CN209454592U - The protection control circuit of battery pack - Google Patents
The protection control circuit of battery pack Download PDFInfo
- Publication number
- CN209454592U CN209454592U CN201822267782.1U CN201822267782U CN209454592U CN 209454592 U CN209454592 U CN 209454592U CN 201822267782 U CN201822267782 U CN 201822267782U CN 209454592 U CN209454592 U CN 209454592U
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- Prior art keywords
- contactor
- battery pack
- circuit
- control circuit
- protection control
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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
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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Abstract
The utility model provides a kind of protection control circuit of battery pack, and the protection control circuit of battery pack includes: battery pack, the first main circuit, the second main circuit and battery management system.One end of first main circuit is connected with the positive terminal of battery pack, and the other end of the first main circuit is connected with load；One end of second main circuit is connected with the negative pole end of battery pack, and the other end of the second main circuit is connected with load；Battery management system and load, battery pack are in parallel, and battery management system detection loads the voltage value with battery pack and judges whether the voltage of load reaches target zone value to control the whether upper high-voltage electricity of protection control circuit according to testing result.Thus; by the way that battery management system is arranged; the whether upper high-voltage electricity of protection control circuit can be preferably controlled, can solve the adhesion problems for leading to protect each components in control circuit since preliminary filling is insufficient, so as to reduce the maintenance cost of customer's complaint and vehicle.
Description
Technical field
The utility model relates to battery pack technical field, in particular to the protection control circuit of a kind of battery pack.
Background technique
High voltage component direct current input side in part all has capacitor on electric car, on electric car when high-voltage electricity, capacitor
It is equivalent to short circuit, the moment of contactor closure, the electric current in circuit is very big, it is easy to cause contactor and high tension apparatus to damage,
In order to reduce the turn-on current for flowing through battery and load to be connected, increases preliminary filling electrical circuit during connection, carrying out
When Vehicular charging, if charging equipment output is higher than the voltage of battery pack, more than the certain value (such as 105% of battery pack voltage
Battery pack voltage), at this time vehicle also think preliminary filling complete, be closed contactor, contactor may be excessive due to closed path
Lead to contactor adhesion.Also, when short circuit occurs for external loading, a preliminary filling this may result in resistance and burn.
Utility model content
In view of this, the utility model is directed to a kind of protection control circuit of battery pack, it is insufficient to solve preliminary filling
Lead to the adhesion problems for protecting each components in control circuit.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of protection control circuit of battery pack includes: battery pack, the first main circuit, the second main circuit and battery management system
System, one end of first main circuit are connected with the positive terminal of the battery pack, the other end of first main circuit and load
It is connected；One end of second main circuit is connected with the negative pole end of the battery pack, the other end of second main circuit and institute
Load is stated to be connected；The battery management system and the load, the battery pack are in parallel, and the battery management system detects institute
It states the voltage value of load and the battery pack and judges whether the voltage of the load reaches target zone value to tie according to detection
The whether upper high-voltage electricity of fruit control protection control circuit.
In some examples of the utility model, the target zone value is U1, and the voltage of the battery pack is U2, is met
Relational expression: 95%U2≤U1≤105%U2.
In some examples of the utility model, first main circuit has the first auxiliary circuit and the second auxiliary circuit, institute
It states the first auxiliary circuit and second auxiliary circuit is in parallel, first auxiliary circuit is provided with first contactor, the second auxiliary electricity
Road is provided with second contactor and resistance, and the second contactor is connected with the resistance, and second main circuit is provided with
Three contactors.
In some examples of the utility model, positive contactor based on the first contactor, the second contactor is
Preliminary filling contactor, negative contactor based on the third contactor.
In some examples of the utility model, the resistance is pre-charge resistance.
Compared with the existing technology, the protection control circuit of battery pack described in the utility model has the advantage that
The protection control circuit of battery pack according to the present utility model can be preferably by the way that battery management system is arranged
The whether upper high-voltage electricity of control protection control circuit, can solve causes to protect each components in control circuit since preliminary filling is insufficient
Adhesion problems, so as to reduce customer complain and vehicle maintenance cost.
