CN220742729U - Battery pack device and battery system - Google Patents
Battery pack device and battery system Download PDFInfo
- Publication number
- CN220742729U CN220742729U CN202322389383.3U CN202322389383U CN220742729U CN 220742729 U CN220742729 U CN 220742729U CN 202322389383 U CN202322389383 U CN 202322389383U CN 220742729 U CN220742729 U CN 220742729U
- Authority
- CN
- China
- Prior art keywords
- battery pack
- control module
- plug
- battery
- charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses battery package device and battery system utilizes first break-make control module, second break-make control module and third break-make control module can realize the switching of the series-parallel connection of first battery package and second battery package, and can charge and discharge through first plug under the series connection mode, realizes charging and discharging through first plug and second plug under the parallel connection mode. The battery pack device provided by the embodiment of the utility model can enable the first battery pack and the second battery pack to be in a serial connection state in a charging stage, so that charging current is limited to ensure the safety of charging, and because a cascade use mode of the two battery packs is adopted, the number of times of charging and discharging the single battery pack can be effectively reduced, and the service life of the battery pack is prolonged; in addition, the battery pack device provided by the embodiment of the utility model adopts a double-battery pack structure, so that the battery pack device is provided with a detachable foundation, and the maintenance cost can be reduced to a certain extent.
Description
Technical Field
The present utility model relates to the field of battery technologies, and in particular, to a battery pack device and a battery system.
Background
With the gradual development of the electric automobile market, the battery technology of the electric automobile is also continuously advancing. Most of the electric automobiles in the present stage use only one battery pack, and when working with one battery pack, problems such as: when the charging pile is used for charging a single battery pack, the charging current is large, severe heating and other conditions are easy to occur, and the battery pack is short in service life, high in maintenance difficulty and other problems. How to solve these problems is a urgent problem.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a battery pack device which can solve the problem of high battery pack charging current.
The utility model also provides a battery system.
A battery pack apparatus according to an embodiment of the first aspect of the present utility model includes:
a first battery pack;
a second battery pack;
the first plug is connected with the positive electrode of the first battery pack at a first connecting end and connected with the negative electrode of the second battery pack at a second connecting end;
a second plug;
the first on-off control module is connected between the negative electrode of the first battery pack and the positive electrode of the second battery pack;
the second switching control module is used for switching on and switching off a first connecting end of the positive electrode of the first battery pack and the second plug, and a second connecting end of the negative electrode of the first battery pack and the second plug;
the third disconnection control module is used for switching on and switching off the first connection end of the positive electrode of the second battery pack and the second plug, and the second connection end of the negative electrode of the second battery pack and the second plug; the first on-off control module, the second on-off control module and the third on-off control module are all connected with the battery management system.
The battery pack device provided by the embodiment of the utility model has at least the following beneficial effects:
the first on-off control module, the second on-off control module and the third on-off control module are utilized to realize the serial-parallel connection switching of the first battery pack and the second battery pack, and charge and discharge can be carried out through the first plug in a serial connection mode, and charge and discharge can be realized through the first plug and the second plug in a parallel connection mode. The battery pack device provided by the embodiment of the utility model can enable the first battery pack and the second battery pack to be in a serial connection state in a charging stage, so that charging current is limited to ensure the safety of charging, and because a cascade use mode of the two battery packs is adopted, the number of times of charging and discharging the single battery pack can be effectively reduced, and the service life of the battery pack is prolonged; in addition, the battery pack device provided by the embodiment of the utility model adopts a double-battery pack structure, so that the battery pack device is provided with a detachable foundation, and the maintenance cost can be reduced to a certain extent.
According to some embodiments of the utility model, the battery pack apparatus further comprises a fourth disconnection control module connected to the battery management system, the fourth disconnection control module being configured to switch on and off the first connection terminal of the positive electrode of the first battery pack and the first plug, and the second connection terminal of the negative electrode of the second battery pack and the first plug.
According to some embodiments of the utility model, the battery pack apparatus further comprises:
the first pre-charging switch assembly is connected with the second on-off control module in parallel and is used for switching on and off a first connecting end of the positive electrode of the first battery pack and the second plug, a second connecting end of the negative electrode of the first battery pack and the second plug and reducing the output current of the first battery pack;
and the second pre-charging switch assembly is connected with the third switching control module in parallel and is used for switching on and switching off the positive electrode of the second battery pack and the first connecting end of the second plug, the negative electrode of the second battery pack and the second connecting end of the second plug, and reducing the output current of the second battery pack.
