control chip U43 receives temperature output signal TEM-OUT1~TEM-OUT5 carries out phase and the environment temperature where each temperature output signal received shows temperature element reaches During to heating threshold value, output temperature control signal TEM-OUT control heating element heaters stop heating, and send temperature control signals TEM-OUT to temperature test chip U42, through again compared with comparison signal TEM ADJ after, by its output end (1 pin) send out The number of delivering letters controls the on and off of charging module 30 to the contact OCCTL that is electrically connected of charge protection terminal circuit.
Figure 11 is that temperature control signals TEM-OUT controls heating element circuit figure.The control circuit of heating element heater includes more Individual resistance (such as R200), at least one controlling switch such as triode Q79 and n type field effect transistor Q80.Specifically, N-type field is imitated Answer transistor Q80 drain electrode and the power output end V of heating element heater-Connection；Its source ground；Its grid is with triode Q79's Colelctor electrode is connected, and is connected through resistance R206 with the VCC+12V voltages obtained after being changed by voltage transformation module 60.Triode Q79 base stage is connected to temperature control chip U43 (by TEM-OUT ends)；Its colelctor electrode is connected to n type field effect transistor Q80 grid；Its grounded emitter.By the voltage that inputs temperature control chip U43 and VCC+12V voltage ratios compared with controlling N Type field-effect transistor Q80's is turned on or off, so as to be turned on and off heating element heater.
As shown in figure 12, comparison signal TEM ADJ on temperature test chip U41 and U42 and temperature control chip U43 Input by resistance (such as R187) with after the conversion of voltage transformation module 60 obtained VCC voltages be connected, and respectively with simultaneously Join the electric capacity (such as C44) connected and be grounded after resistance (such as R188) connection.Comparison signal TEM ADJ size (voltage) passes through it Resistance regulation between input and VCC voltages, its voltage swing determine the threshold value of heating-up temperature in battery unit.
The utility model is described in detail above in association with embodiment and exemplary example, but these are said It is bright to be interpreted as to limitation of the present utility model.It will be appreciated by those skilled in the art that without departing from the utility model spirit and In the case of scope, a variety of equivalencing, modification or improvement can be carried out to technical solutions of the utility model and embodiments thereof, These are each fallen within the scope of the utility model.The scope of protection of the utility model is determined by the appended claims.

Claims (10)