The another object of the utility model is to propose a kind of protection control circuit of battery pack.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of protection control circuit of battery pack includes: battery pack, the first main circuit, the second main circuit and battery management system
System, one end of first main circuit are connected with the positive terminal of the battery pack, the other end of first main circuit and load
It is connected；One end of second main circuit is connected with the negative pole end of the battery pack, the other end of second main circuit and institute
Load is stated to be connected；The battery management system is in parallel with the load, and whether the battery management system detection load is short
Road, to control the whether upper high-voltage electricity of protection control circuit according to testing result.
In some examples of the utility model, first main circuit is provided with the first auxiliary circuit and the second auxiliary circuit,
First auxiliary circuit and second auxiliary circuit are in parallel, and first auxiliary circuit is provided with first contactor, and described second is auxiliary
Circuit is provided with second contactor and resistance, and the second contactor is connected with the resistance, and second main circuit is provided with
Third contactor.
In some examples of the utility model, positive contactor based on the first contactor, the second contactor is
Preliminary filling contactor, negative contactor based on the third contactor.
In some examples of the utility model, the resistance is pre-charge resistance.
In some examples of the utility model, the protection control circuit of the battery pack further include: controller, it is described
Controller is connected with the battery management system.
Compared with the existing technology, the protection control circuit of battery pack described in the utility model has the advantage that
The protection control circuit of battery pack according to the present utility model can be preferably by the way that battery management system is arranged
The whether upper high-voltage electricity of control protection control circuit, can burn to avoid each components in protection control circuit, so as to subtract
The maintenance cost of few vehicle.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the schematic diagram of the protection control circuit of first embodiment described in the utility model embodiment；
Fig. 2 is the schematic diagram of the protection control circuit of second embodiment described in the utility model embodiment.
Description of symbols:
Protect control circuit 10；
Battery pack 1；
First main circuit 2；First auxiliary circuit 21；Second auxiliary circuit 22；First contactor 23；Second contactor 24；Resistance
25；
Second main circuit 3；Third contactor 31；
Battery management system 4；
Load 20.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It as depicted in figs. 1 and 2, include: battery according to the protection control circuit 10 of the battery pack of the utility model embodiment
The 1, first main circuit 2 of group, the second main circuit 3 and battery management system 4.It one end of first main circuit 2 can be with battery pack 1 just
Extreme to be connected, the other end of the first main circuit 2 can be connected with load 20.It one end of second main circuit 3 can be with battery pack 1
Negative pole end is connected, and the other end of the second main circuit 3 can be connected with load 20.Battery management system 4 can be with load 20, battery
Group 1 is in parallel, that is to say, that battery management system 4 is in parallel with loading 20, meanwhile, battery management system 4 also with battery pack 1 simultaneously
Connection, battery management system 4 can detecte the voltage value of load 20 and battery pack 1, and battery management system 4 may determine that load
Whether 20 voltage reaches target zone value, and battery management system 4 can control protection control circuit 10 according to testing result is
No upper high-voltage electricity.
Wherein, for vehicle in preliminary filling, battery management system 4 detects the voltage value of load 20 and battery pack 1, then battery
Management system 4 is analyzed and processed the voltage value detected, if the voltage at 20 both ends of load does not reach target zone value,
The not upper high-voltage electricity of control circuit 10 is protected in the control of battery management system 4, if the voltage at 20 both ends of load reaches target zone value,
High-voltage electricity in the control protection control circuit 10 of battery management system 4, avoids causing to protect due to the unexpected output high pressure of fast charge stake
Each components adhesion in control circuit 10, in this way setting can preferably control the whether upper high-voltage electricity of protection control circuit 10, can
To solve the adhesion problems for causing to protect each components in control circuit 10 since preliminary filling is insufficient, protection control thereby may be ensured that
The use reliability of each components in circuit 10 processed, and then the maintenance cost of customer's complaint and vehicle can be reduced.