According to some embodiments of the utility model, the first pre-charge switch assembly includes:
a first precharge on-off control module, one end of which is connected with a first precharge group between the positive electrode of the first battery pack, and the other end of which is connected with a first connection end of the second plug;
and one end of the second pre-charge on-off control module is connected with the negative electrode of the first battery pack, and the other end of the second pre-charge on-off control module is connected with the second connecting end of the second plug.
According to some embodiments of the utility model, the second pre-charge switch assembly includes:
a second precharge group is connected between one end of the third precharge on-off control module and the positive electrode of the second battery pack, and the other end of the third precharge on-off control module is connected with the first connecting end of the second plug;
and one end of the fourth pre-charge on-off control module is connected with the negative electrode of the second battery pack, and the other end of the fourth pre-charge on-off control module is connected with the second connecting end of the second plug.
According to some embodiments of the utility model, the second and third on-off control modules employ double pole double throw relays.
According to some embodiments of the utility model, the battery pack apparatus further comprises a first current detection unit and a second current detection unit both connected to the battery management system, the first current detection unit being configured to detect an output current of the first battery pack, and the second current detection unit being configured to detect an output current of the second battery pack.
According to some embodiments of the utility model, the first current detection unit and the second current detection unit each comprise a hall sensor and/or a shunt.
According to some embodiments of the utility model, the battery pack apparatus further comprises:
a first fuse connected in series with the first battery pack;
and the second fuse is connected in series with the second battery pack.
A battery system according to an embodiment of the second aspect of the present utility model includes the battery pack apparatus according to the embodiment of the first aspect. The battery system according to the embodiment of the utility model comprises the battery pack device according to the embodiment of the first aspect, and therefore has all the advantages of the battery pack device according to the embodiment of the first aspect.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a circuit diagram of a battery pack apparatus according to an embodiment of the present utility model;
fig. 2 is an equivalent circuit diagram of a battery pack device in a serial manner according to an embodiment of the present utility model;
fig. 3 is an equivalent circuit diagram of a parallel connection mode of a battery pack device according to an embodiment of the present utility model.
Reference numerals:
battery management system 100,
A first priming switch assembly 210, a second priming switch assembly 220,
A first current detection unit 310, a second current detection unit 320.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, the description of first, second, etc. is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be determined reasonably by a person skilled in the art in combination with the specific content of the technical solution.
The following description of the embodiments of the present utility model will be made with reference to the accompanying drawings, in which it is apparent that the embodiments described below are some, but not all embodiments of the utility model.
Referring to fig. 1, fig. 1 is a circuit diagram of a battery pack apparatus according to an embodiment of the present utility model, the battery pack apparatus including: the device comprises a first battery pack, a second battery pack, a first plug, a second plug, a first on-off control module, a second on-off control module and a third on-off control module;
a first battery pack;
a second battery pack;
the first plug is connected with the positive electrode of the first battery pack at a first connecting end and connected with the negative electrode of the second battery pack at a second connecting end;
a second plug;
the first on-off control module is connected between the negative electrode of the first battery pack and the positive electrode of the second battery pack;
the second switching control module is used for switching on and switching off a first connecting end of the positive electrode of the first battery pack and the second plug, and a second connecting end of the negative electrode of the first battery pack and the second plug;
the third switching-off control module is used for switching on and switching off the first connecting end of the positive electrode of the second battery pack and the second plug, and the second connecting end of the negative electrode of the second battery pack and the second plug; the first on-off control module, the second on-off control module and the third on-off control module are all connected with the battery management system 100.
Referring to fig. 1 to 3, a battery pack apparatus of an embodiment of the present utility model is provided with two battery packs; when the second on-off control module and the third on-off control module are disconnected and the first on-off control module is closed, the first battery pack and the second battery pack can be connected in series, at the moment, the first plug is used as input and output of the serial structure, and the second plug is in an off state; when the second on-off control module and the third on-off control module are closed and the first on-off control module is opened, the first battery pack and the second battery pack can be connected in parallel, and at the moment, the first plug and the second plug are in a parallel state and can be used as input and output at the same time. It should be noted that, the first battery pack and the second battery pack may be connected in series and in parallel, and the power supply voltages of the batteries are different between the series connection and the parallel connection. In addition, it should be noted that, the battery management system 100 is a control system of the existing electric vehicle, and the battery pack device according to the embodiment of the utility model directly uses the battery management system 100 to complete the control, so that the increase of the additional cost can be effectively reduced.