  1. A kind of 1. battery protecting plate, it is characterised in that the protection board includes plate body and the protection board circuit being arranged on plate body, The protection board circuit includes control circuit module (10), charge balancing module (20), charge switch module (30), discharge switch Module (40), temperature control modules (50) and charge and discharge protecting module (70),
    The control circuit module (10) and external power source, charge switch module (30), discharge switch module (40), temperature control Module (50) is connected with charge and discharge protecting module (70), and it is by receiving temperature control modules (50) and charge and discharge protecting module (70) being turned on or off for corresponding signal control charge switch module (30) and discharge switch module (40) transmitted, controls battery The charging and discharging of battery core in unit；
    The charge balancing module (20) electrically connects with the multiple battery cores being connected in series in battery unit, by monitoring battery core just Voltage between pole and negative pole controls the charging balance of each battery core；
    In temperature control modules (50) the connection control circuit module (10), charge switch module (30) and battery unit Heating element heater and temperature element, temperature element measure cell internal temperature simultaneously be transferred to temperature control modules (50), Temperature control modules (50) according to the temperature signal of reception control charge switch module (30) be turned on or off and heating unit The stopping or operation of part；
    The charge and discharge protecting module (70) is connected with control circuit module (10), and battery list is sent to control circuit module (10) The voltage state signal of battery core in member, and then indicate control circuit module (10) control charge switch module (30) and discharge switch Module (40) are turned on or off.
  2. 2. battery protecting plate according to claim 1, it is characterised in that the charge and discharge protecting module (70) includes multiple Battery protection chip (71) and the discharge prevention terminal circuit and charge protection terminal circuit being connected with battery protection chip (71),
    The model HY2110 of battery protection chip (71).
  3. 3. battery protecting plate according to claim 1, it is characterised in that the battery protection chip (71) includes electric discharge and protected Protect end connection terminal OD, charge protection end connection terminal OC, the sub- CS of overcurrent detection input, positive supply input terminal VDD and Negative supply input terminal VSS, battery protection chip (71) are connected by discharge prevention end connection terminal OD and charge protection end respectively Connecting terminal OC is connected with discharge prevention terminal circuit and charge protection terminal circuit,
    Wherein, discharge prevention terminal circuit includes resistance and switch element, and the switch element is n type field effect transistor；Charging Protection circuit includes resistance and switch element, and the switch element N-type switch element is field-effect transistor.
  4. 4. battery protecting plate according to claim 3, it is characterised in that discharge prevention terminal circuit passes through the contact ODH that is electrically connected Discharge switch module (40) is connected to, the contact ODH that is electrically connected being connected with discharge switch module (40) passes through the voltage stabilizing that is connected in parallel Diode and/or capacity earth；
    Charge protection terminal circuit is connected to charge switch module (30) by the contact OCH that is electrically connected, with charge switch module (30) phase The contact OCH that is electrically connected even passes through the voltage-regulator diode and/or capacity earth that are connected in parallel.
  5. 5. battery protecting plate according to claim 1, it is characterised in that the charge balancing module (20) includes multiple fill Electrical equalization unit (21), single charge balancing unit (21) correspond to the single battery core being connected in series with each other, charge balancing unit (21) battery charging balance chip (22), current-limiting resistance, load resistance and switch element are included,
    Battery charging balance chip (22) includes positive supply input terminal VDD, negative supply input terminal VSS and signal output terminal OUT, positive supply input terminal VDD are connected by current-limiting resistance with the positive pole of corresponding battery core, negative supply input terminal VSS with it is corresponding The negative pole of battery core is connected；Signal output terminal OUT is connected with switch element, is controlled by the conducting and disconnection of controlling switch element The charging of corresponding battery core is opened and closed, and electric capacity is connected between positive supply input terminal VDD and negative supply input terminal VSS,
    Wherein, the capacitance of electric capacity is 0.01~1.0 μ F, and the resistance of current-limiting resistance is 50~100 Ω, and battery charging balances chip (22) model HY2113.
  6. 6. battery protecting plate according to claim 5, it is characterised in that the positive electricity of the battery charging balance chip (22) Fast recovery diode is connected between source input terminal VDD and current-limiting resistance, it exceedes battery charging balance chip in electric current (22) disconnected during current threshold.
  7. 7. the battery protecting plate according to one of claim 1 to 6, it is characterised in that the protection board circuit also includes electricity Modular converter (60) is pressed, the voltage transformation module (60) be connected with external power source, and it includes the divider resistance of series connection, surely Diode and fast recovery diode are pressed,
    The power input is connected through divider resistance, voltage-regulator diode and fast recovery diode are grounded, and pass through divider resistance The contact output VCC and VCC+12V voltages that are electrically connected between voltage-regulator diode.
  8. 8. the battery protecting plate according to one of claim 1 to 6, it is characterised in that temperature control modules (50) bag At least one temperature test unit and at least one temperature control unit are included, the temperature test unit includes temperature test core Piece, the temperature control unit include temperature control chip,
    The temperature test chip is voltage comparator chip, and the temperature control chip is double four inputs and door chip.
  9. 9. battery protecting plate according to claim 8, it is characterised in that
    The model LM339 of the temperature test chip,
    The model 74LS21 of the temperature control chip.
  10. 10. the battery protecting plate according to one of claim 1 to 6, it is characterised in that discharge switch module (40) bag Multiple n type field effect transistors being connected in parallel are included, the source electrode of each n type field effect transistor is born through resistance and the total of battery unit Extremely it is connected,
    The resistance includes multiple sub- resistance in parallel, and the number of the sub- resistance is 3~10, and the resistance of sub- resistance is 5 Ω ~10 Ω.
CN201720749381.2U 2017-06-26 2017-06-26 A kind of battery protecting plate Expired - Fee Related CN207116622U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112428873A (en) * 2020-11-04 2021-03-02 天津恒天新能源汽车研究院有限公司 Electric tricycle lithium battery management system with heating function
CN112671061A (en) * 2020-12-15 2021-04-16 维沃移动通信有限公司 Battery protection board control system and terminal
CN113752911A (en) * 2020-06-04 2021-12-07 比亚迪股份有限公司 Energy processing device and method and vehicle
CN113904027A (en) * 2021-08-26 2022-01-07 深圳市闪盾能源科技有限公司 Battery charging and heating system and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113752911A (en) * 2020-06-04 2021-12-07 比亚迪股份有限公司 Energy processing device and method and vehicle
CN113752911B (en) * 2020-06-04 2023-06-13 比亚迪股份有限公司 Energy processing device and method and vehicle
CN112428873A (en) * 2020-11-04 2021-03-02 天津恒天新能源汽车研究院有限公司 Electric tricycle lithium battery management system with heating function
CN112671061A (en) * 2020-12-15 2021-04-16 维沃移动通信有限公司 Battery protection board control system and terminal
CN113904027A (en) * 2021-08-26 2022-01-07 深圳市闪盾能源科技有限公司 Battery charging and heating system and method

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