As a result, by setting battery management system 4, the whether upper high-voltage electricity of protection control circuit 10 can be preferably controlled,
It can solve the adhesion problems for leading to protect each components in control circuit 10 since preliminary filling is insufficient, thereby may be ensured that protection
The use reliability of each components in control circuit 10, and then the maintenance cost of customer's complaint and vehicle can be reduced.
In some embodiments of the utility model, as shown in Figure 1, the first main circuit 2 can have the first auxiliary circuit 21
With the second auxiliary circuit 22, the first auxiliary circuit 21 and the second auxiliary circuit 22 are arranged in parallel, and the first auxiliary circuit 21 can be set first
Second contactor 24 and resistance 25 has can be set in contactor 23, the second auxiliary circuit 22, and second contactor 24 can be with resistance 25
Third contactor 31 has can be set in series connection, the second main circuit 3.
Wherein, second contactor 24 can play the role of the switch control in preliminary filling circuit, and resistance 25 can play current limliting work
With.After battery management system 4 receives " high pressure powers on " signal, battery management system 4 controls third contactor 31 and is first closed, so
It is closed second contactor 24 afterwards, then preliminary filling circuit starts to carry out low current preliminary filling to major loop, when battery management system 4 detects
When reaching target zone value to 20 voltages of load, it is believed that preliminary filling success, battery management system 4 control first contactor 23 and are closed,
At this point, preliminary filling success, disconnects second contactor 24, such setting can be closed moment impact electric current mistake to avoid first contactor 23
Lead to 23 adhesion of first contactor greatly, thereby may be ensured that the functional reliability of first contactor 23.
In some embodiments of the utility model, the voltage target value range for loading 20 both ends can be U1, battery pack 1
Voltage can be U2, meet relational expression: 95%U2≤U1≤105%U2, it is understood that be, in preliminary filling, battery management
System 4 detects that the voltage (U1) of load 20 is greater than the 95% of the voltage (U2) of battery pack 1 and is less than the voltage (U2) of battery pack 1
105% when, reclose first contactor 23, the range more adduction that can make the voltage target value range of load 20 be arranged such
Reason, can be better protected from 23 adhesion of first contactor, so as to be further ensured that the functional reliability of first contactor 23.
In some embodiments of the utility model, first contactor 23 can be set based on positive contactor, second contact
Device 24 can be set to preliminary filling contactor, third contactor 31 can be set based on negative contactor, setting in this way can make first
The design of contactor 23, second contactor 24 and third contactor 31 is more reasonable, it is ensured that first contactor 23, second connect
The working performance of tentaculum 24 and third contactor 31, also, the work of main positive contactor, preliminary filling contactor and main negative contactor can
It is good by property, the service life of first contactor 23, second contactor 24 and third contactor 31 can be extended.
In some embodiments of the utility model, resistance 25 can be set to pre-charge resistance, the limit of pre-charge resistance
Stream is made good use of, and the service performance for being able to ascend resistance 25 is arranged such, can promote the working efficiency of resistance 25, also, preliminary filling
The functional reliability of resistance is good, it is not easy to damage.
As shown in Fig. 2, including: battery pack 1, according to the protection control circuit 10 of the battery pack of the utility model embodiment
One main circuit 2, the second main circuit 3 and battery management system 4.It one end of first main circuit 2 can be with the positive terminal phase of battery pack 1
Even, the other end of the first main circuit 2 can be connected with load 20.It one end of second main circuit 3 can be with the negative pole end of battery pack 1
It is connected, the other end of the second main circuit 3 can be connected with load 20.Battery management system 4 can be with 20 in parallel, cell tubes of load
Reason system 4 can detecte whether load 20 is short-circuit, and battery management system 4 can control protection control circuit 10 according to testing result
Whether above high-voltage electricity.
Wherein, vehicle is during preliminary filling, if battery management system 4 detects that short circuit, battery management occur for load 20
The not upper high-voltage electricity of control circuit 10, if battery management system 4 detects that short circuit does not occur for load 20, electricity are protected in the control of system 4
High-voltage electricity in the control protection control circuit 10 of pond management system 4, setting, which can preferably control protection control circuit 10, in this way is
No upper high-voltage electricity to avoid due to 20 short circuits of load can cause that each components in control circuit 10 is protected to burn, so as to
Reduce the maintenance cost of vehicle.