The battery pack device provided by the embodiment of the utility model can realize the serial-parallel connection switching of the first battery pack and the second battery pack by utilizing the first on-off control module, the second on-off control module and the third on-off control module, can charge and discharge through the first plug in a serial connection mode, and can realize the charge and discharge through the first plug and the second plug in a parallel connection mode. The battery pack device provided by the embodiment of the utility model can enable the first battery pack and the second battery pack to be in a serial connection state in a charging stage, so that charging current is limited to ensure the safety of charging, and because a cascade use mode of the two battery packs is adopted, the number of times of charging and discharging the single battery pack can be effectively reduced, and the service life of the battery pack is prolonged; in addition, the battery pack device provided by the embodiment of the utility model adopts a double-battery pack structure, so that the battery pack device is provided with a detachable foundation, and the maintenance cost can be reduced to a certain extent.
In some embodiments, the battery pack apparatus further includes a fourth on-off control module connected to the battery management system 100 for switching on and off the first connection terminal of the positive electrode of the first battery pack and the first plug, and the second connection terminal of the negative electrode of the second battery pack and the first plug. As shown in fig. 1, the fourth disconnection control module may be used to disconnect and connect the first plug to the battery pack, so that the fourth disconnection control module may be used as a safety device, for example, when the first plug is used as a charging plug, the connection between the battery pack and the charging pile may be actively disconnected when an excessive charging current is encountered, so as to reduce the safety risk. It can be understood that a fifth on-off control module can be arranged between the second plug and the battery pack, and the purpose of active cutting-off can be realized.
In some embodiments, the battery pack apparatus further includes a first pre-charge switch assembly 210 and a second pre-charge switch assembly 220, both connected to the battery management system 100; the first pre-charge switch assembly 210 is used for switching on and switching off a first connection end of the positive electrode of the first battery pack and the second plug, a second connection end of the negative electrode of the first battery pack and the second plug, and reducing the output current of the first battery pack; the second pre-charge switch assembly 220 is used for switching on and off the first connection end of the positive electrode of the second battery pack and the second plug, the second connection end of the negative electrode of the second battery pack and the second plug, and reducing the output current of the second battery pack. Referring to fig. 1, in practical applications, considering the capability of the load side to withstand current impact, the first and second pre-charge switch assemblies 210 and 220 may be provided so that the liability side may be pre-charged before the second and third on-off control modules are turned on, to avoid current impact caused by direct entry into the formal power supply. It should be noted that, the pre-charging assembly is provided, so that the requirement of the liability side on the voltage endurance capability of the electronic device can be effectively reduced, and the cost can be reduced to a certain extent.
In some embodiments, the first pre-charge switch assembly 210 includes a first pre-charge on-off control module and a second pre-charge on-off control module, both controlled by the battery management system 100; a first precharge group is connected between one end of the first precharge on-off control module and the positive electrode of the first battery pack, and the other end of the first precharge group is connected with the first connecting end of the second plug; one end of the second pre-charge on-off control module is connected with the negative electrode of the first battery pack, and the other end of the second pre-charge on-off control module is connected with the second connecting end of the second plug. Referring to fig. 1, the first pre-charge on-off control module and the second pre-charge on-off control module may respectively implement switching between the on-off state and the on-state between the anode and the cathode of the first battery pack and the second plug, so that the first pre-charge switch assembly 210 formed by the first pre-charge on-off control module, the second pre-charge on-off control module and the first pre-charge group may be utilized to perform pre-charge before the second on-off control module is closed, and after the pre-charge is completed, the battery pack is formally turned on through the second on-off control module.
In some embodiments, the second pre-charge switch assembly 220 includes a third pre-charge on-off control module and a fourth pre-charge on-off control module, both controlled by the battery management system 100; a second precharge group is connected between one end of the third precharge on-off control module and the positive electrode of the second battery pack, and the other end of the third precharge on-off control module is connected with the first connecting end of the second plug; one end of the fourth pre-charge on-off control module is connected with the negative electrode of the second battery pack, and the other end of the fourth pre-charge on-off control module is connected with the second connecting end of the second plug. Referring to fig. 1, the third pre-charge on-off control module and the fourth pre-charge on-off control module may respectively implement switching between the off and on states of the second battery pack anode and cathode and the second plug, and may further perform pre-charging by using the second pre-charge switch assembly 220 formed by the third pre-charge on-off control module, the fourth pre-charge on-off control module and the second pre-charge group before closing the third on-off control module, and after the pre-charging is completed, formally switch on the battery pack through the fourth on-off control module.
As shown in fig. 1, in some embodiments, the fourth, second, and third on-off control modules employ double pole, double throw relays. The adoption of the double-pole double-throw relay can better realize synchronous control of the positive electrode and the negative electrode of the battery pack when the battery pack is connected, and can simplify control logic. It should be noted that the fourth on-off control module, the second on-off control module, and the third on-off control module may be implemented by combining two common relays.
As shown in fig. 1, in some embodiments, the battery pack apparatus further includes a first current detecting unit 310 and a second current detecting unit 320, both connected to the battery management system 100, the first current detecting unit 310 is configured to detect an output current of the first battery pack, and the second current detecting unit 320 is configured to detect an output current of the second battery pack. The first current detecting unit 310 and the second current detecting unit 320 can detect the first battery pack current and the second battery pack current, and after the battery management system 100 obtains the currents detected by the first current detecting unit 310 and the second current detecting unit 320, the currents can be used for monitoring the operation states of the first battery pack and the second battery pack.
In some embodiments, the first current detection unit 310 and the second current detection unit 320 each include a hall sensor and/or a shunt. The Hall sensor and the current divider can be used for current detection, and only one of the Hall sensor and the current divider can be selected for use in actual use. As shown in fig. 1, the first battery pack and the second battery pack are connected in series with the hall sensor and the shunt, so as to better realize detection of the output current.
Referring to fig. 1, in some embodiments, the battery pack apparatus further includes a first fuse, a second fuse; the first fuse is connected with the first battery pack in series; the second fuse is connected in series with the second battery pack. The fuse can play the purpose of hardware protection, and when software protection is not started, if overcurrent and other conditions occur, the fuse can be fused to play the final protection, so that the dangerous case is prevented from being further expanded.
In some embodiments, the first on-off control module, the first pre-charge on-off control module, the second pre-charge on-off control module, the third pre-charge on-off control module, the fourth pre-charge on-off control module, the second on-off control module, the third on-off control module, and the fourth on-off control module may all employ switching devices. Specifically, the first on-off control module, the first pre-charging on-off control module, the second pre-charging on-off control module, the third pre-charging on-off control module and the fourth pre-charging on-off control module can adopt relays, and the second on-off control module, the third on-off control module and the fourth on-off control module can adopt double-pole double-throw relays.
For a better description of the exemplary battery pack apparatus of the present utility model, it is further described herein by way of specific examples. In this embodiment, the first on-off control module K8, the first pre-charge on-off control module K1, the second pre-charge on-off control module K3, the third pre-charge on-off control module K4, and the fourth pre-charge on-off control module K6 all use relays, and the second on-off control module K2, the third on-off control module K5, and the fourth on-off control module K7 all use double-pole double-throw relays;
the circuit configuration of the present embodiment is specifically described herein with reference to fig. 1.