As a result, by setting battery management system 4, the whether upper high-voltage electricity of protection control circuit 10 can be preferably controlled,
It can be burnt to avoid each components in protection control circuit 10, so as to reduce the maintenance cost of vehicle.
In some embodiments of the utility model, as shown in Fig. 2, the first auxiliary circuit has can be set in the first main circuit 2
21 and second auxiliary circuit 22, the first auxiliary circuit 21 and the second auxiliary circuit 22 be arranged in parallel, the first auxiliary circuit 21 can be set
Second contactor 24 and resistance 25 has can be set in one contactor 23, the second auxiliary circuit 22, and second contactor 24 can be with resistance
25 are arranged in series, and third contactor 31 has can be set in the second main circuit 3.
Wherein, second contactor 24 can play the role of the switch control in preliminary filling circuit, and resistance 25 can play current limliting work
With.After battery management system 4 receives " high pressure powers on " signal, battery management system 4 controls third contactor 31 and is first closed, so
After reclose second contactor 24, then preliminary filling circuit start to major loop carry out low current preliminary filling, when battery management system 4 examine
When measuring the both end voltage of first contactor 23 and reaching a certain setting value (such as: 95% 1 voltage rating of battery pack), it is believed that pre-
Success is filled, battery management system 4 controls first contactor 23 and is closed, at this point, preliminary filling success, disconnects second contactor 24.If
Not completing preliminary filling within a certain period of time then reports preliminary filling to fail, and battery management system 4 controls second contactor 24, third contactor
31 disconnect, and vehicle can proceed with preliminary filling after re-powering.
In some embodiments of the utility model, first contactor 23 can based on positive contactor, second contactor 24
It can be preliminary filling contactor, third contactor 31 negative contactor, in this way setting can make first contactor 23, second based on
The design of contactor 24 and third contactor 31 is more reasonable, it is ensured that first contactor 23, second contactor 24 and third
The working performance of contactor 31, also, the functional reliability of main positive contactor, preliminary filling contactor and main negative contactor is good, can be with
Extend first contactor 23, the service life of second contactor 24 and third contactor 31.
In some embodiments of the utility model, resistance 25 can be set to pre-charge resistance, the limit of pre-charge resistance
Stream is made good use of, and the service performance for being able to ascend resistance 25 is arranged such, can promote the working efficiency of resistance 25, also, preliminary filling
The functional reliability of resistance is good, it is not easy to damage.
In some embodiments of the utility model, protection control circuit 10 can also include: controller, and controller can be with
It is connected with battery management system 4.Wherein, for vehicle during preliminary filling, if battery management system 4 detects load, 20 generation is short
Road, battery management system 4 controls second contactor 24 and first contactor 23 disconnects, while 4 reporting fault of battery management system
To controller, failure is removed manually, does not allow upper high pressure before fault clearance, and setting in this way can preferably protect protection control
Circuit 10 so as to be further ensured that the functional reliability of protection control circuit 10, and then can be better protected from resistance 25
It burns.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of protection control circuit of battery pack characterized by comprising
Battery pack (1)；
One end of first main circuit (2), first main circuit (2) is connected with the positive terminal of the battery pack (1), and described first
The other end of main circuit (2) is connected with the load (20) of the battery pack (1)；
One end of second main circuit (3), second main circuit (3) is connected with the negative pole end of the battery pack (1), and described second
The other end of main circuit (3) is connected with the load (20)；
Battery management system (4), the battery management system (4) and the load (20), the battery pack (1) in parallel, institute
It states the voltage value of battery management system (4) detection load (20) and the battery pack (1) and judges the load (20)
Whether voltage reaches target zone value to control the whether upper high-voltage electricity of protection control circuit (10) according to testing result.
2. the protection control circuit of battery pack according to claim 1, which is characterized in that the target zone value is U1,
The voltage of the battery pack (1) is U2, meets relational expression: 95%U2≤U1≤105%U2.
3. the protection control circuit of battery pack according to claim 1, which is characterized in that the first main circuit (2) tool
There are the first auxiliary circuit (21) and the second auxiliary circuit (22), first auxiliary circuit (21) and second auxiliary circuit (22) are in parallel,
First auxiliary circuit (21) is provided with first contactor (23), and second auxiliary circuit (22) is provided with second contactor (24)
With resistance (25), the second contactor (24) is connected with the resistance (25), and second main circuit (3) is provided with third and connects
Tentaculum (31).
4. the protection control circuit of battery pack according to claim 3, which is characterized in that the first contactor (23) is
Main positive contactor, the second contactor (24) are preliminary filling contactor, negative contactor based on the third contactor (31).
5. the protection control circuit of battery pack according to claim 3, which is characterized in that the resistance (25) is precharge
Resistance.
6. a kind of protection control circuit of battery pack characterized by comprising
Battery pack (1)；
One end of first main circuit (2), first main circuit (2) is connected with the positive terminal of the battery pack (1), and described first
The other end of main circuit (2) is connected with load (20)；
One end of second main circuit (3), second main circuit (3) is connected with the negative pole end of the battery pack (1), and described second
The other end of main circuit (3) is connected with the load (20)；
Battery management system (4), the battery management system (4) is in parallel with the load (20), the battery management system (4)
Whether short-circuit the load (20) is detected, to control the whether upper high-voltage electricity of protection control circuit (10) according to testing result.
7. the protection control circuit of battery pack according to claim 6, which is characterized in that first main circuit (2) sets
It is equipped with the first auxiliary circuit (21) and the second auxiliary circuit (22), first auxiliary circuit (21) and second auxiliary circuit (22) are simultaneously
Connection, first auxiliary circuit (21) are provided with first contactor (23), and second auxiliary circuit (22) is provided with second contactor
(24) it connects with resistance (25), the second contactor (24) with the resistance (25), second main circuit (3) is provided with
Three contactors (31).
8. the protection control circuit of battery pack according to claim 7, which is characterized in that the first contactor (23) is
Main positive contactor, the second contactor (24) are preliminary filling contactor, negative contactor based on the third contactor (31).
9. the protection control circuit of battery pack according to claim 7, which is characterized in that the resistance (25) is precharge
Resistance.
10. the protection control circuit of battery pack according to claim 6, which is characterized in that further include: controller, it is described
Controller is connected with the battery management system (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822267782.1U CN209454592U (en) | 2018-12-29 | 2018-12-29 | The protection control circuit of battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822267782.1U CN209454592U (en) | 2018-12-29 | 2018-12-29 | The protection control circuit of battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN209454592U true CN209454592U (en) | 2019-10-01 |
Family
ID=68043274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822267782.1U Active CN209454592U (en) | 2018-12-29 | 2018-12-29 | The protection control circuit of battery pack |
Country Status (1)
| Country | Link |
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| CN (1) | CN209454592U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799860A (en) * | 2020-06-29 | 2020-10-20 | 东莞新能安科技有限公司 | Electrochemical device and power supply control method |
| CN114619915A (en) * | 2020-12-09 | 2022-06-14 | 观致汽车有限公司 | Control method, control system and fault detection method for battery pack |
| US11996722B2 (en) | 2020-06-29 | 2024-05-28 | Dongguan Poweramp Technology Limited | Electrochemical apparatus, electrical apparatus, electric vehicle, and power supply control method |
-
2018
- 2018-12-29 CN CN201822267782.1U patent/CN209454592U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799860A (en) * | 2020-06-29 | 2020-10-20 | 东莞新能安科技有限公司 | Electrochemical device and power supply control method |
| US11996722B2 (en) | 2020-06-29 | 2024-05-28 | Dongguan Poweramp Technology Limited | Electrochemical apparatus, electrical apparatus, electric vehicle, and power supply control method |
| CN114619915A (en) * | 2020-12-09 | 2022-06-14 | 观致汽车有限公司 | Control method, control system and fault detection method for battery pack |
| CN114619915B (en) * | 2020-12-09 | 2023-09-22 | 观致汽车有限公司 | Control method, control system and fault detection method for battery pack |
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