A Hall sensor C1, a first pre-charging resistor RF1 and a first pre-charging on-off control module K1 are sequentially connected in series between the positive electrode of the first battery pack B1 and the first connecting end of the second plug G2; a first fuse F1, a shunt E1 and a second pre-charge on-off control module K3 are sequentially connected in series between the negative electrode of the first battery pack B1 and the second connecting end of the second plug G2; the first group of connecting terminals of the second on-off control module K2 are connected in parallel with a serial structure formed by the first pre-charge resistor RF1 and the first pre-charge on-off control module K1, and the second group of connecting terminals of the second on-off control module K2 are connected in parallel with the second pre-charge on-off control module K3;
a Hall sensor C2, a second pre-charging resistor RF2 and a third pre-charging on-off control module K4 are sequentially connected in series between the positive electrode of the second battery pack B2 and the first connecting end of the second plug G2; a second fuse F2, a shunt E2 and a fourth pre-charge on-off control module K6 are sequentially connected in series between the negative electrode of the second battery pack B2 and the second connecting end of the second plug G2; the first group of connecting terminals of the third on-off control module K5 are connected in parallel with a serial structure formed by the second pre-charge resistor RF2 and the third pre-charge on-off control module K4, and the second group of connecting terminals of the third on-off control module K2 are connected in parallel with the fourth pre-charge on-off control module K6;
a first group of connection terminals of a fourth on-off control module K7 are connected in series between a common connection point of the Hall sensor C1 and the first pre-charge resistor RF1 and a first connection end of the first plug G1, and a second group of connection terminals of the fourth on-off control module K7 are connected in series between a common connection point of the shunt E2 and the fourth pre-charge on-off control module K6 and a second connection end of the first plug;
the first on-off control module K8, the first pre-charge on-off control module K1, the second pre-charge on-off control module K3, the third pre-charge on-off control module K4, the fourth pre-charge on-off control module K6, the second on-off control module K2, the third on-off control module K5 and the fourth on-off control module K7 are controlled by the battery management unit BMS.
The following describes a specific operation based on the above-described circuit configuration. In this embodiment, only a specific switching operation in which charging is performed in a serial manner and power is supplied in a parallel mode will be described.
When the charging is needed in a serial connection mode, the fourth on-off control module K7 is controlled to be closed, then the second on-off control module K2 is opened, the first on-off control module K8 is closed, and finally the third on-off control module K5 is opened, so that the serial connection setting can be completed, in the process, the first on-off control module K1, the second on-off control module K3, the third on-off control module K4 and the fourth on-off control module K6 do not need to be put into use, and the two battery packs are connected in series and can effectively reduce the charging current in a normally open state; an equivalent circuit diagram in series mode can be seen with reference to fig. 2;
when the device needs to be put into operation in a parallel mode, the fourth on-off control module K7 is controlled to be closed, then the first pre-charge on-off control module K1 and the second pre-charge on-off control module K3 are controlled to be closed for pre-charge, the second on-off control module K2 is closed after the pre-charge is completed, the first pre-charge on-off control module K1 and the second pre-charge on-off control module K3 are opened, then the first on-off control module K8 is opened, the third pre-charge on-off control module K4 and the fourth pre-charge on-off control module K6 are controlled to be closed, the pre-charge is completed, the third on-off control module K5 is closed, and the third pre-charge on-off control module K4 and the fourth pre-charge on-off control module K6 are opened, so that the switch from series connection to parallel connection is completed; an equivalent circuit diagram in parallel mode can be seen with reference to fig. 3.
It will be appreciated that this mode of operation is not the only mode of operation, and that other modes of operation may be selected by those skilled in the art based on actual needs.
The embodiment of the utility model also provides a battery system, which comprises the battery pack device of the embodiment. The battery system in the embodiment of the utility model comprises the battery pack device, so that the battery pack device has all the beneficial effects.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. A battery pack apparatus, comprising:
a first battery pack;
a second battery pack;
the first plug is connected with the positive electrode of the first battery pack at a first connecting end and connected with the negative electrode of the second battery pack at a second connecting end;
a second plug;
the first on-off control module is connected between the negative electrode of the first battery pack and the positive electrode of the second battery pack;
the second switching control module is used for switching on and switching off a first connecting end of the positive electrode of the first battery pack and the second plug, and a second connecting end of the negative electrode of the first battery pack and the second plug;
the third disconnection control module is used for switching on and switching off the first connection end of the positive electrode of the second battery pack and the second plug, and the second connection end of the negative electrode of the second battery pack and the second plug;
the first on-off control module, the second on-off control module and the third on-off control module are all connected with the battery management system.
2. The battery pack apparatus of claim 1 further comprising a fourth on-off control module coupled to the battery management system for switching on and off the first connection of the positive pole of the first battery pack to the first plug and the second connection of the negative pole of the second battery pack to the first plug.
3. The battery pack apparatus according to claim 1 or 2, further comprising, connected to the battery management system:
the first pre-charging switch assembly is connected with the second on-off control module in parallel and is used for switching on and off a first connecting end of the positive electrode of the first battery pack and the second plug, a second connecting end of the negative electrode of the first battery pack and the second plug and reducing the output current of the first battery pack;
and the second pre-charging switch assembly is connected with the third switching control module in parallel and is used for switching on and switching off the positive electrode of the second battery pack and the first connecting end of the second plug, the negative electrode of the second battery pack and the second connecting end of the second plug, and reducing the output current of the second battery pack.
4. The battery pack apparatus of claim 3 wherein the first pre-charge switch assembly comprises both controlled by the battery management system:
a first precharge on-off control module, one end of which is connected with a first precharge group between the positive electrode of the first battery pack, and the other end of which is connected with a first connection end of the second plug;
and one end of the second pre-charge on-off control module is connected with the negative electrode of the first battery pack, and the other end of the second pre-charge on-off control module is connected with the second connecting end of the second plug.
5. The battery pack apparatus of claim 3 wherein the second pre-charge switch assembly comprises both controlled by the battery management system:
a second precharge group is connected between one end of the third precharge on-off control module and the positive electrode of the second battery pack, and the other end of the third precharge on-off control module is connected with the first connecting end of the second plug;
and one end of the fourth pre-charge on-off control module is connected with the negative electrode of the second battery pack, and the other end of the fourth pre-charge on-off control module is connected with the second connecting end of the second plug.
6. The battery pack apparatus of claim 1, wherein the second and third on-off control modules employ double pole double throw relays.
7. The battery pack apparatus according to claim 1, further comprising a first current detection unit for detecting an output current of the first battery pack and a second current detection unit for detecting an output current of the second battery pack, both connected to the battery management system.
8. The battery pack apparatus of claim 7, wherein the first current detection unit and the second current detection unit each comprise a hall sensor and/or a shunt.
9. The battery pack apparatus of claim 1, wherein the battery pack apparatus further comprises:
a first fuse connected in series with the first battery pack;
and the second fuse is connected in series with the second battery pack.
10. A battery system comprising a battery management system and a battery pack apparatus as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322389383.3U CN220742729U (en) | 2023-09-01 | 2023-09-01 | Battery pack device and battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322389383.3U CN220742729U (en) | 2023-09-01 | 2023-09-01 | Battery pack device and battery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220742729U true CN220742729U (en) | 2024-04-09 |
Family
ID=90555407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322389383.3U Active CN220742729U (en) | 2023-09-01 | 2023-09-01 | Battery pack device and battery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220742729U (en) |
-
2023
- 2023-09-01 CN CN202322389383.3U patent/CN220742729U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020244465A1 (en) | Battery system of vehicle, charging and discharging method, and vehicle | |
| US9643506B2 (en) | Portable backup charger | |
| KR20140110694A (en) | Battery management system and switching method thereof | |
| CN205753523U (en) | A kind of energy-storage battery group charge and discharge control and detection device | |
| CN216389527U (en) | Battery heating system, battery pack and electric device | |
| CN209805465U (en) | Storage battery pack topological structure capable of prolonging service life of storage battery | |
| CN220742729U (en) | Battery pack device and battery system | |
| WO2023142086A1 (en) | Battery management apparatus and system | |
| CN214929134U (en) | Power battery charging and discharging system of electric vehicle and electric vehicle | |
| CN113978251A (en) | Power protection system and method for doubly limiting overall action of forklift | |
| CN111546892A (en) | Control sequence method for relay in failure of new energy automobile power battery system | |
| CN113078720A (en) | Charging and discharging circuit and method | |
| CN109484246B (en) | Battery connecting structure of electric automobile | |
| CN113580941A (en) | System and method for automatically connecting and disconnecting power battery | |
| CN219980472U (en) | Battery circuit and car | |
| CN109787327A (en) | A kind of lithium ionic cell module management circuit | |
| CN210744784U (en) | Overvoltage protection circuit for charging storage battery | |
| CN221328665U (en) | High-voltage distribution box for energy storage system | |
| CN217294265U (en) | Power protection system for dual-limitation of whole forklift actions | |
| CN219875163U (en) | Battery circuit and car | |
| CN219351311U (en) | Lithium ion battery protection board structure | |
| CN212435391U (en) | Battery double-layer protection circuit and battery device | |
| CN213199521U (en) | Battery module and charging system of electric vehicle and electric vehicle | |
| CN220585979U (en) | Management system, power supply device, and vehicle | |
| CN219989042U (en) | Battery circuit and car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |